1/*
2 * Copyright (C) 2016 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#ifndef BINDING_AAUDIOSERVICEDEFINITIONS_H
18#define BINDING_AAUDIOSERVICEDEFINITIONS_H
19
20#include <stdint.h>
21#include <utils/RefBase.h>
22#include <binder/TextOutput.h>
23#include <binder/IInterface.h>
24
25#include <aaudio/AAudio.h>
26
27using android::NO_ERROR;
28using android::IBinder;
29
30namespace android {
31
32enum aaudio_service_commands_t {
33    REGISTER_CLIENT = IBinder::FIRST_CALL_TRANSACTION,
34    OPEN_STREAM,
35    CLOSE_STREAM,
36    GET_STREAM_DESCRIPTION,
37    START_STREAM,
38    PAUSE_STREAM,
39    STOP_STREAM,
40    FLUSH_STREAM,
41    REGISTER_AUDIO_THREAD,
42    UNREGISTER_AUDIO_THREAD
43};
44
45enum aaudio_client_commands_t {
46    ON_STREAM_CHANGE = IBinder::FIRST_CALL_TRANSACTION
47};
48
49} // namespace android
50
51namespace aaudio {
52
53typedef int32_t  aaudio_handle_t;
54
55#define AAUDIO_HANDLE_INVALID  ((aaudio_handle_t) -1)
56
57// This must be a fixed width so it can be in shared memory.
58enum RingbufferFlags : uint32_t {
59    NONE = 0,
60    RATE_ISOCHRONOUS = 0x0001,
61    RATE_ASYNCHRONOUS = 0x0002,
62    COHERENCY_DMA = 0x0004,
63    COHERENCY_ACQUIRE_RELEASE = 0x0008,
64    COHERENCY_AUTO = 0x0010,
65};
66
67// This is not passed through Binder.
68// Client side code will convert Binder data and fill this descriptor.
69typedef struct RingBufferDescriptor_s {
70    uint8_t* dataAddress;       // offset from read or write block
71    int64_t* writeCounterAddress;
72    int64_t* readCounterAddress;
73    int32_t  bytesPerFrame;     // index is in frames
74    int32_t  framesPerBurst;    // for ISOCHRONOUS queues
75    int32_t  capacityInFrames;  // zero if unused
76    RingbufferFlags flags;
77} RingBufferDescriptor;
78
79// This is not passed through Binder.
80// Client side code will convert Binder data and fill this descriptor.
81typedef struct EndpointDescriptor_s {
82    // Set capacityInFrames to zero if Queue is unused.
83    RingBufferDescriptor upMessageQueueDescriptor;   // server to client
84    RingBufferDescriptor downMessageQueueDescriptor; // client to server
85    RingBufferDescriptor dataQueueDescriptor;    // playback or capture
86} EndpointDescriptor;
87
88} // namespace aaudio
89
90#endif //BINDING_AAUDIOSERVICEDEFINITIONS_H
91