shithub: libvpx

Info  •  Files  •  Log  •  Branches

Change tx_size_search_method setting for non-rd speed 5.

Use the same settting as in speed >=6.
This will use same logic for tx_size selecton as in speed >=6,
which limits the transform size and reduces ringing artifact.
Also metrics go up on average with this change: ~2% for PSNR, ~10% for SSIM.

Change-Id: Ia2d50db236ae1cc72f742bfa6c9ec5ea50ff0e0a

--- a/vp9/encoder/vp9_speed_features.c

+++ b/vp9/encoder/vp9_speed_features.c

@@ -337,6 +337,7 @@

     sf->coeff_prob_appx_step = 4;

     sf->use_fast_coef_updates = is_keyframe ? TWO_LOOP : ONE_LOOP_REDUCED;

     sf->mode_search_skip_flags = FLAG_SKIP_INTRA_DIRMISMATCH;

+    sf->tx_size_search_method = is_keyframe ? USE_LARGESTALL : USE_TX_8X8;

     if (!is_keyframe) {

       int i;

@@ -360,7 +361,6 @@

     // Turn on this to use non-RD key frame coding mode.

     sf->use_nonrd_pick_mode = 1;

     sf->mv.search_method = NSTEP;

-    sf->tx_size_search_method = is_keyframe ? USE_LARGESTALL : USE_TX_8X8;

     sf->mv.reduce_first_step_size = 1;

     sf->skip_encode_sb = 0;

   }