/*
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* Copyright (C) 2016 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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package android.hardware.audio@2.0;
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import android.hardware.audio.common@2.0;
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enum Result : int32_t {
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OK,
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NOT_INITIALIZED,
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INVALID_ARGUMENTS,
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INVALID_STATE,
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NOT_SUPPORTED
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};
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@export(name="audio_drain_type_t", value_prefix="AUDIO_DRAIN_")
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enum AudioDrain : int32_t {
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/** drain() returns when all data has been played. */
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ALL,
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/**
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* drain() returns a short time before all data from the current track has
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* been played to give time for gapless track switch.
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*/
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EARLY_NOTIFY
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};
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/**
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* A substitute for POSIX timespec.
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*/
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struct TimeSpec {
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uint64_t tvSec; // seconds
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uint64_t tvNSec; // nanoseconds
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};
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/**
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* IEEE 802 MAC address.
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*/
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typedef uint8_t[6] MacAddress;
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struct ParameterValue {
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string key;
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string value;
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};
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/**
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* Specifies a device in case when several devices of the same type
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* can be connected (e.g. BT A2DP, USB).
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*/
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struct DeviceAddress {
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AudioDevice device; // discriminator
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union Address {
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MacAddress mac; // used for BLUETOOTH_A2DP_*
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uint8_t[4] ipv4; // used for IP
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struct Alsa {
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int32_t card;
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int32_t device;
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} alsa; // used for USB_*
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} address;
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string busAddress; // used for BUS
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string rSubmixAddress; // used for REMOTE_SUBMIX
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};
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/**
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* Mmap buffer descriptor returned by IStream.createMmapBuffer().
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* Used by streams opened in mmap mode.
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*/
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struct MmapBufferInfo {
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memory sharedMemory; // mmap memory buffer
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int32_t bufferSizeFrames; // total buffer size in frames
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int32_t burstSizeFrames; // transfer size granularity in frames
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};
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/**
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* Mmap buffer read/write position returned by IStream.getMmapPosition().
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* Used by streams opened in mmap mode.
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*/
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struct MmapPosition {
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int64_t timeNanoseconds; // time stamp in ns, CLOCK_MONOTONIC
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int32_t positionFrames; // increasing 32 bit frame count reset when IStream.stop() is called
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};
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/**
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* The message queue flags used to synchronize reads and writes from
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* message queues used by StreamIn and StreamOut.
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*/
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enum MessageQueueFlagBits : uint32_t {
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NOT_EMPTY = 1 << 0,
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NOT_FULL = 1 << 1
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};
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