blob: 24a319bc739cec3f97004881ab446e8bedda3e2f [file] [log] [blame]
// 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 "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "media/base/renderer.h"
#include "media/mojo/interfaces/media_renderer.mojom.h"
namespace base {
class SingleThreadTaskRunner;
namespace mojo {
class ServiceProvider;
namespace media {
class DemuxerStreamProvider;
// A media::Renderer that proxies to a mojo::MediaRenderer. That
// mojo::MediaRenderer proxies back to the MojoRendererImpl via the
// mojo::MediaRendererClient interface.
// MojoRendererImpl implements media::Renderer for use as either an audio
// or video renderer.
// TODO(tim): Only audio is currently supported.
class MojoRendererImpl : public Renderer, public mojo::MediaRendererClient {
// |task_runner| is the TaskRunner on which all methods are invoked.
// |audio_renderer_provider| is a ServiceProvider from a connected
// Application that is hosting a mojo::MediaRenderer.
const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
mojo::ServiceProvider* audio_renderer_provider);
~MojoRendererImpl() override;
// Renderer implementation.
void Initialize(DemuxerStreamProvider* demuxer_stream_provider,
const base::Closure& init_cb,
const StatisticsCB& statistics_cb,
const base::Closure& ended_cb,
const PipelineStatusCB& error_cb,
const BufferingStateCB& buffering_state_cb) override;
void Flush(const base::Closure& flush_cb) override;
void StartPlayingFrom(base::TimeDelta time) override;
void SetPlaybackRate(float playback_rate) override;
void SetVolume(float volume) override;
base::TimeDelta GetMediaTime() override;
bool HasAudio() override;
bool HasVideo() override;
void SetCdm(MediaKeys* cdm) override;
// mojo::MediaRendererClient implementation.
void OnTimeUpdate(int64_t time_usec, int64_t max_time_usec) override;
void OnBufferingStateChange(mojo::BufferingState state) override;
void OnEnded() override;
void OnError() override;
// Called when |remote_audio_renderer_| has finished initializing.
void OnInitialized();
// Task runner used to execute pipeline tasks.
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
DemuxerStreamProvider* demuxer_stream_provider_;
mojo::MediaRendererPtr remote_audio_renderer_;
// Callbacks passed to Initialize() that we forward messages from
// |remote_audio_renderer_| through.
base::Closure init_cb_;
base::Closure ended_cb_;
PipelineStatusCB error_cb_;
BufferingStateCB buffering_state_cb_;
// Lock used to serialize access for the following data members.
mutable base::Lock lock_;
base::TimeDelta time_;
// TODO(xhwang): It seems we don't need |max_time_| now. Drop it!
base::TimeDelta max_time_;
base::WeakPtrFactory<MojoRendererImpl> weak_factory_;
} // namespace media