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FFmpegSource2: set output cs and resolution 

Originally committed to SVN as r2332.
This commit is contained in:
Fredrik Mellbin 2008-09-09 20:49:59 +00:00
parent 54dd632542
commit 3338b6471b
4 changed files with 96 additions and 13 deletions
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8
FFmpegSource2/ffms.cpp
View File

@ -53,6 +53,14 @@ FFMS_API(const AVFrameLite *) FFMS_GetFrame(VideoBase *VB, int n, char *ErrorMsg
return (AVFrameLite *)VB->GetFrame(n, ErrorMsg, MsgSize);
}
FFMS_API(int) FFMS_SetOutputFormat(VideoBase *VB, int TargetFormats, int Width, int Height) {
return VB->SetOutputFormat(TargetFormats, Width, Height);
}
FFMS_API(void) FFMS_ResetOutputFormat(VideoBase *VB) {
VB->ResetOutputFormat();
}
FFMS_API(void) FFMS_DestroyFrameIndex(FrameIndex *FI) {
delete FI;
}

2
FFmpegSource2/ffms.h
View File

@ -138,6 +138,8 @@ FFMS_API(void) FFMS_DestroyVideoSource(VideoBase *VB);
FFMS_API(int) FFMS_GetVSTrack(VideoBase *VB);
FFMS_API(const VideoProperties *) FFMS_GetVideoProperties(VideoBase *VB);
FFMS_API(const AVFrameLite *) FFMS_GetFrame(VideoBase *VB, int n, char *ErrorMsg, unsigned MsgSize);
FFMS_API(int) FFMS_SetOutputFormat(VideoBase *VB, int TargetFormats, int Width, int Height);
FFMS_API(void) FFMS_ResetOutputFormat(VideoBase *VB);
FFMS_API(void) FFMS_DestroyFrameIndex(FrameIndex *FI);
FFMS_API(int) FFMS_GetNumTracks(FrameIndex *TrackIndices, char *ErrorMsg, unsigned MsgSize);
FFMS_API(int) FFMS_GetNumFrames(FrameInfoVector *FIV, char *ErrorMsg, unsigned MsgSize);

91
FFmpegSource2/ffvideosource.cpp
View File

@ -50,10 +50,14 @@ int VideoBase::InitPP(const char *PP, int PixelFormat, char *ErrorMsg, unsigned
}
if (avpicture_alloc((AVPicture *)PPFrame, PixelFormat, VP.Width, VP.Height) < 0) {
av_free(PPFrame);
PPFrame = NULL;
_snprintf(ErrorMsg, MsgSize, "Failed to allocate picture");
return 4;
}
FinalFrame = PPFrame;
return 0;
}
@ -62,35 +66,45 @@ AVFrameLite *VideoBase::OutputFrame(AVFrame *Frame) {
pp_postprocess(const_cast<const uint8_t **>(Frame->data), Frame->linesize, PPFrame->data, PPFrame->linesize, VP.Width, VP.Height, Frame->qscale_table, Frame->qstride, PPMode, PPContext, Frame->pict_type | (Frame->qscale_type ? PP_PICT_TYPE_QP2 : 0));
PPFrame->key_frame = Frame->key_frame;
PPFrame->pict_type = Frame->pict_type;
return reinterpret_cast<AVFrameLite *>(PPFrame);
} else {
return reinterpret_cast<AVFrameLite *>(Frame);
}
if (SWS) {
sws_scale(SWS, PPFrame->data, PPFrame->linesize, 0, VP.Height, FinalFrame->data, FinalFrame->linesize);
FinalFrame->key_frame = PPFrame->key_frame;
FinalFrame->pict_type = PPFrame->pict_type;
}
return reinterpret_cast<AVFrameLite *>(FinalFrame);
}
VideoBase::VideoBase() {
memset(&VP, 0, sizeof(VP));
PPContext = NULL;
PPMode = NULL;
SWS = NULL;
LastFrameNum = -1;
CurrentFrame = 0;
CodecContext = NULL;
DecodeFrame = avcodec_alloc_frame();
PPFrame = DecodeFrame;
FinalFrame = PPFrame;
}
VideoBase::~VideoBase() {
if (PPMode)
pp_free_mode(PPMode);
if (PPContext)
pp_free_context(PPContext);
if (SWS)
sws_freeContext(SWS);
if (FinalFrame != PPFrame) {
avpicture_free((AVPicture *)FinalFrame);
av_free(FinalFrame);
}
if (PPFrame != DecodeFrame) {
avpicture_free((AVPicture *)PPFrame);
av_free(PPFrame);
}
av_free(DecodeFrame);
}
@ -101,6 +115,55 @@ AVFrame *GetFrameByTime(double Time, char *ErrorMsg, unsigned MsgSize) {
return NULL;
}
int VideoBase::SetOutputFormat(int TargetFormats, int Width, int Height) {
int Loss;
int OutputFormat = 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), CodecContext->pix_fmt, 1 /* Required to prevent pointless RGB32 => RGB24 conversion */, &Loss);
if (OutputFormat == -1)
return -1;
SwsContext *NewSWS = NULL;
if (CodecContext->pix_fmt != OutputFormat || Width != CodecContext->width || Height != CodecContext->height) {
NewSWS = sws_getContext(CodecContext->width, CodecContext->height, CodecContext->pix_fmt, Width, Height,
OutputFormat, GetCPUFlags() | SWS_BICUBIC, NULL, NULL, NULL);
if (NewSWS == NULL)
return 1;
}
if (SWS)
sws_freeContext(SWS);
SWS = NewSWS;
VP.Height = Height;
VP.Width = Width;
VP.PixelFormat = OutputFormat;
// FIXME: In theory the allocations in this part could fail just like in InitPP but whatever
if (FinalFrame != PPFrame) {
avpicture_free((AVPicture *)FinalFrame);
av_free(FinalFrame);
}
if (SWS) {
FinalFrame = avcodec_alloc_frame();
avpicture_alloc((AVPicture *)FinalFrame, VP.PixelFormat, VP.Width, VP.Height);
} else {
FinalFrame = PPFrame;
}
return 0;
}
void VideoBase::ResetOutputFormat() {
if (SWS)
sws_freeContext(SWS);
SWS = NULL;
VP.Height = CodecContext->height;
VP.Width = CodecContext->width;
VP.PixelFormat = CodecContext->pix_fmt;
}
int FFVideoSource::GetTrackIndex(int &Index, char *ErrorMsg, unsigned MsgSize) {
if (Index < 0) {
Index = -1;
@ -133,7 +196,7 @@ void FFVideoSource::Free(bool CloseCodec) {
if (CloseCodec)
avcodec_close(CodecContext);
av_close_input_file(FormatContext);
// FIXME
// how was it allocated? how was it deallocate? nobody knows
//av_free(FormatContext);
}
@ -218,7 +281,10 @@ FFVideoSource::FFVideoSource(const char *SourceFile, int Track, FrameIndex *Trac
VP.FPSNumerator = 30;
}
InitPP(PP, CodecContext->pix_fmt, ErrorMsg, MsgSize);
if (InitPP(PP, CodecContext->pix_fmt, ErrorMsg, MsgSize)) {
Free(true);
throw ErrorMsg;
}
// Adjust framerate to match the duration of the first frame
if (Frames.size() >= 2) {
@ -275,7 +341,7 @@ Done:
AVFrameLite *FFVideoSource::GetFrame(int n, char *ErrorMsg, unsigned MsgSize) {
// PPFrame always holds frame LastFrameNum even if no PP is applied
if (LastFrameNum == n)
return reinterpret_cast<AVFrameLite *>(PPFrame);
return OutputFrame(DecodeFrame);
bool HasSeeked = false;
@ -463,7 +529,10 @@ MatroskaVideoSource::MatroskaVideoSource(const char *SourceFile, int Track,
throw ErrorMsg;
}
InitPP(PP, CodecContext->pix_fmt, ErrorMsg, MsgSize);
if (InitPP(PP, CodecContext->pix_fmt, ErrorMsg, MsgSize)) {
Free(true);
throw ErrorMsg;
}
// Calculate the average framerate
if (Frames.size() >= 2) {
@ -526,7 +595,7 @@ Done:
AVFrameLite *MatroskaVideoSource::GetFrame(int n, char *ErrorMsg, unsigned MsgSize) {
// PPFrame always holds frame LastFrameNum even if no PP is applied
if (LastFrameNum == n)
return reinterpret_cast<AVFrameLite *>(PPFrame);
return OutputFrame(DecodeFrame);
bool HasSeeked = false;

8
FFmpegSource2/ffvideosource.h
View File

@ -37,10 +37,12 @@ class VideoBase {
private:
pp_context_t *PPContext;
pp_mode_t *PPMode;
SwsContext *SWS;
protected:
VideoProperties VP;
AVFrame *PPFrame;
AVFrame *DecodeFrame;
AVFrame *PPFrame;
AVFrame *FinalFrame;
int LastFrameNum;
FrameInfoVector Frames;
int VideoTrack;
@ -55,8 +57,10 @@ public:
const VideoProperties& __stdcall GetVideoProperties() { return VP; }
int GetTrack() { return VideoTrack; }
FrameInfoVector *GetFrameInfoVector() { return &Frames; }
virtual AVFrameLite *GetFrame(int n, char *ErrorMsg, unsigned MsgSize) = 0;;
virtual AVFrameLite *GetFrame(int n, char *ErrorMsg, unsigned MsgSize) = 0;
AVFrameLite *GetFrameByTime(double Time, char *ErrorMsg, unsigned MsgSize);
int SetOutputFormat(int TargetFormats, int Width, int Height);
void ResetOutputFormat();
};
class FFVideoSource : public VideoBase {