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/* the Music Player Daemon (MPD)
* (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu)
* This project's homepage is: http://www.musicpd.org
*
* 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
*/
#ifdef HAVE_OGG
#include "ogg_decode.h"
#include "command.h"
#include "utils.h"
#include "audio.h"
#include "log.h"
#include "pcm_utils.h"
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <vorbis/vorbisfile.h>
#ifdef WORDS_BIGENDIAN
#define OGG_DECODE_USE_BIGENDIAN 1
#else
#define OGG_DECODE_USE_BIGENDIAN 0
#endif
int ogg_decode(Buffer * cb, AudioFormat * af, DecoderControl * dc)
{
OggVorbis_File vf;
FILE * oggfp;
if(!(oggfp = fopen(dc->file,"r"))) {
ERROR("failed to open ogg\n");
return -1;
}
if(ov_open(oggfp, &vf, NULL, 0) < 0) {
ERROR("Input does not appear to be an Ogg bit stream.\n");
fclose(oggfp);
return -1;
}
{
vorbis_info *vi=ov_info(&vf,-1);
af->bits = 16;
af->channels = vi->channels;
af->sampleRate = vi->rate;
}
cb->totalTime = ov_time_total(&vf,-1);
dc->state = DECODE_STATE_DECODE;
dc->start = 0;
{
int current_section;
int eof = 0;
long ret;
char chunk[CHUNK_SIZE];
int chunkpos = 0;
long bitRate = 0;
long test;
while(!eof) {
if(dc->seek) {
cb->end = 0;
cb->wrap = 0;
chunkpos = 0;
ov_time_seek_page(&vf,dc->seekWhere);
dc->seek = 0;
}
ret = ov_read(&vf,chunk+chunkpos,
CHUNK_SIZE-chunkpos,
OGG_DECODE_USE_BIGENDIAN,
2,1,
¤t_section);
if(ret<=0) eof = 1;
else chunkpos+=ret;
if(chunkpos>=CHUNK_SIZE || eof) {
while(cb->begin==cb->end && cb->wrap &&
!dc->stop && !dc->seek)
{
usleep(10000);
}
if(dc->stop) break;
else if(dc->seek) continue;
memcpy(cb->chunks+cb->end*CHUNK_SIZE,
chunk,chunkpos);
cb->chunkSize[cb->end] = chunkpos;
chunkpos = 0;
cb->times[cb->end] = ov_time_tell(&vf);
if((test = ov_bitrate_instant(&vf))>0) {
bitRate = test/1000;
}
cb->bitRate[cb->end] = bitRate;
cb->end++;
if(cb->end>=buffered_chunks) {
cb->end = 0;
cb->wrap = 1;
}
}
}
ov_clear(&vf);
if(dc->seek) dc->seek = 0;
if(dc->stop) {
dc->state = DECODE_STATE_STOP;
dc->stop = 0;
}
else dc->state = DECODE_STATE_STOP;
}
return 0;
}
#endif
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