components/copresence/mediums/audio/audio_recorder.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_COPRESENCE_MEDIUMS_AUDIO_AUDIO_RECORDER_H_
   6 #define COMPONENTS_COPRESENCE_MEDIUMS_AUDIO_AUDIO_RECORDER_H_
   7
   8 #include <string>
   9
  10 #include "base/gtest_prod_util.h"
  11 #include "base/macros.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "media/audio/audio_io.h"
  14 #include "media/audio/audio_parameters.h"
  15 #include "media/base/audio_converter.h"
  16
  17 namespace copresence {
  18
  19 // The AudioRecorder class will record audio until told to stop.
  20 class AudioRecorder {
  21  public:
  22   using RecordedSamplesCallback = base::Callback<void(const std::string&)>;
  23
  24   // Initializes the object. Do not use this object before calling this method.
  25   virtual void Initialize(const RecordedSamplesCallback& decode_callback) = 0;
  26
  27   // If we are already recording, this function will do nothing.
  28   virtual void Record() = 0;
  29   // If we are already stopped, this function will do nothing.
  30   virtual void Stop() = 0;
  31
  32   // Cleans up and deletes this object. Do not use object after this call.
  33   virtual void Finalize() = 0;
  34
  35  protected:
  36   virtual ~AudioRecorder() {}
  37 };
  38
  39 }  // namespace copresence
  40
  41 #endif  // COMPONENTS_COPRESENCE_MEDIUMS_AUDIO_AUDIO_RECORDER_H_