From 92c536b465422bce94e8d47d08bf218e3f8e222c Mon Sep 17 00:00:00 2001
From: Dmitry Kovalev <dkovalev@google.com>
Date: Thu, 1 May 2014 11:35:50 -0700
Subject: [PATCH] Adding vp9_temporal_filter_init() function.

Change-Id: I0d50354111df79b74aafcd3bb7dc14df3c14733a
---
 vp9/encoder/vp9_encoder.c         |  6 +-----
 vp9/encoder/vp9_encoder.h         |  1 -
 vp9/encoder/vp9_temporal_filter.c | 16 +++++++++++++---
 vp9/encoder/vp9_temporal_filter.h |  1 +
 4 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/vp9/encoder/vp9_encoder.c b/vp9/encoder/vp9_encoder.c
index 395d26aef..f3ab4ede3 100644
--- a/vp9/encoder/vp9_encoder.c
+++ b/vp9/encoder/vp9_encoder.c
@@ -162,6 +162,7 @@ void vp9_initialize_enc() {
     vp9_rc_init_minq_luts();
     vp9_entropy_mv_init();
     vp9_entropy_mode_init();
+    vp9_temporal_filter_init();
     init_done = 1;
   }
 }
@@ -536,7 +537,6 @@ static void set_tile_limits(VP9_COMP *cpi) {
 
 static void init_config(struct VP9_COMP *cpi, VP9EncoderConfig *oxcf) {
   VP9_COMMON *const cm = &cpi->common;
-  int i;
 
   cpi->oxcf = *oxcf;
 
@@ -571,10 +571,6 @@ static void init_config(struct VP9_COMP *cpi, VP9EncoderConfig *oxcf) {
   cpi->alt_fb_idx = 2;
 
   set_tile_limits(cpi);
-
-  cpi->fixed_divide[0] = 0;
-  for (i = 1; i < 512; i++)
-    cpi->fixed_divide[i] = 0x80000 / i;
 }
 
 static int get_pass(MODE mode) {
diff --git a/vp9/encoder/vp9_encoder.h b/vp9/encoder/vp9_encoder.h
index edd45948d..6b9737076 100644
--- a/vp9/encoder/vp9_encoder.h
+++ b/vp9/encoder/vp9_encoder.h
@@ -443,7 +443,6 @@ typedef struct VP9_COMP {
 
   YV12_BUFFER_CONFIG alt_ref_buffer;
   YV12_BUFFER_CONFIG *frames[MAX_LAG_BUFFERS];
-  int fixed_divide[512];
 
 #if CONFIG_INTERNAL_STATS
   unsigned int mode_chosen_counts[MAX_MODES];
diff --git a/vp9/encoder/vp9_temporal_filter.c b/vp9/encoder/vp9_temporal_filter.c
index ca9339155..a176bbf91 100644
--- a/vp9/encoder/vp9_temporal_filter.c
+++ b/vp9/encoder/vp9_temporal_filter.c
@@ -27,6 +27,8 @@
 #include "vpx_ports/vpx_timer.h"
 #include "vpx_scale/vpx_scale.h"
 
+static int fixed_divide[512];
+
 static void temporal_filter_predictors_mb_c(MACROBLOCKD *xd,
                                             uint8_t *y_mb_ptr,
                                             uint8_t *u_mb_ptr,
@@ -78,6 +80,14 @@ static void temporal_filter_predictors_mb_c(MACROBLOCKD *xd,
                             kernel, mv_precision_uv, x, y);
 }
 
+void vp9_temporal_filter_init() {
+  int i;
+
+  fixed_divide[0] = 0;
+  for (i = 1; i < 512; ++i)
+    fixed_divide[i] = 0x80000 / i;
+}
+
 void vp9_temporal_filter_apply_c(uint8_t *frame1,
                                  unsigned int stride,
                                  uint8_t *frame2,
@@ -294,7 +304,7 @@ static void temporal_filter_iterate_c(VP9_COMP *cpi,
       for (i = 0, k = 0; i < 16; i++) {
         for (j = 0; j < 16; j++, k++) {
           unsigned int pval = accumulator[k] + (count[k] >> 1);
-          pval *= cpi->fixed_divide[count[k]];
+          pval *= fixed_divide[count[k]];
           pval >>= 19;
 
           dst1[byte] = (uint8_t)pval;
@@ -315,13 +325,13 @@ static void temporal_filter_iterate_c(VP9_COMP *cpi,
 
           // U
           unsigned int pval = accumulator[k] + (count[k] >> 1);
-          pval *= cpi->fixed_divide[count[k]];
+          pval *= fixed_divide[count[k]];
           pval >>= 19;
           dst1[byte] = (uint8_t)pval;
 
           // V
           pval = accumulator[m] + (count[m] >> 1);
-          pval *= cpi->fixed_divide[count[m]];
+          pval *= fixed_divide[count[m]];
           pval >>= 19;
           dst2[byte] = (uint8_t)pval;
 
diff --git a/vp9/encoder/vp9_temporal_filter.h b/vp9/encoder/vp9_temporal_filter.h
index 3028d7884..9453dc16a 100644
--- a/vp9/encoder/vp9_temporal_filter.h
+++ b/vp9/encoder/vp9_temporal_filter.h
@@ -15,6 +15,7 @@
 extern "C" {
 #endif
 
+void vp9_temporal_filter_init();
 void vp9_temporal_filter_prepare(VP9_COMP *cpi, int distance);
 void vp9_configure_arnr_filter(VP9_COMP *cpi,
                                const unsigned int frames_to_arnr,
-- 
2.40.0