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cffmpegsdlsdl-2

SDL2.0 Alternative for SDL_Overlay

So I've been trying to go through the following tutorial on ffmpeg: http://dranger.com/ffmpeg/tutorial02.html

However, when I try to compile using gcc, I get the following output:

root:/Users/mbrodeur/Downloads/HACKATHON CONTENT/Tutorials-> gcc -o tutorial02 tutorial02.c -lavutil -lavformat -lavcodec -lz -lavutil -lm -lswscale -D_THREAD_SAFE -lSDL2
tutorial02.c: In function ‘main’:
tutorial02.c:41: error: ‘SDL_Overlay’ undeclared (first use in this function)
tutorial02.c:41: error: (Each undeclared identifier is reported only once
tutorial02.c:41: error: for each function it appears in.)
tutorial02.c:41: error: ‘bmp’ undeclared (first use in this function)
tutorial02.c:98: warning: assignment makes pointer from integer without a cast
tutorial02.c:110: error: ‘SDL_YV12_OVERLAY’ undeclared (first use in this function)

Now, I read that SDL_Overlay is no longer used in SDL2, so therein lies the problem. I've been poking around, but can't seem to find anything helpful. Is there a replacement for SDL_Overlay? Is it necessary?

SDL_Overlay is used in the following context:

SDL_Overlay     *bmp;
bmp = SDL_CreateYUVOverlay(pCodecCtx->width, pCodecCtx->height,
                       SDL_YV12_OVERLAY, screen);
Solution

  • Try SDL_CreateTexture() with a YUV pixel format that matches the layout and planar-ity of your decoded frames.

    Or use libswscale to convert ffmpeg's YUV buffers to RGB.

    EDIT: SDL2 >= 2.0.1 has SDL_UpdateYUVTexture() for updating planar YUV textures so you don't have to manually coalesce libav's buffers any more.