| /* |
| * Copyright (C) 2014 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "AudioHardwareListenerMac.h" |
| |
| #if PLATFORM(MAC) |
| |
| #include <algorithm> |
| |
| enum { |
| kAudioHardwarePropertyProcessIsRunning = 'prun' |
| }; |
| |
| namespace WebCore { |
| |
| static AudioHardwareActivityType isAudioHardwareProcessRunning() |
| { |
| AudioObjectPropertyAddress propertyAddress = { |
| kAudioHardwarePropertyProcessIsRunning, |
| kAudioObjectPropertyScopeGlobal, |
| #if HAVE(AUDIO_OBJECT_PROPERTY_ELEMENT_MAIN) |
| kAudioObjectPropertyElementMain |
| #else |
| ALLOW_DEPRECATED_DECLARATIONS_BEGIN |
| kAudioObjectPropertyElementMaster |
| ALLOW_DEPRECATED_DECLARATIONS_END |
| #endif |
| }; |
| |
| if (!AudioObjectHasProperty(kAudioObjectSystemObject, &propertyAddress)) |
| return AudioHardwareActivityType::Unknown; |
| |
| UInt32 result = 0; |
| UInt32 resultSize = sizeof(UInt32); |
| |
| if (AudioObjectGetPropertyData(kAudioObjectSystemObject, &propertyAddress, 0, 0, &resultSize, &result)) |
| return AudioHardwareActivityType::Unknown; |
| |
| if (result) |
| return AudioHardwareActivityType::IsActive; |
| else |
| return AudioHardwareActivityType::IsInactive; |
| } |
| |
| static AudioHardwareListener::BufferSizeRange currentDeviceSupportedBufferSizes() |
| { |
| AudioDeviceID deviceID = kAudioDeviceUnknown; |
| UInt32 descriptorSize = sizeof(deviceID); |
| AudioObjectPropertyAddress defaultOutputDeviceDescriptor = { |
| kAudioHardwarePropertyDefaultOutputDevice, |
| kAudioObjectPropertyScopeGlobal, |
| #if HAVE(AUDIO_OBJECT_PROPERTY_ELEMENT_MAIN) |
| kAudioObjectPropertyElementMain |
| #else |
| ALLOW_DEPRECATED_DECLARATIONS_BEGIN |
| kAudioObjectPropertyElementMaster |
| ALLOW_DEPRECATED_DECLARATIONS_END |
| #endif |
| }; |
| |
| if (AudioObjectGetPropertyData(kAudioObjectSystemObject, &defaultOutputDeviceDescriptor, 0, 0, &descriptorSize, (void*)&deviceID)) |
| return { }; |
| |
| AudioValueRange bufferSizes; |
| descriptorSize = sizeof(bufferSizes); |
| |
| AudioObjectPropertyAddress bufferSizeDescriptor = { |
| kAudioDevicePropertyBufferFrameSizeRange, |
| kAudioObjectPropertyScopeGlobal, |
| #if HAVE(AUDIO_OBJECT_PROPERTY_ELEMENT_MAIN) |
| kAudioObjectPropertyElementMain |
| #else |
| ALLOW_DEPRECATED_DECLARATIONS_BEGIN |
| kAudioObjectPropertyElementMaster, |
| ALLOW_DEPRECATED_DECLARATIONS_END |
| #endif |
| }; |
| |
| if (AudioObjectGetPropertyData(deviceID, &bufferSizeDescriptor, 0, 0, &descriptorSize, &bufferSizes)) |
| return { }; |
| |
| return { static_cast<size_t>(bufferSizes.mMinimum), static_cast<size_t>(bufferSizes.mMaximum) }; |
| } |
| |
| |
| static const AudioObjectPropertyAddress& processIsRunningPropertyDescriptor() |
| { |
| static const AudioObjectPropertyAddress processIsRunningProperty = { |
| kAudioHardwarePropertyProcessIsRunning, |
| kAudioObjectPropertyScopeGlobal, |
| #if HAVE(AUDIO_OBJECT_PROPERTY_ELEMENT_MAIN) |
| kAudioObjectPropertyElementMain |
| #else |
| ALLOW_DEPRECATED_DECLARATIONS_BEGIN |
| kAudioObjectPropertyElementMaster |
| ALLOW_DEPRECATED_DECLARATIONS_END |
| #endif |
| }; |
| |
| return processIsRunningProperty; |
| } |
| |
| static const AudioObjectPropertyAddress& outputDevicePropertyDescriptor() |
| { |
| static const AudioObjectPropertyAddress outputDeviceProperty = { |
| kAudioHardwarePropertyDefaultOutputDevice, |
| kAudioObjectPropertyScopeGlobal, |
| #if HAVE(AUDIO_OBJECT_PROPERTY_ELEMENT_MAIN) |
| kAudioObjectPropertyElementMain |
| #else |
| ALLOW_DEPRECATED_DECLARATIONS_BEGIN |
| kAudioObjectPropertyElementMaster |
| ALLOW_DEPRECATED_DECLARATIONS_END |
| #endif |
| }; |
| |
| return outputDeviceProperty; |
| } |
| |
| Ref<AudioHardwareListenerMac> AudioHardwareListenerMac::create(Client& client) |
| { |
| return adoptRef(*new AudioHardwareListenerMac(client)); |
| } |
| |
| AudioHardwareListenerMac::AudioHardwareListenerMac(Client& client) |
| : AudioHardwareListener(client) |
| { |
| setHardwareActivity(isAudioHardwareProcessRunning()); |
| setSupportedBufferSizes(currentDeviceSupportedBufferSizes()); |
| |
| WeakPtr weakThis { *this }; |
| m_block = Block_copy(^(UInt32 count, const AudioObjectPropertyAddress properties[]) { |
| if (weakThis) |
| weakThis->propertyChanged(count, properties); |
| }); |
| |
| AudioObjectAddPropertyListenerBlock(kAudioObjectSystemObject, &processIsRunningPropertyDescriptor(), dispatch_get_main_queue(), m_block); |
| AudioObjectAddPropertyListenerBlock(kAudioObjectSystemObject, &outputDevicePropertyDescriptor(), dispatch_get_main_queue(), m_block); |
| } |
| |
| AudioHardwareListenerMac::~AudioHardwareListenerMac() |
| { |
| AudioObjectRemovePropertyListenerBlock(kAudioObjectSystemObject, &processIsRunningPropertyDescriptor(), dispatch_get_main_queue(), m_block); |
| AudioObjectRemovePropertyListenerBlock(kAudioObjectSystemObject, &outputDevicePropertyDescriptor(), dispatch_get_main_queue(), m_block); |
| Block_release(m_block); |
| } |
| |
| void AudioHardwareListenerMac::propertyChanged(UInt32 propertyCount, const AudioObjectPropertyAddress properties[]) |
| { |
| const AudioObjectPropertyAddress& deviceRunning = processIsRunningPropertyDescriptor(); |
| const AudioObjectPropertyAddress& outputDevice = outputDevicePropertyDescriptor(); |
| |
| for (UInt32 i = 0; i < propertyCount; ++i) { |
| const AudioObjectPropertyAddress& property = properties[i]; |
| |
| if (!memcmp(&property, &deviceRunning, sizeof(AudioObjectPropertyAddress))) |
| processIsRunningChanged(); |
| else if (!memcmp(&property, &outputDevice, sizeof(AudioObjectPropertyAddress))) |
| outputDeviceChanged(); |
| } |
| } |
| |
| void AudioHardwareListenerMac::processIsRunningChanged() |
| { |
| AudioHardwareActivityType activity = isAudioHardwareProcessRunning(); |
| if (activity == hardwareActivity()) |
| return; |
| setHardwareActivity(activity); |
| |
| if (hardwareActivity() == AudioHardwareActivityType::IsActive) |
| m_client.audioHardwareDidBecomeActive(); |
| else if (hardwareActivity() == AudioHardwareActivityType::IsInactive) |
| m_client.audioHardwareDidBecomeInactive(); |
| } |
| |
| void AudioHardwareListenerMac::outputDeviceChanged() |
| { |
| setSupportedBufferSizes(currentDeviceSupportedBufferSizes()); |
| m_client.audioOutputDeviceChanged(); |
| } |
| |
| } |
| |
| #endif |