Test extreme inputs in frame scale functions

Change-Id: Ic149e3cb59be2ee0f98a3fcfd83226ad5ea30c99

diff --git a/test/vpx_scale_test.h b/test/vpx_scale_test.h
index 18909d1b5ef303c3bcf5209c135146307b52d29b..dcbd02b91fa3e9cf0f6f6a5a243b1784240b0328 100644 (file)
--- a/test/vpx_scale_test.h
+++ b/test/vpx_scale_test.h
@@ -15,11 +15,14 @@
 
 #include "./vpx_config.h"
 #include "./vpx_scale_rtcd.h"
+#include "test/acm_random.h"
 #include "test/clear_system_state.h"
 #include "test/register_state_check.h"
 #include "vpx_mem/vpx_mem.h"
 #include "vpx_scale/yv12config.h"
 
+using libvpx_test::ACMRandom;
+
 namespace libvpx_test {
 
 class VpxScaleBase {
@@ -65,12 +68,12 @@ class VpxScaleBase {
     ResetScaleImage(&img_, src_width, src_height);
     ResetScaleImage(&ref_img_, dst_width, dst_height);
     ResetScaleImage(&dst_img_, dst_width, dst_height);
-    FillPlane(img_.y_buffer, img_.y_crop_width, img_.y_crop_height,
-              img_.y_stride);
-    FillPlane(img_.u_buffer, img_.uv_crop_width, img_.uv_crop_height,
-              img_.uv_stride);
-    FillPlane(img_.v_buffer, img_.uv_crop_width, img_.uv_crop_height,
-              img_.uv_stride);
+    FillPlaneExtreme(img_.y_buffer, img_.y_crop_width, img_.y_crop_height,
+                     img_.y_stride);
+    FillPlaneExtreme(img_.u_buffer, img_.uv_crop_width, img_.uv_crop_height,
+                     img_.uv_stride);
+    FillPlaneExtreme(img_.v_buffer, img_.uv_crop_width, img_.uv_crop_height,
+                     img_.uv_stride);
   }
 
   void DeallocImages() {
@@ -89,7 +92,8 @@ class VpxScaleBase {
   static const int kBufFiller = 123;
   static const int kBufMax = kBufFiller - 1;
 
-  static void FillPlane(uint8_t *buf, int width, int height, int stride) {
+  static void FillPlane(uint8_t *const buf, const int width, const int height,
+                        const int stride) {
     for (int y = 0; y < height; ++y) {
       for (int x = 0; x < width; ++x) {
         buf[x + (y * stride)] = (x + (width * y)) % kBufMax;
@@ -97,6 +101,16 @@ class VpxScaleBase {
     }
   }
 
+  static void FillPlaneExtreme(uint8_t *const buf, const int width,
+                               const int height, const int stride) {
+    ACMRandom rnd;
+    for (int y = 0; y < height; ++y) {
+      for (int x = 0; x < width; ++x) {
+        buf[x + (y * stride)] = rnd.Rand8() % 2 ? 255 : 0;
+      }
+    }
+  }
+
   static void ExtendPlane(uint8_t *buf, int crop_width, int crop_height,
                           int width, int height, int stride, int padding) {
     // Copy the outermost visible pixel to a distance of at least 'padding.'