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FFmpegSource 1.2 

Originally committed to SVN as r1335.
This commit is contained in:
Fredrik Mellbin 2007-07-02 21:36:21 +00:00
parent c01bb02942
commit 16786725c3
4 changed files with 530 additions and 365 deletions
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565
FFmpegSource/ffmpegsource.cpp
View File

@ -2,10 +2,7 @@
#include <stdio.h>
#include <map>
#include <vector>
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
@ -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<FrameInfo> 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<FFMKVFrameInfo> FrameToDTS;
std::map<ulonglong, int> 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<int64_t> FrameToDTS;
std::map<int64_t, int> 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";
};

92
FFmpegSource/ffmpegsource.html Normal file
View File

@ -0,0 +1,92 @@
<html>
<head>
<title>
FFmpegSource Documentation
</title>
</head>
<body>
<h1>FFmpegSource Documentation</h1>
<h2>Changes</h2>
<ul>
<li>1.2<ul>
<li>Compiled against ffmpeg rev9451</li>
<li>Somewhat cleaner source code</li>
<li>Linear access in addition to a few other modes of seeking can now be forced</li>
<li>Can now save the index information to a file which makes subsequent file opening fast</li>
<li>No longer skips indexing for any format</li>
</ul></li>
<li>1.1<ul>
<li>Skip indexing for avi</li>
<li>Prefix all error messages with the plugin name</li>
<li>Can write v2 timecodes to a file</li>
<li>Fixed reported framerate</li>
</ul></li>
</ul>
<h2>Usage</h2>
<p>
<b>FFmpegSource(string source, int track = -1, int seekmode = 1, string timecodes, bool cache = true, string CacheFile)</b>
</p>
<p>
<b>source:</b>
source file
</p>
<p>
<b>track:</b>
track number as seen by the relevant demuxer, starts from 0, -1 means will pick the first video track
</p>
<p>
<b>seekmode:</b>
force how seeking is handled, has no effect on matroska files which always use the equivalent of seekmode=1<br />
<b>0:</b> linear access, the definition of slow but should make some formats "usable"<br />
<b>1:</b> safe normal, bases seeking decisions on the reported keyframe positions<br />
<b>2:</b> unsafe normal, same as 1 but no error will be thrown if the exact destination has to be guessed<br />
<b>3:</b> 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
</p>
<p>
<b>timecodes:</b>
file to output timecodes to, if the file exists it will always be overwritten
</p>
<p>
<b>cache:</b>
write indexing information to a file for later use
</p>
<p>
<b>cachefile:</b>
if specified the file to store the index information in, if nothing is specified <source>.ffcache is used
</p>
<h2>Compatibility</h2>
<ul>
<li>AVI, MKV, MP4, FLV: Frame accurate</li>
<li>OGM: Messed up first frame and seeking produces smearing with seekmode=3, incredibly slow seeking without</li>
<li>WMV: No seeking</li>
<li>VOB: No rff flags applied, frame accurate?</li>
<li>MPG: Seeking seems to be off by one or two frames now and then</li>
<li>TS: Anything except seekmode=0 is a complete waste of time</li>
</ul>
<h2>Compiling</h2>
<p><b>zlib</b> from http://www.zlib.net/</p>
<p><b>FFmpeg svn</b> from http://ffmpeg.mplayerhq.hu/</p>
<p><b>Required Configuration:</b>
./configure --enable-shared --disable-static --enable-memalign-hack --enable-swscaler --enable-gpl</p>
<p><b>Suggested Additional Options:</b>
--disable-encoders --disable-muxers</p>
</body>
</html>

32
FFmpegSource/ffmpegsource.txt
View File

@ -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

206
FFmpegSource/matroskacodecs.c Normal file
View File

@ -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;
}