Implement MojoAudioDecoderService

media/mojo/services/mojo_audio_decoder_service.h

 // 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_MOJO_SERVICES_MOJO_AUDIO_DECODER_SERVICE_H_
 #define MEDIA_MOJO_SERVICES_MOJO_AUDIO_DECODER_SERVICE_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "media/base/audio_decoder.h"
@@ skipping 15 matching lines @@
                   interfaces::AudioDecoderConfigPtr config,
                   int32_t cdm_id,
                   const InitializeCallback& callback) final;
 
   void Decode(interfaces::DecoderBufferPtr buffer,
               const DecodeCallback& callback) final;
 
   void Reset(const ResetCallback& callback) final;
 
  private:
+  // Called by |decoder_| upon finishing initialization.
+  void OnInitialized(bool success);
+
+  // Called by |decoder_| when DecoderBuffer is accepted or rejected.
+  void OnDecodeStatus(media::AudioDecoder::Status status);
+
+  // Called by |decoder_| when reset sequence is finished.
+  void OnResetDone();
+
+  // Called by |decoder_| for each decoded buffer.
+  void OnAudioBufferReady(const scoped_refptr<AudioBuffer>& audio_buffer);
+
+  // A helper method to read and deserialize DecoderBuffer from data pipe.
+  scoped_refptr<DecoderBuffer> ReadDecoderBuffer(
+      interfaces::DecoderBufferPtr buffer);
+
   // A binding represents the association between the service and the
   // communication channel, i.e. the pipe.
   mojo::StrongBinding<interfaces::AudioDecoder> binding_;
 
   // The AudioDecoder that does actual decoding work.
   scoped_ptr<media::AudioDecoder> decoder_;
 
   // The destination for the decoded buffers.
   interfaces::AudioDecoderClientPtr client_;
 
+  // These callbacks sends info to the Mojo client.

[xhwang, 2016/03/18 23:01:13]

The |client_| has a special meaning. These callbacks actually are not sent
through the |client_| but are just callbacks of mojo calls.

[Tima Vaisburd, 2016/03/19 03:09:05]

These variables got removed, the corresponding callbacks are now bound into
media::AudioDecoder callbacks.

+  InitializeCallback initialize_callback_;
+  DecodeCallback decode_callback_;
+  ResetCallback reset_callback_;
+
   DISALLOW_COPY_AND_ASSIGN(MojoAudioDecoderService);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_SERVICES_MOJO_AUDIO_DECODER_SERVICE_H_