Home | History | Annotate | Download | only in audio 
      1 /*
      2  *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 #include "webrtc/audio/audio_state.h"
     12 
     13 #include "webrtc/base/atomicops.h"
     14 #include "webrtc/base/checks.h"
     15 #include "webrtc/base/logging.h"
     16 #include "webrtc/voice_engine/include/voe_errors.h"
     17 
     18 namespace webrtc {
     19 namespace internal {
     20 
     21 AudioState::AudioState(const AudioState::Config& config)
     22     : config_(config), voe_base_(config.voice_engine) {
     23   process_thread_checker_.DetachFromThread();
     24   // Only one AudioState should be created per VoiceEngine.
     25   RTC_CHECK(voe_base_->RegisterVoiceEngineObserver(*this) != -1);
     26 }
     27 
     28 AudioState::~AudioState() {
     29   RTC_DCHECK(thread_checker_.CalledOnValidThread());
     30   voe_base_->DeRegisterVoiceEngineObserver();
     31 }
     32 
     33 VoiceEngine* AudioState::voice_engine() {
     34   RTC_DCHECK(thread_checker_.CalledOnValidThread());
     35   return config_.voice_engine;
     36 }
     37 
     38 bool AudioState::typing_noise_detected() const {
     39   RTC_DCHECK(thread_checker_.CalledOnValidThread());
     40   rtc::CritScope lock(&crit_sect_);
     41   return typing_noise_detected_;
     42 }
     43 
     44 // Reference count; implementation copied from rtc::RefCountedObject.
     45 int AudioState::AddRef() const {
     46   return rtc::AtomicOps::Increment(&ref_count_);
     47 }
     48 
     49 // Reference count; implementation copied from rtc::RefCountedObject.
     50 int AudioState::Release() const {
     51   int count = rtc::AtomicOps::Decrement(&ref_count_);
     52   if (!count) {
     53     delete this;
     54   }
     55   return count;
     56 }
     57 
     58 void AudioState::CallbackOnError(int channel_id, int err_code) {
     59   RTC_DCHECK(process_thread_checker_.CalledOnValidThread());
     60 
     61   // All call sites in VoE, as of this writing, specify -1 as channel_id.
     62   RTC_DCHECK(channel_id == -1);
     63   LOG(LS_INFO) << "VoiceEngine error " << err_code << " reported on channel "
     64                << channel_id << ".";
     65   if (err_code == VE_TYPING_NOISE_WARNING) {
     66     rtc::CritScope lock(&crit_sect_);
     67     typing_noise_detected_ = true;
     68   } else if (err_code == VE_TYPING_NOISE_OFF_WARNING) {
     69     rtc::CritScope lock(&crit_sect_);
     70     typing_noise_detected_ = false;
     71   }
     72 }
     73 }  // namespace internal
     74 
     75 rtc::scoped_refptr<AudioState> AudioState::Create(
     76     const AudioState::Config& config) {
     77   return rtc::scoped_refptr<AudioState>(new internal::AudioState(config));
     78 }
     79 }  // namespace webrtc
     80