cocos-enhance-kit/cocos2d-x/cocos/ui/videoplayer/VideoPlayer.h

/****************************************************************************
 Copyright (c) 2014-2016 Chukong Technologies Inc.

 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
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 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,
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 ****************************************************************************/

#pragma once

#include "base/ccMacros.h"
#include "base/CCData.h"
#include "base/CCRef.h"
#include <functional>
#include <string>
#include <map>
#include "renderer/gfx/Texture2D.h"

#ifndef OBJC_CLASS
#ifdef __OBJC__
#define OBJC_CLASS(name) @class name
#else
#define OBJC_CLASS(name) class name
#endif
#endif // OBJC_CLASS

NS_CC_BEGIN

/**
 * @class VideoPlayer
 * @brief Displays a video file.
 *
 * @note VideoPlayer displays a video file base on system widget.
 * It's mean VideoPlayer displays a video file above all graphical elements of cocos2d-x.
 * @js NA
 */
class VideoPlayer : public Ref
{
  public:
    /**
     * Videoplayer play event type.
     */
    enum class EventType
    {
        PLAYING = 0,
        PAUSED,
        STOPPED,
        COMPLETED,
        META_LOADED,
        CLICKED,
        READY_TO_PLAY
    };

    VideoPlayer();
    
    /**
     * A callback which will be called after specific VideoPlayer event happens.
     */
    typedef std::function<void()> ccVideoPlayerCallback;


    /**
     * Sets a URL as a video source for VideoPlayer.
     */
    virtual void setURL(const std::string &_videoURL);

    /**
     * Starts playback.
     */
    virtual void play();

    /**
     * Pauses playback.
     */
    virtual void pause();

    /**
     * Stops playback.
     */
    virtual void stop();

    /**
     * Seeks to specified time position.
     *
     * @param sec   The offset in seconds from the start to seek to.
     */
    virtual void seekTo(float sec);

    /**
     * Get the current play time, measure in seconds.
     */
    float currentTime() const;

    float duration() const;

    /**
     * Get frame rgba pixel as bytes
     */
    void getFrame();

    int getFrameChannel() const;

    int getFrameWidth() const;

    int getFrameHeight() const;

    int getVideoTexDataSize() const;

    void update();

    void pushFrameDataToTexture2D(cocos2d::renderer::Texture* tex) const;

    void setShowRawFrame(bool show) const;

    /**
     * Causes the video player to keep aspect ratio or no when displaying the video.
     *
     * @param enable    Specify true to keep aspect ratio or false to scale the video until
     * both dimensions fit the visible bounds of the view exactly.
     */
    virtual void setKeepAspectRatioEnabled(bool enable);

    /**
     * Indicates whether the video player keep aspect ratio when displaying the video.
     */
    virtual bool isKeepAspectRatioEnabled() const { return _keepAspectRatioEnabled; }

    /**
     * Causes the video player to enter or exit full-screen mode.
     *
     * @param fullscreen    Specify true to enter full-screen mode or false to exit full-screen mode.
     */
    virtual void setFullScreenEnabled(bool fullscreen);

    /**
     * Register a callback to be invoked when the video state is updated.
     *
     * @param callback  The callback that will be run.
     */
    virtual void addEventListener(const std::string& name, const VideoPlayer::ccVideoPlayerCallback& callback);

    /**
     * @brief A function which will be called when video is playing.
     *
     * @param event @see VideoPlayer::EventType.
     */
    virtual void onPlayEvent(int event);

    /**
     * Toggle visibility of VideoPlayer.
     */
    virtual void setVisible(bool visible);

    /**
     * Set the rect of VideoPlayer.
     */
    virtual void setFrame(float x, float y, float width, float height);
    
  protected:

    virtual ~VideoPlayer();

  protected:

    enum class Source
    {
        FILENAME = 0,
        URL
    };

    bool _isVisible;
    bool _fullScreenDirty;
    bool _fullScreenEnabled;
    bool _keepAspectRatioEnabled;

    std::string _videoURL;
    Source _videoSource;

    int _videoPlayerIndex;
    std::map<std::string, ccVideoPlayerCallback> _eventCallback;

    void *_videoView;

    int _texDataSize;

private:
    unsigned char* _videoPixels;
    int _maxDataLen;

    static const int PX_RGBA = 3;
    static const int PX_RGB565 = 6;
    static const int PX_BGRA = 7;
};

NS_CC_END