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132 lines
4.1 KiB
C++
132 lines
4.1 KiB
C++
/*
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* CVideoHandler.h, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#pragma once
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#include "../lib/Rect.h"
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#include "../lib/filesystem/ResourcePath.h"
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struct SDL_Surface;
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struct SDL_Texture;
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enum class EVideoType : ui8
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{
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INTRO = 0, // use entire window: stopOnKey = true, scale = true, overlay = false
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SPELLBOOK // overlay video: stopOnKey = false, scale = false, overlay = true
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};
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class IVideoPlayer : boost::noncopyable
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{
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public:
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virtual bool open(const VideoPath & name, bool scale = false)=0; //true - succes
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virtual void close()=0;
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virtual bool nextFrame()=0;
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virtual void show(int x, int y, SDL_Surface *dst, bool update = true)=0;
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virtual void redraw(int x, int y, SDL_Surface *dst, bool update = true)=0; //reblits buffer
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virtual bool wait()=0;
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virtual int curFrame() const =0;
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virtual int frameCount() const =0;
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};
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class IMainVideoPlayer : public IVideoPlayer
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{
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public:
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virtual ~IMainVideoPlayer() = default;
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virtual void update(int x, int y, SDL_Surface *dst, bool forceRedraw, bool update = true, std::function<void()> restart = nullptr){}
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virtual bool openAndPlayVideo(const VideoPath & name, int x, int y, EVideoType videoType)
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{
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return false;
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}
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virtual std::pair<std::unique_ptr<ui8 []>, si64> getAudio(const VideoPath & videoToOpen) { return std::make_pair(nullptr, 0); };
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virtual Point size() { return Point(0, 0); };
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};
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class CEmptyVideoPlayer final : public IMainVideoPlayer
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{
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public:
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int curFrame() const override {return -1;};
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int frameCount() const override {return -1;};
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void redraw( int x, int y, SDL_Surface *dst, bool update = true ) override {};
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void show( int x, int y, SDL_Surface *dst, bool update = true ) override {};
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bool nextFrame() override {return false;};
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void close() override {};
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bool wait() override {return false;};
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bool open(const VideoPath & name, bool scale = false) override {return false;};
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};
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#ifndef DISABLE_VIDEO
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struct AVFormatContext;
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struct AVCodecContext;
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struct AVCodec;
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struct AVFrame;
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struct AVIOContext;
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VCMI_LIB_NAMESPACE_BEGIN
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class CInputStream;
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VCMI_LIB_NAMESPACE_END
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class CVideoPlayer final : public IMainVideoPlayer
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{
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int stream; // stream index in video
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AVFormatContext *format;
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AVCodecContext *codecContext; // codec context for stream
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const AVCodec *codec;
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AVFrame *frame;
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struct SwsContext *sws;
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AVIOContext * context;
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VideoPath fname; //name of current video file (empty if idle)
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// Destination. Either overlay or dest.
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SDL_Texture *texture;
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SDL_Surface *dest;
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Rect destRect; // valid when dest is used
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Rect pos; // destination on screen
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/// video playback currnet progress, in seconds
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double frameTime;
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bool doLoop; // loop through video
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bool playVideo(int x, int y, bool stopOnKey, bool overlay);
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bool open(const VideoPath & fname, bool loop, bool useOverlay = false, bool scale = false);
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public:
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CVideoPlayer();
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~CVideoPlayer();
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bool init();
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bool open(const VideoPath & fname, bool scale = false) override;
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void close() override;
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bool nextFrame() override; // display next frame
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void show(int x, int y, SDL_Surface *dst, bool update = true) override; //blit current frame
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void redraw(int x, int y, SDL_Surface *dst, bool update = true) override; //reblits buffer
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void update(int x, int y, SDL_Surface *dst, bool forceRedraw, bool update = true, std::function<void()> onVideoRestart = nullptr) override; //moves to next frame if appropriate, and blits it or blits only if redraw parameter is set true
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// Opens video, calls playVideo, closes video; returns playVideo result (if whole video has been played)
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bool openAndPlayVideo(const VideoPath & name, int x, int y, EVideoType videoType) override;
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std::pair<std::unique_ptr<ui8 []>, si64> getAudio(const VideoPath & videoToOpen) override;
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Point size() override;
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//TODO:
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bool wait() override {return false;};
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int curFrame() const override {return -1;};
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int frameCount() const override {return -1;};
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// public to allow access from ffmpeg IO functions
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std::unique_ptr<CInputStream> data;
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std::unique_ptr<CInputStream> dataAudio;
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};
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#endif
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