media: Implement zero-copy video playback for VP8.

media/base/video_frame.cc

Index: media/base/video_frame.cc
diff --git a/media/base/video_frame.cc b/media/base/video_frame.cc
index b4a8392ff8c848dc9edf9ba0ddd7ce181ad0c7b5..cd05dc44cf5c6a62340c3a1c34979f214ddee04f 100644
--- a/media/base/video_frame.cc
+++ b/media/base/video_frame.cc
@@ -212,6 +212,35 @@ scoped_refptr<VideoFrame> VideoFrame::WrapYUV420NativeTextures(
 }
 
 // static
+scoped_refptr<VideoFrame> VideoFrame::WrapYV12ANativeTextures(
+    const gpu::MailboxHolder& y_mailbox_holder,
+    const gpu::MailboxHolder& u_mailbox_holder,
+    const gpu::MailboxHolder& v_mailbox_holder,
+    const gpu::MailboxHolder& a_mailbox_holder,
+    const ReleaseMailboxCB& mailbox_holder_release_cb,
+    const gfx::Size& coded_size,
+    const gfx::Rect& visible_rect,
+    const gfx::Size& natural_size,
+    base::TimeDelta timestamp) {
+  const StorageType storage = STORAGE_OPAQUE;
+  VideoPixelFormat format = PIXEL_FORMAT_YV12A;
+  if (!IsValidConfig(format, storage, coded_size, visible_rect, natural_size)) {
+    LOG(DFATAL) << __FUNCTION__ << " Invalid config."
+                << ConfigToString(format, storage, coded_size, visible_rect,
+                                  natural_size);
+    return nullptr;
+  }
+
+  gpu::MailboxHolder mailbox_holders[kMaxPlanes];
+  mailbox_holders[kYPlane] = y_mailbox_holder;
+  mailbox_holders[kUPlane] = u_mailbox_holder;
+  mailbox_holders[kVPlane] = v_mailbox_holder;
+  mailbox_holders[kAPlane] = a_mailbox_holder;
+  return new VideoFrame(format, storage, coded_size, visible_rect, natural_size,
+                        mailbox_holders, mailbox_holder_release_cb, timestamp);
+}
+
+// static
 scoped_refptr<VideoFrame> VideoFrame::WrapExternalData(
     VideoPixelFormat format,
     const gfx::Size& coded_size,