Expose flash playback status and volume control to content renderer

content/renderer/pepper/pepper_platform_audio_output.cc

 // Copyright (c) 2012 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.
 
 #include "content/renderer/pepper/pepper_platform_audio_output.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 42 matching lines @@
 bool PepperPlatformAudioOutput::StopPlayback() {
   if (ipc_) {
     io_task_runner_->PostTask(
         FROM_HERE,
         base::Bind(&PepperPlatformAudioOutput::StopPlaybackOnIOThread, this));
     return true;
   }
   return false;
 }
 
+bool PepperPlatformAudioOutput::SetVolume(double volume) {
+  if (ipc_) {
+    io_task_runner_->PostTask(
+        FROM_HERE,
+        base::Bind(&PepperPlatformAudioOutput::SetVolumeOnIOThread,
+                   this, volume));
+    return true;
+  }
+  return false;
+}
+
 void PepperPlatformAudioOutput::ShutDown() {
   // Called on the main thread to stop all audio callbacks. We must only change
   // the client on the main thread, and the delegates from the I/O thread.
   client_ = NULL;
   io_task_runner_->PostTask(
       FROM_HERE,
       base::Bind(&PepperPlatformAudioOutput::ShutDownOnIOThread, this));
 }
 
 void PepperPlatformAudioOutput::OnStateChanged(
@@ skipping 76 matching lines @@
   if (ipc_)
     ipc_->CreateStream(this, params);
 }
 
 void PepperPlatformAudioOutput::StartPlaybackOnIOThread() {
   DCHECK(io_task_runner_->BelongsToCurrentThread());
   if (ipc_)
     ipc_->PlayStream();
 }
 
+void PepperPlatformAudioOutput::SetVolumeOnIOThread(double volume) {
+  DCHECK(io_task_runner_->BelongsToCurrentThread());
+  if (ipc_)
+    ipc_->SetVolume(volume);
+}
+
 void PepperPlatformAudioOutput::StopPlaybackOnIOThread() {
   DCHECK(io_task_runner_->BelongsToCurrentThread());
   if (ipc_)
     ipc_->PauseStream();
 }
 
 void PepperPlatformAudioOutput::ShutDownOnIOThread() {
   DCHECK(io_task_runner_->BelongsToCurrentThread());
 
   // Make sure we don't call shutdown more than once.
   if (!ipc_)
     return;
 
   ipc_->CloseStream();
   ipc_.reset();
 
   Release();  // Release for the delegate, balances out the reference taken in
               // PepperPlatformAudioOutput::Create.
 }
 
 }  // namespace content