| // Copyright 2014 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_PUBLIC_BROWSER_SPEECH_RECOGNITION_SESSION_PREAMBLE_H_ |
| #define CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNITION_SESSION_PREAMBLE_H_ |
| |
| #include <vector> |
| |
| #include "base/memory/ref_counted.h" |
| #include "content/common/content_export.h" |
| |
| namespace content { |
| |
| // The preamble is the few seconds of audio before the speech recognition |
| // starts. This is used to contain trigger audio used to start a voice |
| // query, such as the 'Ok Google' hotword. |
| struct CONTENT_EXPORT SpeechRecognitionSessionPreamble |
| : public base::RefCounted<SpeechRecognitionSessionPreamble> { |
| SpeechRecognitionSessionPreamble(); |
| |
| // Sampling rate (hz) for the preamble data. i.e. 44100, 32000, etc |
| int sample_rate; |
| |
| // Bytes per sample. |
| int sample_depth; |
| |
| // Audio data, in little-endian samples. |
| std::vector<char> sample_data; |
| |
| private: |
| friend class base::RefCounted<SpeechRecognitionSessionPreamble>; |
| ~SpeechRecognitionSessionPreamble(); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_PUBLIC_BROWSER_SPEECH_RECOGNITION_SESSION_PREAMBLE_H_ |