You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
117 lines
3.5 KiB
117 lines
3.5 KiB
/*
|
|
* Copyright (C) 2017 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 AAUDIO_AAUDIO_SERVICE_STREAM_SHARED_H
|
|
#define AAUDIO_AAUDIO_SERVICE_STREAM_SHARED_H
|
|
|
|
#include "fifo/FifoBuffer.h"
|
|
#include "binding/AAudioServiceMessage.h"
|
|
#include "binding/AAudioStreamRequest.h"
|
|
#include "binding/AAudioStreamConfiguration.h"
|
|
|
|
#include "AAudioService.h"
|
|
#include "AAudioServiceStreamBase.h"
|
|
|
|
namespace aaudio {
|
|
|
|
// We expect the queue to only have a few commands.
|
|
// This should be way more than we need.
|
|
#define QUEUE_UP_CAPACITY_COMMANDS (128)
|
|
|
|
class AAudioEndpointManager;
|
|
class AAudioServiceEndpoint;
|
|
class SharedRingBuffer;
|
|
|
|
/**
|
|
* One of these is created for every MODE_SHARED stream in the AAudioService.
|
|
*
|
|
* Each Shared stream will register itself with an AAudioServiceEndpoint when it is opened.
|
|
*/
|
|
class AAudioServiceStreamShared : public AAudioServiceStreamBase {
|
|
|
|
public:
|
|
explicit AAudioServiceStreamShared(android::AAudioService &aAudioService);
|
|
virtual ~AAudioServiceStreamShared() = default;
|
|
|
|
static std::string dumpHeader();
|
|
|
|
std::string dump() const override;
|
|
|
|
aaudio_result_t open(const aaudio::AAudioStreamRequest &request) override;
|
|
|
|
void writeDataIfRoom(int64_t mmapFramesRead, const void *buffer, int32_t numFrames);
|
|
|
|
/**
|
|
* This must only be called under getAudioDataQueueLock().
|
|
* @return
|
|
*/
|
|
std::shared_ptr<SharedRingBuffer> getAudioDataQueue_l()
|
|
REQUIRES(audioDataQueueLock) {
|
|
return mAudioDataQueue;
|
|
}
|
|
|
|
/* Keep a record of when a buffer transfer completed.
|
|
* This allows for a more accurate timing model.
|
|
*/
|
|
void markTransferTime(Timestamp ×tamp);
|
|
|
|
void setTimestampPositionOffset(int64_t deltaFrames) {
|
|
mTimestampPositionOffset.store(deltaFrames);
|
|
}
|
|
|
|
void incrementXRunCount() {
|
|
sendXRunCount(++mXRunCount);
|
|
}
|
|
|
|
int32_t getXRunCount() const {
|
|
return mXRunCount.load();
|
|
}
|
|
|
|
const char *getTypeText() const override { return "Shared"; }
|
|
|
|
// This is public so that the thread safety annotation, GUARDED_BY(),
|
|
// Can work when another object takes the lock.
|
|
mutable std::mutex audioDataQueueLock;
|
|
|
|
protected:
|
|
|
|
aaudio_result_t getAudioDataDescription(AudioEndpointParcelable &parcelable) override;
|
|
|
|
aaudio_result_t getFreeRunningPosition(int64_t *positionFrames, int64_t *timeNanos) override;
|
|
|
|
aaudio_result_t getHardwareTimestamp(int64_t *positionFrames, int64_t *timeNanos) override;
|
|
|
|
/**
|
|
* @param requestedCapacityFrames
|
|
* @param framesPerBurst
|
|
* @return capacity or negative error
|
|
*/
|
|
static int32_t calculateBufferCapacity(int32_t requestedCapacityFrames,
|
|
int32_t framesPerBurst);
|
|
|
|
private:
|
|
|
|
std::shared_ptr<SharedRingBuffer> mAudioDataQueue GUARDED_BY(audioDataQueueLock);
|
|
|
|
std::atomic<int64_t> mTimestampPositionOffset;
|
|
std::atomic<int32_t> mXRunCount;
|
|
|
|
};
|
|
|
|
} /* namespace aaudio */
|
|
|
|
#endif //AAUDIO_AAUDIO_SERVICE_STREAM_SHARED_H
|