Integrate Surface requests with MediaPlayerRenderer

media/mojo/services/mojo_renderer_service.cc

 // Copyright 2014 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 "media/mojo/services/mojo_renderer_service.h"
 
 #include <utility>
 
 #include "base/bind.h"
+#include "base/optional.h"
 #include "media/base/audio_renderer_sink.h"
 #include "media/base/media_keys.h"
 #include "media/base/media_url_demuxer.h"
 #include "media/base/renderer.h"
 #include "media/base/video_renderer_sink.h"
 #include "media/mojo/services/demuxer_stream_provider_shim.h"
 #include "media/mojo/services/mojo_cdm_service_context.h"
 
 namespace media {
 
 // Time interval to update media time.
 const int kTimeUpdateIntervalMs = 50;
 
+// static
+mojo::StrongBindingPtr<mojom::Renderer> MojoRendererService::Create(
+    base::WeakPtr<MojoCdmServiceContext> mojo_cdm_service_context,
+    scoped_refptr<AudioRendererSink> audio_sink,
+    std::unique_ptr<VideoRendererSink> video_sink,
+    std::unique_ptr<media::Renderer> renderer,
+    InitiateSurfaceRequestCB initiate_surface_request_cb,
+    mojo::InterfaceRequest<mojom::Renderer> request) {
+  MojoRendererService* mojo_renderer_service = new MojoRendererService(

[dcheng, 2016/10/05 22:37:12]

Nit: auto service = base::MakeUnique<MojoRendererService>(...);

and then just std::move() below.

[tguilbert, 2016/10/05 23:46:21]

I saw your follow up comment. I changed it for a moment because I thought it was
slightly clearer to use a unique_ptr and to save a temp copy via '.get()', but
then I ran into issues because MojoRendererService's ctor is now private, and
base::MakeUnique couldn't access it (and friending it would have defeated the
purpose of the private ctor).

Good point about not needing the setter!

+      mojo_cdm_service_context, std::move(audio_sink), std::move(video_sink),
+      std::move(renderer), initiate_surface_request_cb);
+
+  mojo::StrongBindingPtr<mojom::Renderer> binding =
+      mojo::MakeStrongBinding<mojom::Renderer>(
+          base::WrapUnique(mojo_renderer_service), std::move(request));
+
+  mojo_renderer_service->SetBinding(binding);
+
+  return binding;
+}
+
 MojoRendererService::MojoRendererService(
     base::WeakPtr<MojoCdmServiceContext> mojo_cdm_service_context,
     scoped_refptr<AudioRendererSink> audio_sink,
     std::unique_ptr<VideoRendererSink> video_sink,
-    std::unique_ptr<media::Renderer> renderer)
+    std::unique_ptr<media::Renderer> renderer,
+    InitiateSurfaceRequestCB initiate_surface_request_cb)
     : mojo_cdm_service_context_(mojo_cdm_service_context),
       state_(STATE_UNINITIALIZED),
       playback_rate_(0),
       audio_sink_(std::move(audio_sink)),
       video_sink_(std::move(video_sink)),
       renderer_(std::move(renderer)),
+      initiate_surface_request_cb_(initiate_surface_request_cb),
       weak_factory_(this) {
   DVLOG(1) << __FUNCTION__;
   DCHECK(renderer_);
 
   weak_this_ = weak_factory_.GetWeakPtr();
 }
 
 MojoRendererService::~MojoRendererService() {}
 
 void MojoRendererService::Initialize(
@@ skipping 187 matching lines @@
     const base::Callback<void(bool)>& callback,
     bool success) {
   DVLOG(1) << __FUNCTION__ << "(" << success << ")";
 
   if (success)
     cdm_ = cdm;
 
   callback.Run(success);
 }
 
+void MojoRendererService::InitiateScopedSurfaceRequest(
+    const InitiateScopedSurfaceRequestCallback& callback) {
+  if (initiate_surface_request_cb_.is_null()) {
+    // |renderer_| is likely not of type MediaPlayerRenderer.
+    // This is an unexpected call, and the connection should be closed.
+    mojo::ReportBadMessage("Unexpected call to InitiateScopedSurfaceRequest.");
+    binding_->Close();
+    return;
+  }
+
+  callback.Run(initiate_surface_request_cb_.Run());
+}
+
+void MojoRendererService::SetBinding(
+    mojo::StrongBindingPtr<mojom::Renderer> binding) {
+  binding_ = binding;
+}
 }  // namespace media