457 lines
10 KiB
C
457 lines
10 KiB
C
/* 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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#include "../inputPlugin.h"
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#ifdef HAVE_FAAD
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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 "../inputStream.h"
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#include "../outputBuffer.h"
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#include "../decode.h"
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#include "../mp4ff/mp4ff.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 <faad.h>
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/* all code here is either based on or copied from FAAD2's frontend code */
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int mp4_getAACTrack(mp4ff_t *infile) {
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/* find AAC track */
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int i, rc;
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int numTracks = mp4ff_total_tracks(infile);
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for (i = 0; i < numTracks; i++) {
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unsigned char *buff = NULL;
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int buff_size = 0;
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#ifdef HAVE_MP4AUDIOSPECIFICCONFIG
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mp4AudioSpecificConfig mp4ASC;
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#else
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unsigned long dummy1_32;
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unsigned char dummy2_8, dummy3_8, dummy4_8, dummy5_8, dummy6_8,
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dummy7_8, dummy8_8;
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#endif
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mp4ff_get_decoder_config(infile, i, &buff, &buff_size);
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if (buff) {
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#ifdef HAVE_MP4AUDIOSPECIFICCONFIG
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rc = AudioSpecificConfig(buff, buff_size, &mp4ASC);
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#else
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rc = AudioSpecificConfig(buff, &dummy1_32, &dummy2_8,
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&dummy3_8, &dummy4_8, &dummy5_8,
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&dummy6_8, &dummy7_8, &dummy8_8);
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#endif
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free(buff);
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if (rc < 0) continue;
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return i;
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}
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}
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/* can't decode this */
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return -1;
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}
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uint32_t mp4_inputStreamReadCallback(void *inStream, void *buffer,
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uint32_t length)
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{
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return readFromInputStream((InputStream*) inStream, buffer, 1, length);
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}
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uint32_t mp4_inputStreamSeekCallback(void *inStream, uint64_t position) {
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return seekInputStream((InputStream *) inStream, position, SEEK_SET);
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}
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int mp4_decode(OutputBuffer * cb, DecoderControl * dc, char * path) {
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mp4ff_t * mp4fh;
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mp4ff_callback_t * mp4cb;
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int32_t track;
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float time;
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int32_t scale;
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faacDecHandle decoder;
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faacDecFrameInfo frameInfo;
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faacDecConfigurationPtr config;
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unsigned char * mp4Buffer;
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int mp4BufferSize;
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unsigned long sampleRate;
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unsigned char channels;
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long sampleId;
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long numSamples;
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int eof = 0;
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long dur;
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unsigned int sampleCount;
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char * sampleBuffer;
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size_t sampleBufferLen;
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unsigned int initial = 1;
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float * seekTable;
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long seekTableEnd = -1;
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int seekPositionFound = 0;
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long offset;
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mpd_uint16 bitRate = 0;
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InputStream inStream;
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int seeking = 0;
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if(openInputStream(&inStream, path) < 0) {
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ERROR("failed to open %s\n", path);
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return -1;
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}
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mp4cb = malloc(sizeof(mp4ff_callback_t));
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mp4cb->read = mp4_inputStreamReadCallback;
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mp4cb->seek = mp4_inputStreamSeekCallback;
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mp4cb->user_data = &inStream;
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mp4fh = mp4ff_open_read(mp4cb);
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if(!mp4fh) {
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ERROR("Input does not appear to be a mp4 stream.\n");
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free(mp4cb);
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closeInputStream(&inStream);
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return -1;
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}
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track = mp4_getAACTrack(mp4fh);
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if(track < 0) {
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ERROR("No AAC track found in mp4 stream.\n");
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mp4ff_close(mp4fh);
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closeInputStream(&inStream);
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free(mp4cb);
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return -1;
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}
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decoder = faacDecOpen();
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config = faacDecGetCurrentConfiguration(decoder);
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config->outputFormat = FAAD_FMT_16BIT;
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#ifdef HAVE_FAACDECCONFIGURATION_DOWNMATRIX
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config->downMatrix = 1;
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#endif
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#ifdef HAVE_FAACDECCONFIGURATION_DONTUPSAMPLEIMPLICITSBR
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config->dontUpSampleImplicitSBR = 0;
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#endif
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faacDecSetConfiguration(decoder,config);
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dc->audioFormat.bits = 16;
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mp4Buffer = NULL;
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mp4BufferSize = 0;
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mp4ff_get_decoder_config(mp4fh,track,&mp4Buffer,&mp4BufferSize);
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if(faacDecInit2(decoder,mp4Buffer,mp4BufferSize,&sampleRate,&channels)
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< 0)
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{
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ERROR("Error not a AAC stream.\n");
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faacDecClose(decoder);
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mp4ff_close(mp4fh);
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free(mp4cb);
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closeInputStream(&inStream);
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return -1;
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}
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dc->audioFormat.sampleRate = sampleRate;
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dc->audioFormat.channels = channels;
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time = mp4ff_get_track_duration_use_offsets(mp4fh,track);
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scale = mp4ff_time_scale(mp4fh,track);
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if(mp4Buffer) free(mp4Buffer);
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if(scale < 0) {
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ERROR("Error getting audio format of mp4 AAC track.\n");
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faacDecClose(decoder);
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mp4ff_close(mp4fh);
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closeInputStream(&inStream);
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free(mp4cb);
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return -1;
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}
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dc->totalTime = ((float)time)/scale;
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numSamples = mp4ff_num_samples(mp4fh,track);
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time = 0.0;
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seekTable = malloc(sizeof(float)*numSamples);
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for(sampleId=0; sampleId<numSamples && !eof; sampleId++) {
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if(dc->seek) seeking = 1;
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if(seeking && seekTableEnd>1 &&
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seekTable[seekTableEnd]>=dc->seekWhere)
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{
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int i = 2;
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while(seekTable[i]<dc->seekWhere) i++;
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sampleId = i-1;
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time = seekTable[sampleId];
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}
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dur = mp4ff_get_sample_duration(mp4fh,track,sampleId);
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offset = mp4ff_get_sample_offset(mp4fh,track,sampleId);
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if(sampleId>seekTableEnd) {
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seekTable[sampleId] = time;
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seekTableEnd = sampleId;
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}
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if(sampleId==0) dur = 0;
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if(offset>dur) dur = 0;
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else dur-=offset;
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time+=((float)dur)/scale;
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if(seeking && time>dc->seekWhere) seekPositionFound = 1;
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if(seeking && seekPositionFound) {
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seekPositionFound = 0;
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clearOutputBuffer(cb);
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seeking = 0;
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dc->seek = 0;
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}
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if(seeking) continue;
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if(mp4ff_read_sample(mp4fh,track,sampleId,&mp4Buffer,
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&mp4BufferSize) == 0)
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{
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eof = 1;
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continue;
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}
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#ifdef HAVE_FAAD_BUFLEN_FUNCS
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sampleBuffer = faacDecDecode(decoder,&frameInfo,mp4Buffer,
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mp4BufferSize);
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#else
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sampleBuffer = faacDecDecode(decoder,&frameInfo,mp4Buffer);
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#endif
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if(mp4Buffer) free(mp4Buffer);
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if(frameInfo.error > 0) {
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ERROR("error decoding MP4 file: %s\n", path);
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ERROR("faad2 error: %s\n",
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faacDecGetErrorMessage(frameInfo.error));
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eof = 1;
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break;
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}
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if(dc->state != DECODE_STATE_DECODE) {
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channels = frameInfo.channels;
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#ifdef HAVE_FAACDECFRAMEINFO_SAMPLERATE
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scale = frameInfo.samplerate;
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#endif
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dc->audioFormat.sampleRate = scale;
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dc->audioFormat.channels = frameInfo.channels;
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getOutputAudioFormat(&(dc->audioFormat),
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&(cb->audioFormat));
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dc->state = DECODE_STATE_DECODE;
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}
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if(channels*(dur+offset) > frameInfo.samples) {
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dur = frameInfo.samples/channels;
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offset = 0;
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}
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sampleCount = (unsigned long)(dur*channels);
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if(sampleCount>0) {
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initial =0;
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bitRate = frameInfo.bytesconsumed*8.0*
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frameInfo.channels*scale/
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frameInfo.samples/1000+0.5;
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}
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sampleBufferLen = sampleCount*2;
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sampleBuffer+=offset*channels*2;
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sendDataToOutputBuffer(cb, NULL, dc, 1, sampleBuffer,
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sampleBufferLen, time, bitRate, NULL);
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if(dc->stop) {
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eof = 1;
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break;
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}
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}
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free(seekTable);
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faacDecClose(decoder);
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mp4ff_close(mp4fh);
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closeInputStream(&inStream);
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free(mp4cb);
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if(dc->state != DECODE_STATE_DECODE) return -1;
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if(dc->seek && seeking) {
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clearOutputBuffer(cb);
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dc->seek = 0;
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}
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flushOutputBuffer(cb);
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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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return 0;
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}
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MpdTag * mp4DataDup(char * file, int * mp4MetadataFound) {
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MpdTag * ret = NULL;
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InputStream inStream;
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mp4ff_t * mp4fh;
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mp4ff_callback_t * cb;
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int32_t track;
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int32_t time;
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int32_t scale;
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int i;
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*mp4MetadataFound = 0;
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if(openInputStream(&inStream, file) < 0) {
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DEBUG("mp4DataDup: Failed to open file: %s\n", file);
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return NULL;
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}
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cb = malloc(sizeof(mp4ff_callback_t));
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cb->read = mp4_inputStreamReadCallback;
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cb->seek = mp4_inputStreamSeekCallback;
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cb->user_data = &inStream;
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mp4fh = mp4ff_open_read(cb);
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if(!mp4fh) {
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free(cb);
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closeInputStream(&inStream);
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return NULL;
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}
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track = mp4_getAACTrack(mp4fh);
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if(track < 0) {
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mp4ff_close(mp4fh);
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closeInputStream(&inStream);
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free(cb);
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return NULL;
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}
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ret = newMpdTag();
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time = mp4ff_get_track_duration_use_offsets(mp4fh,track);
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scale = mp4ff_time_scale(mp4fh,track);
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if(scale < 0) {
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mp4ff_close(mp4fh);
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closeInputStream(&inStream);
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free(cb);
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freeMpdTag(ret);
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return NULL;
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}
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ret->time = ((float)time)/scale+0.5;
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for(i = 0; i < mp4ff_meta_get_num_items(mp4fh); i++) {
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char * item;
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char * value;
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mp4ff_meta_get_by_index(mp4fh, i, &item, &value);
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if(0 == strcasecmp("artist", item)) {
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addItemToMpdTag(ret, TAG_ITEM_ARTIST, value);
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*mp4MetadataFound = 1;
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}
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else if(0 == strcasecmp("title", item)) {
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addItemToMpdTag(ret, TAG_ITEM_TITLE, value);
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*mp4MetadataFound = 1;
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}
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else if(0 == strcasecmp("album", item)) {
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addItemToMpdTag(ret, TAG_ITEM_ALBUM, value);
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*mp4MetadataFound = 1;
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}
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else if(0 == strcasecmp("track", item)) {
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addItemToMpdTag(ret, TAG_ITEM_TRACK, value);
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*mp4MetadataFound = 1;
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}
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else if(0 == strcasecmp("genre", item)) {
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addItemToMpdTag(ret, TAG_ITEM_GENRE, value);
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*mp4MetadataFound = 1;
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}
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else if(0 == strcasecmp("date", item)) {
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addItemToMpdTag(ret, TAG_ITEM_DATE, value);
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*mp4MetadataFound = 1;
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}
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free(item);
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free(value);
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}
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mp4ff_close(mp4fh);
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closeInputStream(&inStream);
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free(cb);
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return ret;
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}
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MpdTag * mp4TagDup(char * file) {
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MpdTag * ret = NULL;
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int mp4MetadataFound = 0;
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ret = mp4DataDup(file, &mp4MetadataFound);
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if(!ret) return NULL;
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if(!mp4MetadataFound) {
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MpdTag * temp = id3Dup(file);
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if(temp) {
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temp->time = ret->time;
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freeMpdTag(ret);
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ret = temp;
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}
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}
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return ret;
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}
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char * mp4Suffixes[] = {"m4a", "mp4", NULL};
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InputPlugin mp4Plugin =
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{
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"mp4",
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NULL,
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NULL,
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NULL,
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mp4_decode,
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mp4TagDup,
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INPUT_PLUGIN_STREAM_FILE,
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mp4Suffixes,
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NULL
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};
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#else
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InputPlugin mp4Plugin =
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{
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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0,
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NULL,
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NULL
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};
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#endif /* HAVE_FAAD */
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