system/audio_policy.h

   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 /* device categories used for audio_policy->set_force_use() */
  34 typedef enum {
  35     AUDIO_POLICY_FORCE_NONE,
  36     AUDIO_POLICY_FORCE_SPEAKER,
  37     AUDIO_POLICY_FORCE_HEADPHONES,
  38     AUDIO_POLICY_FORCE_BT_SCO,
  39     AUDIO_POLICY_FORCE_BT_A2DP,
  40     AUDIO_POLICY_FORCE_WIRED_ACCESSORY,
  41     AUDIO_POLICY_FORCE_BT_CAR_DOCK,
  42     AUDIO_POLICY_FORCE_BT_DESK_DOCK,
  43     AUDIO_POLICY_FORCE_ANALOG_DOCK,
  44     AUDIO_POLICY_FORCE_DIGITAL_DOCK,
  45     AUDIO_POLICY_FORCE_NO_BT_A2DP, /* A2DP sink is not preferred to speaker or wired HS */
  46     AUDIO_POLICY_FORCE_SYSTEM_ENFORCED,
  47
  48     AUDIO_POLICY_FORCE_CFG_CNT,
  49     AUDIO_POLICY_FORCE_CFG_MAX = AUDIO_POLICY_FORCE_CFG_CNT - 1,
  50
  51     AUDIO_POLICY_FORCE_DEFAULT = AUDIO_POLICY_FORCE_NONE,
  52 } audio_policy_forced_cfg_t;
  53
  54 /* usages used for audio_policy->set_force_use() */
  55 typedef enum {
  56     AUDIO_POLICY_FORCE_FOR_COMMUNICATION,
  57     AUDIO_POLICY_FORCE_FOR_MEDIA,
  58     AUDIO_POLICY_FORCE_FOR_RECORD,
  59     AUDIO_POLICY_FORCE_FOR_DOCK,
  60     AUDIO_POLICY_FORCE_FOR_SYSTEM,
  61
  62     AUDIO_POLICY_FORCE_USE_CNT,
  63     AUDIO_POLICY_FORCE_USE_MAX = AUDIO_POLICY_FORCE_USE_CNT - 1,
  64 } audio_policy_force_use_t;
  65
  66 /* device connection states used for audio_policy->set_device_connection_state()
  67  */
  68 typedef enum {
  69     AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE,
  70     AUDIO_POLICY_DEVICE_STATE_AVAILABLE,
  71
  72     AUDIO_POLICY_DEVICE_STATE_CNT,
  73     AUDIO_POLICY_DEVICE_STATE_MAX = AUDIO_POLICY_DEVICE_STATE_CNT - 1,
  74 } audio_policy_dev_state_t;
  75
  76 typedef enum {
  77     /* Used to generate a tone to notify the user of a
  78      * notification/alarm/ringtone while they are in a call. */
  79     AUDIO_POLICY_TONE_IN_CALL_NOTIFICATION = 0,
  80
  81     AUDIO_POLICY_TONE_CNT,
  82     AUDIO_POLICY_TONE_MAX                  = AUDIO_POLICY_TONE_CNT - 1,
  83 } audio_policy_tone_t;
  84
  85
  86 static inline bool audio_is_low_visibility(audio_stream_type_t stream)
  87 {
  88     switch (stream) {
  89     case AUDIO_STREAM_SYSTEM:
  90     case AUDIO_STREAM_NOTIFICATION:
  91     case AUDIO_STREAM_RING:
  92         return true;
  93     default:
  94         return false;
  95     }
  96 }
  97
  98
  99 __END_DECLS
 100
 101 #endif  // ANDROID_AUDIO_POLICY_CORE_H