167 lines
3.5 KiB
C
167 lines
3.5 KiB
C
/*
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vorbis.c
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ogg/vorbis support
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Copyright (C) 2001 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2002/6/14
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program 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.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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static const char rcsid[] =
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"$Id$";
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include "string.h"
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#endif
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#ifdef HAVE_STRINGS_H
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# include "strings.h"
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#endif
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#ifdef HAVE_VORBIS
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#include <stdlib.h>
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#include <vorbis/vorbisfile.h>
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#include "QF/cvar.h"
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#include "QF/quakeio.h"
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#include "QF/sound.h"
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#include "QF/sys.h"
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static size_t
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read_func (void *ptr, size_t size, size_t nmemb, void *datasource)
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{
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return Qread (datasource, ptr, size * nmemb);
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}
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static int
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seek_func (void *datasource, ogg_int64_t offset, int whence)
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{
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return Qseek (datasource, offset, whence);
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}
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static int
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close_func (void *datasource)
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{
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Qclose (datasource);
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return 0;
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}
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static long
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tell_func (void *datasource)
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{
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return Qtell (datasource);
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}
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static ov_callbacks callbacks = {
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read_func,
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seek_func,
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close_func,
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tell_func,
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};
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sfxcache_t *
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SND_LoadOgg (QFile *file, sfx_t *sfx, cache_allocator_t allocator)
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{
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OggVorbis_File vf;
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vorbis_info *vi;
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long samples, size;
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byte *data, *d;
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int current_section;
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int sample_start = -1, sample_count = 0;
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sfxcache_t *sc = 0;
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char **ptr;
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if (ov_open_callbacks (file, &vf, 0, 0, callbacks) < 0) {
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Sys_Printf ("Input does not appear to be an Ogg bitstream.\n");
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Qclose (file);
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return 0;
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}
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vi = ov_info (&vf, -1);
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samples = ov_pcm_total (&vf, -1);
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for (ptr = ov_comment (&vf, -1)->user_comments; *ptr; ptr++) {
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Sys_DPrintf ("%s\n", *ptr);
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if (strncmp ("CUEPOINT=", *ptr, 9) == 0) {
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sscanf (*ptr + 9, "%d %d", &sample_start, &sample_count);
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} else {
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sample_count = samples;
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}
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}
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if (sample_start != -1)
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samples = sample_start + sample_count;
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size = samples * vi->channels * 2;
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if (developer->int_val) {
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Sys_Printf ("\nBitstream is %d channel, %ldHz\n",
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vi->channels, vi->rate);
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Sys_Printf ("\nDecoded length: %ld samples (%ld bytes)\n",
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samples, size);
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Sys_Printf ("Encoded by: %s\n\n", ov_comment (&vf, -1)->vendor);
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}
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data = malloc (size);
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if (!data)
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goto bail;
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sc = SND_GetCache (samples, vi->rate, 2, vi->channels, sfx, allocator);
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if (!sc)
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goto bail;
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d = data;
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while (size) {
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int res = ov_read (&vf, d, size, 0, 2, 1, ¤t_section);
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if (res > 0) {
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size -= res;
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d += res;
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} else if (res < 0) {
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Sys_Printf ("vorbis error %d\n", res);
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goto bail;
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} else {
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Sys_Printf ("unexpected eof\n");
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break;
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}
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}
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sc->loopstart = sample_start;
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SND_ResampleSfx (sc, data);
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bail:
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if (data)
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free (data);
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ov_clear (&vf);
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return sc;
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}
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#else//HAVE_VORBIS
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#include "QF/sound.h"
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#include "QF/sys.h"
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#include "QF/quakeio.h"
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sfxcache_t *
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SND_LoadOgg (QFile *file, sfx_t *sfx, cache_allocator_t allocator)
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{
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Sys_Printf ("Ogg/Vorbis support not available, sorry.\n");
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Qclose (file);
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return 0;
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}
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#endif//HAVE_VORBIS
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