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/*
* Copyright (C) 2015 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.
*/
#pragma once
#include <system/audio.h>
// For mixed output and inputs, the policy will use max mixer sampling rates.
// Do not limit sampling rate otherwise
#define MAX_MIXER_SAMPLING_RATE 48000
// For mixed output and inputs, the policy will use max mixer channel count.
// Do not limit channel count otherwise
#define MAX_MIXER_CHANNEL_COUNT 8
/**
* A device mask for all audio input devices that are considered "virtual" when evaluating
* active inputs in getActiveInput()
*/
#define APM_AUDIO_IN_DEVICE_VIRTUAL_ALL (AUDIO_DEVICE_IN_REMOTE_SUBMIX|AUDIO_DEVICE_IN_FM_TUNER)
/**
* A device mask for all audio input and output devices where matching inputs/outputs on device
* type alone is not enough: the address must match too
*/
#define APM_AUDIO_DEVICE_MATCH_ADDRESS_ALL (AUDIO_DEVICE_IN_REMOTE_SUBMIX | \
AUDIO_DEVICE_OUT_REMOTE_SUBMIX)
/**
* Check if the state given correspond to an in call state.
* @TODO find a better name for widely call state
*
* @param[in] state to consider
*
* @return true if given state represents a device in a telephony or VoIP call
*/
static inline bool is_state_in_call(int state)
{
return (state == AUDIO_MODE_IN_CALL) || (state == AUDIO_MODE_IN_COMMUNICATION);
}
/**
* Check if the input device given is considered as a virtual device.
*
* @param[in] device to consider
*
* @return true if the device is a virtual one, false otherwise.
*/
static bool is_virtual_input_device(audio_devices_t device)
{
if ((device & AUDIO_DEVICE_BIT_IN) != 0) {
device &= ~AUDIO_DEVICE_BIT_IN;
if ((popcount(device) == 1) && ((device & ~APM_AUDIO_IN_DEVICE_VIRTUAL_ALL) == 0))
return true;
}
return false;
}
/**
* Check whether the device type is one
* where addresses are used to distinguish between one connected device and another
*
* @param[in] device to consider
*
* @return true if the device needs distinguish on address, false otherwise..
*/
static bool device_distinguishes_on_address(audio_devices_t device)
{
return ((device & APM_AUDIO_DEVICE_MATCH_ADDRESS_ALL & ~AUDIO_DEVICE_BIT_IN) != 0);
}
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