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@ -804,6 +804,32 @@ static av_always_inline PutBitContext* dv_encode_ac(EncBlockInfo* bi, |
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return pb; |
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} |
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//FIXME replace this by dsputil
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#define SC(x, y) ((s[x] - s[y]) ^ ((s[x] - s[y]) >> 7)) |
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static av_always_inline int dv_guess_dct_mode(DCTELEM *blk) { |
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DCTELEM *s; |
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int score88 = 0; |
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int score248 = 0; |
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int i; |
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/* Compute 8-8 score (small values give a better chance for 8-8 DCT) */ |
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s = blk; |
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for (i = 0; i < 7; i++) { |
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score88 += SC(0, 8) + SC(1, 9) + SC(2, 10) + SC(3, 11) + |
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SC(4, 12) + SC(5,13) + SC(6, 14) + SC(7, 15); |
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s += 8; |
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} |
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/* Compute 2-4-8 score (small values give a better chance for 2-4-8 DCT) */ |
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s = blk; |
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for (i = 0; i < 6; i++) { |
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score248 += SC(0, 16) + SC(1,17) + SC(2, 18) + SC(3, 19) + |
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SC(4, 20) + SC(5,21) + SC(6, 22) + SC(7, 23); |
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s += 8; |
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} |
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return (score88 - score248 > -10); |
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} |
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static av_always_inline void dv_set_class_number(DCTELEM* blk, EncBlockInfo* bi, |
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const uint8_t* zigzag_scan, |
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const int *weight, int bias) |
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@ -876,32 +902,6 @@ static av_always_inline void dv_set_class_number(DCTELEM* blk, EncBlockInfo* bi, |
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} |
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} |
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//FIXME replace this by dsputil
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#define SC(x, y) ((s[x] - s[y]) ^ ((s[x] - s[y]) >> 7)) |
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static av_always_inline int dv_guess_dct_mode(DCTELEM *blk) { |
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DCTELEM *s; |
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int score88 = 0; |
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int score248 = 0; |
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int i; |
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/* Compute 8-8 score (small values give a better chance for 8-8 DCT) */ |
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s = blk; |
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for (i = 0; i < 7; i++) { |
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score88 += SC(0, 8) + SC(1, 9) + SC(2, 10) + SC(3, 11) + |
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SC(4, 12) + SC(5,13) + SC(6, 14) + SC(7, 15); |
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s += 8; |
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} |
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/* Compute 2-4-8 score (small values give a better chance for 2-4-8 DCT) */ |
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s = blk; |
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for (i = 0; i < 6; i++) { |
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score248 += SC(0, 16) + SC(1,17) + SC(2, 18) + SC(3, 19) + |
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SC(4, 20) + SC(5,21) + SC(6, 22) + SC(7, 23); |
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s += 8; |
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} |
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return (score88 - score248 > -10); |
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} |
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static inline void dv_guess_qnos(EncBlockInfo* blks, int* qnos) |
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{ |
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int size[5]; |
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