radeon/uvd: fix MPEG2/4 ref frame index limit
Otherwise the first few frames have an incorrect reference index. Signed-off-by: Christian König <christian.koenig@amd.com>
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@ -493,8 +493,8 @@ uint8_t pquant
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/* extract the frame number from a referenced video buffer */
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static uint32_t get_ref_pic_idx(struct ruvd_decoder *dec, struct pipe_video_buffer *ref)
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{
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uint32_t min = dec->frame_number - NUM_MPEG2_REFS;
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uint32_t max = dec->frame_number - 1;
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uint32_t min = MAX2(dec->frame_number, NUM_MPEG2_REFS) - NUM_MPEG2_REFS;
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uint32_t max = MAX2(dec->frame_number, 1) - 1;
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uintptr_t frame;
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/* seems to be the most sane fallback */
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