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1 /* | 1 /* |
2 * libjingle | 2 * libjingle |
3 * Copyright 2012 Google Inc. | 3 * Copyright 2012 Google Inc. |
4 * | 4 * |
5 * Redistribution and use in source and binary forms, with or without | 5 * Redistribution and use in source and binary forms, with or without |
6 * modification, are permitted provided that the following conditions are met: | 6 * modification, are permitted provided that the following conditions are met: |
7 * | 7 * |
8 * 1. Redistributions of source code must retain the above copyright notice, | 8 * 1. Redistributions of source code must retain the above copyright notice, |
9 * this list of conditions and the following disclaimer. | 9 * this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright notice, | 10 * 2. Redistributions in binary form must reproduce the above copyright notice, |
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46 #include "webrtc/modules/audio_device/include/audio_device.h" | 46 #include "webrtc/modules/audio_device/include/audio_device.h" |
47 | 47 |
48 namespace rtc { | 48 namespace rtc { |
49 class Thread; | 49 class Thread; |
50 } // namespace rtc | 50 } // namespace rtc |
51 | 51 |
52 class FakeAudioCaptureModule | 52 class FakeAudioCaptureModule |
53 : public webrtc::AudioDeviceModule, | 53 : public webrtc::AudioDeviceModule, |
54 public rtc::MessageHandler { | 54 public rtc::MessageHandler { |
55 public: | 55 public: |
56 typedef uint16 Sample; | 56 typedef uint16_t Sample; |
57 | 57 |
58 // The value for the following constants have been derived by running VoE | 58 // The value for the following constants have been derived by running VoE |
59 // using a real ADM. The constants correspond to 10ms of mono audio at 44kHz. | 59 // using a real ADM. The constants correspond to 10ms of mono audio at 44kHz. |
60 static const size_t kNumberSamples = 440; | 60 static const size_t kNumberSamples = 440; |
61 static const size_t kNumberBytesPerSample = sizeof(Sample); | 61 static const size_t kNumberBytesPerSample = sizeof(Sample); |
62 | 62 |
63 // Creates a FakeAudioCaptureModule or returns NULL on failure. | 63 // Creates a FakeAudioCaptureModule or returns NULL on failure. |
64 static rtc::scoped_refptr<FakeAudioCaptureModule> Create(); | 64 static rtc::scoped_refptr<FakeAudioCaptureModule> Create(); |
65 | 65 |
66 // Returns the number of frames that have been successfully pulled by the | 66 // Returns the number of frames that have been successfully pulled by the |
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231 // Periodcally called function that ensures that frames are pulled and pushed | 231 // Periodcally called function that ensures that frames are pulled and pushed |
232 // periodically if enabled/started. | 232 // periodically if enabled/started. |
233 void ProcessFrameP(); | 233 void ProcessFrameP(); |
234 // Pulls frames from the registered webrtc::AudioTransport. | 234 // Pulls frames from the registered webrtc::AudioTransport. |
235 void ReceiveFrameP(); | 235 void ReceiveFrameP(); |
236 // Pushes frames to the registered webrtc::AudioTransport. | 236 // Pushes frames to the registered webrtc::AudioTransport. |
237 void SendFrameP(); | 237 void SendFrameP(); |
238 | 238 |
239 // The time in milliseconds when Process() was last called or 0 if no call | 239 // The time in milliseconds when Process() was last called or 0 if no call |
240 // has been made. | 240 // has been made. |
241 uint32 last_process_time_ms_; | 241 uint32_t last_process_time_ms_; |
242 | 242 |
243 // Callback for playout and recording. | 243 // Callback for playout and recording. |
244 webrtc::AudioTransport* audio_callback_; | 244 webrtc::AudioTransport* audio_callback_; |
245 | 245 |
246 bool recording_; // True when audio is being pushed from the instance. | 246 bool recording_; // True when audio is being pushed from the instance. |
247 bool playing_; // True when audio is being pulled by the instance. | 247 bool playing_; // True when audio is being pulled by the instance. |
248 | 248 |
249 bool play_is_initialized_; // True when the instance is ready to pull audio. | 249 bool play_is_initialized_; // True when the instance is ready to pull audio. |
250 bool rec_is_initialized_; // True when the instance is ready to push audio. | 250 bool rec_is_initialized_; // True when the instance is ready to push audio. |
251 | 251 |
252 // Input to and output from RecordedDataIsAvailable(..) makes it possible to | 252 // Input to and output from RecordedDataIsAvailable(..) makes it possible to |
253 // modify the current mic level. The implementation does not care about the | 253 // modify the current mic level. The implementation does not care about the |
254 // mic level so it just feeds back what it receives. | 254 // mic level so it just feeds back what it receives. |
255 uint32_t current_mic_level_; | 255 uint32_t current_mic_level_; |
256 | 256 |
257 // next_frame_time_ is updated in a non-drifting manner to indicate the next | 257 // next_frame_time_ is updated in a non-drifting manner to indicate the next |
258 // wall clock time the next frame should be generated and received. started_ | 258 // wall clock time the next frame should be generated and received. started_ |
259 // ensures that next_frame_time_ can be initialized properly on first call. | 259 // ensures that next_frame_time_ can be initialized properly on first call. |
260 bool started_; | 260 bool started_; |
261 uint32 next_frame_time_; | 261 uint32_t next_frame_time_; |
262 | 262 |
263 rtc::scoped_ptr<rtc::Thread> process_thread_; | 263 rtc::scoped_ptr<rtc::Thread> process_thread_; |
264 | 264 |
265 // Buffer for storing samples received from the webrtc::AudioTransport. | 265 // Buffer for storing samples received from the webrtc::AudioTransport. |
266 char rec_buffer_[kNumberSamples * kNumberBytesPerSample]; | 266 char rec_buffer_[kNumberSamples * kNumberBytesPerSample]; |
267 // Buffer for samples to send to the webrtc::AudioTransport. | 267 // Buffer for samples to send to the webrtc::AudioTransport. |
268 char send_buffer_[kNumberSamples * kNumberBytesPerSample]; | 268 char send_buffer_[kNumberSamples * kNumberBytesPerSample]; |
269 | 269 |
270 // Counter of frames received that have samples of high enough amplitude to | 270 // Counter of frames received that have samples of high enough amplitude to |
271 // indicate that the frames are not faked somewhere in the audio pipeline | 271 // indicate that the frames are not faked somewhere in the audio pipeline |
272 // (e.g. by a jitter buffer). | 272 // (e.g. by a jitter buffer). |
273 int frames_received_; | 273 int frames_received_; |
274 | 274 |
275 // Protects variables that are accessed from process_thread_ and | 275 // Protects variables that are accessed from process_thread_ and |
276 // the main thread. | 276 // the main thread. |
277 mutable rtc::CriticalSection crit_; | 277 mutable rtc::CriticalSection crit_; |
278 // Protects |audio_callback_| that is accessed from process_thread_ and | 278 // Protects |audio_callback_| that is accessed from process_thread_ and |
279 // the main thread. | 279 // the main thread. |
280 rtc::CriticalSection crit_callback_; | 280 rtc::CriticalSection crit_callback_; |
281 }; | 281 }; |
282 | 282 |
283 #endif // TALK_APP_WEBRTC_TEST_FAKEAUDIOCAPTUREMODULE_H_ | 283 #endif // TALK_APP_WEBRTC_TEST_FAKEAUDIOCAPTUREMODULE_H_ |
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