Encrypted Media: Support Audio Decrypt-Only.

media/base/audio_renderer.h

 // 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.
 
 #ifndef MEDIA_BASE_AUDIO_RENDERER_H_
 #define MEDIA_BASE_AUDIO_RENDERER_H_
 
 #include <list>
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/time.h"
+#include "media/base/decryptor.h"
 #include "media/base/media_export.h"
 #include "media/base/pipeline_status.h"
 
 namespace media {
 
 class AudioDecoder;
 class DemuxerStream;
 
 class MEDIA_EXPORT AudioRenderer
     : public base::RefCountedThreadSafe<AudioRenderer> {
@@ skipping 16 matching lines @@
   //
   // |time_cb| is executed whenever time has advanced by way of audio rendering.
   //
   // |ended_cb| is executed when audio rendering has reached the end of stream.
   //
   // |disabled_cb| is executed when audio rendering has been disabled due to
   // external factors (i.e., device was removed). |time_cb| will no longer be
   // executed.
   //
   // |error_cb| is executed if an error was encountered.
-  virtual void Initialize(const scoped_refptr<DemuxerStream>& stream,
-                          const AudioDecoderList& decoders,
-                          const PipelineStatusCB& init_cb,
-                          const StatisticsCB& statistics_cb,
-                          const base::Closure& underflow_cb,
-                          const TimeCB& time_cb,
-                          const base::Closure& ended_cb,
-                          const base::Closure& disabled_cb,
-                          const PipelineStatusCB& error_cb) = 0;
+  virtual void Initialize(
+      const scoped_refptr<DemuxerStream>& stream,
+      const AudioDecoderList& decoders,
+      const RequestDecryptorNotificationCB& request_decryptor_notification_cb,
+      const PipelineStatusCB& init_cb,
+      const StatisticsCB& statistics_cb,
+      const base::Closure& underflow_cb,
+      const TimeCB& time_cb,
+      const base::Closure& ended_cb,
+      const base::Closure& disabled_cb,
+      const PipelineStatusCB& error_cb) = 0;
 
   // Start audio decoding and rendering at the current playback rate, executing
   // |callback| when playback is underway.
   virtual void Play(const base::Closure& callback) = 0;
 
   // Temporarily suspend decoding and rendering audio, executing |callback| when
   // playback has been suspended.
   virtual void Pause(const base::Closure& callback) = 0;
 
   // Discard any audio data, executing |callback| when completed.
@@ skipping 28 matching lines @@
   AudioRenderer();
   virtual ~AudioRenderer();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AudioRenderer);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_AUDIO_RENDERER_H_