Add libmad source to internal source tree

Modified to fit into Quake 3 build system and use q_platform.h instead of
configure.

Makefile

@@ -176,7 +176,7 @@ ifndef USE_CURL_DLOPEN
 endif
 
 ifndef USE_CODEC_MP3
-USE_CODEC_MP3=0
+USE_CODEC_MP3=1
 endif
 
 ifndef USE_CODEC_VORBIS
@@ -203,6 +203,10 @@ ifndef USE_INTERNAL_LIBS
 USE_INTERNAL_LIBS=1
 endif
 
+ifndef USE_INTERNAL_MP3
+USE_INTERNAL_MP3=$(USE_INTERNAL_LIBS)
+endif
+
 ifndef USE_INTERNAL_OGG
 USE_INTERNAL_OGG=$(USE_INTERNAL_LIBS)
 endif
@@ -267,6 +271,7 @@ OGGDIR=$(MOUNT_DIR)/libogg-1.3.2
 VORBISDIR=$(MOUNT_DIR)/libvorbis-1.3.5
 OPUSDIR=$(MOUNT_DIR)/opus-1.1.4
 OPUSFILEDIR=$(MOUNT_DIR)/opusfile-0.8
+MADDIR=$(MOUNT_DIR)/libmad-0.15.1b
 ZDIR=$(MOUNT_DIR)/zlib
 Q3ASMDIR=$(MOUNT_DIR)/tools/asm
 LBURGDIR=$(MOUNT_DIR)/tools/lcc/lburg
@@ -1039,8 +1044,37 @@ endif
 ifeq ($(USE_CODEC_MP3),1)
   CLIENT_CFLAGS += -DUSE_CODEC_MP3
 
-  MAD_CFLAGS ?= $(shell pkg-config --silence-errors --cflags mad || true)
-  MAD_LIBS ?= $(shell pkg-config --silence-errors --libs mad || echo -lmad)
+  ifeq ($(USE_INTERNAL_MP3),1)
+    MAD_CFLAGS = -DUSE_INTERNAL_MP3 -I$(MADDIR)/include
+    ifeq ($(ARCH),x86)
+      MAD_CFLAGS += -DFPM_INTEL
+    else
+    ifeq ($(ARCH),x86_64)
+      MAD_CFLAGS += -DFPM_64BIT
+    else
+    ifeq ($(ARCH),ppc)
+      MAD_CFLAGS += -DFPM_PPC
+    else
+    ifeq ($(ARCH),arm)
+      MAD_CFLAGS += -DFPM_ARM
+    else
+    ifeq ($(ARCH),mips)
+      MAD_CFLAGS += -DFPM_MIPS
+    else
+    ifeq ($(ARCH),sparc)
+      MAD_CFLAGS += -DFPM_SPARC
+    else
+      MAD_CFLAGS += -DFPM_DEFAULT
+    endif
+    endif
+    endif
+    endif
+    endif
+    endif
+  else
+    MAD_CFLAGS ?= $(shell pkg-config --silence-errors --cflags mad || true)
+    MAD_LIBS ?= $(shell pkg-config --silence-errors --libs mad || echo -lmad)
+  endif
 
   CLIENT_CFLAGS += $(MAD_CFLAGS)
   CLIENT_LIBS += $(MAD_LIBS)
@@ -1399,6 +1433,7 @@ endif
 
 makedirs:
 	@$(MKDIR) $(B)/autoupdater
+	@$(MKDIR) $(B)/client/libmad
 	@$(MKDIR) $(B)/client/opus
 	@$(MKDIR) $(B)/client/vorbis
 	@$(MKDIR) $(B)/renderergl1
@@ -1932,6 +1967,23 @@ ifeq ($(ARCH),x86_64)
     $(B)/client/ftola.o
 endif
 
+ifeq ($(USE_CODEC_MP3),1)
+ifeq ($(USE_INTERNAL_MP3),1)
+Q3OBJ += \
+  $(B)/client/libmad/bit.o \
+  $(B)/client/libmad/decoder.o \
+  $(B)/client/libmad/fixed.o \
+  $(B)/client/libmad/frame.o \
+  $(B)/client/libmad/huffman.o \
+  $(B)/client/libmad/layer3.o \
+  $(B)/client/libmad/layer12.o \
+  $(B)/client/libmad/stream.o \
+  $(B)/client/libmad/synth.o \
+  $(B)/client/libmad/timer.o \
+  $(B)/client/libmad/version.o
+endif
+endif
+
 ifeq ($(NEED_OPUS),1)
 ifeq ($(USE_INTERNAL_OPUS),1)
 Q3OBJ += \
@@ -2649,6 +2701,9 @@ $(B)/client/%.o: $(BLIBDIR)/%.c
 $(B)/client/%.o: $(OGGDIR)/src/%.c
 	$(DO_CC)
 
+$(B)/client/libmad/%.o: $(MADDIR)/%.c
+	$(DO_CC)
+
 $(B)/client/vorbis/%.o: $(VORBISDIR)/lib/%.c
 	$(DO_CC)
 

code/client/snd_codec_mp3.c

@@ -31,7 +31,11 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #include "snd_codec.h"
 
 // includes for the MP3 codec
+#ifdef USE_INTERNAL_MP3
+#include "mad.h"
+#else
 #include <mad.h>
+#endif
 
 #define MP3_SAMPLE_WIDTH		2
 #define MP3_PCMSAMPLES_PERSLICE		32

code/libmad-0.15.1b/COPYRIGHT

@@ -0,0 +1,21 @@
+
+ libmad - MPEG audio decoder library
+ Copyright (C) 2000-2004 Underbit Technologies, Inc.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+ If you would like to negotiate alternate licensing terms, you may do
+ so by contacting: Underbit Technologies, Inc. <info@underbit.com>
+

code/libmad-0.15.1b/CREDITS

@@ -0,0 +1,116 @@
+
+ libmad - MPEG audio decoder library
+ Copyright (C) 2000-2004 Underbit Technologies, Inc.
+
+ $Id: CREDITS,v 1.5 2004/02/17 02:02:03 rob Exp $
+
+===============================================================================
+
+AUTHOR
+
+  Except where otherwise noted, all code was authored by:
+
+      Robert Leslie <rob@underbit.com>
+
+CONTRIBUTORS
+
+  Significant contributions have been incorporated with thanks to:
+
+      Anonymous
+        2002/03/15: frame.c
+          - Reported problem with use of reserved emphasis value.
+        2003/08/31: layer12.c
+          - Suggested support for certain disallowed bitrate/mode
+            combinations.
+
+      Niek Albers <info@daansystems.com>
+        2003/04/21: layer3.c
+          - Reported runtime uninitialized use of `ptr' in designating
+            ancillary bits after a decoding error.
+
+      Christian Biere <cbiere@users.sourceforge.net>
+        2003/02/01: frame.c
+          - Reported assertion failure in layer3.c due to an
+            invalid/unsupported Layer III free format bitrate.
+
+      David Blythe <blythe@routefree.com>
+        2001/01/30: fixed.h
+          - Provided initial PowerPC fixed-point assembly.
+
+      Simon Burge <simonb@wasabisystems.com>
+        2000/09/20: imdct_l_arm.S
+          - Suggested patch for a.out compatibility.
+
+      Brian Cameron <Brian.Cameron@sun.com>
+        2003/07/02: huffman.c
+          - Suggested changes for improved portability.
+
+      Joshua Haberman <joshua@haberman.com>
+        2001/08/10: decoder.c, huffman.c
+          - Suggested portability fixes.
+
+      Timothy King <lordzork@lordzork.com>
+        2002/05/04: sf_table.dat, layer12.c
+          - Reported problem with use of (missing) scalefactor index 63.
+
+      Felix von Leitner <felix-mad@fefe.de>
+        2003/01/21: fixed.h
+          - Suggested Intel scaling alternative for possible speedup.
+
+      Andre McCurdy <armccurdy@yahoo.co.uk>
+        2000/08/10: imdct_l_arm.S
+          - ARM optimized assembly replacement for III_imdct_l().
+        2000/09/15: imdct_l_arm.S
+          - Applied Nicolas Pitre's rounding optimisation in all remaining
+            places.
+        2001/02/10: layer3.c
+          - Inspiration for Huffman decoding and requantization rewrite, and
+            other miscellany.
+        2001/03/24: imdct_l_arm.S
+          - Corrected PIC unsafe code.
+        2002/02/16: fixed.h
+          - Discovered bug in ARM version of mad_f_scale64().
+
+      Haruhiko OGASAWARA <theta@m1.interq.or.jp>
+        2001/01/28: layer3.c
+          - Reported discrepancy in alias reduction for mixed short blocks.
+
+      Brett Paterson <brett@fmod.org>
+        2001/10/28: global.h
+          - Reported missing <assert.h> et al. under MS Embedded Visual C.
+
+      Sean 'Shaleh' Perry <shaleh@via.net>
+        2000/04/04: fixed.h
+          - Suggested use of size-dependent typedefs.
+        2001/10/22: config.guess, config.sub
+          - Keep up to date for proper Debian packaging.
+
+      Bertrand Petit <eemad@phoe.frmug.org>
+        2001/11/05: synth.h
+          - Suggested PCM channel enumeration constants.
+        2001/11/05: stream.h
+          - Suggested MAD_ERROR_NONE enumeration constant.
+        2001/11/05: stream.c
+          - Suggested mad_stream_errorstr() function.
+
+      Nicolas Pitre <nico@cam.org>
+        2000/09/09: fixed.h
+          - Parameterized all scaling for correct use of all multiplication
+            methods within mad_synth_frame().
+          - Rewrote the FPM_ARM version of mad_f_mul() so we have 64-bit
+            multiplication result, rounding and scaling with 3 instructions.
+        2000/09/09: imdct_l_arm.S
+          - Optimized rounding + scaling operations.
+        2000/09/17: synth.c
+          - Changed D[] run-time shifts to compile-time.
+          - Modified synthesis for better multiply/accumulate code output.
+        2001/08/11: fixed.h, synth.c
+          - Suggested 64-bit FPM negation and negative term factorization
+            during synthesis.
+        2001/08/11: fixed.h
+          - Suggested unrounded behavior for FPM_DEFAULT when OPT_SPEED.
+        2001/11/19: fixed.c
+          - Suggested computation of any resampling ratio.
+
+===============================================================================
+

code/libmad-0.15.1b/D.dat

@@ -0,0 +1,607 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: D.dat,v 1.9 2004/01/23 09:41:32 rob Exp $
+ */
+
+/*
+ * These are the coefficients for the subband synthesis window. This is a
+ * reordered version of Table B.3 from ISO/IEC 11172-3.
+ *
+ * Every value is parameterized so that shift optimizations can be made at
+ * compile-time. For example, every value can be right-shifted 12 bits to
+ * minimize multiply instruction times without any loss of accuracy.
+ */
+
+  {  PRESHIFT(0x00000000) /*  0.000000000 */,	/*  0 */
+    -PRESHIFT(0x0001d000) /* -0.000442505 */,
+     PRESHIFT(0x000d5000) /*  0.003250122 */,
+    -PRESHIFT(0x001cb000) /* -0.007003784 */,
+     PRESHIFT(0x007f5000) /*  0.031082153 */,
+    -PRESHIFT(0x01421000) /* -0.078628540 */,
+     PRESHIFT(0x019ae000) /*  0.100311279 */,
+    -PRESHIFT(0x09271000) /* -0.572036743 */,
+     PRESHIFT(0x1251e000) /*  1.144989014 */,
+     PRESHIFT(0x09271000) /*  0.572036743 */,
+     PRESHIFT(0x019ae000) /*  0.100311279 */,
+     PRESHIFT(0x01421000) /*  0.078628540 */,
+     PRESHIFT(0x007f5000) /*  0.031082153 */,
+     PRESHIFT(0x001cb000) /*  0.007003784 */,
+     PRESHIFT(0x000d5000) /*  0.003250122 */,
+     PRESHIFT(0x0001d000) /*  0.000442505 */,
+
+     PRESHIFT(0x00000000) /*  0.000000000 */,
+    -PRESHIFT(0x0001d000) /* -0.000442505 */,
+     PRESHIFT(0x000d5000) /*  0.003250122 */,
+    -PRESHIFT(0x001cb000) /* -0.007003784 */,
+     PRESHIFT(0x007f5000) /*  0.031082153 */,
+    -PRESHIFT(0x01421000) /* -0.078628540 */,
+     PRESHIFT(0x019ae000) /*  0.100311279 */,
+    -PRESHIFT(0x09271000) /* -0.572036743 */,
+     PRESHIFT(0x1251e000) /*  1.144989014 */,
+     PRESHIFT(0x09271000) /*  0.572036743 */,
+     PRESHIFT(0x019ae000) /*  0.100311279 */,
+     PRESHIFT(0x01421000) /*  0.078628540 */,
+     PRESHIFT(0x007f5000) /*  0.031082153 */,
+     PRESHIFT(0x001cb000) /*  0.007003784 */,
+     PRESHIFT(0x000d5000) /*  0.003250122 */,
+     PRESHIFT(0x0001d000) /*  0.000442505 */ },
+
+  { -PRESHIFT(0x00001000) /* -0.000015259 */,	/*  1 */
+    -PRESHIFT(0x0001f000) /* -0.000473022 */,
+     PRESHIFT(0x000da000) /*  0.003326416 */,
+    -PRESHIFT(0x00207000) /* -0.007919312 */,
+     PRESHIFT(0x007d0000) /*  0.030517578 */,
+    -PRESHIFT(0x0158d000) /* -0.084182739 */,
+     PRESHIFT(0x01747000) /*  0.090927124 */,
+    -PRESHIFT(0x099a8000) /* -0.600219727 */,
+     PRESHIFT(0x124f0000) /*  1.144287109 */,
+     PRESHIFT(0x08b38000) /*  0.543823242 */,
+     PRESHIFT(0x01bde000) /*  0.108856201 */,
+     PRESHIFT(0x012b4000) /*  0.073059082 */,
+     PRESHIFT(0x0080f000) /*  0.031478882 */,
+     PRESHIFT(0x00191000) /*  0.006118774 */,
+     PRESHIFT(0x000d0000) /*  0.003173828 */,
+     PRESHIFT(0x0001a000) /*  0.000396729 */,
+
+    -PRESHIFT(0x00001000) /* -0.000015259 */,
+    -PRESHIFT(0x0001f000) /* -0.000473022 */,
+     PRESHIFT(0x000da000) /*  0.003326416 */,
+    -PRESHIFT(0x00207000) /* -0.007919312 */,
+     PRESHIFT(0x007d0000) /*  0.030517578 */,
+    -PRESHIFT(0x0158d000) /* -0.084182739 */,
+     PRESHIFT(0x01747000) /*  0.090927124 */,
+    -PRESHIFT(0x099a8000) /* -0.600219727 */,
+     PRESHIFT(0x124f0000) /*  1.144287109 */,
+     PRESHIFT(0x08b38000) /*  0.543823242 */,
+     PRESHIFT(0x01bde000) /*  0.108856201 */,
+     PRESHIFT(0x012b4000) /*  0.073059082 */,
+     PRESHIFT(0x0080f000) /*  0.031478882 */,
+     PRESHIFT(0x00191000) /*  0.006118774 */,
+     PRESHIFT(0x000d0000) /*  0.003173828 */,
+     PRESHIFT(0x0001a000) /*  0.000396729 */ },
+
+  { -PRESHIFT(0x00001000) /* -0.000015259 */,	/*  2 */
+    -PRESHIFT(0x00023000) /* -0.000534058 */,
+     PRESHIFT(0x000de000) /*  0.003387451 */,
+    -PRESHIFT(0x00245000) /* -0.008865356 */,
+     PRESHIFT(0x007a0000) /*  0.029785156 */,
+    -PRESHIFT(0x016f7000) /* -0.089706421 */,
+     PRESHIFT(0x014a8000) /*  0.080688477 */,
+    -PRESHIFT(0x0a0d8000) /* -0.628295898 */,
+     PRESHIFT(0x12468000) /*  1.142211914 */,
+     PRESHIFT(0x083ff000) /*  0.515609741 */,
+     PRESHIFT(0x01dd8000) /*  0.116577148 */,
+     PRESHIFT(0x01149000) /*  0.067520142 */,
+     PRESHIFT(0x00820000) /*  0.031738281 */,
+     PRESHIFT(0x0015b000) /*  0.005294800 */,
+     PRESHIFT(0x000ca000) /*  0.003082275 */,
+     PRESHIFT(0x00018000) /*  0.000366211 */,
+
+    -PRESHIFT(0x00001000) /* -0.000015259 */,
+    -PRESHIFT(0x00023000) /* -0.000534058 */,
+     PRESHIFT(0x000de000) /*  0.003387451 */,
+    -PRESHIFT(0x00245000) /* -0.008865356 */,
+     PRESHIFT(0x007a0000) /*  0.029785156 */,
+    -PRESHIFT(0x016f7000) /* -0.089706421 */,
+     PRESHIFT(0x014a8000) /*  0.080688477 */,
+    -PRESHIFT(0x0a0d8000) /* -0.628295898 */,
+     PRESHIFT(0x12468000) /*  1.142211914 */,
+     PRESHIFT(0x083ff000) /*  0.515609741 */,
+     PRESHIFT(0x01dd8000) /*  0.116577148 */,
+     PRESHIFT(0x01149000) /*  0.067520142 */,
+     PRESHIFT(0x00820000) /*  0.031738281 */,
+     PRESHIFT(0x0015b000) /*  0.005294800 */,
+     PRESHIFT(0x000ca000) /*  0.003082275 */,
+     PRESHIFT(0x00018000) /*  0.000366211 */ },
+
+  { -PRESHIFT(0x00001000) /* -0.000015259 */,	/*  3 */
+    -PRESHIFT(0x00026000) /* -0.000579834 */,
+     PRESHIFT(0x000e1000) /*  0.003433228 */,
+    -PRESHIFT(0x00285000) /* -0.009841919 */,
+     PRESHIFT(0x00765000) /*  0.028884888 */,
+    -PRESHIFT(0x0185d000) /* -0.095169067 */,
+     PRESHIFT(0x011d1000) /*  0.069595337 */,
+    -PRESHIFT(0x0a7fe000) /* -0.656219482 */,
+     PRESHIFT(0x12386000) /*  1.138763428 */,
+     PRESHIFT(0x07ccb000) /*  0.487472534 */,
+     PRESHIFT(0x01f9c000) /*  0.123474121 */,
+     PRESHIFT(0x00fdf000) /*  0.061996460 */,
+     PRESHIFT(0x00827000) /*  0.031845093 */,
+     PRESHIFT(0x00126000) /*  0.004486084 */,
+     PRESHIFT(0x000c4000) /*  0.002990723 */,
+     PRESHIFT(0x00015000) /*  0.000320435 */,
+
+    -PRESHIFT(0x00001000) /* -0.000015259 */,
+    -PRESHIFT(0x00026000) /* -0.000579834 */,
+     PRESHIFT(0x000e1000) /*  0.003433228 */,
+    -PRESHIFT(0x00285000) /* -0.009841919 */,
+     PRESHIFT(0x00765000) /*  0.028884888 */,
+    -PRESHIFT(0x0185d000) /* -0.095169067 */,
+     PRESHIFT(0x011d1000) /*  0.069595337 */,
+    -PRESHIFT(0x0a7fe000) /* -0.656219482 */,
+     PRESHIFT(0x12386000) /*  1.138763428 */,
+     PRESHIFT(0x07ccb000) /*  0.487472534 */,
+     PRESHIFT(0x01f9c000) /*  0.123474121 */,
+     PRESHIFT(0x00fdf000) /*  0.061996460 */,
+     PRESHIFT(0x00827000) /*  0.031845093 */,
+     PRESHIFT(0x00126000) /*  0.004486084 */,
+     PRESHIFT(0x000c4000) /*  0.002990723 */,
+     PRESHIFT(0x00015000) /*  0.000320435 */ },
+
+  { -PRESHIFT(0x00001000) /* -0.000015259 */,	/*  4 */
+    -PRESHIFT(0x00029000) /* -0.000625610 */,
+     PRESHIFT(0x000e3000) /*  0.003463745 */,
+    -PRESHIFT(0x002c7000) /* -0.010848999 */,
+     PRESHIFT(0x0071e000) /*  0.027801514 */,
+    -PRESHIFT(0x019bd000) /* -0.100540161 */,
+     PRESHIFT(0x00ec0000) /*  0.057617187 */,
+    -PRESHIFT(0x0af15000) /* -0.683914185 */,
+     PRESHIFT(0x12249000) /*  1.133926392 */,
+     PRESHIFT(0x075a0000) /*  0.459472656 */,
+     PRESHIFT(0x0212c000) /*  0.129577637 */,
+     PRESHIFT(0x00e79000) /*  0.056533813 */,
+     PRESHIFT(0x00825000) /*  0.031814575 */,
+     PRESHIFT(0x000f4000) /*  0.003723145 */,
+     PRESHIFT(0x000be000) /*  0.002899170 */,
+     PRESHIFT(0x00013000) /*  0.000289917 */,
+
+    -PRESHIFT(0x00001000) /* -0.000015259 */,
+    -PRESHIFT(0x00029000) /* -0.000625610 */,
+     PRESHIFT(0x000e3000) /*  0.003463745 */,
+    -PRESHIFT(0x002c7000) /* -0.010848999 */,
+     PRESHIFT(0x0071e000) /*  0.027801514 */,
+    -PRESHIFT(0x019bd000) /* -0.100540161 */,
+     PRESHIFT(0x00ec0000) /*  0.057617187 */,
+    -PRESHIFT(0x0af15000) /* -0.683914185 */,
+     PRESHIFT(0x12249000) /*  1.133926392 */,
+     PRESHIFT(0x075a0000) /*  0.459472656 */,
+     PRESHIFT(0x0212c000) /*  0.129577637 */,
+     PRESHIFT(0x00e79000) /*  0.056533813 */,
+     PRESHIFT(0x00825000) /*  0.031814575 */,
+     PRESHIFT(0x000f4000) /*  0.003723145 */,
+     PRESHIFT(0x000be000) /*  0.002899170 */,
+     PRESHIFT(0x00013000) /*  0.000289917 */ },
+
+  { -PRESHIFT(0x00001000) /* -0.000015259 */,	/*  5 */
+    -PRESHIFT(0x0002d000) /* -0.000686646 */,
+     PRESHIFT(0x000e4000) /*  0.003479004 */,
+    -PRESHIFT(0x0030b000) /* -0.011886597 */,
+     PRESHIFT(0x006cb000) /*  0.026535034 */,
+    -PRESHIFT(0x01b17000) /* -0.105819702 */,
+     PRESHIFT(0x00b77000) /*  0.044784546 */,
+    -PRESHIFT(0x0b619000) /* -0.711318970 */,
+     PRESHIFT(0x120b4000) /*  1.127746582 */,
+     PRESHIFT(0x06e81000) /*  0.431655884 */,
+     PRESHIFT(0x02288000) /*  0.134887695 */,
+     PRESHIFT(0x00d17000) /*  0.051132202 */,
+     PRESHIFT(0x0081b000) /*  0.031661987 */,
+     PRESHIFT(0x000c5000) /*  0.003005981 */,
+     PRESHIFT(0x000b7000) /*  0.002792358 */,
+     PRESHIFT(0x00011000) /*  0.000259399 */,
+
+    -PRESHIFT(0x00001000) /* -0.000015259 */,
+    -PRESHIFT(0x0002d000) /* -0.000686646 */,
+     PRESHIFT(0x000e4000) /*  0.003479004 */,
+    -PRESHIFT(0x0030b000) /* -0.011886597 */,
+     PRESHIFT(0x006cb000) /*  0.026535034 */,
+    -PRESHIFT(0x01b17000) /* -0.105819702 */,
+     PRESHIFT(0x00b77000) /*  0.044784546 */,
+    -PRESHIFT(0x0b619000) /* -0.711318970 */,
+     PRESHIFT(0x120b4000) /*  1.127746582 */,
+     PRESHIFT(0x06e81000) /*  0.431655884 */,
+     PRESHIFT(0x02288000) /*  0.134887695 */,
+     PRESHIFT(0x00d17000) /*  0.051132202 */,
+     PRESHIFT(0x0081b000) /*  0.031661987 */,
+     PRESHIFT(0x000c5000) /*  0.003005981 */,
+     PRESHIFT(0x000b7000) /*  0.002792358 */,
+     PRESHIFT(0x00011000) /*  0.000259399 */ },
+
+  { -PRESHIFT(0x00001000) /* -0.000015259 */,	/*  6 */
+    -PRESHIFT(0x00031000) /* -0.000747681 */,
+     PRESHIFT(0x000e4000) /*  0.003479004 */,
+    -PRESHIFT(0x00350000) /* -0.012939453 */,
+     PRESHIFT(0x0066c000) /*  0.025085449 */,
+    -PRESHIFT(0x01c67000) /* -0.110946655 */,
+     PRESHIFT(0x007f5000) /*  0.031082153 */,
+    -PRESHIFT(0x0bd06000) /* -0.738372803 */,
+     PRESHIFT(0x11ec7000) /*  1.120223999 */,
+     PRESHIFT(0x06772000) /*  0.404083252 */,
+     PRESHIFT(0x023b3000) /*  0.139450073 */,
+     PRESHIFT(0x00bbc000) /*  0.045837402 */,
+     PRESHIFT(0x00809000) /*  0.031387329 */,
+     PRESHIFT(0x00099000) /*  0.002334595 */,
+     PRESHIFT(0x000b0000) /*  0.002685547 */,
+     PRESHIFT(0x00010000) /*  0.000244141 */,
+
+    -PRESHIFT(0x00001000) /* -0.000015259 */,
+    -PRESHIFT(0x00031000) /* -0.000747681 */,
+     PRESHIFT(0x000e4000) /*  0.003479004 */,
+    -PRESHIFT(0x00350000) /* -0.012939453 */,
+     PRESHIFT(0x0066c000) /*  0.025085449 */,
+    -PRESHIFT(0x01c67000) /* -0.110946655 */,
+     PRESHIFT(0x007f5000) /*  0.031082153 */,
+    -PRESHIFT(0x0bd06000) /* -0.738372803 */,
+     PRESHIFT(0x11ec7000) /*  1.120223999 */,
+     PRESHIFT(0x06772000) /*  0.404083252 */,
+     PRESHIFT(0x023b3000) /*  0.139450073 */,
+     PRESHIFT(0x00bbc000) /*  0.045837402 */,
+     PRESHIFT(0x00809000) /*  0.031387329 */,
+     PRESHIFT(0x00099000) /*  0.002334595 */,
+     PRESHIFT(0x000b0000) /*  0.002685547 */,
+     PRESHIFT(0x00010000) /*  0.000244141 */ },
+
+  { -PRESHIFT(0x00002000) /* -0.000030518 */,	/*  7 */
+    -PRESHIFT(0x00035000) /* -0.000808716 */,
+     PRESHIFT(0x000e3000) /*  0.003463745 */,
+    -PRESHIFT(0x00397000) /* -0.014022827 */,
+     PRESHIFT(0x005ff000) /*  0.023422241 */,
+    -PRESHIFT(0x01dad000) /* -0.115921021 */,
+     PRESHIFT(0x0043a000) /*  0.016510010 */,
+    -PRESHIFT(0x0c3d9000) /* -0.765029907 */,
+     PRESHIFT(0x11c83000) /*  1.111373901 */,
+     PRESHIFT(0x06076000) /*  0.376800537 */,
+     PRESHIFT(0x024ad000) /*  0.143264771 */,
+     PRESHIFT(0x00a67000) /*  0.040634155 */,
+     PRESHIFT(0x007f0000) /*  0.031005859 */,
+     PRESHIFT(0x0006f000) /*  0.001693726 */,
+     PRESHIFT(0x000a9000) /*  0.002578735 */,
+     PRESHIFT(0x0000e000) /*  0.000213623 */,
+
+    -PRESHIFT(0x00002000) /* -0.000030518 */,
+    -PRESHIFT(0x00035000) /* -0.000808716 */,
+     PRESHIFT(0x000e3000) /*  0.003463745 */,
+    -PRESHIFT(0x00397000) /* -0.014022827 */,
+     PRESHIFT(0x005ff000) /*  0.023422241 */,
+    -PRESHIFT(0x01dad000) /* -0.115921021 */,
+     PRESHIFT(0x0043a000) /*  0.016510010 */,
+    -PRESHIFT(0x0c3d9000) /* -0.765029907 */,
+     PRESHIFT(0x11c83000) /*  1.111373901 */,
+     PRESHIFT(0x06076000) /*  0.376800537 */,
+     PRESHIFT(0x024ad000) /*  0.143264771 */,
+     PRESHIFT(0x00a67000) /*  0.040634155 */,
+     PRESHIFT(0x007f0000) /*  0.031005859 */,
+     PRESHIFT(0x0006f000) /*  0.001693726 */,
+     PRESHIFT(0x000a9000) /*  0.002578735 */,
+     PRESHIFT(0x0000e000) /*  0.000213623 */ },
+
+  { -PRESHIFT(0x00002000) /* -0.000030518 */,	/*  8 */
+    -PRESHIFT(0x0003a000) /* -0.000885010 */,
+     PRESHIFT(0x000e0000) /*  0.003417969 */,
+    -PRESHIFT(0x003df000) /* -0.015121460 */,
+     PRESHIFT(0x00586000) /*  0.021575928 */,
+    -PRESHIFT(0x01ee6000) /* -0.120697021 */,
+     PRESHIFT(0x00046000) /*  0.001068115 */,
+    -PRESHIFT(0x0ca8d000) /* -0.791213989 */,
+     PRESHIFT(0x119e9000) /*  1.101211548 */,
+     PRESHIFT(0x05991000) /*  0.349868774 */,
+     PRESHIFT(0x02578000) /*  0.146362305 */,
+     PRESHIFT(0x0091a000) /*  0.035552979 */,
+     PRESHIFT(0x007d1000) /*  0.030532837 */,
+     PRESHIFT(0x00048000) /*  0.001098633 */,
+     PRESHIFT(0x000a1000) /*  0.002456665 */,
+     PRESHIFT(0x0000d000) /*  0.000198364 */,
+
+    -PRESHIFT(0x00002000) /* -0.000030518 */,
+    -PRESHIFT(0x0003a000) /* -0.000885010 */,
+     PRESHIFT(0x000e0000) /*  0.003417969 */,
+    -PRESHIFT(0x003df000) /* -0.015121460 */,
+     PRESHIFT(0x00586000) /*  0.021575928 */,
+    -PRESHIFT(0x01ee6000) /* -0.120697021 */,
+     PRESHIFT(0x00046000) /*  0.001068115 */,
+    -PRESHIFT(0x0ca8d000) /* -0.791213989 */,
+     PRESHIFT(0x119e9000) /*  1.101211548 */,
+     PRESHIFT(0x05991000) /*  0.349868774 */,
+     PRESHIFT(0x02578000) /*  0.146362305 */,
+     PRESHIFT(0x0091a000) /*  0.035552979 */,
+     PRESHIFT(0x007d1000) /*  0.030532837 */,
+     PRESHIFT(0x00048000) /*  0.001098633 */,
+     PRESHIFT(0x000a1000) /*  0.002456665 */,
+     PRESHIFT(0x0000d000) /*  0.000198364 */ },
+
+  { -PRESHIFT(0x00002000) /* -0.000030518 */,	/*  9 */
+    -PRESHIFT(0x0003f000) /* -0.000961304 */,
+     PRESHIFT(0x000dd000) /*  0.003372192 */,
+    -PRESHIFT(0x00428000) /* -0.016235352 */,
+     PRESHIFT(0x00500000) /*  0.019531250 */,
+    -PRESHIFT(0x02011000) /* -0.125259399 */,
+    -PRESHIFT(0x003e6000) /* -0.015228271 */,
+    -PRESHIFT(0x0d11e000) /* -0.816864014 */,
+     PRESHIFT(0x116fc000) /*  1.089782715 */,
+     PRESHIFT(0x052c5000) /*  0.323318481 */,
+     PRESHIFT(0x02616000) /*  0.148773193 */,
+     PRESHIFT(0x007d6000) /*  0.030609131 */,
+     PRESHIFT(0x007aa000) /*  0.029937744 */,
+     PRESHIFT(0x00024000) /*  0.000549316 */,
+     PRESHIFT(0x0009a000) /*  0.002349854 */,
+     PRESHIFT(0x0000b000) /*  0.000167847 */,
+
+    -PRESHIFT(0x00002000) /* -0.000030518 */,
+    -PRESHIFT(0x0003f000) /* -0.000961304 */,
+     PRESHIFT(0x000dd000) /*  0.003372192 */,
+    -PRESHIFT(0x00428000) /* -0.016235352 */,
+     PRESHIFT(0x00500000) /*  0.019531250 */,
+    -PRESHIFT(0x02011000) /* -0.125259399 */,
+    -PRESHIFT(0x003e6000) /* -0.015228271 */,
+    -PRESHIFT(0x0d11e000) /* -0.816864014 */,
+     PRESHIFT(0x116fc000) /*  1.089782715 */,
+     PRESHIFT(0x052c5000) /*  0.323318481 */,
+     PRESHIFT(0x02616000) /*  0.148773193 */,
+     PRESHIFT(0x007d6000) /*  0.030609131 */,
+     PRESHIFT(0x007aa000) /*  0.029937744 */,
+     PRESHIFT(0x00024000) /*  0.000549316 */,
+     PRESHIFT(0x0009a000) /*  0.002349854 */,
+     PRESHIFT(0x0000b000) /*  0.000167847 */ },
+
+  { -PRESHIFT(0x00002000) /* -0.000030518 */,	/* 10 */
+    -PRESHIFT(0x00044000) /* -0.001037598 */,
+     PRESHIFT(0x000d7000) /*  0.003280640 */,
+    -PRESHIFT(0x00471000) /* -0.017349243 */,
+     PRESHIFT(0x0046b000) /*  0.017257690 */,
+    -PRESHIFT(0x0212b000) /* -0.129562378 */,
+    -PRESHIFT(0x0084a000) /* -0.032379150 */,
+    -PRESHIFT(0x0d78a000) /* -0.841949463 */,
+     PRESHIFT(0x113be000) /*  1.077117920 */,
+     PRESHIFT(0x04c16000) /*  0.297210693 */,
+     PRESHIFT(0x02687000) /*  0.150497437 */,
+     PRESHIFT(0x0069c000) /*  0.025817871 */,
+     PRESHIFT(0x0077f000) /*  0.029281616 */,
+     PRESHIFT(0x00002000) /*  0.000030518 */,
+     PRESHIFT(0x00093000) /*  0.002243042 */,
+     PRESHIFT(0x0000a000) /*  0.000152588 */,
+
+    -PRESHIFT(0x00002000) /* -0.000030518 */,
+    -PRESHIFT(0x00044000) /* -0.001037598 */,
+     PRESHIFT(0x000d7000) /*  0.003280640 */,
+    -PRESHIFT(0x00471000) /* -0.017349243 */,
+     PRESHIFT(0x0046b000) /*  0.017257690 */,
+    -PRESHIFT(0x0212b000) /* -0.129562378 */,
+    -PRESHIFT(0x0084a000) /* -0.032379150 */,
+    -PRESHIFT(0x0d78a000) /* -0.841949463 */,
+     PRESHIFT(0x113be000) /*  1.077117920 */,
+     PRESHIFT(0x04c16000) /*  0.297210693 */,
+     PRESHIFT(0x02687000) /*  0.150497437 */,
+     PRESHIFT(0x0069c000) /*  0.025817871 */,
+     PRESHIFT(0x0077f000) /*  0.029281616 */,
+     PRESHIFT(0x00002000) /*  0.000030518 */,
+     PRESHIFT(0x00093000) /*  0.002243042 */,
+     PRESHIFT(0x0000a000) /*  0.000152588 */ },
+
+  { -PRESHIFT(0x00003000) /* -0.000045776 */,	/* 11 */
+    -PRESHIFT(0x00049000) /* -0.001113892 */,
+     PRESHIFT(0x000d0000) /*  0.003173828 */,
+    -PRESHIFT(0x004ba000) /* -0.018463135 */,
+     PRESHIFT(0x003ca000) /*  0.014801025 */,
+    -PRESHIFT(0x02233000) /* -0.133590698 */,
+    -PRESHIFT(0x00ce4000) /* -0.050354004 */,
+    -PRESHIFT(0x0ddca000) /* -0.866363525 */,
+     PRESHIFT(0x1102f000) /*  1.063217163 */,
+     PRESHIFT(0x04587000) /*  0.271591187 */,
+     PRESHIFT(0x026cf000) /*  0.151596069 */,
+     PRESHIFT(0x0056c000) /*  0.021179199 */,
+     PRESHIFT(0x0074e000) /*  0.028533936 */,
+    -PRESHIFT(0x0001d000) /* -0.000442505 */,
+     PRESHIFT(0x0008b000) /*  0.002120972 */,
+     PRESHIFT(0x00009000) /*  0.000137329 */,
+
+    -PRESHIFT(0x00003000) /* -0.000045776 */,
+    -PRESHIFT(0x00049000) /* -0.001113892 */,
+     PRESHIFT(0x000d0000) /*  0.003173828 */,
+    -PRESHIFT(0x004ba000) /* -0.018463135 */,
+     PRESHIFT(0x003ca000) /*  0.014801025 */,
+    -PRESHIFT(0x02233000) /* -0.133590698 */,
+    -PRESHIFT(0x00ce4000) /* -0.050354004 */,
+    -PRESHIFT(0x0ddca000) /* -0.866363525 */,
+     PRESHIFT(0x1102f000) /*  1.063217163 */,
+     PRESHIFT(0x04587000) /*  0.271591187 */,
+     PRESHIFT(0x026cf000) /*  0.151596069 */,
+     PRESHIFT(0x0056c000) /*  0.021179199 */,
+     PRESHIFT(0x0074e000) /*  0.028533936 */,
+    -PRESHIFT(0x0001d000) /* -0.000442505 */,
+     PRESHIFT(0x0008b000) /*  0.002120972 */,
+     PRESHIFT(0x00009000) /*  0.000137329 */ },
+
+  { -PRESHIFT(0x00003000) /* -0.000045776 */,	/* 12 */
+    -PRESHIFT(0x0004f000) /* -0.001205444 */,
+     PRESHIFT(0x000c8000) /*  0.003051758 */,
+    -PRESHIFT(0x00503000) /* -0.019577026 */,
+     PRESHIFT(0x0031a000) /*  0.012115479 */,
+    -PRESHIFT(0x02326000) /* -0.137298584 */,
+    -PRESHIFT(0x011b5000) /* -0.069168091 */,
+    -PRESHIFT(0x0e3dd000) /* -0.890090942 */,
+     PRESHIFT(0x10c54000) /*  1.048156738 */,
+     PRESHIFT(0x03f1b000) /*  0.246505737 */,
+     PRESHIFT(0x026ee000) /*  0.152069092 */,
+     PRESHIFT(0x00447000) /*  0.016708374 */,
+     PRESHIFT(0x00719000) /*  0.027725220 */,
+    -PRESHIFT(0x00039000) /* -0.000869751 */,
+     PRESHIFT(0x00084000) /*  0.002014160 */,
+     PRESHIFT(0x00008000) /*  0.000122070 */,
+
+    -PRESHIFT(0x00003000) /* -0.000045776 */,
+    -PRESHIFT(0x0004f000) /* -0.001205444 */,
+     PRESHIFT(0x000c8000) /*  0.003051758 */,
+    -PRESHIFT(0x00503000) /* -0.019577026 */,
+     PRESHIFT(0x0031a000) /*  0.012115479 */,
+    -PRESHIFT(0x02326000) /* -0.137298584 */,
+    -PRESHIFT(0x011b5000) /* -0.069168091 */,
+    -PRESHIFT(0x0e3dd000) /* -0.890090942 */,
+     PRESHIFT(0x10c54000) /*  1.048156738 */,
+     PRESHIFT(0x03f1b000) /*  0.246505737 */,
+     PRESHIFT(0x026ee000) /*  0.152069092 */,
+     PRESHIFT(0x00447000) /*  0.016708374 */,
+     PRESHIFT(0x00719000) /*  0.027725220 */,
+    -PRESHIFT(0x00039000) /* -0.000869751 */,
+     PRESHIFT(0x00084000) /*  0.002014160 */,
+     PRESHIFT(0x00008000) /*  0.000122070 */ },
+
+  { -PRESHIFT(0x00004000) /* -0.000061035 */,	/* 13 */
+    -PRESHIFT(0x00055000) /* -0.001296997 */,
+     PRESHIFT(0x000bd000) /*  0.002883911 */,
+    -PRESHIFT(0x0054c000) /* -0.020690918 */,
+     PRESHIFT(0x0025d000) /*  0.009231567 */,
+    -PRESHIFT(0x02403000) /* -0.140670776 */,
+    -PRESHIFT(0x016ba000) /* -0.088775635 */,
+    -PRESHIFT(0x0e9be000) /* -0.913055420 */,
+     PRESHIFT(0x1082d000) /*  1.031936646 */,
+     PRESHIFT(0x038d4000) /*  0.221984863 */,
+     PRESHIFT(0x026e7000) /*  0.151962280 */,
+     PRESHIFT(0x0032e000) /*  0.012420654 */,
+     PRESHIFT(0x006df000) /*  0.026840210 */,
+    -PRESHIFT(0x00053000) /* -0.001266479 */,
+     PRESHIFT(0x0007d000) /*  0.001907349 */,
+     PRESHIFT(0x00007000) /*  0.000106812 */,
+
+    -PRESHIFT(0x00004000) /* -0.000061035 */,
+    -PRESHIFT(0x00055000) /* -0.001296997 */,
+     PRESHIFT(0x000bd000) /*  0.002883911 */,
+    -PRESHIFT(0x0054c000) /* -0.020690918 */,
+     PRESHIFT(0x0025d000) /*  0.009231567 */,
+    -PRESHIFT(0x02403000) /* -0.140670776 */,
+    -PRESHIFT(0x016ba000) /* -0.088775635 */,
+    -PRESHIFT(0x0e9be000) /* -0.913055420 */,
+     PRESHIFT(0x1082d000) /*  1.031936646 */,
+     PRESHIFT(0x038d4000) /*  0.221984863 */,
+     PRESHIFT(0x026e7000) /*  0.151962280 */,
+     PRESHIFT(0x0032e000) /*  0.012420654 */,
+     PRESHIFT(0x006df000) /*  0.026840210 */,
+    -PRESHIFT(0x00053000) /* -0.001266479 */,
+     PRESHIFT(0x0007d000) /*  0.001907349 */,
+     PRESHIFT(0x00007000) /*  0.000106812 */ },
+
+  { -PRESHIFT(0x00004000) /* -0.000061035 */,	/* 14 */
+    -PRESHIFT(0x0005b000) /* -0.001388550 */,
+     PRESHIFT(0x000b1000) /*  0.002700806 */,
+    -PRESHIFT(0x00594000) /* -0.021789551 */,
+     PRESHIFT(0x00192000) /*  0.006134033 */,
+    -PRESHIFT(0x024c8000) /* -0.143676758 */,
+    -PRESHIFT(0x01bf2000) /* -0.109161377 */,
+    -PRESHIFT(0x0ef69000) /* -0.935195923 */,
+     PRESHIFT(0x103be000) /*  1.014617920 */,
+     PRESHIFT(0x032b4000) /*  0.198059082 */,
+     PRESHIFT(0x026bc000) /*  0.151306152 */,
+     PRESHIFT(0x00221000) /*  0.008316040 */,
+     PRESHIFT(0x006a2000) /*  0.025909424 */,
+    -PRESHIFT(0x0006a000) /* -0.001617432 */,
+     PRESHIFT(0x00075000) /*  0.001785278 */,
+     PRESHIFT(0x00007000) /*  0.000106812 */,
+
+    -PRESHIFT(0x00004000) /* -0.000061035 */,
+    -PRESHIFT(0x0005b000) /* -0.001388550 */,
+     PRESHIFT(0x000b1000) /*  0.002700806 */,
+    -PRESHIFT(0x00594000) /* -0.021789551 */,
+     PRESHIFT(0x00192000) /*  0.006134033 */,
+    -PRESHIFT(0x024c8000) /* -0.143676758 */,
+    -PRESHIFT(0x01bf2000) /* -0.109161377 */,
+    -PRESHIFT(0x0ef69000) /* -0.935195923 */,
+     PRESHIFT(0x103be000) /*  1.014617920 */,
+     PRESHIFT(0x032b4000) /*  0.198059082 */,
+     PRESHIFT(0x026bc000) /*  0.151306152 */,
+     PRESHIFT(0x00221000) /*  0.008316040 */,
+     PRESHIFT(0x006a2000) /*  0.025909424 */,
+    -PRESHIFT(0x0006a000) /* -0.001617432 */,
+     PRESHIFT(0x00075000) /*  0.001785278 */,
+     PRESHIFT(0x00007000) /*  0.000106812 */ },
+
+  { -PRESHIFT(0x00005000) /* -0.000076294 */,	/* 15 */
+    -PRESHIFT(0x00061000) /* -0.001480103 */,
+     PRESHIFT(0x000a3000) /*  0.002487183 */,
+    -PRESHIFT(0x005da000) /* -0.022857666 */,
+     PRESHIFT(0x000b9000) /*  0.002822876 */,
+    -PRESHIFT(0x02571000) /* -0.146255493 */,
+    -PRESHIFT(0x0215c000) /* -0.130310059 */,
+    -PRESHIFT(0x0f4dc000) /* -0.956481934 */,
+     PRESHIFT(0x0ff0a000) /*  0.996246338 */,
+     PRESHIFT(0x02cbf000) /*  0.174789429 */,
+     PRESHIFT(0x0266e000) /*  0.150115967 */,
+     PRESHIFT(0x00120000) /*  0.004394531 */,
+     PRESHIFT(0x00662000) /*  0.024932861 */,
+    -PRESHIFT(0x0007f000) /* -0.001937866 */,
+     PRESHIFT(0x0006f000) /*  0.001693726 */,
+     PRESHIFT(0x00006000) /*  0.000091553 */,
+
+    -PRESHIFT(0x00005000) /* -0.000076294 */,
+    -PRESHIFT(0x00061000) /* -0.001480103 */,
+     PRESHIFT(0x000a3000) /*  0.002487183 */,
+    -PRESHIFT(0x005da000) /* -0.022857666 */,
+     PRESHIFT(0x000b9000) /*  0.002822876 */,
+    -PRESHIFT(0x02571000) /* -0.146255493 */,
+    -PRESHIFT(0x0215c000) /* -0.130310059 */,
+    -PRESHIFT(0x0f4dc000) /* -0.956481934 */,
+     PRESHIFT(0x0ff0a000) /*  0.996246338 */,
+     PRESHIFT(0x02cbf000) /*  0.174789429 */,
+     PRESHIFT(0x0266e000) /*  0.150115967 */,
+     PRESHIFT(0x00120000) /*  0.004394531 */,
+     PRESHIFT(0x00662000) /*  0.024932861 */,
+    -PRESHIFT(0x0007f000) /* -0.001937866 */,
+     PRESHIFT(0x0006f000) /*  0.001693726 */,
+     PRESHIFT(0x00006000) /*  0.000091553 */ },
+
+  { -PRESHIFT(0x00005000) /* -0.000076294 */,	/* 16 */
+    -PRESHIFT(0x00068000) /* -0.001586914 */,
+     PRESHIFT(0x00092000) /*  0.002227783 */,
+    -PRESHIFT(0x0061f000) /* -0.023910522 */,
+    -PRESHIFT(0x0002d000) /* -0.000686646 */,
+    -PRESHIFT(0x025ff000) /* -0.148422241 */,
+    -PRESHIFT(0x026f7000) /* -0.152206421 */,
+    -PRESHIFT(0x0fa13000) /* -0.976852417 */,
+     PRESHIFT(0x0fa13000) /*  0.976852417 */,
+     PRESHIFT(0x026f7000) /*  0.152206421 */,
+     PRESHIFT(0x025ff000) /*  0.148422241 */,
+     PRESHIFT(0x0002d000) /*  0.000686646 */,
+     PRESHIFT(0x0061f000) /*  0.023910522 */,
+    -PRESHIFT(0x00092000) /* -0.002227783 */,
+     PRESHIFT(0x00068000) /*  0.001586914 */,
+     PRESHIFT(0x00005000) /*  0.000076294 */,
+
+    -PRESHIFT(0x00005000) /* -0.000076294 */,
+    -PRESHIFT(0x00068000) /* -0.001586914 */,
+     PRESHIFT(0x00092000) /*  0.002227783 */,
+    -PRESHIFT(0x0061f000) /* -0.023910522 */,
+    -PRESHIFT(0x0002d000) /* -0.000686646 */,
+    -PRESHIFT(0x025ff000) /* -0.148422241 */,
+    -PRESHIFT(0x026f7000) /* -0.152206421 */,
+    -PRESHIFT(0x0fa13000) /* -0.976852417 */,
+     PRESHIFT(0x0fa13000) /*  0.976852417 */,
+     PRESHIFT(0x026f7000) /*  0.152206421 */,
+     PRESHIFT(0x025ff000) /*  0.148422241 */,
+     PRESHIFT(0x0002d000) /*  0.000686646 */,
+     PRESHIFT(0x0061f000) /*  0.023910522 */,
+    -PRESHIFT(0x00092000) /* -0.002227783 */,
+     PRESHIFT(0x00068000) /*  0.001586914 */,
+     PRESHIFT(0x00005000) /*  0.000076294 */ }

code/libmad-0.15.1b/bit.c

@@ -0,0 +1,237 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: bit.c,v 1.12 2004/01/23 09:41:32 rob Exp $
+ */
+
+# if 1 //ifdef HAVE_CONFIG_H
+#  include "config.h"
+# endif
+
+# include "global.h"
+
+# ifdef HAVE_LIMITS_H
+#  include <limits.h>
+# else
+#  define CHAR_BIT  8
+# endif
+
+# include "bit.h"
+
+/*
+ * This is the lookup table for computing the CRC-check word.
+ * As described in section 2.4.3.1 and depicted in Figure A.9
+ * of ISO/IEC 11172-3, the generator polynomial is:
+ *
+ * G(X) = X^16 + X^15 + X^2 + 1
+ */
+static
+unsigned short const crc_table[256] = {
+  0x0000, 0x8005, 0x800f, 0x000a, 0x801b, 0x001e, 0x0014, 0x8011,
+  0x8033, 0x0036, 0x003c, 0x8039, 0x0028, 0x802d, 0x8027, 0x0022,
+  0x8063, 0x0066, 0x006c, 0x8069, 0x0078, 0x807d, 0x8077, 0x0072,
+  0x0050, 0x8055, 0x805f, 0x005a, 0x804b, 0x004e, 0x0044, 0x8041,
+  0x80c3, 0x00c6, 0x00cc, 0x80c9, 0x00d8, 0x80dd, 0x80d7, 0x00d2,
+  0x00f0, 0x80f5, 0x80ff, 0x00fa, 0x80eb, 0x00ee, 0x00e4, 0x80e1,
+  0x00a0, 0x80a5, 0x80af, 0x00aa, 0x80bb, 0x00be, 0x00b4, 0x80b1,
+  0x8093, 0x0096, 0x009c, 0x8099, 0x0088, 0x808d, 0x8087, 0x0082,
+
+  0x8183, 0x0186, 0x018c, 0x8189, 0x0198, 0x819d, 0x8197, 0x0192,
+  0x01b0, 0x81b5, 0x81bf, 0x01ba, 0x81ab, 0x01ae, 0x01a4, 0x81a1,
+  0x01e0, 0x81e5, 0x81ef, 0x01ea, 0x81fb, 0x01fe, 0x01f4, 0x81f1,
+  0x81d3, 0x01d6, 0x01dc, 0x81d9, 0x01c8, 0x81cd, 0x81c7, 0x01c2,
+  0x0140, 0x8145, 0x814f, 0x014a, 0x815b, 0x015e, 0x0154, 0x8151,
+  0x8173, 0x0176, 0x017c, 0x8179, 0x0168, 0x816d, 0x8167, 0x0162,
+  0x8123, 0x0126, 0x012c, 0x8129, 0x0138, 0x813d, 0x8137, 0x0132,
+  0x0110, 0x8115, 0x811f, 0x011a, 0x810b, 0x010e, 0x0104, 0x8101,
+
+  0x8303, 0x0306, 0x030c, 0x8309, 0x0318, 0x831d, 0x8317, 0x0312,
+  0x0330, 0x8335, 0x833f, 0x033a, 0x832b, 0x032e, 0x0324, 0x8321,
+  0x0360, 0x8365, 0x836f, 0x036a, 0x837b, 0x037e, 0x0374, 0x8371,
+  0x8353, 0x0356, 0x035c, 0x8359, 0x0348, 0x834d, 0x8347, 0x0342,
+  0x03c0, 0x83c5, 0x83cf, 0x03ca, 0x83db, 0x03de, 0x03d4, 0x83d1,
+  0x83f3, 0x03f6, 0x03fc, 0x83f9, 0x03e8, 0x83ed, 0x83e7, 0x03e2,
+  0x83a3, 0x03a6, 0x03ac, 0x83a9, 0x03b8, 0x83bd, 0x83b7, 0x03b2,
+  0x0390, 0x8395, 0x839f, 0x039a, 0x838b, 0x038e, 0x0384, 0x8381,
+
+  0x0280, 0x8285, 0x828f, 0x028a, 0x829b, 0x029e, 0x0294, 0x8291,
+  0x82b3, 0x02b6, 0x02bc, 0x82b9, 0x02a8, 0x82ad, 0x82a7, 0x02a2,
+  0x82e3, 0x02e6, 0x02ec, 0x82e9, 0x02f8, 0x82fd, 0x82f7, 0x02f2,
+  0x02d0, 0x82d5, 0x82df, 0x02da, 0x82cb, 0x02ce, 0x02c4, 0x82c1,
+  0x8243, 0x0246, 0x024c, 0x8249, 0x0258, 0x825d, 0x8257, 0x0252,
+  0x0270, 0x8275, 0x827f, 0x027a, 0x826b, 0x026e, 0x0264, 0x8261,
+  0x0220, 0x8225, 0x822f, 0x022a, 0x823b, 0x023e, 0x0234, 0x8231,
+  0x8213, 0x0216, 0x021c, 0x8219, 0x0208, 0x820d, 0x8207, 0x0202
+};
+
+# define CRC_POLY  0x8005
+
+/*
+ * NAME:	bit->init()
+ * DESCRIPTION:	initialize bit pointer struct
+ */
+void mad_bit_init(struct mad_bitptr *bitptr, unsigned char const *byte)
+{
+  bitptr->byte  = byte;
+  bitptr->cache = 0;
+  bitptr->left  = CHAR_BIT;
+}
+
+/*
+ * NAME:	bit->length()
+ * DESCRIPTION:	return number of bits between start and end points
+ */
+unsigned int mad_bit_length(struct mad_bitptr const *begin,
+			    struct mad_bitptr const *end)
+{
+  return begin->left +
+    CHAR_BIT * (end->byte - (begin->byte + 1)) + (CHAR_BIT - end->left);
+}
+
+/*
+ * NAME:	bit->nextbyte()
+ * DESCRIPTION:	return pointer to next unprocessed byte
+ */
+unsigned char const *mad_bit_nextbyte(struct mad_bitptr const *bitptr)
+{
+  return bitptr->left == CHAR_BIT ? bitptr->byte : bitptr->byte + 1;
+}
+
+/*
+ * NAME:	bit->skip()
+ * DESCRIPTION:	advance bit pointer
+ */
+void mad_bit_skip(struct mad_bitptr *bitptr, unsigned int len)
+{
+  bitptr->byte += len / CHAR_BIT;
+  bitptr->left -= len % CHAR_BIT;
+
+  if (bitptr->left > CHAR_BIT) {
+    bitptr->byte++;
+    bitptr->left += CHAR_BIT;
+  }
+
+  if (bitptr->left < CHAR_BIT)
+    bitptr->cache = *bitptr->byte;
+}
+
+/*
+ * NAME:	bit->read()
+ * DESCRIPTION:	read an arbitrary number of bits and return their UIMSBF value
+ */
+unsigned long mad_bit_read(struct mad_bitptr *bitptr, unsigned int len)
+{
+  register unsigned long value;
+
+  if (bitptr->left == CHAR_BIT)
+    bitptr->cache = *bitptr->byte;
+
+  if (len < bitptr->left) {
+    value = (bitptr->cache & ((1 << bitptr->left) - 1)) >>
+      (bitptr->left - len);
+    bitptr->left -= len;
+
+    return value;
+  }
+
+  /* remaining bits in current byte */
+
+  value = bitptr->cache & ((1 << bitptr->left) - 1);
+  len  -= bitptr->left;
+
+  bitptr->byte++;
+  bitptr->left = CHAR_BIT;
+
+  /* more bytes */
+
+  while (len >= CHAR_BIT) {
+    value = (value << CHAR_BIT) | *bitptr->byte++;
+    len  -= CHAR_BIT;
+  }
+
+  if (len > 0) {
+    bitptr->cache = *bitptr->byte;
+
+    value = (value << len) | (bitptr->cache >> (CHAR_BIT - len));
+    bitptr->left -= len;
+  }
+
+  return value;
+}
+
+# if 0
+/*
+ * NAME:	bit->write()
+ * DESCRIPTION:	write an arbitrary number of bits
+ */
+void mad_bit_write(struct mad_bitptr *bitptr, unsigned int len,
+		   unsigned long value)
+{
+  unsigned char *ptr;
+
+  ptr = (unsigned char *) bitptr->byte;
+
+  /* ... */
+}
+# endif
+
+/*
+ * NAME:	bit->crc()
+ * DESCRIPTION:	compute CRC-check word
+ */
+unsigned short mad_bit_crc(struct mad_bitptr bitptr, unsigned int len,
+			   unsigned short init)
+{
+  register unsigned int crc;
+
+  for (crc = init; len >= 32; len -= 32) {
+    register unsigned long data;
+
+    data = mad_bit_read(&bitptr, 32);
+
+    crc = (crc << 8) ^ crc_table[((crc >> 8) ^ (data >> 24)) & 0xff];
+    crc = (crc << 8) ^ crc_table[((crc >> 8) ^ (data >> 16)) & 0xff];
+    crc = (crc << 8) ^ crc_table[((crc >> 8) ^ (data >>  8)) & 0xff];
+    crc = (crc << 8) ^ crc_table[((crc >> 8) ^ (data >>  0)) & 0xff];
+  }
+
+  switch (len / 8) {
+  case 3: crc = (crc << 8) ^
+	    crc_table[((crc >> 8) ^ mad_bit_read(&bitptr, 8)) & 0xff];
+  case 2: crc = (crc << 8) ^
+	    crc_table[((crc >> 8) ^ mad_bit_read(&bitptr, 8)) & 0xff];
+  case 1: crc = (crc << 8) ^
+	    crc_table[((crc >> 8) ^ mad_bit_read(&bitptr, 8)) & 0xff];
+
+  len %= 8;
+
+  case 0: break;
+  }
+
+  while (len--) {
+    register unsigned int msb;
+
+    msb = mad_bit_read(&bitptr, 1) ^ (crc >> 15);
+
+    crc <<= 1;
+    if (msb & 1)
+      crc ^= CRC_POLY;
+  }
+
+  return crc & 0xffff;
+}

code/libmad-0.15.1b/bit.h

@@ -0,0 +1,47 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: bit.h,v 1.12 2004/01/23 09:41:32 rob Exp $
+ */
+
+# ifndef LIBMAD_BIT_H
+# define LIBMAD_BIT_H
+
+struct mad_bitptr {
+  unsigned char const *byte;
+  unsigned short cache;
+  unsigned short left;
+};
+
+void mad_bit_init(struct mad_bitptr *, unsigned char const *);
+
+# define mad_bit_finish(bitptr)		/* nothing */
+
+unsigned int mad_bit_length(struct mad_bitptr const *,
+			    struct mad_bitptr const *);
+
+# define mad_bit_bitsleft(bitptr)  ((bitptr)->left)
+unsigned char const *mad_bit_nextbyte(struct mad_bitptr const *);
+
+void mad_bit_skip(struct mad_bitptr *, unsigned int);
+unsigned long mad_bit_read(struct mad_bitptr *, unsigned int);
+void mad_bit_write(struct mad_bitptr *, unsigned int, unsigned long);
+
+unsigned short mad_bit_crc(struct mad_bitptr, unsigned int, unsigned short);
+
+# endif

code/libmad-0.15.1b/config.h

@@ -0,0 +1,238 @@
+/*
+===========================================================================
+Copyright (C) 2018 Zack Middleton
+
+This file is part of Quake III Arena source code.
+
+Quake III Arena source code is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Quake III Arena source code is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Quake III Arena source code; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+/* ZTM: libmad config.h for use with Quake 3 engine, based on config.h generated by configure. */
+/* NOTE: mad.h was modified to use config.h instead of generating mad.h for each platform. */
+/* NOTE: "ifdef HAVE_CONFIG_H" was replaced with "if 1 // ifdef HAVE_CONFIG_H" */
+/* NOTE: One of FPM_DEFAULT, FPM_INTEL, etc must be defined by the build system for files including mad.h in engine and the libmad source. */
+#include "../qcommon/q_platform.h"
+
+/* Define to enable diagnostic debugging support. */
+/* #undef DEBUG */
+
+/* Define to enable experimental code. */
+/* #undef EXPERIMENTAL */
+
+#ifdef _WIN32
+
+/* Define to 1 if you have the <assert.h> header file. */
+#define HAVE_ASSERT_H 1
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+/* #undef HAVE_DLFCN_H */
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the `fcntl' function. */
+/* #undef HAVE_FCNTL */
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have the `fork' function. */
+/* #undef HAVE_FORK */
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define if your MIPS CPU supports a 2-operand MADD16 instruction. */
+/* #undef HAVE_MADD16_ASM */
+
+/* Define if your MIPS CPU supports a 2-operand MADD instruction. */
+/* #undef HAVE_MADD_ASM */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `pipe' function. */
+/* #undef HAVE_PIPE */
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have <sys/wait.h> that is POSIX.1 compatible. */
+/* #undef HAVE_SYS_WAIT_H */
+
+/* Define to 1 if you have the <unistd.h> header file. */
+/* #undef HAVE_UNISTD_H */
+
+/* Define to 1 if you have the `waitpid' function. */
+/* #undef HAVE_WAITPID */
+
+#else // __linux__
+
+/* Define to 1 if you have the <assert.h> header file. */
+#define HAVE_ASSERT_H 1
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the <errno.h> header file. */
+#define HAVE_ERRNO_H 1
+
+/* Define to 1 if you have the `fcntl' function. */
+#define HAVE_FCNTL 1
+
+/* Define to 1 if you have the <fcntl.h> header file. */
+#define HAVE_FCNTL_H 1
+
+/* Define to 1 if you have the `fork' function. */
+#define HAVE_FORK 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the <limits.h> header file. */
+#define HAVE_LIMITS_H 1
+
+/* Define if your MIPS CPU supports a 2-operand MADD16 instruction. */
+/* #undef HAVE_MADD16_ASM */
+
+/* Define if your MIPS CPU supports a 2-operand MADD instruction. */
+/* #undef HAVE_MADD_ASM */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `pipe' function. */
+#define HAVE_PIPE 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have <sys/wait.h> that is POSIX.1 compatible. */
+#define HAVE_SYS_WAIT_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if you have the `waitpid' function. */
+#define HAVE_WAITPID 1
+
+#endif // _WIN32
+
+/* Define to disable debugging assertions. */
+/* #undef NDEBUG */
+
+/* Define to optimize for accuracy over speed. */
+/* #undef OPT_ACCURACY */
+
+/* Define to optimize for speed over accuracy. */
+/* #undef OPT_SPEED */
+
+/* Define to enable a fast subband synthesis approximation optimization. */
+/* #undef OPT_SSO */
+
+/* Define to influence a strict interpretation of the ISO/IEC standards, even
+   if this is in opposition with best accepted practices. */
+/* #undef OPT_STRICT */
+
+/* Name of package */
+#define PACKAGE "libmad"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT "support@underbit.com"
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "MPEG Audio Decoder"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "MPEG Audio Decoder 0.15.1b"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "libmad"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "0.15.1b"
+
+/* The size of a `int', as computed by sizeof. */
+#define SIZEOF_INT 4
+
+/* The size of a `long', as computed by sizeof. */
+/* ZTM: Assume 8 bytes on 64-bit Unix */
+#if defined idx64 && !defined _WIN32
+#define SIZEOF_LONG 8
+#else
+#define SIZEOF_LONG 4
+#endif
+
+/* The size of a `long long', as computed by sizeof. */
+#define SIZEOF_LONG_LONG 8
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+#define VERSION "0.15.1b"
+
+/* Define to 1 if your processor stores words with the most significant byte
+   first (like Motorola and SPARC, unlike Intel and VAX). */
+#ifdef Q3_BIG_ENDIAN
+#define WORDS_BIGENDIAN
+#else
+/* #undef WORDS_BIGENDIAN */
+#endif
+
+
+/* Define to empty if `const' does not conform to ANSI C. */
+/* #undef const */
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#define inline ID_INLINE
+
+/* Define to `int' if <sys/types.h> does not define. */
+/* #undef pid_t */

code/libmad-0.15.1b/decoder.c

@@ -0,0 +1,582 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: decoder.c,v 1.22 2004/01/23 09:41:32 rob Exp $
+ */
+
+# if 1 //ifdef HAVE_CONFIG_H
+#  include "config.h"
+# endif
+
+# include "global.h"
+
+# ifdef HAVE_SYS_TYPES_H
+#  include <sys/types.h>
+# endif
+
+# ifdef HAVE_SYS_WAIT_H
+#  include <sys/wait.h>
+# endif
+
+# ifdef HAVE_UNISTD_H
+#  include <unistd.h>
+# endif
+
+# ifdef HAVE_FCNTL_H
+#  include <fcntl.h>
+# endif
+
+# include <stdlib.h>
+
+# ifdef HAVE_ERRNO_H
+#  include <errno.h>
+# endif
+
+# include "stream.h"
+# include "frame.h"
+# include "synth.h"
+# include "decoder.h"
+
+/*
+ * NAME:	decoder->init()
+ * DESCRIPTION:	initialize a decoder object with callback routines
+ */
+void mad_decoder_init(struct mad_decoder *decoder, void *data,
+		      enum mad_flow (*input_func)(void *,
+						  struct mad_stream *),
+		      enum mad_flow (*header_func)(void *,
+						   struct mad_header const *),
+		      enum mad_flow (*filter_func)(void *,
+						   struct mad_stream const *,
+						   struct mad_frame *),
+		      enum mad_flow (*output_func)(void *,
+						   struct mad_header const *,
+						   struct mad_pcm *),
+		      enum mad_flow (*error_func)(void *,
+						  struct mad_stream *,
+						  struct mad_frame *),
+		      enum mad_flow (*message_func)(void *,
+						    void *, unsigned int *))
+{
+  decoder->mode         = -1;
+
+  decoder->options      = 0;
+
+  decoder->async.pid    = 0;
+  decoder->async.in     = -1;
+  decoder->async.out    = -1;
+
+  decoder->sync         = 0;
+
+  decoder->cb_data      = data;
+
+  decoder->input_func   = input_func;
+  decoder->header_func  = header_func;
+  decoder->filter_func  = filter_func;
+  decoder->output_func  = output_func;
+  decoder->error_func   = error_func;
+  decoder->message_func = message_func;
+}
+
+int mad_decoder_finish(struct mad_decoder *decoder)
+{
+# if defined(USE_ASYNC)
+  if (decoder->mode == MAD_DECODER_MODE_ASYNC && decoder->async.pid) {
+    pid_t pid;
+    int status;
+
+    close(decoder->async.in);
+
+    do
+      pid = waitpid(decoder->async.pid, &status, 0);
+    while (pid == -1 && errno == EINTR);
+
+    decoder->mode = -1;
+
+    close(decoder->async.out);
+
+    decoder->async.pid = 0;
+    decoder->async.in  = -1;
+    decoder->async.out = -1;
+
+    if (pid == -1)
+      return -1;
+
+    return (!WIFEXITED(status) || WEXITSTATUS(status)) ? -1 : 0;
+  }
+# endif
+
+  return 0;
+}
+
+# if defined(USE_ASYNC)
+static
+enum mad_flow send_io(int fd, void const *data, size_t len)
+{
+  char const *ptr = data;
+  ssize_t count;
+
+  while (len) {
+    do
+      count = write(fd, ptr, len);
+    while (count == -1 && errno == EINTR);
+
+    if (count == -1)
+      return MAD_FLOW_BREAK;
+
+    len -= count;
+    ptr += count;
+  }
+
+  return MAD_FLOW_CONTINUE;
+}
+
+static
+enum mad_flow receive_io(int fd, void *buffer, size_t len)
+{
+  char *ptr = buffer;
+  ssize_t count;
+
+  while (len) {
+    do
+      count = read(fd, ptr, len);
+    while (count == -1 && errno == EINTR);
+
+    if (count == -1)
+      return (errno == EAGAIN) ? MAD_FLOW_IGNORE : MAD_FLOW_BREAK;
+    else if (count == 0)
+      return MAD_FLOW_STOP;
+
+    len -= count;
+    ptr += count;
+  }
+
+  return MAD_FLOW_CONTINUE;
+}
+
+static
+enum mad_flow receive_io_blocking(int fd, void *buffer, size_t len)
+{
+  int flags, blocking;
+  enum mad_flow result;
+
+  flags = fcntl(fd, F_GETFL);
+  if (flags == -1)
+    return MAD_FLOW_BREAK;
+
+  blocking = flags & ~O_NONBLOCK;
+
+  if (blocking != flags &&
+      fcntl(fd, F_SETFL, blocking) == -1)
+    return MAD_FLOW_BREAK;
+
+  result = receive_io(fd, buffer, len);
+
+  if (flags != blocking &&
+      fcntl(fd, F_SETFL, flags) == -1)
+    return MAD_FLOW_BREAK;
+
+  return result;
+}
+
+static
+enum mad_flow send(int fd, void const *message, unsigned int size)
+{
+  enum mad_flow result;
+
+  /* send size */
+
+  result = send_io(fd, &size, sizeof(size));
+
+  /* send message */
+
+  if (result == MAD_FLOW_CONTINUE)
+    result = send_io(fd, message, size);
+
+  return result;
+}
+
+static
+enum mad_flow receive(int fd, void **message, unsigned int *size)
+{
+  enum mad_flow result;
+  unsigned int actual;
+
+  if (*message == 0)
+    *size = 0;
+
+  /* receive size */
+
+  result = receive_io(fd, &actual, sizeof(actual));
+
+  /* receive message */
+
+  if (result == MAD_FLOW_CONTINUE) {
+    if (actual > *size)
+      actual -= *size;
+    else {
+      *size  = actual;
+      actual = 0;
+    }
+
+    if (*size > 0) {
+      if (*message == 0) {
+	*message = malloc(*size);
+	if (*message == 0)
+	  return MAD_FLOW_BREAK;
+      }
+
+      result = receive_io_blocking(fd, *message, *size);
+    }
+
+    /* throw away remainder of message */
+
+    while (actual && result == MAD_FLOW_CONTINUE) {
+      char sink[256];
+      unsigned int len;
+
+      len = actual > sizeof(sink) ? sizeof(sink) : actual;
+
+      result = receive_io_blocking(fd, sink, len);
+
+      actual -= len;
+    }
+  }
+
+  return result;
+}
+
+static
+enum mad_flow check_message(struct mad_decoder *decoder)
+{
+  enum mad_flow result;
+  void *message = 0;
+  unsigned int size;
+
+  result = receive(decoder->async.in, &message, &size);
+
+  if (result == MAD_FLOW_CONTINUE) {
+    if (decoder->message_func == 0)
+      size = 0;
+    else {
+      result = decoder->message_func(decoder->cb_data, message, &size);
+
+      if (result == MAD_FLOW_IGNORE ||
+	  result == MAD_FLOW_BREAK)
+	size = 0;
+    }
+
+    if (send(decoder->async.out, message, size) != MAD_FLOW_CONTINUE)
+      result = MAD_FLOW_BREAK;
+  }
+
+  if (message)
+    free(message);
+
+  return result;
+}
+# endif
+
+static
+enum mad_flow error_default(void *data, struct mad_stream *stream,
+			    struct mad_frame *frame)
+{
+  int *bad_last_frame = data;
+
+  switch (stream->error) {
+  case MAD_ERROR_BADCRC:
+    if (*bad_last_frame)
+      mad_frame_mute(frame);
+    else
+      *bad_last_frame = 1;
+
+    return MAD_FLOW_IGNORE;
+
+  default:
+    return MAD_FLOW_CONTINUE;
+  }
+}
+
+static
+int run_sync(struct mad_decoder *decoder)
+{
+  enum mad_flow (*error_func)(void *, struct mad_stream *, struct mad_frame *);
+  void *error_data;
+  int bad_last_frame = 0;
+  struct mad_stream *stream;
+  struct mad_frame *frame;
+  struct mad_synth *synth;
+  int result = 0;
+
+  if (decoder->input_func == 0)
+    return 0;
+
+  if (decoder->error_func) {
+    error_func = decoder->error_func;
+    error_data = decoder->cb_data;
+  }
+  else {
+    error_func = error_default;
+    error_data = &bad_last_frame;
+  }
+
+  stream = &decoder->sync->stream;
+  frame  = &decoder->sync->frame;
+  synth  = &decoder->sync->synth;
+
+  mad_stream_init(stream);
+  mad_frame_init(frame);
+  mad_synth_init(synth);
+
+  mad_stream_options(stream, decoder->options);
+
+  do {
+    switch (decoder->input_func(decoder->cb_data, stream)) {
+    case MAD_FLOW_STOP:
+      goto done;
+    case MAD_FLOW_BREAK:
+      goto fail;
+    case MAD_FLOW_IGNORE:
+      continue;
+    case MAD_FLOW_CONTINUE:
+      break;
+    }
+
+    while (1) {
+# if defined(USE_ASYNC)
+      if (decoder->mode == MAD_DECODER_MODE_ASYNC) {
+	switch (check_message(decoder)) {
+	case MAD_FLOW_IGNORE:
+	case MAD_FLOW_CONTINUE:
+	  break;
+	case MAD_FLOW_BREAK:
+	  goto fail;
+	case MAD_FLOW_STOP:
+	  goto done;
+	}
+      }
+# endif
+
+      if (decoder->header_func) {
+	if (mad_header_decode(&frame->header, stream) == -1) {
+	  if (!MAD_RECOVERABLE(stream->error))
+	    break;
+
+	  switch (error_func(error_data, stream, frame)) {
+	  case MAD_FLOW_STOP:
+	    goto done;
+	  case MAD_FLOW_BREAK:
+	    goto fail;
+	  case MAD_FLOW_IGNORE:
+	  case MAD_FLOW_CONTINUE:
+	  default:
+	    continue;
+	  }
+	}
+
+	switch (decoder->header_func(decoder->cb_data, &frame->header)) {
+	case MAD_FLOW_STOP:
+	  goto done;
+	case MAD_FLOW_BREAK:
+	  goto fail;
+	case MAD_FLOW_IGNORE:
+	  continue;
+	case MAD_FLOW_CONTINUE:
+	  break;
+	}
+      }
+
+      if (mad_frame_decode(frame, stream) == -1) {
+	if (!MAD_RECOVERABLE(stream->error))
+	  break;
+
+	switch (error_func(error_data, stream, frame)) {
+	case MAD_FLOW_STOP:
+	  goto done;
+	case MAD_FLOW_BREAK:
+	  goto fail;
+	case MAD_FLOW_IGNORE:
+	  break;
+	case MAD_FLOW_CONTINUE:
+	default:
+	  continue;
+	}
+      }
+      else
+	bad_last_frame = 0;
+
+      if (decoder->filter_func) {
+	switch (decoder->filter_func(decoder->cb_data, stream, frame)) {
+	case MAD_FLOW_STOP:
+	  goto done;
+	case MAD_FLOW_BREAK:
+	  goto fail;
+	case MAD_FLOW_IGNORE:
+	  continue;
+	case MAD_FLOW_CONTINUE:
+	  break;
+	}
+      }
+
+      mad_synth_frame(synth, frame);
+
+      if (decoder->output_func) {
+	switch (decoder->output_func(decoder->cb_data,
+				     &frame->header, &synth->pcm)) {
+	case MAD_FLOW_STOP:
+	  goto done;
+	case MAD_FLOW_BREAK:
+	  goto fail;
+	case MAD_FLOW_IGNORE:
+	case MAD_FLOW_CONTINUE:
+	  break;
+	}
+      }
+    }
+  }
+  while (stream->error == MAD_ERROR_BUFLEN);
+
+ fail:
+  result = -1;
+
+ done:
+  mad_synth_finish(synth);
+  mad_frame_finish(frame);
+  mad_stream_finish(stream);
+
+  return result;
+}
+
+# if defined(USE_ASYNC)
+static
+int run_async(struct mad_decoder *decoder)
+{
+  pid_t pid;
+  int ptoc[2], ctop[2], flags;
+
+  if (pipe(ptoc) == -1)
+    return -1;
+
+  if (pipe(ctop) == -1) {
+    close(ptoc[0]);
+    close(ptoc[1]);
+    return -1;
+  }
+
+  flags = fcntl(ptoc[0], F_GETFL);
+  if (flags == -1 ||
+      fcntl(ptoc[0], F_SETFL, flags | O_NONBLOCK) == -1) {
+    close(ctop[0]);
+    close(ctop[1]);
+    close(ptoc[0]);
+    close(ptoc[1]);
+    return -1;
+  }
+
+  pid = fork();
+  if (pid == -1) {
+    close(ctop[0]);
+    close(ctop[1]);
+    close(ptoc[0]);
+    close(ptoc[1]);
+    return -1;
+  }
+
+  decoder->async.pid = pid;
+
+  if (pid) {
+    /* parent */
+
+    close(ptoc[0]);
+    close(ctop[1]);
+
+    decoder->async.in  = ctop[0];
+    decoder->async.out = ptoc[1];
+
+    return 0;
+  }
+
+  /* child */
+
+  close(ptoc[1]);
+  close(ctop[0]);
+
+  decoder->async.in  = ptoc[0];
+  decoder->async.out = ctop[1];
+
+  _exit(run_sync(decoder));
+
+  /* not reached */
+  return -1;
+}
+# endif
+
+/*
+ * NAME:	decoder->run()
+ * DESCRIPTION:	run the decoder thread either synchronously or asynchronously
+ */
+int mad_decoder_run(struct mad_decoder *decoder, enum mad_decoder_mode mode)
+{
+  int result;
+  int (*run)(struct mad_decoder *) = 0;
+
+  switch (decoder->mode = mode) {
+  case MAD_DECODER_MODE_SYNC:
+    run = run_sync;
+    break;
+
+  case MAD_DECODER_MODE_ASYNC:
+# if defined(USE_ASYNC)
+    run = run_async;
+# endif
+    break;
+  }
+
+  if (run == 0)
+    return -1;
+
+  decoder->sync = malloc(sizeof(*decoder->sync));
+  if (decoder->sync == 0)
+    return -1;
+
+  result = run(decoder);
+
+  free(decoder->sync);
+  decoder->sync = 0;
+
+  return result;
+}
+
+/*
+ * NAME:	decoder->message()
+ * DESCRIPTION:	send a message to and receive a reply from the decoder process
+ */
+int mad_decoder_message(struct mad_decoder *decoder,
+			void *message, unsigned int *len)
+{
+# if defined(USE_ASYNC)
+  if (decoder->mode != MAD_DECODER_MODE_ASYNC ||
+      send(decoder->async.out, message, *len) != MAD_FLOW_CONTINUE ||
+      receive(decoder->async.in, &message, len) != MAD_FLOW_CONTINUE)
+    return -1;
+
+  return 0;
+# else
+  return -1;
+# endif
+}

code/libmad-0.15.1b/decoder.h

@@ -0,0 +1,91 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: decoder.h,v 1.17 2004/01/23 09:41:32 rob Exp $
+ */
+
+# ifndef LIBMAD_DECODER_H
+# define LIBMAD_DECODER_H
+
+# include "stream.h"
+# include "frame.h"
+# include "synth.h"
+
+enum mad_decoder_mode {
+  MAD_DECODER_MODE_SYNC  = 0,
+  MAD_DECODER_MODE_ASYNC
+};
+
+enum mad_flow {
+  MAD_FLOW_CONTINUE = 0x0000,	/* continue normally */
+  MAD_FLOW_STOP     = 0x0010,	/* stop decoding normally */
+  MAD_FLOW_BREAK    = 0x0011,	/* stop decoding and signal an error */
+  MAD_FLOW_IGNORE   = 0x0020	/* ignore the current frame */
+};
+
+struct mad_decoder {
+  enum mad_decoder_mode mode;
+
+  int options;
+
+  struct {
+    long pid;
+    int in;
+    int out;
+  } async;
+
+  struct {
+    struct mad_stream stream;
+    struct mad_frame frame;
+    struct mad_synth synth;
+  } *sync;
+
+  void *cb_data;
+
+  enum mad_flow (*input_func)(void *, struct mad_stream *);
+  enum mad_flow (*header_func)(void *, struct mad_header const *);
+  enum mad_flow (*filter_func)(void *,
+			       struct mad_stream const *, struct mad_frame *);
+  enum mad_flow (*output_func)(void *,
+			       struct mad_header const *, struct mad_pcm *);
+  enum mad_flow (*error_func)(void *, struct mad_stream *, struct mad_frame *);
+  enum mad_flow (*message_func)(void *, void *, unsigned int *);
+};
+
+void mad_decoder_init(struct mad_decoder *, void *,
+		      enum mad_flow (*)(void *, struct mad_stream *),
+		      enum mad_flow (*)(void *, struct mad_header const *),
+		      enum mad_flow (*)(void *,
+					struct mad_stream const *,
+					struct mad_frame *),
+		      enum mad_flow (*)(void *,
+					struct mad_header const *,
+					struct mad_pcm *),
+		      enum mad_flow (*)(void *,
+					struct mad_stream *,
+					struct mad_frame *),
+		      enum mad_flow (*)(void *, void *, unsigned int *));
+int mad_decoder_finish(struct mad_decoder *);
+
+# define mad_decoder_options(decoder, opts)  \
+    ((void) ((decoder)->options = (opts)))
+
+int mad_decoder_run(struct mad_decoder *, enum mad_decoder_mode);
+int mad_decoder_message(struct mad_decoder *, void *, unsigned int *);
+
+# endif

code/libmad-0.15.1b/fixed.c

@@ -0,0 +1,81 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: fixed.c,v 1.13 2004/01/23 09:41:32 rob Exp $
+ */
+
+# if 1 //ifdef HAVE_CONFIG_H
+#  include "config.h"
+# endif
+
+# include "global.h"
+
+# include "fixed.h"
+
+/*
+ * NAME:	fixed->abs()
+ * DESCRIPTION:	return absolute value of a fixed-point number
+ */
+mad_fixed_t mad_f_abs(mad_fixed_t x)
+{
+  return x < 0 ? -x : x;
+}
+
+/*
+ * NAME:	fixed->div()
+ * DESCRIPTION:	perform division using fixed-point math
+ */
+mad_fixed_t mad_f_div(mad_fixed_t x, mad_fixed_t y)
+{
+  mad_fixed_t q, r;
+  unsigned int bits;
+
+  q = mad_f_abs(x / y);
+
+  if (x < 0) {
+    x = -x;
+    y = -y;
+  }
+
+  r = x % y;
+
+  if (y < 0) {
+    x = -x;
+    y = -y;
+  }
+
+  if (q > mad_f_intpart(MAD_F_MAX) &&
+      !(q == -mad_f_intpart(MAD_F_MIN) && r == 0 && (x < 0) != (y < 0)))
+    return 0;
+
+  for (bits = MAD_F_FRACBITS; bits && r; --bits) {
+    q <<= 1, r <<= 1;
+    if (r >= y)
+      r -= y, ++q;
+  }
+
+  /* round */
+  if (2 * r >= y)
+    ++q;
+
+  /* fix sign */
+  if ((x < 0) != (y < 0))
+    q = -q;
+
+  return q << bits;
+}

code/libmad-0.15.1b/fixed.h

@@ -0,0 +1,499 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: fixed.h,v 1.38 2004/02/17 02:02:03 rob Exp $
+ */
+
+# ifndef LIBMAD_FIXED_H
+# define LIBMAD_FIXED_H
+
+# if SIZEOF_INT >= 4
+typedef   signed int mad_fixed_t;
+
+typedef   signed int mad_fixed64hi_t;
+typedef unsigned int mad_fixed64lo_t;
+# else
+typedef   signed long mad_fixed_t;
+
+typedef   signed long mad_fixed64hi_t;
+typedef unsigned long mad_fixed64lo_t;
+# endif
+
+# if defined(_MSC_VER)
+#  define mad_fixed64_t  signed __int64
+# elif 1 || defined(__GNUC__)
+#  define mad_fixed64_t  signed long long
+# endif
+
+# if defined(FPM_FLOAT)
+typedef double mad_sample_t;
+# else
+typedef mad_fixed_t mad_sample_t;
+# endif
+
+/*
+ * Fixed-point format: 0xABBBBBBB
+ * A == whole part      (sign + 3 bits)
+ * B == fractional part (28 bits)
+ *
+ * Values are signed two's complement, so the effective range is:
+ * 0x80000000 to 0x7fffffff
+ *       -8.0 to +7.9999999962747097015380859375
+ *
+ * The smallest representable value is:
+ * 0x00000001 == 0.0000000037252902984619140625 (i.e. about 3.725e-9)
+ *
+ * 28 bits of fractional accuracy represent about
+ * 8.6 digits of decimal accuracy.
+ *
+ * Fixed-point numbers can be added or subtracted as normal
+ * integers, but multiplication requires shifting the 64-bit result
+ * from 56 fractional bits back to 28 (and rounding.)
+ *
+ * Changing the definition of MAD_F_FRACBITS is only partially
+ * supported, and must be done with care.
+ */
+
+# define MAD_F_FRACBITS		28
+
+# if MAD_F_FRACBITS == 28
+#  define MAD_F(x)		((mad_fixed_t) (x##L))
+# else
+#  if MAD_F_FRACBITS < 28
+#   warning "MAD_F_FRACBITS < 28"
+#   define MAD_F(x)		((mad_fixed_t)  \
+				 (((x##L) +  \
+				   (1L << (28 - MAD_F_FRACBITS - 1))) >>  \
+				  (28 - MAD_F_FRACBITS)))
+#  elif MAD_F_FRACBITS > 28
+#   error "MAD_F_FRACBITS > 28 not currently supported"
+#   define MAD_F(x)		((mad_fixed_t)  \
+				 ((x##L) << (MAD_F_FRACBITS - 28)))
+#  endif
+# endif
+
+# define MAD_F_MIN		((mad_fixed_t) -0x80000000L)
+# define MAD_F_MAX		((mad_fixed_t) +0x7fffffffL)
+
+# define MAD_F_ONE		MAD_F(0x10000000)
+
+# define mad_f_tofixed(x)	((mad_fixed_t)  \
+				 ((x) * (double) (1L << MAD_F_FRACBITS) + 0.5))
+# define mad_f_todouble(x)	((double)  \
+				 ((x) / (double) (1L << MAD_F_FRACBITS)))
+
+# define mad_f_intpart(x)	((x) >> MAD_F_FRACBITS)
+# define mad_f_fracpart(x)	((x) & ((1L << MAD_F_FRACBITS) - 1))
+				/* (x should be positive) */
+
+# define mad_f_fromint(x)	((x) << MAD_F_FRACBITS)
+
+# define mad_f_add(x, y)	((x) + (y))
+# define mad_f_sub(x, y)	((x) - (y))
+
+# if defined(FPM_FLOAT)
+#  error "FPM_FLOAT not yet supported"
+
+#  undef MAD_F
+#  define MAD_F(x)		mad_f_todouble(x)
+
+#  define mad_f_mul(x, y)	((x) * (y))
+#  define mad_f_scale64
+
+#  undef ASO_ZEROCHECK
+
+# elif defined(FPM_64BIT)
+
+/*
+ * This version should be the most accurate if 64-bit types are supported by
+ * the compiler, although it may not be the most efficient.
+ */
+#  if defined(OPT_ACCURACY)
+#   define mad_f_mul(x, y)  \
+    ((mad_fixed_t)  \
+     ((((mad_fixed64_t) (x) * (y)) +  \
+       (1L << (MAD_F_SCALEBITS - 1))) >> MAD_F_SCALEBITS))
+#  else
+#   define mad_f_mul(x, y)  \
+    ((mad_fixed_t) (((mad_fixed64_t) (x) * (y)) >> MAD_F_SCALEBITS))
+#  endif
+
+#  define MAD_F_SCALEBITS  MAD_F_FRACBITS
+
+/* --- Intel --------------------------------------------------------------- */
+
+# elif defined(FPM_INTEL)
+
+#  if defined(_MSC_VER)
+#   pragma warning(push)
+#   pragma warning(disable: 4035)  /* no return value */
+static __forceinline
+mad_fixed_t mad_f_mul_inline(mad_fixed_t x, mad_fixed_t y)
+{
+  enum {
+    fracbits = MAD_F_FRACBITS
+  };
+
+  __asm {
+    mov eax, x
+    imul y
+    shrd eax, edx, fracbits
+  }
+
+  /* implicit return of eax */
+}
+#   pragma warning(pop)
+
+#   define mad_f_mul		mad_f_mul_inline
+#   define mad_f_scale64
+#  else
+/*
+ * This Intel version is fast and accurate; the disposition of the least
+ * significant bit depends on OPT_ACCURACY via mad_f_scale64().
+ */
+#   define MAD_F_MLX(hi, lo, x, y)  \
+    asm ("imull %3"  \
+	 : "=a" (lo), "=d" (hi)  \
+	 : "%a" (x), "rm" (y)  \
+	 : "cc")
+
+#   if defined(OPT_ACCURACY)
+/*
+ * This gives best accuracy but is not very fast.
+ */
+#    define MAD_F_MLA(hi, lo, x, y)  \
+    ({ mad_fixed64hi_t __hi;  \
+       mad_fixed64lo_t __lo;  \
+       MAD_F_MLX(__hi, __lo, (x), (y));  \
+       asm ("addl %2,%0\n\t"  \
+	    "adcl %3,%1"  \
+	    : "=rm" (lo), "=rm" (hi)  \
+	    : "r" (__lo), "r" (__hi), "0" (lo), "1" (hi)  \
+	    : "cc");  \
+    })
+#   endif  /* OPT_ACCURACY */
+
+#   if defined(OPT_ACCURACY)
+/*
+ * Surprisingly, this is faster than SHRD followed by ADC.
+ */
+#    define mad_f_scale64(hi, lo)  \
+    ({ mad_fixed64hi_t __hi_;  \
+       mad_fixed64lo_t __lo_;  \
+       mad_fixed_t __result;  \
+       asm ("addl %4,%2\n\t"  \
+	    "adcl %5,%3"  \
+	    : "=rm" (__lo_), "=rm" (__hi_)  \
+	    : "0" (lo), "1" (hi),  \
+	      "ir" (1L << (MAD_F_SCALEBITS - 1)), "ir" (0)  \
+	    : "cc");  \
+       asm ("shrdl %3,%2,%1"  \
+	    : "=rm" (__result)  \
+	    : "0" (__lo_), "r" (__hi_), "I" (MAD_F_SCALEBITS)  \
+	    : "cc");  \
+       __result;  \
+    })
+#   elif defined(OPT_INTEL)
+/*
+ * Alternate Intel scaling that may or may not perform better.
+ */
+#    define mad_f_scale64(hi, lo)  \
+    ({ mad_fixed_t __result;  \
+       asm ("shrl %3,%1\n\t"  \
+	    "shll %4,%2\n\t"  \
+	    "orl %2,%1"  \
+	    : "=rm" (__result)  \
+	    : "0" (lo), "r" (hi),  \
+	      "I" (MAD_F_SCALEBITS), "I" (32 - MAD_F_SCALEBITS)  \
+	    : "cc");  \
+       __result;  \
+    })
+#   else
+#    define mad_f_scale64(hi, lo)  \
+    ({ mad_fixed_t __result;  \
+       asm ("shrdl %3,%2,%1"  \
+	    : "=rm" (__result)  \
+	    : "0" (lo), "r" (hi), "I" (MAD_F_SCALEBITS)  \
+	    : "cc");  \
+       __result;  \
+    })
+#   endif  /* OPT_ACCURACY */
+
+#   define MAD_F_SCALEBITS  MAD_F_FRACBITS
+#  endif
+
+/* --- ARM ----------------------------------------------------------------- */
+
+# elif defined(FPM_ARM)
+
+/* 
+ * This ARM V4 version is as accurate as FPM_64BIT but much faster. The
+ * least significant bit is properly rounded at no CPU cycle cost!
+ */
+# if 1
+/*
+ * This is faster than the default implementation via MAD_F_MLX() and
+ * mad_f_scale64().
+ */
+#  define mad_f_mul(x, y)  \
+    ({ mad_fixed64hi_t __hi;  \
+       mad_fixed64lo_t __lo;  \
+       mad_fixed_t __result;  \
+       asm ("smull	%0, %1, %3, %4\n\t"  \
+	    "movs	%0, %0, lsr %5\n\t"  \
+	    "adc	%2, %0, %1, lsl %6"  \
+	    : "=&r" (__lo), "=&r" (__hi), "=r" (__result)  \
+	    : "%r" (x), "r" (y),  \
+	      "M" (MAD_F_SCALEBITS), "M" (32 - MAD_F_SCALEBITS)  \
+	    : "cc");  \
+       __result;  \
+    })
+# endif
+
+#  define MAD_F_MLX(hi, lo, x, y)  \
+    asm ("smull	%0, %1, %2, %3"  \
+	 : "=&r" (lo), "=&r" (hi)  \
+	 : "%r" (x), "r" (y))
+
+#  define MAD_F_MLA(hi, lo, x, y)  \
+    asm ("smlal	%0, %1, %2, %3"  \
+	 : "+r" (lo), "+r" (hi)  \
+	 : "%r" (x), "r" (y))
+
+#  define MAD_F_MLN(hi, lo)  \
+    asm ("rsbs	%0, %2, #0\n\t"  \
+	 "rsc	%1, %3, #0"  \
+	 : "=r" (lo), "=r" (hi)  \
+	 : "0" (lo), "1" (hi)  \
+	 : "cc")
+
+#  define mad_f_scale64(hi, lo)  \
+    ({ mad_fixed_t __result;  \
+       asm ("movs	%0, %1, lsr %3\n\t"  \
+	    "adc	%0, %0, %2, lsl %4"  \
+	    : "=&r" (__result)  \
+	    : "r" (lo), "r" (hi),  \
+	      "M" (MAD_F_SCALEBITS), "M" (32 - MAD_F_SCALEBITS)  \
+	    : "cc");  \
+       __result;  \
+    })
+
+#  define MAD_F_SCALEBITS  MAD_F_FRACBITS
+
+/* --- MIPS ---------------------------------------------------------------- */
+
+# elif defined(FPM_MIPS)
+
+/*
+ * This MIPS version is fast and accurate; the disposition of the least
+ * significant bit depends on OPT_ACCURACY via mad_f_scale64().
+ */
+#  define MAD_F_MLX(hi, lo, x, y)  \
+    asm ("mult	%2,%3"  \
+	 : "=l" (lo), "=h" (hi)  \
+	 : "%r" (x), "r" (y))
+
+# if defined(HAVE_MADD_ASM)
+#  define MAD_F_MLA(hi, lo, x, y)  \
+    asm ("madd	%2,%3"  \
+	 : "+l" (lo), "+h" (hi)  \
+	 : "%r" (x), "r" (y))
+# elif defined(HAVE_MADD16_ASM)
+/*
+ * This loses significant accuracy due to the 16-bit integer limit in the
+ * multiply/accumulate instruction.
+ */
+#  define MAD_F_ML0(hi, lo, x, y)  \
+    asm ("mult	%2,%3"  \
+	 : "=l" (lo), "=h" (hi)  \
+	 : "%r" ((x) >> 12), "r" ((y) >> 16))
+#  define MAD_F_MLA(hi, lo, x, y)  \
+    asm ("madd16	%2,%3"  \
+	 : "+l" (lo), "+h" (hi)  \
+	 : "%r" ((x) >> 12), "r" ((y) >> 16))
+#  define MAD_F_MLZ(hi, lo)  ((mad_fixed_t) (lo))
+# endif
+
+# if defined(OPT_SPEED)
+#  define mad_f_scale64(hi, lo)  \
+    ((mad_fixed_t) ((hi) << (32 - MAD_F_SCALEBITS)))
+#  define MAD_F_SCALEBITS  MAD_F_FRACBITS
+# endif
+
+/* --- SPARC --------------------------------------------------------------- */
+
+# elif defined(FPM_SPARC)
+
+/*
+ * This SPARC V8 version is fast and accurate; the disposition of the least
+ * significant bit depends on OPT_ACCURACY via mad_f_scale64().
+ */
+#  define MAD_F_MLX(hi, lo, x, y)  \
+    asm ("smul %2, %3, %0\n\t"  \
+	 "rd %%y, %1"  \
+	 : "=r" (lo), "=r" (hi)  \
+	 : "%r" (x), "rI" (y))
+
+/* --- PowerPC ------------------------------------------------------------- */
+
+# elif defined(FPM_PPC)
+
+/*
+ * This PowerPC version is fast and accurate; the disposition of the least
+ * significant bit depends on OPT_ACCURACY via mad_f_scale64().
+ */
+#  define MAD_F_MLX(hi, lo, x, y)  \
+    do {  \
+      asm ("mullw %0,%1,%2"  \
+	   : "=r" (lo)  \
+	   : "%r" (x), "r" (y));  \
+      asm ("mulhw %0,%1,%2"  \
+	   : "=r" (hi)  \
+	   : "%r" (x), "r" (y));  \
+    }  \
+    while (0)
+
+#  if defined(OPT_ACCURACY)
+/*
+ * This gives best accuracy but is not very fast.
+ */
+#   define MAD_F_MLA(hi, lo, x, y)  \
+    ({ mad_fixed64hi_t __hi;  \
+       mad_fixed64lo_t __lo;  \
+       MAD_F_MLX(__hi, __lo, (x), (y));  \
+       asm ("addc %0,%2,%3\n\t"  \
+	    "adde %1,%4,%5"  \
+	    : "=r" (lo), "=r" (hi)  \
+	    : "%r" (lo), "r" (__lo),  \
+	      "%r" (hi), "r" (__hi)  \
+	    : "xer");  \
+    })
+#  endif
+
+#  if defined(OPT_ACCURACY)
+/*
+ * This is slower than the truncating version below it.
+ */
+#   define mad_f_scale64(hi, lo)  \
+    ({ mad_fixed_t __result, __round;  \
+       asm ("rotrwi %0,%1,%2"  \
+	    : "=r" (__result)  \
+	    : "r" (lo), "i" (MAD_F_SCALEBITS));  \
+       asm ("extrwi %0,%1,1,0"  \
+	    : "=r" (__round)  \
+	    : "r" (__result));  \
+       asm ("insrwi %0,%1,%2,0"  \
+	    : "+r" (__result)  \
+	    : "r" (hi), "i" (MAD_F_SCALEBITS));  \
+       asm ("add %0,%1,%2"  \
+	    : "=r" (__result)  \
+	    : "%r" (__result), "r" (__round));  \
+       __result;  \
+    })
+#  else
+#   define mad_f_scale64(hi, lo)  \
+    ({ mad_fixed_t __result;  \
+       asm ("rotrwi %0,%1,%2"  \
+	    : "=r" (__result)  \
+	    : "r" (lo), "i" (MAD_F_SCALEBITS));  \
+       asm ("insrwi %0,%1,%2,0"  \
+	    : "+r" (__result)  \
+	    : "r" (hi), "i" (MAD_F_SCALEBITS));  \
+       __result;  \
+    })
+#  endif
+
+#  define MAD_F_SCALEBITS  MAD_F_FRACBITS
+
+/* --- Default ------------------------------------------------------------- */
+
+# elif defined(FPM_DEFAULT)
+
+/*
+ * This version is the most portable but it loses significant accuracy.
+ * Furthermore, accuracy is biased against the second argument, so care
+ * should be taken when ordering operands.
+ *
+ * The scale factors are constant as this is not used with SSO.
+ *
+ * Pre-rounding is required to stay within the limits of compliance.
+ */
+#  if defined(OPT_SPEED)
+#   define mad_f_mul(x, y)	(((x) >> 12) * ((y) >> 16))
+#  else
+#   define mad_f_mul(x, y)	((((x) + (1L << 11)) >> 12) *  \
+				 (((y) + (1L << 15)) >> 16))
+#  endif
+
+/* ------------------------------------------------------------------------- */
+
+# else
+#  error "no FPM selected"
+# endif
+
+/* default implementations */
+
+# if !defined(mad_f_mul)
+#  define mad_f_mul(x, y)  \
+    ({ register mad_fixed64hi_t __hi;  \
+       register mad_fixed64lo_t __lo;  \
+       MAD_F_MLX(__hi, __lo, (x), (y));  \
+       mad_f_scale64(__hi, __lo);  \
+    })
+# endif
+
+# if !defined(MAD_F_MLA)
+#  define MAD_F_ML0(hi, lo, x, y)	((lo)  = mad_f_mul((x), (y)))
+#  define MAD_F_MLA(hi, lo, x, y)	((lo) += mad_f_mul((x), (y)))
+#  define MAD_F_MLN(hi, lo)		((lo)  = -(lo))
+#  define MAD_F_MLZ(hi, lo)		((void) (hi), (mad_fixed_t) (lo))
+# endif
+
+# if !defined(MAD_F_ML0)
+#  define MAD_F_ML0(hi, lo, x, y)	MAD_F_MLX((hi), (lo), (x), (y))
+# endif
+
+# if !defined(MAD_F_MLN)
+#  define MAD_F_MLN(hi, lo)		((hi) = ((lo) = -(lo)) ? ~(hi) : -(hi))
+# endif
+
+# if !defined(MAD_F_MLZ)
+#  define MAD_F_MLZ(hi, lo)		mad_f_scale64((hi), (lo))
+# endif
+
+# if !defined(mad_f_scale64)
+#  if defined(OPT_ACCURACY)
+#   define mad_f_scale64(hi, lo)  \
+    ((((mad_fixed_t)  \
+       (((hi) << (32 - (MAD_F_SCALEBITS - 1))) |  \
+	((lo) >> (MAD_F_SCALEBITS - 1)))) + 1) >> 1)
+#  else
+#   define mad_f_scale64(hi, lo)  \
+    ((mad_fixed_t)  \
+     (((hi) << (32 - MAD_F_SCALEBITS)) |  \
+      ((lo) >> MAD_F_SCALEBITS)))
+#  endif
+#  define MAD_F_SCALEBITS  MAD_F_FRACBITS
+# endif
+
+/* C routines */
+
+mad_fixed_t mad_f_abs(mad_fixed_t);
+mad_fixed_t mad_f_div(mad_fixed_t, mad_fixed_t);
+
+# endif

code/libmad-0.15.1b/frame.c

@@ -0,0 +1,503 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: frame.c,v 1.29 2004/02/04 22:59:19 rob Exp $
+ */
+
+# if 1 //ifdef HAVE_CONFIG_H
+#  include "config.h"
+# endif
+
+# include "global.h"
+
+# include <stdlib.h>
+
+# include "bit.h"
+# include "stream.h"
+# include "frame.h"
+# include "timer.h"
+# include "layer12.h"
+# include "layer3.h"
+
+static
+unsigned long const bitrate_table[5][15] = {
+  /* MPEG-1 */
+  { 0,  32000,  64000,  96000, 128000, 160000, 192000, 224000,  /* Layer I   */
+       256000, 288000, 320000, 352000, 384000, 416000, 448000 },
+  { 0,  32000,  48000,  56000,  64000,  80000,  96000, 112000,  /* Layer II  */
+       128000, 160000, 192000, 224000, 256000, 320000, 384000 },
+  { 0,  32000,  40000,  48000,  56000,  64000,  80000,  96000,  /* Layer III */
+       112000, 128000, 160000, 192000, 224000, 256000, 320000 },
+
+  /* MPEG-2 LSF */
+  { 0,  32000,  48000,  56000,  64000,  80000,  96000, 112000,  /* Layer I   */
+       128000, 144000, 160000, 176000, 192000, 224000, 256000 },
+  { 0,   8000,  16000,  24000,  32000,  40000,  48000,  56000,  /* Layers    */
+        64000,  80000,  96000, 112000, 128000, 144000, 160000 } /* II & III  */
+};
+
+static
+unsigned int const samplerate_table[3] = { 44100, 48000, 32000 };
+
+static
+int (*const decoder_table[3])(struct mad_stream *, struct mad_frame *) = {
+  mad_layer_I,
+  mad_layer_II,
+  mad_layer_III
+};
+
+/*
+ * NAME:	header->init()
+ * DESCRIPTION:	initialize header struct
+ */
+void mad_header_init(struct mad_header *header)
+{
+  header->layer          = 0;
+  header->mode           = 0;
+  header->mode_extension = 0;
+  header->emphasis       = 0;
+
+  header->bitrate        = 0;
+  header->samplerate     = 0;
+
+  header->crc_check      = 0;
+  header->crc_target     = 0;
+
+  header->flags          = 0;
+  header->private_bits   = 0;
+
+  header->duration       = mad_timer_zero;
+}
+
+/*
+ * NAME:	frame->init()
+ * DESCRIPTION:	initialize frame struct
+ */
+void mad_frame_init(struct mad_frame *frame)
+{
+  mad_header_init(&frame->header);
+
+  frame->options = 0;
+
+  frame->overlap = 0;
+  mad_frame_mute(frame);
+}
+
+/*
+ * NAME:	frame->finish()
+ * DESCRIPTION:	deallocate any dynamic memory associated with frame
+ */
+void mad_frame_finish(struct mad_frame *frame)
+{
+  mad_header_finish(&frame->header);
+
+  if (frame->overlap) {
+    free(frame->overlap);
+    frame->overlap = 0;
+  }
+}
+
+/*
+ * NAME:	decode_header()
+ * DESCRIPTION:	read header data and following CRC word
+ */
+static
+int decode_header(struct mad_header *header, struct mad_stream *stream)
+{
+  unsigned int index;
+
+  header->flags        = 0;
+  header->private_bits = 0;
+
+  /* header() */
+
+  /* syncword */
+  mad_bit_skip(&stream->ptr, 11);
+
+  /* MPEG 2.5 indicator (really part of syncword) */
+  if (mad_bit_read(&stream->ptr, 1) == 0)
+    header->flags |= MAD_FLAG_MPEG_2_5_EXT;
+
+  /* ID */
+  if (mad_bit_read(&stream->ptr, 1) == 0)
+    header->flags |= MAD_FLAG_LSF_EXT;
+  else if (header->flags & MAD_FLAG_MPEG_2_5_EXT) {
+    stream->error = MAD_ERROR_LOSTSYNC;
+    return -1;
+  }
+
+  /* layer */
+  header->layer = 4 - mad_bit_read(&stream->ptr, 2);
+
+  if (header->layer == 4) {
+    stream->error = MAD_ERROR_BADLAYER;
+    return -1;
+  }
+
+  /* protection_bit */
+  if (mad_bit_read(&stream->ptr, 1) == 0) {
+    header->flags    |= MAD_FLAG_PROTECTION;
+    header->crc_check = mad_bit_crc(stream->ptr, 16, 0xffff);
+  }
+
+  /* bitrate_index */
+  index = mad_bit_read(&stream->ptr, 4);
+
+  if (index == 15) {
+    stream->error = MAD_ERROR_BADBITRATE;
+    return -1;
+  }
+
+  if (header->flags & MAD_FLAG_LSF_EXT)
+    header->bitrate = bitrate_table[3 + (header->layer >> 1)][index];
+  else
+    header->bitrate = bitrate_table[header->layer - 1][index];
+
+  /* sampling_frequency */
+  index = mad_bit_read(&stream->ptr, 2);
+
+  if (index == 3) {
+    stream->error = MAD_ERROR_BADSAMPLERATE;
+    return -1;
+  }
+
+  header->samplerate = samplerate_table[index];
+
+  if (header->flags & MAD_FLAG_LSF_EXT) {
+    header->samplerate /= 2;
+
+    if (header->flags & MAD_FLAG_MPEG_2_5_EXT)
+      header->samplerate /= 2;
+  }
+
+  /* padding_bit */
+  if (mad_bit_read(&stream->ptr, 1))
+    header->flags |= MAD_FLAG_PADDING;
+
+  /* private_bit */
+  if (mad_bit_read(&stream->ptr, 1))
+    header->private_bits |= MAD_PRIVATE_HEADER;
+
+  /* mode */
+  header->mode = 3 - mad_bit_read(&stream->ptr, 2);
+
+  /* mode_extension */
+  header->mode_extension = mad_bit_read(&stream->ptr, 2);
+
+  /* copyright */
+  if (mad_bit_read(&stream->ptr, 1))
+    header->flags |= MAD_FLAG_COPYRIGHT;
+
+  /* original/copy */
+  if (mad_bit_read(&stream->ptr, 1))
+    header->flags |= MAD_FLAG_ORIGINAL;
+
+  /* emphasis */
+  header->emphasis = mad_bit_read(&stream->ptr, 2);
+
+# if defined(OPT_STRICT)
+  /*
+   * ISO/IEC 11172-3 says this is a reserved emphasis value, but
+   * streams exist which use it anyway. Since the value is not important
+   * to the decoder proper, we allow it unless OPT_STRICT is defined.
+   */
+  if (header->emphasis == MAD_EMPHASIS_RESERVED) {
+    stream->error = MAD_ERROR_BADEMPHASIS;
+    return -1;
+  }
+# endif
+
+  /* error_check() */
+
+  /* crc_check */
+  if (header->flags & MAD_FLAG_PROTECTION)
+    header->crc_target = mad_bit_read(&stream->ptr, 16);
+
+  return 0;
+}
+
+/*
+ * NAME:	free_bitrate()
+ * DESCRIPTION:	attempt to discover the bitstream's free bitrate
+ */
+static
+int free_bitrate(struct mad_stream *stream, struct mad_header const *header)
+{
+  struct mad_bitptr keep_ptr;
+  unsigned long rate = 0;
+  unsigned int pad_slot, slots_per_frame;
+  unsigned char const *ptr = 0;
+
+  keep_ptr = stream->ptr;
+
+  pad_slot = (header->flags & MAD_FLAG_PADDING) ? 1 : 0;
+  slots_per_frame = (header->layer == MAD_LAYER_III &&
+		     (header->flags & MAD_FLAG_LSF_EXT)) ? 72 : 144;
+
+  while (mad_stream_sync(stream) == 0) {
+    struct mad_stream peek_stream;
+    struct mad_header peek_header;
+
+    peek_stream = *stream;
+    peek_header = *header;
+
+    if (decode_header(&peek_header, &peek_stream) == 0 &&
+	peek_header.layer == header->layer &&
+	peek_header.samplerate == header->samplerate) {
+      unsigned int N;
+
+      ptr = mad_bit_nextbyte(&stream->ptr);
+
+      N = ptr - stream->this_frame;
+
+      if (header->layer == MAD_LAYER_I) {
+	rate = (unsigned long) header->samplerate *
+	  (N - 4 * pad_slot + 4) / 48 / 1000;
+      }
+      else {
+	rate = (unsigned long) header->samplerate *
+	  (N - pad_slot + 1) / slots_per_frame / 1000;
+      }
+
+      if (rate >= 8)
+	break;
+    }
+
+    mad_bit_skip(&stream->ptr, 8);
+  }
+
+  stream->ptr = keep_ptr;
+
+  if (rate < 8 || (header->layer == MAD_LAYER_III && rate > 640)) {
+    stream->error = MAD_ERROR_LOSTSYNC;
+    return -1;
+  }
+
+  stream->freerate = rate * 1000;
+
+  return 0;
+}
+
+/*
+ * NAME:	header->decode()
+ * DESCRIPTION:	read the next frame header from the stream
+ */
+int mad_header_decode(struct mad_header *header, struct mad_stream *stream)
+{
+  register unsigned char const *ptr, *end;
+  unsigned int pad_slot, N;
+
+  ptr = stream->next_frame;
+  end = stream->bufend;
+
+  if (ptr == 0) {
+    stream->error = MAD_ERROR_BUFPTR;
+    goto fail;
+  }
+
+  /* stream skip */
+  if (stream->skiplen) {
+    if (!stream->sync)
+      ptr = stream->this_frame;
+
+    if (end - ptr < stream->skiplen) {
+      stream->skiplen   -= end - ptr;
+      stream->next_frame = end;
+
+      stream->error = MAD_ERROR_BUFLEN;
+      goto fail;
+    }
+
+    ptr += stream->skiplen;
+    stream->skiplen = 0;
+
+    stream->sync = 1;
+  }
+
+ sync:
+  /* synchronize */
+  if (stream->sync) {
+    if (end - ptr < MAD_BUFFER_GUARD) {
+      stream->next_frame = ptr;
+
+      stream->error = MAD_ERROR_BUFLEN;
+      goto fail;
+    }
+    else if (!(ptr[0] == 0xff && (ptr[1] & 0xe0) == 0xe0)) {
+      /* mark point where frame sync word was expected */
+      stream->this_frame = ptr;
+      stream->next_frame = ptr + 1;
+
+      stream->error = MAD_ERROR_LOSTSYNC;
+      goto fail;
+    }
+  }
+  else {
+    mad_bit_init(&stream->ptr, ptr);
+
+    if (mad_stream_sync(stream) == -1) {
+      if (end - stream->next_frame >= MAD_BUFFER_GUARD)
+	stream->next_frame = end - MAD_BUFFER_GUARD;
+
+      stream->error = MAD_ERROR_BUFLEN;
+      goto fail;
+    }
+
+    ptr = mad_bit_nextbyte(&stream->ptr);
+  }
+
+  /* begin processing */
+  stream->this_frame = ptr;
+  stream->next_frame = ptr + 1;  /* possibly bogus sync word */
+
+  mad_bit_init(&stream->ptr, stream->this_frame);
+
+  if (decode_header(header, stream) == -1)
+    goto fail;
+
+  /* calculate frame duration */
+  mad_timer_set(&header->duration, 0,
+		32 * MAD_NSBSAMPLES(header), header->samplerate);
+
+  /* calculate free bit rate */
+  if (header->bitrate == 0) {
+    if ((stream->freerate == 0 || !stream->sync ||
+	 (header->layer == MAD_LAYER_III && stream->freerate > 640000)) &&
+	free_bitrate(stream, header) == -1)
+      goto fail;
+
+    header->bitrate = stream->freerate;
+    header->flags  |= MAD_FLAG_FREEFORMAT;
+  }
+
+  /* calculate beginning of next frame */
+  pad_slot = (header->flags & MAD_FLAG_PADDING) ? 1 : 0;
+
+  if (header->layer == MAD_LAYER_I)
+    N = ((12 * header->bitrate / header->samplerate) + pad_slot) * 4;
+  else {
+    unsigned int slots_per_frame;
+
+    slots_per_frame = (header->layer == MAD_LAYER_III &&
+		       (header->flags & MAD_FLAG_LSF_EXT)) ? 72 : 144;
+
+    N = (slots_per_frame * header->bitrate / header->samplerate) + pad_slot;
+  }
+
+  /* verify there is enough data left in buffer to decode this frame */
+  if (N + MAD_BUFFER_GUARD > end - stream->this_frame) {
+    stream->next_frame = stream->this_frame;
+
+    stream->error = MAD_ERROR_BUFLEN;
+    goto fail;
+  }
+
+  stream->next_frame = stream->this_frame + N;
+
+  if (!stream->sync) {
+    /* check that a valid frame header follows this frame */
+
+    ptr = stream->next_frame;
+    if (!(ptr[0] == 0xff && (ptr[1] & 0xe0) == 0xe0)) {
+      ptr = stream->next_frame = stream->this_frame + 1;
+      goto sync;
+    }
+
+    stream->sync = 1;
+  }
+
+  header->flags |= MAD_FLAG_INCOMPLETE;
+
+  return 0;
+
+ fail:
+  stream->sync = 0;
+
+  return -1;
+}
+
+/*
+ * NAME:	frame->decode()
+ * DESCRIPTION:	decode a single frame from a bitstream
+ */
+int mad_frame_decode(struct mad_frame *frame, struct mad_stream *stream)
+{
+  frame->options = stream->options;
+
+  /* header() */
+  /* error_check() */
+
+  if (!(frame->header.flags & MAD_FLAG_INCOMPLETE) &&
+      mad_header_decode(&frame->header, stream) == -1)
+    goto fail;
+
+  /* audio_data() */
+
+  frame->header.flags &= ~MAD_FLAG_INCOMPLETE;
+
+  if (decoder_table[frame->header.layer - 1](stream, frame) == -1) {
+    if (!MAD_RECOVERABLE(stream->error))
+      stream->next_frame = stream->this_frame;
+
+    goto fail;
+  }
+
+  /* ancillary_data() */
+
+  if (frame->header.layer != MAD_LAYER_III) {
+    struct mad_bitptr next_frame;
+
+    mad_bit_init(&next_frame, stream->next_frame);
+
+    stream->anc_ptr    = stream->ptr;
+    stream->anc_bitlen = mad_bit_length(&stream->ptr, &next_frame);
+
+    mad_bit_finish(&next_frame);
+  }
+
+  return 0;
+
+ fail:
+  stream->anc_bitlen = 0;
+  return -1;
+}
+
+/*
+ * NAME:	frame->mute()
+ * DESCRIPTION:	zero all subband values so the frame becomes silent
+ */
+void mad_frame_mute(struct mad_frame *frame)
+{
+  unsigned int s, sb;
+
+  for (s = 0; s < 36; ++s) {
+    for (sb = 0; sb < 32; ++sb) {
+      frame->sbsample[0][s][sb] =
+      frame->sbsample[1][s][sb] = 0;
+    }
+  }
+
+  if (frame->overlap) {
+    for (s = 0; s < 18; ++s) {
+      for (sb = 0; sb < 32; ++sb) {
+	(*frame->overlap)[0][sb][s] =
+	(*frame->overlap)[1][sb][s] = 0;
+      }
+    }
+  }
+}

code/libmad-0.15.1b/frame.h

@@ -0,0 +1,118 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: frame.h,v 1.20 2004/01/23 09:41:32 rob Exp $
+ */
+
+# ifndef LIBMAD_FRAME_H
+# define LIBMAD_FRAME_H
+
+# include "fixed.h"
+# include "timer.h"
+# include "stream.h"
+
+enum mad_layer {
+  MAD_LAYER_I   = 1,			/* Layer I */
+  MAD_LAYER_II  = 2,			/* Layer II */
+  MAD_LAYER_III = 3			/* Layer III */
+};
+
+enum mad_mode {
+  MAD_MODE_SINGLE_CHANNEL = 0,		/* single channel */
+  MAD_MODE_DUAL_CHANNEL	  = 1,		/* dual channel */
+  MAD_MODE_JOINT_STEREO	  = 2,		/* joint (MS/intensity) stereo */
+  MAD_MODE_STEREO	  = 3		/* normal LR stereo */
+};
+
+enum mad_emphasis {
+  MAD_EMPHASIS_NONE	  = 0,		/* no emphasis */
+  MAD_EMPHASIS_50_15_US	  = 1,		/* 50/15 microseconds emphasis */
+  MAD_EMPHASIS_CCITT_J_17 = 3,		/* CCITT J.17 emphasis */
+  MAD_EMPHASIS_RESERVED   = 2		/* unknown emphasis */
+};
+
+struct mad_header {
+  enum mad_layer layer;			/* audio layer (1, 2, or 3) */
+  enum mad_mode mode;			/* channel mode (see above) */
+  int mode_extension;			/* additional mode info */
+  enum mad_emphasis emphasis;		/* de-emphasis to use (see above) */
+
+  unsigned long bitrate;		/* stream bitrate (bps) */
+  unsigned int samplerate;		/* sampling frequency (Hz) */
+
+  unsigned short crc_check;		/* frame CRC accumulator */
+  unsigned short crc_target;		/* final target CRC checksum */
+
+  int flags;				/* flags (see below) */
+  int private_bits;			/* private bits (see below) */
+
+  mad_timer_t duration;			/* audio playing time of frame */
+};
+
+struct mad_frame {
+  struct mad_header header;		/* MPEG audio header */
+
+  int options;				/* decoding options (from stream) */
+
+  mad_fixed_t sbsample[2][36][32];	/* synthesis subband filter samples */
+  mad_fixed_t (*overlap)[2][32][18];	/* Layer III block overlap data */
+};
+
+# define MAD_NCHANNELS(header)		((header)->mode ? 2 : 1)
+# define MAD_NSBSAMPLES(header)  \
+  ((header)->layer == MAD_LAYER_I ? 12 :  \
+   (((header)->layer == MAD_LAYER_III &&  \
+     ((header)->flags & MAD_FLAG_LSF_EXT)) ? 18 : 36))
+
+enum {
+  MAD_FLAG_NPRIVATE_III	= 0x0007,	/* number of Layer III private bits */
+  MAD_FLAG_INCOMPLETE	= 0x0008,	/* header but not data is decoded */
+
+  MAD_FLAG_PROTECTION	= 0x0010,	/* frame has CRC protection */
+  MAD_FLAG_COPYRIGHT	= 0x0020,	/* frame is copyright */
+  MAD_FLAG_ORIGINAL	= 0x0040,	/* frame is original (else copy) */
+  MAD_FLAG_PADDING	= 0x0080,	/* frame has additional slot */
+
+  MAD_FLAG_I_STEREO	= 0x0100,	/* uses intensity joint stereo */
+  MAD_FLAG_MS_STEREO	= 0x0200,	/* uses middle/side joint stereo */
+  MAD_FLAG_FREEFORMAT	= 0x0400,	/* uses free format bitrate */
+
+  MAD_FLAG_LSF_EXT	= 0x1000,	/* lower sampling freq. extension */
+  MAD_FLAG_MC_EXT	= 0x2000,	/* multichannel audio extension */
+  MAD_FLAG_MPEG_2_5_EXT	= 0x4000	/* MPEG 2.5 (unofficial) extension */
+};
+
+enum {
+  MAD_PRIVATE_HEADER	= 0x0100,	/* header private bit */
+  MAD_PRIVATE_III	= 0x001f	/* Layer III private bits (up to 5) */
+};
+
+void mad_header_init(struct mad_header *);
+
+# define mad_header_finish(header)  /* nothing */
+
+int mad_header_decode(struct mad_header *, struct mad_stream *);
+
+void mad_frame_init(struct mad_frame *);
+void mad_frame_finish(struct mad_frame *);
+
+int mad_frame_decode(struct mad_frame *, struct mad_stream *);
+
+void mad_frame_mute(struct mad_frame *);
+
+# endif

code/libmad-0.15.1b/global.h

@@ -0,0 +1,58 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: global.h,v 1.11 2004/01/23 09:41:32 rob Exp $
+ */
+
+# ifndef LIBMAD_GLOBAL_H
+# define LIBMAD_GLOBAL_H
+
+/* conditional debugging */
+
+# if defined(DEBUG) && defined(NDEBUG)
+#  error "cannot define both DEBUG and NDEBUG"
+# endif
+
+# if defined(DEBUG)
+#  include <stdio.h>
+# endif
+
+/* conditional features */
+
+# if defined(OPT_SPEED) && defined(OPT_ACCURACY)
+#  error "cannot optimize for both speed and accuracy"
+# endif
+
+# if defined(OPT_SPEED) && !defined(OPT_SSO)
+#  define OPT_SSO
+# endif
+
+# if defined(HAVE_UNISTD_H) && defined(HAVE_WAITPID) &&  \
+    defined(HAVE_FCNTL) && defined(HAVE_PIPE) && defined(HAVE_FORK)
+#  define USE_ASYNC
+# endif
+
+# if !defined(HAVE_ASSERT_H)
+#  if defined(NDEBUG)
+#   define assert(x)	/* nothing */
+#  else
+#   define assert(x)	do { if (!(x)) abort(); } while (0)
+#  endif
+# endif
+
+# endif

code/libmad-0.15.1b/huffman.h

@@ -0,0 +1,66 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: huffman.h,v 1.11 2004/01/23 09:41:32 rob Exp $
+ */
+
+# ifndef LIBMAD_HUFFMAN_H
+# define LIBMAD_HUFFMAN_H
+
+union huffquad {
+  struct {
+    unsigned short final  :  1;
+    unsigned short bits   :  3;
+    unsigned short offset : 12;
+  } ptr;
+  struct {
+    unsigned short final  :  1;
+    unsigned short hlen   :  3;
+    unsigned short v      :  1;
+    unsigned short w      :  1;
+    unsigned short x      :  1;
+    unsigned short y      :  1;
+  } value;
+  unsigned short final    :  1;
+};
+
+union huffpair {
+  struct {
+    unsigned short final  :  1;
+    unsigned short bits   :  3;
+    unsigned short offset : 12;
+  } ptr;
+  struct {
+    unsigned short final  :  1;
+    unsigned short hlen   :  3;
+    unsigned short x      :  4;
+    unsigned short y      :  4;
+  } value;
+  unsigned short final    :  1;
+};
+
+struct hufftable {
+  union huffpair const *table;
+  unsigned short linbits;
+  unsigned short startbits;
+};
+
+extern union huffquad const *const mad_huff_quad_table[2];
+extern struct hufftable const mad_huff_pair_table[32];
+
+# endif

code/libmad-0.15.1b/imdct_s.dat

@@ -0,0 +1,62 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: imdct_s.dat,v 1.8 2004/01/23 09:41:32 rob Exp $
+ */
+
+  /*  0 */  {  MAD_F(0x09bd7ca0) /*  0.608761429 */,
+	      -MAD_F(0x0ec835e8) /* -0.923879533 */,
+	      -MAD_F(0x0216a2a2) /* -0.130526192 */,
+	       MAD_F(0x0fdcf549) /*  0.991444861 */,
+	      -MAD_F(0x061f78aa) /* -0.382683432 */,
+	      -MAD_F(0x0cb19346) /* -0.793353340 */ },
+
+  /*  6 */  { -MAD_F(0x0cb19346) /* -0.793353340 */,
+	       MAD_F(0x061f78aa) /*  0.382683432 */,
+	       MAD_F(0x0fdcf549) /*  0.991444861 */,
+	       MAD_F(0x0216a2a2) /*  0.130526192 */,
+	      -MAD_F(0x0ec835e8) /* -0.923879533 */,
+	      -MAD_F(0x09bd7ca0) /* -0.608761429 */ },
+
+  /*  1 */  {  MAD_F(0x061f78aa) /*  0.382683432 */,
+	      -MAD_F(0x0ec835e8) /* -0.923879533 */,
+	       MAD_F(0x0ec835e8) /*  0.923879533 */,
+	      -MAD_F(0x061f78aa) /* -0.382683432 */,
+	      -MAD_F(0x061f78aa) /* -0.382683432 */,
+	       MAD_F(0x0ec835e8) /*  0.923879533 */ },
+
+  /*  7 */  { -MAD_F(0x0ec835e8) /* -0.923879533 */,
+	      -MAD_F(0x061f78aa) /* -0.382683432 */,
+	       MAD_F(0x061f78aa) /*  0.382683432 */,
+	       MAD_F(0x0ec835e8) /*  0.923879533 */,
+	       MAD_F(0x0ec835e8) /*  0.923879533 */,
+	       MAD_F(0x061f78aa) /*  0.382683432 */ },
+
+  /*  2 */  {  MAD_F(0x0216a2a2) /*  0.130526192 */,
+	      -MAD_F(0x061f78aa) /* -0.382683432 */,
+	       MAD_F(0x09bd7ca0) /*  0.608761429 */,
+	      -MAD_F(0x0cb19346) /* -0.793353340 */,
+	       MAD_F(0x0ec835e8) /*  0.923879533 */,
+	      -MAD_F(0x0fdcf549) /* -0.991444861 */ },
+
+  /*  8 */  { -MAD_F(0x0fdcf549) /* -0.991444861 */,
+	      -MAD_F(0x0ec835e8) /* -0.923879533 */,
+	      -MAD_F(0x0cb19346) /* -0.793353340 */,
+	      -MAD_F(0x09bd7ca0) /* -0.608761429 */,
+	      -MAD_F(0x061f78aa) /* -0.382683432 */,
+	      -MAD_F(0x0216a2a2) /* -0.130526192 */ }

code/libmad-0.15.1b/include/mad.h

@@ -0,0 +1,971 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * If you would like to negotiate alternate licensing terms, you may do
+ * so by contacting: Underbit Technologies, Inc. <info@underbit.com>
+ */
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+// ZTM: Use values from config.h instead of hardcoding FPM and SIZEOF for each platform
+# if 1
+
+# include "../config.h"
+
+# else
+# define FPM_INTEL
+
+
+
+# define SIZEOF_INT 4
+# define SIZEOF_LONG 4
+# define SIZEOF_LONG_LONG 8
+# endif
+
+
+/* Id: version.h,v 1.26 2004/01/23 09:41:33 rob Exp */
+
+# ifndef LIBMAD_VERSION_H
+# define LIBMAD_VERSION_H
+
+# define MAD_VERSION_MAJOR	0
+# define MAD_VERSION_MINOR	15
+# define MAD_VERSION_PATCH	1
+# define MAD_VERSION_EXTRA	" (beta)"
+
+# define MAD_VERSION_STRINGIZE(str)	#str
+# define MAD_VERSION_STRING(num)	MAD_VERSION_STRINGIZE(num)
+
+# define MAD_VERSION		MAD_VERSION_STRING(MAD_VERSION_MAJOR) "."  \
+				MAD_VERSION_STRING(MAD_VERSION_MINOR) "."  \
+				MAD_VERSION_STRING(MAD_VERSION_PATCH)  \
+				MAD_VERSION_EXTRA
+
+# define MAD_PUBLISHYEAR	"2000-2004"
+# define MAD_AUTHOR		"Underbit Technologies, Inc."
+# define MAD_EMAIL		"info@underbit.com"
+
+extern char const mad_version[];
+extern char const mad_copyright[];
+extern char const mad_author[];
+extern char const mad_build[];
+
+# endif
+
+/* Id: fixed.h,v 1.38 2004/02/17 02:02:03 rob Exp */
+
+# ifndef LIBMAD_FIXED_H
+# define LIBMAD_FIXED_H
+
+# if SIZEOF_INT >= 4
+typedef   signed int mad_fixed_t;
+
+typedef   signed int mad_fixed64hi_t;
+typedef unsigned int mad_fixed64lo_t;
+# else
+typedef   signed long mad_fixed_t;
+
+typedef   signed long mad_fixed64hi_t;
+typedef unsigned long mad_fixed64lo_t;
+# endif
+
+# if defined(_MSC_VER)
+#  define mad_fixed64_t  signed __int64
+# elif 1 || defined(__GNUC__)
+#  define mad_fixed64_t  signed long long
+# endif
+
+# if defined(FPM_FLOAT)
+typedef double mad_sample_t;
+# else
+typedef mad_fixed_t mad_sample_t;
+# endif
+
+/*
+ * Fixed-point format: 0xABBBBBBB
+ * A == whole part      (sign + 3 bits)
+ * B == fractional part (28 bits)
+ *
+ * Values are signed two's complement, so the effective range is:
+ * 0x80000000 to 0x7fffffff
+ *       -8.0 to +7.9999999962747097015380859375
+ *
+ * The smallest representable value is:
+ * 0x00000001 == 0.0000000037252902984619140625 (i.e. about 3.725e-9)
+ *
+ * 28 bits of fractional accuracy represent about
+ * 8.6 digits of decimal accuracy.
+ *
+ * Fixed-point numbers can be added or subtracted as normal
+ * integers, but multiplication requires shifting the 64-bit result
+ * from 56 fractional bits back to 28 (and rounding.)
+ *
+ * Changing the definition of MAD_F_FRACBITS is only partially
+ * supported, and must be done with care.
+ */
+
+# define MAD_F_FRACBITS		28
+
+# if MAD_F_FRACBITS == 28
+#  define MAD_F(x)		((mad_fixed_t) (x##L))
+# else
+#  if MAD_F_FRACBITS < 28
+#   warning "MAD_F_FRACBITS < 28"
+#   define MAD_F(x)		((mad_fixed_t)  \
+				 (((x##L) +  \
+				   (1L << (28 - MAD_F_FRACBITS - 1))) >>  \
+				  (28 - MAD_F_FRACBITS)))
+#  elif MAD_F_FRACBITS > 28
+#   error "MAD_F_FRACBITS > 28 not currently supported"
+#   define MAD_F(x)		((mad_fixed_t)  \
+				 ((x##L) << (MAD_F_FRACBITS - 28)))
+#  endif
+# endif
+
+# define MAD_F_MIN		((mad_fixed_t) -0x80000000L)
+# define MAD_F_MAX		((mad_fixed_t) +0x7fffffffL)
+
+# define MAD_F_ONE		MAD_F(0x10000000)
+
+# define mad_f_tofixed(x)	((mad_fixed_t)  \
+				 ((x) * (double) (1L << MAD_F_FRACBITS) + 0.5))
+# define mad_f_todouble(x)	((double)  \
+				 ((x) / (double) (1L << MAD_F_FRACBITS)))
+
+# define mad_f_intpart(x)	((x) >> MAD_F_FRACBITS)
+# define mad_f_fracpart(x)	((x) & ((1L << MAD_F_FRACBITS) - 1))
+				/* (x should be positive) */
+
+# define mad_f_fromint(x)	((x) << MAD_F_FRACBITS)
+
+# define mad_f_add(x, y)	((x) + (y))
+# define mad_f_sub(x, y)	((x) - (y))
+
+# if defined(FPM_FLOAT)
+#  error "FPM_FLOAT not yet supported"
+
+#  undef MAD_F
+#  define MAD_F(x)		mad_f_todouble(x)
+
+#  define mad_f_mul(x, y)	((x) * (y))
+#  define mad_f_scale64
+
+#  undef ASO_ZEROCHECK
+
+# elif defined(FPM_64BIT)
+
+/*
+ * This version should be the most accurate if 64-bit types are supported by
+ * the compiler, although it may not be the most efficient.
+ */
+#  if defined(OPT_ACCURACY)
+#   define mad_f_mul(x, y)  \
+    ((mad_fixed_t)  \
+     ((((mad_fixed64_t) (x) * (y)) +  \
+       (1L << (MAD_F_SCALEBITS - 1))) >> MAD_F_SCALEBITS))
+#  else
+#   define mad_f_mul(x, y)  \
+    ((mad_fixed_t) (((mad_fixed64_t) (x) * (y)) >> MAD_F_SCALEBITS))
+#  endif
+
+#  define MAD_F_SCALEBITS  MAD_F_FRACBITS
+
+/* --- Intel --------------------------------------------------------------- */
+
+# elif defined(FPM_INTEL)
+
+#  if defined(_MSC_VER)
+#   pragma warning(push)
+#   pragma warning(disable: 4035)  /* no return value */
+static __forceinline
+mad_fixed_t mad_f_mul_inline(mad_fixed_t x, mad_fixed_t y)
+{
+  enum {
+    fracbits = MAD_F_FRACBITS
+  };
+
+  __asm {
+    mov eax, x
+    imul y
+    shrd eax, edx, fracbits
+  }
+
+  /* implicit return of eax */
+}
+#   pragma warning(pop)
+
+#   define mad_f_mul		mad_f_mul_inline
+#   define mad_f_scale64
+#  else
+/*
+ * This Intel version is fast and accurate; the disposition of the least
+ * significant bit depends on OPT_ACCURACY via mad_f_scale64().
+ */
+#   define MAD_F_MLX(hi, lo, x, y)  \
+    asm ("imull %3"  \
+	 : "=a" (lo), "=d" (hi)  \
+	 : "%a" (x), "rm" (y)  \
+	 : "cc")
+
+#   if defined(OPT_ACCURACY)
+/*
+ * This gives best accuracy but is not very fast.
+ */
+#    define MAD_F_MLA(hi, lo, x, y)  \
+    ({ mad_fixed64hi_t __hi;  \
+       mad_fixed64lo_t __lo;  \
+       MAD_F_MLX(__hi, __lo, (x), (y));  \
+       asm ("addl %2,%0\n\t"  \
+	    "adcl %3,%1"  \
+	    : "=rm" (lo), "=rm" (hi)  \
+	    : "r" (__lo), "r" (__hi), "0" (lo), "1" (hi)  \
+	    : "cc");  \
+    })
+#   endif  /* OPT_ACCURACY */
+
+#   if defined(OPT_ACCURACY)
+/*
+ * Surprisingly, this is faster than SHRD followed by ADC.
+ */
+#    define mad_f_scale64(hi, lo)  \
+    ({ mad_fixed64hi_t __hi_;  \
+       mad_fixed64lo_t __lo_;  \
+       mad_fixed_t __result;  \
+       asm ("addl %4,%2\n\t"  \
+	    "adcl %5,%3"  \
+	    : "=rm" (__lo_), "=rm" (__hi_)  \
+	    : "0" (lo), "1" (hi),  \
+	      "ir" (1L << (MAD_F_SCALEBITS - 1)), "ir" (0)  \
+	    : "cc");  \
+       asm ("shrdl %3,%2,%1"  \
+	    : "=rm" (__result)  \
+	    : "0" (__lo_), "r" (__hi_), "I" (MAD_F_SCALEBITS)  \
+	    : "cc");  \
+       __result;  \
+    })
+#   elif defined(OPT_INTEL)
+/*
+ * Alternate Intel scaling that may or may not perform better.
+ */
+#    define mad_f_scale64(hi, lo)  \
+    ({ mad_fixed_t __result;  \
+       asm ("shrl %3,%1\n\t"  \
+	    "shll %4,%2\n\t"  \
+	    "orl %2,%1"  \
+	    : "=rm" (__result)  \
+	    : "0" (lo), "r" (hi),  \
+	      "I" (MAD_F_SCALEBITS), "I" (32 - MAD_F_SCALEBITS)  \
+	    : "cc");  \
+       __result;  \
+    })
+#   else
+#    define mad_f_scale64(hi, lo)  \
+    ({ mad_fixed_t __result;  \
+       asm ("shrdl %3,%2,%1"  \
+	    : "=rm" (__result)  \
+	    : "0" (lo), "r" (hi), "I" (MAD_F_SCALEBITS)  \
+	    : "cc");  \
+       __result;  \
+    })
+#   endif  /* OPT_ACCURACY */
+
+#   define MAD_F_SCALEBITS  MAD_F_FRACBITS
+#  endif
+
+/* --- ARM ----------------------------------------------------------------- */
+
+# elif defined(FPM_ARM)
+
+/* 
+ * This ARM V4 version is as accurate as FPM_64BIT but much faster. The
+ * least significant bit is properly rounded at no CPU cycle cost!
+ */
+# if 1
+/*
+ * This is faster than the default implementation via MAD_F_MLX() and
+ * mad_f_scale64().
+ */
+#  define mad_f_mul(x, y)  \
+    ({ mad_fixed64hi_t __hi;  \
+       mad_fixed64lo_t __lo;  \
+       mad_fixed_t __result;  \
+       asm ("smull	%0, %1, %3, %4\n\t"  \
+	    "movs	%0, %0, lsr %5\n\t"  \
+	    "adc	%2, %0, %1, lsl %6"  \
+	    : "=&r" (__lo), "=&r" (__hi), "=r" (__result)  \
+	    : "%r" (x), "r" (y),  \
+	      "M" (MAD_F_SCALEBITS), "M" (32 - MAD_F_SCALEBITS)  \
+	    : "cc");  \
+       __result;  \
+    })
+# endif
+
+#  define MAD_F_MLX(hi, lo, x, y)  \
+    asm ("smull	%0, %1, %2, %3"  \
+	 : "=&r" (lo), "=&r" (hi)  \
+	 : "%r" (x), "r" (y))
+
+#  define MAD_F_MLA(hi, lo, x, y)  \
+    asm ("smlal	%0, %1, %2, %3"  \
+	 : "+r" (lo), "+r" (hi)  \
+	 : "%r" (x), "r" (y))
+
+#  define MAD_F_MLN(hi, lo)  \
+    asm ("rsbs	%0, %2, #0\n\t"  \
+	 "rsc	%1, %3, #0"  \
+	 : "=r" (lo), "=r" (hi)  \
+	 : "0" (lo), "1" (hi)  \
+	 : "cc")
+
+#  define mad_f_scale64(hi, lo)  \
+    ({ mad_fixed_t __result;  \
+       asm ("movs	%0, %1, lsr %3\n\t"  \
+	    "adc	%0, %0, %2, lsl %4"  \
+	    : "=&r" (__result)  \
+	    : "r" (lo), "r" (hi),  \
+	      "M" (MAD_F_SCALEBITS), "M" (32 - MAD_F_SCALEBITS)  \
+	    : "cc");  \
+       __result;  \
+    })
+
+#  define MAD_F_SCALEBITS  MAD_F_FRACBITS
+
+/* --- MIPS ---------------------------------------------------------------- */
+
+# elif defined(FPM_MIPS)
+
+/*
+ * This MIPS version is fast and accurate; the disposition of the least
+ * significant bit depends on OPT_ACCURACY via mad_f_scale64().
+ */
+#  define MAD_F_MLX(hi, lo, x, y)  \
+    asm ("mult	%2,%3"  \
+	 : "=l" (lo), "=h" (hi)  \
+	 : "%r" (x), "r" (y))
+
+# if defined(HAVE_MADD_ASM)
+#  define MAD_F_MLA(hi, lo, x, y)  \
+    asm ("madd	%2,%3"  \
+	 : "+l" (lo), "+h" (hi)  \
+	 : "%r" (x), "r" (y))
+# elif defined(HAVE_MADD16_ASM)
+/*
+ * This loses significant accuracy due to the 16-bit integer limit in the
+ * multiply/accumulate instruction.
+ */
+#  define MAD_F_ML0(hi, lo, x, y)  \
+    asm ("mult	%2,%3"  \
+	 : "=l" (lo), "=h" (hi)  \
+	 : "%r" ((x) >> 12), "r" ((y) >> 16))
+#  define MAD_F_MLA(hi, lo, x, y)  \
+    asm ("madd16	%2,%3"  \
+	 : "+l" (lo), "+h" (hi)  \
+	 : "%r" ((x) >> 12), "r" ((y) >> 16))
+#  define MAD_F_MLZ(hi, lo)  ((mad_fixed_t) (lo))
+# endif
+
+# if defined(OPT_SPEED)
+#  define mad_f_scale64(hi, lo)  \
+    ((mad_fixed_t) ((hi) << (32 - MAD_F_SCALEBITS)))
+#  define MAD_F_SCALEBITS  MAD_F_FRACBITS
+# endif
+
+/* --- SPARC --------------------------------------------------------------- */
+
+# elif defined(FPM_SPARC)
+
+/*
+ * This SPARC V8 version is fast and accurate; the disposition of the least
+ * significant bit depends on OPT_ACCURACY via mad_f_scale64().
+ */
+#  define MAD_F_MLX(hi, lo, x, y)  \
+    asm ("smul %2, %3, %0\n\t"  \
+	 "rd %%y, %1"  \
+	 : "=r" (lo), "=r" (hi)  \
+	 : "%r" (x), "rI" (y))
+
+/* --- PowerPC ------------------------------------------------------------- */
+
+# elif defined(FPM_PPC)
+
+/*
+ * This PowerPC version is fast and accurate; the disposition of the least
+ * significant bit depends on OPT_ACCURACY via mad_f_scale64().
+ */
+#  define MAD_F_MLX(hi, lo, x, y)  \
+    do {  \
+      asm ("mullw %0,%1,%2"  \
+	   : "=r" (lo)  \
+	   : "%r" (x), "r" (y));  \
+      asm ("mulhw %0,%1,%2"  \
+	   : "=r" (hi)  \
+	   : "%r" (x), "r" (y));  \
+    }  \
+    while (0)
+
+#  if defined(OPT_ACCURACY)
+/*
+ * This gives best accuracy but is not very fast.
+ */
+#   define MAD_F_MLA(hi, lo, x, y)  \
+    ({ mad_fixed64hi_t __hi;  \
+       mad_fixed64lo_t __lo;  \
+       MAD_F_MLX(__hi, __lo, (x), (y));  \
+       asm ("addc %0,%2,%3\n\t"  \
+	    "adde %1,%4,%5"  \
+	    : "=r" (lo), "=r" (hi)  \
+	    : "%r" (lo), "r" (__lo),  \
+	      "%r" (hi), "r" (__hi)  \
+	    : "xer");  \
+    })
+#  endif
+
+#  if defined(OPT_ACCURACY)
+/*
+ * This is slower than the truncating version below it.
+ */
+#   define mad_f_scale64(hi, lo)  \
+    ({ mad_fixed_t __result, __round;  \
+       asm ("rotrwi %0,%1,%2"  \
+	    : "=r" (__result)  \
+	    : "r" (lo), "i" (MAD_F_SCALEBITS));  \
+       asm ("extrwi %0,%1,1,0"  \
+	    : "=r" (__round)  \
+	    : "r" (__result));  \
+       asm ("insrwi %0,%1,%2,0"  \
+	    : "+r" (__result)  \
+	    : "r" (hi), "i" (MAD_F_SCALEBITS));  \
+       asm ("add %0,%1,%2"  \
+	    : "=r" (__result)  \
+	    : "%r" (__result), "r" (__round));  \
+       __result;  \
+    })
+#  else
+#   define mad_f_scale64(hi, lo)  \
+    ({ mad_fixed_t __result;  \
+       asm ("rotrwi %0,%1,%2"  \
+	    : "=r" (__result)  \
+	    : "r" (lo), "i" (MAD_F_SCALEBITS));  \
+       asm ("insrwi %0,%1,%2,0"  \
+	    : "+r" (__result)  \
+	    : "r" (hi), "i" (MAD_F_SCALEBITS));  \
+       __result;  \
+    })
+#  endif
+
+#  define MAD_F_SCALEBITS  MAD_F_FRACBITS
+
+/* --- Default ------------------------------------------------------------- */
+
+# elif defined(FPM_DEFAULT)
+
+/*
+ * This version is the most portable but it loses significant accuracy.
+ * Furthermore, accuracy is biased against the second argument, so care
+ * should be taken when ordering operands.
+ *
+ * The scale factors are constant as this is not used with SSO.
+ *
+ * Pre-rounding is required to stay within the limits of compliance.
+ */
+#  if defined(OPT_SPEED)
+#   define mad_f_mul(x, y)	(((x) >> 12) * ((y) >> 16))
+#  else
+#   define mad_f_mul(x, y)	((((x) + (1L << 11)) >> 12) *  \
+				 (((y) + (1L << 15)) >> 16))
+#  endif
+
+/* ------------------------------------------------------------------------- */
+
+# else
+#  error "no FPM selected"
+# endif
+
+/* default implementations */
+
+# if !defined(mad_f_mul)
+#  define mad_f_mul(x, y)  \
+    ({ register mad_fixed64hi_t __hi;  \
+       register mad_fixed64lo_t __lo;  \
+       MAD_F_MLX(__hi, __lo, (x), (y));  \
+       mad_f_scale64(__hi, __lo);  \
+    })
+# endif
+
+# if !defined(MAD_F_MLA)
+#  define MAD_F_ML0(hi, lo, x, y)	((lo)  = mad_f_mul((x), (y)))
+#  define MAD_F_MLA(hi, lo, x, y)	((lo) += mad_f_mul((x), (y)))
+#  define MAD_F_MLN(hi, lo)		((lo)  = -(lo))
+#  define MAD_F_MLZ(hi, lo)		((void) (hi), (mad_fixed_t) (lo))
+# endif
+
+# if !defined(MAD_F_ML0)
+#  define MAD_F_ML0(hi, lo, x, y)	MAD_F_MLX((hi), (lo), (x), (y))
+# endif
+
+# if !defined(MAD_F_MLN)
+#  define MAD_F_MLN(hi, lo)		((hi) = ((lo) = -(lo)) ? ~(hi) : -(hi))
+# endif
+
+# if !defined(MAD_F_MLZ)
+#  define MAD_F_MLZ(hi, lo)		mad_f_scale64((hi), (lo))
+# endif
+
+# if !defined(mad_f_scale64)
+#  if defined(OPT_ACCURACY)
+#   define mad_f_scale64(hi, lo)  \
+    ((((mad_fixed_t)  \
+       (((hi) << (32 - (MAD_F_SCALEBITS - 1))) |  \
+	((lo) >> (MAD_F_SCALEBITS - 1)))) + 1) >> 1)
+#  else
+#   define mad_f_scale64(hi, lo)  \
+    ((mad_fixed_t)  \
+     (((hi) << (32 - MAD_F_SCALEBITS)) |  \
+      ((lo) >> MAD_F_SCALEBITS)))
+#  endif
+#  define MAD_F_SCALEBITS  MAD_F_FRACBITS
+# endif
+
+/* C routines */
+
+mad_fixed_t mad_f_abs(mad_fixed_t);
+mad_fixed_t mad_f_div(mad_fixed_t, mad_fixed_t);
+
+# endif
+
+/* Id: bit.h,v 1.12 2004/01/23 09:41:32 rob Exp */
+
+# ifndef LIBMAD_BIT_H
+# define LIBMAD_BIT_H
+
+struct mad_bitptr {
+  unsigned char const *byte;
+  unsigned short cache;
+  unsigned short left;
+};
+
+void mad_bit_init(struct mad_bitptr *, unsigned char const *);
+
+# define mad_bit_finish(bitptr)		/* nothing */
+
+unsigned int mad_bit_length(struct mad_bitptr const *,
+			    struct mad_bitptr const *);
+
+# define mad_bit_bitsleft(bitptr)  ((bitptr)->left)
+unsigned char const *mad_bit_nextbyte(struct mad_bitptr const *);
+
+void mad_bit_skip(struct mad_bitptr *, unsigned int);
+unsigned long mad_bit_read(struct mad_bitptr *, unsigned int);
+void mad_bit_write(struct mad_bitptr *, unsigned int, unsigned long);
+
+unsigned short mad_bit_crc(struct mad_bitptr, unsigned int, unsigned short);
+
+# endif
+
+/* Id: timer.h,v 1.16 2004/01/23 09:41:33 rob Exp */
+
+# ifndef LIBMAD_TIMER_H
+# define LIBMAD_TIMER_H
+
+typedef struct {
+  signed long seconds;		/* whole seconds */
+  unsigned long fraction;	/* 1/MAD_TIMER_RESOLUTION seconds */
+} mad_timer_t;
+
+extern mad_timer_t const mad_timer_zero;
+
+# define MAD_TIMER_RESOLUTION	352800000UL
+
+enum mad_units {
+  MAD_UNITS_HOURS	 =    -2,
+  MAD_UNITS_MINUTES	 =    -1,
+  MAD_UNITS_SECONDS	 =     0,
+
+  /* metric units */
+
+  MAD_UNITS_DECISECONDS	 =    10,
+  MAD_UNITS_CENTISECONDS =   100,
+  MAD_UNITS_MILLISECONDS =  1000,
+
+  /* audio sample units */
+
+  MAD_UNITS_8000_HZ	 =  8000,
+  MAD_UNITS_11025_HZ	 = 11025,
+  MAD_UNITS_12000_HZ	 = 12000,
+
+  MAD_UNITS_16000_HZ	 = 16000,
+  MAD_UNITS_22050_HZ	 = 22050,
+  MAD_UNITS_24000_HZ	 = 24000,
+
+  MAD_UNITS_32000_HZ	 = 32000,
+  MAD_UNITS_44100_HZ	 = 44100,
+  MAD_UNITS_48000_HZ	 = 48000,
+
+  /* video frame/field units */
+
+  MAD_UNITS_24_FPS	 =    24,
+  MAD_UNITS_25_FPS	 =    25,
+  MAD_UNITS_30_FPS	 =    30,
+  MAD_UNITS_48_FPS	 =    48,
+  MAD_UNITS_50_FPS	 =    50,
+  MAD_UNITS_60_FPS	 =    60,
+
+  /* CD audio frames */
+
+  MAD_UNITS_75_FPS	 =    75,
+
+  /* video drop-frame units */
+
+  MAD_UNITS_23_976_FPS	 =   -24,
+  MAD_UNITS_24_975_FPS	 =   -25,
+  MAD_UNITS_29_97_FPS	 =   -30,
+  MAD_UNITS_47_952_FPS	 =   -48,
+  MAD_UNITS_49_95_FPS	 =   -50,
+  MAD_UNITS_59_94_FPS	 =   -60
+};
+
+# define mad_timer_reset(timer)	((void) (*(timer) = mad_timer_zero))
+
+int mad_timer_compare(mad_timer_t, mad_timer_t);
+
+# define mad_timer_sign(timer)	mad_timer_compare((timer), mad_timer_zero)
+
+void mad_timer_negate(mad_timer_t *);
+mad_timer_t mad_timer_abs(mad_timer_t);
+
+void mad_timer_set(mad_timer_t *, unsigned long, unsigned long, unsigned long);
+void mad_timer_add(mad_timer_t *, mad_timer_t);
+void mad_timer_multiply(mad_timer_t *, signed long);
+
+signed long mad_timer_count(mad_timer_t, enum mad_units);
+unsigned long mad_timer_fraction(mad_timer_t, unsigned long);
+void mad_timer_string(mad_timer_t, char *, char const *,
+		      enum mad_units, enum mad_units, unsigned long);
+
+# endif
+
+/* Id: stream.h,v 1.20 2004/02/05 09:02:39 rob Exp */
+
+# ifndef LIBMAD_STREAM_H
+# define LIBMAD_STREAM_H
+
+
+# define MAD_BUFFER_GUARD	8
+# define MAD_BUFFER_MDLEN	(511 + 2048 + MAD_BUFFER_GUARD)
+
+enum mad_error {
+  MAD_ERROR_NONE	   = 0x0000,	/* no error */
+
+  MAD_ERROR_BUFLEN	   = 0x0001,	/* input buffer too small (or EOF) */
+  MAD_ERROR_BUFPTR	   = 0x0002,	/* invalid (null) buffer pointer */
+
+  MAD_ERROR_NOMEM	   = 0x0031,	/* not enough memory */
+
+  MAD_ERROR_LOSTSYNC	   = 0x0101,	/* lost synchronization */
+  MAD_ERROR_BADLAYER	   = 0x0102,	/* reserved header layer value */
+  MAD_ERROR_BADBITRATE	   = 0x0103,	/* forbidden bitrate value */
+  MAD_ERROR_BADSAMPLERATE  = 0x0104,	/* reserved sample frequency value */
+  MAD_ERROR_BADEMPHASIS	   = 0x0105,	/* reserved emphasis value */
+
+  MAD_ERROR_BADCRC	   = 0x0201,	/* CRC check failed */
+  MAD_ERROR_BADBITALLOC	   = 0x0211,	/* forbidden bit allocation value */
+  MAD_ERROR_BADSCALEFACTOR = 0x0221,	/* bad scalefactor index */
+  MAD_ERROR_BADMODE        = 0x0222,	/* bad bitrate/mode combination */
+  MAD_ERROR_BADFRAMELEN	   = 0x0231,	/* bad frame length */
+  MAD_ERROR_BADBIGVALUES   = 0x0232,	/* bad big_values count */
+  MAD_ERROR_BADBLOCKTYPE   = 0x0233,	/* reserved block_type */
+  MAD_ERROR_BADSCFSI	   = 0x0234,	/* bad scalefactor selection info */
+  MAD_ERROR_BADDATAPTR	   = 0x0235,	/* bad main_data_begin pointer */
+  MAD_ERROR_BADPART3LEN	   = 0x0236,	/* bad audio data length */
+  MAD_ERROR_BADHUFFTABLE   = 0x0237,	/* bad Huffman table select */
+  MAD_ERROR_BADHUFFDATA	   = 0x0238,	/* Huffman data overrun */
+  MAD_ERROR_BADSTEREO	   = 0x0239	/* incompatible block_type for JS */
+};
+
+# define MAD_RECOVERABLE(error)	((error) & 0xff00)
+
+struct mad_stream {
+  unsigned char const *buffer;		/* input bitstream buffer */
+  unsigned char const *bufend;		/* end of buffer */
+  unsigned long skiplen;		/* bytes to skip before next frame */
+
+  int sync;				/* stream sync found */
+  unsigned long freerate;		/* free bitrate (fixed) */
+
+  unsigned char const *this_frame;	/* start of current frame */
+  unsigned char const *next_frame;	/* start of next frame */
+  struct mad_bitptr ptr;		/* current processing bit pointer */
+
+  struct mad_bitptr anc_ptr;		/* ancillary bits pointer */
+  unsigned int anc_bitlen;		/* number of ancillary bits */
+
+  unsigned char (*main_data)[MAD_BUFFER_MDLEN];
+					/* Layer III main_data() */
+  unsigned int md_len;			/* bytes in main_data */
+
+  int options;				/* decoding options (see below) */
+  enum mad_error error;			/* error code (see above) */
+};
+
+enum {
+  MAD_OPTION_IGNORECRC      = 0x0001,	/* ignore CRC errors */
+  MAD_OPTION_HALFSAMPLERATE = 0x0002	/* generate PCM at 1/2 sample rate */
+# if 0  /* not yet implemented */
+  MAD_OPTION_LEFTCHANNEL    = 0x0010,	/* decode left channel only */
+  MAD_OPTION_RIGHTCHANNEL   = 0x0020,	/* decode right channel only */
+  MAD_OPTION_SINGLECHANNEL  = 0x0030	/* combine channels */
+# endif
+};
+
+void mad_stream_init(struct mad_stream *);
+void mad_stream_finish(struct mad_stream *);
+
+# define mad_stream_options(stream, opts)  \
+    ((void) ((stream)->options = (opts)))
+
+void mad_stream_buffer(struct mad_stream *,
+		       unsigned char const *, unsigned long);
+void mad_stream_skip(struct mad_stream *, unsigned long);
+
+int mad_stream_sync(struct mad_stream *);
+
+char const *mad_stream_errorstr(struct mad_stream const *);
+
+# endif
+
+/* Id: frame.h,v 1.20 2004/01/23 09:41:32 rob Exp */
+
+# ifndef LIBMAD_FRAME_H
+# define LIBMAD_FRAME_H
+
+
+enum mad_layer {
+  MAD_LAYER_I   = 1,			/* Layer I */
+  MAD_LAYER_II  = 2,			/* Layer II */
+  MAD_LAYER_III = 3			/* Layer III */
+};
+
+enum mad_mode {
+  MAD_MODE_SINGLE_CHANNEL = 0,		/* single channel */
+  MAD_MODE_DUAL_CHANNEL	  = 1,		/* dual channel */
+  MAD_MODE_JOINT_STEREO	  = 2,		/* joint (MS/intensity) stereo */
+  MAD_MODE_STEREO	  = 3		/* normal LR stereo */
+};
+
+enum mad_emphasis {
+  MAD_EMPHASIS_NONE	  = 0,		/* no emphasis */
+  MAD_EMPHASIS_50_15_US	  = 1,		/* 50/15 microseconds emphasis */
+  MAD_EMPHASIS_CCITT_J_17 = 3,		/* CCITT J.17 emphasis */
+  MAD_EMPHASIS_RESERVED   = 2		/* unknown emphasis */
+};
+
+struct mad_header {
+  enum mad_layer layer;			/* audio layer (1, 2, or 3) */
+  enum mad_mode mode;			/* channel mode (see above) */
+  int mode_extension;			/* additional mode info */
+  enum mad_emphasis emphasis;		/* de-emphasis to use (see above) */
+
+  unsigned long bitrate;		/* stream bitrate (bps) */
+  unsigned int samplerate;		/* sampling frequency (Hz) */
+
+  unsigned short crc_check;		/* frame CRC accumulator */
+  unsigned short crc_target;		/* final target CRC checksum */
+
+  int flags;				/* flags (see below) */
+  int private_bits;			/* private bits (see below) */
+
+  mad_timer_t duration;			/* audio playing time of frame */
+};
+
+struct mad_frame {
+  struct mad_header header;		/* MPEG audio header */
+
+  int options;				/* decoding options (from stream) */
+
+  mad_fixed_t sbsample[2][36][32];	/* synthesis subband filter samples */
+  mad_fixed_t (*overlap)[2][32][18];	/* Layer III block overlap data */
+};
+
+# define MAD_NCHANNELS(header)		((header)->mode ? 2 : 1)
+# define MAD_NSBSAMPLES(header)  \
+  ((header)->layer == MAD_LAYER_I ? 12 :  \
+   (((header)->layer == MAD_LAYER_III &&  \
+     ((header)->flags & MAD_FLAG_LSF_EXT)) ? 18 : 36))
+
+enum {
+  MAD_FLAG_NPRIVATE_III	= 0x0007,	/* number of Layer III private bits */
+  MAD_FLAG_INCOMPLETE	= 0x0008,	/* header but not data is decoded */
+
+  MAD_FLAG_PROTECTION	= 0x0010,	/* frame has CRC protection */
+  MAD_FLAG_COPYRIGHT	= 0x0020,	/* frame is copyright */
+  MAD_FLAG_ORIGINAL	= 0x0040,	/* frame is original (else copy) */
+  MAD_FLAG_PADDING	= 0x0080,	/* frame has additional slot */
+
+  MAD_FLAG_I_STEREO	= 0x0100,	/* uses intensity joint stereo */
+  MAD_FLAG_MS_STEREO	= 0x0200,	/* uses middle/side joint stereo */
+  MAD_FLAG_FREEFORMAT	= 0x0400,	/* uses free format bitrate */
+
+  MAD_FLAG_LSF_EXT	= 0x1000,	/* lower sampling freq. extension */
+  MAD_FLAG_MC_EXT	= 0x2000,	/* multichannel audio extension */
+  MAD_FLAG_MPEG_2_5_EXT	= 0x4000	/* MPEG 2.5 (unofficial) extension */
+};
+
+enum {
+  MAD_PRIVATE_HEADER	= 0x0100,	/* header private bit */
+  MAD_PRIVATE_III	= 0x001f	/* Layer III private bits (up to 5) */
+};
+
+void mad_header_init(struct mad_header *);
+
+# define mad_header_finish(header)  /* nothing */
+
+int mad_header_decode(struct mad_header *, struct mad_stream *);
+
+void mad_frame_init(struct mad_frame *);
+void mad_frame_finish(struct mad_frame *);
+
+int mad_frame_decode(struct mad_frame *, struct mad_stream *);
+
+void mad_frame_mute(struct mad_frame *);
+
+# endif
+
+/* Id: synth.h,v 1.15 2004/01/23 09:41:33 rob Exp */
+
+# ifndef LIBMAD_SYNTH_H
+# define LIBMAD_SYNTH_H
+
+
+struct mad_pcm {
+  unsigned int samplerate;		/* sampling frequency (Hz) */
+  unsigned short channels;		/* number of channels */
+  unsigned short length;		/* number of samples per channel */
+  mad_fixed_t samples[2][1152];		/* PCM output samples [ch][sample] */
+};
+
+struct mad_synth {
+  mad_fixed_t filter[2][2][2][16][8];	/* polyphase filterbank outputs */
+  					/* [ch][eo][peo][s][v] */
+
+  unsigned int phase;			/* current processing phase */
+
+  struct mad_pcm pcm;			/* PCM output */
+};
+
+/* single channel PCM selector */
+enum {
+  MAD_PCM_CHANNEL_SINGLE = 0
+};
+
+/* dual channel PCM selector */
+enum {
+  MAD_PCM_CHANNEL_DUAL_1 = 0,
+  MAD_PCM_CHANNEL_DUAL_2 = 1
+};
+
+/* stereo PCM selector */
+enum {
+  MAD_PCM_CHANNEL_STEREO_LEFT  = 0,
+  MAD_PCM_CHANNEL_STEREO_RIGHT = 1
+};
+
+void mad_synth_init(struct mad_synth *);
+
+# define mad_synth_finish(synth)  /* nothing */
+
+void mad_synth_mute(struct mad_synth *);
+
+void mad_synth_frame(struct mad_synth *, struct mad_frame const *);
+
+# endif
+
+/* Id: decoder.h,v 1.17 2004/01/23 09:41:32 rob Exp */
+
+# ifndef LIBMAD_DECODER_H
+# define LIBMAD_DECODER_H
+
+
+enum mad_decoder_mode {
+  MAD_DECODER_MODE_SYNC  = 0,
+  MAD_DECODER_MODE_ASYNC
+};
+
+enum mad_flow {
+  MAD_FLOW_CONTINUE = 0x0000,	/* continue normally */
+  MAD_FLOW_STOP     = 0x0010,	/* stop decoding normally */
+  MAD_FLOW_BREAK    = 0x0011,	/* stop decoding and signal an error */
+  MAD_FLOW_IGNORE   = 0x0020	/* ignore the current frame */
+};
+
+struct mad_decoder {
+  enum mad_decoder_mode mode;
+
+  int options;
+
+  struct {
+    long pid;
+    int in;
+    int out;
+  } async;
+
+  struct {
+    struct mad_stream stream;
+    struct mad_frame frame;
+    struct mad_synth synth;
+  } *sync;
+
+  void *cb_data;
+
+  enum mad_flow (*input_func)(void *, struct mad_stream *);
+  enum mad_flow (*header_func)(void *, struct mad_header const *);
+  enum mad_flow (*filter_func)(void *,
+			       struct mad_stream const *, struct mad_frame *);
+  enum mad_flow (*output_func)(void *,
+			       struct mad_header const *, struct mad_pcm *);
+  enum mad_flow (*error_func)(void *, struct mad_stream *, struct mad_frame *);
+  enum mad_flow (*message_func)(void *, void *, unsigned int *);
+};
+
+void mad_decoder_init(struct mad_decoder *, void *,
+		      enum mad_flow (*)(void *, struct mad_stream *),
+		      enum mad_flow (*)(void *, struct mad_header const *),
+		      enum mad_flow (*)(void *,
+					struct mad_stream const *,
+					struct mad_frame *),
+		      enum mad_flow (*)(void *,
+					struct mad_header const *,
+					struct mad_pcm *),
+		      enum mad_flow (*)(void *,
+					struct mad_stream *,
+					struct mad_frame *),
+		      enum mad_flow (*)(void *, void *, unsigned int *));
+int mad_decoder_finish(struct mad_decoder *);
+
+# define mad_decoder_options(decoder, opts)  \
+    ((void) ((decoder)->options = (opts)))
+
+int mad_decoder_run(struct mad_decoder *, enum mad_decoder_mode);
+int mad_decoder_message(struct mad_decoder *, void *, unsigned int *);
+
+# endif
+
+# ifdef __cplusplus
+}
+# endif

code/libmad-0.15.1b/layer12.c

@@ -0,0 +1,534 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: layer12.c,v 1.17 2004/02/05 09:02:39 rob Exp $
+ */
+
+# if 1 //ifdef HAVE_CONFIG_H
+#  include "config.h"
+# endif
+
+# include "global.h"
+
+# ifdef HAVE_LIMITS_H
+#  include <limits.h>
+# else
+#  define CHAR_BIT  8
+# endif
+
+# include "fixed.h"
+# include "bit.h"
+# include "stream.h"
+# include "frame.h"
+# include "layer12.h"
+
+/*
+ * scalefactor table
+ * used in both Layer I and Layer II decoding
+ */
+static
+mad_fixed_t const sf_table[64] = {
+# include "sf_table.dat"
+};
+
+/* --- Layer I ------------------------------------------------------------- */
+
+/* linear scaling table */
+static
+mad_fixed_t const linear_table[14] = {
+  MAD_F(0x15555555),  /* 2^2  / (2^2  - 1) == 1.33333333333333 */
+  MAD_F(0x12492492),  /* 2^3  / (2^3  - 1) == 1.14285714285714 */
+  MAD_F(0x11111111),  /* 2^4  / (2^4  - 1) == 1.06666666666667 */
+  MAD_F(0x10842108),  /* 2^5  / (2^5  - 1) == 1.03225806451613 */
+  MAD_F(0x10410410),  /* 2^6  / (2^6  - 1) == 1.01587301587302 */
+  MAD_F(0x10204081),  /* 2^7  / (2^7  - 1) == 1.00787401574803 */
+  MAD_F(0x10101010),  /* 2^8  / (2^8  - 1) == 1.00392156862745 */
+  MAD_F(0x10080402),  /* 2^9  / (2^9  - 1) == 1.00195694716243 */
+  MAD_F(0x10040100),  /* 2^10 / (2^10 - 1) == 1.00097751710655 */
+  MAD_F(0x10020040),  /* 2^11 / (2^11 - 1) == 1.00048851978505 */
+  MAD_F(0x10010010),  /* 2^12 / (2^12 - 1) == 1.00024420024420 */
+  MAD_F(0x10008004),  /* 2^13 / (2^13 - 1) == 1.00012208521548 */
+  MAD_F(0x10004001),  /* 2^14 / (2^14 - 1) == 1.00006103888177 */
+  MAD_F(0x10002000)   /* 2^15 / (2^15 - 1) == 1.00003051850948 */
+};
+
+/*
+ * NAME:	I_sample()
+ * DESCRIPTION:	decode one requantized Layer I sample from a bitstream
+ */
+static
+mad_fixed_t I_sample(struct mad_bitptr *ptr, unsigned int nb)
+{
+  mad_fixed_t sample;
+
+  sample = mad_bit_read(ptr, nb);
+
+  /* invert most significant bit, extend sign, then scale to fixed format */
+
+  sample ^= 1 << (nb - 1);
+  sample |= -(sample & (1 << (nb - 1)));
+
+  sample <<= MAD_F_FRACBITS - (nb - 1);
+
+  /* requantize the sample */
+
+  /* s'' = (2^nb / (2^nb - 1)) * (s''' + 2^(-nb + 1)) */
+
+  sample += MAD_F_ONE >> (nb - 1);
+
+  return mad_f_mul(sample, linear_table[nb - 2]);
+
+  /* s' = factor * s'' */
+  /* (to be performed by caller) */
+}
+
+/*
+ * NAME:	layer->I()
+ * DESCRIPTION:	decode a single Layer I frame
+ */
+int mad_layer_I(struct mad_stream *stream, struct mad_frame *frame)
+{
+  struct mad_header *header = &frame->header;
+  unsigned int nch, bound, ch, s, sb, nb;
+  unsigned char allocation[2][32], scalefactor[2][32];
+
+  nch = MAD_NCHANNELS(header);
+
+  bound = 32;
+  if (header->mode == MAD_MODE_JOINT_STEREO) {
+    header->flags |= MAD_FLAG_I_STEREO;
+    bound = 4 + header->mode_extension * 4;
+  }
+
+  /* check CRC word */
+
+  if (header->flags & MAD_FLAG_PROTECTION) {
+    header->crc_check =
+      mad_bit_crc(stream->ptr, 4 * (bound * nch + (32 - bound)),
+		  header->crc_check);
+
+    if (header->crc_check != header->crc_target &&
+	!(frame->options & MAD_OPTION_IGNORECRC)) {
+      stream->error = MAD_ERROR_BADCRC;
+      return -1;
+    }
+  }
+
+  /* decode bit allocations */
+
+  for (sb = 0; sb < bound; ++sb) {
+    for (ch = 0; ch < nch; ++ch) {
+      nb = mad_bit_read(&stream->ptr, 4);
+
+      if (nb == 15) {
+	stream->error = MAD_ERROR_BADBITALLOC;
+	return -1;
+      }
+
+      allocation[ch][sb] = nb ? nb + 1 : 0;
+    }
+  }
+
+  for (sb = bound; sb < 32; ++sb) {
+    nb = mad_bit_read(&stream->ptr, 4);
+
+    if (nb == 15) {
+      stream->error = MAD_ERROR_BADBITALLOC;
+      return -1;
+    }
+
+    allocation[0][sb] =
+    allocation[1][sb] = nb ? nb + 1 : 0;
+  }
+
+  /* decode scalefactors */
+
+  for (sb = 0; sb < 32; ++sb) {
+    for (ch = 0; ch < nch; ++ch) {
+      if (allocation[ch][sb]) {
+	scalefactor[ch][sb] = mad_bit_read(&stream->ptr, 6);
+
+# if defined(OPT_STRICT)
+	/*
+	 * Scalefactor index 63 does not appear in Table B.1 of
+	 * ISO/IEC 11172-3. Nonetheless, other implementations accept it,
+	 * so we only reject it if OPT_STRICT is defined.
+	 */
+	if (scalefactor[ch][sb] == 63) {
+	  stream->error = MAD_ERROR_BADSCALEFACTOR;
+	  return -1;
+	}
+# endif
+      }
+    }
+  }
+
+  /* decode samples */
+
+  for (s = 0; s < 12; ++s) {
+    for (sb = 0; sb < bound; ++sb) {
+      for (ch = 0; ch < nch; ++ch) {
+	nb = allocation[ch][sb];
+	frame->sbsample[ch][s][sb] = nb ?
+	  mad_f_mul(I_sample(&stream->ptr, nb),
+		    sf_table[scalefactor[ch][sb]]) : 0;
+      }
+    }
+
+    for (sb = bound; sb < 32; ++sb) {
+      if ((nb = allocation[0][sb])) {
+	mad_fixed_t sample;
+
+	sample = I_sample(&stream->ptr, nb);
+
+	for (ch = 0; ch < nch; ++ch) {
+	  frame->sbsample[ch][s][sb] =
+	    mad_f_mul(sample, sf_table[scalefactor[ch][sb]]);
+	}
+      }
+      else {
+	for (ch = 0; ch < nch; ++ch)
+	  frame->sbsample[ch][s][sb] = 0;
+      }
+    }
+  }
+
+  return 0;
+}
+
+/* --- Layer II ------------------------------------------------------------ */
+
+/* possible quantization per subband table */
+static
+struct {
+  unsigned int sblimit;
+  unsigned char const offsets[30];
+} const sbquant_table[5] = {
+  /* ISO/IEC 11172-3 Table B.2a */
+  { 27, { 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3,	/* 0 */
+	  3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 0 } },
+  /* ISO/IEC 11172-3 Table B.2b */
+  { 30, { 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3,	/* 1 */
+	  3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 0, 0, 0, 0 } },
+  /* ISO/IEC 11172-3 Table B.2c */
+  {  8, { 5, 5, 2, 2, 2, 2, 2, 2 } },				/* 2 */
+  /* ISO/IEC 11172-3 Table B.2d */
+  { 12, { 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 } },		/* 3 */
+  /* ISO/IEC 13818-3 Table B.1 */
+  { 30, { 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1,	/* 4 */
+	  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 } }
+};
+
+/* bit allocation table */
+static
+struct {
+  unsigned short nbal;
+  unsigned short offset;
+} const bitalloc_table[8] = {
+  { 2, 0 },  /* 0 */
+  { 2, 3 },  /* 1 */
+  { 3, 3 },  /* 2 */
+  { 3, 1 },  /* 3 */
+  { 4, 2 },  /* 4 */
+  { 4, 3 },  /* 5 */
+  { 4, 4 },  /* 6 */
+  { 4, 5 }   /* 7 */
+};
+
+/* offsets into quantization class table */
+static
+unsigned char const offset_table[6][15] = {
+  { 0, 1, 16                                             },  /* 0 */
+  { 0, 1,  2, 3, 4, 5, 16                                },  /* 1 */
+  { 0, 1,  2, 3, 4, 5,  6, 7,  8,  9, 10, 11, 12, 13, 14 },  /* 2 */
+  { 0, 1,  3, 4, 5, 6,  7, 8,  9, 10, 11, 12, 13, 14, 15 },  /* 3 */
+  { 0, 1,  2, 3, 4, 5,  6, 7,  8,  9, 10, 11, 12, 13, 16 },  /* 4 */
+  { 0, 2,  4, 5, 6, 7,  8, 9, 10, 11, 12, 13, 14, 15, 16 }   /* 5 */
+};
+
+/* quantization class table */
+static
+struct quantclass {
+  unsigned short nlevels;
+  unsigned char group;
+  unsigned char bits;
+  mad_fixed_t C;
+  mad_fixed_t D;
+} const qc_table[17] = {
+# include "qc_table.dat"
+};
+
+/*
+ * NAME:	II_samples()
+ * DESCRIPTION:	decode three requantized Layer II samples from a bitstream
+ */
+static
+void II_samples(struct mad_bitptr *ptr,
+		struct quantclass const *quantclass,
+		mad_fixed_t output[3])
+{
+  unsigned int nb, s, sample[3];
+
+  if ((nb = quantclass->group)) {
+    unsigned int c, nlevels;
+
+    /* degrouping */
+    c = mad_bit_read(ptr, quantclass->bits);
+    nlevels = quantclass->nlevels;
+
+    for (s = 0; s < 3; ++s) {
+      sample[s] = c % nlevels;
+      c /= nlevels;
+    }
+  }
+  else {
+    nb = quantclass->bits;
+
+    for (s = 0; s < 3; ++s)
+      sample[s] = mad_bit_read(ptr, nb);
+  }
+
+  for (s = 0; s < 3; ++s) {
+    mad_fixed_t requantized;
+
+    /* invert most significant bit, extend sign, then scale to fixed format */
+
+    requantized  = sample[s] ^ (1 << (nb - 1));
+    requantized |= -(requantized & (1 << (nb - 1)));
+
+    requantized <<= MAD_F_FRACBITS - (nb - 1);
+
+    /* requantize the sample */
+
+    /* s'' = C * (s''' + D) */
+
+    output[s] = mad_f_mul(requantized + quantclass->D, quantclass->C);
+
+    /* s' = factor * s'' */
+    /* (to be performed by caller) */
+  }
+}
+
+/*
+ * NAME:	layer->II()
+ * DESCRIPTION:	decode a single Layer II frame
+ */
+int mad_layer_II(struct mad_stream *stream, struct mad_frame *frame)
+{
+  struct mad_header *header = &frame->header;
+  struct mad_bitptr start;
+  unsigned int index, sblimit, nbal, nch, bound, gr, ch, s, sb;
+  unsigned char const *offsets;
+  unsigned char allocation[2][32], scfsi[2][32], scalefactor[2][32][3];
+  mad_fixed_t samples[3];
+
+  nch = MAD_NCHANNELS(header);
+
+  if (header->flags & MAD_FLAG_LSF_EXT)
+    index = 4;
+  else if (header->flags & MAD_FLAG_FREEFORMAT)
+    goto freeformat;
+  else {
+    unsigned long bitrate_per_channel;
+
+    bitrate_per_channel = header->bitrate;
+    if (nch == 2) {
+      bitrate_per_channel /= 2;
+
+# if defined(OPT_STRICT)
+      /*
+       * ISO/IEC 11172-3 allows only single channel mode for 32, 48, 56, and
+       * 80 kbps bitrates in Layer II, but some encoders ignore this
+       * restriction. We enforce it if OPT_STRICT is defined.
+       */
+      if (bitrate_per_channel <= 28000 || bitrate_per_channel == 40000) {
+	stream->error = MAD_ERROR_BADMODE;
+	return -1;
+      }
+# endif
+    }
+    else {  /* nch == 1 */
+      if (bitrate_per_channel > 192000) {
+	/*
+	 * ISO/IEC 11172-3 does not allow single channel mode for 224, 256,
+	 * 320, or 384 kbps bitrates in Layer II.
+	 */
+	stream->error = MAD_ERROR_BADMODE;
+	return -1;
+      }
+    }
+
+    if (bitrate_per_channel <= 48000)
+      index = (header->samplerate == 32000) ? 3 : 2;
+    else if (bitrate_per_channel <= 80000)
+      index = 0;
+    else {
+    freeformat:
+      index = (header->samplerate == 48000) ? 0 : 1;
+    }
+  }
+
+  sblimit = sbquant_table[index].sblimit;
+  offsets = sbquant_table[index].offsets;
+
+  bound = 32;
+  if (header->mode == MAD_MODE_JOINT_STEREO) {
+    header->flags |= MAD_FLAG_I_STEREO;
+    bound = 4 + header->mode_extension * 4;
+  }
+
+  if (bound > sblimit)
+    bound = sblimit;
+
+  start = stream->ptr;
+
+  /* decode bit allocations */
+
+  for (sb = 0; sb < bound; ++sb) {
+    nbal = bitalloc_table[offsets[sb]].nbal;
+
+    for (ch = 0; ch < nch; ++ch)
+      allocation[ch][sb] = mad_bit_read(&stream->ptr, nbal);
+  }
+
+  for (sb = bound; sb < sblimit; ++sb) {
+    nbal = bitalloc_table[offsets[sb]].nbal;
+
+    allocation[0][sb] =
+    allocation[1][sb] = mad_bit_read(&stream->ptr, nbal);
+  }
+
+  /* decode scalefactor selection info */
+
+  for (sb = 0; sb < sblimit; ++sb) {
+    for (ch = 0; ch < nch; ++ch) {
+      if (allocation[ch][sb])
+	scfsi[ch][sb] = mad_bit_read(&stream->ptr, 2);
+    }
+  }
+
+  /* check CRC word */
+
+  if (header->flags & MAD_FLAG_PROTECTION) {
+    header->crc_check =
+      mad_bit_crc(start, mad_bit_length(&start, &stream->ptr),
+		  header->crc_check);
+
+    if (header->crc_check != header->crc_target &&
+	!(frame->options & MAD_OPTION_IGNORECRC)) {
+      stream->error = MAD_ERROR_BADCRC;
+      return -1;
+    }
+  }
+
+  /* decode scalefactors */
+
+  for (sb = 0; sb < sblimit; ++sb) {
+    for (ch = 0; ch < nch; ++ch) {
+      if (allocation[ch][sb]) {
+	scalefactor[ch][sb][0] = mad_bit_read(&stream->ptr, 6);
+
+	switch (scfsi[ch][sb]) {
+	case 2:
+	  scalefactor[ch][sb][2] =
+	  scalefactor[ch][sb][1] =
+	  scalefactor[ch][sb][0];
+	  break;
+
+	case 0:
+	  scalefactor[ch][sb][1] = mad_bit_read(&stream->ptr, 6);
+	  /* fall through */
+
+	case 1:
+	case 3:
+	  scalefactor[ch][sb][2] = mad_bit_read(&stream->ptr, 6);
+	}
+
+	if (scfsi[ch][sb] & 1)
+	  scalefactor[ch][sb][1] = scalefactor[ch][sb][scfsi[ch][sb] - 1];
+
+# if defined(OPT_STRICT)
+	/*
+	 * Scalefactor index 63 does not appear in Table B.1 of
+	 * ISO/IEC 11172-3. Nonetheless, other implementations accept it,
+	 * so we only reject it if OPT_STRICT is defined.
+	 */
+	if (scalefactor[ch][sb][0] == 63 ||
+	    scalefactor[ch][sb][1] == 63 ||
+	    scalefactor[ch][sb][2] == 63) {
+	  stream->error = MAD_ERROR_BADSCALEFACTOR;
+	  return -1;
+	}
+# endif
+      }
+    }
+  }
+
+  /* decode samples */
+
+  for (gr = 0; gr < 12; ++gr) {
+    for (sb = 0; sb < bound; ++sb) {
+      for (ch = 0; ch < nch; ++ch) {
+	if ((index = allocation[ch][sb])) {
+	  index = offset_table[bitalloc_table[offsets[sb]].offset][index - 1];
+
+	  II_samples(&stream->ptr, &qc_table[index], samples);
+
+	  for (s = 0; s < 3; ++s) {
+	    frame->sbsample[ch][3 * gr + s][sb] =
+	      mad_f_mul(samples[s], sf_table[scalefactor[ch][sb][gr / 4]]);
+	  }
+	}
+	else {
+	  for (s = 0; s < 3; ++s)
+	    frame->sbsample[ch][3 * gr + s][sb] = 0;
+	}
+      }
+    }
+
+    for (sb = bound; sb < sblimit; ++sb) {
+      if ((index = allocation[0][sb])) {
+	index = offset_table[bitalloc_table[offsets[sb]].offset][index - 1];
+
+	II_samples(&stream->ptr, &qc_table[index], samples);
+
+	for (ch = 0; ch < nch; ++ch) {
+	  for (s = 0; s < 3; ++s) {
+	    frame->sbsample[ch][3 * gr + s][sb] =
+	      mad_f_mul(samples[s], sf_table[scalefactor[ch][sb][gr / 4]]);
+	  }
+	}
+      }
+      else {
+	for (ch = 0; ch < nch; ++ch) {
+	  for (s = 0; s < 3; ++s)
+	    frame->sbsample[ch][3 * gr + s][sb] = 0;
+	}
+      }
+    }
+
+    for (ch = 0; ch < nch; ++ch) {
+      for (s = 0; s < 3; ++s) {
+	for (sb = sblimit; sb < 32; ++sb)
+	  frame->sbsample[ch][3 * gr + s][sb] = 0;
+      }
+    }
+  }
+
+  return 0;
+}

code/libmad-0.15.1b/layer12.h

@@ -0,0 +1,31 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: layer12.h,v 1.10 2004/01/23 09:41:32 rob Exp $
+ */
+
+# ifndef LIBMAD_LAYER12_H
+# define LIBMAD_LAYER12_H
+
+# include "stream.h"
+# include "frame.h"
+
+int mad_layer_I(struct mad_stream *, struct mad_frame *);
+int mad_layer_II(struct mad_stream *, struct mad_frame *);
+
+# endif

code/libmad-0.15.1b/layer3.h

@@ -0,0 +1,30 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: layer3.h,v 1.10 2004/01/23 09:41:32 rob Exp $
+ */
+
+# ifndef LIBMAD_LAYER3_H
+# define LIBMAD_LAYER3_H
+
+# include "stream.h"
+# include "frame.h"
+
+int mad_layer_III(struct mad_stream *, struct mad_frame *);
+
+# endif

code/libmad-0.15.1b/qc_table.dat

@@ -0,0 +1,77 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: qc_table.dat,v 1.7 2004/01/23 09:41:32 rob Exp $
+ */
+
+/*
+ * These are the Layer II classes of quantization.
+ * The table is derived from Table B.4 of ISO/IEC 11172-3.
+ */
+
+  {     3, 2,  5,
+    MAD_F(0x15555555) /* 1.33333333333 => 1.33333333209, e  0.00000000124 */,
+    MAD_F(0x08000000) /* 0.50000000000 => 0.50000000000, e  0.00000000000 */ },
+  {     5, 3,  7,
+    MAD_F(0x1999999a) /* 1.60000000000 => 1.60000000149, e -0.00000000149 */,
+    MAD_F(0x08000000) /* 0.50000000000 => 0.50000000000, e  0.00000000000 */ },
+  {     7, 0,  3,
+    MAD_F(0x12492492) /* 1.14285714286 => 1.14285714179, e  0.00000000107 */,
+    MAD_F(0x04000000) /* 0.25000000000 => 0.25000000000, e  0.00000000000 */ },
+  {     9, 4, 10,
+    MAD_F(0x1c71c71c) /* 1.77777777777 => 1.77777777612, e  0.00000000165 */,
+    MAD_F(0x08000000) /* 0.50000000000 => 0.50000000000, e  0.00000000000 */ },
+  {    15, 0,  4,
+    MAD_F(0x11111111) /* 1.06666666666 => 1.06666666642, e  0.00000000024 */,
+    MAD_F(0x02000000) /* 0.12500000000 => 0.12500000000, e  0.00000000000 */ },
+  {    31, 0,  5,
+    MAD_F(0x10842108) /* 1.03225806452 => 1.03225806355, e  0.00000000097 */,
+    MAD_F(0x01000000) /* 0.06250000000 => 0.06250000000, e  0.00000000000 */ },
+  {    63, 0,  6,
+    MAD_F(0x10410410) /* 1.01587301587 => 1.01587301493, e  0.00000000094 */,
+    MAD_F(0x00800000) /* 0.03125000000 => 0.03125000000, e  0.00000000000 */ },
+  {   127, 0,  7,
+    MAD_F(0x10204081) /* 1.00787401575 => 1.00787401572, e  0.00000000003 */,
+    MAD_F(0x00400000) /* 0.01562500000 => 0.01562500000, e  0.00000000000 */ },
+  {   255, 0,  8,
+    MAD_F(0x10101010) /* 1.00392156863 => 1.00392156839, e  0.00000000024 */,
+    MAD_F(0x00200000) /* 0.00781250000 => 0.00781250000, e  0.00000000000 */ },
+  {   511, 0,  9,
+    MAD_F(0x10080402) /* 1.00195694716 => 1.00195694715, e  0.00000000001 */,
+    MAD_F(0x00100000) /* 0.00390625000 => 0.00390625000, e  0.00000000000 */ },
+  {  1023, 0, 10,
+    MAD_F(0x10040100) /* 1.00097751711 => 1.00097751617, e  0.00000000094 */,
+    MAD_F(0x00080000) /* 0.00195312500 => 0.00195312500, e  0.00000000000 */ },
+  {  2047, 0, 11,
+    MAD_F(0x10020040) /* 1.00048851979 => 1.00048851967, e  0.00000000012 */,
+    MAD_F(0x00040000) /* 0.00097656250 => 0.00097656250, e  0.00000000000 */ },
+  {  4095, 0, 12,
+    MAD_F(0x10010010) /* 1.00024420024 => 1.00024420023, e  0.00000000001 */,
+    MAD_F(0x00020000) /* 0.00048828125 => 0.00048828125, e  0.00000000000 */ },
+  {  8191, 0, 13,
+    MAD_F(0x10008004) /* 1.00012208522 => 1.00012208521, e  0.00000000001 */,
+    MAD_F(0x00010000) /* 0.00024414063 => 0.00024414062, e  0.00000000000 */ },
+  { 16383, 0, 14,
+    MAD_F(0x10004001) /* 1.00006103888 => 1.00006103888, e -0.00000000000 */,
+    MAD_F(0x00008000) /* 0.00012207031 => 0.00012207031, e -0.00000000000 */ },
+  { 32767, 0, 15,
+    MAD_F(0x10002000) /* 1.00003051851 => 1.00003051758, e  0.00000000093 */,
+    MAD_F(0x00004000) /* 0.00006103516 => 0.00006103516, e  0.00000000000 */ },
+  { 65535, 0, 16,
+    MAD_F(0x10001000) /* 1.00001525902 => 1.00001525879, e  0.00000000023 */,
+    MAD_F(0x00002000) /* 0.00003051758 => 0.00003051758, e  0.00000000000 */ }

code/libmad-0.15.1b/sf_table.dat

@@ -0,0 +1,106 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: sf_table.dat,v 1.7 2004/01/23 09:41:33 rob Exp $
+ */
+
+/*
+ * These are the scalefactor values for Layer I and Layer II.
+ * The values are from Table B.1 of ISO/IEC 11172-3.
+ *
+ * There is some error introduced by the 32-bit fixed-point representation;
+ * the amount of error is shown. For 16-bit PCM output, this shouldn't be
+ * too much of a problem.
+ *
+ * Strictly speaking, Table B.1 has only 63 entries (0-62), thus a strict
+ * interpretation of ISO/IEC 11172-3 would suggest that a scalefactor index of
+ * 63 is invalid. However, for better compatibility with current practices, we
+ * add a 64th entry.
+ */
+
+  MAD_F(0x20000000),  /* 2.000000000000 => 2.000000000000, e  0.000000000000 */
+  MAD_F(0x1965fea5),  /* 1.587401051968 => 1.587401051074, e  0.000000000894 */
+  MAD_F(0x1428a2fa),  /* 1.259921049895 => 1.259921051562, e -0.000000001667 */
+  MAD_F(0x10000000),  /* 1.000000000000 => 1.000000000000, e  0.000000000000 */
+  MAD_F(0x0cb2ff53),  /* 0.793700525984 => 0.793700527400, e -0.000000001416 */
+  MAD_F(0x0a14517d),  /* 0.629960524947 => 0.629960525781, e -0.000000000833 */
+  MAD_F(0x08000000),  /* 0.500000000000 => 0.500000000000, e  0.000000000000 */
+  MAD_F(0x06597fa9),  /* 0.396850262992 => 0.396850261837, e  0.000000001155 */
+
+  MAD_F(0x050a28be),  /* 0.314980262474 => 0.314980261028, e  0.000000001446 */
+  MAD_F(0x04000000),  /* 0.250000000000 => 0.250000000000, e  0.000000000000 */
+  MAD_F(0x032cbfd5),  /* 0.198425131496 => 0.198425132781, e -0.000000001285 */
+  MAD_F(0x0285145f),  /* 0.157490131237 => 0.157490130514, e  0.000000000723 */
+  MAD_F(0x02000000),  /* 0.125000000000 => 0.125000000000, e  0.000000000000 */
+  MAD_F(0x01965fea),  /* 0.099212565748 => 0.099212564528, e  0.000000001220 */
+  MAD_F(0x01428a30),  /* 0.078745065618 => 0.078745067120, e -0.000000001501 */
+  MAD_F(0x01000000),  /* 0.062500000000 => 0.062500000000, e  0.000000000000 */
+
+  MAD_F(0x00cb2ff5),  /* 0.049606282874 => 0.049606282264, e  0.000000000610 */
+  MAD_F(0x00a14518),  /* 0.039372532809 => 0.039372533560, e -0.000000000751 */
+  MAD_F(0x00800000),  /* 0.031250000000 => 0.031250000000, e  0.000000000000 */
+  MAD_F(0x006597fb),  /* 0.024803141437 => 0.024803142995, e -0.000000001558 */
+  MAD_F(0x0050a28c),  /* 0.019686266405 => 0.019686266780, e -0.000000000375 */
+  MAD_F(0x00400000),  /* 0.015625000000 => 0.015625000000, e  0.000000000000 */
+  MAD_F(0x0032cbfd),  /* 0.012401570719 => 0.012401569635, e  0.000000001084 */
+  MAD_F(0x00285146),  /* 0.009843133202 => 0.009843133390, e -0.000000000188 */
+
+  MAD_F(0x00200000),  /* 0.007812500000 => 0.007812500000, e  0.000000000000 */
+  MAD_F(0x001965ff),  /* 0.006200785359 => 0.006200786680, e -0.000000001321 */
+  MAD_F(0x001428a3),  /* 0.004921566601 => 0.004921566695, e -0.000000000094 */
+  MAD_F(0x00100000),  /* 0.003906250000 => 0.003906250000, e  0.000000000000 */
+  MAD_F(0x000cb2ff),  /* 0.003100392680 => 0.003100391477, e  0.000000001202 */
+  MAD_F(0x000a1451),  /* 0.002460783301 => 0.002460781485, e  0.000000001816 */
+  MAD_F(0x00080000),  /* 0.001953125000 => 0.001953125000, e  0.000000000000 */
+  MAD_F(0x00065980),  /* 0.001550196340 => 0.001550197601, e -0.000000001262 */
+
+  MAD_F(0x00050a29),  /* 0.001230391650 => 0.001230392605, e -0.000000000955 */
+  MAD_F(0x00040000),  /* 0.000976562500 => 0.000976562500, e  0.000000000000 */
+  MAD_F(0x00032cc0),  /* 0.000775098170 => 0.000775098801, e -0.000000000631 */
+  MAD_F(0x00028514),  /* 0.000615195825 => 0.000615194440, e  0.000000001385 */
+  MAD_F(0x00020000),  /* 0.000488281250 => 0.000488281250, e  0.000000000000 */
+  MAD_F(0x00019660),  /* 0.000387549085 => 0.000387549400, e -0.000000000315 */
+  MAD_F(0x0001428a),  /* 0.000307597913 => 0.000307597220, e  0.000000000693 */
+  MAD_F(0x00010000),  /* 0.000244140625 => 0.000244140625, e  0.000000000000 */
+
+  MAD_F(0x0000cb30),  /* 0.000193774542 => 0.000193774700, e -0.000000000158 */
+  MAD_F(0x0000a145),  /* 0.000153798956 => 0.000153798610, e  0.000000000346 */
+  MAD_F(0x00008000),  /* 0.000122070313 => 0.000122070313, e  0.000000000000 */
+  MAD_F(0x00006598),  /* 0.000096887271 => 0.000096887350, e -0.000000000079 */
+  MAD_F(0x000050a3),  /* 0.000076899478 => 0.000076901168, e -0.000000001689 */
+  MAD_F(0x00004000),  /* 0.000061035156 => 0.000061035156, e  0.000000000000 */
+  MAD_F(0x000032cc),  /* 0.000048443636 => 0.000048443675, e -0.000000000039 */
+  MAD_F(0x00002851),  /* 0.000038449739 => 0.000038448721, e  0.000000001018 */
+
+  MAD_F(0x00002000),  /* 0.000030517578 => 0.000030517578, e  0.000000000000 */
+  MAD_F(0x00001966),  /* 0.000024221818 => 0.000024221838, e -0.000000000020 */
+  MAD_F(0x00001429),  /* 0.000019224870 => 0.000019226223, e -0.000000001354 */
+  MAD_F(0x00001000),  /* 0.000015258789 => 0.000015258789, e -0.000000000000 */
+  MAD_F(0x00000cb3),  /* 0.000012110909 => 0.000012110919, e -0.000000000010 */
+  MAD_F(0x00000a14),  /* 0.000009612435 => 0.000009611249, e  0.000000001186 */
+  MAD_F(0x00000800),  /* 0.000007629395 => 0.000007629395, e -0.000000000000 */
+  MAD_F(0x00000659),  /* 0.000006055454 => 0.000006053597, e  0.000000001858 */
+
+  MAD_F(0x0000050a),  /* 0.000004806217 => 0.000004805624, e  0.000000000593 */
+  MAD_F(0x00000400),  /* 0.000003814697 => 0.000003814697, e  0.000000000000 */
+  MAD_F(0x0000032d),  /* 0.000003027727 => 0.000003028661, e -0.000000000934 */
+  MAD_F(0x00000285),  /* 0.000002403109 => 0.000002402812, e  0.000000000296 */
+  MAD_F(0x00000200),  /* 0.000001907349 => 0.000001907349, e -0.000000000000 */
+  MAD_F(0x00000196),  /* 0.000001513864 => 0.000001512468, e  0.000000001396 */
+  MAD_F(0x00000143),  /* 0.000001201554 => 0.000001203269, e -0.000000001714 */
+  MAD_F(0x00000000)   /* this compatibility entry is not part of Table B.1 */

code/libmad-0.15.1b/stream.c

@@ -0,0 +1,161 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: stream.c,v 1.12 2004/02/05 09:02:39 rob Exp $
+ */
+
+# if 1 //ifdef HAVE_CONFIG_H
+#  include "config.h"
+# endif
+
+# include "global.h"
+
+# include <stdlib.h>
+
+# include "bit.h"
+# include "stream.h"
+
+/*
+ * NAME:	stream->init()
+ * DESCRIPTION:	initialize stream struct
+ */
+void mad_stream_init(struct mad_stream *stream)
+{
+  stream->buffer     = 0;
+  stream->bufend     = 0;
+  stream->skiplen    = 0;
+
+  stream->sync       = 0;
+  stream->freerate   = 0;
+
+  stream->this_frame = 0;
+  stream->next_frame = 0;
+  mad_bit_init(&stream->ptr, 0);
+
+  mad_bit_init(&stream->anc_ptr, 0);
+  stream->anc_bitlen = 0;
+
+  stream->main_data  = 0;
+  stream->md_len     = 0;
+
+  stream->options    = 0;
+  stream->error      = MAD_ERROR_NONE;
+}
+
+/*
+ * NAME:	stream->finish()
+ * DESCRIPTION:	deallocate any dynamic memory associated with stream
+ */
+void mad_stream_finish(struct mad_stream *stream)
+{
+  if (stream->main_data) {
+    free(stream->main_data);
+    stream->main_data = 0;
+  }
+
+  mad_bit_finish(&stream->anc_ptr);
+  mad_bit_finish(&stream->ptr);
+}
+
+/*
+ * NAME:	stream->buffer()
+ * DESCRIPTION:	set stream buffer pointers
+ */
+void mad_stream_buffer(struct mad_stream *stream,
+		       unsigned char const *buffer, unsigned long length)
+{
+  stream->buffer = buffer;
+  stream->bufend = buffer + length;
+
+  stream->this_frame = buffer;
+  stream->next_frame = buffer;
+
+  stream->sync = 1;
+
+  mad_bit_init(&stream->ptr, buffer);
+}
+
+/*
+ * NAME:	stream->skip()
+ * DESCRIPTION:	arrange to skip bytes before the next frame
+ */
+void mad_stream_skip(struct mad_stream *stream, unsigned long length)
+{
+  stream->skiplen += length;
+}
+
+/*
+ * NAME:	stream->sync()
+ * DESCRIPTION:	locate the next stream sync word
+ */
+int mad_stream_sync(struct mad_stream *stream)
+{
+  register unsigned char const *ptr, *end;
+
+  ptr = mad_bit_nextbyte(&stream->ptr);
+  end = stream->bufend;
+
+  while (ptr < end - 1 &&
+	 !(ptr[0] == 0xff && (ptr[1] & 0xe0) == 0xe0))
+    ++ptr;
+
+  if (end - ptr < MAD_BUFFER_GUARD)
+    return -1;
+
+  mad_bit_init(&stream->ptr, ptr);
+
+  return 0;
+}
+
+/*
+ * NAME:	stream->errorstr()
+ * DESCRIPTION:	return a string description of the current error condition
+ */
+char const *mad_stream_errorstr(struct mad_stream const *stream)
+{
+  switch (stream->error) {
+  case MAD_ERROR_NONE:		 return "no error";
+
+  case MAD_ERROR_BUFLEN:	 return "input buffer too small (or EOF)";
+  case MAD_ERROR_BUFPTR:	 return "invalid (null) buffer pointer";
+
+  case MAD_ERROR_NOMEM:		 return "not enough memory";
+
+  case MAD_ERROR_LOSTSYNC:	 return "lost synchronization";
+  case MAD_ERROR_BADLAYER:	 return "reserved header layer value";
+  case MAD_ERROR_BADBITRATE:	 return "forbidden bitrate value";
+  case MAD_ERROR_BADSAMPLERATE:	 return "reserved sample frequency value";
+  case MAD_ERROR_BADEMPHASIS:	 return "reserved emphasis value";
+
+  case MAD_ERROR_BADCRC:	 return "CRC check failed";
+  case MAD_ERROR_BADBITALLOC:	 return "forbidden bit allocation value";
+  case MAD_ERROR_BADSCALEFACTOR: return "bad scalefactor index";
+  case MAD_ERROR_BADMODE:	 return "bad bitrate/mode combination";
+  case MAD_ERROR_BADFRAMELEN:	 return "bad frame length";
+  case MAD_ERROR_BADBIGVALUES:	 return "bad big_values count";
+  case MAD_ERROR_BADBLOCKTYPE:	 return "reserved block_type";
+  case MAD_ERROR_BADSCFSI:	 return "bad scalefactor selection info";
+  case MAD_ERROR_BADDATAPTR:	 return "bad main_data_begin pointer";
+  case MAD_ERROR_BADPART3LEN:	 return "bad audio data length";
+  case MAD_ERROR_BADHUFFTABLE:	 return "bad Huffman table select";
+  case MAD_ERROR_BADHUFFDATA:	 return "Huffman data overrun";
+  case MAD_ERROR_BADSTEREO:	 return "incompatible block_type for JS";
+  }
+
+  return 0;
+}

code/libmad-0.15.1b/stream.h

@@ -0,0 +1,108 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: stream.h,v 1.20 2004/02/05 09:02:39 rob Exp $
+ */
+
+# ifndef LIBMAD_STREAM_H
+# define LIBMAD_STREAM_H
+
+# include "bit.h"
+
+# define MAD_BUFFER_GUARD	8
+# define MAD_BUFFER_MDLEN	(511 + 2048 + MAD_BUFFER_GUARD)
+
+enum mad_error {
+  MAD_ERROR_NONE	   = 0x0000,	/* no error */
+
+  MAD_ERROR_BUFLEN	   = 0x0001,	/* input buffer too small (or EOF) */
+  MAD_ERROR_BUFPTR	   = 0x0002,	/* invalid (null) buffer pointer */
+
+  MAD_ERROR_NOMEM	   = 0x0031,	/* not enough memory */
+
+  MAD_ERROR_LOSTSYNC	   = 0x0101,	/* lost synchronization */
+  MAD_ERROR_BADLAYER	   = 0x0102,	/* reserved header layer value */
+  MAD_ERROR_BADBITRATE	   = 0x0103,	/* forbidden bitrate value */
+  MAD_ERROR_BADSAMPLERATE  = 0x0104,	/* reserved sample frequency value */
+  MAD_ERROR_BADEMPHASIS	   = 0x0105,	/* reserved emphasis value */
+
+  MAD_ERROR_BADCRC	   = 0x0201,	/* CRC check failed */
+  MAD_ERROR_BADBITALLOC	   = 0x0211,	/* forbidden bit allocation value */
+  MAD_ERROR_BADSCALEFACTOR = 0x0221,	/* bad scalefactor index */
+  MAD_ERROR_BADMODE        = 0x0222,	/* bad bitrate/mode combination */
+  MAD_ERROR_BADFRAMELEN	   = 0x0231,	/* bad frame length */
+  MAD_ERROR_BADBIGVALUES   = 0x0232,	/* bad big_values count */
+  MAD_ERROR_BADBLOCKTYPE   = 0x0233,	/* reserved block_type */
+  MAD_ERROR_BADSCFSI	   = 0x0234,	/* bad scalefactor selection info */
+  MAD_ERROR_BADDATAPTR	   = 0x0235,	/* bad main_data_begin pointer */
+  MAD_ERROR_BADPART3LEN	   = 0x0236,	/* bad audio data length */
+  MAD_ERROR_BADHUFFTABLE   = 0x0237,	/* bad Huffman table select */
+  MAD_ERROR_BADHUFFDATA	   = 0x0238,	/* Huffman data overrun */
+  MAD_ERROR_BADSTEREO	   = 0x0239	/* incompatible block_type for JS */
+};
+
+# define MAD_RECOVERABLE(error)	((error) & 0xff00)
+
+struct mad_stream {
+  unsigned char const *buffer;		/* input bitstream buffer */
+  unsigned char const *bufend;		/* end of buffer */
+  unsigned long skiplen;		/* bytes to skip before next frame */
+
+  int sync;				/* stream sync found */
+  unsigned long freerate;		/* free bitrate (fixed) */
+
+  unsigned char const *this_frame;	/* start of current frame */
+  unsigned char const *next_frame;	/* start of next frame */
+  struct mad_bitptr ptr;		/* current processing bit pointer */
+
+  struct mad_bitptr anc_ptr;		/* ancillary bits pointer */
+  unsigned int anc_bitlen;		/* number of ancillary bits */
+
+  unsigned char (*main_data)[MAD_BUFFER_MDLEN];
+					/* Layer III main_data() */
+  unsigned int md_len;			/* bytes in main_data */
+
+  int options;				/* decoding options (see below) */
+  enum mad_error error;			/* error code (see above) */
+};
+
+enum {
+  MAD_OPTION_IGNORECRC      = 0x0001,	/* ignore CRC errors */
+  MAD_OPTION_HALFSAMPLERATE = 0x0002	/* generate PCM at 1/2 sample rate */
+# if 0  /* not yet implemented */
+  MAD_OPTION_LEFTCHANNEL    = 0x0010,	/* decode left channel only */
+  MAD_OPTION_RIGHTCHANNEL   = 0x0020,	/* decode right channel only */
+  MAD_OPTION_SINGLECHANNEL  = 0x0030	/* combine channels */
+# endif
+};
+
+void mad_stream_init(struct mad_stream *);
+void mad_stream_finish(struct mad_stream *);
+
+# define mad_stream_options(stream, opts)  \
+    ((void) ((stream)->options = (opts)))
+
+void mad_stream_buffer(struct mad_stream *,
+		       unsigned char const *, unsigned long);
+void mad_stream_skip(struct mad_stream *, unsigned long);
+
+int mad_stream_sync(struct mad_stream *);
+
+char const *mad_stream_errorstr(struct mad_stream const *);
+
+# endif

code/libmad-0.15.1b/synth.c

@@ -0,0 +1,857 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: synth.c,v 1.25 2004/01/23 09:41:33 rob Exp $
+ */
+
+# if 1 //ifdef HAVE_CONFIG_H
+#  include "config.h"
+# endif
+
+# include "global.h"
+
+# include "fixed.h"
+# include "frame.h"
+# include "synth.h"
+
+/*
+ * NAME:	synth->init()
+ * DESCRIPTION:	initialize synth struct
+ */
+void mad_synth_init(struct mad_synth *synth)
+{
+  mad_synth_mute(synth);
+
+  synth->phase = 0;
+
+  synth->pcm.samplerate = 0;
+  synth->pcm.channels   = 0;
+  synth->pcm.length     = 0;
+}
+
+/*
+ * NAME:	synth->mute()
+ * DESCRIPTION:	zero all polyphase filterbank values, resetting synthesis
+ */
+void mad_synth_mute(struct mad_synth *synth)
+{
+  unsigned int ch, s, v;
+
+  for (ch = 0; ch < 2; ++ch) {
+    for (s = 0; s < 16; ++s) {
+      for (v = 0; v < 8; ++v) {
+	synth->filter[ch][0][0][s][v] = synth->filter[ch][0][1][s][v] =
+	synth->filter[ch][1][0][s][v] = synth->filter[ch][1][1][s][v] = 0;
+      }
+    }
+  }
+}
+
+/*
+ * An optional optimization called here the Subband Synthesis Optimization
+ * (SSO) improves the performance of subband synthesis at the expense of
+ * accuracy.
+ *
+ * The idea is to simplify 32x32->64-bit multiplication to 32x32->32 such
+ * that extra scaling and rounding are not necessary. This often allows the
+ * compiler to use faster 32-bit multiply-accumulate instructions instead of
+ * explicit 64-bit multiply, shift, and add instructions.
+ *
+ * SSO works like this: a full 32x32->64-bit multiply of two mad_fixed_t
+ * values requires the result to be right-shifted 28 bits to be properly
+ * scaled to the same fixed-point format. Right shifts can be applied at any
+ * time to either operand or to the result, so the optimization involves
+ * careful placement of these shifts to minimize the loss of accuracy.
+ *
+ * First, a 14-bit shift is applied with rounding at compile-time to the D[]
+ * table of coefficients for the subband synthesis window. This only loses 2
+ * bits of accuracy because the lower 12 bits are always zero. A second
+ * 12-bit shift occurs after the DCT calculation. This loses 12 bits of
+ * accuracy. Finally, a third 2-bit shift occurs just before the sample is
+ * saved in the PCM buffer. 14 + 12 + 2 == 28 bits.
+ */
+
+/* FPM_DEFAULT without OPT_SSO will actually lose accuracy and performance */
+
+# if defined(FPM_DEFAULT) && !defined(OPT_SSO)
+#  define OPT_SSO
+# endif
+
+/* second SSO shift, with rounding */
+
+# if defined(OPT_SSO)
+#  define SHIFT(x)  (((x) + (1L << 11)) >> 12)
+# else
+#  define SHIFT(x)  (x)
+# endif
+
+/* possible DCT speed optimization */
+
+# if defined(OPT_SPEED) && defined(MAD_F_MLX)
+#  define OPT_DCTO
+#  define MUL(x, y)  \
+    ({ mad_fixed64hi_t hi;  \
+       mad_fixed64lo_t lo;  \
+       MAD_F_MLX(hi, lo, (x), (y));  \
+       hi << (32 - MAD_F_SCALEBITS - 3);  \
+    })
+# else
+#  undef OPT_DCTO
+#  define MUL(x, y)  mad_f_mul((x), (y))
+# endif
+
+/*
+ * NAME:	dct32()
+ * DESCRIPTION:	perform fast in[32]->out[32] DCT
+ */
+static
+void dct32(mad_fixed_t const in[32], unsigned int slot,
+	   mad_fixed_t lo[16][8], mad_fixed_t hi[16][8])
+{
+  mad_fixed_t t0,   t1,   t2,   t3,   t4,   t5,   t6,   t7;
+  mad_fixed_t t8,   t9,   t10,  t11,  t12,  t13,  t14,  t15;
+  mad_fixed_t t16,  t17,  t18,  t19,  t20,  t21,  t22,  t23;
+  mad_fixed_t t24,  t25,  t26,  t27,  t28,  t29,  t30,  t31;
+  mad_fixed_t t32,  t33,  t34,  t35,  t36,  t37,  t38,  t39;
+  mad_fixed_t t40,  t41,  t42,  t43,  t44,  t45,  t46,  t47;
+  mad_fixed_t t48,  t49,  t50,  t51,  t52,  t53,  t54,  t55;
+  mad_fixed_t t56,  t57,  t58,  t59,  t60,  t61,  t62,  t63;
+  mad_fixed_t t64,  t65,  t66,  t67,  t68,  t69,  t70,  t71;
+  mad_fixed_t t72,  t73,  t74,  t75,  t76,  t77,  t78,  t79;
+  mad_fixed_t t80,  t81,  t82,  t83,  t84,  t85,  t86,  t87;
+  mad_fixed_t t88,  t89,  t90,  t91,  t92,  t93,  t94,  t95;
+  mad_fixed_t t96,  t97,  t98,  t99,  t100, t101, t102, t103;
+  mad_fixed_t t104, t105, t106, t107, t108, t109, t110, t111;
+  mad_fixed_t t112, t113, t114, t115, t116, t117, t118, t119;
+  mad_fixed_t t120, t121, t122, t123, t124, t125, t126, t127;
+  mad_fixed_t t128, t129, t130, t131, t132, t133, t134, t135;
+  mad_fixed_t t136, t137, t138, t139, t140, t141, t142, t143;
+  mad_fixed_t t144, t145, t146, t147, t148, t149, t150, t151;
+  mad_fixed_t t152, t153, t154, t155, t156, t157, t158, t159;
+  mad_fixed_t t160, t161, t162, t163, t164, t165, t166, t167;
+  mad_fixed_t t168, t169, t170, t171, t172, t173, t174, t175;
+  mad_fixed_t t176;
+
+  /* costab[i] = cos(PI / (2 * 32) * i) */
+
+# if defined(OPT_DCTO)
+#  define costab1	MAD_F(0x7fd8878e)
+#  define costab2	MAD_F(0x7f62368f)
+#  define costab3	MAD_F(0x7e9d55fc)
+#  define costab4	MAD_F(0x7d8a5f40)
+#  define costab5	MAD_F(0x7c29fbee)
+#  define costab6	MAD_F(0x7a7d055b)
+#  define costab7	MAD_F(0x78848414)
+#  define costab8	MAD_F(0x7641af3d)
+#  define costab9	MAD_F(0x73b5ebd1)
+#  define costab10	MAD_F(0x70e2cbc6)
+#  define costab11	MAD_F(0x6dca0d14)
+#  define costab12	MAD_F(0x6a6d98a4)
+#  define costab13	MAD_F(0x66cf8120)
+#  define costab14	MAD_F(0x62f201ac)
+#  define costab15	MAD_F(0x5ed77c8a)
+#  define costab16	MAD_F(0x5a82799a)
+#  define costab17	MAD_F(0x55f5a4d2)
+#  define costab18	MAD_F(0x5133cc94)
+#  define costab19	MAD_F(0x4c3fdff4)
+#  define costab20	MAD_F(0x471cece7)
+#  define costab21	MAD_F(0x41ce1e65)
+#  define costab22	MAD_F(0x3c56ba70)
+#  define costab23	MAD_F(0x36ba2014)
+#  define costab24	MAD_F(0x30fbc54d)
+#  define costab25	MAD_F(0x2b1f34eb)
+#  define costab26	MAD_F(0x25280c5e)
+#  define costab27	MAD_F(0x1f19f97b)
+#  define costab28	MAD_F(0x18f8b83c)
+#  define costab29	MAD_F(0x12c8106f)
+#  define costab30	MAD_F(0x0c8bd35e)
+#  define costab31	MAD_F(0x0647d97c)
+# else
+#  define costab1	MAD_F(0x0ffb10f2)  /* 0.998795456 */
+#  define costab2	MAD_F(0x0fec46d2)  /* 0.995184727 */
+#  define costab3	MAD_F(0x0fd3aac0)  /* 0.989176510 */
+#  define costab4	MAD_F(0x0fb14be8)  /* 0.980785280 */
+#  define costab5	MAD_F(0x0f853f7e)  /* 0.970031253 */
+#  define costab6	MAD_F(0x0f4fa0ab)  /* 0.956940336 */
+#  define costab7	MAD_F(0x0f109082)  /* 0.941544065 */
+#  define costab8	MAD_F(0x0ec835e8)  /* 0.923879533 */
+#  define costab9	MAD_F(0x0e76bd7a)  /* 0.903989293 */
+#  define costab10	MAD_F(0x0e1c5979)  /* 0.881921264 */
+#  define costab11	MAD_F(0x0db941a3)  /* 0.857728610 */
+#  define costab12	MAD_F(0x0d4db315)  /* 0.831469612 */
+#  define costab13	MAD_F(0x0cd9f024)  /* 0.803207531 */
+#  define costab14	MAD_F(0x0c5e4036)  /* 0.773010453 */
+#  define costab15	MAD_F(0x0bdaef91)  /* 0.740951125 */
+#  define costab16	MAD_F(0x0b504f33)  /* 0.707106781 */
+#  define costab17	MAD_F(0x0abeb49a)  /* 0.671558955 */
+#  define costab18	MAD_F(0x0a267993)  /* 0.634393284 */
+#  define costab19	MAD_F(0x0987fbfe)  /* 0.595699304 */
+#  define costab20	MAD_F(0x08e39d9d)  /* 0.555570233 */
+#  define costab21	MAD_F(0x0839c3cd)  /* 0.514102744 */
+#  define costab22	MAD_F(0x078ad74e)  /* 0.471396737 */
+#  define costab23	MAD_F(0x06d74402)  /* 0.427555093 */
+#  define costab24	MAD_F(0x061f78aa)  /* 0.382683432 */
+#  define costab25	MAD_F(0x0563e69d)  /* 0.336889853 */
+#  define costab26	MAD_F(0x04a5018c)  /* 0.290284677 */
+#  define costab27	MAD_F(0x03e33f2f)  /* 0.242980180 */
+#  define costab28	MAD_F(0x031f1708)  /* 0.195090322 */
+#  define costab29	MAD_F(0x0259020e)  /* 0.146730474 */
+#  define costab30	MAD_F(0x01917a6c)  /* 0.098017140 */
+#  define costab31	MAD_F(0x00c8fb30)  /* 0.049067674 */
+# endif
+
+  t0   = in[0]  + in[31];  t16  = MUL(in[0]  - in[31], costab1);
+  t1   = in[15] + in[16];  t17  = MUL(in[15] - in[16], costab31);
+
+  t41  = t16 + t17;
+  t59  = MUL(t16 - t17, costab2);
+  t33  = t0  + t1;
+  t50  = MUL(t0  - t1,  costab2);
+
+  t2   = in[7]  + in[24];  t18  = MUL(in[7]  - in[24], costab15);
+  t3   = in[8]  + in[23];  t19  = MUL(in[8]  - in[23], costab17);
+
+  t42  = t18 + t19;
+  t60  = MUL(t18 - t19, costab30);
+  t34  = t2  + t3;
+  t51  = MUL(t2  - t3,  costab30);
+
+  t4   = in[3]  + in[28];  t20  = MUL(in[3]  - in[28], costab7);
+  t5   = in[12] + in[19];  t21  = MUL(in[12] - in[19], costab25);
+
+  t43  = t20 + t21;
+  t61  = MUL(t20 - t21, costab14);
+  t35  = t4  + t5;
+  t52  = MUL(t4  - t5,  costab14);
+
+  t6   = in[4]  + in[27];  t22  = MUL(in[4]  - in[27], costab9);
+  t7   = in[11] + in[20];  t23  = MUL(in[11] - in[20], costab23);
+
+  t44  = t22 + t23;
+  t62  = MUL(t22 - t23, costab18);
+  t36  = t6  + t7;
+  t53  = MUL(t6  - t7,  costab18);
+
+  t8   = in[1]  + in[30];  t24  = MUL(in[1]  - in[30], costab3);
+  t9   = in[14] + in[17];  t25  = MUL(in[14] - in[17], costab29);
+
+  t45  = t24 + t25;
+  t63  = MUL(t24 - t25, costab6);
+  t37  = t8  + t9;
+  t54  = MUL(t8  - t9,  costab6);
+
+  t10  = in[6]  + in[25];  t26  = MUL(in[6]  - in[25], costab13);
+  t11  = in[9]  + in[22];  t27  = MUL(in[9]  - in[22], costab19);
+
+  t46  = t26 + t27;
+  t64  = MUL(t26 - t27, costab26);
+  t38  = t10 + t11;
+  t55  = MUL(t10 - t11, costab26);
+
+  t12  = in[2]  + in[29];  t28  = MUL(in[2]  - in[29], costab5);
+  t13  = in[13] + in[18];  t29  = MUL(in[13] - in[18], costab27);
+
+  t47  = t28 + t29;
+  t65  = MUL(t28 - t29, costab10);
+  t39  = t12 + t13;
+  t56  = MUL(t12 - t13, costab10);
+
+  t14  = in[5]  + in[26];  t30  = MUL(in[5]  - in[26], costab11);
+  t15  = in[10] + in[21];  t31  = MUL(in[10] - in[21], costab21);
+
+  t48  = t30 + t31;
+  t66  = MUL(t30 - t31, costab22);
+  t40  = t14 + t15;
+  t57  = MUL(t14 - t15, costab22);
+
+  t69  = t33 + t34;  t89  = MUL(t33 - t34, costab4);
+  t70  = t35 + t36;  t90  = MUL(t35 - t36, costab28);
+  t71  = t37 + t38;  t91  = MUL(t37 - t38, costab12);
+  t72  = t39 + t40;  t92  = MUL(t39 - t40, costab20);
+  t73  = t41 + t42;  t94  = MUL(t41 - t42, costab4);
+  t74  = t43 + t44;  t95  = MUL(t43 - t44, costab28);
+  t75  = t45 + t46;  t96  = MUL(t45 - t46, costab12);
+  t76  = t47 + t48;  t97  = MUL(t47 - t48, costab20);
+
+  t78  = t50 + t51;  t100 = MUL(t50 - t51, costab4);
+  t79  = t52 + t53;  t101 = MUL(t52 - t53, costab28);
+  t80  = t54 + t55;  t102 = MUL(t54 - t55, costab12);
+  t81  = t56 + t57;  t103 = MUL(t56 - t57, costab20);
+
+  t83  = t59 + t60;  t106 = MUL(t59 - t60, costab4);
+  t84  = t61 + t62;  t107 = MUL(t61 - t62, costab28);
+  t85  = t63 + t64;  t108 = MUL(t63 - t64, costab12);
+  t86  = t65 + t66;  t109 = MUL(t65 - t66, costab20);
+
+  t113 = t69  + t70;
+  t114 = t71  + t72;
+
+  /*  0 */ hi[15][slot] = SHIFT(t113 + t114);
+  /* 16 */ lo[ 0][slot] = SHIFT(MUL(t113 - t114, costab16));
+
+  t115 = t73  + t74;
+  t116 = t75  + t76;
+
+  t32  = t115 + t116;
+
+  /*  1 */ hi[14][slot] = SHIFT(t32);
+
+  t118 = t78  + t79;
+  t119 = t80  + t81;
+
+  t58  = t118 + t119;
+
+  /*  2 */ hi[13][slot] = SHIFT(t58);
+
+  t121 = t83  + t84;
+  t122 = t85  + t86;
+
+  t67  = t121 + t122;
+
+  t49  = (t67 * 2) - t32;
+
+  /*  3 */ hi[12][slot] = SHIFT(t49);
+
+  t125 = t89  + t90;
+  t126 = t91  + t92;
+
+  t93  = t125 + t126;
+
+  /*  4 */ hi[11][slot] = SHIFT(t93);
+
+  t128 = t94  + t95;
+  t129 = t96  + t97;
+
+  t98  = t128 + t129;
+
+  t68  = (t98 * 2) - t49;
+
+  /*  5 */ hi[10][slot] = SHIFT(t68);
+
+  t132 = t100 + t101;
+  t133 = t102 + t103;
+
+  t104 = t132 + t133;
+
+  t82  = (t104 * 2) - t58;
+
+  /*  6 */ hi[ 9][slot] = SHIFT(t82);
+
+  t136 = t106 + t107;
+  t137 = t108 + t109;
+
+  t110 = t136 + t137;
+
+  t87  = (t110 * 2) - t67;
+
+  t77  = (t87 * 2) - t68;
+
+  /*  7 */ hi[ 8][slot] = SHIFT(t77);
+
+  t141 = MUL(t69 - t70, costab8);
+  t142 = MUL(t71 - t72, costab24);
+  t143 = t141 + t142;
+
+  /*  8 */ hi[ 7][slot] = SHIFT(t143);
+  /* 24 */ lo[ 8][slot] =
+	     SHIFT((MUL(t141 - t142, costab16) * 2) - t143);
+
+  t144 = MUL(t73 - t74, costab8);
+  t145 = MUL(t75 - t76, costab24);
+  t146 = t144 + t145;
+
+  t88  = (t146 * 2) - t77;
+
+  /*  9 */ hi[ 6][slot] = SHIFT(t88);
+
+  t148 = MUL(t78 - t79, costab8);
+  t149 = MUL(t80 - t81, costab24);
+  t150 = t148 + t149;
+
+  t105 = (t150 * 2) - t82;
+
+  /* 10 */ hi[ 5][slot] = SHIFT(t105);
+
+  t152 = MUL(t83 - t84, costab8);
+  t153 = MUL(t85 - t86, costab24);
+  t154 = t152 + t153;
+
+  t111 = (t154 * 2) - t87;
+
+  t99  = (t111 * 2) - t88;
+
+  /* 11 */ hi[ 4][slot] = SHIFT(t99);
+
+  t157 = MUL(t89 - t90, costab8);
+  t158 = MUL(t91 - t92, costab24);
+  t159 = t157 + t158;
+
+  t127 = (t159 * 2) - t93;
+
+  /* 12 */ hi[ 3][slot] = SHIFT(t127);
+
+  t160 = (MUL(t125 - t126, costab16) * 2) - t127;
+
+  /* 20 */ lo[ 4][slot] = SHIFT(t160);
+  /* 28 */ lo[12][slot] =
+	     SHIFT((((MUL(t157 - t158, costab16) * 2) - t159) * 2) - t160);
+
+  t161 = MUL(t94 - t95, costab8);
+  t162 = MUL(t96 - t97, costab24);
+  t163 = t161 + t162;
+
+  t130 = (t163 * 2) - t98;
+
+  t112 = (t130 * 2) - t99;
+
+  /* 13 */ hi[ 2][slot] = SHIFT(t112);
+
+  t164 = (MUL(t128 - t129, costab16) * 2) - t130;
+
+  t166 = MUL(t100 - t101, costab8);
+  t167 = MUL(t102 - t103, costab24);
+  t168 = t166 + t167;
+
+  t134 = (t168 * 2) - t104;
+
+  t120 = (t134 * 2) - t105;
+
+  /* 14 */ hi[ 1][slot] = SHIFT(t120);
+
+  t135 = (MUL(t118 - t119, costab16) * 2) - t120;
+
+  /* 18 */ lo[ 2][slot] = SHIFT(t135);
+
+  t169 = (MUL(t132 - t133, costab16) * 2) - t134;
+
+  t151 = (t169 * 2) - t135;
+
+  /* 22 */ lo[ 6][slot] = SHIFT(t151);
+
+  t170 = (((MUL(t148 - t149, costab16) * 2) - t150) * 2) - t151;
+
+  /* 26 */ lo[10][slot] = SHIFT(t170);
+  /* 30 */ lo[14][slot] =
+	     SHIFT((((((MUL(t166 - t167, costab16) * 2) -
+		       t168) * 2) - t169) * 2) - t170);
+
+  t171 = MUL(t106 - t107, costab8);
+  t172 = MUL(t108 - t109, costab24);
+  t173 = t171 + t172;
+
+  t138 = (t173 * 2) - t110;
+
+  t123 = (t138 * 2) - t111;
+
+  t139 = (MUL(t121 - t122, costab16) * 2) - t123;
+
+  t117 = (t123 * 2) - t112;
+
+  /* 15 */ hi[ 0][slot] = SHIFT(t117);
+
+  t124 = (MUL(t115 - t116, costab16) * 2) - t117;
+
+  /* 17 */ lo[ 1][slot] = SHIFT(t124);
+
+  t131 = (t139 * 2) - t124;
+
+  /* 19 */ lo[ 3][slot] = SHIFT(t131);
+
+  t140 = (t164 * 2) - t131;
+
+  /* 21 */ lo[ 5][slot] = SHIFT(t140);
+
+  t174 = (MUL(t136 - t137, costab16) * 2) - t138;
+
+  t155 = (t174 * 2) - t139;
+
+  t147 = (t155 * 2) - t140;
+
+  /* 23 */ lo[ 7][slot] = SHIFT(t147);
+
+  t156 = (((MUL(t144 - t145, costab16) * 2) - t146) * 2) - t147;
+
+  /* 25 */ lo[ 9][slot] = SHIFT(t156);
+
+  t175 = (((MUL(t152 - t153, costab16) * 2) - t154) * 2) - t155;
+
+  t165 = (t175 * 2) - t156;
+
+  /* 27 */ lo[11][slot] = SHIFT(t165);
+
+  t176 = (((((MUL(t161 - t162, costab16) * 2) -
+	     t163) * 2) - t164) * 2) - t165;
+
+  /* 29 */ lo[13][slot] = SHIFT(t176);
+  /* 31 */ lo[15][slot] =
+	     SHIFT((((((((MUL(t171 - t172, costab16) * 2) -
+			 t173) * 2) - t174) * 2) - t175) * 2) - t176);
+
+  /*
+   * Totals:
+   *  80 multiplies
+   *  80 additions
+   * 119 subtractions
+   *  49 shifts (not counting SSO)
+   */
+}
+
+# undef MUL
+# undef SHIFT
+
+/* third SSO shift and/or D[] optimization preshift */
+
+# if defined(OPT_SSO)
+#  if MAD_F_FRACBITS != 28
+#   error "MAD_F_FRACBITS must be 28 to use OPT_SSO"
+#  endif
+#  define ML0(hi, lo, x, y)	((lo)  = (x) * (y))
+#  define MLA(hi, lo, x, y)	((lo) += (x) * (y))
+#  define MLN(hi, lo)		((lo)  = -(lo))
+#  define MLZ(hi, lo)		((void) (hi), (mad_fixed_t) (lo))
+#  define SHIFT(x)		((x) >> 2)
+#  define PRESHIFT(x)		((MAD_F(x) + (1L << 13)) >> 14)
+# else
+#  define ML0(hi, lo, x, y)	MAD_F_ML0((hi), (lo), (x), (y))
+#  define MLA(hi, lo, x, y)	MAD_F_MLA((hi), (lo), (x), (y))
+#  define MLN(hi, lo)		MAD_F_MLN((hi), (lo))
+#  define MLZ(hi, lo)		MAD_F_MLZ((hi), (lo))
+#  define SHIFT(x)		(x)
+#  if defined(MAD_F_SCALEBITS)
+#   undef  MAD_F_SCALEBITS
+#   define MAD_F_SCALEBITS	(MAD_F_FRACBITS - 12)
+#   define PRESHIFT(x)		(MAD_F(x) >> 12)
+#  else
+#   define PRESHIFT(x)		MAD_F(x)
+#  endif
+# endif
+
+static
+mad_fixed_t const D[17][32] = {
+# include "D.dat"
+};
+
+# if defined(ASO_SYNTH)
+void synth_full(struct mad_synth *, struct mad_frame const *,
+		unsigned int, unsigned int);
+# else
+/*
+ * NAME:	synth->full()
+ * DESCRIPTION:	perform full frequency PCM synthesis
+ */
+static
+void synth_full(struct mad_synth *synth, struct mad_frame const *frame,
+		unsigned int nch, unsigned int ns)
+{
+  unsigned int phase, ch, s, sb, pe, po;
+  mad_fixed_t *pcm1, *pcm2, (*filter)[2][2][16][8];
+  mad_fixed_t const (*sbsample)[36][32];
+  register mad_fixed_t (*fe)[8], (*fx)[8], (*fo)[8];
+  register mad_fixed_t const (*Dptr)[32], *ptr;
+  register mad_fixed64hi_t hi;
+  register mad_fixed64lo_t lo;
+
+  for (ch = 0; ch < nch; ++ch) {
+    sbsample = &frame->sbsample[ch];
+    filter   = &synth->filter[ch];
+    phase    = synth->phase;
+    pcm1     = synth->pcm.samples[ch];
+
+    for (s = 0; s < ns; ++s) {
+      dct32((*sbsample)[s], phase >> 1,
+	    (*filter)[0][phase & 1], (*filter)[1][phase & 1]);
+
+      pe = phase & ~1;
+      po = ((phase - 1) & 0xf) | 1;
+
+      /* calculate 32 samples */
+
+      fe = &(*filter)[0][ phase & 1][0];
+      fx = &(*filter)[0][~phase & 1][0];
+      fo = &(*filter)[1][~phase & 1][0];
+
+      Dptr = &D[0];
+
+      ptr = *Dptr + po;
+      ML0(hi, lo, (*fx)[0], ptr[ 0]);
+      MLA(hi, lo, (*fx)[1], ptr[14]);
+      MLA(hi, lo, (*fx)[2], ptr[12]);
+      MLA(hi, lo, (*fx)[3], ptr[10]);
+      MLA(hi, lo, (*fx)[4], ptr[ 8]);
+      MLA(hi, lo, (*fx)[5], ptr[ 6]);
+      MLA(hi, lo, (*fx)[6], ptr[ 4]);
+      MLA(hi, lo, (*fx)[7], ptr[ 2]);
+      MLN(hi, lo);
+
+      ptr = *Dptr + pe;
+      MLA(hi, lo, (*fe)[0], ptr[ 0]);
+      MLA(hi, lo, (*fe)[1], ptr[14]);
+      MLA(hi, lo, (*fe)[2], ptr[12]);
+      MLA(hi, lo, (*fe)[3], ptr[10]);
+      MLA(hi, lo, (*fe)[4], ptr[ 8]);
+      MLA(hi, lo, (*fe)[5], ptr[ 6]);
+      MLA(hi, lo, (*fe)[6], ptr[ 4]);
+      MLA(hi, lo, (*fe)[7], ptr[ 2]);
+
+      *pcm1++ = SHIFT(MLZ(hi, lo));
+
+      pcm2 = pcm1 + 30;
+
+      for (sb = 1; sb < 16; ++sb) {
+	++fe;
+	++Dptr;
+
+	/* D[32 - sb][i] == -D[sb][31 - i] */
+
+	ptr = *Dptr + po;
+	ML0(hi, lo, (*fo)[0], ptr[ 0]);
+	MLA(hi, lo, (*fo)[1], ptr[14]);
+	MLA(hi, lo, (*fo)[2], ptr[12]);
+	MLA(hi, lo, (*fo)[3], ptr[10]);
+	MLA(hi, lo, (*fo)[4], ptr[ 8]);
+	MLA(hi, lo, (*fo)[5], ptr[ 6]);
+	MLA(hi, lo, (*fo)[6], ptr[ 4]);
+	MLA(hi, lo, (*fo)[7], ptr[ 2]);
+	MLN(hi, lo);
+
+	ptr = *Dptr + pe;
+	MLA(hi, lo, (*fe)[7], ptr[ 2]);
+	MLA(hi, lo, (*fe)[6], ptr[ 4]);
+	MLA(hi, lo, (*fe)[5], ptr[ 6]);
+	MLA(hi, lo, (*fe)[4], ptr[ 8]);
+	MLA(hi, lo, (*fe)[3], ptr[10]);
+	MLA(hi, lo, (*fe)[2], ptr[12]);
+	MLA(hi, lo, (*fe)[1], ptr[14]);
+	MLA(hi, lo, (*fe)[0], ptr[ 0]);
+
+	*pcm1++ = SHIFT(MLZ(hi, lo));
+
+	ptr = *Dptr - pe;
+	ML0(hi, lo, (*fe)[0], ptr[31 - 16]);
+	MLA(hi, lo, (*fe)[1], ptr[31 - 14]);
+	MLA(hi, lo, (*fe)[2], ptr[31 - 12]);
+	MLA(hi, lo, (*fe)[3], ptr[31 - 10]);
+	MLA(hi, lo, (*fe)[4], ptr[31 -  8]);
+	MLA(hi, lo, (*fe)[5], ptr[31 -  6]);
+	MLA(hi, lo, (*fe)[6], ptr[31 -  4]);
+	MLA(hi, lo, (*fe)[7], ptr[31 -  2]);
+
+	ptr = *Dptr - po;
+	MLA(hi, lo, (*fo)[7], ptr[31 -  2]);
+	MLA(hi, lo, (*fo)[6], ptr[31 -  4]);
+	MLA(hi, lo, (*fo)[5], ptr[31 -  6]);
+	MLA(hi, lo, (*fo)[4], ptr[31 -  8]);
+	MLA(hi, lo, (*fo)[3], ptr[31 - 10]);
+	MLA(hi, lo, (*fo)[2], ptr[31 - 12]);
+	MLA(hi, lo, (*fo)[1], ptr[31 - 14]);
+	MLA(hi, lo, (*fo)[0], ptr[31 - 16]);
+
+	*pcm2-- = SHIFT(MLZ(hi, lo));
+
+	++fo;
+      }
+
+      ++Dptr;
+
+      ptr = *Dptr + po;
+      ML0(hi, lo, (*fo)[0], ptr[ 0]);
+      MLA(hi, lo, (*fo)[1], ptr[14]);
+      MLA(hi, lo, (*fo)[2], ptr[12]);
+      MLA(hi, lo, (*fo)[3], ptr[10]);
+      MLA(hi, lo, (*fo)[4], ptr[ 8]);
+      MLA(hi, lo, (*fo)[5], ptr[ 6]);
+      MLA(hi, lo, (*fo)[6], ptr[ 4]);
+      MLA(hi, lo, (*fo)[7], ptr[ 2]);
+
+      *pcm1 = SHIFT(-MLZ(hi, lo));
+      pcm1 += 16;
+
+      phase = (phase + 1) % 16;
+    }
+  }
+}
+# endif
+
+/*
+ * NAME:	synth->half()
+ * DESCRIPTION:	perform half frequency PCM synthesis
+ */
+static
+void synth_half(struct mad_synth *synth, struct mad_frame const *frame,
+		unsigned int nch, unsigned int ns)
+{
+  unsigned int phase, ch, s, sb, pe, po;
+  mad_fixed_t *pcm1, *pcm2, (*filter)[2][2][16][8];
+  mad_fixed_t const (*sbsample)[36][32];
+  register mad_fixed_t (*fe)[8], (*fx)[8], (*fo)[8];
+  register mad_fixed_t const (*Dptr)[32], *ptr;
+  register mad_fixed64hi_t hi;
+  register mad_fixed64lo_t lo;
+
+  for (ch = 0; ch < nch; ++ch) {
+    sbsample = &frame->sbsample[ch];
+    filter   = &synth->filter[ch];
+    phase    = synth->phase;
+    pcm1     = synth->pcm.samples[ch];
+
+    for (s = 0; s < ns; ++s) {
+      dct32((*sbsample)[s], phase >> 1,
+	    (*filter)[0][phase & 1], (*filter)[1][phase & 1]);
+
+      pe = phase & ~1;
+      po = ((phase - 1) & 0xf) | 1;
+
+      /* calculate 16 samples */
+
+      fe = &(*filter)[0][ phase & 1][0];
+      fx = &(*filter)[0][~phase & 1][0];
+      fo = &(*filter)[1][~phase & 1][0];
+
+      Dptr = &D[0];
+
+      ptr = *Dptr + po;
+      ML0(hi, lo, (*fx)[0], ptr[ 0]);
+      MLA(hi, lo, (*fx)[1], ptr[14]);
+      MLA(hi, lo, (*fx)[2], ptr[12]);
+      MLA(hi, lo, (*fx)[3], ptr[10]);
+      MLA(hi, lo, (*fx)[4], ptr[ 8]);
+      MLA(hi, lo, (*fx)[5], ptr[ 6]);
+      MLA(hi, lo, (*fx)[6], ptr[ 4]);
+      MLA(hi, lo, (*fx)[7], ptr[ 2]);
+      MLN(hi, lo);
+
+      ptr = *Dptr + pe;
+      MLA(hi, lo, (*fe)[0], ptr[ 0]);
+      MLA(hi, lo, (*fe)[1], ptr[14]);
+      MLA(hi, lo, (*fe)[2], ptr[12]);
+      MLA(hi, lo, (*fe)[3], ptr[10]);
+      MLA(hi, lo, (*fe)[4], ptr[ 8]);
+      MLA(hi, lo, (*fe)[5], ptr[ 6]);
+      MLA(hi, lo, (*fe)[6], ptr[ 4]);
+      MLA(hi, lo, (*fe)[7], ptr[ 2]);
+
+      *pcm1++ = SHIFT(MLZ(hi, lo));
+
+      pcm2 = pcm1 + 14;
+
+      for (sb = 1; sb < 16; ++sb) {
+	++fe;
+	++Dptr;
+
+	/* D[32 - sb][i] == -D[sb][31 - i] */
+
+	if (!(sb & 1)) {
+	  ptr = *Dptr + po;
+	  ML0(hi, lo, (*fo)[0], ptr[ 0]);
+	  MLA(hi, lo, (*fo)[1], ptr[14]);
+	  MLA(hi, lo, (*fo)[2], ptr[12]);
+	  MLA(hi, lo, (*fo)[3], ptr[10]);
+	  MLA(hi, lo, (*fo)[4], ptr[ 8]);
+	  MLA(hi, lo, (*fo)[5], ptr[ 6]);
+	  MLA(hi, lo, (*fo)[6], ptr[ 4]);
+	  MLA(hi, lo, (*fo)[7], ptr[ 2]);
+	  MLN(hi, lo);
+
+	  ptr = *Dptr + pe;
+	  MLA(hi, lo, (*fe)[7], ptr[ 2]);
+	  MLA(hi, lo, (*fe)[6], ptr[ 4]);
+	  MLA(hi, lo, (*fe)[5], ptr[ 6]);
+	  MLA(hi, lo, (*fe)[4], ptr[ 8]);
+	  MLA(hi, lo, (*fe)[3], ptr[10]);
+	  MLA(hi, lo, (*fe)[2], ptr[12]);
+	  MLA(hi, lo, (*fe)[1], ptr[14]);
+	  MLA(hi, lo, (*fe)[0], ptr[ 0]);
+
+	  *pcm1++ = SHIFT(MLZ(hi, lo));
+
+	  ptr = *Dptr - po;
+	  ML0(hi, lo, (*fo)[7], ptr[31 -  2]);
+	  MLA(hi, lo, (*fo)[6], ptr[31 -  4]);
+	  MLA(hi, lo, (*fo)[5], ptr[31 -  6]);
+	  MLA(hi, lo, (*fo)[4], ptr[31 -  8]);
+	  MLA(hi, lo, (*fo)[3], ptr[31 - 10]);
+	  MLA(hi, lo, (*fo)[2], ptr[31 - 12]);
+	  MLA(hi, lo, (*fo)[1], ptr[31 - 14]);
+	  MLA(hi, lo, (*fo)[0], ptr[31 - 16]);
+
+	  ptr = *Dptr - pe;
+	  MLA(hi, lo, (*fe)[0], ptr[31 - 16]);
+	  MLA(hi, lo, (*fe)[1], ptr[31 - 14]);
+	  MLA(hi, lo, (*fe)[2], ptr[31 - 12]);
+	  MLA(hi, lo, (*fe)[3], ptr[31 - 10]);
+	  MLA(hi, lo, (*fe)[4], ptr[31 -  8]);
+	  MLA(hi, lo, (*fe)[5], ptr[31 -  6]);
+	  MLA(hi, lo, (*fe)[6], ptr[31 -  4]);
+	  MLA(hi, lo, (*fe)[7], ptr[31 -  2]);
+
+	  *pcm2-- = SHIFT(MLZ(hi, lo));
+	}
+
+	++fo;
+      }
+
+      ++Dptr;
+
+      ptr = *Dptr + po;
+      ML0(hi, lo, (*fo)[0], ptr[ 0]);
+      MLA(hi, lo, (*fo)[1], ptr[14]);
+      MLA(hi, lo, (*fo)[2], ptr[12]);
+      MLA(hi, lo, (*fo)[3], ptr[10]);
+      MLA(hi, lo, (*fo)[4], ptr[ 8]);
+      MLA(hi, lo, (*fo)[5], ptr[ 6]);
+      MLA(hi, lo, (*fo)[6], ptr[ 4]);
+      MLA(hi, lo, (*fo)[7], ptr[ 2]);
+
+      *pcm1 = SHIFT(-MLZ(hi, lo));
+      pcm1 += 8;
+
+      phase = (phase + 1) % 16;
+    }
+  }
+}
+
+/*
+ * NAME:	synth->frame()
+ * DESCRIPTION:	perform PCM synthesis of frame subband samples
+ */
+void mad_synth_frame(struct mad_synth *synth, struct mad_frame const *frame)
+{
+  unsigned int nch, ns;
+  void (*synth_frame)(struct mad_synth *, struct mad_frame const *,
+		      unsigned int, unsigned int);
+
+  nch = MAD_NCHANNELS(&frame->header);
+  ns  = MAD_NSBSAMPLES(&frame->header);
+
+  synth->pcm.samplerate = frame->header.samplerate;
+  synth->pcm.channels   = nch;
+  synth->pcm.length     = 32 * ns;
+
+  synth_frame = synth_full;
+
+  if (frame->options & MAD_OPTION_HALFSAMPLERATE) {
+    synth->pcm.samplerate /= 2;
+    synth->pcm.length     /= 2;
+
+    synth_frame = synth_half;
+  }
+
+  synth_frame(synth, frame, nch, ns);
+
+  synth->phase = (synth->phase + ns) % 16;
+}

code/libmad-0.15.1b/synth.h

@@ -0,0 +1,69 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: synth.h,v 1.15 2004/01/23 09:41:33 rob Exp $
+ */
+
+# ifndef LIBMAD_SYNTH_H
+# define LIBMAD_SYNTH_H
+
+# include "fixed.h"
+# include "frame.h"
+
+struct mad_pcm {
+  unsigned int samplerate;		/* sampling frequency (Hz) */
+  unsigned short channels;		/* number of channels */
+  unsigned short length;		/* number of samples per channel */
+  mad_fixed_t samples[2][1152];		/* PCM output samples [ch][sample] */
+};
+
+struct mad_synth {
+  mad_fixed_t filter[2][2][2][16][8];	/* polyphase filterbank outputs */
+  					/* [ch][eo][peo][s][v] */
+
+  unsigned int phase;			/* current processing phase */
+
+  struct mad_pcm pcm;			/* PCM output */
+};
+
+/* single channel PCM selector */
+enum {
+  MAD_PCM_CHANNEL_SINGLE = 0
+};
+
+/* dual channel PCM selector */
+enum {
+  MAD_PCM_CHANNEL_DUAL_1 = 0,
+  MAD_PCM_CHANNEL_DUAL_2 = 1
+};
+
+/* stereo PCM selector */
+enum {
+  MAD_PCM_CHANNEL_STEREO_LEFT  = 0,
+  MAD_PCM_CHANNEL_STEREO_RIGHT = 1
+};
+
+void mad_synth_init(struct mad_synth *);
+
+# define mad_synth_finish(synth)  /* nothing */
+
+void mad_synth_mute(struct mad_synth *);
+
+void mad_synth_frame(struct mad_synth *, struct mad_frame const *);
+
+# endif

code/libmad-0.15.1b/timer.c

@@ -0,0 +1,485 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: timer.c,v 1.18 2004/01/23 09:41:33 rob Exp $
+ */
+
+# if 1 //ifdef HAVE_CONFIG_H
+#  include "config.h"
+# endif
+
+# include "global.h"
+
+# include <stdio.h>
+
+# ifdef HAVE_ASSERT_H
+#  include <assert.h>
+# endif
+
+# include "timer.h"
+
+mad_timer_t const mad_timer_zero = { 0, 0 };
+
+/*
+ * NAME:	timer->compare()
+ * DESCRIPTION:	indicate relative order of two timers
+ */
+int mad_timer_compare(mad_timer_t timer1, mad_timer_t timer2)
+{
+  signed long diff;
+
+  diff = timer1.seconds - timer2.seconds;
+  if (diff < 0)
+    return -1;
+  else if (diff > 0)
+    return +1;
+
+  diff = timer1.fraction - timer2.fraction;
+  if (diff < 0)
+    return -1;
+  else if (diff > 0)
+    return +1;
+
+  return 0;
+}
+
+/*
+ * NAME:	timer->negate()
+ * DESCRIPTION:	invert the sign of a timer
+ */
+void mad_timer_negate(mad_timer_t *timer)
+{
+  timer->seconds = -timer->seconds;
+
+  if (timer->fraction) {
+    timer->seconds -= 1;
+    timer->fraction = MAD_TIMER_RESOLUTION - timer->fraction;
+  }
+}
+
+/*
+ * NAME:	timer->abs()
+ * DESCRIPTION:	return the absolute value of a timer
+ */
+mad_timer_t mad_timer_abs(mad_timer_t timer)
+{
+  if (timer.seconds < 0)
+    mad_timer_negate(&timer);
+
+  return timer;
+}
+
+/*
+ * NAME:	reduce_timer()
+ * DESCRIPTION:	carry timer fraction into seconds
+ */
+static
+void reduce_timer(mad_timer_t *timer)
+{
+  timer->seconds  += timer->fraction / MAD_TIMER_RESOLUTION;
+  timer->fraction %= MAD_TIMER_RESOLUTION;
+}
+
+/*
+ * NAME:	gcd()
+ * DESCRIPTION:	compute greatest common denominator
+ */
+static
+unsigned long gcd(unsigned long num1, unsigned long num2)
+{
+  unsigned long tmp;
+
+  while (num2) {
+    tmp  = num2;
+    num2 = num1 % num2;
+    num1 = tmp;
+  }
+
+  return num1;
+}
+
+/*
+ * NAME:	reduce_rational()
+ * DESCRIPTION:	convert rational expression to lowest terms
+ */
+static
+void reduce_rational(unsigned long *numer, unsigned long *denom)
+{
+  unsigned long factor;
+
+  factor = gcd(*numer, *denom);
+
+  assert(factor != 0);
+
+  *numer /= factor;
+  *denom /= factor;
+}
+
+/*
+ * NAME:	scale_rational()
+ * DESCRIPTION:	solve numer/denom == ?/scale avoiding overflowing
+ */
+static
+unsigned long scale_rational(unsigned long numer, unsigned long denom,
+			     unsigned long scale)
+{
+  reduce_rational(&numer, &denom);
+  reduce_rational(&scale, &denom);
+
+  assert(denom != 0);
+
+  if (denom < scale)
+    return numer * (scale / denom) + numer * (scale % denom) / denom;
+  if (denom < numer)
+    return scale * (numer / denom) + scale * (numer % denom) / denom;
+
+  return numer * scale / denom;
+}
+
+/*
+ * NAME:	timer->set()
+ * DESCRIPTION:	set timer to specific (positive) value
+ */
+void mad_timer_set(mad_timer_t *timer, unsigned long seconds,
+		   unsigned long numer, unsigned long denom)
+{
+  timer->seconds = seconds;
+  if (numer >= denom && denom > 0) {
+    timer->seconds += numer / denom;
+    numer %= denom;
+  }
+
+  switch (denom) {
+  case 0:
+  case 1:
+    timer->fraction = 0;
+    break;
+
+  case MAD_TIMER_RESOLUTION:
+    timer->fraction = numer;
+    break;
+
+  case 1000:
+    timer->fraction = numer * (MAD_TIMER_RESOLUTION /  1000);
+    break;
+
+  case 8000:
+    timer->fraction = numer * (MAD_TIMER_RESOLUTION /  8000);
+    break;
+
+  case 11025:
+    timer->fraction = numer * (MAD_TIMER_RESOLUTION / 11025);
+    break;
+
+  case 12000:
+    timer->fraction = numer * (MAD_TIMER_RESOLUTION / 12000);
+    break;
+
+  case 16000:
+    timer->fraction = numer * (MAD_TIMER_RESOLUTION / 16000);
+    break;
+
+  case 22050:
+    timer->fraction = numer * (MAD_TIMER_RESOLUTION / 22050);
+    break;
+
+  case 24000:
+    timer->fraction = numer * (MAD_TIMER_RESOLUTION / 24000);
+    break;
+
+  case 32000:
+    timer->fraction = numer * (MAD_TIMER_RESOLUTION / 32000);
+    break;
+
+  case 44100:
+    timer->fraction = numer * (MAD_TIMER_RESOLUTION / 44100);
+    break;
+
+  case 48000:
+    timer->fraction = numer * (MAD_TIMER_RESOLUTION / 48000);
+    break;
+
+  default:
+    timer->fraction = scale_rational(numer, denom, MAD_TIMER_RESOLUTION);
+    break;
+  }
+
+  if (timer->fraction >= MAD_TIMER_RESOLUTION)
+    reduce_timer(timer);
+}
+
+/*
+ * NAME:	timer->add()
+ * DESCRIPTION:	add one timer to another
+ */
+void mad_timer_add(mad_timer_t *timer, mad_timer_t incr)
+{
+  timer->seconds  += incr.seconds;
+  timer->fraction += incr.fraction;
+
+  if (timer->fraction >= MAD_TIMER_RESOLUTION)
+    reduce_timer(timer);
+}
+
+/*
+ * NAME:	timer->multiply()
+ * DESCRIPTION:	multiply a timer by a scalar value
+ */
+void mad_timer_multiply(mad_timer_t *timer, signed long scalar)
+{
+  mad_timer_t addend;
+  unsigned long factor;
+
+  factor = scalar;
+  if (scalar < 0) {
+    factor = -scalar;
+    mad_timer_negate(timer);
+  }
+
+  addend = *timer;
+  *timer = mad_timer_zero;
+
+  while (factor) {
+    if (factor & 1)
+      mad_timer_add(timer, addend);
+
+    mad_timer_add(&addend, addend);
+    factor >>= 1;
+  }
+}
+
+/*
+ * NAME:	timer->count()
+ * DESCRIPTION:	return timer value in selected units
+ */
+signed long mad_timer_count(mad_timer_t timer, enum mad_units units)
+{
+  switch (units) {
+  case MAD_UNITS_HOURS:
+    return timer.seconds / 60 / 60;
+
+  case MAD_UNITS_MINUTES:
+    return timer.seconds / 60;
+
+  case MAD_UNITS_SECONDS:
+    return timer.seconds;
+
+  case MAD_UNITS_DECISECONDS:
+  case MAD_UNITS_CENTISECONDS:
+  case MAD_UNITS_MILLISECONDS:
+
+  case MAD_UNITS_8000_HZ:
+  case MAD_UNITS_11025_HZ:
+  case MAD_UNITS_12000_HZ:
+  case MAD_UNITS_16000_HZ:
+  case MAD_UNITS_22050_HZ:
+  case MAD_UNITS_24000_HZ:
+  case MAD_UNITS_32000_HZ:
+  case MAD_UNITS_44100_HZ:
+  case MAD_UNITS_48000_HZ:
+
+  case MAD_UNITS_24_FPS:
+  case MAD_UNITS_25_FPS:
+  case MAD_UNITS_30_FPS:
+  case MAD_UNITS_48_FPS:
+  case MAD_UNITS_50_FPS:
+  case MAD_UNITS_60_FPS:
+  case MAD_UNITS_75_FPS:
+    return timer.seconds * (signed long) units +
+      (signed long) scale_rational(timer.fraction, MAD_TIMER_RESOLUTION,
+				   units);
+
+  case MAD_UNITS_23_976_FPS:
+  case MAD_UNITS_24_975_FPS:
+  case MAD_UNITS_29_97_FPS:
+  case MAD_UNITS_47_952_FPS:
+  case MAD_UNITS_49_95_FPS:
+  case MAD_UNITS_59_94_FPS:
+    return (mad_timer_count(timer, -units) + 1) * 1000 / 1001;
+  }
+
+  /* unsupported units */
+  return 0;
+}
+
+/*
+ * NAME:	timer->fraction()
+ * DESCRIPTION:	return fractional part of timer in arbitrary terms
+ */
+unsigned long mad_timer_fraction(mad_timer_t timer, unsigned long denom)
+{
+  timer = mad_timer_abs(timer);
+
+  switch (denom) {
+  case 0:
+    return timer.fraction ?
+      MAD_TIMER_RESOLUTION / timer.fraction : MAD_TIMER_RESOLUTION + 1;
+
+  case MAD_TIMER_RESOLUTION:
+    return timer.fraction;
+
+  default:
+    return scale_rational(timer.fraction, MAD_TIMER_RESOLUTION, denom);
+  }
+}
+
+/*
+ * NAME:	timer->string()
+ * DESCRIPTION:	write a string representation of a timer using a template
+ */
+void mad_timer_string(mad_timer_t timer,
+		      char *dest, char const *format, enum mad_units units,
+		      enum mad_units fracunits, unsigned long subparts)
+{
+  unsigned long hours, minutes, seconds, sub;
+  unsigned int frac;
+
+  timer = mad_timer_abs(timer);
+
+  seconds = timer.seconds;
+  frac = sub = 0;
+
+  switch (fracunits) {
+  case MAD_UNITS_HOURS:
+  case MAD_UNITS_MINUTES:
+  case MAD_UNITS_SECONDS:
+    break;
+
+  case MAD_UNITS_DECISECONDS:
+  case MAD_UNITS_CENTISECONDS:
+  case MAD_UNITS_MILLISECONDS:
+
+  case MAD_UNITS_8000_HZ:
+  case MAD_UNITS_11025_HZ:
+  case MAD_UNITS_12000_HZ:
+  case MAD_UNITS_16000_HZ:
+  case MAD_UNITS_22050_HZ:
+  case MAD_UNITS_24000_HZ:
+  case MAD_UNITS_32000_HZ:
+  case MAD_UNITS_44100_HZ:
+  case MAD_UNITS_48000_HZ:
+
+  case MAD_UNITS_24_FPS:
+  case MAD_UNITS_25_FPS:
+  case MAD_UNITS_30_FPS:
+  case MAD_UNITS_48_FPS:
+  case MAD_UNITS_50_FPS:
+  case MAD_UNITS_60_FPS:
+  case MAD_UNITS_75_FPS:
+    {
+      unsigned long denom;
+
+      denom = MAD_TIMER_RESOLUTION / fracunits;
+
+      frac = timer.fraction / denom;
+      sub  = scale_rational(timer.fraction % denom, denom, subparts);
+    }
+    break;
+
+  case MAD_UNITS_23_976_FPS:
+  case MAD_UNITS_24_975_FPS:
+  case MAD_UNITS_29_97_FPS:
+  case MAD_UNITS_47_952_FPS:
+  case MAD_UNITS_49_95_FPS:
+  case MAD_UNITS_59_94_FPS:
+    /* drop-frame encoding */
+    /* N.B. this is only well-defined for MAD_UNITS_29_97_FPS */
+    {
+      unsigned long frame, cycle, d, m;
+
+      frame = mad_timer_count(timer, fracunits);
+
+      cycle = -fracunits * 60 * 10 - (10 - 1) * 2;
+
+      d = frame / cycle;
+      m = frame % cycle;
+      frame += (10 - 1) * 2 * d;
+      if (m > 2)
+	frame += 2 * ((m - 2) / (cycle / 10));
+
+      frac    = frame % -fracunits;
+      seconds = frame / -fracunits;
+    }
+    break;
+  }
+
+  switch (units) {
+  case MAD_UNITS_HOURS:
+    minutes = seconds / 60;
+    hours   = minutes / 60;
+
+    sprintf(dest, format,
+	    hours,
+	    (unsigned int) (minutes % 60),
+	    (unsigned int) (seconds % 60),
+	    frac, sub);
+    break;
+
+  case MAD_UNITS_MINUTES:
+    minutes = seconds / 60;
+
+    sprintf(dest, format,
+	    minutes,
+	    (unsigned int) (seconds % 60),
+	    frac, sub);
+    break;
+
+  case MAD_UNITS_SECONDS:
+    sprintf(dest, format,
+	    seconds,
+	    frac, sub);
+    break;
+
+  case MAD_UNITS_23_976_FPS:
+  case MAD_UNITS_24_975_FPS:
+  case MAD_UNITS_29_97_FPS:
+  case MAD_UNITS_47_952_FPS:
+  case MAD_UNITS_49_95_FPS:
+  case MAD_UNITS_59_94_FPS:
+    if (fracunits < 0) {
+      /* not yet implemented */
+      sub = 0;
+    }
+
+    /* fall through */
+
+  case MAD_UNITS_DECISECONDS:
+  case MAD_UNITS_CENTISECONDS:
+  case MAD_UNITS_MILLISECONDS:
+
+  case MAD_UNITS_8000_HZ:
+  case MAD_UNITS_11025_HZ:
+  case MAD_UNITS_12000_HZ:
+  case MAD_UNITS_16000_HZ:
+  case MAD_UNITS_22050_HZ:
+  case MAD_UNITS_24000_HZ:
+  case MAD_UNITS_32000_HZ:
+  case MAD_UNITS_44100_HZ:
+  case MAD_UNITS_48000_HZ:
+
+  case MAD_UNITS_24_FPS:
+  case MAD_UNITS_25_FPS:
+  case MAD_UNITS_30_FPS:
+  case MAD_UNITS_48_FPS:
+  case MAD_UNITS_50_FPS:
+  case MAD_UNITS_60_FPS:
+  case MAD_UNITS_75_FPS:
+    sprintf(dest, format, mad_timer_count(timer, units), sub);
+    break;
+  }
+}

code/libmad-0.15.1b/timer.h

@@ -0,0 +1,100 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: timer.h,v 1.16 2004/01/23 09:41:33 rob Exp $
+ */
+
+# ifndef LIBMAD_TIMER_H
+# define LIBMAD_TIMER_H
+
+typedef struct {
+  signed long seconds;		/* whole seconds */
+  unsigned long fraction;	/* 1/MAD_TIMER_RESOLUTION seconds */
+} mad_timer_t;
+
+extern mad_timer_t const mad_timer_zero;
+
+# define MAD_TIMER_RESOLUTION	352800000UL
+
+enum mad_units {
+  MAD_UNITS_HOURS	 =    -2,
+  MAD_UNITS_MINUTES	 =    -1,
+  MAD_UNITS_SECONDS	 =     0,
+
+  /* metric units */
+
+  MAD_UNITS_DECISECONDS	 =    10,
+  MAD_UNITS_CENTISECONDS =   100,
+  MAD_UNITS_MILLISECONDS =  1000,
+
+  /* audio sample units */
+
+  MAD_UNITS_8000_HZ	 =  8000,
+  MAD_UNITS_11025_HZ	 = 11025,
+  MAD_UNITS_12000_HZ	 = 12000,
+
+  MAD_UNITS_16000_HZ	 = 16000,
+  MAD_UNITS_22050_HZ	 = 22050,
+  MAD_UNITS_24000_HZ	 = 24000,
+
+  MAD_UNITS_32000_HZ	 = 32000,
+  MAD_UNITS_44100_HZ	 = 44100,
+  MAD_UNITS_48000_HZ	 = 48000,
+
+  /* video frame/field units */
+
+  MAD_UNITS_24_FPS	 =    24,
+  MAD_UNITS_25_FPS	 =    25,
+  MAD_UNITS_30_FPS	 =    30,
+  MAD_UNITS_48_FPS	 =    48,
+  MAD_UNITS_50_FPS	 =    50,
+  MAD_UNITS_60_FPS	 =    60,
+
+  /* CD audio frames */
+
+  MAD_UNITS_75_FPS	 =    75,
+
+  /* video drop-frame units */
+
+  MAD_UNITS_23_976_FPS	 =   -24,
+  MAD_UNITS_24_975_FPS	 =   -25,
+  MAD_UNITS_29_97_FPS	 =   -30,
+  MAD_UNITS_47_952_FPS	 =   -48,
+  MAD_UNITS_49_95_FPS	 =   -50,
+  MAD_UNITS_59_94_FPS	 =   -60
+};
+
+# define mad_timer_reset(timer)	((void) (*(timer) = mad_timer_zero))
+
+int mad_timer_compare(mad_timer_t, mad_timer_t);
+
+# define mad_timer_sign(timer)	mad_timer_compare((timer), mad_timer_zero)
+
+void mad_timer_negate(mad_timer_t *);
+mad_timer_t mad_timer_abs(mad_timer_t);
+
+void mad_timer_set(mad_timer_t *, unsigned long, unsigned long, unsigned long);
+void mad_timer_add(mad_timer_t *, mad_timer_t);
+void mad_timer_multiply(mad_timer_t *, signed long);
+
+signed long mad_timer_count(mad_timer_t, enum mad_units);
+unsigned long mad_timer_fraction(mad_timer_t, unsigned long);
+void mad_timer_string(mad_timer_t, char *, char const *,
+		      enum mad_units, enum mad_units, unsigned long);
+
+# endif

code/libmad-0.15.1b/version.c

@@ -0,0 +1,91 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: version.c,v 1.15 2004/01/23 09:41:33 rob Exp $
+ */
+
+# if 1 //ifdef HAVE_CONFIG_H
+#  include "config.h"
+# endif
+
+# include "global.h"
+
+# include "version.h"
+
+char const mad_version[]   = "MPEG Audio Decoder " MAD_VERSION;
+char const mad_copyright[] = "Copyright (C) " MAD_PUBLISHYEAR " " MAD_AUTHOR;
+char const mad_author[]    = MAD_AUTHOR " <" MAD_EMAIL ">";
+
+char const mad_build[] = ""
+# if defined(DEBUG)
+  "DEBUG "
+# elif defined(NDEBUG)
+  "NDEBUG "
+# endif
+
+# if defined(EXPERIMENTAL)
+  "EXPERIMENTAL "
+# endif
+
+# if defined(FPM_64BIT)
+  "FPM_64BIT "
+# elif defined(FPM_INTEL)
+  "FPM_INTEL "
+# elif defined(FPM_ARM)
+  "FPM_ARM "
+# elif defined(FPM_MIPS)
+  "FPM_MIPS "
+# elif defined(FPM_SPARC)
+  "FPM_SPARC "
+# elif defined(FPM_PPC)
+  "FPM_PPC "
+# elif defined(FPM_DEFAULT)
+  "FPM_DEFAULT "
+# endif
+
+# if defined(ASO_IMDCT)
+  "ASO_IMDCT "
+# endif
+# if defined(ASO_INTERLEAVE1)
+  "ASO_INTERLEAVE1 "
+# endif
+# if defined(ASO_INTERLEAVE2)
+  "ASO_INTERLEAVE2 "
+# endif
+# if defined(ASO_ZEROCHECK)
+  "ASO_ZEROCHECK "
+# endif
+
+# if defined(OPT_SPEED)
+  "OPT_SPEED "
+# elif defined(OPT_ACCURACY)
+  "OPT_ACCURACY "
+# endif
+
+# if defined(OPT_SSO)
+  "OPT_SSO "
+# endif
+
+# if defined(OPT_DCTO)  /* never defined here */
+  "OPT_DCTO "
+# endif
+
+# if defined(OPT_STRICT)
+  "OPT_STRICT "
+# endif
+;

code/libmad-0.15.1b/version.h

@@ -0,0 +1,47 @@
+/*
+ * libmad - MPEG audio decoder library
+ * Copyright (C) 2000-2004 Underbit Technologies, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * $Id: version.h,v 1.26 2004/01/23 09:41:33 rob Exp $
+ */
+
+# ifndef LIBMAD_VERSION_H
+# define LIBMAD_VERSION_H
+
+# define MAD_VERSION_MAJOR	0
+# define MAD_VERSION_MINOR	15
+# define MAD_VERSION_PATCH	1
+# define MAD_VERSION_EXTRA	" (beta)"
+
+# define MAD_VERSION_STRINGIZE(str)	#str
+# define MAD_VERSION_STRING(num)	MAD_VERSION_STRINGIZE(num)
+
+# define MAD_VERSION		MAD_VERSION_STRING(MAD_VERSION_MAJOR) "."  \
+				MAD_VERSION_STRING(MAD_VERSION_MINOR) "."  \
+				MAD_VERSION_STRING(MAD_VERSION_PATCH)  \
+				MAD_VERSION_EXTRA
+
+# define MAD_PUBLISHYEAR	"2000-2004"
+# define MAD_AUTHOR		"Underbit Technologies, Inc."
+# define MAD_EMAIL		"info@underbit.com"
+
+extern char const mad_version[];
+extern char const mad_copyright[];
+extern char const mad_author[];
+extern char const mad_build[];
+
+# endif