Add VEA supported profiles to GPUInfo.

content/public/renderer/video_encode_accelerator.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 "content/public/renderer/video_encode_accelerator.h"
 
 #include "base/task_runner_util.h"
 #include "content/common/gpu/client/gpu_video_encode_accelerator_host.h"
 #include "content/renderer/render_thread_impl.h"
 #include "media/filters/gpu_video_accelerator_factories.h"
 
 namespace content {
 
+// The supported profiles of video encode accelerator.
+static std::vector<media::VideoEncodeAccelerator::SupportedProfile>*
+    g_supported_profiles = NULL;
+
+static void GetSupportedVideoEncodeAcceleratorProfilesInternal(
+    scoped_refptr<media::GpuVideoAcceleratorFactories> gpu_factories,
+    base::WaitableEvent* waiter,
+    std::vector<media::VideoEncodeAccelerator::SupportedProfile>* profiles) {
+  scoped_ptr<media::VideoEncodeAccelerator> video_encoder =
+      gpu_factories->CreateVideoEncodeAccelerator();
+  if (video_encoder)
+    *profiles = video_encoder->GetSupportedProfiles();
+  waiter->Signal();
+}
+
 void CreateVideoEncodeAccelerator(
     const OnCreateVideoEncodeAcceleratorCallback& callback) {
   DCHECK(!callback.is_null());
 
   scoped_refptr<media::GpuVideoAcceleratorFactories> gpu_factories =
         RenderThreadImpl::current()->GetGpuFactories();
   if (!gpu_factories.get()) {
     callback.Run(NULL, scoped_ptr<media::VideoEncodeAccelerator>());
     return;
   }
 
   scoped_refptr<base::SingleThreadTaskRunner> encode_task_runner =
       gpu_factories->GetTaskRunner();
   base::PostTaskAndReplyWithResult(
       encode_task_runner.get(),
       FROM_HERE,
       base::Bind(
           &media::GpuVideoAcceleratorFactories::CreateVideoEncodeAccelerator,
           gpu_factories),
       base::Bind(callback, encode_task_runner));
 }
 
 std::vector<media::VideoEncodeAccelerator::SupportedProfile>

[kcwu, 2014/09/19 11:15:54]

Since you cached the result to global variable, change the return type to const
reference to avoid copy?

 GetSupportedVideoEncodeAcceleratorProfiles() {
-  return GpuVideoEncodeAcceleratorHost::GetSupportedProfiles();
+  if (!g_supported_profiles) {
+    g_supported_profiles =
+        new std::vector<media::VideoEncodeAccelerator::SupportedProfile>();
+    scoped_refptr<media::GpuVideoAcceleratorFactories> gpu_factories =
+        RenderThreadImpl::current()->GetGpuFactories();
+    base::WaitableEvent waiter(true, false);
+    gpu_factories->GetTaskRunner()->PostTask(
+        FROM_HERE,
+        base::Bind(&GetSupportedVideoEncodeAcceleratorProfilesInternal,
+                   gpu_factories,
+                   &waiter,
+                   g_supported_profiles));
+    waiter.Wait();
+  }
+  return *g_supported_profiles;
 }
 
 }  // namespace content