From: Paul Wilkins <paulwilkins@google.com>
Date: Tue, 23 Jul 2013 11:49:55 +0000 (-0700)
Subject: Merge "Reworked the auto_mv_step_size speed feature"
X-Git-Tag: v1.3.0~772
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=7c134bc0cdad93bf2b6037ca56e91a6af74eadba;p=libvpx

Merge "Reworked the auto_mv_step_size speed feature"
---

7c134bc0cdad93bf2b6037ca56e91a6af74eadba
diff --cc vp9/encoder/vp9_onyx_if.c
index fe276fa6b,548f70baa..8d846e0fb
--- a/vp9/encoder/vp9_onyx_if.c
+++ b/vp9/encoder/vp9_onyx_if.c
@@@ -2585,8 -2557,26 +2583,26 @@@ static void encode_frame_to_data_rate(V
    }
  
    // Set default state for segment based loop filter update flags
 -  xd->mode_ref_lf_delta_update = 0;
 +  xd->lf.mode_ref_delta_update = 0;
  
+   // Initialize cpi->mv_step_param to default based on max resolution
+   cpi->mv_step_param = vp9_init_search_range(cpi, max_mv_def);
+   // Initialize cpi->max_mv_magnitude and cpi->mv_step_param if appropriate.
+   if (sf->auto_mv_step_size) {
+     if ((cpi->common.frame_type == KEY_FRAME) || cpi->common.intra_only) {
+       // initialize max_mv_magnitude for use in the first INTER frame
+       // after a key/intra-only frame
+       cpi->max_mv_magnitude = max_mv_def;
+     } else {
+       if (cm->show_frame)
+         // allow mv_steps to correspond to twice the max mv magnitude found
+         // in the previous frame, capped by the default max_mv_magnitude based
+         // on resolution
+         cpi->mv_step_param = vp9_init_search_range(
+             cpi, MIN(max_mv_def, 2 * cpi->max_mv_magnitude));
+       cpi->max_mv_magnitude = 0;
+     }
+   }
  
    // Set various flags etc to special state if it is a key frame
    if (cm->frame_type == KEY_FRAME) {