MythTV: osdchromakey.h Source File

00001 // -*- Mode: c++ -*-
00002 
00003 #ifndef _OSD_CHROMAKEY_H_
00004 #define _OSD_CHROMAKEY_H_
00005 
00006 #include <QImage>
00007 #include "mythpainter_qimage.h"
00008 #include "mythcontext.h"
00009 #include "videoout_xv.h"
00010 
00011 class ChromaKeyOSD
00012 {
00013   public:
00014     ChromaKeyOSD(VideoOutputXv *vo) :
00015         current_size(QSize()), current_rect(QRect()),
00016         videoOutput(vo), img(NULL), image(NULL), painter(NULL), visible(false)
00017     {
00018         memset(&shm_infos, 0, sizeof(XShmSegmentInfo));
00019     }
00020     ~ChromaKeyOSD(void);
00021 
00022     bool    ProcessOSD(OSD *osd);
00023     XImage *GetImage() { return visible ? img : NULL; }
00024     MythPainter* GetPainter(void) { return (MythPainter*)painter; }
00025 
00026   private:
00027     bool Init(QSize new_size);
00028     void TearDown(void);
00029     bool CreateShmImage(QSize area);
00030     void DestroyShmImage(void);
00031     void BlendOrCopy(uint32_t colour, const QRect &rect);
00032 
00033     QSize              current_size;
00034     QRect              current_rect;
00035     VideoOutputXv     *videoOutput;
00036     XImage            *img;
00037     XShmSegmentInfo    shm_infos;
00038     QImage            *image;
00039     MythQImagePainter *painter;
00040     bool               visible;
00041 };
00042 
00043 #endif // _OSD_CHROMAKEY_H_