| OLD | NEW |
| 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 "media/audio/audio_input_device.h" | 5 #include "media/audio/audio_input_device.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/memory/scoped_vector.h" | 9 #include "base/memory/scoped_vector.h" |
| 10 #include "base/threading/thread_restrictions.h" | 10 #include "base/threading/thread_restrictions.h" |
| (...skipping 18 matching lines...) Expand all Loading... |
| 29 AudioThreadCallback(const AudioParameters& audio_parameters, | 29 AudioThreadCallback(const AudioParameters& audio_parameters, |
| 30 base::SharedMemoryHandle memory, | 30 base::SharedMemoryHandle memory, |
| 31 int memory_length, | 31 int memory_length, |
| 32 int total_segments, | 32 int total_segments, |
| 33 CaptureCallback* capture_callback); | 33 CaptureCallback* capture_callback); |
| 34 ~AudioThreadCallback() override; | 34 ~AudioThreadCallback() override; |
| 35 | 35 |
| 36 void MapSharedMemory() override; | 36 void MapSharedMemory() override; |
| 37 | 37 |
| 38 // Called whenever we receive notifications about pending data. | 38 // Called whenever we receive notifications about pending data. |
| 39 void Process(int pending_data) override; | 39 void Process(uint32 pending_data) override; |
| 40 | 40 |
| 41 private: | 41 private: |
| 42 int current_segment_id_; | 42 int current_segment_id_; |
| 43 ScopedVector<media::AudioBus> audio_buses_; | 43 ScopedVector<media::AudioBus> audio_buses_; |
| 44 CaptureCallback* capture_callback_; | 44 CaptureCallback* capture_callback_; |
| 45 | 45 |
| 46 DISALLOW_COPY_AND_ASSIGN(AudioThreadCallback); | 46 DISALLOW_COPY_AND_ASSIGN(AudioThreadCallback); |
| 47 }; | 47 }; |
| 48 | 48 |
| 49 AudioInputDevice::AudioInputDevice( | 49 AudioInputDevice::AudioInputDevice( |
| (...skipping 238 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 288 for (int i = 0; i < total_segments_; ++i) { | 288 for (int i = 0; i < total_segments_; ++i) { |
| 289 media::AudioInputBuffer* buffer = | 289 media::AudioInputBuffer* buffer = |
| 290 reinterpret_cast<media::AudioInputBuffer*>(ptr); | 290 reinterpret_cast<media::AudioInputBuffer*>(ptr); |
| 291 scoped_ptr<media::AudioBus> audio_bus = | 291 scoped_ptr<media::AudioBus> audio_bus = |
| 292 media::AudioBus::WrapMemory(audio_parameters_, buffer->audio); | 292 media::AudioBus::WrapMemory(audio_parameters_, buffer->audio); |
| 293 audio_buses_.push_back(audio_bus.release()); | 293 audio_buses_.push_back(audio_bus.release()); |
| 294 ptr += segment_length_; | 294 ptr += segment_length_; |
| 295 } | 295 } |
| 296 } | 296 } |
| 297 | 297 |
| 298 void AudioInputDevice::AudioThreadCallback::Process(int pending_data) { | 298 void AudioInputDevice::AudioThreadCallback::Process(uint32 pending_data) { |
| 299 // The shared memory represents parameters, size of the data buffer and the | 299 // The shared memory represents parameters, size of the data buffer and the |
| 300 // actual data buffer containing audio data. Map the memory into this | 300 // actual data buffer containing audio data. Map the memory into this |
| 301 // structure and parse out parameters and the data area. | 301 // structure and parse out parameters and the data area. |
| 302 uint8* ptr = static_cast<uint8*>(shared_memory_.memory()); | 302 uint8* ptr = static_cast<uint8*>(shared_memory_.memory()); |
| 303 ptr += current_segment_id_ * segment_length_; | 303 ptr += current_segment_id_ * segment_length_; |
| 304 AudioInputBuffer* buffer = reinterpret_cast<AudioInputBuffer*>(ptr); | 304 AudioInputBuffer* buffer = reinterpret_cast<AudioInputBuffer*>(ptr); |
| 305 // Usually this will be equal but in the case of low sample rate (e.g. 8kHz, | 305 // Usually this will be equal but in the case of low sample rate (e.g. 8kHz, |
| 306 // the buffer may be bigger (on mac at least)). | 306 // the buffer may be bigger (on mac at least)). |
| 307 DCHECK_GE(buffer->params.size, | 307 DCHECK_GE(buffer->params.size, |
| 308 segment_length_ - sizeof(AudioInputBufferParameters)); | 308 segment_length_ - sizeof(AudioInputBufferParameters)); |
| 309 double volume = buffer->params.volume; | 309 double volume = buffer->params.volume; |
| 310 bool key_pressed = buffer->params.key_pressed; | 310 bool key_pressed = buffer->params.key_pressed; |
| 311 | 311 |
| 312 // Use pre-allocated audio bus wrapping existing block of shared memory. | 312 // Use pre-allocated audio bus wrapping existing block of shared memory. |
| 313 media::AudioBus* audio_bus = audio_buses_[current_segment_id_]; | 313 media::AudioBus* audio_bus = audio_buses_[current_segment_id_]; |
| 314 | 314 |
| 315 // Deliver captured data to the client in floating point format | 315 // Deliver captured data to the client in floating point format |
| 316 // and update the audio-delay measurement. | 316 // and update the audio-delay measurement. |
| 317 int audio_delay_milliseconds = pending_data / bytes_per_ms_; | 317 int audio_delay_milliseconds = pending_data / bytes_per_ms_; |
| 318 capture_callback_->Capture( | 318 capture_callback_->Capture( |
| 319 audio_bus, audio_delay_milliseconds, volume, key_pressed); | 319 audio_bus, audio_delay_milliseconds, volume, key_pressed); |
| 320 | 320 |
| 321 if (++current_segment_id_ >= total_segments_) | 321 if (++current_segment_id_ >= total_segments_) |
| 322 current_segment_id_ = 0; | 322 current_segment_id_ = 0; |
| 323 } | 323 } |
| 324 | 324 |
| 325 } // namespace media | 325 } // namespace media |
| OLD | NEW |