core: move audio_policy.h here from hardware

/*

 * Copyright (C) 2011 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#ifndef ANDROID_AUDIO_POLICY_CORE_H

#define ANDROID_AUDIO_POLICY_CORE_H

#include <stdint.h>

#include <sys/cdefs.h>

#include <sys/types.h>

#include <cutils/bitops.h>

__BEGIN_DECLS

/* The enums were moved here mostly from

 * frameworks/base/include/media/AudioSystem.h

 */

/* request to open a direct output with get_output() (by opposition to

 * sharing an output with other AudioTracks)

 */

typedef enum {

    AUDIO_POLICY_OUTPUT_FLAG_INDIRECT = 0x0,

    AUDIO_POLICY_OUTPUT_FLAG_DIRECT = 0x1

} audio_policy_output_flags_t;

/* device categories used for audio_policy->set_force_use() */

typedef enum {

    AUDIO_POLICY_FORCE_NONE,

    AUDIO_POLICY_FORCE_SPEAKER,

    AUDIO_POLICY_FORCE_HEADPHONES,

    AUDIO_POLICY_FORCE_BT_SCO,

    AUDIO_POLICY_FORCE_BT_A2DP,

    AUDIO_POLICY_FORCE_WIRED_ACCESSORY,

    AUDIO_POLICY_FORCE_BT_CAR_DOCK,

    AUDIO_POLICY_FORCE_BT_DESK_DOCK,

    AUDIO_POLICY_FORCE_ANALOG_DOCK,

    AUDIO_POLICY_FORCE_DIGITAL_DOCK,

    AUDIO_POLICY_FORCE_CFG_CNT,

    AUDIO_POLICY_FORCE_CFG_MAX = AUDIO_POLICY_FORCE_CFG_CNT - 1,

    AUDIO_POLICY_FORCE_DEFAULT = AUDIO_POLICY_FORCE_NONE,

} audio_policy_forced_cfg_t;

/* usages used for audio_policy->set_force_use() */

typedef enum {

    AUDIO_POLICY_FORCE_FOR_COMMUNICATION,

    AUDIO_POLICY_FORCE_FOR_MEDIA,

    AUDIO_POLICY_FORCE_FOR_RECORD,

    AUDIO_POLICY_FORCE_FOR_DOCK,

    AUDIO_POLICY_FORCE_USE_CNT,

    AUDIO_POLICY_FORCE_USE_MAX = AUDIO_POLICY_FORCE_USE_CNT - 1,

} audio_policy_force_use_t;

/* device connection states used for audio_policy->set_device_connection_state()

 */

typedef enum {

    AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE,

    AUDIO_POLICY_DEVICE_STATE_AVAILABLE,

    AUDIO_POLICY_DEVICE_STATE_CNT,

    AUDIO_POLICY_DEVICE_STATE_MAX = AUDIO_POLICY_DEVICE_STATE_CNT - 1,

} audio_policy_dev_state_t;

typedef enum {

    /* Used to generate a tone to notify the user of a

     * notification/alarm/ringtone while they are in a call. */

    AUDIO_POLICY_TONE_IN_CALL_NOTIFICATION = 0,

    AUDIO_POLICY_TONE_CNT,

    AUDIO_POLICY_TONE_MAX                  = AUDIO_POLICY_TONE_CNT - 1,

} audio_policy_tone_t;

static inline bool audio_is_low_visibility(audio_stream_type_t stream)

{

    switch (stream) {

    case AUDIO_STREAM_SYSTEM:

    case AUDIO_STREAM_NOTIFICATION:

    case AUDIO_STREAM_RING:

        return true;

    default:

        return false;

    }

}

__END_DECLS

#endif  // ANDROID_AUDIO_POLICY_CORE_H