1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
/*
* 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"
OSStatus ca_get(AudioObjectID id, AudioObjectPropertySelector selector,
uint32_t size, void *data)
{
AudioObjectPropertyAddress p_addr = (AudioObjectPropertyAddress) {
.mSelector = selector,
.mScope = kAudioObjectPropertyScopeGlobal,
.mElement = kAudioObjectPropertyElementMaster,
};
return AudioObjectGetPropertyData(id, &p_addr, 0, NULL, &size, data);
}
uint32_t GetAudioPropertyArray(AudioObjectID id,
AudioObjectPropertySelector selector,
AudioObjectPropertyScope scope, void **data)
{
OSStatus err;
AudioObjectPropertyAddress p_addr;
UInt32 p_size;
p_addr.mSelector = selector;
p_addr.mScope = scope;
p_addr.mElement = kAudioObjectPropertyElementMaster;
err = AudioObjectGetPropertyDataSize(id, &p_addr, 0, NULL, &p_size);
CHECK_CA_ERROR("Can't fetch property size");
*data = malloc(p_size);
err = AudioObjectGetPropertyData(id, &p_addr, 0, NULL, &p_size, *data);
CHECK_CA_ERROR_L(coreaudio_error_free, "Can't fetch property data %s");
return p_size;
coreaudio_error_free:
free(*data);
coreaudio_error:
return 0;
}
uint32_t GetGlobalAudioPropertyArray(AudioObjectID id,
AudioObjectPropertySelector selector,
void **data)
{
return GetAudioPropertyArray(id, selector, kAudioObjectPropertyScopeGlobal,
data);
}
OSStatus GetAudioPropertyString(AudioObjectID id,
AudioObjectPropertySelector selector,
char **data)
{
OSStatus err;
AudioObjectPropertyAddress p_addr;
UInt32 p_size = sizeof(CFStringRef);
CFStringRef string;
p_addr.mSelector = selector;
p_addr.mScope = kAudioObjectPropertyScopeGlobal;
p_addr.mElement = kAudioObjectPropertyElementMaster;
err = AudioObjectGetPropertyData(id, &p_addr, 0, NULL, &p_size, &string);
CHECK_CA_ERROR("Can't fetch array property");
CFIndex size =
CFStringGetMaximumSizeForEncoding(
CFStringGetLength(string), CA_CFSTR_ENCODING) + 1;
*data = malloc(size);
CFStringGetCString(string, *data, size, CA_CFSTR_ENCODING);
CFRelease(string);
coreaudio_error:
return err;
}
OSStatus SetAudioProperty(AudioObjectID id,
AudioObjectPropertySelector selector,
uint32_t size, void *data)
{
AudioObjectPropertyAddress p_addr;
p_addr.mSelector = selector;
p_addr.mScope = kAudioObjectPropertyScopeGlobal;
p_addr.mElement = kAudioObjectPropertyElementMaster;
return AudioObjectSetPropertyData(id, &p_addr, 0, NULL,
size, data);
}
Boolean IsAudioPropertySettable(AudioObjectID id,
AudioObjectPropertySelector selector,
Boolean *data)
{
AudioObjectPropertyAddress p_addr;
p_addr.mSelector = selector;
p_addr.mScope = kAudioObjectPropertyScopeGlobal;
p_addr.mElement = kAudioObjectPropertyElementMaster;
return AudioObjectIsPropertySettable(id, &p_addr, data);
}
|
