Hello. I am working on a piece of software to play movies in opengl. I
need to be as nice to the CPU as possible.
I managed to display a movie by converting each frame from
PIX_FMT_YUV420P to PIX_FMT_RGB24 using sw_scale. It shows the video
correct but it is slow.
Is there anyway I can bind the data in an AVFrame to an opengl texture
without having to convert it with swscale.
My problem is not the colourspace stuff I have to do with shaders
programs or color matrices later, but rather as soon as I try to bind
the data in my AVFrame with GL_RGB format I get a segfault.
If I do:
glTexImage2D(GL_TEXTURE_2D, 0, 3,
movie->codec_ctx->width, movie->codec_ctx->height, 0,
GL_LUMINANCE, GL_UNSIGNED_BYTE, //GL_RGB, GL_UNSIGNED_BYTE <- segfaults
movie->frame->data[0]);
I get a black and white video with horizontal stripes. I can vaguely
make out parts of the video but it's greatly disorted.
I pasted all my code here:
http://pastebin.com/m162f9bab
Anyone have any experience in this?
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