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/*
* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "modules/audio_device/include/audio_device_data_observer.h"
#include "api/audio/audio_device_defines.h"
#include "api/make_ref_counted.h"
#include "rtc_base/checks.h"
namespace webrtc {
namespace {
// A wrapper over AudioDeviceModule that registers itself as AudioTransport
// callback and redirects the PCM data to AudioDeviceDataObserver callback.
class ADMWrapper : public AudioDeviceModule, public AudioTransport {
public:
ADMWrapper(rtc::scoped_refptr<AudioDeviceModule> impl,
AudioDeviceDataObserver* legacy_observer,
std::unique_ptr<AudioDeviceDataObserver> observer)
: impl_(impl),
legacy_observer_(legacy_observer),
observer_(std::move(observer)) {
is_valid_ = impl_.get() != nullptr;
}
ADMWrapper(AudioLayer audio_layer,
TaskQueueFactory* task_queue_factory,
AudioDeviceDataObserver* legacy_observer,
std::unique_ptr<AudioDeviceDataObserver> observer)
: ADMWrapper(AudioDeviceModule::Create(audio_layer, task_queue_factory),
legacy_observer,
std::move(observer)) {}
~ADMWrapper() override {
audio_transport_ = nullptr;
observer_ = nullptr;
}
// Make sure we have a valid ADM before returning it to user.
bool IsValid() { return is_valid_; }
int32_t RecordedDataIsAvailable(const void* audioSamples,
size_t nSamples,
size_t nBytesPerSample,
size_t nChannels,
uint32_t samples_per_sec,
uint32_t total_delay_ms,
int32_t clockDrift,
uint32_t currentMicLevel,
bool keyPressed,
uint32_t& newMicLevel) override {
return RecordedDataIsAvailable(
audioSamples, nSamples, nBytesPerSample, nChannels, samples_per_sec,
total_delay_ms, clockDrift, currentMicLevel, keyPressed, newMicLevel,
/*capture_timestamp_ns=*/absl::nullopt);
}
// AudioTransport methods overrides.
int32_t RecordedDataIsAvailable(
const void* audioSamples,
size_t nSamples,
size_t nBytesPerSample,
size_t nChannels,
uint32_t samples_per_sec,
uint32_t total_delay_ms,
int32_t clockDrift,
uint32_t currentMicLevel,
bool keyPressed,
uint32_t& newMicLevel,
absl::optional<int64_t> capture_timestamp_ns) override {
int32_t res = 0;
// Capture PCM data of locally captured audio.
if (observer_) {
observer_->OnCaptureData(audioSamples, nSamples, nBytesPerSample,
nChannels, samples_per_sec);
}
// Send to the actual audio transport.
if (audio_transport_) {
res = audio_transport_->RecordedDataIsAvailable(
audioSamples, nSamples, nBytesPerSample, nChannels, samples_per_sec,
total_delay_ms, clockDrift, currentMicLevel, keyPressed, newMicLevel,
capture_timestamp_ns);
}
return res;
}
int32_t NeedMorePlayData(const size_t nSamples,
const size_t nBytesPerSample,
const size_t nChannels,
const uint32_t samples_per_sec,
void* audioSamples,
size_t& nSamplesOut,
int64_t* elapsed_time_ms,
int64_t* ntp_time_ms) override {
int32_t res = 0;
// Set out parameters to safe values to be sure not to return corrupted
// data.
nSamplesOut = 0;
*elapsed_time_ms = -1;
*ntp_time_ms = -1;
// Request data from audio transport.
if (audio_transport_) {
res = audio_transport_->NeedMorePlayData(
nSamples, nBytesPerSample, nChannels, samples_per_sec, audioSamples,
nSamplesOut, elapsed_time_ms, ntp_time_ms);
}
// Capture rendered data.
if (observer_) {
observer_->OnRenderData(audioSamples, nSamples, nBytesPerSample,
nChannels, samples_per_sec);
}
return res;
}
void PullRenderData(int bits_per_sample,
int sample_rate,
size_t number_of_channels,
size_t number_of_frames,
void* audio_data,
int64_t* elapsed_time_ms,
int64_t* ntp_time_ms) override {
RTC_DCHECK_NOTREACHED();
}
// Override AudioDeviceModule's RegisterAudioCallback method to remember the
// actual audio transport (e.g.: voice engine).
int32_t RegisterAudioCallback(AudioTransport* audio_callback) override {
// Remember the audio callback to forward PCM data
audio_transport_ = audio_callback;
return 0;
}
// AudioDeviceModule pass through method overrides.
int32_t ActiveAudioLayer(AudioLayer* audio_layer) const override {
return impl_->ActiveAudioLayer(audio_layer);
}
int32_t Init() override {
int res = impl_->Init();
if (res != 0) {
return res;
}
// Register self as the audio transport callback for underlying ADM impl.
impl_->RegisterAudioCallback(this);
return res;
}
int32_t Terminate() override { return impl_->Terminate(); }
bool Initialized() const override { return impl_->Initialized(); }
int16_t PlayoutDevices() override { return impl_->PlayoutDevices(); }
int16_t RecordingDevices() override { return impl_->RecordingDevices(); }
int32_t PlayoutDeviceName(uint16_t index,
char name[kAdmMaxDeviceNameSize],
char guid[kAdmMaxGuidSize]) override {
return impl_->PlayoutDeviceName(index, name, guid);
}
int32_t RecordingDeviceName(uint16_t index,
char name[kAdmMaxDeviceNameSize],
char guid[kAdmMaxGuidSize]) override {
return impl_->RecordingDeviceName(index, name, guid);
}
int32_t SetPlayoutDevice(uint16_t index) override {
return impl_->SetPlayoutDevice(index);
}
int32_t SetPlayoutDevice(WindowsDeviceType device) override {
return impl_->SetPlayoutDevice(device);
}
int32_t SetRecordingDevice(uint16_t index) override {
return impl_->SetRecordingDevice(index);
}
int32_t SetRecordingDevice(WindowsDeviceType device) override {
return impl_->SetRecordingDevice(device);
}
int32_t PlayoutIsAvailable(bool* available) override {
return impl_->PlayoutIsAvailable(available);
}
int32_t InitPlayout() override { return impl_->InitPlayout(); }
bool PlayoutIsInitialized() const override {
return impl_->PlayoutIsInitialized();
}
int32_t RecordingIsAvailable(bool* available) override {
return impl_->RecordingIsAvailable(available);
}
int32_t InitRecording() override { return impl_->InitRecording(); }
bool RecordingIsInitialized() const override {
return impl_->RecordingIsInitialized();
}
int32_t StartPlayout() override { return impl_->StartPlayout(); }
int32_t StopPlayout() override { return impl_->StopPlayout(); }
bool Playing() const override { return impl_->Playing(); }
int32_t StartRecording() override { return impl_->StartRecording(); }
int32_t StopRecording() override { return impl_->StopRecording(); }
bool Recording() const override { return impl_->Recording(); }
int32_t InitSpeaker() override { return impl_->InitSpeaker(); }
bool SpeakerIsInitialized() const override {
return impl_->SpeakerIsInitialized();
}
int32_t InitMicrophone() override { return impl_->InitMicrophone(); }
bool MicrophoneIsInitialized() const override {
return impl_->MicrophoneIsInitialized();
}
int32_t SpeakerVolumeIsAvailable(bool* available) override {
return impl_->SpeakerVolumeIsAvailable(available);
}
int32_t SetSpeakerVolume(uint32_t volume) override {
return impl_->SetSpeakerVolume(volume);
}
int32_t SpeakerVolume(uint32_t* volume) const override {
return impl_->SpeakerVolume(volume);
}
int32_t MaxSpeakerVolume(uint32_t* max_volume) const override {
return impl_->MaxSpeakerVolume(max_volume);
}
int32_t MinSpeakerVolume(uint32_t* min_volume) const override {
return impl_->MinSpeakerVolume(min_volume);
}
int32_t MicrophoneVolumeIsAvailable(bool* available) override {
return impl_->MicrophoneVolumeIsAvailable(available);
}
int32_t SetMicrophoneVolume(uint32_t volume) override {
return impl_->SetMicrophoneVolume(volume);
}
int32_t MicrophoneVolume(uint32_t* volume) const override {
return impl_->MicrophoneVolume(volume);
}
int32_t MaxMicrophoneVolume(uint32_t* max_volume) const override {
return impl_->MaxMicrophoneVolume(max_volume);
}
int32_t MinMicrophoneVolume(uint32_t* min_volume) const override {
return impl_->MinMicrophoneVolume(min_volume);
}
int32_t SpeakerMuteIsAvailable(bool* available) override {
return impl_->SpeakerMuteIsAvailable(available);
}
int32_t SetSpeakerMute(bool enable) override {
return impl_->SetSpeakerMute(enable);
}
int32_t SpeakerMute(bool* enabled) const override {
return impl_->SpeakerMute(enabled);
}
int32_t MicrophoneMuteIsAvailable(bool* available) override {
return impl_->MicrophoneMuteIsAvailable(available);
}
int32_t SetMicrophoneMute(bool enable) override {
return impl_->SetMicrophoneMute(enable);
}
int32_t MicrophoneMute(bool* enabled) const override {
return impl_->MicrophoneMute(enabled);
}
int32_t StereoPlayoutIsAvailable(bool* available) const override {
return impl_->StereoPlayoutIsAvailable(available);
}
int32_t SetStereoPlayout(bool enable) override {
return impl_->SetStereoPlayout(enable);
}
int32_t StereoPlayout(bool* enabled) const override {
return impl_->StereoPlayout(enabled);
}
int32_t StereoRecordingIsAvailable(bool* available) const override {
return impl_->StereoRecordingIsAvailable(available);
}
int32_t SetStereoRecording(bool enable) override {
return impl_->SetStereoRecording(enable);
}
int32_t StereoRecording(bool* enabled) const override {
return impl_->StereoRecording(enabled);
}
int32_t PlayoutDelay(uint16_t* delay_ms) const override {
return impl_->PlayoutDelay(delay_ms);
}
bool BuiltInAECIsAvailable() const override {
return impl_->BuiltInAECIsAvailable();
}
bool BuiltInAGCIsAvailable() const override {
return impl_->BuiltInAGCIsAvailable();
}
bool BuiltInNSIsAvailable() const override {
return impl_->BuiltInNSIsAvailable();
}
int32_t EnableBuiltInAEC(bool enable) override {
return impl_->EnableBuiltInAEC(enable);
}
int32_t EnableBuiltInAGC(bool enable) override {
return impl_->EnableBuiltInAGC(enable);
}
int32_t EnableBuiltInNS(bool enable) override {
return impl_->EnableBuiltInNS(enable);
}
int32_t GetPlayoutUnderrunCount() const override {
return impl_->GetPlayoutUnderrunCount();
}
// Only supported on iOS.
#if defined(WEBRTC_IOS)
int GetPlayoutAudioParameters(AudioParameters* params) const override {
return impl_->GetPlayoutAudioParameters(params);
}
int GetRecordAudioParameters(AudioParameters* params) const override {
return impl_->GetRecordAudioParameters(params);
}
#endif // WEBRTC_IOS
protected:
rtc::scoped_refptr<AudioDeviceModule> impl_;
AudioDeviceDataObserver* legacy_observer_ = nullptr;
std::unique_ptr<AudioDeviceDataObserver> observer_;
AudioTransport* audio_transport_ = nullptr;
bool is_valid_ = false;
};
} // namespace
rtc::scoped_refptr<AudioDeviceModule> CreateAudioDeviceWithDataObserver(
rtc::scoped_refptr<AudioDeviceModule> impl,
std::unique_ptr<AudioDeviceDataObserver> observer) {
auto audio_device = rtc::make_ref_counted<ADMWrapper>(impl, observer.get(),
std::move(observer));
if (!audio_device->IsValid()) {
return nullptr;
}
return audio_device;
}
rtc::scoped_refptr<AudioDeviceModule> CreateAudioDeviceWithDataObserver(
rtc::scoped_refptr<AudioDeviceModule> impl,
AudioDeviceDataObserver* legacy_observer) {
auto audio_device =
rtc::make_ref_counted<ADMWrapper>(impl, legacy_observer, nullptr);
if (!audio_device->IsValid()) {
return nullptr;
}
return audio_device;
}
rtc::scoped_refptr<AudioDeviceModule> CreateAudioDeviceWithDataObserver(
AudioDeviceModule::AudioLayer audio_layer,
TaskQueueFactory* task_queue_factory,
std::unique_ptr<AudioDeviceDataObserver> observer) {
auto audio_device = rtc::make_ref_counted<ADMWrapper>(
audio_layer, task_queue_factory, observer.get(), std::move(observer));
if (!audio_device->IsValid()) {
return nullptr;
}
return audio_device;
}
rtc::scoped_refptr<AudioDeviceModule> CreateAudioDeviceWithDataObserver(
AudioDeviceModule::AudioLayer audio_layer,
TaskQueueFactory* task_queue_factory,
AudioDeviceDataObserver* legacy_observer) {
auto audio_device = rtc::make_ref_counted<ADMWrapper>(
audio_layer, task_queue_factory, legacy_observer, nullptr);
if (!audio_device->IsValid()) {
return nullptr;
}
return audio_device;
}
} // namespace webrtc