From 811f80ca25728ed3a1e5be9a3e8dfae5c7cc52c1 Mon Sep 17 00:00:00 2001
From: "Ronald S. Bultje" <rbultje@google.com>
Date: Wed, 24 Apr 2013 11:28:57 -0700
Subject: [PATCH] Remove write-only variables that store refframe, signbias and
 mv.

These were superseeded by prev_mip.

Change-Id: Ide240475350ce003d68aa990eddc2ee30920663a
---
 vp9/encoder/vp9_onyx_if.c  | 38 --------------------------------------
 vp9/encoder/vp9_onyx_int.h |  5 -----
 2 files changed, 43 deletions(-)

diff --git a/vp9/encoder/vp9_onyx_if.c b/vp9/encoder/vp9_onyx_if.c
index 9d693a09a..706cf9ac9 100644
--- a/vp9/encoder/vp9_onyx_if.c
+++ b/vp9/encoder/vp9_onyx_if.c
@@ -304,16 +304,6 @@ static void setup_features(VP9_COMP *cpi) {
 
 
 static void dealloc_compressor_data(VP9_COMP *cpi) {
-  // Delete last frame MV storage buffers
-  vpx_free(cpi->lfmv);
-  cpi->lfmv = 0;
-
-  vpx_free(cpi->lf_ref_frame_sign_bias);
-  cpi->lf_ref_frame_sign_bias = 0;
-
-  vpx_free(cpi->lf_ref_frame);
-  cpi->lf_ref_frame = 0;
-
   // Delete sementation map
   vpx_free(cpi->segmentation_map);
   cpi->segmentation_map = 0;
@@ -1443,11 +1433,6 @@ VP9_PTR vp9_create_compressor(VP9_CONFIG *oxcf) {
   cpi->alt_is_last  = 0;
   cpi->gold_is_alt  = 0;
 
-  // allocate memory for storing last frame's MVs for MV prediction.
-  CHECK_MEM_ERROR(cpi->lfmv, vpx_calloc((cpi->common.mb_rows + 2) * (cpi->common.mb_cols + 2), sizeof(int_mv)));
-  CHECK_MEM_ERROR(cpi->lf_ref_frame_sign_bias, vpx_calloc((cpi->common.mb_rows + 2) * (cpi->common.mb_cols + 2), sizeof(int)));
-  CHECK_MEM_ERROR(cpi->lf_ref_frame, vpx_calloc((cpi->common.mb_rows + 2) * (cpi->common.mb_cols + 2), sizeof(int)));
-
   // Create the encoder segmentation map and set all entries to 0
   CHECK_MEM_ERROR(cpi->segmentation_map, vpx_calloc((cpi->common.mb_rows * cpi->common.mb_cols), 1));
 
@@ -3305,29 +3290,6 @@ static void encode_frame_to_data_rate(VP9_COMP *cpi,
                                        &cm->yv12_fb[cm->new_fb_idx]);
   }
 
-  // This frame's MVs are saved and will be used in next frame's MV
-  // prediction. Last frame has one more line(add to bottom) and one
-  // more column(add to right) than cm->mip. The edge elements are
-  // initialized to 0.
-  if (cm->show_frame) { // do not save for altref frame
-    int mb_row;
-    int mb_col;
-    MODE_INFO *tmp = cm->mip;
-
-    if (cm->frame_type != KEY_FRAME) {
-      for (mb_row = 0; mb_row < cm->mb_rows + 1; mb_row ++) {
-        for (mb_col = 0; mb_col < cm->mb_cols + 1; mb_col ++) {
-          if (tmp->mbmi.ref_frame != INTRA_FRAME)
-            cpi->lfmv[mb_col + mb_row * (cm->mode_info_stride + 1)].as_int = tmp->mbmi.mv[0].as_int;
-
-          cpi->lf_ref_frame_sign_bias[mb_col + mb_row * (cm->mode_info_stride + 1)] = cm->ref_frame_sign_bias[tmp->mbmi.ref_frame];
-          cpi->lf_ref_frame[mb_col + mb_row * (cm->mode_info_stride + 1)] = tmp->mbmi.ref_frame;
-          tmp++;
-        }
-      }
-    }
-  }
-
   if (cm->frame_type == KEY_FRAME)
     cpi->refresh_last_frame = 1;
 
diff --git a/vp9/encoder/vp9_onyx_int.h b/vp9/encoder/vp9_onyx_int.h
index a01c7d16e..aeaf1bda3 100644
--- a/vp9/encoder/vp9_onyx_int.h
+++ b/vp9/encoder/vp9_onyx_int.h
@@ -633,11 +633,6 @@ typedef struct VP9_COMP {
   int *mb_norm_activity_map;
   int output_partition;
 
-  // Store last frame's MV info for next frame MV prediction
-  int_mv *lfmv;
-  int *lf_ref_frame_sign_bias;
-  int *lf_ref_frame;
-
   /* force next frame to intra when kf_auto says so */
   int force_next_frame_intra;
 
-- 
2.40.0