114 lines
3.5 KiB
C++
114 lines
3.5 KiB
C++
/*
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* Strawberry Music Player
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* This file was part of Clementine.
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* Copyright 2014, David Sansome <me@davidsansome.com>
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*
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* Strawberry is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Strawberry is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "config.h"
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#include <memory>
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#include <CoreAudio/AudioHardware.h>
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#include <QList>
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#include <QString>
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#include "core/logging.h"
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#include "core/scoped_cftyperef.h"
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#include "macosdevicefinder.h"
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namespace {
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template <typename T>
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std::unique_ptr<T> GetProperty(const AudioDeviceID &device_id, const AudioObjectPropertyAddress &address, UInt32 *size_bytes_out = nullptr) {
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UInt32 size_bytes = 0;
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OSStatus status = AudioObjectGetPropertyDataSize(device_id, &address, 0, NULL, &size_bytes);
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if (status != kAudioHardwareNoError) {
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qLog(Warning) << "AudioObjectGetPropertyDataSize failed:" << status;
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return std::unique_ptr<T>();
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}
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std::unique_ptr<T> ret(reinterpret_cast<T*>(malloc(size_bytes)));
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status = AudioObjectGetPropertyData(device_id, &address, 0, NULL, &size_bytes, ret.get());
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if (status != kAudioHardwareNoError) {
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qLog(Warning) << "AudioObjectGetPropertyData failed:" << status;
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return std::unique_ptr<T>();
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}
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if (size_bytes_out) {
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*size_bytes_out = size_bytes;
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}
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return ret;
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}
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} // namespace
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MacOsDeviceFinder::MacOsDeviceFinder() : DeviceFinder("osxaudio", { "osxaudio", "osx", "osxaudiosink" }) {}
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QList<DeviceFinder::Device> MacOsDeviceFinder::ListDevices() {
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QList<Device> ret;
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AudioObjectPropertyAddress address = {
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kAudioHardwarePropertyDevices,
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kAudioObjectPropertyScopeGlobal,
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kAudioObjectPropertyElementMaster
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};
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UInt32 device_size_bytes = 0;
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std::unique_ptr<AudioDeviceID> devices = GetProperty<AudioDeviceID>(kAudioObjectSystemObject, address, &device_size_bytes);
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if (!devices) {
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return ret;
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}
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const UInt32 device_count = device_size_bytes / sizeof(AudioDeviceID);
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address.mScope = kAudioDevicePropertyScopeOutput;
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for (UInt32 i = 0; i < device_count; ++i) {
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const AudioDeviceID id = devices.get()[i];
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// Query device name
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address.mSelector = kAudioDevicePropertyDeviceNameCFString;
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std::unique_ptr<CFStringRef> device_name = GetProperty<CFStringRef>(id, address);
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ScopedCFTypeRef<CFStringRef> scoped_device_name(*device_name.get());
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if (!device_name) {
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continue;
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}
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// Determine if the device is an output device (it is an output device if it has output channels)
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address.mSelector = kAudioDevicePropertyStreamConfiguration;
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std::unique_ptr<AudioBufferList> buffer_list = GetProperty<AudioBufferList>(id, address);
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if (!buffer_list.get() || buffer_list->mNumberBuffers == 0) {
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continue;
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}
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Device dev;
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dev.value = id;
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dev.description = QString::fromUtf8(CFStringGetCStringPtr(*device_name, CFStringGetSystemEncoding()));
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if (dev.description.isEmpty()) dev.description = QString("Unknown device " + dev.value.toString());
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dev.iconname = GuessIconName(dev.description);
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ret.append(dev);
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}
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return ret;
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}
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