このリンクを参考にIplImageをSDL_Surfaceに変換しました
SDL_Surface *single_channel_ipl_to_surface (IplImage *opencvimg)
{
SDL_Surface *surface = SDL_CreateRGBSurfaceFrom((void*)opencvimg->imageData,
opencvimg->width,
opencvimg->height,
opencvimg->depth*opencvimg->nChannels,
opencvimg->widthStep,
1, 1, 1 ,0);
return surface;
}
SDL_SurfaceをIplImageに変換するにはどうすればよいですか