From e62b3dd210f19c337fc541758079fceeadabc208 Mon Sep 17 00:00:00 2001 From: Loren Merritt Date: Fri, 30 Mar 2007 19:16:41 +0000 Subject: [PATCH] move some stuff out of an inner loop. 12% faster svq1 encoding. Originally committed as revision 8560 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/svq1.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/libavcodec/svq1.c b/libavcodec/svq1.c index 9337dc1..5087ba8 100644 --- a/libavcodec/svq1.c +++ b/libavcodec/svq1.c @@ -992,17 +992,16 @@ static int encode_block(SVQ1Context *s, uint8_t *src, uint8_t *ref, uint8_t *dec for(i=0; i<16; i++){ int sum= codebook_sum[stage*16 + i]; - int sqr, diff, mean, score; + int sqr, diff, score; vector = codebook + stage*size*16 + i*size; sqr = s->dsp.ssd_int8_vs_int16(vector, block[stage], size); diff= block_sum[stage] - sum; - mean= (diff + (size>>1)) >> (level+3); - assert(mean >-300 && mean<300); - if(intra) mean= av_clip(mean, 0, 255); - else mean= av_clip(mean, -256, 255); score= sqr - ((diff*(int64_t)diff)>>(level+3)); //FIXME 64bit slooow if(score < best_vector_score){ + int mean= (diff + (size>>1)) >> (level+3); + assert(mean >-300 && mean<300); + mean= av_clip(mean, intra?0:-256, 255); best_vector_score= score; best_vector[stage]= i; best_vector_sum= sum; -- 2.7.4