commit 692669f9f59cd4b25c8453796915d997c89a5f1e
author Andrey Norkin <anorkin@netflix.com> Thu Mar 15 15:26:59 2018 -0700
committer Yaowu Xu <yaowu@google.com> Tue Mar 20 00:02:16 2018 +0000
tree e12586680ac9f08c0744f8323f918efe912584c5
parent 3cab623c62657f6fd5fffc06949c7aae0830f088

[NORMATIVE] Film grain template init

BUG=aomedia:1595

Change-Id: Ic9f213180de62d42710cce627532e5514458b76e

aom_dsp/grain_synthesis.c

diff --git a/aom_dsp/grain_synthesis.c b/aom_dsp/grain_synthesis.c
index 9764ee3..01f518e 100644
--- a/aom_dsp/grain_synthesis.c
+++ b/aom_dsp/grain_synthesis.c
@@ -443,19 +443,26 @@
   if (params->num_y_points > 0) ++num_pos_chroma;
   int rounding_offset = (1 << (params->ar_coeff_shift - 1));
 
-  for (int i = 0; i < chroma_block_size_y; i++)
-    for (int j = 0; j < chroma_block_size_x; j++) {
-      if (params->num_cb_points)
+  if (params->num_cb_points) {
+    init_random_generator(7 << 5, params->random_seed);
+
+    for (int i = 0; i < chroma_block_size_y; i++)
+      for (int j = 0; j < chroma_block_size_x; j++)
         cb_grain_block[i * chroma_grain_stride + j] =
             (gaussian_sequence[get_random_number(gauss_bits)] +
              ((1 << gauss_sec_shift) >> 1)) >>
             gauss_sec_shift;
-      if (params->num_cr_points)
+  }
+  if (params->num_cr_points) {
+    init_random_generator(11 << 5, params->random_seed);
+
+    for (int i = 0; i < chroma_block_size_y; i++)
+      for (int j = 0; j < chroma_block_size_x; j++)
         cr_grain_block[i * chroma_grain_stride + j] =
             (gaussian_sequence[get_random_number(gauss_bits)] +
              ((1 << gauss_sec_shift) >> 1)) >>
             gauss_sec_shift;
-    }
+  }
 
   for (int i = top_pad; i < chroma_block_size_y - bottom_pad; i++)
     for (int j = left_pad; j < chroma_block_size_x - right_pad; j++) {