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16d18c707a
already playing on the channel, it should stop it with finish_note(), not kill_note(). This can be clearly heard in the final cymbal crashes of D_DM2TTL where TiMidity cuts them off because the final cymbals are played with a velocity of 1 before the preceding cymbals have finished. (I wonder if I should be setting the self_nonexclusive flag for GUS patches to disable even this behavior, though, since gf1note.c doesn't turn off duplicate notes.) - Changed envelope handling to hopefully match the GUS player's. The most egregious mistake TiMidity makes is to treat bit 6 as an envelope enable bit. This is not what it does; every sample has an envelope. Rather, this is a "no sampled release" flag. Also, despite fiddling with the PATCH_SUSTAIN flag during instrument loading, TiMidity never actually used it. Nor did it do anything at all with the PATCH_FAST_REL flag. SVN r934 (trunk)
615 lines
14 KiB
C++
615 lines
14 KiB
C++
/*
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TiMidity -- Experimental MIDI to WAVE converter
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Copyright (C) 1995 Tuukka Toivonen <toivonen@clinet.fi>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef TIMIDITY_H
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#define TIMIDITY_H
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#include "doomtype.h"
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#include "zstring.h"
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class FileReader;
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namespace Timidity
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{
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/*
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config.h
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*/
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/* Acoustic Grand Piano seems to be the usual default instrument. */
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#define DEFAULT_PROGRAM 0
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/* 9 here is MIDI channel 10, which is the standard percussion channel.
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Some files (notably C:\WINDOWS\CANYON.MID) think that 16 is one too.
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On the other hand, some files know that 16 is not a drum channel and
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try to play music on it. This is now a runtime option, so this isn't
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a critical choice anymore. */
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#define DEFAULT_DRUMCHANNELS (1<<9)
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/*#define DEFAULT_DRUMCHANNELS ((1<<9) | (1<<15))*/
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#define MAXCHAN 16
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#define MAXNOTE 128
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/* 1000 here will give a control ratio of 22:1 with 22 kHz output.
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Higher CONTROLS_PER_SECOND values allow more accurate rendering
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of envelopes and tremolo. The cost is CPU time. */
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#define CONTROLS_PER_SECOND 1000
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/* A scalar applied to the final mix to try and approximate the
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volume level of FMOD's built-in MIDI player. */
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#define FINAL_MIX_SCALE 0.5f
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/* How many bits to use for the fractional part of sample positions.
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This affects tonal accuracy. The entire position counter must fit
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in 32 bits, so with FRACTION_BITS equal to 12, the maximum size of
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a sample is 1048576 samples (2 megabytes in memory). The GUS gets
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by with just 9 bits and a little help from its friends...
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"The GUS does not SUCK!!!" -- a happy user :) */
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#define FRACTION_BITS 12
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/* For some reason the sample volume is always set to maximum in all
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patch files. Define this for a crude adjustment that may help
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equalize instrument volumes. */
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//#define ADJUST_SAMPLE_VOLUMES
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/* The number of samples to use for ramping out a dying note. Affects
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click removal. */
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#define MAX_DIE_TIME 20
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/**************************************************************************/
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/* Anything below this shouldn't need to be changed unless you're porting
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to a new machine with other than 32-bit, big-endian words. */
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/**************************************************************************/
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/* change FRACTION_BITS above, not these */
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#define INTEGER_BITS (32 - FRACTION_BITS)
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#define INTEGER_MASK (0xFFFFFFFF << FRACTION_BITS)
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#define FRACTION_MASK (~ INTEGER_MASK)
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#define MAX_SAMPLE_SIZE (1 << INTEGER_BITS)
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/* This is enforced by some computations that must fit in an int */
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#define MAX_CONTROL_RATIO 255
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#define MAX_AMPLIFICATION 800
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/* The TiMiditiy configuration file */
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#define CONFIG_FILE "timidity.cfg"
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typedef float sample_t;
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typedef float final_volume_t;
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#define FINAL_VOLUME(v) (v)
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#define FSCALE(a,b) ((a) * (float)(1<<(b)))
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#define FSCALENEG(a,b) ((a) * (1.0L / (float)(1<<(b))))
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/* Vibrato and tremolo Choices of the Day */
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#define SWEEP_TUNING 38
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#define VIBRATO_AMPLITUDE_TUNING 1.0
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#define VIBRATO_RATE_TUNING 38
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#define TREMOLO_AMPLITUDE_TUNING 1.0
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#define TREMOLO_RATE_TUNING 38
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#define SWEEP_SHIFT 16
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#define RATE_SHIFT 5
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#define VIBRATO_SAMPLE_INCREMENTS 32
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#ifndef PI
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#define PI 3.14159265358979323846
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#endif
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#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
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// [RH] MinGW's pow() function is terribly slow compared to VC8's
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// (I suppose because it's using an old version from MSVCRT.DLL).
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// On an Opteron running x86-64 Linux, this also ended up being about
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// 100 cycles faster than libm's pow(), which is why I'm using this
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// for GCC in general and not just for MinGW.
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extern __inline__ double pow_x87_inline(double x,double y)
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{
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double result;
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if (y == 0)
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{
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return 1;
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}
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if (x == 0)
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{
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if (y > 0)
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{
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return 0;
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}
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else
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{
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union { double fp; long long ip; } infinity;
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infinity.ip = 0x7FF0000000000000ll;
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return infinity.fp;
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}
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}
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__asm__ (
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"fyl2x\n\t"
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"fld %%st(0)\n\t"
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"frndint\n\t"
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"fxch\n\t"
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"fsub %%st(1),%%st(0)\n\t"
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"f2xm1\n\t"
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"fld1\n\t"
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"faddp\n\t"
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"fxch\n\t"
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"fld1\n\t"
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"fscale\n\t"
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"fstp %%st(1)\n\t"
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"fmulp\n\t"
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: "=t" (result)
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: "0" (x), "u" (y)
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: "st(1)", "st(7)", "%3", "%4" );
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return result;
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}
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#define pow pow_x87_inline
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#endif
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/*
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common.h
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*/
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#define OM_FILEORLUMP 0
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#define OM_LUMP 1
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#define OM_FILE 2
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extern void add_to_pathlist(const char *s);
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extern void clear_pathlist();
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extern void *safe_malloc(size_t count);
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FileReader *open_filereader(const char *name, int open, int *plumpnum);
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/*
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controls.h
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*/
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enum
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{
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CMSG_INFO,
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CMSG_WARNING,
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CMSG_ERROR
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};
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enum
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{
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VERB_NORMAL,
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VERB_VERBOSE,
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VERB_NOISY,
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VERB_DEBUG
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};
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void cmsg(int type, int verbosity_level, const char *fmt, ...);
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/*
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instrum.h
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*/
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struct Sample
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{
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SDWORD
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loop_start, loop_end, data_length,
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sample_rate, low_vel, high_vel, low_freq, high_freq, root_freq;
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SDWORD
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envelope_rate[6], envelope_offset[6];
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float
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volume;
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sample_t *data;
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SDWORD
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tremolo_sweep_increment, tremolo_phase_increment,
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vibrato_sweep_increment, vibrato_control_ratio;
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BYTE
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tremolo_depth, vibrato_depth,
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modes;
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WORD
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panning, scale_factor;
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SWORD
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scale_note;
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bool
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self_nonexclusive;
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BYTE
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key_group;
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float
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left_offset, right_offset;
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};
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void convert_sample_data(Sample *sample, const void *data);
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void free_instruments();
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/* Patch definition: */
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enum
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{
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HEADER_SIZE = 12,
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ID_SIZE = 10,
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DESC_SIZE = 60,
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RESERVED_SIZE = 40,
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PATCH_HEADER_RESERVED_SIZE = 36,
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LAYER_RESERVED_SIZE = 40,
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PATCH_DATA_RESERVED_SIZE = 36,
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INST_NAME_SIZE = 16,
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ENVELOPES = 6,
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MAX_LAYERS = 4
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};
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#define GF1_HEADER_TEXT "GF1PATCH110"
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enum
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{
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PATCH_16 = (1<<0),
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PATCH_UNSIGNED = (1<<1),
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PATCH_LOOPEN = (1<<2),
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PATCH_BIDIR = (1<<3),
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PATCH_BACKWARD = (1<<4),
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PATCH_SUSTAIN = (1<<5),
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PATCH_NO_SRELEASE = (1<<6),
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PATCH_FAST_REL = (1<<7)
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};
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#ifdef _MSC_VER
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#pragma pack(push, 1)
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#define GCC_PACKED
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#else
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#define GCC_PACKED __attribute__((__packed__))
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#endif
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struct GF1PatchHeader
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{
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char Header[HEADER_SIZE];
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char GravisID[ID_SIZE]; /* Id = "ID#000002" */
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char Description[DESC_SIZE];
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BYTE Instruments;
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BYTE Voices;
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BYTE Channels;
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WORD WaveForms;
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WORD MasterVolume;
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DWORD DataSize;
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BYTE Reserved[PATCH_HEADER_RESERVED_SIZE];
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} GCC_PACKED;
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struct GF1InstrumentData
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{
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WORD Instrument;
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char InstrumentName[INST_NAME_SIZE];
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int InstrumentSize;
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BYTE Layers;
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BYTE Reserved[RESERVED_SIZE];
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} GCC_PACKED;
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struct GF1LayerData
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{
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BYTE LayerDuplicate;
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BYTE Layer;
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int LayerSize;
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BYTE Samples;
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BYTE Reserved[LAYER_RESERVED_SIZE];
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} GCC_PACKED;
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struct GF1PatchData
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{
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char WaveName[7];
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BYTE Fractions;
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int WaveSize;
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int StartLoop;
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int EndLoop;
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WORD SampleRate;
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int LowFrequency;
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int HighFrequency;
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int RootFrequency;
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SWORD Tune;
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BYTE Balance;
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BYTE EnvelopeRate[ENVELOPES];
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BYTE EnvelopeOffset[ENVELOPES];
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BYTE TremoloSweep;
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BYTE TremoloRate;
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BYTE TremoloDepth;
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BYTE VibratoSweep;
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BYTE VibratoRate;
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BYTE VibratoDepth;
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BYTE Modes;
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SWORD ScaleFrequency;
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WORD ScaleFactor; /* From 0 to 2048 or 0 to 2 */
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BYTE Reserved[PATCH_DATA_RESERVED_SIZE];
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} GCC_PACKED;
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#ifdef _MSC_VER
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#pragma pack(pop)
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#endif
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#undef GCC_PACKED
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enum
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{
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INST_GUS,
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INST_DLS
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};
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struct Instrument
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{
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Instrument();
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~Instrument();
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int type;
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int samples;
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Sample *sample;
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};
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struct ToneBankElement
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{
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ToneBankElement() :
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note(0), amp(0), pan(0), strip_loop(0), strip_envelope(0), strip_tail(0)
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{}
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FString name;
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int note, amp, pan, strip_loop, strip_envelope, strip_tail;
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};
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/* A hack to delay instrument loading until after reading the
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entire MIDI file. */
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#define MAGIC_LOAD_INSTRUMENT ((Instrument *)(-1))
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enum
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{
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MAXPROG = 128,
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MAXBANK = 128
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};
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struct ToneBank
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{
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ToneBank();
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~ToneBank();
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ToneBankElement *tone;
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Instrument *instrument[MAXPROG];
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};
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#define SPECIAL_PROGRAM -1
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extern void pcmap(int *b, int *v, int *p, int *drums);
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/*
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mix.h
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*/
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extern void mix_voice(struct Renderer *song, float *buf, struct Voice *v, int c);
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extern int recompute_envelope(struct Voice *v);
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extern void apply_envelope_to_amp(struct Voice *v);
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/*
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playmidi.h
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*/
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/* Midi events */
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enum
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{
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ME_NOTEOFF = 0x80,
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ME_NOTEON = 0x90,
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ME_KEYPRESSURE = 0xA0,
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ME_CONTROLCHANGE = 0xB0,
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ME_PROGRAM = 0xC0,
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ME_CHANNELPRESSURE = 0xD0,
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ME_PITCHWHEEL = 0xE0
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};
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/* Controllers */
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enum
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{
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CTRL_BANK_SELECT = 0,
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CTRL_DATA_ENTRY = 6,
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CTRL_VOLUME = 7,
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CTRL_PAN = 10,
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CTRL_EXPRESSION = 11,
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CTRL_SUSTAIN = 64,
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CTRL_HARMONICCONTENT = 71,
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CTRL_RELEASETIME = 72,
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CTRL_ATTACKTIME = 73,
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CTRL_BRIGHTNESS = 74,
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CTRL_REVERBERATION = 91,
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CTRL_CHORUSDEPTH = 93,
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CTRL_NRPN_LSB = 98,
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CTRL_NRPN_MSB = 99,
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CTRL_RPN_LSB = 100,
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CTRL_RPN_MSB = 101,
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CTRL_ALL_SOUNDS_OFF = 120,
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CTRL_RESET_CONTROLLERS = 121,
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CTRL_ALL_NOTES_OFF = 123
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};
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/* RPNs */
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enum
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{
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RPN_PITCH_SENS = 0x0000,
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RPN_FINE_TUNING = 0x0001,
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RPN_COARSE_TUNING = 0x0002,
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RPN_RESET = 0x3fff
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};
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struct Channel
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{
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int
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bank, program, sustain, pitchbend,
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mono, /* one note only on this channel */
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pitchsens;
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WORD
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volume, expression;
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SWORD
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panning;
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WORD
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rpn, nrpn;
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bool
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nrpn_mode;
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float
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pitchfactor; /* precomputed pitch bend factor to save some fdiv's */
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float
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left_offset, right_offset; /* precomputed panning values */
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};
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/* Causes the instrument's default panning to be used. */
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#define NO_PANNING -1
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struct Voice
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{
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BYTE
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status, channel, note, velocity;
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Sample *sample;
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float
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orig_frequency, frequency;
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int
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sample_offset, sample_increment,
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envelope_volume, envelope_target, envelope_increment,
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tremolo_sweep, tremolo_sweep_position,
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tremolo_phase, tremolo_phase_increment,
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vibrato_sweep, vibrato_sweep_position;
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final_volume_t left_mix, right_mix;
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float
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attenuation, left_offset, right_offset;
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float
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tremolo_volume;
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int
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vibrato_sample_increment[VIBRATO_SAMPLE_INCREMENTS];
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int
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vibrato_phase, vibrato_control_ratio, vibrato_control_counter,
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envelope_stage, control_counter;
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};
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/* Voice status options: */
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enum
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{
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VOICE_RUNNING = (1<<0),
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VOICE_SUSTAINING = (1<<1),
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VOICE_RELEASING = (1<<2),
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VOICE_STOPPING = (1<<3),
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VOICE_LPE = (1<<4),
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NOTE_SUSTAIN = (1<<5),
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};
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/* Envelope stages: */
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enum
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{
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ATTACK,
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HOLD,
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DECAY,
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RELEASE,
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RELEASEB,
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RELEASEC
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};
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#define ISDRUMCHANNEL(c) ((drumchannels & (1<<(c))))
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/*
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resample.h
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*/
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extern sample_t *resample_voice(struct Renderer *song, Voice *v, int *countptr);
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extern void pre_resample(struct Renderer *song, Sample *sp);
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/*
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tables.h
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*/
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#define sine(x) (sin((2*PI/1024.0) * (x)))
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#define note_to_freq(x) (float(8175.7989473096690661233836992789 * pow(2.0, (x) / 12.0)))
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//#define calc_vol(x) (pow(2.0,((x)*6.0 - 6.0))) // Physically ideal equation
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#define calc_gf1_amp(x) (pow(2.0,((x)*16.0 - 16.0))) // Actual GUS equation
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/*
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timidity.h
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*/
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struct DLS_Data;
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int LoadConfig(const char *filename);
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extern int LoadConfig();
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extern void FreeAll();
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extern ToneBank *tonebank[MAXBANK];
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extern ToneBank *drumset[MAXBANK];
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struct Renderer
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{
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float rate;
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DLS_Data *patches;
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Instrument *default_instrument;
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int default_program;
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int resample_buffer_size;
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sample_t *resample_buffer;
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Channel channel[16];
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Voice *voice;
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int control_ratio, amp_with_poly;
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int drumchannels;
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int adjust_panning_immediately;
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int voices;
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int lost_notes, cut_notes;
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Renderer(float sample_rate);
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~Renderer();
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void HandleEvent(int status, int parm1, int parm2);
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void HandleLongMessage(const BYTE *data, int len);
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void HandleController(int chan, int ctrl, int val);
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void ComputeOutput(float *buffer, int num_samples);
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void MarkInstrument(int bank, int percussion, int instr);
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void Reset();
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int load_missing_instruments();
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int set_default_instrument(const char *name);
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int convert_tremolo_sweep(BYTE sweep);
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int convert_vibrato_sweep(BYTE sweep, int vib_control_ratio);
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int convert_tremolo_rate(BYTE rate);
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int convert_vibrato_rate(BYTE rate);
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|
|
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void recompute_freq(int voice);
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void recompute_amp(Voice *v);
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void recompute_pan(Channel *chan);
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|
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void kill_key_group(int voice);
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float calculate_scaled_frequency(Sample *sample, int note);
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void start_note(int chan, int note, int vel, int voice);
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|
|
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void note_on(int chan, int note, int vel);
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|
void note_off(int chan, int note, int vel);
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|
void all_notes_off(int chan);
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|
void all_sounds_off(int chan);
|
|
void adjust_pressure(int chan, int note, int amount);
|
|
void adjust_panning(int chan);
|
|
void drop_sustain(int chan);
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|
void adjust_pitchbend(int chan);
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|
void adjust_volume(int chan);
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|
|
|
void reset_voices();
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|
void reset_controllers(int chan);
|
|
void reset_midi();
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|
|
|
void select_sample(int voice, Instrument *instr, int vel);
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|
|
|
void kill_note(int voice);
|
|
void finish_note(int voice);
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|
|
|
void DataEntryCoarseRPN(int chan, int rpn, int val);
|
|
void DataEntryFineRPN(int chan, int rpn, int val);
|
|
void DataEntryCoarseNRPN(int chan, int nrpn, int val);
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|
void DataEntryFineNRPN(int chan, int nrpn, int val);
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|
|
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static void compute_pan(int panning, float &left_offset, float &right_offset);
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|
};
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|
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|
}
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#endif
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