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 ANDROID_AAUDIO_AAUDIO_SERVICE_MESSAGE_H
18#define ANDROID_AAUDIO_AAUDIO_SERVICE_MESSAGE_H
19
20#include <stdint.h>
21
22#include <aaudio/AAudio.h>
23
24namespace aaudio {
25
26// TODO move this to an "include" folder for the service.
27
28// Used to send information about the HAL to the client.
29struct AAudioMessageTimestamp {
30    int64_t position;     // number of frames transferred so far
31    int64_t deviceOffset; // add to client position to get device position
32    int64_t timestamp;    // time when that position was reached
33};
34
35typedef enum aaudio_service_event_e : uint32_t {
36    AAUDIO_SERVICE_EVENT_STARTED,
37    AAUDIO_SERVICE_EVENT_PAUSED,
38    AAUDIO_SERVICE_EVENT_STOPPED,
39    AAUDIO_SERVICE_EVENT_FLUSHED,
40    AAUDIO_SERVICE_EVENT_CLOSED,
41    AAUDIO_SERVICE_EVENT_DISCONNECTED,
42    AAUDIO_SERVICE_EVENT_VOLUME
43} aaudio_service_event_t;
44
45struct AAudioMessageEvent {
46    aaudio_service_event_t event;
47    double                 dataDouble;
48    int64_t                dataLong;
49};
50
51typedef struct AAudioServiceMessage_s {
52    enum class code : uint32_t {
53        NOTHING,
54        TIMESTAMP,
55        EVENT,
56    };
57
58    code what;
59    union {
60        AAudioMessageTimestamp timestamp; // what == TIMESTAMP
61        AAudioMessageEvent event;         // what == EVENT
62    };
63} AAudioServiceMessage;
64
65} /* namespace aaudio */
66
67#endif //ANDROID_AAUDIO_AAUDIO_SERVICE_MESSAGE_H
68