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/*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Abstractions on the CoreAudio API to make property setting/getting suck les
*/
#include "audio/out/ao_coreaudio_properties.h"
#include "audio/out/ao_coreaudio_utils.h"
#include "talloc.h"
OSStatus ca_get(AudioObjectID id, ca_scope scope, ca_sel selector,
uint32_t size, void *data)
{
AudioObjectPropertyAddress p_addr = (AudioObjectPropertyAddress) {
.mSelector = selector,
.mScope = scope,
.mElement = kAudioObjectPropertyElementMaster,
};
return AudioObjectGetPropertyData(id, &p_addr, 0, NULL, &size, data);
}
OSStatus ca_set(AudioObjectID id, ca_scope scope, ca_sel selector,
uint32_t size, void *data)
{
AudioObjectPropertyAddress p_addr = (AudioObjectPropertyAddress) {
.mSelector = selector,
.mScope = scope,
.mElement = kAudioObjectPropertyElementMaster,
};
return AudioObjectSetPropertyData(id, &p_addr, 0, NULL, size, data);
}
OSStatus ca_get_ary(AudioObjectID id, ca_scope scope, ca_sel selector,
uint32_t element_size, void **data, size_t *elements)
{
OSStatus err;
uint32_t p_size;
AudioObjectPropertyAddress p_addr = (AudioObjectPropertyAddress) {
.mSelector = selector,
.mScope = scope,
.mElement = kAudioObjectPropertyElementMaster,
};
err = AudioObjectGetPropertyDataSize(id, &p_addr, 0, NULL, &p_size);
CHECK_CA_ERROR_SILENT_L(coreaudio_error);
*data = talloc_size(NULL, p_size);
*elements = p_size / element_size;
err = ca_get(id, scope, selector, p_size, *data);
CHECK_CA_ERROR_SILENT_L(coreaudio_error_free);
return err;
coreaudio_error_free:
free(*data);
coreaudio_error:
return err;
}
OSStatus ca_get_str(AudioObjectID id, ca_scope scope, ca_sel selector,
char **data)
{
CFStringRef string;
OSStatus err =
ca_get(id, scope, selector, sizeof(CFStringRef), (void **)&string);
CHECK_CA_ERROR_SILENT_L(coreaudio_error);
CFIndex size =
CFStringGetMaximumSizeForEncoding(
CFStringGetLength(string), CA_CFSTR_ENCODING) + 1;
*data = talloc_size(NULL, size);
CFStringGetCString(string, *data, size, CA_CFSTR_ENCODING);
CFRelease(string);
coreaudio_error:
return err;
}
Boolean ca_settable(AudioObjectID id, ca_scope scope, ca_sel selector,
Boolean *data)
{
AudioObjectPropertyAddress p_addr = (AudioObjectPropertyAddress) {
.mSelector = selector,
.mScope = kAudioObjectPropertyScopeGlobal,
.mElement = kAudioObjectPropertyElementMaster,
};
return AudioObjectIsPropertySettable(id, &p_addr, data);
}
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