Send hardware video frames with mailboxes.

content/browser/renderer_host/surface_texture_transport_client_android.cc

 // Copyright (c) 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 "content/browser/renderer_host/surface_texture_transport_client_android.h"
 
 #include <android/native_window_jni.h>
 
 #include "base/bind.h"
 #include "cc/layers/video_layer.h"
@@ skipping 30 matching lines @@
 
   scoped_refptr<gfx::SurfaceTextureBridge> surface_;
   ANativeWindow* window_;
 };
 
 } // anonymous namespace
 
 SurfaceTextureTransportClient::SurfaceTextureTransportClient()
     : window_(NULL),
       texture_id_(0),
+      texture_mailbox_sync_point_(0),
       surface_id_(0),
       weak_factory_(this) {
 }
 
 SurfaceTextureTransportClient::~SurfaceTextureTransportClient() {
 }
 
 scoped_refptr<cc::Layer> SurfaceTextureTransportClient::Initialize() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   // Use a SurfaceTexture to stream frames to the UI thread.
@@ skipping 36 matching lines @@
 scoped_refptr<media::VideoFrame> SurfaceTextureTransportClient::
     GetCurrentFrame() {
   if (!texture_id_) {
     WebKit::WebGraphicsContext3D* context =
         ImageTransportFactoryAndroid::GetInstance()->GetContext3D();
     context->makeContextCurrent();
     texture_id_ = context->createTexture();
     context->bindTexture(GL_TEXTURE_EXTERNAL_OES, texture_id_);
     context->flush();
     surface_texture_->AttachToGLContext();
+
+    context->genMailboxCHROMIUM(texture_mailbox_.name);
+    context->produceTextureCHROMIUM(kGLTextureExternalOES,
+                                    texture_mailbox_.name);
+    texture_mailbox_sync_point_ = context->insertSyncPoint();
   }
   if (!video_frame_.get()) {
     const gfx::Size size = video_layer_->bounds();
     video_frame_ = media::VideoFrame::WrapNativeTexture(
-        texture_id_, kGLTextureExternalOES,
+        new media::VideoFrame::MailboxHolder(
+            texture_mailbox_,
+            texture_mailbox_sync_point_,
+            media::VideoFrame::MailboxHolder::TextureNoLongerNeededCallback()),
+        kGLTextureExternalOES,
         size,
         gfx::Rect(gfx::Point(), size),
         size,
         base::TimeDelta(),
         media::VideoFrame::ReadPixelsCB(),
         base::Closure());
   }
   surface_texture_->UpdateTexImage();
 
   return video_frame_;
 }
 
 void SurfaceTextureTransportClient::PutCurrentFrame(
     const scoped_refptr<media::VideoFrame>& frame) {
 }
 
 void SurfaceTextureTransportClient::OnSurfaceTextureFrameAvailable() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   video_layer_->SetNeedsDisplay();
 }
 
 } // namespace content