143 lines
4.2 KiB
C++
Vendored
143 lines
4.2 KiB
C++
Vendored
/*
|
|
* Copyright 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 OBOE_STREAM_AAUDIO_H_
|
|
#define OBOE_STREAM_AAUDIO_H_
|
|
|
|
#include <atomic>
|
|
#include <shared_mutex>
|
|
#include <mutex>
|
|
#include <thread>
|
|
|
|
#include "oboe_oboe_AudioStreamBuilder_android.h"
|
|
#include "oboe_oboe_AudioStream_android.h"
|
|
#include "oboe_oboe_Definitions_android.h"
|
|
#include "oboe_aaudio_AAudioLoader_android.h"
|
|
|
|
namespace oboe {
|
|
|
|
/**
|
|
* Implementation of OboeStream that uses AAudio.
|
|
*
|
|
* Do not create this class directly.
|
|
* Use an OboeStreamBuilder to create one.
|
|
*/
|
|
class AudioStreamAAudio : public AudioStream {
|
|
public:
|
|
AudioStreamAAudio();
|
|
explicit AudioStreamAAudio(const AudioStreamBuilder &builder);
|
|
|
|
virtual ~AudioStreamAAudio() = default;
|
|
|
|
/**
|
|
*
|
|
* @return true if AAudio is supported on this device.
|
|
*/
|
|
static bool isSupported();
|
|
|
|
// These functions override methods in AudioStream.
|
|
// See AudioStream for documentation.
|
|
Result open() override;
|
|
Result close() override;
|
|
|
|
Result requestStart() override;
|
|
Result requestPause() override;
|
|
Result requestFlush() override;
|
|
Result requestStop() override;
|
|
|
|
ResultWithValue<int32_t> write(const void *buffer,
|
|
int32_t numFrames,
|
|
int64_t timeoutNanoseconds) override;
|
|
|
|
ResultWithValue<int32_t> read(void *buffer,
|
|
int32_t numFrames,
|
|
int64_t timeoutNanoseconds) override;
|
|
|
|
ResultWithValue<int32_t> setBufferSizeInFrames(int32_t requestedFrames) override;
|
|
int32_t getBufferSizeInFrames() override;
|
|
ResultWithValue<int32_t> getXRunCount() override;
|
|
bool isXRunCountSupported() const override { return true; }
|
|
|
|
ResultWithValue<double> calculateLatencyMillis() override;
|
|
|
|
Result waitForStateChange(StreamState currentState,
|
|
StreamState *nextState,
|
|
int64_t timeoutNanoseconds) override;
|
|
|
|
Result getTimestamp(clockid_t clockId,
|
|
int64_t *framePosition,
|
|
int64_t *timeNanoseconds) override;
|
|
|
|
StreamState getState() override;
|
|
|
|
AudioApi getAudioApi() const override {
|
|
return AudioApi::AAudio;
|
|
}
|
|
|
|
DataCallbackResult callOnAudioReady(AAudioStream *stream,
|
|
void *audioData,
|
|
int32_t numFrames);
|
|
|
|
bool isMMapUsed();
|
|
|
|
protected:
|
|
static void internalErrorCallback(
|
|
AAudioStream *stream,
|
|
void *userData,
|
|
aaudio_result_t error);
|
|
|
|
void *getUnderlyingStream() const override {
|
|
return mAAudioStream.load();
|
|
}
|
|
|
|
void updateFramesRead() override;
|
|
void updateFramesWritten() override;
|
|
|
|
void logUnsupportedAttributes();
|
|
|
|
private:
|
|
// Must call under mLock. And stream must NOT be nullptr.
|
|
Result requestStop_l(AAudioStream *stream);
|
|
|
|
/**
|
|
* Launch a thread that will stop the stream.
|
|
*/
|
|
void launchStopThread();
|
|
|
|
public:
|
|
int32_t getMDelayBeforeCloseMillis() const;
|
|
|
|
void setDelayBeforeCloseMillis(int32_t mDelayBeforeCloseMillis);
|
|
|
|
private:
|
|
|
|
std::atomic<bool> mCallbackThreadEnabled;
|
|
std::atomic<bool> mStopThreadAllowed{false};
|
|
|
|
// pointer to the underlying 'C' AAudio stream, valid if open, null if closed
|
|
std::atomic<AAudioStream *> mAAudioStream{nullptr};
|
|
std::shared_mutex mAAudioStreamLock; // to protect mAAudioStream while closing
|
|
|
|
static AAudioLoader *mLibLoader;
|
|
|
|
// We may not use this but it is so small that it is not worth allocating dynamically.
|
|
AudioStreamErrorCallback mDefaultErrorCallback;
|
|
};
|
|
|
|
} // namespace oboe
|
|
|
|
#endif // OBOE_STREAM_AAUDIO_H_
|