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ce81237d63
This makes all ff_draw_* based filters aware of YUV colorspaces and ranges. Needed for YUVJ removal. Also fixes a bug where e.g. vf_pad would generate a limited range background even after conversion to full-scale grayscale. The FATE changes were a consequence of the aforementioned bugfix - the gray scale files are output as full range (due to conversion by libswscale, which hard-codes gray = full), and appropriately tagged as such, but before this change the padded version incorrectly used a limited range (16) black background for these formats.