Add video-rendering to mojo media pipeline.

media/mojo/services/video_overlay_factory.cc

-// Copyright 2015 The Chromium Authors. All rights reserved.
+// Copyright 2016 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 "chromecast/renderer/media/hole_frame_factory.h"
+#include "media/mojo/services/video_overlay_factory.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "gpu/GLES2/gl2extchromium.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "media/base/video_frame.h"
 #include "media/renderers/gpu_video_accelerator_factories.h"
 
-namespace chromecast {
 namespace media {
 
-HoleFrameFactory::HoleFrameFactory(
+VideoOverlayFactory::VideoOverlayFactory(

[xhwang, 2016/04/12 19:40:37]

Newbie question. Does this class work in all processes?

[alokp, 2016/04/19 00:16:07]

So far it has only been used in the renderer process, but technically can run in
any process where GpuVideoAcceleratorFactories is available.

     ::media::GpuVideoAcceleratorFactories* gpu_factories)
     : gpu_factories_(gpu_factories), texture_(0), image_id_(0) {
   if (gpu_factories_) {
-    std::unique_ptr<::media::GpuVideoAcceleratorFactories::ScopedGLContextLock>
-        lock(gpu_factories_->GetGLContextLock());
+    scoped_ptr<::media::GpuVideoAcceleratorFactories::ScopedGLContextLock> lock(

[xhwang, 2016/04/12 19:40:37]

We should keep using unique_ptr

[alokp, 2016/04/19 00:16:07]

Done.

+        gpu_factories_->GetGLContextLock());
     CHECK(lock);
     gpu::gles2::GLES2Interface* gl = lock->ContextGL();
 
     gl->GenTextures(1, &texture_);
     gl->BindTexture(GL_TEXTURE_2D, texture_);
     image_id_ = gl->CreateGpuMemoryBufferImageCHROMIUM(1, 1, GL_RGBA,
                                                        GL_READ_WRITE_CHROMIUM);
     CHECK(image_id_);
     gl->BindTexImage2DCHROMIUM(GL_TEXTURE_2D, image_id_);
 
     gl->GenMailboxCHROMIUM(mailbox_.name);
     gl->ProduceTextureDirectCHROMIUM(texture_, GL_TEXTURE_2D, mailbox_.name);
 
     const GLuint64 fence_sync = gl->InsertFenceSyncCHROMIUM();
     gl->ShallowFlushCHROMIUM();
     gl->GenSyncTokenCHROMIUM(fence_sync, sync_token_.GetData());
   }
 }
 
-HoleFrameFactory::~HoleFrameFactory() {
+VideoOverlayFactory::~VideoOverlayFactory() {
   if (texture_) {
-    std::unique_ptr<::media::GpuVideoAcceleratorFactories::ScopedGLContextLock>
-        lock(gpu_factories_->GetGLContextLock());
+    scoped_ptr<::media::GpuVideoAcceleratorFactories::ScopedGLContextLock> lock(
+        gpu_factories_->GetGLContextLock());
     CHECK(lock);
     gpu::gles2::GLES2Interface* gl = lock->ContextGL();
     gl->BindTexture(GL_TEXTURE_2D, texture_);
     gl->ReleaseTexImage2DCHROMIUM(GL_TEXTURE_2D, image_id_);
     gl->DeleteTextures(1, &texture_);
     gl->DestroyImageCHROMIUM(image_id_);
   }
 }
 
-scoped_refptr<::media::VideoFrame> HoleFrameFactory::CreateHoleFrame(
+scoped_refptr<::media::VideoFrame> VideoOverlayFactory::CreateFrame(
     const gfx::Size& size) {
   // No texture => audio device.  size empty => video has one dimension = 0.
   // Dimension 0 case triggers a DCHECK later on in TextureMailbox if we push
   // through the overlay path.
   if (!texture_ || size.IsEmpty()) {
-    LOG(INFO) << "Create black frame " << size.width() << "x" << size.height();
+    DVLOG(1) << "Create black frame " << size.width() << "x" << size.height();
     return ::media::VideoFrame::CreateBlackFrame(gfx::Size(1, 1));
   }
 
-  LOG(INFO) << "Create hole frame " << size.width() << "x" << size.height();
+  DVLOG(1) << "Create overlay frame " << size.width() << "x" << size.height();
   scoped_refptr<::media::VideoFrame> frame =
       ::media::VideoFrame::WrapNativeTexture(
           ::media::PIXEL_FORMAT_XRGB,
           gpu::MailboxHolder(mailbox_, sync_token_, GL_TEXTURE_2D),
           ::media::VideoFrame::ReleaseMailboxCB(),
           size,                // coded_size
           gfx::Rect(size),     // visible rect
           size,                // natural size
           base::TimeDelta());  // timestamp
   CHECK(frame);
   frame->metadata()->SetBoolean(::media::VideoFrameMetadata::ALLOW_OVERLAY,
                                 true);
   return frame;
 }
 
 }  // namespace media
-}  // namespace chromecast