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/*
* FFmpegUtils.c
* Created by Alexander Strange on 11/7/10.
*
* This file is part of Perian.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* FFmpeg API interfaces and such
*/
#include <pthread.h>
#include <libavformat/avformat.h>
#include "FFmpegUtils.h"
#include "CommonUtils.h"
#include "Codecprintf.h"
#include "CodecIDs.h"
void FFAVCodecContextToASBD(AVCodecContext *avctx, AudioStreamBasicDescription *asbd)
{
asbd->mFormatID = avctx->codec_tag;
asbd->mSampleRate = avctx->sample_rate;
asbd->mChannelsPerFrame = avctx->channels;
asbd->mBytesPerPacket = avctx->block_align;
asbd->mFramesPerPacket = avctx->frame_size;
asbd->mBitsPerChannel = avctx->bits_per_coded_sample;
}
void FFASBDToAVCodecContext(AudioStreamBasicDescription *asbd, AVCodecContext *avctx)
{
avctx->codec_tag = asbd->mFormatID;
avctx->sample_rate = asbd->mSampleRate;
avctx->channels = asbd->mChannelsPerFrame;
avctx->block_align = asbd->mBytesPerPacket;
avctx->frame_size = asbd->mFramesPerPacket;
avctx->bits_per_coded_sample = asbd->mBitsPerChannel;
}
static int PerianLockMgrCallback(void **mutex, enum AVLockOp op)
{
pthread_mutex_t **m = (pthread_mutex_t **)mutex;
int ret = 0;
switch (op) {
case AV_LOCK_CREATE:
*m = malloc(sizeof(pthread_mutex_t));
ret = pthread_mutex_init(*m, NULL);
break;
case AV_LOCK_OBTAIN:
ret = pthread_mutex_lock(*m);
break;
case AV_LOCK_RELEASE:
ret = pthread_mutex_unlock(*m);
break;
case AV_LOCK_DESTROY:
ret = pthread_mutex_destroy(*m);
free(*m);
}
return ret;
}
#define REGISTER_DEMUXER(x) { \
extern AVInputFormat ff_##x##_demuxer; \
av_register_input_format(&ff_##x##_demuxer); }
#define REGISTER_DECODER(x) { \
extern AVCodec ff_##x##_decoder; \
avcodec_register(&ff_##x##_decoder); }
#define REGISTER_PARSER(x) { \
extern AVCodecParser ff_##x##_parser; \
av_register_codec_parser(&ff_##x##_parser); }
void FFInitFFmpeg()
{
static dispatch_once_t once;
dispatch_once(&once, ^{
av_lockmgr_register(PerianLockMgrCallback);
REGISTER_DEMUXER(avi);
REGISTER_DEMUXER(flv);
REGISTER_DEMUXER(tta);
REGISTER_DEMUXER(nuv);
REGISTER_PARSER(ac3);
REGISTER_PARSER(mpegaudio);
REGISTER_DECODER(msmpeg4v1);
REGISTER_DECODER(msmpeg4v2);
REGISTER_DECODER(msmpeg4v3);
REGISTER_DECODER(mpeg4);
REGISTER_DECODER(h264);
REGISTER_DECODER(flv);
REGISTER_DECODER(flashsv);
REGISTER_DECODER(vp3);
REGISTER_DECODER(vp6);
REGISTER_DECODER(vp6f);
REGISTER_DECODER(vp8);
REGISTER_DECODER(h263i);
REGISTER_DECODER(huffyuv);
REGISTER_DECODER(ffvhuff);
REGISTER_DECODER(mpeg1video);
REGISTER_DECODER(mpeg2video);
REGISTER_DECODER(fraps);
REGISTER_DECODER(snow);
REGISTER_DECODER(nuv);
REGISTER_DECODER(ffv1);
REGISTER_DECODER(theora);
REGISTER_DECODER(wmav1);
REGISTER_DECODER(wmav2);
REGISTER_DECODER(adpcm_swf);
REGISTER_DECODER(vorbis);
REGISTER_DECODER(mp1);
REGISTER_DECODER(mp2);
REGISTER_DECODER(tta);
REGISTER_DECODER(dca);
REGISTER_DECODER(nellymoser);
REGISTER_DECODER(aac);
REGISTER_DECODER(dvdsub);
REGISTER_DECODER(tscc);
REGISTER_DECODER(vp6a);
REGISTER_DECODER(zmbv);
REGISTER_DECODER(indeo2);
REGISTER_DECODER(indeo3);
REGISTER_DECODER(indeo4);
REGISTER_DECODER(indeo5);
REGISTER_DECODER(dxtory);
av_log_set_callback(FFMpegCodecprintf);
});
}
// List of codec IDs we know about and that map to audio fourccs
// XXX this is probably a duplicate of something inside libavformat
static const struct {
OSType mFormatID;
enum CodecID codecID;
} kAudioCodecMap[] =
{
{ kAudioFormatWMA1MS, CODEC_ID_WMAV1 },
{ kAudioFormatWMA2MS, CODEC_ID_WMAV2 },
{ kAudioFormatFlashADPCM, CODEC_ID_ADPCM_SWF },
{ kAudioFormatXiphVorbis, CODEC_ID_VORBIS },
{ kAudioFormatMPEGLayer1, CODEC_ID_MP1 },
{ kAudioFormatMPEGLayer2, CODEC_ID_MP2 },
{ kAudioFormatMPEGLayer3, CODEC_ID_MP3 },
{ 'ms\0\0' + 0x50, CODEC_ID_MP2 },
{ kAudioFormatDTS, CODEC_ID_DTS },
{ kAudioFormatNellymoser, CODEC_ID_NELLYMOSER },
{ kAudioFormatTTA, CODEC_ID_TTA },
{ kAudioFormatAC3MS, CODEC_ID_AC3 },
{ kAudioFormatLinearPCM, CODEC_ID_PCM_S16LE },
{ kAudioFormatLinearPCM, CODEC_ID_PCM_U8 },
{ kAudioFormatALaw, CODEC_ID_PCM_ALAW },
{ kAudioFormatULaw, CODEC_ID_PCM_MULAW },
{ kMicrosoftADPCMFormat, CODEC_ID_ADPCM_MS },
{ kAudioFormatMPEG4AAC, CODEC_ID_AAC },
{ kAudioFormatDTS, CODEC_ID_DTS },
{ kAudioFormatFlashADPCM, CODEC_ID_ADPCM_SWF },
{ 0, CODEC_ID_NONE }
};
enum CodecID FFFourCCToCodecID(OSType formatID)
{
for (int i = 0; kAudioCodecMap[i].codecID != CODEC_ID_NONE; i++) {
if (kAudioCodecMap[i].mFormatID == formatID)
return kAudioCodecMap[i].codecID;
}
return CODEC_ID_NONE;
}
OSType FFCodecIDToFourCC(enum CodecID codecID)
{
for (int i = 0; kAudioCodecMap[i].codecID != CODEC_ID_NONE; i++) {
if (kAudioCodecMap[i].codecID == codecID)
return kAudioCodecMap[i].mFormatID;
}
return CODEC_ID_NONE;
}
OSType FFPixFmtToFourCC(enum PixelFormat inPixFmt)
{
OSType qtPixFmt;
switch (inPixFmt) {
case PIX_FMT_RGB555BE:
qtPixFmt = k16BE555PixelFormat;
break;
case PIX_FMT_RGB24:
qtPixFmt = k24RGBPixelFormat;
break;
case PIX_FMT_ARGB:
qtPixFmt = k32ARGBPixelFormat;
break;
case PIX_FMT_YUV422P:
qtPixFmt = k2vuyPixelFormat;
break;
case PIX_FMT_YUV444P:
qtPixFmt = k4444YpCbCrA8PixelFormat;
break;
default:
return 0;
}
return qtPixFmt;
}