1 /*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 #ifndef AUDIO_POLICY_HELPER_H_
17 #define AUDIO_POLICY_HELPER_H_
18
19 #include <system/audio.h>
20
21 // TODO: fix this among dependencies
22 __attribute__((unused))
audio_attributes_to_stream_type(const audio_attributes_t * attr)23 static audio_stream_type_t audio_attributes_to_stream_type(const audio_attributes_t *attr)
24 {
25 // flags to stream type mapping
26 if ((attr->flags & AUDIO_FLAG_AUDIBILITY_ENFORCED) == AUDIO_FLAG_AUDIBILITY_ENFORCED) {
27 return AUDIO_STREAM_ENFORCED_AUDIBLE;
28 }
29 if ((attr->flags & AUDIO_FLAG_SCO) == AUDIO_FLAG_SCO) {
30 return AUDIO_STREAM_BLUETOOTH_SCO;
31 }
32
33 // usage to stream type mapping
34 switch (attr->usage) {
35 case AUDIO_USAGE_MEDIA:
36 case AUDIO_USAGE_GAME:
37 case AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE:
38 case AUDIO_USAGE_ASSISTANT:
39 return AUDIO_STREAM_MUSIC;
40 case AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY:
41 return AUDIO_STREAM_ACCESSIBILITY;
42 case AUDIO_USAGE_ASSISTANCE_SONIFICATION:
43 return AUDIO_STREAM_SYSTEM;
44 case AUDIO_USAGE_VOICE_COMMUNICATION:
45 return AUDIO_STREAM_VOICE_CALL;
46
47 case AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING:
48 return AUDIO_STREAM_DTMF;
49
50 case AUDIO_USAGE_ALARM:
51 return AUDIO_STREAM_ALARM;
52 case AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE:
53 return AUDIO_STREAM_RING;
54
55 case AUDIO_USAGE_NOTIFICATION:
56 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST:
57 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT:
58 case AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED:
59 case AUDIO_USAGE_NOTIFICATION_EVENT:
60 return AUDIO_STREAM_NOTIFICATION;
61
62 case AUDIO_USAGE_UNKNOWN:
63 default:
64 return AUDIO_STREAM_MUSIC;
65 }
66 }
67
68 // TODO: fix this among dependencies
69 __attribute__((unused))
stream_type_to_audio_attributes(audio_stream_type_t streamType,audio_attributes_t * attr)70 static void stream_type_to_audio_attributes(audio_stream_type_t streamType,
71 audio_attributes_t *attr) {
72 memset(attr, 0, sizeof(audio_attributes_t));
73
74 switch (streamType) {
75 case AUDIO_STREAM_DEFAULT:
76 case AUDIO_STREAM_MUSIC:
77 attr->content_type = AUDIO_CONTENT_TYPE_MUSIC;
78 attr->usage = AUDIO_USAGE_MEDIA;
79 break;
80 case AUDIO_STREAM_VOICE_CALL:
81 attr->content_type = AUDIO_CONTENT_TYPE_SPEECH;
82 attr->usage = AUDIO_USAGE_VOICE_COMMUNICATION;
83 break;
84 case AUDIO_STREAM_ENFORCED_AUDIBLE:
85 attr->flags |= AUDIO_FLAG_AUDIBILITY_ENFORCED;
86 // intended fall through, attributes in common with STREAM_SYSTEM
87 case AUDIO_STREAM_SYSTEM:
88 attr->content_type = AUDIO_CONTENT_TYPE_SONIFICATION;
89 attr->usage = AUDIO_USAGE_ASSISTANCE_SONIFICATION;
90 break;
91 case AUDIO_STREAM_RING:
92 attr->content_type = AUDIO_CONTENT_TYPE_SONIFICATION;
93 attr->usage = AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE;
94 break;
95 case AUDIO_STREAM_ALARM:
96 attr->content_type = AUDIO_CONTENT_TYPE_SONIFICATION;
97 attr->usage = AUDIO_USAGE_ALARM;
98 break;
99 case AUDIO_STREAM_NOTIFICATION:
100 attr->content_type = AUDIO_CONTENT_TYPE_SONIFICATION;
101 attr->usage = AUDIO_USAGE_NOTIFICATION;
102 break;
103 case AUDIO_STREAM_BLUETOOTH_SCO:
104 attr->content_type = AUDIO_CONTENT_TYPE_SPEECH;
105 attr->usage = AUDIO_USAGE_VOICE_COMMUNICATION;
106 attr->flags |= AUDIO_FLAG_SCO;
107 break;
108 case AUDIO_STREAM_DTMF:
109 attr->content_type = AUDIO_CONTENT_TYPE_SONIFICATION;
110 attr->usage = AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING;
111 break;
112 case AUDIO_STREAM_TTS:
113 attr->content_type = AUDIO_CONTENT_TYPE_SPEECH;
114 attr->usage = AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY;
115 break;
116 default:
117 ALOGE("invalid stream type %d when converting to attributes", streamType);
118 }
119 }
120
121 #endif //AUDIO_POLICY_HELPER_H_
122