Index: media/base/audio_renderer_mixer_pool.h |
diff --git a/media/base/audio_renderer_mixer_pool.h b/media/base/audio_renderer_mixer_pool.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..e6ee9f006ed6b2f1f1bf8d5d99195a198c56a863 |
--- /dev/null |
+++ b/media/base/audio_renderer_mixer_pool.h |
@@ -0,0 +1,56 @@ |
+// Copyright 2016 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. |
+ |
+#ifndef MEDIA_BASE_AUDIO_RENDERER_MIXER_POOL_H_ |
+#define MEDIA_BASE_AUDIO_RENDERER_MIXER_POOL_H_ |
+ |
+#include <string> |
+ |
+#include "media/base/output_device_info.h" |
+ |
+namespace url { |
+class Origin; |
+} |
+ |
+namespace media { |
+class AudioParameters; |
+class AudioRendererMixer; |
+ |
+// Provides AudioRendererMixer instances for shared usage. |
+// Thread safe. |
+class MEDIA_EXPORT AudioRendererMixerPool { |
+ public: |
+ AudioRendererMixerPool() {} |
+ virtual ~AudioRendererMixerPool() {} |
+ |
+ // Obtains a pointer to mixer instance based on AudioParameters. The pointer |
+ // is guaranteed to be valid (at least) until it's rereleased by a call to |
+ // ReturnMixer(). |
+ virtual AudioRendererMixer* GetMixer(int owner_id, |
+ const AudioParameters& params, |
+ const std::string& device_id, |
+ const url::Origin& security_origin, |
+ OutputDeviceStatus* device_status) = 0; |
+ |
+ // Returns mixer back to the pool, must be called when the mixer is not needed |
+ // any more to avoid memory leakage. |
+ virtual void ReturnMixer(int owner_id, |
+ const AudioParameters& params, |
+ const std::string& device_id, |
+ const url::Origin& security_origin) = 0; |
+ |
+ // Returns output device information |
+ virtual OutputDeviceInfo GetOutputDeviceInfo( |
+ int owner_id, |
+ int session_id, |
+ const std::string& device_id, |
+ const url::Origin& security_origin) = 0; |
+ |
+ private: |
+ DISALLOW_COPY_AND_ASSIGN(AudioRendererMixerPool); |
+}; |
+ |
+} // namespace media |
+ |
+#endif // MEDIA_BASE_AUDIO_RENDERER_MIXER_POOL_H_ |