Implement "hole" video frame.

In order to support out-of-band compositing of protected video
content in Chrome, it is necessary to have a transparent hole in
Chrome's HTML rendering so that video playing "beneath" the HTML
elements can be seen through.
    
To accomplish the scenario stated above, define a "hole" video frame
which would clear the region where video would have been composited.
In CC, this is done by sending a transparent black SolidColorDrawQuad
with blending disabled.

Review URL: https://chromiumcodereview.appspot.com/12255032

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@185841 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 8 insertions, 0 deletions

diff --git a/media/base/video_frame.h b/media/base/video_frame.h
index 3483e91..07697c2 100644
--- a/media/base/video_frame.h
+++ b/media/base/video_frame.h
@@ -43,6 +43,9 @@ class MEDIA_EXPORT VideoFrame : public base::RefCountedThreadSafe<VideoFrame> {
     EMPTY = 9,  // An empty frame.
     I420 = 11,  // 12bpp YVU planar 1x1 Y, 2x2 UV samples.
     NATIVE_TEXTURE = 12,  // Native texture.  Pixel-format agnostic.
+#if defined(GOOGLE_TV)
+    HOLE = 13,  // Hole frame.
+#endif
   };
 
   // Creates a new frame in system memory with given parameters. Buffers for
@@ -125,6 +128,11 @@ class MEDIA_EXPORT VideoFrame : public base::RefCountedThreadSafe<VideoFrame> {
   // equivalent of RGB(0,0,0).
   static scoped_refptr<VideoFrame> CreateBlackFrame(const gfx::Size& size);
 
+#if defined(GOOGLE_TV)
+  // Allocates a hole frame.
+  static scoped_refptr<VideoFrame> CreateHoleFrame(const gfx::Size& size);
+#endif
+
   Format format() const { return format_; }
 
   const gfx::Size& coded_size() const { return coded_size_; }