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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_BASE_AUDIO_RENDERER_MIXER_POOL_H_ |
| 6 #define MEDIA_BASE_AUDIO_RENDERER_MIXER_POOL_H_ |
| 7 |
| 8 #include <string> |
| 9 |
| 10 #include "media/base/output_device_info.h" |
| 11 |
| 12 namespace url { |
| 13 class Origin; |
| 14 } |
| 15 |
| 16 namespace media { |
| 17 class AudioParameters; |
| 18 class AudioRendererMixer; |
| 19 |
| 20 // Provides AudioRendererMixer instances for shared usage. |
| 21 // Thread safe. |
| 22 class MEDIA_EXPORT AudioRendererMixerPool { |
| 23 public: |
| 24 AudioRendererMixerPool() {} |
| 25 virtual ~AudioRendererMixerPool() {} |
| 26 |
| 27 // Obtains a pointer to mixer instance based on AudioParameters. The pointer |
| 28 // is guaranteed to be valid (at least) until it's rereleased by a call to |
| 29 // ReturnMixer(). |
| 30 virtual AudioRendererMixer* GetMixer(int owner_id, |
| 31 const AudioParameters& params, |
| 32 const std::string& device_id, |
| 33 const url::Origin& security_origin, |
| 34 OutputDeviceStatus* device_status) = 0; |
| 35 |
| 36 // Returns mixer back to the pool, must be called when the mixer is not needed |
| 37 // any more to avoid memory leakage. |
| 38 virtual void ReturnMixer(int owner_id, |
| 39 const AudioParameters& params, |
| 40 const std::string& device_id, |
| 41 const url::Origin& security_origin) = 0; |
| 42 |
| 43 // Returns output device information |
| 44 virtual OutputDeviceInfo GetOutputDeviceInfo( |
| 45 int owner_id, |
| 46 int session_id, |
| 47 const std::string& device_id, |
| 48 const url::Origin& security_origin) = 0; |
| 49 |
| 50 private: |
| 51 DISALLOW_COPY_AND_ASSIGN(AudioRendererMixerPool); |
| 52 }; |
| 53 |
| 54 } // namespace media |
| 55 |
| 56 #endif // MEDIA_BASE_AUDIO_RENDERER_MIXER_POOL_H_ |
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