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avcodec/proresenc_anatoliy: directly work with blocks in encode_dcs()

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This makes the function closer to encode_dcs() in proresenc_kostya.
This commit is contained in:
Clément Bœsch 2023-12-11 01:52:23 +01:00
parent dadc5ac24a
commit 273f591a3d
1 changed files with 5 additions and 4 deletions
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9
libavcodec/proresenc_anatoliy.c
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@ -271,16 +271,17 @@ static void encode_dcs(PutBitContext *pb, int16_t *blocks,
int blocks_per_slice, int *qmat) int blocks_per_slice, int *qmat)
{ {
int prev_dc, codebook; int prev_dc, codebook;
int i, sign, idx; int i, sign;
int new_dc, delta, diff_sign, code; int new_dc, delta, diff_sign, code;
prev_dc = (blocks[0] - 0x4000) / qmat[0]; prev_dc = (blocks[0] - 0x4000) / qmat[0];
codebook = TO_GOLOMB(prev_dc); codebook = TO_GOLOMB(prev_dc);
encode_vlc_codeword(pb, FIRST_DC_CB, codebook); encode_vlc_codeword(pb, FIRST_DC_CB, codebook);
blocks += 64;
codebook = 5; sign = 0; idx = 64; codebook = 5; sign = 0;
for (i = 1; i < blocks_per_slice; i++, idx += 64) { for (i = 1; i < blocks_per_slice; i++, blocks += 64) {
new_dc = (blocks[idx] - 0x4000) / qmat[0]; new_dc = (blocks[0] - 0x4000) / qmat[0];
delta = new_dc - prev_dc; delta = new_dc - prev_dc;
diff_sign = DIFF_SIGN(delta, sign); diff_sign = DIFF_SIGN(delta, sign);
code = TO_GOLOMB2(get_level(delta), diff_sign); code = TO_GOLOMB2(get_level(delta), diff_sign);