mirror of
https://github.com/vcmi/vcmi.git
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144 lines
4.3 KiB
C++
144 lines
4.3 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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struct SDL_Surface;
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class IVideoPlayer
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{
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public:
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virtual bool open(std::string 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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std::string fname; //name of current video file (empty if idle)
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virtual void update(int x, int y, SDL_Surface *dst, bool forceRedraw, bool update = true){}
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virtual bool openAndPlayVideo(std::string name, int x, int y, SDL_Surface *dst, bool stopOnKey = false, bool scale = false)
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{
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return false;
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}
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};
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class CEmptyVideoPlayer : 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(std::string name, bool scale = false) override {return false;};
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};
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#ifndef DISABLE_VIDEO
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#include "../lib/filesystem/CInputStream.h"
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#include <SDL.h>
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#include <SDL_video.h>
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extern "C" {
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#include <libavformat/avformat.h>
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#include <libswscale/swscale.h>
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}
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//compatibility for libav 9.18 in ubuntu 14.04, 52.66.100 is ffmpeg 2.2.3
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#if (LIBAVUTIL_VERSION_INT < AV_VERSION_INT(52, 66, 100))
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inline AVFrame * av_frame_alloc()
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{
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return avcodec_alloc_frame();
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}
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inline void av_frame_free(AVFrame ** frame)
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{
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av_free(*frame);
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*frame = nullptr;
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}
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#endif // VCMI_USE_OLD_AVUTIL
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//fix for travis-ci
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#if (LIBAVUTIL_VERSION_INT < AV_VERSION_INT(52, 0, 0))
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#define AVPixelFormat PixelFormat
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#define AV_PIX_FMT_NONE PIX_FMT_NONE
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#define AV_PIX_FMT_YUV420P PIX_FMT_YUV420P
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#define AV_PIX_FMT_BGR565 PIX_FMT_BGR565
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#define AV_PIX_FMT_BGR24 PIX_FMT_BGR24
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#define AV_PIX_FMT_BGR32 PIX_FMT_BGR32
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#define AV_PIX_FMT_RGB565 PIX_FMT_RGB565
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#define AV_PIX_FMT_RGB24 PIX_FMT_RGB24
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#define AV_PIX_FMT_RGB32 PIX_FMT_RGB32
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#endif
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class CVideoPlayer : 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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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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// Destination. Either overlay or dest.
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SDL_Texture *texture;
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SDL_Surface *dest;
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SDL_Rect destRect; // valid when dest is used
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SDL_Rect pos; // destination on screen
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int refreshWait; // Wait several refresh before updating the image
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int refreshCount;
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bool doLoop; // loop through video
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bool playVideo(int x, int y, SDL_Surface *dst, bool stopOnKey);
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bool open(std::string 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(std::string 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) 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(std::string name, int x, int y, SDL_Surface *dst, bool stopOnKey = false, bool scale = false) 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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};
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#endif
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