From 16786725c3277673211ab8b823b96f0a21247c32 Mon Sep 17 00:00:00 2001 From: Fredrik Mellbin Date: Mon, 2 Jul 2007 21:36:21 +0000 Subject: [PATCH] FFmpegSource 1.2 Originally committed to SVN as r1335. --- FFmpegSource/ffmpegsource.cpp | 565 ++++++++++++++------------------- FFmpegSource/ffmpegsource.html | 92 ++++++ FFmpegSource/ffmpegsource.txt | 32 -- FFmpegSource/matroskacodecs.c | 206 ++++++++++++ 4 files changed, 530 insertions(+), 365 deletions(-) create mode 100644 FFmpegSource/ffmpegsource.html delete mode 100644 FFmpegSource/ffmpegsource.txt create mode 100644 FFmpegSource/matroskacodecs.c diff --git a/FFmpegSource/ffmpegsource.cpp b/FFmpegSource/ffmpegsource.cpp index c78f8d1e3..aa9ea6827 100644 --- a/FFmpegSource/ffmpegsource.cpp +++ b/FFmpegSource/ffmpegsource.cpp @@ -2,10 +2,7 @@ #include #include #include -#include - #include -#include #include #include #include @@ -20,6 +17,7 @@ extern "C" { #include "MatroskaParser.h" #include "avisynth.h" #include "stdiostream.c" +#include "matroskacodecs.c" class FFBase : public IClip { private: @@ -29,9 +27,64 @@ private: protected: VideoInfo VI; + struct FrameInfo { + int64_t DTS; + bool KeyFrame; + + FrameInfo(int64_t _DTS, bool _KeyFrame) : DTS(_DTS), KeyFrame(_KeyFrame) {}; + }; + + std::vector FrameToDTS; + + int FindClosestKeyFrame(int Frame) { + for (unsigned int i = Frame; i > 0; i--) + if (FrameToDTS[i].KeyFrame) + return i; + return 0; + } + + int FrameFromDTS(int64_t DTS) { + for (unsigned int i = 0; i < FrameToDTS.size(); i++) + if (FrameToDTS[i].DTS == DTS) + return i; + return -1; + } + + int ClosestFrameFromDTS(int64_t DTS) { + int Frame = 0; + int64_t BestDiff = 0xFFFFFFFFFFFFFF; + for (unsigned int i = 0; i < FrameToDTS.size(); i++) { + int64_t CurrentDiff = FFABS(FrameToDTS[i].DTS - DTS); + if (CurrentDiff < BestDiff) { + BestDiff = CurrentDiff; + Frame = i; + } + } + return Frame; + } + + bool LoadFrameInfoFromFile(FILE *CacheFile) { + if (ftell(CacheFile)) { + rewind(CacheFile); + + fscanf(CacheFile, "%d\n", &VI.num_frames); + + for (int i = 0; i < VI.num_frames; i++) { + int64_t DTSTemp; + int KFTemp; + fscanf(CacheFile, "%lld %d\n", &DTSTemp, &KFTemp); + FrameToDTS.push_back(FrameInfo(DTSTemp, KFTemp != 0)); + } + + return true; + } + + return false; + } + void SetOutputFormat(int CurrentFormat, IScriptEnvironment *Env) { int Loss; - int BestFormat = avcodec_find_best_pix_fmt((1 << PIX_FMT_YUV420P) | (1 << PIX_FMT_YUYV422) | (1 << PIX_FMT_RGB32) | (1 << PIX_FMT_BGR24), CurrentFormat, 1, &Loss); + int BestFormat = avcodec_find_best_pix_fmt((1 << PIX_FMT_YUV420P) | (1 << PIX_FMT_YUYV422) | (1 << PIX_FMT_RGB32) | (1 << PIX_FMT_BGR24), CurrentFormat, 1 /* Required to prevent pointless RGB32 => RGB24 conversion */, &Loss); switch (BestFormat) { case PIX_FMT_YUV420P: VI.pixel_type = VideoInfo::CS_I420; break; @@ -45,7 +98,7 @@ protected: if (BestFormat != CurrentFormat) { ConvertFromFormat = CurrentFormat; ConvertToFormat = BestFormat; - SWS = sws_getContext(VI.width, VI.height, ConvertFromFormat, VI.width, VI.height, ConvertToFormat, SWS_LANCZOS, NULL, NULL, NULL); + SWS = sws_getContext(VI.width, VI.height, ConvertFromFormat, VI.width, VI.height, ConvertToFormat, SWS_BICUBIC, NULL, NULL, NULL); } } @@ -76,6 +129,7 @@ protected: else Env->BitBlt(Dst->GetWritePtr(), Dst->GetPitch(), Frame->data[0], Frame->linesize[0], Dst->GetRowSize(), Dst->GetHeight()); } + return Dst; } @@ -100,232 +154,18 @@ private: AVFrame *Frame; int CurrentFrame; - struct FFMKVFrameInfo { - ulonglong DTS; - bool KeyFrame; - }; - - std::vector FrameToDTS; - std::map DTSToFrame; - StdIoStream ST; MatroskaFile *MF; char ErrorMessage[256]; unsigned int BufferSize; - void *Buffer; + uint8_t *Buffer; CompressedStream *CS; - int ReadNextFrame(AVFrame *Frame, ulonglong *StartTime, IScriptEnvironment* Env); - - CodecID MatroskaToFFCodecID(TrackInfo *TI) { - char *Codec = TI->CodecID; - // fourcc list from ffdshow - if (!strcmp(Codec, "V_MS/VFW/FOURCC")) { - switch (((BITMAPINFOHEADER *)TI->CodecPrivate)->biCompression) { - case MAKEFOURCC('F', 'F', 'D', 'S'): - case MAKEFOURCC('F', 'V', 'F', 'W'): - case MAKEFOURCC('X', 'V', 'I', 'D'): - case MAKEFOURCC('D', 'I', 'V', 'X'): - case MAKEFOURCC('D', 'X', '5', '0'): - case MAKEFOURCC('M', 'P', '4', 'V'): - case MAKEFOURCC('3', 'I', 'V', 'X'): - case MAKEFOURCC('W', 'V', '1', 'F'): - case MAKEFOURCC('F', 'M', 'P', '4'): - case MAKEFOURCC('S', 'M', 'P', '4'): - return CODEC_ID_MPEG4; - case MAKEFOURCC('D', 'I', 'V', '3'): - case MAKEFOURCC('D', 'V', 'X', '3'): - case MAKEFOURCC('M', 'P', '4', '3'): - return CODEC_ID_MSMPEG4V3; - case MAKEFOURCC('M', 'P', '4', '2'): - return CODEC_ID_MSMPEG4V2; - case MAKEFOURCC('M', 'P', '4', '1'): - return CODEC_ID_MSMPEG4V1; - case MAKEFOURCC('W', 'M', 'V', '1'): - return CODEC_ID_WMV1; - case MAKEFOURCC('W', 'M', 'V', '2'): - return CODEC_ID_WMV2; - case MAKEFOURCC('W', 'M', 'V', '3'): - return CODEC_ID_WMV3; -/* - case MAKEFOURCC('M', 'S', 'S', '1'): - case MAKEFOURCC('M', 'S', 'S', '2'): - case MAKEFOURCC('W', 'V', 'P', '2'): - case MAKEFOURCC('W', 'M', 'V', 'P'): - return CODEC_ID_WMV9_LIB; -*/ - case MAKEFOURCC('W', 'V', 'C', '1'): - return CODEC_ID_VC1; - case MAKEFOURCC('V', 'P', '5', '0'): - return CODEC_ID_VP5; - case MAKEFOURCC('V', 'P', '6', '0'): - case MAKEFOURCC('V', 'P', '6', '1'): - case MAKEFOURCC('V', 'P', '6', '2'): - return CODEC_ID_VP6; - case MAKEFOURCC('V', 'P', '6', 'F'): - case MAKEFOURCC('F', 'L', 'V', '4'): - return CODEC_ID_VP6F; - case MAKEFOURCC('C', 'A', 'V', 'S'): - return CODEC_ID_CAVS; - case MAKEFOURCC('M', 'P', 'G', '1'): - case MAKEFOURCC('M', 'P', 'E', 'G'): - return CODEC_ID_MPEG2VIDEO; // not a typo - case MAKEFOURCC('M', 'P', 'G', '2'): - case MAKEFOURCC('E', 'M', '2', 'V'): - case MAKEFOURCC('M', 'M', 'E', 'S'): - return CODEC_ID_MPEG2VIDEO; - case MAKEFOURCC('H', '2', '6', '3'): - case MAKEFOURCC('S', '2', '6', '3'): - case MAKEFOURCC('L', '2', '6', '3'): - case MAKEFOURCC('M', '2', '6', '3'): - case MAKEFOURCC('U', '2', '6', '3'): - case MAKEFOURCC('X', '2', '6', '3'): - return CODEC_ID_H263; - case MAKEFOURCC('H', '2', '6', '4'): - case MAKEFOURCC('X', '2', '6', '4'): - case MAKEFOURCC('V', 'S', 'S', 'H'): - case MAKEFOURCC('D', 'A', 'V', 'C'): - case MAKEFOURCC('P', 'A', 'V', 'C'): - case MAKEFOURCC('A', 'V', 'C', '1'): - return CODEC_ID_H264; - case MAKEFOURCC('M', 'J', 'P', 'G'): - case MAKEFOURCC('L', 'J', 'P', 'G'): - case MAKEFOURCC('M', 'J', 'L', 'S'): - case MAKEFOURCC('J', 'P', 'E', 'G'): // questionable fourcc? - case MAKEFOURCC('A', 'V', 'R', 'N'): - case MAKEFOURCC('M', 'J', 'P', 'A'): - return CODEC_ID_MJPEG; - case MAKEFOURCC('D', 'V', 'S', 'D'): - case MAKEFOURCC('D', 'V', '2', '5'): - case MAKEFOURCC('D', 'V', '5', '0'): - case MAKEFOURCC('C', 'D', 'V', 'C'): - case MAKEFOURCC('C', 'D', 'V', '5'): - case MAKEFOURCC('D', 'V', 'I', 'S'): - case MAKEFOURCC('P', 'D', 'V', 'C'): - return CODEC_ID_DVVIDEO; - case MAKEFOURCC('H', 'F', 'Y', 'U'): - case MAKEFOURCC('F', 'F', 'V', 'H'): - return CODEC_ID_HUFFYUV; - case MAKEFOURCC('C', 'Y', 'U', 'V'): - return CODEC_ID_CYUV; - case MAKEFOURCC('A', 'S', 'V', '1'): - return CODEC_ID_ASV1; - case MAKEFOURCC('A', 'S', 'V', '2'): - return CODEC_ID_ASV2; - case MAKEFOURCC('V', 'C', 'R', '1'): - return CODEC_ID_VCR1; - case MAKEFOURCC('T', 'H', 'E', 'O'): - return CODEC_ID_THEORA; - case MAKEFOURCC('S', 'V', 'Q', '1'): - return CODEC_ID_SVQ1; - case MAKEFOURCC('S', 'V', 'Q', '3'): - return CODEC_ID_SVQ3; - case MAKEFOURCC('R', 'P', 'Z', 'A'): - return CODEC_ID_RPZA; - case MAKEFOURCC('F', 'F', 'V', '1'): - return CODEC_ID_FFV1; - case MAKEFOURCC('V', 'P', '3', '1'): - return CODEC_ID_VP3; - case MAKEFOURCC('R', 'L', 'E', '8'): - return CODEC_ID_MSRLE; - case MAKEFOURCC('M', 'S', 'Z', 'H'): - return CODEC_ID_MSZH; - case MAKEFOURCC('Z', 'L', 'I', 'B'): - return CODEC_ID_FLV1; - case MAKEFOURCC('F', 'L', 'V', '1'): - return CODEC_ID_ZLIB; -/* - case MAKEFOURCC('P', 'N', 'G', '1'): - return CODEC_ID_COREPNG; -*/ - case MAKEFOURCC('M', 'P', 'N', 'G'): - return CODEC_ID_PNG; -/* - case MAKEFOURCC('A', 'V', 'I', 'S'): - return CODEC_ID_AVISYNTH; -*/ - case MAKEFOURCC('C', 'R', 'A', 'M'): - return CODEC_ID_MSVIDEO1; - case MAKEFOURCC('R', 'T', '2', '1'): - return CODEC_ID_INDEO2; - case MAKEFOURCC('I', 'V', '3', '2'): - case MAKEFOURCC('I', 'V', '3', '1'): - return CODEC_ID_INDEO3; - case MAKEFOURCC('C', 'V', 'I', 'D'): - return CODEC_ID_CINEPAK; - case MAKEFOURCC('R', 'V', '1', '0'): - return CODEC_ID_RV10; - case MAKEFOURCC('R', 'V', '2', '0'): - return CODEC_ID_RV20; - case MAKEFOURCC('8', 'B', 'P', 'S'): - return CODEC_ID_8BPS; - case MAKEFOURCC('Q', 'R', 'L', 'E'): - return CODEC_ID_QTRLE; - case MAKEFOURCC('D', 'U', 'C', 'K'): - return CODEC_ID_TRUEMOTION1; - case MAKEFOURCC('T', 'M', '2', '0'): - return CODEC_ID_TRUEMOTION2; - case MAKEFOURCC('T', 'S', 'C', 'C'): - return CODEC_ID_TSCC; - case MAKEFOURCC('S', 'N', 'O', 'W'): - return CODEC_ID_SNOW; - case MAKEFOURCC('Q', 'P', 'E', 'G'): - case MAKEFOURCC('Q', '1', '_', '0'): - case MAKEFOURCC('Q', '1', '_', '1'): - return CODEC_ID_QPEG; - case MAKEFOURCC('H', '2', '6', '1'): - case MAKEFOURCC('M', '2', '6', '1'): - return CODEC_ID_H261; - case MAKEFOURCC('L', 'O', 'C', 'O'): - return CODEC_ID_LOCO; - case MAKEFOURCC('W', 'N', 'V', '1'): - return CODEC_ID_WNV1; - case MAKEFOURCC('C', 'S', 'C', 'D'): - return CODEC_ID_CSCD; - case MAKEFOURCC('Z', 'M', 'B', 'V'): - return CODEC_ID_ZMBV; - case MAKEFOURCC('U', 'L', 'T', 'I'): - return CODEC_ID_ULTI; - case MAKEFOURCC('V', 'I', 'X', 'L'): - return CODEC_ID_VIXL; - case MAKEFOURCC('A', 'A', 'S', 'C'): - return CODEC_ID_AASC; - case MAKEFOURCC('F', 'P', 'S', '1'): - return CODEC_ID_FRAPS; - default: - return CODEC_ID_NONE; - } - } else if (!strcmp(Codec, "V_MPEG4/ISO/AVC")) - return CODEC_ID_H264; - else if (!strcmp(Codec, "V_MPEG4/ISO/ASP")) - return CODEC_ID_MPEG4; - else if (!strcmp(Codec, "V_MPEG2")) - return CODEC_ID_MPEG2VIDEO; - else if (!strcmp(Codec, "V_MPEG1")) - return CODEC_ID_MPEG2VIDEO; // still not a typo - else if (!strcmp(Codec, "V_SNOW")) - return CODEC_ID_SNOW; - else if (!strcmp(Codec, "V_THEORA")) - return CODEC_ID_THEORA; - else if (!strncmp(Codec, "V_REAL/RV", 9)) { - switch (Codec[9]) { - case '1': - return CODEC_ID_RV10; - case '2': - return CODEC_ID_RV20; - case '3': - return CODEC_ID_RV30; - case '4': - return CODEC_ID_RV40; - default: - return CODEC_ID_NONE; - } - } else - return CODEC_ID_NONE; - } + unsigned int ReadNextFrame(int64_t *FirstStartTime, IScriptEnvironment *Env); + int DecodeNextFrame(AVFrame *Frame, int64_t *FirstStartTime, IScriptEnvironment* Env); public: - FFMKVSource(const char *Source, int Track, FILE *Timecodes, IScriptEnvironment* Env) { + FFMKVSource(const char *Source, int Track, FILE *Timecodes, bool Cache, FILE *CacheFile, IScriptEnvironment* Env) { BufferSize = 0; Buffer = NULL; Frame = NULL; @@ -342,16 +182,16 @@ public: ST.base.memfree = (void (__cdecl *)(InputStream *,void *)) StdIoFree; ST.base.progress = (int (__cdecl *)(InputStream *,ulonglong,ulonglong))StdIoProgress; - ST.fp = fopen(Source ,"rb"); + ST.fp = fopen(Source, "rb"); if (ST.fp == NULL) - Env->ThrowError("FFmpegSource: Can't open '%s': %s\n", Source, strerror(errno)); + Env->ThrowError("FFmpegSource: Can't open '%s': %s", Source, strerror(errno)); setvbuf(ST.fp, NULL, _IOFBF, CACHESIZE); MF = mkv_OpenEx(&ST.base, 0, 0, ErrorMessage, sizeof(ErrorMessage)); if (MF == NULL) { fclose(ST.fp); - Env->ThrowError("FFmpegSource: Can't parse Matroska file: %s\n", ErrorMessage); + Env->ThrowError("FFmpegSource: Can't parse Matroska file: %s", ErrorMessage); } if (Track < 0) @@ -364,8 +204,8 @@ public: if (Track < 0) Env->ThrowError("FFmpegSource: No video track found"); - if ((unsigned)Track >= mkv_GetNumTracks(MF)) - Env->ThrowError("FFmpegSource: Invalid track number: %d\n", Track); + if ((unsigned int)Track >= mkv_GetNumTracks(MF)) + Env->ThrowError("FFmpegSource: Invalid track number: %d", Track); TrackInfo *TI = mkv_GetTrackInfo(MF, Track); @@ -377,7 +217,7 @@ public: if (TI->CompEnabled) { CS = cs_Create(MF, Track, ErrorMessage, sizeof(ErrorMessage)); if (CS == NULL) - Env->ThrowError("FFmpegSource: Can't create decompressor: %s\n", ErrorMessage); + Env->ThrowError("FFmpegSource: Can't create decompressor: %s", ErrorMessage); } avcodec_get_context_defaults(&CodecContext); @@ -385,10 +225,10 @@ public: CodecContext.extradata_size = TI->CodecPrivateSize; Codec = avcodec_find_decoder(MatroskaToFFCodecID(TI)); - if(Codec == NULL) + if (Codec == NULL) Env->ThrowError("FFmpegSource: Codec not found"); - if(avcodec_open(&CodecContext, Codec) < 0) + if (avcodec_open(&CodecContext, Codec) < 0) Env->ThrowError("FFmpegSource: Could not open codec"); VI.image_type = VideoInfo::IT_TFF; @@ -399,24 +239,30 @@ public: SetOutputFormat(CodecContext.pix_fmt, Env); - unsigned TrackNumber, FrameSize, FrameFlags; - ulonglong StartTime, EndTime, FilePos; + // Needs to be indexed? + if (!(Cache && LoadFrameInfoFromFile(CacheFile))) { + unsigned int TrackNumber, FrameSize, FrameFlags; + uint64_t StartTime, EndTime, FilePos; - while (mkv_ReadFrame(MF, 0, &TrackNumber, &StartTime, &EndTime, &FilePos, &FrameSize, &FrameFlags) == 0) { - FFMKVFrameInfo FI; - FI.DTS = StartTime; - FI.KeyFrame = (FrameFlags & FRAME_KF) != 0; + while (mkv_ReadFrame(MF, 0, &TrackNumber, &StartTime, &EndTime, &FilePos, &FrameSize, &FrameFlags) == 0) { + FrameToDTS.push_back(FrameInfo(StartTime, (FrameFlags & FRAME_KF) != 0)); + VI.num_frames++; + } - FrameToDTS.push_back(FI); - DTSToFrame[StartTime] = VI.num_frames; - if (Timecodes) - fprintf(Timecodes, "%f\n", (StartTime * mkv_TruncFloat(TI->TimecodeScale)) / (double)(1000000)); - VI.num_frames++; + mkv_Seek(MF, FrameToDTS[0].DTS, MKVF_SEEK_TO_PREV_KEYFRAME); + + if (Cache) { + fprintf(CacheFile, "%d\n", VI.num_frames); + for (int i = 0; i < VI.num_frames; i++) + fprintf(CacheFile, "%lld %d\n", FrameToDTS[i].DTS, (int)(FrameToDTS[i].KeyFrame ? 1 : 0)); + } } - Frame = avcodec_alloc_frame(); + if (Timecodes) + for (int i = 0; i < VI.num_frames; i++) + fprintf(Timecodes, "%f\n", (FrameToDTS[i].DTS * mkv_TruncFloat(TI->TimecodeScale)) / (double)(1000000)); - mkv_Seek(MF, FrameToDTS[0].DTS, MKVF_SEEK_TO_PREV_KEYFRAME); + Frame = avcodec_alloc_frame(); } ~FFMKVSource() { @@ -430,89 +276,104 @@ public: PVideoFrame __stdcall GetFrame(int n, IScriptEnvironment* Env); }; -int FFMKVSource::ReadNextFrame(AVFrame *Frame, ulonglong *StartTime, IScriptEnvironment* Env) { - unsigned TrackNumber, FrameFlags, FrameSize; - ulonglong EndTime, FilePos, StartTime2; - *StartTime = -1; - int FrameFinished = 0; - int Ret = -1; +unsigned int FFMKVSource::ReadNextFrame(int64_t *FirstStartTime, IScriptEnvironment *Env) { + unsigned int TrackNumber, FrameFlags, FrameSize; + uint64_t EndTime, FilePos, StartTime; + *FirstStartTime = -1; - while (mkv_ReadFrame(MF, 0, &TrackNumber, &StartTime2, &EndTime, &FilePos, &FrameSize, &FrameFlags) == 0) { - if ((longlong)*StartTime < 0) - *StartTime = StartTime2; + while (mkv_ReadFrame(MF, 0, &TrackNumber, &StartTime, &EndTime, &FilePos, &FrameSize, &FrameFlags) == 0) { + if (*FirstStartTime < 0) + *FirstStartTime = StartTime; if (CS) { - char CSBuffer[1024]; + char CSBuffer[4096]; + + int DecompressedFrameSize = 0; cs_NextFrame(CS, FilePos, FrameSize); + for (;;) { int ReadBytes = cs_ReadData(CS, CSBuffer, sizeof(CSBuffer)); if (ReadBytes < 0) - Env->ThrowError("FFmpegSource: Error decompressing data: %s\n", cs_GetLastError(CS)); + Env->ThrowError("FFmpegSource: Error decompressing data: %s", cs_GetLastError(CS)); if (ReadBytes == 0) - break; - Ret = avcodec_decode_video(&CodecContext, Frame, &FrameFinished, (uint8_t *)CSBuffer, ReadBytes); - if (FrameFinished) - goto Done; + return DecompressedFrameSize; + + if (BufferSize < DecompressedFrameSize + ReadBytes) { + BufferSize = FrameSize; + Buffer = (uint8_t *)realloc(Buffer, BufferSize); + if (Buffer == NULL) + Env->ThrowError("FFmpegSource: Out of memory"); + } + + memcpy(Buffer + DecompressedFrameSize, CSBuffer, ReadBytes); + DecompressedFrameSize += ReadBytes; } } else { - size_t ReadBytes; - if (fseek(ST.fp, FilePos, SEEK_SET)) - Env->ThrowError("FFmpegSource: fseek(): %s\n", strerror(errno)); + Env->ThrowError("FFmpegSource: fseek(): %s", strerror(errno)); if (BufferSize < FrameSize) { BufferSize = FrameSize; - Buffer = realloc(Buffer, BufferSize); + Buffer = (uint8_t *)realloc(Buffer, BufferSize); if (Buffer == NULL) - Env->ThrowError("FFmpegSource: Out of memory\n"); + Env->ThrowError("FFmpegSource: Out of memory"); } - ReadBytes = fread(Buffer, 1, FrameSize, ST.fp); + size_t ReadBytes = fread(Buffer, 1, FrameSize, ST.fp); if (ReadBytes != FrameSize) { if (ReadBytes == 0) { if (feof(ST.fp)) - fprintf(stderr, "FFmpegSource: Unexpected EOF while reading frame\n"); + Env->ThrowError("FFmpegSource: Unexpected EOF while reading frame"); else - fprintf(stderr, "FFmpegSource: Error reading frame: %s\n", strerror(errno)); + Env->ThrowError("FFmpegSource: Error reading frame: %s", strerror(errno)); } else - fprintf(stderr,"FFmpegSource: Short read while reading frame\n"); - goto Done; + Env->ThrowError("FFmpegSource: Short read while reading frame"); + return 0; } - Ret = avcodec_decode_video(&CodecContext, Frame, &FrameFinished, (uint8_t *)Buffer, FrameSize); - - if (FrameFinished) - goto Done; + return FrameSize; } } -Done: + return 0; +} + +int FFMKVSource::DecodeNextFrame(AVFrame *Frame, int64_t *FirstStartTime, IScriptEnvironment* Env) { + int FrameFinished = 0; + int Ret = -1; + int FrameSize; + int64_t TempStartTime = -1; + + while (FrameSize = ReadNextFrame(&TempStartTime, Env)) { + if (*FirstStartTime < 0) + *FirstStartTime = TempStartTime; + Ret = avcodec_decode_video(&CodecContext, Frame, &FrameFinished, Buffer, FrameSize); + + if (FrameFinished) + break; + } + return Ret; } PVideoFrame __stdcall FFMKVSource::GetFrame(int n, IScriptEnvironment* Env) { bool HasSeeked = false; - bool HasBiggerKF = false; - for (int i = CurrentFrame + 1; i <= n; i++) - if (FrameToDTS[i].KeyFrame) { - HasBiggerKF = true; - break; - } - - if (n < CurrentFrame || HasBiggerKF) { + if (n < CurrentFrame || FindClosestKeyFrame(n) > CurrentFrame) { mkv_Seek(MF, FrameToDTS[n].DTS, MKVF_SEEK_TO_PREV_KEYFRAME); avcodec_flush_buffers(&CodecContext); HasSeeked = true; } do { - ulonglong StartTime; - int Ret = ReadNextFrame(Frame, &StartTime, Env); + int64_t StartTime; + int Ret = DecodeNextFrame(Frame, &StartTime, Env); if (HasSeeked) { - CurrentFrame = DTSToFrame[StartTime]; HasSeeked = false; + + if (StartTime < 0 || (CurrentFrame = FrameFromDTS(StartTime)) < 0) + Env->ThrowError("FFmpegSource: Frame accurate seeking not possible in this file"); } CurrentFrame++; @@ -529,19 +390,18 @@ private: AVFrame *Frame; int Track; int CurrentFrame; - std::vector FrameToDTS; - std::map DTSToFrame; - bool ForceSeek; + int SeekMode; - int ReadNextFrame(AVFrame *Frame, int64_t *DTS); + int DecodeNextFrame(AVFrame *Frame, int64_t *DTS); public: - FFmpegSource(const char *Source, int _Track, bool _ForceSeek, FILE *Timecodes, IScriptEnvironment* Env) : Track(_Track), ForceSeek(_ForceSeek) { + FFmpegSource(const char *Source, int _Track, int _SeekMode, FILE *Timecodes, bool Cache, FILE *CacheFile, IScriptEnvironment* Env) : Track(_Track), SeekMode(_SeekMode) { CurrentFrame = 0; + Frame = NULL; - if(av_open_input_file(&FormatContext, Source, NULL, 0, NULL) != 0) + if (av_open_input_file(&FormatContext, Source, NULL, 0, NULL) != 0) Env->ThrowError("FFmpegSource: Couldn't open \"%s\"", Source); - if(av_find_stream_info(FormatContext) < 0) + if (av_find_stream_info(FormatContext) < 0) Env->ThrowError("FFmpegSource: Couldn't find stream information"); if (Track >= (int)FormatContext->nb_streams) @@ -574,7 +434,7 @@ public: VI.height = CodecContext->height; VI.fps_denominator = FormatContext->streams[Track]->time_base.num; VI.fps_numerator = FormatContext->streams[Track]->time_base.den; - VI.num_frames = FormatContext->streams[Track]->duration; + VI.num_frames = (int)FormatContext->streams[Track]->duration; // sanity check framerate if (VI.fps_denominator > VI.fps_numerator || VI.fps_denominator <= 0 || VI.fps_numerator <= 0) { @@ -584,30 +444,32 @@ public: SetOutputFormat(CodecContext->pix_fmt, Env); - // skip indexing for avi - if (!strcmp(FormatContext->iformat->name, "avi") && !Timecodes) { - for (int i = 0; i < VI.num_frames; i++) { - FrameToDTS.push_back(i); - DTSToFrame[i] = i; - } - } else { + // Needs to be indexed? + if (!(Cache && LoadFrameInfoFromFile(CacheFile))) { AVPacket Packet; VI.num_frames = 0; while (av_read_frame(FormatContext, &Packet) >= 0) { if (Packet.stream_index == Track) { - FrameToDTS.push_back(Packet.dts); - DTSToFrame[Packet.dts] = VI.num_frames; - if (Timecodes) - fprintf(Timecodes, "%f\n", (Packet.dts * FormatContext->streams[Track]->time_base.num * 1000) / (double)(FormatContext->streams[Track]->time_base.den)); + FrameToDTS.push_back(FrameInfo(Packet.dts, (Packet.flags & PKT_FLAG_KEY) != 0)); VI.num_frames++; } av_free_packet(&Packet); } + + av_seek_frame(FormatContext, Track, 0, AVSEEK_FLAG_BACKWARD); + + if (Cache) { + fprintf(CacheFile, "%d\n", VI.num_frames); + for (int i = 0; i < VI.num_frames; i++) + fprintf(CacheFile, "%lld %d\n", FrameToDTS[i].DTS, (int)(FrameToDTS[i].KeyFrame ? 1 : 0)); + } } - Frame = avcodec_alloc_frame(); + if (Timecodes) + for (int i = 0; i < VI.num_frames; i++) + fprintf(Timecodes, "%f\n", (FrameToDTS[i].DTS * FormatContext->streams[Track]->time_base.num * 1000) / (double)(FormatContext->streams[Track]->time_base.den)); - av_seek_frame(FormatContext, Track, 0, AVSEEK_FLAG_BACKWARD); + Frame = avcodec_alloc_frame(); } ~FFmpegSource() { @@ -619,7 +481,7 @@ public: PVideoFrame __stdcall GetFrame(int n, IScriptEnvironment* Env); }; -int FFmpegSource::ReadNextFrame(AVFrame *Frame, int64_t *DTS) { +int FFmpegSource::DecodeNextFrame(AVFrame *Frame, int64_t *DTS) { AVPacket Packet; int FrameFinished = 0; int Ret = -1; @@ -627,7 +489,6 @@ int FFmpegSource::ReadNextFrame(AVFrame *Frame, int64_t *DTS) { while (av_read_frame(FormatContext, &Packet) >= 0) { if (Packet.stream_index == Track) { - Ret = avcodec_decode_video(CodecContext, Frame, &FrameFinished, Packet.data, Packet.size); if (*DTS < 0) @@ -646,28 +507,44 @@ int FFmpegSource::ReadNextFrame(AVFrame *Frame, int64_t *DTS) { PVideoFrame __stdcall FFmpegSource::GetFrame(int n, IScriptEnvironment* Env) { bool HasSeeked = false; - int IndexPosition = av_index_search_timestamp(FormatContext->streams[Track], FrameToDTS[n], AVSEEK_FLAG_BACKWARD); - int64_t NearestIndexDTS = -1; - if (IndexPosition >= 0) - NearestIndexDTS = FormatContext->streams[Track]->index_entries[IndexPosition].timestamp; - - if (n < CurrentFrame || NearestIndexDTS > FrameToDTS[CurrentFrame] || (ForceSeek && IndexPosition == -1 && n > CurrentFrame + 10)) { - av_seek_frame(FormatContext, Track, FrameToDTS[n], AVSEEK_FLAG_BACKWARD); - avcodec_flush_buffers(CodecContext); - HasSeeked = true; + if (SeekMode == 0) { + if (n < CurrentFrame) { + av_seek_frame(FormatContext, Track, 0, AVSEEK_FLAG_BACKWARD); + avcodec_flush_buffers(CodecContext); + CurrentFrame = 0; + } + } else { + if (n < CurrentFrame || FindClosestKeyFrame(n) > CurrentFrame || (SeekMode == 3 && n > CurrentFrame + 10)) { + av_seek_frame(FormatContext, Track, (SeekMode == 3) ? FrameToDTS[n].DTS : FrameToDTS[FindClosestKeyFrame(n)].DTS, AVSEEK_FLAG_BACKWARD); + avcodec_flush_buffers(CodecContext); + HasSeeked = true; + } } do { int64_t DTS; - int Ret = ReadNextFrame(Frame, &DTS); + int Ret = DecodeNextFrame(Frame, &DTS); if (HasSeeked) { - CurrentFrame = DTSToFrame[DTS]; - HasSeeked = DTS < 0; + HasSeeked = false; + + // Is the seek destination time known? Does it belong to a frame? + if (DTS < 0 || (CurrentFrame = FrameFromDTS(DTS)) < 0) { + switch (SeekMode) { + case 1: + Env->ThrowError("FFmpegSource: Frame accurate seeking not possible in this file"); + case 2: + case 3: + CurrentFrame = ClosestFrameFromDTS(DTS); + break; + default: + Env->ThrowError("FFmpegSource: Failed assertion"); + } + } } CurrentFrame++; - } while (CurrentFrame <= n || HasSeeked); + } while (CurrentFrame <= n); return OutputFrame(Frame, Env); } @@ -676,19 +553,22 @@ AVSValue __cdecl CreateFFmpegSource(AVSValue Args, void* UserData, IScriptEnviro if (!Args[0].Defined()) Env->ThrowError("FFmpegSource: No source specified"); - av_register_all(); + // Generate default cache filename + char DefaultCacheFilename[MAX_PATH]; + strcpy(DefaultCacheFilename, Args[0].AsString()); + strcat(DefaultCacheFilename, ".ffcache"); - AVFormatContext *FormatContext; + const char *Source = Args[0].AsString(); + int Track = Args[1].AsInt(-1); + int SeekMode = Args[2].AsInt(1); + const char *Timecodes = Args[3].AsString(""); + bool Cache = Args[4].AsBool(true); + const char *CacheFilename = Args[5].AsString(DefaultCacheFilename); - if (av_open_input_file(&FormatContext, Args[0].AsString(), NULL, 0, NULL) != 0) - Env->ThrowError("FFmpegSource: Couldn't open \"%s\"", Args[0].AsString()); - - bool IsMatroska = !strcmp(FormatContext->iformat->name, "matroska"); - - av_close_input_file(FormatContext); + if (SeekMode < 0 || SeekMode > 3) + Env->ThrowError("FFmpegSource: Invalid seek mode selected"); FILE *TCFile = NULL; - const char *Timecodes = Args[3].AsString(""); if (strcmp(Timecodes, "")) { TCFile = fopen(Timecodes, "w"); if (!TCFile) @@ -696,21 +576,40 @@ AVSValue __cdecl CreateFFmpegSource(AVSValue Args, void* UserData, IScriptEnviro fprintf(TCFile, "# timecode format v2\n"); } + FILE *CacheFile = NULL; + if (Cache) { + CacheFile = fopen(CacheFilename, "a+"); + if (!CacheFile) + Env->ThrowError("FFmpegSource: Failed to open cache file"); + fseek(CacheFile, 0, SEEK_END); + } + + av_register_all(); + AVFormatContext *FormatContext; + + if (av_open_input_file(&FormatContext, Source, NULL, 0, NULL) != 0) + Env->ThrowError("FFmpegSource: Couldn't open \"%s\"", Args[0].AsString()); + bool IsMatroska = !strcmp(FormatContext->iformat->name, "matroska"); + av_close_input_file(FormatContext); + FFBase *Ret; if (IsMatroska) - Ret = new FFMKVSource(Args[0].AsString(), Args[1].AsInt(-1), TCFile, Env); + Ret = new FFMKVSource(Source, Track, TCFile, Cache, CacheFile, Env); else - Ret = new FFmpegSource(Args[0].AsString(), Args[1].AsInt(-1), Args[2].AsBool(false), TCFile, Env); + Ret = new FFmpegSource(Source, Track, SeekMode, TCFile, Cache, CacheFile, Env); if (TCFile) fclose(TCFile); + if (CacheFile) + fclose(CacheFile); + return Ret; } extern "C" __declspec(dllexport) const char* __stdcall AvisynthPluginInit2(IScriptEnvironment* Env) { - Env->AddFunction("FFmpegSource", "[source]s[track]i[forceseek]b[timecodes]s", CreateFFmpegSource, 0); + Env->AddFunction("FFmpegSource", "[source]s[track]i[seekmode]i[timecodes]s[cache]b[cachefile]s", CreateFFmpegSource, 0); return "FFmpegSource"; }; diff --git a/FFmpegSource/ffmpegsource.html b/FFmpegSource/ffmpegsource.html new file mode 100644 index 000000000..b9c04d659 --- /dev/null +++ b/FFmpegSource/ffmpegsource.html @@ -0,0 +1,92 @@ + + + +FFmpegSource Documentation + + + +

FFmpegSource Documentation

+ +

Changes

+
    + +
  • 1.2
      +
    • Compiled against ffmpeg rev9451
    • +
    • Somewhat cleaner source code
    • +
    • Linear access in addition to a few other modes of seeking can now be forced
    • +
    • Can now save the index information to a file which makes subsequent file opening fast
    • +
    • No longer skips indexing for any format
    • +
  • + +
  • 1.1
      +
    • Skip indexing for avi
    • +
    • Prefix all error messages with the plugin name
    • +
    • Can write v2 timecodes to a file
    • +
    • Fixed reported framerate
    • +
  • + +
+ +

Usage

+

+FFmpegSource(string source, int track = -1, int seekmode = 1, string timecodes, bool cache = true, string CacheFile) +

+ +

+source: + source file +

+ +

+track: + track number as seen by the relevant demuxer, starts from 0, -1 means will pick the first video track +

+ +

+seekmode: + force how seeking is handled, has no effect on matroska files which always use the equivalent of seekmode=1
+ 0: linear access, the definition of slow but should make some formats "usable"
+ 1: safe normal, bases seeking decisions on the reported keyframe positions
+ 2: unsafe normal, same as 1 but no error will be thrown if the exact destination has to be guessed
+ 3: aggressive, seek in the forward direction even if no closer keyframe is known to exist, only useful for containers where avformat doesn't report keyframes properly and testing +

+ +

+timecodes: + file to output timecodes to, if the file exists it will always be overwritten +

+ +

+cache: + write indexing information to a file for later use +

+ +

+cachefile: + if specified the file to store the index information in, if nothing is specified .ffcache is used +

+ +

Compatibility

+
    +
  • AVI, MKV, MP4, FLV: Frame accurate
  • +
  • OGM: Messed up first frame and seeking produces smearing with seekmode=3, incredibly slow seeking without
  • +
  • WMV: No seeking
  • +
  • VOB: No rff flags applied, frame accurate?
  • +
  • MPG: Seeking seems to be off by one or two frames now and then
  • +
  • TS: Anything except seekmode=0 is a complete waste of time
  • +
+ +

Compiling

+ +

zlib from http://www.zlib.net/

+ +

FFmpeg svn from http://ffmpeg.mplayerhq.hu/

+ +

Required Configuration: +./configure --enable-shared --disable-static --enable-memalign-hack --enable-swscaler --enable-gpl

+ +

Suggested Additional Options: +--disable-encoders --disable-muxers

+ + + \ No newline at end of file diff --git a/FFmpegSource/ffmpegsource.txt b/FFmpegSource/ffmpegsource.txt deleted file mode 100644 index 93125b2b2..000000000 --- a/FFmpegSource/ffmpegsource.txt +++ /dev/null @@ -1,32 +0,0 @@ -Changes -1.1 - Skip indexing for avi - Prefix all error messages with the plugin name - Can write v2 timecodes to a file - Fixed reported framerate - -Usage -FFmpegSource(string source, int track = -1, bool forceseek = false, string timecodes = "") -source: source file -track: video track nubmer as seen by the relevant demuxer, must be a video track - negative values means the first found video track -forceseek: seek even if the format has no registered index, only useful for containers with limited avformat support -timecodes: file to output timecodes to, implies indexing the file no matter what type - -Compatibility -AVI, MKV, MP4: Frame accurate -OGM: Messed up first frame and seeking produces smearing with forceseek=true, incredibly slow seeking without -WMV: No seeking -VOB: No rff flags, otherwise it appears to work -TS: Seeking goes way off, number of total frames is probably off too - -Compiling -zlib compiled DLL from http://www.zlib.net/ - -ffmpeg svn from http://ffmpeg.mplayerhq.hu/ - -required configuration -./configure --enable-shared --disable-static --enable-memalign-hack --enable-swscaler --enable-gpl - -suggested additions ---disable-encoders --disable-muxers \ No newline at end of file diff --git a/FFmpegSource/matroskacodecs.c b/FFmpegSource/matroskacodecs.c new file mode 100644 index 000000000..818cadf5c --- /dev/null +++ b/FFmpegSource/matroskacodecs.c @@ -0,0 +1,206 @@ + CodecID MatroskaToFFCodecID(TrackInfo *TI) { + char *Codec = TI->CodecID; + // fourcc list from ffdshow + if (!strcmp(Codec, "V_MS/VFW/FOURCC")) { + switch (((BITMAPINFOHEADER *)TI->CodecPrivate)->biCompression) { + case MAKEFOURCC('F', 'F', 'D', 'S'): + case MAKEFOURCC('F', 'V', 'F', 'W'): + case MAKEFOURCC('X', 'V', 'I', 'D'): + case MAKEFOURCC('D', 'I', 'V', 'X'): + case MAKEFOURCC('D', 'X', '5', '0'): + case MAKEFOURCC('M', 'P', '4', 'V'): + case MAKEFOURCC('3', 'I', 'V', 'X'): + case MAKEFOURCC('W', 'V', '1', 'F'): + case MAKEFOURCC('F', 'M', 'P', '4'): + case MAKEFOURCC('S', 'M', 'P', '4'): + return CODEC_ID_MPEG4; + case MAKEFOURCC('D', 'I', 'V', '3'): + case MAKEFOURCC('D', 'V', 'X', '3'): + case MAKEFOURCC('M', 'P', '4', '3'): + return CODEC_ID_MSMPEG4V3; + case MAKEFOURCC('M', 'P', '4', '2'): + return CODEC_ID_MSMPEG4V2; + case MAKEFOURCC('M', 'P', '4', '1'): + return CODEC_ID_MSMPEG4V1; + case MAKEFOURCC('W', 'M', 'V', '1'): + return CODEC_ID_WMV1; + case MAKEFOURCC('W', 'M', 'V', '2'): + return CODEC_ID_WMV2; + case MAKEFOURCC('W', 'M', 'V', '3'): + return CODEC_ID_WMV3; +/* + case MAKEFOURCC('M', 'S', 'S', '1'): + case MAKEFOURCC('M', 'S', 'S', '2'): + case MAKEFOURCC('W', 'V', 'P', '2'): + case MAKEFOURCC('W', 'M', 'V', 'P'): + return CODEC_ID_WMV9_LIB; +*/ + case MAKEFOURCC('W', 'V', 'C', '1'): + return CODEC_ID_VC1; + case MAKEFOURCC('V', 'P', '5', '0'): + return CODEC_ID_VP5; + case MAKEFOURCC('V', 'P', '6', '0'): + case MAKEFOURCC('V', 'P', '6', '1'): + case MAKEFOURCC('V', 'P', '6', '2'): + return CODEC_ID_VP6; + case MAKEFOURCC('V', 'P', '6', 'F'): + case MAKEFOURCC('F', 'L', 'V', '4'): + return CODEC_ID_VP6F; + case MAKEFOURCC('C', 'A', 'V', 'S'): + return CODEC_ID_CAVS; + case MAKEFOURCC('M', 'P', 'G', '1'): + case MAKEFOURCC('M', 'P', 'E', 'G'): + return CODEC_ID_MPEG2VIDEO; // not a typo + case MAKEFOURCC('M', 'P', 'G', '2'): + case MAKEFOURCC('E', 'M', '2', 'V'): + case MAKEFOURCC('M', 'M', 'E', 'S'): + return CODEC_ID_MPEG2VIDEO; + case MAKEFOURCC('H', '2', '6', '3'): + case MAKEFOURCC('S', '2', '6', '3'): + case MAKEFOURCC('L', '2', '6', '3'): + case MAKEFOURCC('M', '2', '6', '3'): + case MAKEFOURCC('U', '2', '6', '3'): + case MAKEFOURCC('X', '2', '6', '3'): + return CODEC_ID_H263; + case MAKEFOURCC('H', '2', '6', '4'): + case MAKEFOURCC('X', '2', '6', '4'): + case MAKEFOURCC('V', 'S', 'S', 'H'): + case MAKEFOURCC('D', 'A', 'V', 'C'): + case MAKEFOURCC('P', 'A', 'V', 'C'): + case MAKEFOURCC('A', 'V', 'C', '1'): + return CODEC_ID_H264; + case MAKEFOURCC('M', 'J', 'P', 'G'): + case MAKEFOURCC('L', 'J', 'P', 'G'): + case MAKEFOURCC('M', 'J', 'L', 'S'): + case MAKEFOURCC('J', 'P', 'E', 'G'): // questionable fourcc? + case MAKEFOURCC('A', 'V', 'R', 'N'): + case MAKEFOURCC('M', 'J', 'P', 'A'): + return CODEC_ID_MJPEG; + case MAKEFOURCC('D', 'V', 'S', 'D'): + case MAKEFOURCC('D', 'V', '2', '5'): + case MAKEFOURCC('D', 'V', '5', '0'): + case MAKEFOURCC('C', 'D', 'V', 'C'): + case MAKEFOURCC('C', 'D', 'V', '5'): + case MAKEFOURCC('D', 'V', 'I', 'S'): + case MAKEFOURCC('P', 'D', 'V', 'C'): + return CODEC_ID_DVVIDEO; + case MAKEFOURCC('H', 'F', 'Y', 'U'): + case MAKEFOURCC('F', 'F', 'V', 'H'): + return CODEC_ID_HUFFYUV; + case MAKEFOURCC('C', 'Y', 'U', 'V'): + return CODEC_ID_CYUV; + case MAKEFOURCC('A', 'S', 'V', '1'): + return CODEC_ID_ASV1; + case MAKEFOURCC('A', 'S', 'V', '2'): + return CODEC_ID_ASV2; + case MAKEFOURCC('V', 'C', 'R', '1'): + return CODEC_ID_VCR1; + case MAKEFOURCC('T', 'H', 'E', 'O'): + return CODEC_ID_THEORA; + case MAKEFOURCC('S', 'V', 'Q', '1'): + return CODEC_ID_SVQ1; + case MAKEFOURCC('S', 'V', 'Q', '3'): + return CODEC_ID_SVQ3; + case MAKEFOURCC('R', 'P', 'Z', 'A'): + return CODEC_ID_RPZA; + case MAKEFOURCC('F', 'F', 'V', '1'): + return CODEC_ID_FFV1; + case MAKEFOURCC('V', 'P', '3', '1'): + return CODEC_ID_VP3; + case MAKEFOURCC('R', 'L', 'E', '8'): + return CODEC_ID_MSRLE; + case MAKEFOURCC('M', 'S', 'Z', 'H'): + return CODEC_ID_MSZH; + case MAKEFOURCC('Z', 'L', 'I', 'B'): + return CODEC_ID_FLV1; + case MAKEFOURCC('F', 'L', 'V', '1'): + return CODEC_ID_ZLIB; +/* + case MAKEFOURCC('P', 'N', 'G', '1'): + return CODEC_ID_COREPNG; +*/ + case MAKEFOURCC('M', 'P', 'N', 'G'): + return CODEC_ID_PNG; +/* + case MAKEFOURCC('A', 'V', 'I', 'S'): + return CODEC_ID_AVISYNTH; +*/ + case MAKEFOURCC('C', 'R', 'A', 'M'): + return CODEC_ID_MSVIDEO1; + case MAKEFOURCC('R', 'T', '2', '1'): + return CODEC_ID_INDEO2; + case MAKEFOURCC('I', 'V', '3', '2'): + case MAKEFOURCC('I', 'V', '3', '1'): + return CODEC_ID_INDEO3; + case MAKEFOURCC('C', 'V', 'I', 'D'): + return CODEC_ID_CINEPAK; + case MAKEFOURCC('R', 'V', '1', '0'): + return CODEC_ID_RV10; + case MAKEFOURCC('R', 'V', '2', '0'): + return CODEC_ID_RV20; + case MAKEFOURCC('8', 'B', 'P', 'S'): + return CODEC_ID_8BPS; + case MAKEFOURCC('Q', 'R', 'L', 'E'): + return CODEC_ID_QTRLE; + case MAKEFOURCC('D', 'U', 'C', 'K'): + return CODEC_ID_TRUEMOTION1; + case MAKEFOURCC('T', 'M', '2', '0'): + return CODEC_ID_TRUEMOTION2; + case MAKEFOURCC('T', 'S', 'C', 'C'): + return CODEC_ID_TSCC; + case MAKEFOURCC('S', 'N', 'O', 'W'): + return CODEC_ID_SNOW; + case MAKEFOURCC('Q', 'P', 'E', 'G'): + case MAKEFOURCC('Q', '1', '_', '0'): + case MAKEFOURCC('Q', '1', '_', '1'): + return CODEC_ID_QPEG; + case MAKEFOURCC('H', '2', '6', '1'): + case MAKEFOURCC('M', '2', '6', '1'): + return CODEC_ID_H261; + case MAKEFOURCC('L', 'O', 'C', 'O'): + return CODEC_ID_LOCO; + case MAKEFOURCC('W', 'N', 'V', '1'): + return CODEC_ID_WNV1; + case MAKEFOURCC('C', 'S', 'C', 'D'): + return CODEC_ID_CSCD; + case MAKEFOURCC('Z', 'M', 'B', 'V'): + return CODEC_ID_ZMBV; + case MAKEFOURCC('U', 'L', 'T', 'I'): + return CODEC_ID_ULTI; + case MAKEFOURCC('V', 'I', 'X', 'L'): + return CODEC_ID_VIXL; + case MAKEFOURCC('A', 'A', 'S', 'C'): + return CODEC_ID_AASC; + case MAKEFOURCC('F', 'P', 'S', '1'): + return CODEC_ID_FRAPS; + default: + return CODEC_ID_NONE; + } + } else if (!strcmp(Codec, "V_MPEG4/ISO/AVC")) + return CODEC_ID_H264; + else if (!strcmp(Codec, "V_MPEG4/ISO/ASP")) + return CODEC_ID_MPEG4; + else if (!strcmp(Codec, "V_MPEG2")) + return CODEC_ID_MPEG2VIDEO; + else if (!strcmp(Codec, "V_MPEG1")) + return CODEC_ID_MPEG2VIDEO; // still not a typo + else if (!strcmp(Codec, "V_SNOW")) + return CODEC_ID_SNOW; + else if (!strcmp(Codec, "V_THEORA")) + return CODEC_ID_THEORA; + else if (!strncmp(Codec, "V_REAL/RV", 9)) { + switch (Codec[9]) { + case '1': + return CODEC_ID_RV10; + case '2': + return CODEC_ID_RV20; + case '3': + return CODEC_ID_RV30; + case '4': + return CODEC_ID_RV40; + default: + return CODEC_ID_NONE; + } + } else + return CODEC_ID_NONE; + }