From d166be653e76d5ed4fc7a5c1e41abd22ebfd824f Mon Sep 17 00:00:00 2001 From: Marco Date: Wed, 22 Oct 2014 10:36:03 -0700 Subject: [PATCH] vp8: Update to computation of noise level. Avoid unneeded computation of mse in process_denoise. Change-Id: I3a538178f2d138750d0c38ea4dd05dbbc2b7df41 --- vp8/encoder/onyx_if.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/vp8/encoder/onyx_if.c b/vp8/encoder/onyx_if.c index d8eff66..010c01a 100644 --- a/vp8/encoder/onyx_if.c +++ b/vp8/encoder/onyx_if.c @@ -3334,11 +3334,6 @@ static void process_denoiser_mode_change(VP8_COMP *cpi) { int index = block_index_row + (j >> 4); if (cpi->consec_zero_last[index] >= min_consec_zero_last) { unsigned int sse; - const unsigned int mse = vp8_mse16x16(src + j, - ystride, - dst + j, - ystride, - &sse); const unsigned int var = vp8_variance16x16(src + j, ystride, dst + j, @@ -3347,14 +3342,15 @@ static void process_denoiser_mode_change(VP8_COMP *cpi) { // Only consider this block as valid for noise measurement // if the sum_diff average of the current and previous frame // is small (to avoid effects from lighting change). - if ((mse - var) < 256) { + if ((sse - var) < 256) { + unsigned int sse2; const unsigned int act = vp8_variance16x16(src + j, ystride, const_source, 0, - &sse); + &sse2); if (act > 0) - total += mse / act; + total += sse / act; num_blocks++; } } -- 2.7.4