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Add a shader-based Apple ProRes decoder. It supports all codec features for profiles up to the 4444 XQ profile, ie.: - 4:2:2 and 4:4:4 chroma subsampling - 10- and 12-bit component depth - Interlacing - Alpha The implementation consists in two shaders: the VLD kernel does entropy decoding for color/alpha, and the IDCT kernel performs the inverse transform on color components. Benchmarks for a 4k yuv422p10 sample: - AMD Radeon 6700XT: 178 fps - Intel i7 Tiger Lake: 37 fps - NVidia Orin Nano: 70 fps