Check buffer index in shared memory for input audio.

content/browser/renderer_host/media/audio_input_sync_writer.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 CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_SYNC_WRITER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_SYNC_WRITER_H_
 
 #include "base/memory/scoped_vector.h"
 #include "base/process/process.h"
 #include "base/sync_socket.h"
@@ skipping 17 matching lines @@
 // process.
 class AudioInputSyncWriter : public media::AudioInputController::SyncWriter {
  public:
   explicit AudioInputSyncWriter(base::SharedMemory* shared_memory,
                                 int shared_memory_segment_count,
                                 const media::AudioParameters& params);
 
   ~AudioInputSyncWriter() override;
 
   // media::AudioInputController::SyncWriter implementation.
-  void UpdateRecordedBytes(uint32 bytes) override;
   void Write(const media::AudioBus* data,
              double volume,
-             bool key_pressed) override;
+             bool key_pressed,
+             uint32 hardware_delay_bytes) override;
   void Close() override;
 
   bool Init();
   bool PrepareForeignSocket(base::ProcessHandle process_handle,
                             base::SyncSocket::TransitDescriptor* descriptor);
 
  private:
   base::SharedMemory* shared_memory_;
   uint32 shared_memory_segment_size_;
   uint32 shared_memory_segment_count_;
   uint32 current_segment_id_;
 
   // Socket for transmitting audio data.
   scoped_ptr<base::CancelableSyncSocket> socket_;
 
   // Socket to be used by the renderer. The reference is released after
   // PrepareForeignSocketHandle() is called and ran successfully.
   scoped_ptr<base::CancelableSyncSocket> foreign_socket_;
 
   // The time of the creation of this object.
   base::Time creation_time_;
 
   // The time of the last Write call.
   base::Time last_write_time_;
 
   // Size in bytes of each audio bus.
   const int audio_bus_memory_size_;
 
+  // Increasing ID used for audio buffers correct sequence at read side.
+  uint32_t next_buffer_id_;
+
   // Vector of audio buses allocated during construction and deleted in the
   // destructor.
   ScopedVector<media::AudioBus> audio_buses_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(AudioInputSyncWriter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_SYNC_WRITER_H_