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Side by Side Diff: content/browser/speech/speech_recognizer_impl.cc

Issue 10377082: SpeechInputExtensionManager now interface with SpeechRecognitionManagerDelegate (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Rebased Created 8 years, 7 months ago
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1 // Copyright (c) 2012 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 #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.h" 9 #include "base/time.h"
10 #include "content/browser/browser_main_loop.h" 10 #include "content/browser/browser_main_loop.h"
11 #include "content/browser/speech/audio_buffer.h" 11 #include "content/browser/speech/audio_buffer.h"
12 #include "content/browser/speech/google_one_shot_remote_engine.h" 12 #include "content/browser/speech/google_one_shot_remote_engine.h"
13 #include "content/public/browser/browser_thread.h" 13 #include "content/public/browser/browser_thread.h"
14 #include "content/public/browser/speech_recognition_event_listener.h" 14 #include "content/public/browser/speech_recognition_event_listener.h"
15 #include "content/public/browser/speech_recognizer.h"
16 #include "content/public/common/speech_recognition_error.h" 15 #include "content/public/common/speech_recognition_error.h"
17 #include "content/public/common/speech_recognition_result.h" 16 #include "content/public/common/speech_recognition_result.h"
18 #include "net/url_request/url_request_context_getter.h" 17 #include "net/url_request/url_request_context_getter.h"
19 18
20 using content::BrowserMainLoop; 19 using content::BrowserMainLoop;
21 using content::BrowserThread; 20 using content::BrowserThread;
22 using content::SpeechRecognitionError; 21 using content::SpeechRecognitionError;
23 using content::SpeechRecognitionEventListener; 22 using content::SpeechRecognitionEventListener;
24 using content::SpeechRecognitionResult; 23 using content::SpeechRecognitionResult;
25 using content::SpeechRecognizer;
26 using media::AudioInputController; 24 using media::AudioInputController;
27 using media::AudioManager; 25 using media::AudioManager;
28 using media::AudioParameters; 26 using media::AudioParameters;
29 27
30 namespace { 28 namespace {
31 29
32 // The following constants are related to the volume level indicator shown in 30 // The following constants are related to the volume level indicator shown in
33 // the UI for recorded audio. 31 // the UI for recorded audio.
34 // Multiplier used when new volume is greater than previous level. 32 // Multiplier used when new volume is greater than previous level.
35 const float kUpSmoothingFactor = 1.0f; 33 const float kUpSmoothingFactor = 1.0f;
(...skipping 23 matching lines...) Expand all
59 } 57 }
60 } 58 }
61 return false; 59 return false;
62 } 60 }
63 61
64 void KeepAudioControllerRefcountedForDtor(scoped_refptr<AudioInputController>) { 62 void KeepAudioControllerRefcountedForDtor(scoped_refptr<AudioInputController>) {
65 } 63 }
66 64
67 } // namespace 65 } // namespace
68 66
69 // TODO(primiano) Create(...) is transitional (until we fix speech input
70 // extensions) and should be removed soon. The manager should be the only one
71 // knowing the existence of SpeechRecognizer(Impl), thus the only one in charge
72 // of instantiating it.
73 SpeechRecognizer* SpeechRecognizer::Create(
74 SpeechRecognitionEventListener* listener,
75 int session_id,
76 const std::string& language,
77 const std::string& grammar,
78 net::URLRequestContextGetter* context_getter,
79 bool filter_profanities,
80 const std::string& hardware_info,
81 const std::string& origin_url) {
82 speech::GoogleOneShotRemoteEngineConfig remote_engine_config;
83 remote_engine_config.language = language;
84 remote_engine_config.grammar = grammar;
85 remote_engine_config.audio_sample_rate =
86 speech::SpeechRecognizerImpl::kAudioSampleRate;
87 remote_engine_config.audio_num_bits_per_sample =
88 speech::SpeechRecognizerImpl::kNumBitsPerAudioSample;
89 remote_engine_config.filter_profanities = filter_profanities;
90 remote_engine_config.hardware_info = hardware_info;
91 remote_engine_config.origin_url = origin_url;
92
93 // SpeechRecognizerImpl takes ownership of google_remote_engine.
94 speech::GoogleOneShotRemoteEngine* google_remote_engine =
95 new speech::GoogleOneShotRemoteEngine(context_getter);
96 google_remote_engine->SetConfig(remote_engine_config);
97
98 return new speech::SpeechRecognizerImpl(listener,
99 session_id,
100 google_remote_engine);
101 }
102
103 namespace speech { 67 namespace speech {
104 68
105 const int SpeechRecognizerImpl::kAudioSampleRate = 16000; 69 const int SpeechRecognizerImpl::kAudioSampleRate = 16000;
106 const ChannelLayout SpeechRecognizerImpl::kChannelLayout = CHANNEL_LAYOUT_MONO; 70 const ChannelLayout SpeechRecognizerImpl::kChannelLayout = CHANNEL_LAYOUT_MONO;
107 const int SpeechRecognizerImpl::kNumBitsPerAudioSample = 16; 71 const int SpeechRecognizerImpl::kNumBitsPerAudioSample = 16;
108 const int SpeechRecognizerImpl::kNoSpeechTimeoutMs = 8000; 72 const int SpeechRecognizerImpl::kNoSpeechTimeoutMs = 8000;
109 const int SpeechRecognizerImpl::kEndpointerEstimationTimeMs = 300; 73 const int SpeechRecognizerImpl::kEndpointerEstimationTimeMs = 300;
110 74
111 COMPILE_ASSERT(SpeechRecognizerImpl::kNumBitsPerAudioSample % 8 == 0, 75 COMPILE_ASSERT(SpeechRecognizerImpl::kNumBitsPerAudioSample % 8 == 0,
112 kNumBitsPerAudioSample_must_be_a_multiple_of_8); 76 kNumBitsPerAudioSample_must_be_a_multiple_of_8);
(...skipping 529 matching lines...) Expand 10 before | Expand all | Expand 10 after
642 : event(event_value), 606 : event(event_value),
643 audio_error_code(0), 607 audio_error_code(0),
644 audio_data(NULL), 608 audio_data(NULL),
645 engine_error(content::SPEECH_RECOGNITION_ERROR_NONE) { 609 engine_error(content::SPEECH_RECOGNITION_ERROR_NONE) {
646 } 610 }
647 611
648 SpeechRecognizerImpl::FSMEventArgs::~FSMEventArgs() { 612 SpeechRecognizerImpl::FSMEventArgs::~FSMEventArgs() {
649 } 613 }
650 614
651 } // namespace speech 615 } // namespace speech
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