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| 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "content/browser/speech/speech_recognizer_impl.h" | 5 #include "content/browser/speech/speech_recognizer_impl.h" |
| 6 | 6 |
| 7 #include "base/basictypes.h" | 7 #include "base/basictypes.h" |
| 8 #include "base/bind.h" | 8 #include "base/bind.h" |
| 9 #include "base/time/time.h" | 9 #include "base/time/time.h" |
| 10 #include "content/browser/browser_main_loop.h" | 10 #include "content/browser/browser_main_loop.h" |
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| 39 virtual ~OnDataConverter(); | 39 virtual ~OnDataConverter(); |
| 40 | 40 |
| 41 // Converts input audio |data| bus into an AudioChunk where the input format | 41 // Converts input audio |data| bus into an AudioChunk where the input format |
| 42 // is given by |input_parameters_| and the output format by | 42 // is given by |input_parameters_| and the output format by |
| 43 // |output_parameters_|. | 43 // |output_parameters_|. |
| 44 scoped_refptr<AudioChunk> Convert(const AudioBus* data); | 44 scoped_refptr<AudioChunk> Convert(const AudioBus* data); |
| 45 | 45 |
| 46 private: | 46 private: |
| 47 // media::AudioConverter::InputCallback implementation. | 47 // media::AudioConverter::InputCallback implementation. |
| 48 virtual double ProvideInput(AudioBus* dest, | 48 virtual double ProvideInput(AudioBus* dest, |
| 49 base::TimeDelta buffer_delay) OVERRIDE; | 49 base::TimeDelta buffer_delay) override; |
| 50 | 50 |
| 51 // Handles resampling, buffering, and channel mixing between input and output | 51 // Handles resampling, buffering, and channel mixing between input and output |
| 52 // parameters. | 52 // parameters. |
| 53 AudioConverter audio_converter_; | 53 AudioConverter audio_converter_; |
| 54 | 54 |
| 55 scoped_ptr<AudioBus> input_bus_; | 55 scoped_ptr<AudioBus> input_bus_; |
| 56 scoped_ptr<AudioBus> output_bus_; | 56 scoped_ptr<AudioBus> output_bus_; |
| 57 const AudioParameters input_parameters_; | 57 const AudioParameters input_parameters_; |
| 58 const AudioParameters output_parameters_; | 58 const AudioParameters output_parameters_; |
| 59 bool waiting_for_input_; | 59 bool waiting_for_input_; |
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| 815 SpeechRecognizerImpl::FSMEventArgs::FSMEventArgs(FSMEvent event_value) | 815 SpeechRecognizerImpl::FSMEventArgs::FSMEventArgs(FSMEvent event_value) |
| 816 : event(event_value), | 816 : event(event_value), |
| 817 audio_data(NULL), | 817 audio_data(NULL), |
| 818 engine_error(SPEECH_RECOGNITION_ERROR_NONE) { | 818 engine_error(SPEECH_RECOGNITION_ERROR_NONE) { |
| 819 } | 819 } |
| 820 | 820 |
| 821 SpeechRecognizerImpl::FSMEventArgs::~FSMEventArgs() { | 821 SpeechRecognizerImpl::FSMEventArgs::~FSMEventArgs() { |
| 822 } | 822 } |
| 823 | 823 |
| 824 } // namespace content | 824 } // namespace content |
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