1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef MEDIA_MOJO_SERVICES_MOJO_RENDERER_IMPL_H_
6 #define MEDIA_MOJO_SERVICES_MOJO_RENDERER_IMPL_H_
8 #include "base/macros.h"
9 #include "base/memory/weak_ptr.h"
10 #include "media/base/renderer.h"
11 #include "media/mojo/interfaces/media_renderer.mojom.h"
14 class SingleThreadTaskRunner;
18 class ServiceProvider;
22 class DemuxerStreamProvider;
24 // A media::Renderer that proxies to a mojo::MediaRenderer. That
25 // mojo::MediaRenderer proxies back to the MojoRendererImpl via the
26 // mojo::MediaRendererClient interface.
28 // MojoRendererImpl implements media::Renderer for use as either an audio
31 // TODO(tim): Only audio is currently supported. http://crbug.com/410451.
32 class MojoRendererImpl : public Renderer, public mojo::MediaRendererClient {
34 // |task_runner| is the TaskRunner on which all methods are invoked.
35 // |demuxer_stream_provider| provides encoded streams for decoding and
37 // |audio_renderer_provider| is a ServiceProvider from a connected
38 // Application that is hosting a mojo::MediaRenderer.
40 const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
41 DemuxerStreamProvider* demuxer_stream_provider,
42 mojo::ServiceProvider* audio_renderer_provider);
43 virtual ~MojoRendererImpl();
45 // Renderer implementation.
46 virtual void Initialize(const base::Closure& init_cb,
47 const StatisticsCB& statistics_cb,
48 const base::Closure& ended_cb,
49 const PipelineStatusCB& error_cb,
50 const BufferingStateCB& buffering_state_cb) OVERRIDE;
51 virtual void Flush(const base::Closure& flush_cb) OVERRIDE;
52 virtual void StartPlayingFrom(base::TimeDelta time) OVERRIDE;
53 virtual void SetPlaybackRate(float playback_rate) OVERRIDE;
54 virtual void SetVolume(float volume) OVERRIDE;
55 virtual base::TimeDelta GetMediaTime() OVERRIDE;
56 virtual bool HasAudio() OVERRIDE;
57 virtual bool HasVideo() OVERRIDE;
58 virtual void SetCdm(MediaKeys* cdm) OVERRIDE;
60 // mojo::MediaRendererClient implementation.
61 virtual void OnTimeUpdate(int64_t time_usec,
62 int64_t max_time_usec) MOJO_OVERRIDE;
63 virtual void OnBufferingStateChange(mojo::BufferingState state) MOJO_OVERRIDE;
64 virtual void OnEnded() MOJO_OVERRIDE;
65 virtual void OnError() MOJO_OVERRIDE;
68 // Called when |remote_audio_renderer_| has finished initializing.
71 // Task runner used to execute pipeline tasks.
72 scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
74 DemuxerStreamProvider* demuxer_stream_provider_;
75 mojo::MediaRendererPtr remote_audio_renderer_;
77 // Callbacks passed to Initialize() that we forward messages from
78 // |remote_audio_renderer_| through.
79 base::Closure init_cb_;
80 base::Closure ended_cb_;
81 PipelineStatusCB error_cb_;
82 BufferingStateCB buffering_state_cb_;
84 base::WeakPtrFactory<MojoRendererImpl> weak_factory_;
85 DISALLOW_COPY_AND_ASSIGN(MojoRendererImpl);
90 #endif // MEDIA_MOJO_SERVICES_MOJO_RENDERER_IMPL_H_