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Side by Side Diff: content/browser/speech/endpointer/energy_endpointer.h

Issue 9568002: Renamed speech input implementation from to speech_recognition_*. The namespace has been renamed fr… (Closed) Base URL: http://git.chromium.org/chromium/src.git@master
Patch Set: Rebased from master. Created 8 years, 9 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 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 // The EnergyEndpointer class finds likely speech onset and offset points. 5 // The EnergyEndpointer class finds likely speech onset and offset points.
6 // 6 //
7 // The implementation described here is about the simplest possible. 7 // The implementation described here is about the simplest possible.
8 // It is based on timings of threshold crossings for overall signal 8 // It is based on timings of threshold crossings for overall signal
9 // RMS. It is suitable for light weight applications. 9 // RMS. It is suitable for light weight applications.
10 // 10 //
11 // As written, the basic idea is that one specifies intervals that 11 // As written, the basic idea is that one specifies intervals that
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37 #ifndef CONTENT_BROWSER_SPEECH_ENDPOINTER_ENERGY_ENDPOINTER_H_ 37 #ifndef CONTENT_BROWSER_SPEECH_ENDPOINTER_ENERGY_ENDPOINTER_H_
38 #define CONTENT_BROWSER_SPEECH_ENDPOINTER_ENERGY_ENDPOINTER_H_ 38 #define CONTENT_BROWSER_SPEECH_ENDPOINTER_ENERGY_ENDPOINTER_H_
39 39
40 #include <vector> 40 #include <vector>
41 41
42 #include "base/basictypes.h" 42 #include "base/basictypes.h"
43 #include "base/memory/scoped_ptr.h" 43 #include "base/memory/scoped_ptr.h"
44 #include "content/browser/speech/endpointer/energy_endpointer_params.h" 44 #include "content/browser/speech/endpointer/energy_endpointer_params.h"
45 #include "content/common/content_export.h" 45 #include "content/common/content_export.h"
46 46
47 namespace speech_input { 47 namespace speech {
48 48
49 // Endpointer status codes 49 // Endpointer status codes
50 enum EpStatus { 50 enum EpStatus {
51 EP_PRE_SPEECH = 10, 51 EP_PRE_SPEECH = 10,
52 EP_POSSIBLE_ONSET, 52 EP_POSSIBLE_ONSET,
53 EP_SPEECH_PRESENT, 53 EP_SPEECH_PRESENT,
54 EP_POSSIBLE_OFFSET, 54 EP_POSSIBLE_OFFSET,
55 EP_POST_SPEECH, 55 EP_POST_SPEECH,
56 }; 56 };
57 57
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143 // End lag corresponds to the lowest fundamental frequency. 143 // End lag corresponds to the lowest fundamental frequency.
144 int end_lag_; 144 int end_lag_;
145 145
146 // Time when mode switched from environment estimation to user input. This 146 // Time when mode switched from environment estimation to user input. This
147 // is used to time forced rejection of audio feedback contamination. 147 // is used to time forced rejection of audio feedback contamination.
148 int64 user_input_start_time_us_; 148 int64 user_input_start_time_us_;
149 149
150 DISALLOW_COPY_AND_ASSIGN(EnergyEndpointer); 150 DISALLOW_COPY_AND_ASSIGN(EnergyEndpointer);
151 }; 151 };
152 152
153 } // namespace speech_input 153 } // namespace speech
154 154
155 #endif // CONTENT_BROWSER_SPEECH_ENDPOINTER_ENERGY_ENDPOINTER_H_ 155 #endif // CONTENT_BROWSER_SPEECH_ENDPOINTER_ENERGY_ENDPOINTER_H_
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