1 /* 2 * Copyright (C) 2015 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 #pragma once 18 19 #include <system/audio.h> 20 21 // For mixed output and inputs, the policy will use max mixer sampling rates. 22 // Do not limit sampling rate otherwise 23 #define MAX_MIXER_SAMPLING_RATE 192000 24 25 // For mixed output and inputs, the policy will use max mixer channel count. 26 // Do not limit channel count otherwise 27 #define MAX_MIXER_CHANNEL_COUNT 8 28 29 /** 30 * A device mask for all audio input devices that are considered "virtual" when evaluating 31 * active inputs in getActiveInput() 32 */ 33 #define APM_AUDIO_IN_DEVICE_VIRTUAL_ALL (AUDIO_DEVICE_IN_REMOTE_SUBMIX|AUDIO_DEVICE_IN_FM_TUNER) 34 35 36 /** 37 * A device mask for all audio input and output devices where matching inputs/outputs on device 38 * type alone is not enough: the address must match too 39 */ 40 #define APM_AUDIO_DEVICE_OUT_MATCH_ADDRESS_ALL (AUDIO_DEVICE_OUT_REMOTE_SUBMIX) 41 42 #define APM_AUDIO_DEVICE_IN_MATCH_ADDRESS_ALL (AUDIO_DEVICE_IN_REMOTE_SUBMIX) 43 44 /** 45 * Check if the state given correspond to an in call state. 46 * @TODO find a better name for widely call state 47 * 48 * @param[in] state to consider 49 * 50 * @return true if given state represents a device in a telephony or VoIP call 51 */ 52 static inline bool is_state_in_call(int state) 53 { 54 return (state == AUDIO_MODE_IN_CALL) || (state == AUDIO_MODE_IN_COMMUNICATION); 55 } 56 57 /** 58 * Check if the input device given is considered as a virtual device. 59 * 60 * @param[in] device to consider 61 * 62 * @return true if the device is a virtual one, false otherwise. 63 */ 64 static inline bool is_virtual_input_device(audio_devices_t device) 65 { 66 if ((device & AUDIO_DEVICE_BIT_IN) != 0) { 67 device &= ~AUDIO_DEVICE_BIT_IN; 68 if ((popcount(device) == 1) && ((device & ~APM_AUDIO_IN_DEVICE_VIRTUAL_ALL) == 0)) 69 return true; 70 } 71 return false; 72 } 73 74 /** 75 * Check whether the device type is one 76 * where addresses are used to distinguish between one connected device and another 77 * 78 * @param[in] device to consider 79 * 80 * @return true if the device needs distinguish on address, false otherwise.. 81 */ 82 static inline bool device_distinguishes_on_address(audio_devices_t device) 83 { 84 return (((device & AUDIO_DEVICE_BIT_IN) != 0) && 85 ((~AUDIO_DEVICE_BIT_IN & device & APM_AUDIO_DEVICE_IN_MATCH_ADDRESS_ALL) != 0)) || 86 (((device & AUDIO_DEVICE_BIT_IN) == 0) && 87 ((device & APM_AUDIO_DEVICE_OUT_MATCH_ADDRESS_ALL) != 0)); 88 } 89
