108 lines
3.6 KiB
C++
108 lines
3.6 KiB
C++
/* This file is part of Clementine.
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Copyright 2014, David Sansome <me@davidsansome.com>
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Clementine 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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Clementine 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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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "osxdevicefinder.h"
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#include <CoreAudio/AudioHardware.h>
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#include <memory>
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#include "core/logging.h"
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#include "core/scoped_cftyperef.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,
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const AudioObjectPropertyAddress& address,
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UInt32* size_bytes_out = nullptr) {
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UInt32 size_bytes = 0;
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OSStatus status =
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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,
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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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OsxDeviceFinder::OsxDeviceFinder() : DeviceFinder("osxaudiosink") {}
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QList<DeviceFinder::Device> OsxDeviceFinder::ListDevices() {
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QList<Device> ret;
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AudioObjectPropertyAddress address = {kAudioHardwarePropertyDevices,
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kAudioObjectPropertyScopeGlobal,
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kAudioObjectPropertyElementMaster};
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UInt32 device_size_bytes = 0;
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std::unique_ptr<AudioDeviceID> devices = GetProperty<AudioDeviceID>(
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kAudioObjectSystemObject, address, &device_size_bytes);
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if (!devices.get()) {
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return ret;
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}
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const int 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 =
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GetProperty<CFStringRef>(id, address);
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ScopedCFTypeRef<CFStringRef> scoped_device_name(*device_name.get());
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if (!device_name.get()) {
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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
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// it has output channels)
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address.mSelector = kAudioDevicePropertyStreamConfiguration;
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std::unique_ptr<AudioBufferList> buffer_list =
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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.description = QString::fromUtf8(
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CFStringGetCStringPtr(*device_name, CFStringGetSystemEncoding()));
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if (dev.description.isEmpty()) dev.description = QString("Unknown device");
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dev.device_property_value = id;
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dev.icon_name = 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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