118 lines
4 KiB
C
118 lines
4 KiB
C
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_AUDIO_POLICY_CORE_H
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#define ANDROID_AUDIO_POLICY_CORE_H
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#include <stdint.h>
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <cutils/bitops.h>
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__BEGIN_DECLS
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/* The enums were moved here mostly from
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* frameworks/base/include/media/AudioSystem.h
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*/
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/* the audio output flags serve two purposes:
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* - when an AudioTrack is created they indicate a "wish" to be connected to an output stream with
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* attributes corresponding to the specified flags
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* - when present in an output profile descriptor listed for a particular audio hardware module,
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* they indicate that an output stream can be opened that supports the attributes indicated by
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* the flags.
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* the audio policy manager will try to match the flags in the request (when getOuput() is called)
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* to an available output stream.
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*/
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typedef enum {
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AUDIO_POLICY_OUTPUT_FLAG_NONE = 0x0, // no attributes
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AUDIO_POLICY_OUTPUT_FLAG_DIRECT = 0x1, // this output directly connects a track to one output
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// stream (no software mixer)
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AUDIO_POLICY_OUTPUT_FLAG_PRIMARY = 0x2, // this output is the primary output of the device.
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// it is unique and must be present. it is opened by
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// default and receives routing, audio mode and
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// volume controls related to voice calls.
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AUDIO_POLICY_OUTPUT_FLAG_FAST = 0x4, // output supports "fast tracks", defined elsewhere
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} audio_policy_output_flags_t;
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/* device categories used for audio_policy->set_force_use() */
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typedef enum {
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AUDIO_POLICY_FORCE_NONE,
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AUDIO_POLICY_FORCE_SPEAKER,
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AUDIO_POLICY_FORCE_HEADPHONES,
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AUDIO_POLICY_FORCE_BT_SCO,
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AUDIO_POLICY_FORCE_BT_A2DP,
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AUDIO_POLICY_FORCE_WIRED_ACCESSORY,
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AUDIO_POLICY_FORCE_BT_CAR_DOCK,
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AUDIO_POLICY_FORCE_BT_DESK_DOCK,
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AUDIO_POLICY_FORCE_ANALOG_DOCK,
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AUDIO_POLICY_FORCE_DIGITAL_DOCK,
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AUDIO_POLICY_FORCE_CFG_CNT,
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AUDIO_POLICY_FORCE_CFG_MAX = AUDIO_POLICY_FORCE_CFG_CNT - 1,
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AUDIO_POLICY_FORCE_DEFAULT = AUDIO_POLICY_FORCE_NONE,
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} audio_policy_forced_cfg_t;
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/* usages used for audio_policy->set_force_use() */
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typedef enum {
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AUDIO_POLICY_FORCE_FOR_COMMUNICATION,
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AUDIO_POLICY_FORCE_FOR_MEDIA,
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AUDIO_POLICY_FORCE_FOR_RECORD,
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AUDIO_POLICY_FORCE_FOR_DOCK,
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AUDIO_POLICY_FORCE_USE_CNT,
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AUDIO_POLICY_FORCE_USE_MAX = AUDIO_POLICY_FORCE_USE_CNT - 1,
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} audio_policy_force_use_t;
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/* device connection states used for audio_policy->set_device_connection_state()
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*/
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typedef enum {
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AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE,
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AUDIO_POLICY_DEVICE_STATE_AVAILABLE,
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AUDIO_POLICY_DEVICE_STATE_CNT,
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AUDIO_POLICY_DEVICE_STATE_MAX = AUDIO_POLICY_DEVICE_STATE_CNT - 1,
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} audio_policy_dev_state_t;
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typedef enum {
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/* Used to generate a tone to notify the user of a
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* notification/alarm/ringtone while they are in a call. */
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AUDIO_POLICY_TONE_IN_CALL_NOTIFICATION = 0,
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AUDIO_POLICY_TONE_CNT,
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AUDIO_POLICY_TONE_MAX = AUDIO_POLICY_TONE_CNT - 1,
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} audio_policy_tone_t;
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static inline bool audio_is_low_visibility(audio_stream_type_t stream)
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{
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switch (stream) {
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case AUDIO_STREAM_SYSTEM:
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case AUDIO_STREAM_NOTIFICATION:
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case AUDIO_STREAM_RING:
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return true;
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default:
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return false;
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}
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}
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__END_DECLS
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#endif // ANDROID_AUDIO_POLICY_CORE_H
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