2004-03-18 14:47:41 +01:00
|
|
|
/* 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
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include "mp4_decode.h"
|
|
|
|
|
|
|
|
#ifdef HAVE_FAAD
|
|
|
|
|
|
|
|
#include "command.h"
|
|
|
|
#include "utils.h"
|
|
|
|
#include "audio.h"
|
|
|
|
#include "log.h"
|
|
|
|
#include "pcm_utils.h"
|
|
|
|
|
|
|
|
#include "mp4ff/mp4ff.h"
|
|
|
|
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include <faad.h>
|
|
|
|
|
2004-03-18 17:31:29 +01:00
|
|
|
/* all code here is either based on or copied from FAAD2's frontend code */
|
|
|
|
|
2004-03-18 14:47:41 +01:00
|
|
|
int mp4_getAACTrack(mp4ff_t *infile) {
|
|
|
|
/* find AAC track */
|
|
|
|
int i, rc;
|
|
|
|
int numTracks = mp4ff_total_tracks(infile);
|
|
|
|
|
|
|
|
for (i = 0; i < numTracks; i++) {
|
|
|
|
unsigned char *buff = NULL;
|
|
|
|
int buff_size = 0;
|
|
|
|
mp4AudioSpecificConfig mp4ASC;
|
|
|
|
|
|
|
|
mp4ff_get_decoder_config(infile, i, &buff, &buff_size);
|
|
|
|
|
|
|
|
if (buff) {
|
|
|
|
rc = AudioSpecificConfig(buff, buff_size, &mp4ASC);
|
|
|
|
free(buff);
|
|
|
|
if (rc < 0) continue;
|
|
|
|
return i;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* can't decode this */
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
uint32_t mp4_readCallback(void *user_data, void *buffer, uint32_t length) {
|
|
|
|
return fread(buffer, 1, length, (FILE*)user_data);
|
|
|
|
}
|
|
|
|
|
|
|
|
uint32_t mp4_seekCallback(void *user_data, uint64_t position) {
|
|
|
|
return fseek((FILE*)user_data, position, SEEK_SET);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2004-03-18 20:43:07 +01:00
|
|
|
int mp4_decode(Buffer * cb, AudioFormat * af, DecoderControl * dc) {
|
2004-03-18 14:47:41 +01:00
|
|
|
FILE * fh;
|
|
|
|
mp4ff_t * mp4fh;
|
|
|
|
mp4ff_callback_t * mp4cb;
|
|
|
|
int32_t track;
|
2004-03-18 17:31:29 +01:00
|
|
|
float time;
|
2004-03-18 14:47:41 +01:00
|
|
|
int32_t scale;
|
|
|
|
faacDecHandle decoder;
|
|
|
|
faacDecFrameInfo frameInfo;
|
|
|
|
faacDecConfigurationPtr config;
|
|
|
|
unsigned char * mp4Buffer;
|
|
|
|
int mp4BufferSize;
|
|
|
|
unsigned long sampleRate;
|
|
|
|
unsigned char channels;
|
|
|
|
long sampleId;
|
|
|
|
long numSamples;
|
2004-03-18 17:31:29 +01:00
|
|
|
int eof = 0;
|
|
|
|
long dur;
|
|
|
|
unsigned int sampleCount;
|
|
|
|
char * sampleBuffer;
|
|
|
|
size_t sampleBufferLen;
|
2004-03-18 20:43:07 +01:00
|
|
|
unsigned int initial = 1;
|
|
|
|
int chunkLen = 0;
|
2004-03-18 23:20:26 +01:00
|
|
|
float * seekTable;
|
|
|
|
long seekTableEnd = -1;
|
|
|
|
int seekPositionFound = 0;
|
2004-03-18 14:47:41 +01:00
|
|
|
|
|
|
|
fh = fopen(dc->file,"r");
|
|
|
|
if(!fh) {
|
|
|
|
ERROR("failed to open %s\n",dc->file);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
mp4cb = malloc(sizeof(mp4ff_callback_t));
|
|
|
|
mp4cb->read = mp4_readCallback;
|
|
|
|
mp4cb->seek = mp4_seekCallback;
|
|
|
|
mp4cb->user_data = fh;
|
|
|
|
|
|
|
|
mp4fh = mp4ff_open_read(mp4cb);
|
|
|
|
if(!mp4fh) {
|
|
|
|
ERROR("Input does not appear to be a mp4 stream.\n");
|
|
|
|
free(mp4cb);
|
|
|
|
fclose(fh);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
track = mp4_getAACTrack(mp4fh);
|
|
|
|
if(track < 0) {
|
|
|
|
ERROR("No AAC track found in mp4 stream.\n");
|
|
|
|
mp4ff_close(mp4fh);
|
|
|
|
fclose(fh);
|
|
|
|
free(mp4cb);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
decoder = faacDecOpen();
|
|
|
|
|
|
|
|
config = faacDecGetCurrentConfiguration(decoder);
|
|
|
|
config->outputFormat = FAAD_FMT_16BIT;
|
|
|
|
config->downMatrix = 1;
|
|
|
|
config->dontUpSampleImplicitSBR = 1;
|
|
|
|
faacDecSetConfiguration(decoder,config);
|
|
|
|
|
|
|
|
af->bits = 16;
|
|
|
|
|
|
|
|
mp4Buffer = NULL;
|
|
|
|
mp4BufferSize = 0;
|
|
|
|
mp4ff_get_decoder_config(mp4fh,track,&mp4Buffer,&mp4BufferSize);
|
|
|
|
|
|
|
|
if(faacDecInit2(decoder,mp4Buffer,mp4BufferSize,&sampleRate,&channels)
|
|
|
|
< 0)
|
|
|
|
{
|
|
|
|
ERROR("Error initializing AAC decoder library.\n");
|
|
|
|
faacDecClose(decoder);
|
|
|
|
mp4ff_close(mp4fh);
|
|
|
|
free(mp4cb);
|
|
|
|
fclose(fh);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
af->sampleRate = sampleRate;
|
|
|
|
af->channels = channels;
|
|
|
|
time = mp4ff_get_track_duration_use_offsets(mp4fh,track);
|
|
|
|
scale = mp4ff_time_scale(mp4fh,track);
|
|
|
|
|
2004-03-18 17:31:29 +01:00
|
|
|
if(mp4Buffer) free(mp4Buffer);
|
2004-03-18 14:47:41 +01:00
|
|
|
|
|
|
|
if(scale < 0) {
|
|
|
|
ERROR("Error getting audio format of mp4 AAC track.\n");
|
|
|
|
faacDecClose(decoder);
|
|
|
|
mp4ff_close(mp4fh);
|
|
|
|
fclose(fh);
|
|
|
|
free(mp4cb);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
cb->totalTime = ((float)time)/scale;
|
|
|
|
|
|
|
|
numSamples = mp4ff_num_samples(mp4fh,track);
|
|
|
|
|
|
|
|
dc->state = DECODE_STATE_DECODE;
|
|
|
|
dc->start = 0;
|
2004-03-18 17:31:29 +01:00
|
|
|
time = 0.0;
|
|
|
|
|
2004-03-18 23:20:26 +01:00
|
|
|
seekTable = malloc(sizeof(float)*numSamples);
|
|
|
|
|
2004-03-18 17:31:29 +01:00
|
|
|
for(sampleId=0; sampleId<numSamples && !eof; sampleId++) {
|
2004-03-18 23:20:26 +01:00
|
|
|
if(dc->seek && seekTableEnd>1 &&
|
|
|
|
seekTable[seekTableEnd]>=dc->seekWhere)
|
|
|
|
{
|
|
|
|
int i = 2;
|
|
|
|
while(seekTable[i]<dc->seekWhere) i++;
|
|
|
|
sampleId = i-1;
|
|
|
|
time = seekTable[sampleId];
|
|
|
|
}
|
|
|
|
|
|
|
|
if((dur=mp4ff_get_sample_duration(mp4fh,track,sampleId))==0) {
|
|
|
|
eof = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(sampleId>seekTableEnd) {
|
|
|
|
seekTable[sampleId] = time;
|
|
|
|
seekTableEnd = sampleId;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(sampleId==0) dur = 0;
|
|
|
|
time+=((float)dur)/scale;
|
|
|
|
|
|
|
|
if(dc->seek && time>dc->seekWhere) seekPositionFound = 1;
|
|
|
|
|
|
|
|
if(dc->seek && seekPositionFound) {
|
|
|
|
seekPositionFound = 0;
|
|
|
|
chunkLen = 0;
|
2004-03-18 17:31:29 +01:00
|
|
|
cb->end = 0;
|
|
|
|
cb->wrap = 0;
|
|
|
|
dc->seek = 0;
|
|
|
|
}
|
2004-03-18 14:47:41 +01:00
|
|
|
|
2004-03-18 23:20:26 +01:00
|
|
|
if(dc->seek) continue;
|
|
|
|
|
|
|
|
if(mp4ff_read_sample(mp4fh,track,sampleId,&mp4Buffer,
|
|
|
|
&mp4BufferSize) == 0)
|
|
|
|
{
|
2004-03-18 17:31:29 +01:00
|
|
|
eof = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
sampleBuffer = faacDecDecode(decoder,&frameInfo,mp4Buffer,
|
|
|
|
mp4BufferSize);
|
|
|
|
if(mp4Buffer) free(mp4Buffer);
|
|
|
|
sampleCount = (unsigned long)(dur*channels);
|
|
|
|
|
|
|
|
if(sampleCount>0) initial =0;
|
|
|
|
sampleBufferLen = sampleCount*2;
|
2004-03-18 23:20:26 +01:00
|
|
|
|
|
|
|
while(sampleBufferLen>0 && !dc->seek) {
|
2004-03-18 20:43:07 +01:00
|
|
|
size_t size = sampleBufferLen>CHUNK_SIZE-chunkLen ?
|
|
|
|
CHUNK_SIZE-chunkLen:
|
2004-03-18 14:47:41 +01:00
|
|
|
sampleBufferLen;
|
2004-03-18 20:43:07 +01:00
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
|
|
pcm_changeBufferEndianness(sampleBuffer,size,af->bits);
|
|
|
|
#endif
|
2004-03-18 17:31:29 +01:00
|
|
|
while(cb->begin==cb->end && cb->wrap &&
|
|
|
|
!dc->stop && !dc->seek)
|
|
|
|
{
|
|
|
|
usleep(10000);
|
|
|
|
}
|
|
|
|
if(dc->stop) {
|
|
|
|
eof = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
else if(dc->seek) break;
|
2004-03-18 14:47:41 +01:00
|
|
|
|
2004-03-18 17:31:29 +01:00
|
|
|
sampleBufferLen-=size;
|
2004-03-18 20:43:07 +01:00
|
|
|
memcpy(cb->chunks+cb->end*CHUNK_SIZE+chunkLen,
|
|
|
|
sampleBuffer,size);
|
2004-03-18 17:31:29 +01:00
|
|
|
cb->times[cb->end] = time;
|
2004-03-18 20:43:07 +01:00
|
|
|
sampleBuffer+=size;
|
|
|
|
chunkLen+=size;
|
|
|
|
if(chunkLen>=CHUNK_SIZE) {
|
|
|
|
cb->chunkSize[cb->end] = CHUNK_SIZE;
|
|
|
|
++cb->end;
|
2004-03-18 17:31:29 +01:00
|
|
|
|
2004-03-18 20:43:07 +01:00
|
|
|
if(cb->end>=buffered_chunks) {
|
|
|
|
cb->end = 0;
|
|
|
|
cb->wrap = 1;
|
|
|
|
}
|
|
|
|
chunkLen = 0;
|
2004-03-18 14:47:41 +01:00
|
|
|
}
|
|
|
|
}
|
2004-03-18 17:31:29 +01:00
|
|
|
}
|
2004-03-18 14:47:41 +01:00
|
|
|
|
2004-03-18 20:43:07 +01:00
|
|
|
if(!dc->stop && !dc->seek && chunkLen) {
|
|
|
|
cb->chunkSize[cb->end] = CHUNK_SIZE;
|
|
|
|
++cb->end;
|
|
|
|
|
|
|
|
if(cb->end>=buffered_chunks) {
|
|
|
|
cb->end = 0;
|
|
|
|
cb->wrap = 1;
|
|
|
|
}
|
|
|
|
chunkLen = 0;
|
|
|
|
}
|
|
|
|
|
2004-03-18 17:31:29 +01:00
|
|
|
if(dc->seek) dc->seek = 0;
|
2004-03-18 14:47:41 +01:00
|
|
|
|
2004-03-18 17:31:29 +01:00
|
|
|
if(dc->stop) {
|
|
|
|
dc->state = DECODE_STATE_STOP;
|
|
|
|
dc->stop = 0;
|
2004-03-18 14:47:41 +01:00
|
|
|
}
|
2004-03-18 17:31:29 +01:00
|
|
|
else dc->state = DECODE_STATE_STOP;
|
2004-03-18 14:47:41 +01:00
|
|
|
|
2004-03-18 23:20:26 +01:00
|
|
|
free(seekTable);
|
2004-03-18 14:47:41 +01:00
|
|
|
faacDecClose(decoder);
|
|
|
|
mp4ff_close(mp4fh);
|
|
|
|
fclose(fh);
|
|
|
|
free(mp4cb);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif /* HAVE_FAAD */
|