1/*
2 * Copyright (C) 2011 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
17
18#ifndef ANDROID_AUDIO_POLICY_CORE_H
19#define ANDROID_AUDIO_POLICY_CORE_H
20
21#include <stdint.h>
22#include <sys/cdefs.h>
23#include <sys/types.h>
24
25#include <cutils/bitops.h>
26
27__BEGIN_DECLS
28
29/* The enums were moved here mostly from
30 * frameworks/base/include/media/AudioSystem.h
31 */
32
33/* request to open a direct output with get_output() (by opposition to
34 * sharing an output with other AudioTracks)
35 */
36typedef enum {
37    AUDIO_POLICY_OUTPUT_FLAG_INDIRECT = 0x0,
38    AUDIO_POLICY_OUTPUT_FLAG_DIRECT = 0x1
39} audio_policy_output_flags_t;
40
41/* device categories used for audio_policy->set_force_use() */
42typedef enum {
43    AUDIO_POLICY_FORCE_NONE,
44    AUDIO_POLICY_FORCE_SPEAKER,
45    AUDIO_POLICY_FORCE_HEADPHONES,
46    AUDIO_POLICY_FORCE_BT_SCO,
47    AUDIO_POLICY_FORCE_BT_A2DP,
48    AUDIO_POLICY_FORCE_WIRED_ACCESSORY,
49    AUDIO_POLICY_FORCE_BT_CAR_DOCK,
50    AUDIO_POLICY_FORCE_BT_DESK_DOCK,
51    AUDIO_POLICY_FORCE_ANALOG_DOCK,
52    AUDIO_POLICY_FORCE_DIGITAL_DOCK,
53
54    AUDIO_POLICY_FORCE_CFG_CNT,
55    AUDIO_POLICY_FORCE_CFG_MAX = AUDIO_POLICY_FORCE_CFG_CNT - 1,
56
57    AUDIO_POLICY_FORCE_DEFAULT = AUDIO_POLICY_FORCE_NONE,
58} audio_policy_forced_cfg_t;
59
60/* usages used for audio_policy->set_force_use() */
61typedef enum {
62    AUDIO_POLICY_FORCE_FOR_COMMUNICATION,
63    AUDIO_POLICY_FORCE_FOR_MEDIA,
64    AUDIO_POLICY_FORCE_FOR_RECORD,
65    AUDIO_POLICY_FORCE_FOR_DOCK,
66
67    AUDIO_POLICY_FORCE_USE_CNT,
68    AUDIO_POLICY_FORCE_USE_MAX = AUDIO_POLICY_FORCE_USE_CNT - 1,
69} audio_policy_force_use_t;
70
71/* device connection states used for audio_policy->set_device_connection_state()
72 */
73typedef enum {
74    AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE,
75    AUDIO_POLICY_DEVICE_STATE_AVAILABLE,
76
77    AUDIO_POLICY_DEVICE_STATE_CNT,
78    AUDIO_POLICY_DEVICE_STATE_MAX = AUDIO_POLICY_DEVICE_STATE_CNT - 1,
79} audio_policy_dev_state_t;
80
81typedef enum {
82    /* Used to generate a tone to notify the user of a
83     * notification/alarm/ringtone while they are in a call. */
84    AUDIO_POLICY_TONE_IN_CALL_NOTIFICATION = 0,
85
86    AUDIO_POLICY_TONE_CNT,
87    AUDIO_POLICY_TONE_MAX                  = AUDIO_POLICY_TONE_CNT - 1,
88} audio_policy_tone_t;
89
90
91static inline bool audio_is_low_visibility(audio_stream_type_t stream)
92{
93    switch (stream) {
94    case AUDIO_STREAM_SYSTEM:
95    case AUDIO_STREAM_NOTIFICATION:
96    case AUDIO_STREAM_RING:
97        return true;
98    default:
99        return false;
100    }
101}
102
103
104__END_DECLS
105
106#endif  // ANDROID_AUDIO_POLICY_CORE_H
107