122 lines
2.7 KiB
C
122 lines
2.7 KiB
C
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/* the Music Player Daemon (MPD)
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* (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu)
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* This project's homepage is: http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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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. See the
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* 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 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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#ifdef HAVE_OGG
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#include "ogg_decode.h"
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#include "command.h"
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#include "utils.h"
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#include "audio.h"
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#include "log.h"
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#include "pcm_utils.h"
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <vorbis/vorbisfile.h>
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int ogg_decode(Buffer * cb, AudioFormat * af, DecoderControl * dc)
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{
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OggVorbis_File vf;
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FILE * oggfp;
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if(!(oggfp = fopen(dc->file,"r"))) {
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ERROR("failed to open ogg\n");
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return -1;
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}
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if(ov_open(oggfp, &vf, NULL, 0) < 0) {
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ERROR("Input does not appear to be an Ogg bit stream.\n");
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fclose(oggfp);
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return -1;
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}
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{
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vorbis_info *vi=ov_info(&vf,-1);
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af->bits = 16;
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af->channels = vi->channels;
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af->sampleRate = vi->rate;
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}
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cb->totalTime = ov_time_total(&vf,-1);
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dc->state = DECODE_STATE_DECODE;
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dc->start = 0;
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{
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int current_section;
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int eof = 0;
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long ret;
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char chunk[CHUNK_SIZE];
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long bitRate = 0;
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long test;
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while(!eof) {
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if(dc->seek) {
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cb->end = 0;
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cb->wrap = 0;
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ov_time_seek_page(&vf,dc->seekWhere);
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dc->seek = 0;
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}
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ret = ov_read(&vf,chunk,CHUNK_SIZE,0,2,1,
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¤t_section);
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if(ret<=0) eof = 1;
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else {
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while(cb->begin==cb->end && cb->wrap &&
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!dc->stop && !dc->seek)
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{
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usleep(1000);
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}
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if(dc->stop) break;
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else if(dc->seek) continue;
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#ifdef WORDS_BIGENDIAN
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pcm_changeBufferEndianness(chunk,CHUNK_SIZE,
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af->bits);
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#endif
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memcpy(cb->chunks+cb->end*CHUNK_SIZE,
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chunk,CHUNK_SIZE);
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cb->chunkSize[cb->end] = ret;
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cb->times[cb->end] = ov_time_tell(&vf);
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if((test = ov_bitrate_instant(&vf))>0) {
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bitRate = test/1000;
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}
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cb->bitRate[cb->end] = bitRate;
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cb->end++;
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if(cb->end>=BUFFERED_CHUNKS) {
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cb->end = 0;
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cb->wrap = 1;
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}
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}
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}
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ov_clear(&vf);
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if(dc->seek) dc->seek = 0;
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if(dc->stop) {
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dc->state = DECODE_STATE_STOP;
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dc->stop = 0;
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}
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else dc->state = DECODE_STATE_STOP;
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}
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return 0;
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}
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#endif
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