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| 1 // Copyright 2016 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. |
| 4 |
| 5 #ifndef MEDIA_REMOTING_REMOTING_CONTROLLER_H_ |
| 6 #define MEDIA_REMOTING_REMOTING_CONTROLLER_H_ |
| 7 |
| 8 #include "base/callback.h" |
| 9 #include "base/memory/weak_ptr.h" |
| 10 #include "media/base/media_observer.h" |
| 11 #include "media/mojo/interfaces/remoting.mojom.h" |
| 12 #include "mojo/public/cpp/bindings/binding.h" |
| 13 |
| 14 namespace base { |
| 15 class SingleThreadTaskRunner; |
| 16 } |
| 17 |
| 18 // This class does the following: |
| 19 // 1) Sends/Receives messages from/to Remoter; |
| 20 // 2) Monitors player events as a MediaObserver; |
| 21 // 3) May trigger the switch of the media renderer between local playback |
| 22 // and remoting. |
| 23 // |
| 24 namespace media { |
| 25 |
| 26 class RemotingController final : public MediaObserver, |
| 27 public mojom::RemotingSource { |
| 28 public: |
| 29 RemotingController(mojom::RemotingSourceRequest source_request, |
| 30 mojom::RemoterPtr remoter); |
| 31 ~RemotingController() override; |
| 32 |
| 33 // RemotingSource implementations. |
| 34 void OnSinkAvailable() override; |
| 35 void OnSinkGone() override; |
| 36 void OnStarted() override; |
| 37 void OnStartFailed(mojom::RemotingStartFailReason reason) override; |
| 38 void OnMessageFromSink(const std::vector<uint8_t>& message) override; |
| 39 void OnStopped(mojom::RemotingStopReason reason) override; |
| 40 |
| 41 // MediaObserver implementations. |
| 42 // This is called when the video element or its ancestor enters full screen. |
| 43 // We currently use this as an indicator for immersive playback. May add other |
| 44 // criteria (e.g. the actual display width/height of the video element) in |
| 45 // future. |
| 46 void OnEnteredFullscreen() override; |
| 47 void OnExitedFullscreen() override; |
| 48 void OnSetCdm(CdmContext* cdm_context) override; |
| 49 void OnMetadataChanged(const PipelineMetadata& metadata) override; |
| 50 |
| 51 using SwitchRendererCallback = base::Callback<void()>; |
| 52 void SetSwitchRendererCallback(const SwitchRendererCallback& cb); |
| 53 |
| 54 // Tells which renderer should be used. |
| 55 bool is_remoting() const { |
| 56 DCHECK(task_runner_->BelongsToCurrentThread()); |
| 57 return is_remoting_; |
| 58 } |
| 59 |
| 60 base::WeakPtr<RemotingController> GetWeakPtr() { |
| 61 return weak_factory_.GetWeakPtr(); |
| 62 } |
| 63 |
| 64 private: |
| 65 bool IsVideoCodecSupported(); |
| 66 bool IsAudioCodecSupported(); |
| 67 |
| 68 // Helper to decide whether to enter or leave Remoting mode. |
| 69 bool ShouldBeRemoting(); |
| 70 |
| 71 // Determines whether to enter or leave Remoting mode and switches if |
| 72 // necessary. |
| 73 void UpdateAndMaybeSwitch(); |
| 74 |
| 75 // Indicates if this media element or its ancestor enters full screen. |
| 76 bool is_fullscreen_ = false; |
| 77 |
| 78 // Indicates the remoting sink availablity. |
| 79 bool is_sink_available_ = false; |
| 80 |
| 81 // Indicates if remoting is started. |
| 82 bool is_remoting_ = false; |
| 83 |
| 84 // Indicates whether audio or video is encrypted. |
| 85 bool is_encrypted_ = false; |
| 86 |
| 87 // Current audio/video config. |
| 88 VideoDecoderConfig video_decoder_config_; |
| 89 AudioDecoderConfig audio_decoder_config_; |
| 90 bool has_audio_ = false; |
| 91 bool has_video_ = false; |
| 92 |
| 93 // The callback to switch the media renderer. |
| 94 SwitchRendererCallback switch_renderer_cb_; |
| 95 |
| 96 mojo::Binding<mojom::RemotingSource> binding_; |
| 97 mojom::RemoterPtr remoter_; |
| 98 |
| 99 // TODO(xjz): Add a media thread task runner for the received RPC messages for |
| 100 // remoting media renderer in the up-coming change. |
| 101 const scoped_refptr<base::SingleThreadTaskRunner> task_runner_; |
| 102 |
| 103 base::WeakPtrFactory<RemotingController> weak_factory_; |
| 104 |
| 105 DISALLOW_COPY_AND_ASSIGN(RemotingController); |
| 106 }; |
| 107 |
| 108 } // namespace media |
| 109 |
| 110 #endif // MEDIA_REMOTING_REMOTING_CONTROLLER_H_ |
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