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Diffstat (limited to 'services/audiopolicy/common/include/policy.h')
-rwxr-xr-x | services/audiopolicy/common/include/policy.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/services/audiopolicy/common/include/policy.h b/services/audiopolicy/common/include/policy.h new file mode 100755 index 0000000..a2327ee --- /dev/null +++ b/services/audiopolicy/common/include/policy.h @@ -0,0 +1,84 @@ +/* + * 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); +} |