初始化

cocos2d-x/cocos/audio/android/UrlAudioPlayer.h

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+/****************************************************************************
+Copyright (c) 2016 Chukong Technologies Inc.
+Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
+
+http://www.cocos2d-x.org
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+****************************************************************************/
+
+#pragma once
+
+#include "audio/android/IAudioPlayer.h"
+#include "audio/android/OpenSLHelper.h"
+#include "audio/android/AssetFd.h"
+#include <mutex>
+#include <vector>
+#include <memory>
+#include <thread>
+
+namespace cocos2d { 
+
+class ICallerThreadUtils;
+class AssetFd;
+
+class UrlAudioPlayer : public IAudioPlayer
+{
+public:
+
+    // Override Functions Begin
+    virtual int getId() const override
+    { return _id; };
+
+    virtual void setId(int id) override
+    { _id = id; };
+
+    virtual std::string getUrl() const override
+    { return _url; };
+
+    virtual State getState() const override
+    { return _state; };
+
+    virtual void play() override;
+
+    virtual void pause() override;
+
+    virtual void resume() override;
+
+    virtual void stop() override;
+
+    virtual void rewind() override;
+
+    virtual void setVolume(float volume) override;
+
+    virtual float getVolume() const override;
+
+    virtual void setAudioFocus(bool isFocus) override;
+
+    virtual void setLoop(bool isLoop) override;
+
+    virtual bool isLoop() const override;
+
+    virtual float getDuration() const override;
+
+    virtual float getPosition() const override;
+
+    virtual bool setPosition(float pos) override;
+
+    virtual void setPlayEventCallback(const PlayEventCallback &playEventCallback) override;
+
+    // Override Functions EndOv
+
+private:
+    UrlAudioPlayer(SLEngineItf engineItf, SLObjectItf outputMixObject, ICallerThreadUtils* callerThreadUtils);
+    virtual ~UrlAudioPlayer();
+
+    bool prepare(const std::string &url, SLuint32 locatorType, std::shared_ptr<AssetFd> assetFd, int start, int length);
+
+    static void stopAll();
+
+    void destroy();
+
+    inline void setState(State state)
+    { _state = state; };
+
+    void playEventCallback(SLPlayItf caller, SLuint32 playEvent);
+
+    void setVolumeToSLPlayer(float volume);
+
+private:
+    SLEngineItf _engineItf;
+    SLObjectItf _outputMixObj;
+    ICallerThreadUtils* _callerThreadUtils;
+
+    int _id;
+    std::string _url;
+
+    std::shared_ptr<AssetFd> _assetFd;
+
+    SLObjectItf _playObj;
+    SLPlayItf _playItf;
+    SLSeekItf _seekItf;
+    SLVolumeItf _volumeItf;
+
+    float _volume;
+    float _duration;
+    bool _isLoop;
+    bool _isAudioFocus;
+    State _state;
+
+    PlayEventCallback _playEventCallback;
+
+    std::thread::id _callerThreadId;
+    std::shared_ptr<bool> _isDestroyed;
+
+    friend class SLUrlAudioPlayerCallbackProxy;
+    friend class AudioPlayerProvider;
+};
+
+} // namespace cocos2d {