Send hardware video frames with mailboxes.

cc/resources/video_resource_updater.cc

Index: cc/resources/video_resource_updater.cc
diff --git a/cc/resources/video_resource_updater.cc b/cc/resources/video_resource_updater.cc
index 11bfc314d1160604a7a6f4d6f0d1cac5b6b865e5..73cde2373644b4d5f98166cec18cb6d606887697 100644
--- a/cc/resources/video_resource_updater.cc
+++ b/cc/resources/video_resource_updater.cc
@@ -19,8 +19,7 @@ const unsigned kRGBResourceFormat = GL_RGBA;
 
 namespace cc {
 
-VideoFrameExternalResources::VideoFrameExternalResources()
-    : type(NONE), hardware_resource(0) {}
+VideoFrameExternalResources::VideoFrameExternalResources() : type(NONE) {}
 
 VideoFrameExternalResources::~VideoFrameExternalResources() {}
 
@@ -35,6 +34,18 @@ VideoResourceUpdater::~VideoResourceUpdater() {
   }
 }
 
+VideoFrameExternalResources VideoResourceUpdater::
+    CreateExternalResourcesFromVideoFrame(
+        const scoped_refptr<media::VideoFrame>& video_frame) {
+  if (!VerifyFrame(video_frame))
+    return VideoFrameExternalResources();
+
+  if (video_frame->format() == media::VideoFrame::NATIVE_TEXTURE)
+    return CreateForHardwarePlanes(video_frame);
+  else
+    return CreateForSoftwarePlanes(video_frame);
+}
+
 bool VideoResourceUpdater::VerifyFrame(
     const scoped_refptr<media::VideoFrame>& video_frame) {
   // If these fail, we'll have to add logic that handles offset bitmap/texture
@@ -98,9 +109,6 @@ static gfx::Size SoftwarePlaneDimension(
 
 VideoFrameExternalResources VideoResourceUpdater::CreateForSoftwarePlanes(
     const scoped_refptr<media::VideoFrame>& video_frame) {
-  if (!VerifyFrame(video_frame))
-    return VideoFrameExternalResources();
-
   media::VideoFrame::Format input_frame_format = video_frame->format();
 
 #if defined(GOOGLE_TV)
@@ -291,9 +299,6 @@ VideoFrameExternalResources VideoResourceUpdater::CreateForSoftwarePlanes(
 
 VideoFrameExternalResources VideoResourceUpdater::CreateForHardwarePlanes(
     const scoped_refptr<media::VideoFrame>& video_frame) {
-  if (!VerifyFrame(video_frame))
-    return VideoFrameExternalResources();
-
   media::VideoFrame::Format frame_format = video_frame->format();
 
   DCHECK_EQ(frame_format, media::VideoFrame::NATIVE_TEXTURE);
@@ -322,25 +327,28 @@ VideoFrameExternalResources VideoResourceUpdater::CreateForHardwarePlanes(
       return VideoFrameExternalResources();
   }
 
-  external_resources.hardware_resource =
-      resource_provider_->CreateResourceFromExternalTexture(
-          video_frame->texture_id());
-
+  // Hold a reference to the VideoFrame in the callback, so the frame stays
+  // alive while the texture is in use. As long as the frame is alive, the
+  // texture inside it will not be reused by the decoder.
   TextureMailbox::ReleaseCallback callback_to_return_resource =
-      base::Bind(&ReturnTexture,
-                 base::Unretained(resource_provider_),
-                 external_resources.hardware_resource);
-  external_resources.hardware_release_callback = callback_to_return_resource;
+      base::Bind(&ReturnTexture, video_frame);
+
+  external_resources.mailboxes.push_back(
+      TextureMailbox(video_frame->texture_mailbox(),
+                     callback_to_return_resource,
+                     video_frame->texture_mailbox_sync_point()));
   return external_resources;
 }
 
 // static
 void VideoResourceUpdater::ReturnTexture(
-    ResourceProvider* resource_provider,
-    unsigned resource_id,
+    scoped_refptr<media::VideoFrame> video_frame,
     unsigned sync_point,
     bool lost_resource) {
-  resource_provider->DeleteResource(resource_id);
+    video_frame->set_texture_mailbox_sync_point(sync_point);
+
+  // Dropping the reference to VideoFrame here releases the texture back to the
+  // decoder.
 }
 
 // static