Adding YUVA support for enabling Alpha Playback

cc/yuva_video_draw_quad.cc

Index: cc/yuva_video_draw_quad.cc
diff --git a/cc/yuva_video_draw_quad.cc b/cc/yuva_video_draw_quad.cc
new file mode 100644
index 0000000000000000000000000000000000000000..696eb8da02032f6a323998ca0069b759411450ba
--- /dev/null
+++ b/cc/yuva_video_draw_quad.cc
@@ -0,0 +1,62 @@
+// Copyright 2012 The Chromium Authors. All rights reserved.

[jamesr, 2013/02/14 01:55:19]

2013

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "cc/yuva_video_draw_quad.h"
+
+#include "base/logging.h"
+
+namespace cc {
+
+YUVAVideoDrawQuad::YUVAVideoDrawQuad() {}
+YUVAVideoDrawQuad::~YUVAVideoDrawQuad() {}
+
+scoped_ptr<YUVAVideoDrawQuad> YUVAVideoDrawQuad::Create() {
+    return make_scoped_ptr(new YUVAVideoDrawQuad);
+}
+
+void YUVAVideoDrawQuad::SetNew(const SharedQuadState* shared_quad_state,
+                               gfx::Rect rect,
+                               gfx::Rect opaque_rect,
+                               gfx::SizeF tex_scale,
+                               const VideoLayerImpl::FramePlane& y_plane,
+                               const VideoLayerImpl::FramePlane& u_plane,
+                               const VideoLayerImpl::FramePlane& v_plane,
+                               const VideoLayerImpl::FramePlane& a_plane) {
+  gfx::Rect visible_rect = rect;

[jzern, 2013/02/13 19:56:14]

4 space indent is the local norm

+  bool needs_blending = true;
+  DrawQuad::SetAll(shared_quad_state, DrawQuad::YUVA_VIDEO_CONTENT, rect,
+                   opaque_rect, visible_rect, needs_blending);
+  this->tex_scale = tex_scale;
+  this->y_plane = y_plane;
+  this->u_plane = u_plane;
+  this->v_plane = v_plane;
+  this->a_plane = a_plane;
+}
+
+void YUVAVideoDrawQuad::SetAll(const SharedQuadState* shared_quad_state,
+                               gfx::Rect rect,
+                               gfx::Rect opaque_rect,
+                               gfx::Rect visible_rect,
+                               bool needs_blending,
+                               gfx::SizeF tex_scale,
+                               const VideoLayerImpl::FramePlane& y_plane,
+                               const VideoLayerImpl::FramePlane& u_plane,
+                               const VideoLayerImpl::FramePlane& v_plane,
+                               const VideoLayerImpl::FramePlane& a_plane) {
+  DrawQuad::SetAll(shared_quad_state, DrawQuad::YUVA_VIDEO_CONTENT, rect,
+                   opaque_rect, visible_rect, needs_blending);
+  this->tex_scale = tex_scale;
+  this->y_plane = y_plane;
+  this->u_plane = u_plane;
+  this->v_plane = v_plane;
+  this->a_plane = a_plane;
+}
+
+const YUVAVideoDrawQuad* YUVAVideoDrawQuad::MaterialCast(
+    const DrawQuad* quad) {

[jzern, 2013/02/13 19:56:14]

could be 1 line

+  DCHECK(quad->material == DrawQuad::YUVA_VIDEO_CONTENT);
+  return static_cast<const YUVAVideoDrawQuad*>(quad);
+}
+
+}  // namespace cc