Aegisub/FFmpegSource/ffbase.cpp
Fredrik Mellbin c7a7a52ae6 FFmpegSource 1.13
Originally committed to SVN as r1598.
2007-10-06 20:03:02 +00:00

465 lines
17 KiB
C++

// Copyright (c) 2007 Fredrik Mellbin
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#include "ffmpegsource.h"
int FFBase::FrameFromDTS(int64_t ADTS) {
for (int i = 0; i < (int)FrameToDTS.size(); i++)
if (FrameToDTS[i].DTS == ADTS)
return i;
return -1;
}
int FFBase::ClosestFrameFromDTS(int64_t ADTS) {
int Frame = 0;
int64_t BestDiff = 0xFFFFFFFFFFFFFFLL;
for (int i = 0; i < (int)FrameToDTS.size(); i++) {
int64_t CurrentDiff = FFABS(FrameToDTS[i].DTS - ADTS);
if (CurrentDiff < BestDiff) {
BestDiff = CurrentDiff;
Frame = i;
}
}
return Frame;
}
int FFBase::FindClosestKeyFrame(int AFrame) {
for (int i = AFrame; i > 0; i--)
if (FrameToDTS[i].KeyFrame)
return i;
return 0;
}
bool FFBase::LoadFrameInfoFromFile(const char *AVideoCacheFile, const char *ASource, int AVideoTrack) {
char DefaultCacheFilename[1024];
sprintf(DefaultCacheFilename, "%s.ffv%dcache", ASource, AVideoTrack);
if (!strcmp(AVideoCacheFile, ""))
AVideoCacheFile = DefaultCacheFilename;
FILE *CacheFile = fopen(AVideoCacheFile, "r");
if (!CacheFile)
return false;
if (fscanf(CacheFile, "%d\r\n", &VI.num_frames) <= 0 || VI.num_frames <= 0) {
VI.num_frames = 0;
fclose(CacheFile);
return false;
}
for (int i = 0; i < VI.num_frames; i++) {
int64_t DTSTemp;
int KFTemp;
fscanf(CacheFile, "%lld %d\r\n", &DTSTemp, &KFTemp);
FrameToDTS.push_back(FrameInfo(DTSTemp, KFTemp != 0));
}
fclose(CacheFile);
return true;
}
bool FFBase::SaveFrameInfoToFile(const char *AVideoCacheFile, const char *ASource, int AVideoTrack) {
char DefaultCacheFilename[1024];
sprintf(DefaultCacheFilename, "%s.ffv%dcache", ASource, AVideoTrack);
if (!strcmp(AVideoCacheFile, ""))
AVideoCacheFile = DefaultCacheFilename;
FILE *CacheFile = fopen(AVideoCacheFile, "wb");
if (!CacheFile)
return false;
fprintf(CacheFile, "%d\r\n", VI.num_frames);
for (int i = 0; i < VI.num_frames; i++)
fprintf(CacheFile, "%lld %d\r\n", FrameToDTS[i].DTS, (int)(FrameToDTS[i].KeyFrame ? 1 : 0));
fclose(CacheFile);
return true;
}
bool FFBase::SaveTimecodesToFile(const char *ATimecodeFile, int64_t ScaleD, int64_t ScaleN) {
if (!strcmp(ATimecodeFile, ""))
return true;
FILE *TimecodeFile = fopen(ATimecodeFile, "wb");
if (!TimecodeFile)
return false;
std::set<int64_t> Timecodes;
for (int i = 0; i < VI.num_frames; i++)
Timecodes.insert(FrameToDTS[i].DTS);
fprintf(TimecodeFile, "# timecode format v2\r\n");
for (std::set<int64_t>::iterator Cur=Timecodes.begin(); Cur!=Timecodes.end(); Cur++)
fprintf(TimecodeFile, "%f\r\n", (*Cur * ScaleD) / (double)ScaleN);
fclose(TimecodeFile);
return true;
}
#ifdef FLAC_CACHE
static FLAC__StreamDecoderReadStatus FLACStreamDecoderReadCallback(const FLAC__StreamDecoder *ADecoder, FLAC__byte ABuffer[], size_t *ABytes, FFBase *AOwner) {
if(*ABytes > 0) {
*ABytes = fread(ABuffer, sizeof(FLAC__byte), *ABytes, AOwner->FCFile);
if(ferror(AOwner->FCFile))
return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
else if(*ABytes == 0)
return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
else
return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
} else {
return FLAC__STREAM_DECODER_READ_STATUS_ABORT;
}
}
static FLAC__StreamDecoderSeekStatus FLACStreamDecoderSeekCallback(const FLAC__StreamDecoder *ADecoder, FLAC__uint64 AAbsoluteByteOffset, FFBase *AOwner) {
if(_fseeki64(AOwner->FCFile, AAbsoluteByteOffset, SEEK_SET) < 0)
return FLAC__STREAM_DECODER_SEEK_STATUS_ERROR;
else
return FLAC__STREAM_DECODER_SEEK_STATUS_OK;
}
static FLAC__StreamDecoderTellStatus FLACStreamDecoderTellCallback(const FLAC__StreamDecoder *ADecoder, FLAC__uint64 *AAbsoluteByteOffset, FFBase *AOwner) {
__int64 Pos;
if ((Pos = _ftelli64(AOwner->FCFile)) < 0) {
return FLAC__STREAM_DECODER_TELL_STATUS_ERROR;
} else {
*AAbsoluteByteOffset = (FLAC__uint64)Pos;
return FLAC__STREAM_DECODER_TELL_STATUS_OK;
}
}
static FLAC__StreamDecoderLengthStatus FLACStreamDecoderLengthCallback(const FLAC__StreamDecoder *ADecoder, FLAC__uint64 *AStreamLength, FFBase *AOwner) {
__int64 OriginalPos;
__int64 Length;
if ((OriginalPos = _ftelli64(AOwner->FCFile)) < 0)
return FLAC__STREAM_DECODER_LENGTH_STATUS_ERROR;
_fseeki64(AOwner->FCFile, 0, SEEK_END);
if ((Length = _ftelli64(AOwner->FCFile)) < 0)
return FLAC__STREAM_DECODER_LENGTH_STATUS_ERROR;
_fseeki64(AOwner->FCFile, OriginalPos, SEEK_SET);
*AStreamLength = Length;
return FLAC__STREAM_DECODER_LENGTH_STATUS_OK;
}
static FLAC__bool FLACStreamDecoderEofCallback(const FLAC__StreamDecoder *ADecoder, FFBase *AOwner) {
return feof(AOwner->FCFile) ? true : false;
}
static FLAC__StreamDecoderWriteStatus FLACStreamDecoderWriteCallback(const FLAC__StreamDecoder *ADecoder, const FLAC__Frame *AFrame, const FLAC__int32 *const ABuffer[], FFBase *AOwner) {
unsigned Blocksize = AFrame->header.blocksize;
const VideoInfo VI = AOwner->GetVideoInfo();
int16_t *Buffer = (int16_t *)AOwner->FCBuffer;
int j = 0;
while (AOwner->FCCount > 0 && Blocksize > 0) {
for (int i = 0; i < VI.nchannels; i++)
*Buffer++ = ABuffer[i][j];
j++;
AOwner->FCCount--;
Blocksize--;
}
AOwner->FCBuffer = Buffer;
return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
}
static void FLACStreamDecoderMetadataCallback(const FLAC__StreamDecoder *ADecoder, const FLAC__StreamMetadata *AMetadata, FFBase *AOwner) {
AOwner->FCError = (AMetadata->data.stream_info.total_samples <= 0);
}
static void FLACStreamDecoderErrorCallback(const FLAC__StreamDecoder *ADecoder, FLAC__StreamDecoderErrorStatus AStatus, FFBase *AOwner) {
AOwner->FCError = true;
}
#endif // FLAC_CACHE
bool FFBase::OpenAudioCache(const char *AAudioCacheFile, const char *ASource, int AAudioTrack, IScriptEnvironment *Env) {
char DefaultCacheFilename[1024];
sprintf(DefaultCacheFilename, "%s.ffa%dcache", ASource, AAudioTrack);
if (!strcmp(AAudioCacheFile, ""))
AAudioCacheFile = DefaultCacheFilename;
// Is an empty file?
FCFile = fopen(AAudioCacheFile, "rb");
int64_t CacheSize;
if (FCFile) {
_fseeki64(FCFile, 0, SEEK_END);
CacheSize = _ftelli64(FCFile);
_fseeki64(FCFile, 0, SEEK_SET);
if (CacheSize <= 0) {
fclose(FCFile);
FCFile = NULL;
return false;
}
} else {
return false;
}
#ifdef FLAC_CACHE
// is FLAC?
FLACAudioCache = FLAC__stream_decoder_new();
if (FLAC__stream_decoder_init_stream(FLACAudioCache,
&(FLAC__StreamDecoderReadCallback)FLACStreamDecoderReadCallback,
&(FLAC__StreamDecoderSeekCallback)FLACStreamDecoderSeekCallback,
&(FLAC__StreamDecoderTellCallback)FLACStreamDecoderTellCallback,
&(FLAC__StreamDecoderLengthCallback)FLACStreamDecoderLengthCallback,
&(FLAC__StreamDecoderEofCallback)FLACStreamDecoderEofCallback,
&(FLAC__StreamDecoderWriteCallback)FLACStreamDecoderWriteCallback,
&(FLAC__StreamDecoderMetadataCallback)FLACStreamDecoderMetadataCallback, &(FLAC__StreamDecoderErrorCallback)FLACStreamDecoderErrorCallback, this) == FLAC__STREAM_DECODER_INIT_STATUS_OK) {
FCError = true;
FLAC__stream_decoder_process_until_end_of_metadata(FLACAudioCache);
if (!FCError) {
VI.num_audio_samples = FLAC__stream_decoder_get_total_samples(FLACAudioCache);
AudioCacheType = acFLAC;
return true;
}
}
FLAC__stream_decoder_delete(FLACAudioCache);
FLACAudioCache = NULL;
#endif // FLAC_CACHE
// Raw audio
VI.num_audio_samples = VI.AudioSamplesFromBytes(CacheSize);
AudioCacheType = acRaw;
RawAudioCache = FCFile;
FCFile = NULL;
return true;
}
#ifdef FLAC_CACHE
static FLAC__StreamEncoderWriteStatus FLACStreamEncoderWriteCallback(const FLAC__StreamEncoder *ASncoder, const FLAC__byte ABuffer[], size_t ABytes, unsigned ABamples, unsigned ACurrentFrame, FFBase *AOwner) {
fwrite(ABuffer, sizeof(FLAC__byte), ABytes, AOwner->FCFile);
if(ferror(AOwner->FCFile))
return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR;
else
return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
}
static FLAC__StreamEncoderSeekStatus FLACStreamEncoderSeekCallback(const FLAC__StreamEncoder *AEncoder, FLAC__uint64 AAbsoluteByteOffset, FFBase *AOwner) {
if(_fseeki64(AOwner->FCFile, AAbsoluteByteOffset, SEEK_SET) < 0)
return FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR;
else
return FLAC__STREAM_ENCODER_SEEK_STATUS_OK;
}
static FLAC__StreamEncoderTellStatus FLACStreamEncoderTellCallback(const FLAC__StreamEncoder *AEncoder, FLAC__uint64 *AAbsoluteByteOffset, FFBase *AOwner) {
__int64 Pos;
if((Pos = _ftelli64(AOwner->FCFile)) < 0) {
return FLAC__STREAM_ENCODER_TELL_STATUS_ERROR;
} else {
*AAbsoluteByteOffset = (FLAC__uint64)Pos;
return FLAC__STREAM_ENCODER_TELL_STATUS_OK;
}
}
FLAC__StreamEncoder *FFBase::NewFLACCacheWriter(const char *AAudioCacheFile, const char *ASource, int AAudioTrack, int ACompression, IScriptEnvironment *Env) {
char DefaultCacheFilename[1024];
sprintf(DefaultCacheFilename, "%s.ffa%dcache", ASource, AAudioTrack);
if (!strcmp(AAudioCacheFile, ""))
AAudioCacheFile = DefaultCacheFilename;
FCFile = fopen(AAudioCacheFile, "wb");
if (!FCFile)
Env->ThrowError("FFmpegSource: Failed to open '%s' for writing", AAudioCacheFile);
FLAC__StreamEncoder *FSE;
FSE = FLAC__stream_encoder_new();
FLAC__stream_encoder_set_channels(FSE, VI.nchannels);
FLAC__stream_encoder_set_bits_per_sample(FSE, VI.BytesPerChannelSample() * 8);
FLAC__stream_encoder_set_sample_rate(FSE, VI.audio_samples_per_second);
FLAC__stream_encoder_set_compression_level(FSE, ACompression);
if (FLAC__stream_encoder_init_stream(FSE, &(FLAC__StreamEncoderWriteCallback)FLACStreamEncoderWriteCallback,
&(FLAC__StreamEncoderSeekCallback)FLACStreamEncoderSeekCallback,
&(FLAC__StreamEncoderTellCallback)FLACStreamEncoderTellCallback, NULL, this)
!= FLAC__STREAM_ENCODER_INIT_STATUS_OK)
Env->ThrowError("FFmpegSource: Failed to initialize the FLAC encoder for '%s'", AAudioCacheFile);
return FSE;
}
void FFBase::CloseFLACCacheWriter(FLAC__StreamEncoder *AFSE) {
FLAC__stream_encoder_finish(AFSE);
FLAC__stream_encoder_delete(AFSE);
fclose(FCFile);
FCFile = NULL;
}
#endif // FLAC_CACHE
FILE *FFBase::NewRawCacheWriter(const char *AAudioCacheFile, const char *ASource, int AAudioTrack, IScriptEnvironment *Env) {
char DefaultCacheFilename[1024];
sprintf(DefaultCacheFilename, "%s.ffa%dcache", ASource, AAudioTrack);
if (!strcmp(AAudioCacheFile, ""))
AAudioCacheFile = DefaultCacheFilename;
FILE *RCF = fopen(AAudioCacheFile, "wb");
if (RCF == NULL)
Env->ThrowError("FFmpegSource: Failed to open '%s' for writing", AAudioCacheFile);
return RCF;
}
void FFBase::CloseRawCacheWriter(FILE *ARawCache) {
fclose(ARawCache);
}
void FFBase::InitPP(int AWidth, int AHeight, const char *APPString, int AQuality, int APixelFormat, IScriptEnvironment *Env) {
if (!strcmp(APPString, ""))
return;
if (AQuality < 0 || AQuality > PP_QUALITY_MAX)
Env->ThrowError("FFmpegSource: Quality is out of range");
// Unsafe?
PPMode = pp_get_mode_by_name_and_quality((char *)APPString, AQuality);
if (!PPMode)
Env->ThrowError("FFmpegSource: Invalid postprocesing settings");
int Flags = GetPPCPUFlags(Env);
switch (APixelFormat) {
case PIX_FMT_YUV420P: Flags |= PP_FORMAT_420; break;
case PIX_FMT_YUV422P: Flags |= PP_FORMAT_422; break;
case PIX_FMT_YUV411P: Flags |= PP_FORMAT_411; break;
case PIX_FMT_YUV444P: Flags |= PP_FORMAT_444; break;
default:
Env->ThrowError("FFmpegSource: Input format is not supported for postprocessing");
}
PPContext = pp_get_context(VI.width, VI.height, Flags);
if (avpicture_alloc(&PPPicture, APixelFormat, AWidth, AHeight) < 0)
Env->ThrowError("FFmpegSource: Failed to allocate picture");
}
void FFBase::SetOutputFormat(int ACurrentFormat, IScriptEnvironment *Env) {
int Loss;
int BestFormat = avcodec_find_best_pix_fmt((1 << PIX_FMT_YUVJ420P) | (1 << PIX_FMT_YUV420P) | (1 << PIX_FMT_YUYV422) | (1 << PIX_FMT_RGB32) | (1 << PIX_FMT_BGR24), ACurrentFormat, 1 /* Required to prevent pointless RGB32 => RGB24 conversion */, &Loss);
switch (BestFormat) {
case PIX_FMT_YUVJ420P: // stupid yv12 distinctions, also inexplicably completely undeniably incompatible with all other supported output formats
case PIX_FMT_YUV420P: VI.pixel_type = VideoInfo::CS_I420; break;
case PIX_FMT_YUYV422: VI.pixel_type = VideoInfo::CS_YUY2; break;
case PIX_FMT_RGB32: VI.pixel_type = VideoInfo::CS_BGR32; break;
case PIX_FMT_BGR24: VI.pixel_type = VideoInfo::CS_BGR24; break;
default:
Env->ThrowError("FFmpegSource: No suitable output format found");
}
if (BestFormat != ACurrentFormat) {
ConvertToFormat = BestFormat;
SWS = sws_getContext(VI.width, VI.height, ACurrentFormat, VI.width, VI.height, ConvertToFormat, GetSWSCPUFlags(Env) | SWS_BICUBIC, NULL, NULL, NULL);
}
}
PVideoFrame FFBase::OutputFrame(AVFrame *AFrame, IScriptEnvironment *Env) {
AVPicture *SrcPicture = (AVPicture *)AFrame;
if (PPContext) {
pp_postprocess(AFrame->data, AFrame->linesize, PPPicture.data, PPPicture.linesize, VI.width, VI.height, AFrame->qscale_table, AFrame->qstride, PPMode, PPContext, AFrame->pict_type | (AFrame->qscale_type ? PP_PICT_TYPE_QP2 : 0));
SrcPicture = &PPPicture;
}
PVideoFrame Dst = Env->NewVideoFrame(VI);
if (ConvertToFormat != PIX_FMT_NONE && VI.pixel_type == VideoInfo::CS_I420) {
uint8_t *DstData[3] = {Dst->GetWritePtr(PLANAR_Y), Dst->GetWritePtr(PLANAR_U), Dst->GetWritePtr(PLANAR_V)};
int DstStride[3] = {Dst->GetPitch(PLANAR_Y), Dst->GetPitch(PLANAR_U), Dst->GetPitch(PLANAR_V)};
sws_scale(SWS, SrcPicture->data, SrcPicture->linesize, 0, VI.height, DstData, DstStride);
} else if (ConvertToFormat != PIX_FMT_NONE) {
if (VI.IsRGB()) {
uint8_t *DstData[1] = {Dst->GetWritePtr() + Dst->GetPitch() * (Dst->GetHeight() - 1)};
int DstStride[1] = {-Dst->GetPitch()};
sws_scale(SWS, SrcPicture->data, SrcPicture->linesize, 0, VI.height, DstData, DstStride);
} else {
uint8_t *DstData[1] = {Dst->GetWritePtr()};
int DstStride[1] = {Dst->GetPitch()};
sws_scale(SWS, SrcPicture->data, SrcPicture->linesize, 0, VI.height, DstData, DstStride);
}
} else if (VI.pixel_type == VideoInfo::CS_I420) {
Env->BitBlt(Dst->GetWritePtr(PLANAR_Y), Dst->GetPitch(PLANAR_Y), SrcPicture->data[0], SrcPicture->linesize[0], Dst->GetRowSize(PLANAR_Y), Dst->GetHeight(PLANAR_Y));
Env->BitBlt(Dst->GetWritePtr(PLANAR_U), Dst->GetPitch(PLANAR_U), SrcPicture->data[1], SrcPicture->linesize[1], Dst->GetRowSize(PLANAR_U), Dst->GetHeight(PLANAR_U));
Env->BitBlt(Dst->GetWritePtr(PLANAR_V), Dst->GetPitch(PLANAR_V), SrcPicture->data[2], SrcPicture->linesize[2], Dst->GetRowSize(PLANAR_V), Dst->GetHeight(PLANAR_V));
} else {
if (VI.IsRGB())
Env->BitBlt(Dst->GetWritePtr() + Dst->GetPitch() * (Dst->GetHeight() - 1), -Dst->GetPitch(), SrcPicture->data[0], SrcPicture->linesize[0], Dst->GetRowSize(), Dst->GetHeight());
else
Env->BitBlt(Dst->GetWritePtr(), Dst->GetPitch(), SrcPicture->data[0], SrcPicture->linesize[0], Dst->GetRowSize(), Dst->GetHeight());
}
return Dst;
}
void FFBase::GetAudio(void* Buf, __int64 Start, __int64 Count, IScriptEnvironment* Env) {
if (AudioCacheType == acRaw) {
_fseeki64(RawAudioCache, VI.BytesFromAudioSamples(Start), SEEK_SET);
fread(Buf, 1, VI.BytesFromAudioSamples(Count), RawAudioCache);
#ifdef FLAC_CACHE
} else if (AudioCacheType == acFLAC) {
FCCount = Count;
FCBuffer = Buf;
FLAC__stream_decoder_seek_absolute(FLACAudioCache, Start);
while (FCCount > 0)
FLAC__stream_decoder_process_single(FLACAudioCache);
#endif // FLAC_CACHE
} else {
Env->ThrowError("FFmpegSource: Audio requested but none available");
}
}
FFBase::FFBase() {
memset(&VI, 0, sizeof(VI));
AudioCacheType = acNone;
FCError = false;
RawAudioCache = NULL;
PPContext = NULL;
PPMode = NULL;
SWS = NULL;
LastFrameNum = -1;
DecodingBuffer = new uint8_t[AVCODEC_MAX_AUDIO_FRAME_SIZE];
#ifdef FLAC_CACHE
FLACAudioCache = NULL;
FLACBuffer = new FLAC__int32[AVCODEC_MAX_AUDIO_FRAME_SIZE];
#endif // FLAC_CACHE
FCFile = NULL;
ConvertToFormat = PIX_FMT_NONE;
memset(&PPPicture, 0, sizeof(PPPicture));
DecodeFrame = avcodec_alloc_frame();
}
FFBase::~FFBase() {
delete [] DecodingBuffer;
if (RawAudioCache)
fclose(RawAudioCache);
#ifdef FLAC_CACHE
delete [] FLACBuffer;
if (FLACAudioCache) {
FLAC__stream_decoder_finish(FLACAudioCache);
FLAC__stream_decoder_delete(FLACAudioCache);
}
#endif // FLAC_CACHE
if (FCFile)
fclose(FCFile);
if (SWS)
sws_freeContext(SWS);
if (PPMode)
pp_free_mode(PPMode);
if (PPContext)
pp_free_context(PPContext);
avpicture_free(&PPPicture);
av_free(DecodeFrame);
}