mirror of https://github.com/odrling/Aegisub
Applied p-static's patch to use swscale with ffmpeg video provider for major speed improvement.
Originally committed to SVN as r1796.
This commit is contained in:
Rodrigo Braz Monteiro
parent
8ce9d53757
commit
da09a52b59
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@ -45,6 +45,7 @@
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extern "C" {
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#include <ffmpeg/avcodec.h>
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#include <ffmpeg/avformat.h>
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#include <ffmpeg/swscale.h>
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}
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#include <wx/wxprec.h>
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#include <wx/image.h>
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@ -70,7 +71,11 @@ private:
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AVCodec *codec;
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AVFrame *frame;
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int vidStream;
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AVFrame *frameRGB;
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uint8_t *bufferRGB;
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SwsContext *sws_context;
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int display_w;
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int display_h;
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@ -130,6 +135,9 @@ LAVCVideoProvider::LAVCVideoProvider(wxString filename,double fps) {
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codec = NULL;
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stream = NULL;
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frame = NULL;
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frameRGB = NULL;
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bufferRGB = NULL;
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sws_context = NULL;
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buffer1 = NULL;
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buffer2 = NULL;
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buffer1Size = 0;
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@ -237,6 +245,17 @@ void LAVCVideoProvider::Close() {
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if (frame) av_free((void*)frame);
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frame = NULL;
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// Free SWS context and other stuff from RGB conversion
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if (sws_context)
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sws_freeContext(sws_context);
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sws_context = NULL;
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if(frameRGB)
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av_free(frameRGB);
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frameRGB = NULL;
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if(bufferRGB)
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delete(bufferRGB);
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bufferRGB = NULL;
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// Close codec context
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if (codec && codecContext) avcodec_close(codecContext);
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codecContext = NULL;
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@ -429,75 +448,54 @@ const AegiVideoFrame LAVCVideoProvider::DoGetFrame(int n) {
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}
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#endif
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}
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// Convert to RGB32
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AVFrame *useFrame = frame;
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AVFrame *frameRGB = NULL;
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//if (true) {
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// // Set properties
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// int w = codecContext->width;
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// int h = codecContext->height;
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// PixelFormat convFormat = PIX_FMT_RGB24;
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// unsigned int dstSize = avpicture_get_size(convFormat,w,h);
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// // Allocate RGB32 buffer
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// frameRGB = avcodec_alloc_frame();
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// uint8_t *buffer = new uint8_t[dstSize];
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// avpicture_fill((AVPicture*) frameRGB, buffer, convFormat, w, h);
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// // Convert to RGB32
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// img_convert((AVPicture*) frameRGB, convFormat, (AVPicture*) frame, codecContext->pix_fmt, w, h);
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// useFrame = frameRGB;
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//}
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// Get aegisub frame
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AegiVideoFrame &final = curFrame;
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if (frame) {
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int w = codecContext->width;
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int h = codecContext->height;
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PixelFormat srcFormat = codecContext->pix_fmt;
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PixelFormat dstFormat = PIX_FMT_RGB32;
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// Allocate RGB32 buffer
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if(!sws_context) //first frame
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{
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frameRGB = avcodec_alloc_frame();
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unsigned int dstSize = avpicture_get_size(dstFormat,w,h);
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bufferRGB = new uint8_t[dstSize];
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sws_context = sws_getContext(w, h, srcFormat, w, h, dstFormat, SWS_PRINT_INFO, NULL, NULL, NULL);
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}
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avpicture_fill((AVPicture*) frameRGB, bufferRGB, dstFormat, w, h);
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// Set AegiVideoFrame
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PixelFormat format = codecContext->pix_fmt;
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unsigned int size = avpicture_get_size(format,codecContext->width,codecContext->height);
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final.w = codecContext->width;
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final.h = codecContext->height;
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final.flipped = false;
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final.invertChannels = false;
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// Set format
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switch (format) {
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case PIX_FMT_BGR24: final.invertChannels = true;
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case PIX_FMT_RGB24: final.format = FORMAT_RGB24; break;
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#ifdef __WINDOWS__
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case PIX_FMT_BGR32: final.invertChannels = true;
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#endif
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case PIX_FMT_RGB32: final.format = FORMAT_RGB32; break;
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case PIX_FMT_YUYV422: final.format = FORMAT_YUY2; break;
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case PIX_FMT_YUV420P: final.format = FORMAT_YV12; break;
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default: throw _T("ffmpeg returned an unknown frame format.");
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}
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final.invertChannels = true;
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final.format = FORMAT_RGB32;
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// Allocate
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for (int i=0;i<4;i++) final.pitch[i] = useFrame->linesize[i];
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for (int i=0;i<4;i++) final.pitch[i] = frameRGB->linesize[i];
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final.Allocate();
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// Copy data
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if (final.format == FORMAT_YV12) {
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memcpy(final.data[0],useFrame->data[0],useFrame->linesize[0] * final.h);
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memcpy(final.data[1],useFrame->data[1],useFrame->linesize[1] * final.h / 2);
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memcpy(final.data[2],useFrame->data[2],useFrame->linesize[2] * final.h / 2);
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}
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else memcpy(final.data[0],useFrame->data[0],size);
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// Convert to RGB32, and write directly to the output frame
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sws_scale(sws_context, frame->data, frame->linesize, 0, h, final.data, frameRGB->linesize);
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}
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else // No frame available
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{
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final = AegiVideoFrame(GetWidth(),GetHeight());
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}
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// No frame available
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else final = AegiVideoFrame(GetWidth(),GetHeight());
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// Set current frame
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validFrame = true;
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//curFrame = final;
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frameNumber = n;
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if (frameRGB) av_free(frameRGB);
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// Return
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return curFrame;
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return final;
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}
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@ -66,6 +66,7 @@ AC_CHECK_FUNCS([Pa_GetStreamTime])
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PKG_CHECK_MODULES([LIBPULSE], libpulse >= 0.5, [found_audio=yes], [with_pulseaudio=no])
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AC_CHECK_LIB([avcodec], [avcodec_init],, [with_ffmpeg=no])
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AC_CHECK_LIB([avformat], [av_read_frame],, [with_ffmpeg=no])
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AC_CHECK_LIB([swscale], [sws_scale],, [with_ffmpeg=no])
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if test "$with_ffmpeg" != "no"; then
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found_video_provider=yes
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fi
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@ -257,3 +258,4 @@ fi
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