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/*
xfree 4.0 dga fullscreen mode
Copyright (C) 2000 Martin Vogt, Christian Gerlach
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published by
the Free Software Foundation.
For more information look at the file COPYRIGHT in this package
*/
#ifndef __IMAGEDGAFULL_H
#define __IMAGEDGAFULL_H
#include "xinit.h"
#include "../imageBase.h"
#include <stdio.h>
#include <unistd.h>
#include <limits.h>
#include <sys/types.h>
#define DGA_MINMAJOR 2
#define DGA_MINMINOR 0
/**
Displays and renders X11 images in software with the help
of the ditherWrapper class. It switches to xfree 4.0 dga 2.0
and needs root priviliges for that
*/
class ImageDGAFull : public ImageBase {
XWindow* m_pxWindow;
// DGA status
int m_iMajorVersion;
int m_iMinorVersion;
int m_iEventBase;
int m_iErrorBase;
int m_iScreen;
Display *m_pDisplay;
int m_iNumberModes;
#ifdef X11_DGA2
XDGAMode *m_pDGAModes;
XDGADevice *m_pDevice;
#endif
int m_iScreenWidth;
int m_iScreenHeight;
char *m_pAddr; // Base address of the screen
// DGA parameter
int m_iVideoWidth;
int m_iVideoHeight;
int m_iBytesPerLine;
int m_iBytesPerRow; // Size of one image line
int m_iBytesPerPixel;
int m_iOffsetScreen;
int m_iOffsetLine;
char *m_pStartAddr; // Start address for a centered image
int m_iImageMode;
int m_iMode;
bool m_bZoom;
bool m_bAllowZoom;
bool m_bIsActive;
int lSupport;
DitherWrapper* ditherWrapper;
public:
ImageDGAFull();
~ImageDGAFull();
void init(XWindow *xWindow, YUVPicture* pic = NULL);
int support();
int openImage(int mode);
int closeImage();
void ditherImage(YUVPicture* pic);
void putImage();
int active() { return m_bIsActive; }
private:
// Tries to find a fullscreen-mode which matches the resolution best
int findMode(int width, int height, int bpp);
// Returns TRUE if an event is waiting
int event();
// Returns the start address of the upper left corner of the video frame
unsigned char *address();
// Number of bytes from the end of a row to the beginning of next one
int offset();
// Disables DGA-View (performs a mode-switch if neccesary)
void stop();
};
#endif
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