Index: content/public/renderer/media_stream_audio_renderer.h |
diff --git a/content/public/renderer/media_stream_audio_renderer.h b/content/public/renderer/media_stream_audio_renderer.h |
index 5a5d68d3d6234171c33df2e2462e8d430e9c0402..1691abe72523f6fb0c04c26e876be3604089e629 100644 |
--- a/content/public/renderer/media_stream_audio_renderer.h |
+++ b/content/public/renderer/media_stream_audio_renderer.h |
@@ -41,6 +41,22 @@ class MediaStreamAudioRenderer |
// supported. |
virtual media::OutputDevice* GetOutputDevice() = 0; |
+ // Attempts to switch the audio output device. |
+ // Once the attempt is finished, |callback| is invoked with the |
+ // result of the operation passed as a parameter. The result is a value from |
+ // the media::OutputDeviceStatus enum. |
+ // There is no guarantee about the thread where |callback| will |
+ // be invoked, so users are advised to use media::BindToCurrentLoop() to |
+ // ensure that |callback| runs on the correct thread. |
+ // Note also that copy constructors and destructors for arguments bound to |
+ // |callback| may run on arbitrary threads as |callback| is moved across |
+ // threads. It is advisable to bind arguments such that they are released by |
+ // |callback| when it runs in order to avoid surprises. |
+ virtual void SwitchOutputDevice( |
+ const std::string& device_id, |
+ const url::Origin& security_origin, |
+ const media::OutputDeviceStatusCB& callback) = 0; |
+ |
// Time stamp that reflects the current render time. Should not be updated |
// when paused. |
virtual base::TimeDelta GetCurrentRenderTime() const = 0; |