Mojofication of the Chrome Audio Rendering Prototype

content/browser/renderer_host/media/audio_renderer_host.h

Index: content/browser/renderer_host/media/audio_renderer_host.h
diff --git a/content/browser/renderer_host/media/audio_renderer_host.h b/content/browser/renderer_host/media/audio_renderer_host.h
index e549df20cc94f0778b29efcfc7bc0f93e3b23677..a2f2696f5c385c1a25208669a8ca478a1956d86c 100644
--- a/content/browser/renderer_host/media/audio_renderer_host.h
+++ b/content/browser/renderer_host/media/audio_renderer_host.h
@@ -55,6 +55,7 @@
 #include "base/sequenced_task_runner_helpers.h"
 #include "content/browser/renderer_host/media/audio_output_device_enumerator.h"
 #include "content/common/content_export.h"
+#include "content/common/media/audio_output.mojom.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
@@ -106,6 +107,25 @@ class CONTENT_EXPORT AudioRendererHost : public BrowserMessageFilter {
   // |render_frame_id| are actively playing. Can be called from any thread.
   bool RenderFrameHasActiveAudio(int render_frame_id) const;
 
+  // Creates an audio output stream with the specified format.
+  // Upon success/failure, the peer is notified via the NotifyStreamCreated
+  // message.
+  void OnCreateStream(int stream_id,
+                      int render_frame_id,
+                      const media::AudioParameters& params);
+
+  // Creates an audio output stream with the specified format.
+  // Upon success/failure, the peer is notified via the NotifyStreamCreated
+  // message.
+  void OnCreateStreamMojo(int stream_id,
+                          int render_frame_id,
+                          const media::AudioParameters& params,
+                          AudioOutputStreamPtr stream,
+                          const AudioOutput::CreateStreamCallback& callback);
+
+  // Close the audio stream referenced by |stream_id|.
+  void OnCloseStream(int stream_id);
+
  private:
   friend class AudioRendererHostTest;
   friend class BrowserThread;
@@ -149,12 +169,6 @@ class CONTENT_EXPORT AudioRendererHost : public BrowserMessageFilter {
                                     const std::string& device_id,
                                     const url::Origin& gurl_security_origin);
 
-  // Creates an audio output stream with the specified format.
-  // Upon success/failure, the peer is notified via the NotifyStreamCreated
-  // message.
-  void OnCreateStream(int stream_id,
-                      int render_frame_id,
-                      const media::AudioParameters& params);
 
   // Play the audio stream referenced by |stream_id|.
   void OnPlayStream(int stream_id);
@@ -162,9 +176,6 @@ class CONTENT_EXPORT AudioRendererHost : public BrowserMessageFilter {
   // Pause the audio stream referenced by |stream_id|.
   void OnPauseStream(int stream_id);
 
-  // Close the audio stream referenced by |stream_id|.
-  void OnCloseStream(int stream_id);
-
   // Set the volume of the audio stream referenced by |stream_id|.
   void OnSetVolume(int stream_id, double volume);
 
@@ -186,6 +197,15 @@ class CONTENT_EXPORT AudioRendererHost : public BrowserMessageFilter {
   void DoCreateStream(int stream_id,
                       int render_frame_id,
                       const media::AudioParameters& params,
+                      const std::string& device_unique_id,
+                      AudioOutputStreamPtr stream,
+                      const AudioOutput::CreateStreamCallback& callback);
+
+  // Start the actual creation of an audio stream, after the device
+  // authorization process is complete.
+  void DoCreateStream(int stream_id,
+                      int render_frame_id,
+                      const media::AudioParameters& params,
                       const std::string& device_unique_id);
 
   // Complete the process of creating an audio stream. This will set up the
@@ -193,6 +213,12 @@ class CONTENT_EXPORT AudioRendererHost : public BrowserMessageFilter {
   // NotifyStreamCreated message to the peer.
   void DoCompleteCreation(int stream_id);
 
+  // Complete the process of creating an audio stream. This will set up the
+  // shared memory or shared socket in low latency mode and send the
+  // NotifyStreamCreated message to the peer.
+  void DoCompleteCreationMojo(
+      int stream_id,
+      const AudioOutput::CreateStreamCallback& callback);
   // Send playing/paused status to the renderer.
   void DoNotifyStreamStateChanged(int stream_id, bool is_playing);
 
@@ -267,6 +293,8 @@ class CONTENT_EXPORT AudioRendererHost : public BrowserMessageFilter {
   // host. Reported as UMA stat at shutdown.
   size_t max_simultaneous_streams_;
 
+  AudioOutputStreamPtr stream_ptr_;
+
   DISALLOW_COPY_AND_ASSIGN(AudioRendererHost);
 };