media/mojo/services/default_mojo_media_client.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/default_mojo_media_client.h"

#include "base/memory/ptr_util.h"
#include "base/message_loop/message_loop.h"
#include "base/run_loop.h"
#include "base/threading/thread_task_runner_handle.h"
#include "media/audio/audio_device_description.h"
#include "media/audio/audio_manager.h"
#include "media/audio/audio_output_stream_sink.h"
#include "media/base/cdm_factory.h"
#include "media/base/media.h"
#include "media/base/media_log.h"
#include "media/base/null_video_sink.h"
#include "media/base/renderer_factory.h"
#include "media/cdm/default_cdm_factory.h"
#include "media/renderers/default_renderer_factory.h"
#include "media/renderers/gpu_video_accelerator_factories.h"

namespace media {

DefaultMojoMediaClient::DefaultMojoMediaClient() {}

DefaultMojoMediaClient::~DefaultMojoMediaClient() {
  DVLOG(1) << __FUNCTION__;
  // AudioManager destructor requires MessageLoop.
  // Destroy it before the message loop goes away.
  audio_manager_.reset();
  // Flush the message loop to ensure that the audio manager is destroyed.
  base::RunLoop().RunUntilIdle();
}

void DefaultMojoMediaClient::Initialize() {
  InitializeMediaLibrary();
  // TODO(dalecurtis): We should find a single owner per process for the audio
  // manager or make it a lazy instance.  It's not safe to call Get()/Create()
  // across multiple threads...
  AudioManager* audio_manager = AudioManager::Get();
  if (!audio_manager) {
    audio_manager_ = media::AudioManager::CreateForTesting(
        base::ThreadTaskRunnerHandle::Get());
    audio_manager = audio_manager_.get();
    // Flush the message loop to ensure that the audio manager is initialized.
    base::RunLoop().RunUntilIdle();
  }
}

scoped_refptr<AudioRendererSink>
DefaultMojoMediaClient::CreateAudioRendererSink(
    const std::string& /* audio_device_id */) {
  return new AudioOutputStreamSink();
}

std::unique_ptr<VideoRendererSink>
DefaultMojoMediaClient::CreateVideoRendererSink(
    const scoped_refptr<base::SingleThreadTaskRunner>& task_runner) {
  return base::MakeUnique<NullVideoSink>(
      false, base::TimeDelta::FromSecondsD(1.0 / 60),
      NullVideoSink::NewFrameCB(), task_runner);
}

std::unique_ptr<RendererFactory> DefaultMojoMediaClient::CreateRendererFactory(
    const scoped_refptr<MediaLog>& media_log) {
  return base::MakeUnique<DefaultRendererFactory>(
      std::move(media_log), nullptr,
      DefaultRendererFactory::GetGpuFactoriesCB());
}

std::unique_ptr<CdmFactory> DefaultMojoMediaClient::CreateCdmFactory(
    shell::mojom::InterfaceProvider* /* interface_provider */) {
  DVLOG(1) << __FUNCTION__;
  return base::MakeUnique<DefaultCdmFactory>();
}

}  // namespace media