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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
*
* libaudiofile (wave) support added by Eric Wong <normalperson@yhbt.net>
*
* 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_AUDIOFILE
#include "audiofile_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 <audiofile.h>
int getAudiofileTotalTime(char * file)
{
int time;
AFfilehandle af_fp = afOpenFile(file, "r", NULL);
if(af_fp == AF_NULL_FILEHANDLE) {
return -1;
}
time = (int)
((double)afGetFrameCount(af_fp,AF_DEFAULT_TRACK)
/afGetRate(af_fp,AF_DEFAULT_TRACK));
afCloseFile(af_fp);
return time;
}
int audiofile_decode(Buffer * cb, AudioFormat * af, DecoderControl * dc)
{
int fs, frame_count;
AFfilehandle af_fp;
af_fp = afOpenFile(dc->file,"r", NULL);
if(af_fp == AF_NULL_FILEHANDLE) {
ERROR("failed to open %s\n",dc->file);
return -1;
}
afGetSampleFormat(af_fp, AF_DEFAULT_TRACK, &fs, &af->bits);
af->sampleRate = (int)afGetRate(af_fp, AF_DEFAULT_TRACK);
af->channels = afGetChannels(af_fp,AF_DEFAULT_TRACK);
frame_count = afGetFrameCount(af_fp,AF_DEFAULT_TRACK);
cb->totalTime = ((float)frame_count/(float)af->sampleRate);
if (af->bits != 8 && af->bits != 16) {
ERROR("Only 8 and 16-bit files are supported. %s is %i-bit\n",
dc->file,af->bits);
afCloseFile(af_fp);
return -1;
}
fs = (int)afGetFrameSize(af_fp, AF_DEFAULT_TRACK,1);
dc->state = DECODE_STATE_DECODE;
dc->start = 0;
{
int ret, eof = 0, current = 0;
unsigned char chunk[CHUNK_SIZE];
while(!eof) {
if(dc->seek) {
cb->end = 0;
cb->wrap = 0;
current = dc->seekWhere * af->sampleRate;
afSeekFrame(af_fp, AF_DEFAULT_TRACK,current);
dc->seek = 0;
}
ret = afReadFrames(af_fp, AF_DEFAULT_TRACK, chunk, CHUNK_SIZE/fs);
if(ret<=0) eof = 1;
else {
while(cb->begin==cb->end && cb->wrap &&
!dc->stop && !dc->seek){
usleep(1000);
}
if(dc->stop) break;
else if(dc->seek) continue;
#ifdef WORDS_BIGENDIAN
pcm_changeBufferEndianness(chunk,CHUNK_SIZE,
af->bits);
#endif
memcpy(cb->chunks+cb->end*CHUNK_SIZE,chunk,
CHUNK_SIZE);
cb->chunkSize[cb->end] = CHUNK_SIZE;
current += ret;
cb->times[cb->end] = (float)current/(float)af->sampleRate;
++cb->end;
if(cb->end>=BUFFERED_CHUNKS) {
cb->end = 0;
cb->wrap = 1;
}
}
}
if(dc->seek) dc->seek = 0;
if(dc->stop) {
dc->state = DECODE_STATE_STOP;
dc->stop = 0;
}
else dc->state = DECODE_STATE_STOP;
}
afCloseFile(af_fp);
return 0;
}
#endif /* HAVE_AUDIOFILE */
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