AudioStreamCallback.h

/*
 * 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 OBOE_STREAM_CALLBACK_H
#define OBOE_STREAM_CALLBACK_H
 
#include "oboe/Definitions.h"
 
namespace oboe {
 
class AudioStream;
 
class AudioStreamDataCallback {
public:
    virtual ~AudioStreamDataCallback() = default;
 
    virtual DataCallbackResult onAudioReady(
            AudioStream *audioStream,
            void *audioData,
            int32_t numFrames) = 0;
};
 
class AudioStreamErrorCallback {
public:
    virtual ~AudioStreamErrorCallback() = default;
 
    virtual bool onError(AudioStream* /* audioStream */, Result /* error */) {
        return false;
    }
 
    virtual void onErrorBeforeClose(AudioStream* /* audioStream */, Result /* error */) {}
 
    virtual void onErrorAfterClose(AudioStream* /* audioStream */, Result /* error */) {}
 
};
 
class AudioStreamPresentationCallback {
public:
    virtual ~AudioStreamPresentationCallback() = default;
 
    virtual void onPresentationEnded(AudioStream* /* audioStream */) {}
};
 
class AudioStreamRoutingCallback {
public:
    virtual void onRoutingChanged(AudioStream* /* audioStream */,
                                  const int32_t* /* deviceIds */,
                                  int32_t /* numDevices */) {}
};
 
class AudioStreamPartialDataCallback {
public:
    virtual ~AudioStreamPartialDataCallback() = default;
 
    virtual int32_t onPartialAudioReady(
            AudioStream *audioStream,
            void *audioData,
            int32_t numFrames) = 0;
};
 
class AudioStreamCallback : public AudioStreamDataCallback,
                            public AudioStreamErrorCallback {
public:
    virtual ~AudioStreamCallback() = default;
};
 
} // namespace oboe
 
#endif //OBOE_STREAM_CALLBACK_H