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rhubarb-lip-sync/lib/webrtc-8d2248ff/webrtc/voice_engine/voe_base_impl.cc

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/*
* Copyright (c) 2012 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 "webrtc/voice_engine/voe_base_impl.h"
#include "webrtc/base/format_macros.h"
#include "webrtc/base/logging.h"
#include "webrtc/common.h"
#include "webrtc/common_audio/signal_processing/include/signal_processing_library.h"
#include "webrtc/modules/audio_coding/codecs/builtin_audio_decoder_factory.h"
#include "webrtc/modules/audio_coding/include/audio_coding_module.h"
#include "webrtc/modules/audio_device/audio_device_impl.h"
#include "webrtc/modules/audio_processing/include/audio_processing.h"
#include "webrtc/system_wrappers/include/file_wrapper.h"
#include "webrtc/voice_engine/channel.h"
#include "webrtc/voice_engine/include/voe_errors.h"
#include "webrtc/voice_engine/output_mixer.h"
#include "webrtc/voice_engine/transmit_mixer.h"
#include "webrtc/voice_engine/utility.h"
#include "webrtc/voice_engine/voice_engine_impl.h"
namespace webrtc {
VoEBase* VoEBase::GetInterface(VoiceEngine* voiceEngine) {
if (nullptr == voiceEngine) {
return nullptr;
}
VoiceEngineImpl* s = static_cast<VoiceEngineImpl*>(voiceEngine);
s->AddRef();
return s;
}
VoEBaseImpl::VoEBaseImpl(voe::SharedData* shared)
: voiceEngineObserverPtr_(nullptr),
shared_(shared) {}
VoEBaseImpl::~VoEBaseImpl() {
TerminateInternal();
}
void VoEBaseImpl::OnErrorIsReported(const ErrorCode error) {
rtc::CritScope cs(&callbackCritSect_);
int errCode = 0;
if (error == AudioDeviceObserver::kRecordingError) {
errCode = VE_RUNTIME_REC_ERROR;
LOG_F(LS_ERROR) << "VE_RUNTIME_REC_ERROR";
} else if (error == AudioDeviceObserver::kPlayoutError) {
errCode = VE_RUNTIME_PLAY_ERROR;
LOG_F(LS_ERROR) << "VE_RUNTIME_PLAY_ERROR";
}
if (voiceEngineObserverPtr_) {
// Deliver callback (-1 <=> no channel dependency)
voiceEngineObserverPtr_->CallbackOnError(-1, errCode);
}
}
void VoEBaseImpl::OnWarningIsReported(const WarningCode warning) {
rtc::CritScope cs(&callbackCritSect_);
int warningCode = 0;
if (warning == AudioDeviceObserver::kRecordingWarning) {
warningCode = VE_RUNTIME_REC_WARNING;
LOG_F(LS_WARNING) << "VE_RUNTIME_REC_WARNING";
} else if (warning == AudioDeviceObserver::kPlayoutWarning) {
warningCode = VE_RUNTIME_PLAY_WARNING;
LOG_F(LS_WARNING) << "VE_RUNTIME_PLAY_WARNING";
}
if (voiceEngineObserverPtr_) {
// Deliver callback (-1 <=> no channel dependency)
voiceEngineObserverPtr_->CallbackOnError(-1, warningCode);
}
}
int32_t VoEBaseImpl::RecordedDataIsAvailable(const void* audioSamples,
const size_t nSamples,
const size_t nBytesPerSample,
const size_t nChannels,
const uint32_t samplesPerSec,
const uint32_t totalDelayMS,
const int32_t clockDrift,
const uint32_t currentMicLevel,
const bool keyPressed,
uint32_t& newMicLevel) {
newMicLevel = static_cast<uint32_t>(ProcessRecordedDataWithAPM(
nullptr, 0, audioSamples, samplesPerSec, nChannels, nSamples,
totalDelayMS, clockDrift, currentMicLevel, keyPressed));
return 0;
}
int32_t VoEBaseImpl::NeedMorePlayData(const size_t nSamples,
const size_t nBytesPerSample,
const size_t nChannels,
const uint32_t samplesPerSec,
void* audioSamples,
size_t& nSamplesOut,
int64_t* elapsed_time_ms,
int64_t* ntp_time_ms) {
GetPlayoutData(static_cast<int>(samplesPerSec), nChannels, nSamples, true,
audioSamples, elapsed_time_ms, ntp_time_ms);
nSamplesOut = audioFrame_.samples_per_channel_;
return 0;
}
int VoEBaseImpl::OnDataAvailable(const int voe_channels[],
size_t number_of_voe_channels,
const int16_t* audio_data, int sample_rate,
size_t number_of_channels,
size_t number_of_frames,
int audio_delay_milliseconds, int volume,
bool key_pressed, bool need_audio_processing) {
if (number_of_voe_channels == 0) return 0;
if (need_audio_processing) {
return ProcessRecordedDataWithAPM(
voe_channels, number_of_voe_channels, audio_data, sample_rate,
number_of_channels, number_of_frames, audio_delay_milliseconds, 0,
volume, key_pressed);
}
// No need to go through the APM, demultiplex the data to each VoE channel,
// encode and send to the network.
for (size_t i = 0; i < number_of_voe_channels; ++i) {
// TODO(ajm): In the case where multiple channels are using the same codec
// rate, this path needlessly does extra conversions. We should convert once
// and share between channels.
PushCaptureData(voe_channels[i], audio_data, 16, sample_rate,
number_of_channels, number_of_frames);
}
// Return 0 to indicate no need to change the volume.
return 0;
}
void VoEBaseImpl::OnData(int voe_channel, const void* audio_data,
int bits_per_sample, int sample_rate,
size_t number_of_channels, size_t number_of_frames) {
PushCaptureData(voe_channel, audio_data, bits_per_sample, sample_rate,
number_of_channels, number_of_frames);
}
void VoEBaseImpl::PushCaptureData(int voe_channel, const void* audio_data,
int bits_per_sample, int sample_rate,
size_t number_of_channels,
size_t number_of_frames) {
voe::ChannelOwner ch = shared_->channel_manager().GetChannel(voe_channel);
voe::Channel* channel_ptr = ch.channel();
if (!channel_ptr) return;
if (channel_ptr->Sending()) {
channel_ptr->Demultiplex(static_cast<const int16_t*>(audio_data),
sample_rate, number_of_frames, number_of_channels);
channel_ptr->PrepareEncodeAndSend(sample_rate);
channel_ptr->EncodeAndSend();
}
}
void VoEBaseImpl::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) {
assert(bits_per_sample == 16);
assert(number_of_frames == static_cast<size_t>(sample_rate / 100));
GetPlayoutData(sample_rate, number_of_channels, number_of_frames, false,
audio_data, elapsed_time_ms, ntp_time_ms);
}
int VoEBaseImpl::RegisterVoiceEngineObserver(VoiceEngineObserver& observer) {
rtc::CritScope cs(&callbackCritSect_);
if (voiceEngineObserverPtr_) {
shared_->SetLastError(
VE_INVALID_OPERATION, kTraceError,
"RegisterVoiceEngineObserver() observer already enabled");
return -1;
}
// Register the observer in all active channels
for (voe::ChannelManager::Iterator it(&shared_->channel_manager());
it.IsValid(); it.Increment()) {
it.GetChannel()->RegisterVoiceEngineObserver(observer);
}
shared_->transmit_mixer()->RegisterVoiceEngineObserver(observer);
voiceEngineObserverPtr_ = &observer;
return 0;
}
int VoEBaseImpl::DeRegisterVoiceEngineObserver() {
rtc::CritScope cs(&callbackCritSect_);
if (!voiceEngineObserverPtr_) {
shared_->SetLastError(
VE_INVALID_OPERATION, kTraceError,
"DeRegisterVoiceEngineObserver() observer already disabled");
return 0;
}
voiceEngineObserverPtr_ = nullptr;
// Deregister the observer in all active channels
for (voe::ChannelManager::Iterator it(&shared_->channel_manager());
it.IsValid(); it.Increment()) {
it.GetChannel()->DeRegisterVoiceEngineObserver();
}
return 0;
}
int VoEBaseImpl::Init(
AudioDeviceModule* external_adm,
AudioProcessing* audioproc,
const rtc::scoped_refptr<AudioDecoderFactory>& decoder_factory) {
rtc::CritScope cs(shared_->crit_sec());
WebRtcSpl_Init();
if (shared_->statistics().Initialized()) {
return 0;
}
if (shared_->process_thread()) {
shared_->process_thread()->Start();
}
// Create an internal ADM if the user has not added an external
// ADM implementation as input to Init().
if (external_adm == nullptr) {
#if !defined(WEBRTC_INCLUDE_INTERNAL_AUDIO_DEVICE)
return -1;
#else
// Create the internal ADM implementation.
shared_->set_audio_device(AudioDeviceModule::Create(
VoEId(shared_->instance_id(), -1), shared_->audio_device_layer()));
if (shared_->audio_device() == nullptr) {
shared_->SetLastError(VE_NO_MEMORY, kTraceCritical,
"Init() failed to create the ADM");
return -1;
}
#endif // WEBRTC_INCLUDE_INTERNAL_AUDIO_DEVICE
} else {
// Use the already existing external ADM implementation.
shared_->set_audio_device(external_adm);
LOG_F(LS_INFO)
<< "An external ADM implementation will be used in VoiceEngine";
}
// Register the ADM to the process thread, which will drive the error
// callback mechanism
if (shared_->process_thread()) {
shared_->process_thread()->RegisterModule(shared_->audio_device());
}
bool available = false;
// --------------------
// Reinitialize the ADM
// Register the AudioObserver implementation
if (shared_->audio_device()->RegisterEventObserver(this) != 0) {
shared_->SetLastError(
VE_AUDIO_DEVICE_MODULE_ERROR, kTraceWarning,
"Init() failed to register event observer for the ADM");
}
// Register the AudioTransport implementation
if (shared_->audio_device()->RegisterAudioCallback(this) != 0) {
shared_->SetLastError(
VE_AUDIO_DEVICE_MODULE_ERROR, kTraceWarning,
"Init() failed to register audio callback for the ADM");
}
// ADM initialization
if (shared_->audio_device()->Init() != 0) {
shared_->SetLastError(VE_AUDIO_DEVICE_MODULE_ERROR, kTraceError,
"Init() failed to initialize the ADM");
return -1;
}
// Initialize the default speaker
if (shared_->audio_device()->SetPlayoutDevice(
WEBRTC_VOICE_ENGINE_DEFAULT_DEVICE) != 0) {
shared_->SetLastError(VE_AUDIO_DEVICE_MODULE_ERROR, kTraceInfo,
"Init() failed to set the default output device");
}
if (shared_->audio_device()->InitSpeaker() != 0) {
shared_->SetLastError(VE_CANNOT_ACCESS_SPEAKER_VOL, kTraceInfo,
"Init() failed to initialize the speaker");
}
// Initialize the default microphone
if (shared_->audio_device()->SetRecordingDevice(
WEBRTC_VOICE_ENGINE_DEFAULT_DEVICE) != 0) {
shared_->SetLastError(VE_SOUNDCARD_ERROR, kTraceInfo,
"Init() failed to set the default input device");
}
if (shared_->audio_device()->InitMicrophone() != 0) {
shared_->SetLastError(VE_CANNOT_ACCESS_MIC_VOL, kTraceInfo,
"Init() failed to initialize the microphone");
}
// Set number of channels
if (shared_->audio_device()->StereoPlayoutIsAvailable(&available) != 0) {
shared_->SetLastError(VE_SOUNDCARD_ERROR, kTraceWarning,
"Init() failed to query stereo playout mode");
}
if (shared_->audio_device()->SetStereoPlayout(available) != 0) {
shared_->SetLastError(VE_SOUNDCARD_ERROR, kTraceWarning,
"Init() failed to set mono/stereo playout mode");
}
// TODO(andrew): These functions don't tell us whether stereo recording
// is truly available. We simply set the AudioProcessing input to stereo
// here, because we have to wait until receiving the first frame to
// determine the actual number of channels anyway.
//
// These functions may be changed; tracked here:
// http://code.google.com/p/webrtc/issues/detail?id=204
shared_->audio_device()->StereoRecordingIsAvailable(&available);
if (shared_->audio_device()->SetStereoRecording(available) != 0) {
shared_->SetLastError(VE_SOUNDCARD_ERROR, kTraceWarning,
"Init() failed to set mono/stereo recording mode");
}
if (!audioproc) {
audioproc = AudioProcessing::Create();
if (!audioproc) {
LOG(LS_ERROR) << "Failed to create AudioProcessing.";
shared_->SetLastError(VE_NO_MEMORY);
return -1;
}
}
shared_->set_audio_processing(audioproc);
// Set the error state for any failures in this block.
shared_->SetLastError(VE_APM_ERROR);
// Configure AudioProcessing components.
if (audioproc->high_pass_filter()->Enable(true) != 0) {
LOG_F(LS_ERROR) << "Failed to enable high pass filter.";
return -1;
}
if (audioproc->echo_cancellation()->enable_drift_compensation(false) != 0) {
LOG_F(LS_ERROR) << "Failed to disable drift compensation.";
return -1;
}
if (audioproc->noise_suppression()->set_level(kDefaultNsMode) != 0) {
LOG_F(LS_ERROR) << "Failed to set noise suppression level: "
<< kDefaultNsMode;
return -1;
}
GainControl* agc = audioproc->gain_control();
if (agc->set_analog_level_limits(kMinVolumeLevel, kMaxVolumeLevel) != 0) {
LOG_F(LS_ERROR) << "Failed to set analog level limits with minimum: "
<< kMinVolumeLevel << " and maximum: " << kMaxVolumeLevel;
return -1;
}
if (agc->set_mode(kDefaultAgcMode) != 0) {
LOG_F(LS_ERROR) << "Failed to set mode: " << kDefaultAgcMode;
return -1;
}
if (agc->Enable(kDefaultAgcState) != 0) {
LOG_F(LS_ERROR) << "Failed to set agc state: " << kDefaultAgcState;
return -1;
}
shared_->SetLastError(0); // Clear error state.
#ifdef WEBRTC_VOICE_ENGINE_AGC
bool agc_enabled =
agc->mode() == GainControl::kAdaptiveAnalog && agc->is_enabled();
if (shared_->audio_device()->SetAGC(agc_enabled) != 0) {
LOG_F(LS_ERROR) << "Failed to set agc to enabled: " << agc_enabled;
shared_->SetLastError(VE_AUDIO_DEVICE_MODULE_ERROR);
// TODO(ajm): No error return here due to
// https://code.google.com/p/webrtc/issues/detail?id=1464
}
#endif
if (decoder_factory)
decoder_factory_ = decoder_factory;
else
decoder_factory_ = CreateBuiltinAudioDecoderFactory();
return shared_->statistics().SetInitialized();
}
int VoEBaseImpl::Terminate() {
rtc::CritScope cs(shared_->crit_sec());
return TerminateInternal();
}
int VoEBaseImpl::CreateChannel() {
rtc::CritScope cs(shared_->crit_sec());
if (!shared_->statistics().Initialized()) {
shared_->SetLastError(VE_NOT_INITED, kTraceError);
return -1;
}
voe::ChannelOwner channel_owner =
shared_->channel_manager().CreateChannel(decoder_factory_);
return InitializeChannel(&channel_owner);
}
int VoEBaseImpl::CreateChannel(const Config& config) {
rtc::CritScope cs(shared_->crit_sec());
if (!shared_->statistics().Initialized()) {
shared_->SetLastError(VE_NOT_INITED, kTraceError);
return -1;
}
voe::ChannelOwner channel_owner =
shared_->channel_manager().CreateChannel(config, decoder_factory_);
return InitializeChannel(&channel_owner);
}
int VoEBaseImpl::InitializeChannel(voe::ChannelOwner* channel_owner) {
if (channel_owner->channel()->SetEngineInformation(
shared_->statistics(), *shared_->output_mixer(),
*shared_->transmit_mixer(), *shared_->process_thread(),
*shared_->audio_device(), voiceEngineObserverPtr_,
&callbackCritSect_) != 0) {
shared_->SetLastError(
VE_CHANNEL_NOT_CREATED, kTraceError,
"CreateChannel() failed to associate engine and channel."
" Destroying channel.");
shared_->channel_manager().DestroyChannel(
channel_owner->channel()->ChannelId());
return -1;
} else if (channel_owner->channel()->Init() != 0) {
shared_->SetLastError(
VE_CHANNEL_NOT_CREATED, kTraceError,
"CreateChannel() failed to initialize channel. Destroying"
" channel.");
shared_->channel_manager().DestroyChannel(
channel_owner->channel()->ChannelId());
return -1;
}
return channel_owner->channel()->ChannelId();
}
int VoEBaseImpl::DeleteChannel(int channel) {
rtc::CritScope cs(shared_->crit_sec());
if (!shared_->statistics().Initialized()) {
shared_->SetLastError(VE_NOT_INITED, kTraceError);
return -1;
}
{
voe::ChannelOwner ch = shared_->channel_manager().GetChannel(channel);
voe::Channel* channelPtr = ch.channel();
if (channelPtr == nullptr) {
shared_->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
"DeleteChannel() failed to locate channel");
return -1;
}
}
shared_->channel_manager().DestroyChannel(channel);
if (StopSend() != 0) {
return -1;
}
if (StopPlayout() != 0) {
return -1;
}
return 0;
}
int VoEBaseImpl::StartReceive(int channel) {
rtc::CritScope cs(shared_->crit_sec());
if (!shared_->statistics().Initialized()) {
shared_->SetLastError(VE_NOT_INITED, kTraceError);
return -1;
}
voe::ChannelOwner ch = shared_->channel_manager().GetChannel(channel);
voe::Channel* channelPtr = ch.channel();
if (channelPtr == nullptr) {
shared_->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
"StartReceive() failed to locate channel");
return -1;
}
return channelPtr->StartReceiving();
}
int VoEBaseImpl::StopReceive(int channel) {
rtc::CritScope cs(shared_->crit_sec());
if (!shared_->statistics().Initialized()) {
shared_->SetLastError(VE_NOT_INITED, kTraceError);
return -1;
}
voe::ChannelOwner ch = shared_->channel_manager().GetChannel(channel);
voe::Channel* channelPtr = ch.channel();
if (channelPtr == nullptr) {
shared_->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
"SetLocalReceiver() failed to locate channel");
return -1;
}
return channelPtr->StopReceiving();
}
int VoEBaseImpl::StartPlayout(int channel) {
rtc::CritScope cs(shared_->crit_sec());
if (!shared_->statistics().Initialized()) {
shared_->SetLastError(VE_NOT_INITED, kTraceError);
return -1;
}
voe::ChannelOwner ch = shared_->channel_manager().GetChannel(channel);
voe::Channel* channelPtr = ch.channel();
if (channelPtr == nullptr) {
shared_->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
"StartPlayout() failed to locate channel");
return -1;
}
if (channelPtr->Playing()) {
return 0;
}
if (StartPlayout() != 0) {
shared_->SetLastError(VE_AUDIO_DEVICE_MODULE_ERROR, kTraceError,
"StartPlayout() failed to start playout");
return -1;
}
return channelPtr->StartPlayout();
}
int VoEBaseImpl::StopPlayout(int channel) {
rtc::CritScope cs(shared_->crit_sec());
if (!shared_->statistics().Initialized()) {
shared_->SetLastError(VE_NOT_INITED, kTraceError);
return -1;
}
voe::ChannelOwner ch = shared_->channel_manager().GetChannel(channel);
voe::Channel* channelPtr = ch.channel();
if (channelPtr == nullptr) {
shared_->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
"StopPlayout() failed to locate channel");
return -1;
}
if (channelPtr->StopPlayout() != 0) {
LOG_F(LS_WARNING) << "StopPlayout() failed to stop playout for channel "
<< channel;
}
return StopPlayout();
}
int VoEBaseImpl::StartSend(int channel) {
rtc::CritScope cs(shared_->crit_sec());
if (!shared_->statistics().Initialized()) {
shared_->SetLastError(VE_NOT_INITED, kTraceError);
return -1;
}
voe::ChannelOwner ch = shared_->channel_manager().GetChannel(channel);
voe::Channel* channelPtr = ch.channel();
if (channelPtr == nullptr) {
shared_->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
"StartSend() failed to locate channel");
return -1;
}
if (channelPtr->Sending()) {
return 0;
}
if (StartSend() != 0) {
shared_->SetLastError(VE_AUDIO_DEVICE_MODULE_ERROR, kTraceError,
"StartSend() failed to start recording");
return -1;
}
return channelPtr->StartSend();
}
int VoEBaseImpl::StopSend(int channel) {
rtc::CritScope cs(shared_->crit_sec());
if (!shared_->statistics().Initialized()) {
shared_->SetLastError(VE_NOT_INITED, kTraceError);
return -1;
}
voe::ChannelOwner ch = shared_->channel_manager().GetChannel(channel);
voe::Channel* channelPtr = ch.channel();
if (channelPtr == nullptr) {
shared_->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
"StopSend() failed to locate channel");
return -1;
}
if (channelPtr->StopSend() != 0) {
LOG_F(LS_WARNING) << "StopSend() failed to stop sending for channel "
<< channel;
}
return StopSend();
}
int VoEBaseImpl::GetVersion(char version[1024]) {
if (version == nullptr) {
shared_->SetLastError(VE_INVALID_ARGUMENT, kTraceError);
return -1;
}
std::string versionString = VoiceEngine::GetVersionString();
RTC_DCHECK_GT(1024u, versionString.size() + 1);
char* end = std::copy(versionString.cbegin(), versionString.cend(), version);
end[0] = '\n';
end[1] = '\0';
return 0;
}
int VoEBaseImpl::LastError() { return (shared_->statistics().LastError()); }
int32_t VoEBaseImpl::StartPlayout() {
if (!shared_->audio_device()->Playing()) {
if (shared_->audio_device()->InitPlayout() != 0) {
LOG_F(LS_ERROR) << "Failed to initialize playout";
return -1;
}
if (shared_->audio_device()->StartPlayout() != 0) {
LOG_F(LS_ERROR) << "Failed to start playout";
return -1;
}
}
return 0;
}
int32_t VoEBaseImpl::StopPlayout() {
// Stop audio-device playing if no channel is playing out
if (shared_->NumOfPlayingChannels() == 0) {
if (shared_->audio_device()->StopPlayout() != 0) {
shared_->SetLastError(VE_CANNOT_STOP_PLAYOUT, kTraceError,
"StopPlayout() failed to stop playout");
return -1;
}
}
return 0;
}
int32_t VoEBaseImpl::StartSend() {
if (!shared_->audio_device()->RecordingIsInitialized() &&
!shared_->audio_device()->Recording()) {
if (shared_->audio_device()->InitRecording() != 0) {
LOG_F(LS_ERROR) << "Failed to initialize recording";
return -1;
}
}
if (!shared_->audio_device()->Recording()) {
if (shared_->audio_device()->StartRecording() != 0) {
LOG_F(LS_ERROR) << "Failed to start recording";
return -1;
}
}
return 0;
}
int32_t VoEBaseImpl::StopSend() {
if (shared_->NumOfSendingChannels() == 0 &&
!shared_->transmit_mixer()->IsRecordingMic()) {
// Stop audio-device recording if no channel is recording
if (shared_->audio_device()->StopRecording() != 0) {
shared_->SetLastError(VE_CANNOT_STOP_RECORDING, kTraceError,
"StopSend() failed to stop recording");
return -1;
}
shared_->transmit_mixer()->StopSend();
}
return 0;
}
int32_t VoEBaseImpl::TerminateInternal() {
// Delete any remaining channel objects
shared_->channel_manager().DestroyAllChannels();
if (shared_->process_thread()) {
if (shared_->audio_device()) {
shared_->process_thread()->DeRegisterModule(shared_->audio_device());
}
shared_->process_thread()->Stop();
}
if (shared_->audio_device()) {
if (shared_->audio_device()->StopPlayout() != 0) {
shared_->SetLastError(VE_SOUNDCARD_ERROR, kTraceWarning,
"TerminateInternal() failed to stop playout");
}
if (shared_->audio_device()->StopRecording() != 0) {
shared_->SetLastError(VE_SOUNDCARD_ERROR, kTraceWarning,
"TerminateInternal() failed to stop recording");
}
if (shared_->audio_device()->RegisterEventObserver(nullptr) != 0) {
shared_->SetLastError(
VE_AUDIO_DEVICE_MODULE_ERROR, kTraceWarning,
"TerminateInternal() failed to de-register event observer "
"for the ADM");
}
if (shared_->audio_device()->RegisterAudioCallback(nullptr) != 0) {
shared_->SetLastError(
VE_AUDIO_DEVICE_MODULE_ERROR, kTraceWarning,
"TerminateInternal() failed to de-register audio callback "
"for the ADM");
}
if (shared_->audio_device()->Terminate() != 0) {
shared_->SetLastError(VE_AUDIO_DEVICE_MODULE_ERROR, kTraceError,
"TerminateInternal() failed to terminate the ADM");
}
shared_->set_audio_device(nullptr);
}
if (shared_->audio_processing()) {
shared_->set_audio_processing(nullptr);
}
return shared_->statistics().SetUnInitialized();
}
int VoEBaseImpl::ProcessRecordedDataWithAPM(
const int voe_channels[], size_t number_of_voe_channels,
const void* audio_data, uint32_t sample_rate, size_t number_of_channels,
size_t number_of_frames, uint32_t audio_delay_milliseconds,
int32_t clock_drift, uint32_t volume, bool key_pressed) {
assert(shared_->transmit_mixer() != nullptr);
assert(shared_->audio_device() != nullptr);
uint32_t max_volume = 0;
uint16_t voe_mic_level = 0;
// Check for zero to skip this calculation; the consumer may use this to
// indicate no volume is available.
if (volume != 0) {
// Scale from ADM to VoE level range
if (shared_->audio_device()->MaxMicrophoneVolume(&max_volume) == 0) {
if (max_volume) {
voe_mic_level = static_cast<uint16_t>(
(volume * kMaxVolumeLevel + static_cast<int>(max_volume / 2)) /
max_volume);
}
}
// We learned that on certain systems (e.g Linux) the voe_mic_level
// can be greater than the maxVolumeLevel therefore
// we are going to cap the voe_mic_level to the maxVolumeLevel
// and change the maxVolume to volume if it turns out that
// the voe_mic_level is indeed greater than the maxVolumeLevel.
if (voe_mic_level > kMaxVolumeLevel) {
voe_mic_level = kMaxVolumeLevel;
max_volume = volume;
}
}
// Perform channel-independent operations
// (APM, mix with file, record to file, mute, etc.)
shared_->transmit_mixer()->PrepareDemux(
audio_data, number_of_frames, number_of_channels, sample_rate,
static_cast<uint16_t>(audio_delay_milliseconds), clock_drift,
voe_mic_level, key_pressed);
// Copy the audio frame to each sending channel and perform
// channel-dependent operations (file mixing, mute, etc.), encode and
// packetize+transmit the RTP packet. When |number_of_voe_channels| == 0,
// do the operations on all the existing VoE channels; otherwise the
// operations will be done on specific channels.
if (number_of_voe_channels == 0) {
shared_->transmit_mixer()->DemuxAndMix();
shared_->transmit_mixer()->EncodeAndSend();
} else {
shared_->transmit_mixer()->DemuxAndMix(voe_channels,
number_of_voe_channels);
shared_->transmit_mixer()->EncodeAndSend(voe_channels,
number_of_voe_channels);
}
// Scale from VoE to ADM level range.
uint32_t new_voe_mic_level = shared_->transmit_mixer()->CaptureLevel();
if (new_voe_mic_level != voe_mic_level) {
// Return the new volume if AGC has changed the volume.
return static_cast<int>((new_voe_mic_level * max_volume +
static_cast<int>(kMaxVolumeLevel / 2)) /
kMaxVolumeLevel);
}
// Return 0 to indicate no change on the volume.
return 0;
}
void VoEBaseImpl::GetPlayoutData(int sample_rate, size_t number_of_channels,
size_t number_of_frames, bool feed_data_to_apm,
void* audio_data, int64_t* elapsed_time_ms,
int64_t* ntp_time_ms) {
assert(shared_->output_mixer() != nullptr);
// TODO(andrew): if the device is running in mono, we should tell the mixer
// here so that it will only request mono from AudioCodingModule.
// Perform mixing of all active participants (channel-based mixing)
shared_->output_mixer()->MixActiveChannels();
// Additional operations on the combined signal
shared_->output_mixer()->DoOperationsOnCombinedSignal(feed_data_to_apm);
// Retrieve the final output mix (resampled to match the ADM)
shared_->output_mixer()->GetMixedAudio(sample_rate, number_of_channels,
&audioFrame_);
assert(number_of_frames == audioFrame_.samples_per_channel_);
assert(sample_rate == audioFrame_.sample_rate_hz_);
// Deliver audio (PCM) samples to the ADM
memcpy(audio_data, audioFrame_.data_,
sizeof(int16_t) * number_of_frames * number_of_channels);
*elapsed_time_ms = audioFrame_.elapsed_time_ms_;
*ntp_time_ms = audioFrame_.ntp_time_ms_;
}
int VoEBaseImpl::AssociateSendChannel(int channel,
int accociate_send_channel) {
rtc::CritScope cs(shared_->crit_sec());
if (!shared_->statistics().Initialized()) {
shared_->SetLastError(VE_NOT_INITED, kTraceError);
return -1;
}
voe::ChannelOwner ch = shared_->channel_manager().GetChannel(channel);
voe::Channel* channel_ptr = ch.channel();
if (channel_ptr == NULL) {
shared_->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
"AssociateSendChannel() failed to locate channel");
return -1;
}
ch = shared_->channel_manager().GetChannel(accociate_send_channel);
voe::Channel* accociate_send_channel_ptr = ch.channel();
if (accociate_send_channel_ptr == NULL) {
shared_->SetLastError(VE_CHANNEL_NOT_VALID, kTraceError,
"AssociateSendChannel() failed to locate accociate_send_channel");
return -1;
}
channel_ptr->set_associate_send_channel(ch);
return 0;
}
} // namespace webrtc
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