mirror of
https://github.com/mpv-player/mpv
synced 2024-12-24 15:52:25 +00:00
109 lines
3.3 KiB
C
109 lines
3.3 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_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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CFIndex size =
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CFStringGetMaximumSizeForEncoding(
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CFStringGetLength(string), CA_CFSTR_ENCODING) + 1;
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*data = talloc_size(NULL, size);
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CFStringGetCString(string, *data, size, CA_CFSTR_ENCODING);
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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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