This file is indexed.

/usr/include/thunderbird/mozilla/dom/SpeechRecognition.h is in thunderbird-dev 1:52.8.0-1~deb8u1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_dom_SpeechRecognition_h
#define mozilla_dom_SpeechRecognition_h

#include "mozilla/Attributes.h"
#include "mozilla/DOMEventTargetHelper.h"
#include "nsCOMPtr.h"
#include "nsString.h"
#include "nsWrapperCache.h"
#include "nsTArray.h"
#include "js/TypeDecls.h"

#include "nsIDOMNavigatorUserMedia.h"
#include "nsITimer.h"
#include "MediaEngine.h"
#include "MediaStreamGraph.h"
#include "AudioSegment.h"
#include "mozilla/WeakPtr.h"

#include "SpeechGrammarList.h"
#include "SpeechRecognitionResultList.h"
#include "SpeechStreamListener.h"
#include "nsISpeechRecognitionService.h"
#include "endpointer.h"

#include "mozilla/dom/SpeechRecognitionError.h"

namespace mozilla {

namespace dom {

#define SPEECH_RECOGNITION_TEST_EVENT_REQUEST_TOPIC "SpeechRecognitionTest:RequestEvent"
#define SPEECH_RECOGNITION_TEST_END_TOPIC "SpeechRecognitionTest:End"

class GlobalObject;
class SpeechEvent;

LogModule* GetSpeechRecognitionLog();
#define SR_LOG(...) MOZ_LOG(GetSpeechRecognitionLog(), mozilla::LogLevel::Debug, (__VA_ARGS__))

class SpeechRecognition final : public DOMEventTargetHelper,
                                public nsIObserver,
                                public SupportsWeakPtr<SpeechRecognition>
{
public:
  MOZ_DECLARE_WEAKREFERENCE_TYPENAME(SpeechRecognition)
  explicit SpeechRecognition(nsPIDOMWindowInner* aOwnerWindow);

  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SpeechRecognition, DOMEventTargetHelper)

  NS_DECL_NSIOBSERVER

  nsISupports* GetParentObject() const;

  JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;

  static bool IsAuthorized(JSContext* aCx, JSObject* aGlobal);

  static already_AddRefed<SpeechRecognition>
  Constructor(const GlobalObject& aGlobal, ErrorResult& aRv);

  already_AddRefed<SpeechGrammarList> Grammars() const;

  void SetGrammars(mozilla::dom::SpeechGrammarList& aArg);

  void GetLang(nsString& aRetVal) const;

  void SetLang(const nsAString& aArg);

  bool GetContinuous(ErrorResult& aRv) const;

  void SetContinuous(bool aArg, ErrorResult& aRv);

  bool InterimResults() const;

  void SetInterimResults(bool aArg);

  uint32_t MaxAlternatives() const;

  void SetMaxAlternatives(uint32_t aArg);

  void GetServiceURI(nsString& aRetVal, ErrorResult& aRv) const;

  void SetServiceURI(const nsAString& aArg, ErrorResult& aRv);

  void Start(const Optional<NonNull<DOMMediaStream>>& aStream, ErrorResult& aRv);

  void Stop();

  void Abort();

  IMPL_EVENT_HANDLER(audiostart)
  IMPL_EVENT_HANDLER(soundstart)
  IMPL_EVENT_HANDLER(speechstart)
  IMPL_EVENT_HANDLER(speechend)
  IMPL_EVENT_HANDLER(soundend)
  IMPL_EVENT_HANDLER(audioend)
  IMPL_EVENT_HANDLER(result)
  IMPL_EVENT_HANDLER(nomatch)
  IMPL_EVENT_HANDLER(error)
  IMPL_EVENT_HANDLER(start)
  IMPL_EVENT_HANDLER(end)

  enum EventType {
    EVENT_START,
    EVENT_STOP,
    EVENT_ABORT,
    EVENT_AUDIO_DATA,
    EVENT_AUDIO_ERROR,
    EVENT_RECOGNITIONSERVICE_INTERMEDIATE_RESULT,
    EVENT_RECOGNITIONSERVICE_FINAL_RESULT,
    EVENT_RECOGNITIONSERVICE_ERROR,
    EVENT_COUNT
  };

  void DispatchError(EventType aErrorType, SpeechRecognitionErrorCode aErrorCode, const nsAString& aMessage);
  uint32_t FillSamplesBuffer(const int16_t* aSamples, uint32_t aSampleCount);
  uint32_t SplitSamplesBuffer(const int16_t* aSamplesBuffer, uint32_t aSampleCount, nsTArray<RefPtr<SharedBuffer>>& aResult);
  AudioSegment* CreateAudioSegment(nsTArray<RefPtr<SharedBuffer>>& aChunks);
  void FeedAudioData(already_AddRefed<SharedBuffer> aSamples, uint32_t aDuration, MediaStreamListener* aProvider, TrackRate aTrackRate);

  friend class SpeechEvent;
private:
  virtual ~SpeechRecognition() {};

  enum FSMState {
    STATE_IDLE,
    STATE_STARTING,
    STATE_ESTIMATING,
    STATE_WAITING_FOR_SPEECH,
    STATE_RECOGNIZING,
    STATE_WAITING_FOR_RESULT,
    STATE_COUNT
  };

  void SetState(FSMState state);
  bool StateBetween(FSMState begin, FSMState end);

  bool SetRecognitionService(ErrorResult& aRv);
  bool ValidateAndSetGrammarList(ErrorResult& aRv);

  class GetUserMediaSuccessCallback : public nsIDOMGetUserMediaSuccessCallback
  {
  public:
    NS_DECL_ISUPPORTS
    NS_DECL_NSIDOMGETUSERMEDIASUCCESSCALLBACK

    explicit GetUserMediaSuccessCallback(SpeechRecognition* aRecognition)
      : mRecognition(aRecognition)
    {}

  private:
    virtual ~GetUserMediaSuccessCallback() {}

    RefPtr<SpeechRecognition> mRecognition;
  };

  class GetUserMediaErrorCallback : public nsIDOMGetUserMediaErrorCallback
  {
  public:
    NS_DECL_ISUPPORTS
    NS_DECL_NSIDOMGETUSERMEDIAERRORCALLBACK

    explicit GetUserMediaErrorCallback(SpeechRecognition* aRecognition)
      : mRecognition(aRecognition)
    {}

  private:
    virtual ~GetUserMediaErrorCallback() {}

    RefPtr<SpeechRecognition> mRecognition;
  };

  NS_IMETHOD StartRecording(DOMMediaStream* aDOMStream);
  NS_IMETHOD StopRecording();

  uint32_t ProcessAudioSegment(AudioSegment* aSegment, TrackRate aTrackRate);
  void NotifyError(SpeechEvent* aEvent);

  void ProcessEvent(SpeechEvent* aEvent);
  void Transition(SpeechEvent* aEvent);

  void Reset();
  void ResetAndEnd();
  void WaitForAudioData(SpeechEvent* aEvent);
  void StartedAudioCapture(SpeechEvent* aEvent);
  void StopRecordingAndRecognize(SpeechEvent* aEvent);
  void WaitForEstimation(SpeechEvent* aEvent);
  void DetectSpeech(SpeechEvent* aEvent);
  void WaitForSpeechEnd(SpeechEvent* aEvent);
  void NotifyFinalResult(SpeechEvent* aEvent);
  void DoNothing(SpeechEvent* aEvent);
  void AbortSilently(SpeechEvent* aEvent);
  void AbortError(SpeechEvent* aEvent);

  RefPtr<DOMMediaStream> mDOMStream;
  RefPtr<SpeechStreamListener> mSpeechListener;
  nsCOMPtr<nsISpeechRecognitionService> mRecognitionService;

  FSMState mCurrentState;

  Endpointer mEndpointer;
  uint32_t mEstimationSamples;

  uint32_t mAudioSamplesPerChunk;

  // buffer holds one chunk of mAudioSamplesPerChunk
  // samples before feeding it to mEndpointer
  RefPtr<SharedBuffer> mAudioSamplesBuffer;
  uint32_t mBufferedSamples;

  nsCOMPtr<nsITimer> mSpeechDetectionTimer;
  bool mAborted;

  nsString mLang;

  RefPtr<SpeechGrammarList> mSpeechGrammarList;

  // WebSpeechAPI (http://bit.ly/1gIl7DC) states:
  //
  // 1. Default value MUST be false
  // 2. If true, interim results SHOULD be returned
  // 3. If false, interim results MUST NOT be returned
  //
  // Pocketsphinx does not return interm results; so, defaulting
  // mInterimResults to false, then ignoring its subsequent value
  // is a conforming implementation.
  bool mInterimResults;

  // WebSpeechAPI (http://bit.ly/1JAiqeo) states:
  //
  // 1. Default value is 1
  // 2. Subsequent value is the "maximum number of SpeechRecognitionAlternatives per result"
  //
  // Pocketsphinx can only return at maximum a single SpeechRecognitionAlternative
  // per SpeechRecognitionResult. So defaulting mMaxAlternatives to 1, for all non
  // zero values ignoring mMaxAlternatives while for a 0 value returning no
  // SpeechRecognitionAlternative per result is a conforming implementation.
  uint32_t mMaxAlternatives;

  void ProcessTestEventRequest(nsISupports* aSubject, const nsAString& aEventName);

  const char* GetName(FSMState aId);
  const char* GetName(SpeechEvent* aId);
};

class SpeechEvent : public Runnable
{
public:
  SpeechEvent(SpeechRecognition* aRecognition, SpeechRecognition::EventType aType)
  : mAudioSegment(0)
  , mRecognitionResultList(nullptr)
  , mError(nullptr)
  , mRecognition(aRecognition)
  , mType(aType)
  , mTrackRate(0)
  {
  }

  ~SpeechEvent();

  NS_IMETHOD Run() override;
  AudioSegment* mAudioSegment;
  RefPtr<SpeechRecognitionResultList> mRecognitionResultList; // TODO: make this a session being passed which also has index and stuff
  RefPtr<SpeechRecognitionError> mError;

  friend class SpeechRecognition;
private:
  SpeechRecognition* mRecognition;

  // for AUDIO_DATA events, keep a reference to the provider
  // of the data (i.e., the SpeechStreamListener) to ensure it
  // is kept alive (and keeps SpeechRecognition alive) until this
  // event gets processed.
  RefPtr<MediaStreamListener> mProvider;
  SpeechRecognition::EventType mType;
  TrackRate mTrackRate;
};

} // namespace dom

inline nsISupports*
ToSupports(dom::SpeechRecognition* aRec)
{
  return ToSupports(static_cast<DOMEventTargetHelper*>(aRec));
}

} // namespace mozilla

#endif