ffmpeg | branch: master | Clément Bœsch <u...@pkh.me> | Mon Dec 11 01:57:06 2023 +0100| [9258f4eaf9e8d8afbd98ae1e0c34a3bee8bec067] | committer: Clément Bœsch
avcodec/proresenc_anatoliy: compute sign only once This makes the function closer to encode_dcs() in proresenc_kostya. > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=9258f4eaf9e8d8afbd98ae1e0c34a3bee8bec067 --- libavcodec/proresenc_anatoliy.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/libavcodec/proresenc_anatoliy.c b/libavcodec/proresenc_anatoliy.c index fe7b3e9ef3..0d1b84face 100644 --- a/libavcodec/proresenc_anatoliy.c +++ b/libavcodec/proresenc_anatoliy.c @@ -257,7 +257,6 @@ static void encode_vlc_codeword(PutBitContext *pb, unsigned codebook, int val) #define GET_SIGN(x) ((x) >> 31) #define TO_GOLOMB(val) (((val) * 2) ^ GET_SIGN(val)) -#define DIFF_SIGN(val, sign) (GET_SIGN(val) ^ (sign)) #define IS_NEGATIVE(val) ((GET_SIGN(val) ^ -1) + 1) #define TO_GOLOMB2(val,sign) ((val)==0 ? 0 : ((val) << 1) + (sign)) @@ -272,7 +271,7 @@ static void encode_dcs(PutBitContext *pb, int16_t *blocks, int blocks_per_slice, int *qmat) { int prev_dc, codebook; - int i, sign; + int i, sign, new_sign; int new_dc, delta, diff_sign, code; prev_dc = (blocks[0] - 0x4000) / qmat[0]; @@ -284,13 +283,14 @@ static void encode_dcs(PutBitContext *pb, int16_t *blocks, for (i = 1; i < blocks_per_slice; i++, blocks += 64) { new_dc = (blocks[0] - 0x4000) / qmat[0]; delta = new_dc - prev_dc; - diff_sign = DIFF_SIGN(delta, sign); + new_sign = GET_SIGN(delta); + diff_sign = new_sign ^ sign; code = TO_GOLOMB2(get_level(delta), diff_sign); encode_vlc_codeword(pb, ff_prores_dc_codebook[codebook], code); codebook = FFMIN(code, 6); - sign = delta >> 31; + sign = new_sign; prev_dc = new_dc; } } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
