Only the studio profile uses chroma_inter/intra matrices; the ordinary profile has only inter/intra matrices. And our code (namely the MPEG-2 unquantize functions) only use these two matrices (the MPEG-2 decoder unquantizes on its own while parsing).
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| @@ -2787,14 +2787,12 @@ static int decode_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb) · 2786 unmodified lines | ||
| 2787 | 2787 | last = v; |
| 2788 | 2788 | j = s->idsp.idct_permutation[ff_zigzag_direct[i]]; |
| 2789 | 2789 | s->intra_matrix[j] = last; |
| 2790 | − s->chroma_intra_matrix[j] = last; | |
| 2791 | 2790 | } |
| 2792 | 2791 | |
| 2793 | 2792 | /* replicate last value */ |
| 2794 | 2793 | for (; i < 64; i++) { |
| 2795 | 2794 | int j = s->idsp.idct_permutation[ff_zigzag_direct[i]]; |
| 2796 | 2795 | s->intra_matrix[j] = last; |
| 2797 | − s->chroma_intra_matrix[j] = last; | |
| 2798 | 2796 | } |
| 2799 | 2797 | } |
| 2800 | 2798 | |
| @@ -2814,14 +2812,12 @@ static int decode_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb) · 13 unmodified lines | ||
| 2814 | 2812 | last = v; |
| 2815 | 2813 | j = s->idsp.idct_permutation[ff_zigzag_direct[i]]; |
| 2816 | 2814 | s->inter_matrix[j] = v; |
| 2817 | − s->chroma_inter_matrix[j] = v; | |
| 2818 | 2815 | } |
| 2819 | 2816 | |
| 2820 | 2817 | /* replicate last value */ |
| 2821 | 2818 | for (; i < 64; i++) { |
| 2822 | 2819 | int j = s->idsp.idct_permutation[ff_zigzag_direct[i]]; |
| 2823 | 2820 | s->inter_matrix[j] = last; |
| 2824 | − s->chroma_inter_matrix[j] = last; | |
| 2825 | 2821 | } |
| 2826 | 2822 | } |
| 2827 | 2823 | |