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Diffstat (limited to 'third_party/libwebrtc/modules/audio_device/mac/audio_mixer_manager_mac.cc')
| -rw-r--r-- | third_party/libwebrtc/modules/audio_device/mac/audio_mixer_manager_mac.cc | 924 |
1 files changed, 924 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_device/mac/audio_mixer_manager_mac.cc b/third_party/libwebrtc/modules/audio_device/mac/audio_mixer_manager_mac.cc new file mode 100644 index 0000000000..942e7db3b3 --- /dev/null +++ b/third_party/libwebrtc/modules/audio_device/mac/audio_mixer_manager_mac.cc @@ -0,0 +1,924 @@ +/* + * 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 "modules/audio_device/mac/audio_mixer_manager_mac.h" + +#include <unistd.h> // getpid() + +#include "rtc_base/system/arch.h" + +namespace webrtc { + +#define WEBRTC_CA_RETURN_ON_ERR(expr) \ + do { \ + err = expr; \ + if (err != noErr) { \ + logCAMsg(rtc::LS_ERROR, "Error in " #expr, (const char*)&err); \ + return -1; \ + } \ + } while (0) + +#define WEBRTC_CA_LOG_ERR(expr) \ + do { \ + err = expr; \ + if (err != noErr) { \ + logCAMsg(rtc::LS_ERROR, "Error in " #expr, (const char*)&err); \ + } \ + } while (0) + +#define WEBRTC_CA_LOG_WARN(expr) \ + do { \ + err = expr; \ + if (err != noErr) { \ + logCAMsg(rtc::LS_WARNING, "Error in " #expr, (const char*)&err); \ + } \ + } while (0) + +AudioMixerManagerMac::AudioMixerManagerMac() + : _inputDeviceID(kAudioObjectUnknown), + _outputDeviceID(kAudioObjectUnknown), + _noInputChannels(0), + _noOutputChannels(0) { + RTC_DLOG(LS_INFO) << __FUNCTION__ << " created"; +} + +AudioMixerManagerMac::~AudioMixerManagerMac() { + RTC_DLOG(LS_INFO) << __FUNCTION__ << " destroyed"; + Close(); +} + +// ============================================================================ +// PUBLIC METHODS +// ============================================================================ + +int32_t AudioMixerManagerMac::Close() { + RTC_DLOG(LS_VERBOSE) << __FUNCTION__; + + MutexLock lock(&mutex_); + + CloseSpeakerLocked(); + CloseMicrophoneLocked(); + + return 0; +} + +int32_t AudioMixerManagerMac::CloseSpeaker() { + MutexLock lock(&mutex_); + return CloseSpeakerLocked(); +} + +int32_t AudioMixerManagerMac::CloseSpeakerLocked() { + RTC_DLOG(LS_VERBOSE) << __FUNCTION__; + + _outputDeviceID = kAudioObjectUnknown; + _noOutputChannels = 0; + + return 0; +} + +int32_t AudioMixerManagerMac::CloseMicrophone() { + MutexLock lock(&mutex_); + return CloseMicrophoneLocked(); +} + +int32_t AudioMixerManagerMac::CloseMicrophoneLocked() { + RTC_DLOG(LS_VERBOSE) << __FUNCTION__; + + _inputDeviceID = kAudioObjectUnknown; + _noInputChannels = 0; + + return 0; +} + +int32_t AudioMixerManagerMac::OpenSpeaker(AudioDeviceID deviceID) { + RTC_LOG(LS_VERBOSE) << "AudioMixerManagerMac::OpenSpeaker(id=" << deviceID + << ")"; + + MutexLock lock(&mutex_); + + OSStatus err = noErr; + UInt32 size = 0; + pid_t hogPid = -1; + + _outputDeviceID = deviceID; + + // Check which process, if any, has hogged the device. + AudioObjectPropertyAddress propertyAddress = { + kAudioDevicePropertyHogMode, kAudioDevicePropertyScopeOutput, 0}; + + // First, does it have the property? Aggregate devices don't. + if (AudioObjectHasProperty(_outputDeviceID, &propertyAddress)) { + size = sizeof(hogPid); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectGetPropertyData( + _outputDeviceID, &propertyAddress, 0, NULL, &size, &hogPid)); + + if (hogPid == -1) { + RTC_LOG(LS_VERBOSE) << "No process has hogged the output device"; + } + // getpid() is apparently "always successful" + else if (hogPid == getpid()) { + RTC_LOG(LS_VERBOSE) << "Our process has hogged the output device"; + } else { + RTC_LOG(LS_WARNING) << "Another process (pid = " + << static_cast<int>(hogPid) + << ") has hogged the output device"; + + return -1; + } + } + + // get number of channels from stream format + propertyAddress.mSelector = kAudioDevicePropertyStreamFormat; + + // Get the stream format, to be able to read the number of channels. + AudioStreamBasicDescription streamFormat; + size = sizeof(AudioStreamBasicDescription); + memset(&streamFormat, 0, size); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectGetPropertyData( + _outputDeviceID, &propertyAddress, 0, NULL, &size, &streamFormat)); + + _noOutputChannels = streamFormat.mChannelsPerFrame; + + return 0; +} + +int32_t AudioMixerManagerMac::OpenMicrophone(AudioDeviceID deviceID) { + RTC_LOG(LS_VERBOSE) << "AudioMixerManagerMac::OpenMicrophone(id=" << deviceID + << ")"; + + MutexLock lock(&mutex_); + + OSStatus err = noErr; + UInt32 size = 0; + pid_t hogPid = -1; + + _inputDeviceID = deviceID; + + // Check which process, if any, has hogged the device. + AudioObjectPropertyAddress propertyAddress = { + kAudioDevicePropertyHogMode, kAudioDevicePropertyScopeInput, 0}; + size = sizeof(hogPid); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectGetPropertyData( + _inputDeviceID, &propertyAddress, 0, NULL, &size, &hogPid)); + if (hogPid == -1) { + RTC_LOG(LS_VERBOSE) << "No process has hogged the input device"; + } + // getpid() is apparently "always successful" + else if (hogPid == getpid()) { + RTC_LOG(LS_VERBOSE) << "Our process has hogged the input device"; + } else { + RTC_LOG(LS_WARNING) << "Another process (pid = " << static_cast<int>(hogPid) + << ") has hogged the input device"; + + return -1; + } + + // get number of channels from stream format + propertyAddress.mSelector = kAudioDevicePropertyStreamFormat; + + // Get the stream format, to be able to read the number of channels. + AudioStreamBasicDescription streamFormat; + size = sizeof(AudioStreamBasicDescription); + memset(&streamFormat, 0, size); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectGetPropertyData( + _inputDeviceID, &propertyAddress, 0, NULL, &size, &streamFormat)); + + _noInputChannels = streamFormat.mChannelsPerFrame; + + return 0; +} + +bool AudioMixerManagerMac::SpeakerIsInitialized() const { + RTC_DLOG(LS_INFO) << __FUNCTION__; + + return (_outputDeviceID != kAudioObjectUnknown); +} + +bool AudioMixerManagerMac::MicrophoneIsInitialized() const { + RTC_DLOG(LS_INFO) << __FUNCTION__; + + return (_inputDeviceID != kAudioObjectUnknown); +} + +int32_t AudioMixerManagerMac::SetSpeakerVolume(uint32_t volume) { + RTC_LOG(LS_VERBOSE) << "AudioMixerManagerMac::SetSpeakerVolume(volume=" + << volume << ")"; + + MutexLock lock(&mutex_); + + if (_outputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + OSStatus err = noErr; + UInt32 size = 0; + bool success = false; + + // volume range is 0.0 - 1.0, convert from 0 -255 + const Float32 vol = (Float32)(volume / 255.0); + + RTC_DCHECK(vol <= 1.0 && vol >= 0.0); + + // Does the capture device have a master volume control? + // If so, use it exclusively. + AudioObjectPropertyAddress propertyAddress = { + kAudioDevicePropertyVolumeScalar, kAudioDevicePropertyScopeOutput, 0}; + Boolean isSettable = false; + err = AudioObjectIsPropertySettable(_outputDeviceID, &propertyAddress, + &isSettable); + if (err == noErr && isSettable) { + size = sizeof(vol); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectSetPropertyData( + _outputDeviceID, &propertyAddress, 0, NULL, size, &vol)); + + return 0; + } + + // Otherwise try to set each channel. + for (UInt32 i = 1; i <= _noOutputChannels; i++) { + propertyAddress.mElement = i; + isSettable = false; + err = AudioObjectIsPropertySettable(_outputDeviceID, &propertyAddress, + &isSettable); + if (err == noErr && isSettable) { + size = sizeof(vol); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectSetPropertyData( + _outputDeviceID, &propertyAddress, 0, NULL, size, &vol)); + } + success = true; + } + + if (!success) { + RTC_LOG(LS_WARNING) << "Unable to set a volume on any output channel"; + return -1; + } + + return 0; +} + +int32_t AudioMixerManagerMac::SpeakerVolume(uint32_t& volume) const { + if (_outputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + OSStatus err = noErr; + UInt32 size = 0; + unsigned int channels = 0; + Float32 channelVol = 0; + Float32 vol = 0; + + // Does the device have a master volume control? + // If so, use it exclusively. + AudioObjectPropertyAddress propertyAddress = { + kAudioDevicePropertyVolumeScalar, kAudioDevicePropertyScopeOutput, 0}; + Boolean hasProperty = + AudioObjectHasProperty(_outputDeviceID, &propertyAddress); + if (hasProperty) { + size = sizeof(vol); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectGetPropertyData( + _outputDeviceID, &propertyAddress, 0, NULL, &size, &vol)); + + // vol 0.0 to 1.0 -> convert to 0 - 255 + volume = static_cast<uint32_t>(vol * 255 + 0.5); + } else { + // Otherwise get the average volume across channels. + vol = 0; + for (UInt32 i = 1; i <= _noOutputChannels; i++) { + channelVol = 0; + propertyAddress.mElement = i; + hasProperty = AudioObjectHasProperty(_outputDeviceID, &propertyAddress); + if (hasProperty) { + size = sizeof(channelVol); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectGetPropertyData( + _outputDeviceID, &propertyAddress, 0, NULL, &size, &channelVol)); + + vol += channelVol; + channels++; + } + } + + if (channels == 0) { + RTC_LOG(LS_WARNING) << "Unable to get a volume on any channel"; + return -1; + } + + RTC_DCHECK_GT(channels, 0); + // vol 0.0 to 1.0 -> convert to 0 - 255 + volume = static_cast<uint32_t>(255 * vol / channels + 0.5); + } + + RTC_LOG(LS_VERBOSE) << "AudioMixerManagerMac::SpeakerVolume() => vol=" << vol; + + return 0; +} + +int32_t AudioMixerManagerMac::MaxSpeakerVolume(uint32_t& maxVolume) const { + if (_outputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + // volume range is 0.0 to 1.0 + // we convert that to 0 - 255 + maxVolume = 255; + + return 0; +} + +int32_t AudioMixerManagerMac::MinSpeakerVolume(uint32_t& minVolume) const { + if (_outputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + // volume range is 0.0 to 1.0 + // we convert that to 0 - 255 + minVolume = 0; + + return 0; +} + +int32_t AudioMixerManagerMac::SpeakerVolumeIsAvailable(bool& available) { + if (_outputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + OSStatus err = noErr; + + // Does the capture device have a master volume control? + // If so, use it exclusively. + AudioObjectPropertyAddress propertyAddress = { + kAudioDevicePropertyVolumeScalar, kAudioDevicePropertyScopeOutput, 0}; + Boolean isSettable = false; + err = AudioObjectIsPropertySettable(_outputDeviceID, &propertyAddress, + &isSettable); + if (err == noErr && isSettable) { + available = true; + return 0; + } + + // Otherwise try to set each channel. + for (UInt32 i = 1; i <= _noOutputChannels; i++) { + propertyAddress.mElement = i; + isSettable = false; + err = AudioObjectIsPropertySettable(_outputDeviceID, &propertyAddress, + &isSettable); + if (err != noErr || !isSettable) { + available = false; + RTC_LOG(LS_WARNING) << "Volume cannot be set for output channel " << i + << ", err=" << err; + return -1; + } + } + + available = true; + return 0; +} + +int32_t AudioMixerManagerMac::SpeakerMuteIsAvailable(bool& available) { + if (_outputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + OSStatus err = noErr; + + // Does the capture device have a master mute control? + // If so, use it exclusively. + AudioObjectPropertyAddress propertyAddress = { + kAudioDevicePropertyMute, kAudioDevicePropertyScopeOutput, 0}; + Boolean isSettable = false; + err = AudioObjectIsPropertySettable(_outputDeviceID, &propertyAddress, + &isSettable); + if (err == noErr && isSettable) { + available = true; + return 0; + } + + // Otherwise try to set each channel. + for (UInt32 i = 1; i <= _noOutputChannels; i++) { + propertyAddress.mElement = i; + isSettable = false; + err = AudioObjectIsPropertySettable(_outputDeviceID, &propertyAddress, + &isSettable); + if (err != noErr || !isSettable) { + available = false; + RTC_LOG(LS_WARNING) << "Mute cannot be set for output channel " << i + << ", err=" << err; + return -1; + } + } + + available = true; + return 0; +} + +int32_t AudioMixerManagerMac::SetSpeakerMute(bool enable) { + RTC_LOG(LS_VERBOSE) << "AudioMixerManagerMac::SetSpeakerMute(enable=" + << enable << ")"; + + MutexLock lock(&mutex_); + + if (_outputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + OSStatus err = noErr; + UInt32 size = 0; + UInt32 mute = enable ? 1 : 0; + bool success = false; + + // Does the render device have a master mute control? + // If so, use it exclusively. + AudioObjectPropertyAddress propertyAddress = { + kAudioDevicePropertyMute, kAudioDevicePropertyScopeOutput, 0}; + Boolean isSettable = false; + err = AudioObjectIsPropertySettable(_outputDeviceID, &propertyAddress, + &isSettable); + if (err == noErr && isSettable) { + size = sizeof(mute); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectSetPropertyData( + _outputDeviceID, &propertyAddress, 0, NULL, size, &mute)); + + return 0; + } + + // Otherwise try to set each channel. + for (UInt32 i = 1; i <= _noOutputChannels; i++) { + propertyAddress.mElement = i; + isSettable = false; + err = AudioObjectIsPropertySettable(_outputDeviceID, &propertyAddress, + &isSettable); + if (err == noErr && isSettable) { + size = sizeof(mute); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectSetPropertyData( + _outputDeviceID, &propertyAddress, 0, NULL, size, &mute)); + } + success = true; + } + + if (!success) { + RTC_LOG(LS_WARNING) << "Unable to set mute on any input channel"; + return -1; + } + + return 0; +} + +int32_t AudioMixerManagerMac::SpeakerMute(bool& enabled) const { + if (_outputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + OSStatus err = noErr; + UInt32 size = 0; + unsigned int channels = 0; + UInt32 channelMuted = 0; + UInt32 muted = 0; + + // Does the device have a master volume control? + // If so, use it exclusively. + AudioObjectPropertyAddress propertyAddress = { + kAudioDevicePropertyMute, kAudioDevicePropertyScopeOutput, 0}; + Boolean hasProperty = + AudioObjectHasProperty(_outputDeviceID, &propertyAddress); + if (hasProperty) { + size = sizeof(muted); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectGetPropertyData( + _outputDeviceID, &propertyAddress, 0, NULL, &size, &muted)); + + // 1 means muted + enabled = static_cast<bool>(muted); + } else { + // Otherwise check if all channels are muted. + for (UInt32 i = 1; i <= _noOutputChannels; i++) { + muted = 0; + propertyAddress.mElement = i; + hasProperty = AudioObjectHasProperty(_outputDeviceID, &propertyAddress); + if (hasProperty) { + size = sizeof(channelMuted); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectGetPropertyData( + _outputDeviceID, &propertyAddress, 0, NULL, &size, &channelMuted)); + + muted = (muted && channelMuted); + channels++; + } + } + + if (channels == 0) { + RTC_LOG(LS_WARNING) << "Unable to get mute for any channel"; + return -1; + } + + RTC_DCHECK_GT(channels, 0); + // 1 means muted + enabled = static_cast<bool>(muted); + } + + RTC_LOG(LS_VERBOSE) << "AudioMixerManagerMac::SpeakerMute() => enabled=" + << enabled; + + return 0; +} + +int32_t AudioMixerManagerMac::StereoPlayoutIsAvailable(bool& available) { + if (_outputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + available = (_noOutputChannels == 2); + return 0; +} + +int32_t AudioMixerManagerMac::StereoRecordingIsAvailable(bool& available) { + if (_inputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + available = (_noInputChannels == 2); + return 0; +} + +int32_t AudioMixerManagerMac::MicrophoneMuteIsAvailable(bool& available) { + if (_inputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + OSStatus err = noErr; + + // Does the capture device have a master mute control? + // If so, use it exclusively. + AudioObjectPropertyAddress propertyAddress = { + kAudioDevicePropertyMute, kAudioDevicePropertyScopeInput, 0}; + Boolean isSettable = false; + err = AudioObjectIsPropertySettable(_inputDeviceID, &propertyAddress, + &isSettable); + if (err == noErr && isSettable) { + available = true; + return 0; + } + + // Otherwise try to set each channel. + for (UInt32 i = 1; i <= _noInputChannels; i++) { + propertyAddress.mElement = i; + isSettable = false; + err = AudioObjectIsPropertySettable(_inputDeviceID, &propertyAddress, + &isSettable); + if (err != noErr || !isSettable) { + available = false; + RTC_LOG(LS_WARNING) << "Mute cannot be set for output channel " << i + << ", err=" << err; + return -1; + } + } + + available = true; + return 0; +} + +int32_t AudioMixerManagerMac::SetMicrophoneMute(bool enable) { + RTC_LOG(LS_VERBOSE) << "AudioMixerManagerMac::SetMicrophoneMute(enable=" + << enable << ")"; + + MutexLock lock(&mutex_); + + if (_inputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + OSStatus err = noErr; + UInt32 size = 0; + UInt32 mute = enable ? 1 : 0; + bool success = false; + + // Does the capture device have a master mute control? + // If so, use it exclusively. + AudioObjectPropertyAddress propertyAddress = { + kAudioDevicePropertyMute, kAudioDevicePropertyScopeInput, 0}; + Boolean isSettable = false; + err = AudioObjectIsPropertySettable(_inputDeviceID, &propertyAddress, + &isSettable); + if (err == noErr && isSettable) { + size = sizeof(mute); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectSetPropertyData( + _inputDeviceID, &propertyAddress, 0, NULL, size, &mute)); + + return 0; + } + + // Otherwise try to set each channel. + for (UInt32 i = 1; i <= _noInputChannels; i++) { + propertyAddress.mElement = i; + isSettable = false; + err = AudioObjectIsPropertySettable(_inputDeviceID, &propertyAddress, + &isSettable); + if (err == noErr && isSettable) { + size = sizeof(mute); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectSetPropertyData( + _inputDeviceID, &propertyAddress, 0, NULL, size, &mute)); + } + success = true; + } + + if (!success) { + RTC_LOG(LS_WARNING) << "Unable to set mute on any input channel"; + return -1; + } + + return 0; +} + +int32_t AudioMixerManagerMac::MicrophoneMute(bool& enabled) const { + if (_inputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + OSStatus err = noErr; + UInt32 size = 0; + unsigned int channels = 0; + UInt32 channelMuted = 0; + UInt32 muted = 0; + + // Does the device have a master volume control? + // If so, use it exclusively. + AudioObjectPropertyAddress propertyAddress = { + kAudioDevicePropertyMute, kAudioDevicePropertyScopeInput, 0}; + Boolean hasProperty = + AudioObjectHasProperty(_inputDeviceID, &propertyAddress); + if (hasProperty) { + size = sizeof(muted); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectGetPropertyData( + _inputDeviceID, &propertyAddress, 0, NULL, &size, &muted)); + + // 1 means muted + enabled = static_cast<bool>(muted); + } else { + // Otherwise check if all channels are muted. + for (UInt32 i = 1; i <= _noInputChannels; i++) { + muted = 0; + propertyAddress.mElement = i; + hasProperty = AudioObjectHasProperty(_inputDeviceID, &propertyAddress); + if (hasProperty) { + size = sizeof(channelMuted); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectGetPropertyData( + _inputDeviceID, &propertyAddress, 0, NULL, &size, &channelMuted)); + + muted = (muted && channelMuted); + channels++; + } + } + + if (channels == 0) { + RTC_LOG(LS_WARNING) << "Unable to get mute for any channel"; + return -1; + } + + RTC_DCHECK_GT(channels, 0); + // 1 means muted + enabled = static_cast<bool>(muted); + } + + RTC_LOG(LS_VERBOSE) << "AudioMixerManagerMac::MicrophoneMute() => enabled=" + << enabled; + + return 0; +} + +int32_t AudioMixerManagerMac::MicrophoneVolumeIsAvailable(bool& available) { + if (_inputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + OSStatus err = noErr; + + // Does the capture device have a master volume control? + // If so, use it exclusively. + AudioObjectPropertyAddress propertyAddress = { + kAudioDevicePropertyVolumeScalar, kAudioDevicePropertyScopeInput, 0}; + Boolean isSettable = false; + err = AudioObjectIsPropertySettable(_inputDeviceID, &propertyAddress, + &isSettable); + if (err == noErr && isSettable) { + available = true; + return 0; + } + + // Otherwise try to set each channel. + for (UInt32 i = 1; i <= _noInputChannels; i++) { + propertyAddress.mElement = i; + isSettable = false; + err = AudioObjectIsPropertySettable(_inputDeviceID, &propertyAddress, + &isSettable); + if (err != noErr || !isSettable) { + available = false; + RTC_LOG(LS_WARNING) << "Volume cannot be set for input channel " << i + << ", err=" << err; + return -1; + } + } + + available = true; + return 0; +} + +int32_t AudioMixerManagerMac::SetMicrophoneVolume(uint32_t volume) { + RTC_LOG(LS_VERBOSE) << "AudioMixerManagerMac::SetMicrophoneVolume(volume=" + << volume << ")"; + + MutexLock lock(&mutex_); + + if (_inputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + OSStatus err = noErr; + UInt32 size = 0; + bool success = false; + + // volume range is 0.0 - 1.0, convert from 0 - 255 + const Float32 vol = (Float32)(volume / 255.0); + + RTC_DCHECK(vol <= 1.0 && vol >= 0.0); + + // Does the capture device have a master volume control? + // If so, use it exclusively. + AudioObjectPropertyAddress propertyAddress = { + kAudioDevicePropertyVolumeScalar, kAudioDevicePropertyScopeInput, 0}; + Boolean isSettable = false; + err = AudioObjectIsPropertySettable(_inputDeviceID, &propertyAddress, + &isSettable); + if (err == noErr && isSettable) { + size = sizeof(vol); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectSetPropertyData( + _inputDeviceID, &propertyAddress, 0, NULL, size, &vol)); + + return 0; + } + + // Otherwise try to set each channel. + for (UInt32 i = 1; i <= _noInputChannels; i++) { + propertyAddress.mElement = i; + isSettable = false; + err = AudioObjectIsPropertySettable(_inputDeviceID, &propertyAddress, + &isSettable); + if (err == noErr && isSettable) { + size = sizeof(vol); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectSetPropertyData( + _inputDeviceID, &propertyAddress, 0, NULL, size, &vol)); + } + success = true; + } + + if (!success) { + RTC_LOG(LS_WARNING) << "Unable to set a level on any input channel"; + return -1; + } + + return 0; +} + +int32_t AudioMixerManagerMac::MicrophoneVolume(uint32_t& volume) const { + if (_inputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + OSStatus err = noErr; + UInt32 size = 0; + unsigned int channels = 0; + Float32 channelVol = 0; + Float32 volFloat32 = 0; + + // Does the device have a master volume control? + // If so, use it exclusively. + AudioObjectPropertyAddress propertyAddress = { + kAudioDevicePropertyVolumeScalar, kAudioDevicePropertyScopeInput, 0}; + Boolean hasProperty = + AudioObjectHasProperty(_inputDeviceID, &propertyAddress); + if (hasProperty) { + size = sizeof(volFloat32); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectGetPropertyData( + _inputDeviceID, &propertyAddress, 0, NULL, &size, &volFloat32)); + + // vol 0.0 to 1.0 -> convert to 0 - 255 + volume = static_cast<uint32_t>(volFloat32 * 255 + 0.5); + } else { + // Otherwise get the average volume across channels. + volFloat32 = 0; + for (UInt32 i = 1; i <= _noInputChannels; i++) { + channelVol = 0; + propertyAddress.mElement = i; + hasProperty = AudioObjectHasProperty(_inputDeviceID, &propertyAddress); + if (hasProperty) { + size = sizeof(channelVol); + WEBRTC_CA_RETURN_ON_ERR(AudioObjectGetPropertyData( + _inputDeviceID, &propertyAddress, 0, NULL, &size, &channelVol)); + + volFloat32 += channelVol; + channels++; + } + } + + if (channels == 0) { + RTC_LOG(LS_WARNING) << "Unable to get a level on any channel"; + return -1; + } + + RTC_DCHECK_GT(channels, 0); + // vol 0.0 to 1.0 -> convert to 0 - 255 + volume = static_cast<uint32_t>(255 * volFloat32 / channels + 0.5); + } + + RTC_LOG(LS_VERBOSE) << "AudioMixerManagerMac::MicrophoneVolume() => vol=" + << volume; + + return 0; +} + +int32_t AudioMixerManagerMac::MaxMicrophoneVolume(uint32_t& maxVolume) const { + if (_inputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + // volume range is 0.0 to 1.0 + // we convert that to 0 - 255 + maxVolume = 255; + + return 0; +} + +int32_t AudioMixerManagerMac::MinMicrophoneVolume(uint32_t& minVolume) const { + if (_inputDeviceID == kAudioObjectUnknown) { + RTC_LOG(LS_WARNING) << "device ID has not been set"; + return -1; + } + + // volume range is 0.0 to 1.0 + // we convert that to 0 - 10 + minVolume = 0; + + return 0; +} + +// ============================================================================ +// Private Methods +// ============================================================================ + +// CoreAudio errors are best interpreted as four character strings. +void AudioMixerManagerMac::logCAMsg(const rtc::LoggingSeverity sev, + const char* msg, + const char* err) { + RTC_DCHECK(msg != NULL); + RTC_DCHECK(err != NULL); + RTC_DCHECK(sev == rtc::LS_ERROR || sev == rtc::LS_WARNING); + +#ifdef WEBRTC_ARCH_BIG_ENDIAN + switch (sev) { + case rtc::LS_ERROR: + RTC_LOG(LS_ERROR) << msg << ": " << err[0] << err[1] << err[2] << err[3]; + break; + case rtc::LS_WARNING: + RTC_LOG(LS_WARNING) << msg << ": " << err[0] << err[1] << err[2] + << err[3]; + break; + default: + break; + } +#else + // We need to flip the characters in this case. + switch (sev) { + case rtc::LS_ERROR: + RTC_LOG(LS_ERROR) << msg << ": " << err[3] << err[2] << err[1] << err[0]; + break; + case rtc::LS_WARNING: + RTC_LOG(LS_WARNING) << msg << ": " << err[3] << err[2] << err[1] + << err[0]; + break; + default: + break; + } +#endif +} + +} // namespace webrtc +// EOF |