Adding YUVA support for enabling Alpha Playback

cc/output/renderer_pixeltest.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/message_loop.h"
 #include "cc/layers/append_quads_data.h"
 #include "cc/output/gl_renderer.h"
 #include "cc/quads/draw_quad.h"
 #include "cc/quads/picture_draw_quad.h"
 #include "cc/resources/platform_color.h"
@@ skipping 189 matching lines @@
   pass_list.push_back(child_pass.Pass());
   pass_list.push_back(root_pass.Pass());
 
   EXPECT_TRUE(this->RunPixelTestWithReadbackTarget(
       &pass_list,
       child_pass_ptr,
       base::FilePath(FILE_PATH_LITERAL("green_small.png")),
       ExactPixelComparator(true)));
 }
 
+class VideoGLRendererPixelTest : public GLRendererPixelTest {
+ protected:
+  scoped_ptr<YUVVideoDrawQuad> CreateTestYUVVideoDrawQuad(
+      SharedQuadState* shared_state, bool with_alpha) {
+    gfx::Rect rect(this->device_viewport_size_);
+    gfx::Rect opaque_rect(0, 0, 0, 0);
+
+    ResourceProvider::ResourceId y_resource =
+        resource_provider_->CreateResource(
+            this->device_viewport_size_,
+            GL_LUMINANCE,
+            ResourceProvider::TextureUsageAny);
+    ResourceProvider::ResourceId u_resource =
+        resource_provider_->CreateResource(
+            this->device_viewport_size_,
+            GL_LUMINANCE,
+            ResourceProvider::TextureUsageAny);
+    ResourceProvider::ResourceId v_resource =
+        resource_provider_->CreateResource(
+            this->device_viewport_size_,
+            GL_LUMINANCE,
+            ResourceProvider::TextureUsageAny);
+    ResourceProvider::ResourceId a_resource = 0;
+    if (with_alpha) {
+      a_resource = resource_provider_->CreateResource(
+                       this->device_viewport_size_,
+                       GL_LUMINANCE,
+                       ResourceProvider::TextureUsageAny);
+    }
+
+    int w = this->device_viewport_size_.width();
+    int h = this->device_viewport_size_.height();
+    const int y_plane_size = w * h;
+    const int uv_plane_size = ((w + 1) / 2) * ((h + 1) / 2);
+    scoped_ptr<uint8_t[]> y_plane(new uint8_t[y_plane_size]);
+    scoped_ptr<uint8_t[]> u_plane(new uint8_t[uv_plane_size]);
+    scoped_ptr<uint8_t[]> v_plane(new uint8_t[uv_plane_size]);
+    scoped_ptr<uint8_t[]> a_plane;
+    if (with_alpha)
+      a_plane.reset(new uint8_t[y_plane_size]);
+    // YUV values representing Green.
+    memset(y_plane.get(), 149, y_plane_size);
+    memset(u_plane.get(), 43, uv_plane_size);
+    memset(v_plane.get(), 21, uv_plane_size);
+    if (with_alpha)
+      memset(a_plane.get(), 128, y_plane_size);
+
+    gfx::Rect uv_rect((w + 1) / 2, (h + 1) / 2);

[piman, 2013/06/07 02:56:23]

Can you move this before  uv_plane_size, and make  uv_plane_size =
uv_rect.size().GetArea();
That way you prevent any problem in the future.

[enne (OOO), 2013/06/07 02:56:33]

Consider moving uv_rect's declaration above uv_plane_size and making
uv_plane_size just equal to its width * height.

[vignesh, 2013/06/07 04:17:03]

Done. Doing this as piman@ suggested.

+    resource_provider_->SetPixels(y_resource, y_plane.get(), rect, rect,
+                                  gfx::Vector2d());
+    resource_provider_->SetPixels(u_resource, u_plane.get(), uv_rect, uv_rect,
+                                  gfx::Vector2d());
+    resource_provider_->SetPixels(v_resource, v_plane.get(), uv_rect, uv_rect,
+                                  gfx::Vector2d());
+    if (with_alpha) {
+      resource_provider_->SetPixels(a_resource, a_plane.get(), rect, rect,
+                                    gfx::Vector2d());
+    }
+
+    scoped_ptr<YUVVideoDrawQuad> yuv_quad = cc::YUVVideoDrawQuad::Create();
+    yuv_quad->SetNew(shared_state, rect, opaque_rect, gfx::Size(),
+                     y_resource, u_resource, v_resource, a_resource);
+    return yuv_quad.Pass();
+  }
+};
+
+TEST_F(VideoGLRendererPixelTest, SimpleYUVRect) {
+  gfx::Rect rect(this->device_viewport_size_);
+
+  RenderPass::Id id(1, 1);
+  scoped_ptr<RenderPass> pass = CreateTestRootRenderPass(id, rect);
+
+  scoped_ptr<SharedQuadState> shared_state =
+      CreateTestSharedQuadState(gfx::Transform(), rect);
+
+  scoped_ptr<YUVVideoDrawQuad> yuv_quad =
+      CreateTestYUVVideoDrawQuad(shared_state.get(), false);
+
+  pass->quad_list.push_back(yuv_quad.PassAs<DrawQuad>());
+
+  RenderPassList pass_list;
+  pass_list.push_back(pass.Pass());
+
+  EXPECT_TRUE(this->RunPixelTest(
+      &pass_list,
+      base::FilePath(FILE_PATH_LITERAL("green.png")),
+      ExactPixelComparator(true)));
+}
+
+TEST_F(VideoGLRendererPixelTest, SimpleYUVARect) {
+  gfx::Rect rect(this->device_viewport_size_);
+
+  RenderPass::Id id(1, 1);
+  scoped_ptr<RenderPass> pass = CreateTestRootRenderPass(id, rect);
+
+  scoped_ptr<SharedQuadState> shared_state =
+      CreateTestSharedQuadState(gfx::Transform(), rect);
+
+  scoped_ptr<YUVVideoDrawQuad> yuv_quad =
+      CreateTestYUVVideoDrawQuad(shared_state.get(), true);
+
+  pass->quad_list.push_back(yuv_quad.PassAs<DrawQuad>());
+
+  scoped_ptr<SolidColorDrawQuad> color_quad = SolidColorDrawQuad::Create();
+  color_quad->SetNew(shared_state.get(), rect, SK_ColorWHITE, false);
+
+  pass->quad_list.push_back(color_quad.PassAs<DrawQuad>());
+
+  RenderPassList pass_list;
+  pass_list.push_back(pass.Pass());
+
+  EXPECT_TRUE(this->RunPixelTest(
+      &pass_list,
+      base::FilePath(FILE_PATH_LITERAL("green_alpha.png")),
+      ExactPixelComparator(true)));
+}
+
 TYPED_TEST(RendererPixelTest, FastPassColorFilterAlpha) {
   gfx::Rect viewport_rect(this->device_viewport_size_);
 
   RenderPass::Id root_pass_id(1, 1);
   scoped_ptr<RenderPass> root_pass =
       CreateTestRootRenderPass(root_pass_id, viewport_rect);
 
   RenderPass::Id child_pass_id(2, 2);
   gfx::Rect pass_rect(this->device_viewport_size_);
   gfx::Transform transform_to_root;
@@ skipping 753 matching lines @@
 
   EXPECT_TRUE(this->RunPixelTest(
       &pass_list,
       base::FilePath(FILE_PATH_LITERAL("four_blue_green_checkers.png")),
       ExactPixelComparator(true)));
 }
 #endif  // !defined(OS_ANDROID)
 
 }  // namespace
 }  // namespace cc