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/*
* Copyright (C) 2016 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.
*/
#ifndef ANDROID_AAUDIO_AAUDIO_SERVICE_MESSAGE_H
#define ANDROID_AAUDIO_AAUDIO_SERVICE_MESSAGE_H
#include <stdint.h>
#include <aaudio/AAudio.h>
namespace aaudio {
// TODO move this to an "include" folder for the service.
// Used to send information about the HAL to the client.
struct AAudioMessageTimestamp {
int64_t position; // number of frames transferred so far
int64_t timestamp; // time when that position was reached
};
typedef enum aaudio_service_event_e : uint32_t {
AAUDIO_SERVICE_EVENT_STARTED,
AAUDIO_SERVICE_EVENT_PAUSED,
AAUDIO_SERVICE_EVENT_STOPPED,
AAUDIO_SERVICE_EVENT_FLUSHED,
AAUDIO_SERVICE_EVENT_DISCONNECTED,
AAUDIO_SERVICE_EVENT_VOLUME,
AAUDIO_SERVICE_EVENT_XRUN
} aaudio_service_event_t;
struct AAudioMessageEvent {
aaudio_service_event_t event;
union {
double dataDouble;
int64_t dataLong;
};
};
typedef struct AAudioServiceMessage_s {
enum class code : uint32_t {
NOTHING,
TIMESTAMP_SERVICE, // when frame is read or written by the service to the client
TIMESTAMP_HARDWARE, // when frame is at DAC or ADC
EVENT,
};
code what;
union {
AAudioMessageTimestamp timestamp; // what == TIMESTAMP
AAudioMessageEvent event; // what == EVENT
};
} AAudioServiceMessage;
} /* namespace aaudio */
#endif //ANDROID_AAUDIO_AAUDIO_SERVICE_MESSAGE_H
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