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https://github.com/mpv-player/mpv.git
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de4f997752
Previously we let the user use the audio device ID, but this is not persistent and can change when plugging in new devices. That of course made it quite worthless for storing it as a user setting for GUIs, or for user scripts. In theory getting the kAudioDevicePropertyDeviceUID can fail but it doesn't on any of my devices, so I'm leaving the error reporting quite high and see if someone complains.
104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv 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 2 of the License, or
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* (at your option) any later version.
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*
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* mpv 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 along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Abstractions on the CoreAudio API to make property setting/getting suck les
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*/
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#include "audio/out/ao_coreaudio_properties.h"
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#include "audio/out/ao_coreaudio_utils.h"
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#include "talloc.h"
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OSStatus ca_get(AudioObjectID id, ca_scope scope, ca_sel selector,
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uint32_t size, void *data)
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{
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AudioObjectPropertyAddress p_addr = (AudioObjectPropertyAddress) {
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.mSelector = selector,
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.mScope = scope,
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.mElement = kAudioObjectPropertyElementMaster,
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};
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return AudioObjectGetPropertyData(id, &p_addr, 0, NULL, &size, data);
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}
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OSStatus ca_set(AudioObjectID id, ca_scope scope, ca_sel selector,
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uint32_t size, void *data)
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{
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AudioObjectPropertyAddress p_addr = (AudioObjectPropertyAddress) {
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.mSelector = selector,
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.mScope = scope,
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.mElement = kAudioObjectPropertyElementMaster,
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};
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return AudioObjectSetPropertyData(id, &p_addr, 0, NULL, size, data);
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}
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OSStatus ca_get_ary(AudioObjectID id, ca_scope scope, ca_sel selector,
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uint32_t element_size, void **data, size_t *elements)
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{
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OSStatus err;
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uint32_t p_size;
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AudioObjectPropertyAddress p_addr = (AudioObjectPropertyAddress) {
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.mSelector = selector,
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.mScope = scope,
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.mElement = kAudioObjectPropertyElementMaster,
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};
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err = AudioObjectGetPropertyDataSize(id, &p_addr, 0, NULL, &p_size);
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CHECK_CA_ERROR_SILENT_L(coreaudio_error);
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*data = talloc_zero_size(NULL, p_size);
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*elements = p_size / element_size;
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err = ca_get(id, scope, selector, p_size, *data);
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CHECK_CA_ERROR_SILENT_L(coreaudio_error_free);
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return err;
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coreaudio_error_free:
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free(*data);
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coreaudio_error:
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return err;
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}
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OSStatus ca_get_str(AudioObjectID id, ca_scope scope, ca_sel selector,
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char **data)
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{
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CFStringRef string;
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OSStatus err =
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ca_get(id, scope, selector, sizeof(CFStringRef), (void **)&string);
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CHECK_CA_ERROR_SILENT_L(coreaudio_error);
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*data = cfstr_get_cstr(string);
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CFRelease(string);
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coreaudio_error:
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return err;
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}
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Boolean ca_settable(AudioObjectID id, ca_scope scope, ca_sel selector,
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Boolean *data)
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{
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AudioObjectPropertyAddress p_addr = (AudioObjectPropertyAddress) {
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.mSelector = selector,
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.mScope = kAudioObjectPropertyScopeGlobal,
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.mElement = kAudioObjectPropertyElementMaster,
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};
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return AudioObjectIsPropertySettable(id, &p_addr, data);
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}
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