diff options
Diffstat (limited to 'mpeglib/lib/util/render/x11/initDisplay.cpp')
| -rw-r--r-- | mpeglib/lib/util/render/x11/initDisplay.cpp | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/mpeglib/lib/util/render/x11/initDisplay.cpp b/mpeglib/lib/util/render/x11/initDisplay.cpp new file mode 100644 index 00000000..d0029eb6 --- /dev/null +++ b/mpeglib/lib/util/render/x11/initDisplay.cpp @@ -0,0 +1,255 @@ +/* + here are the different initialisation routines for different displays + Copyright (C) 1999 Martin Vogt + + 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 + + */ + + + +#include "initDisplay.h" + +#include <iostream> + +using namespace std; + + + +static unsigned long wpixel[256]; + + + + +/* + *-------------------------------------------------------------- + * + * InitColorDisplay -- + * + * Initialized display for full color output. + * + * Results: + * None. + * + * Side effects: + * None. + * + *-------------------------------------------------------------- + */ + +void initColorDisplay(XWindow* xwindow) { + XWindowAttributes winattr; + + + XGetWindowAttributes(xwindow->display, xwindow->window, &winattr); + + xwindow->redMask = winattr.visual->red_mask; + xwindow->greenMask = winattr.visual->green_mask; + xwindow->blueMask = winattr.visual->blue_mask; +} + + + + + + + +/* + *-------------------------------------------------------------- + * + * FindFullColorVisual + * + * Returns a pointer to a full color bit visual on the display + * + * Results: + * See above. + * + * Side effects: + * Unknown. + * + *-------------------------------------------------------------- + */ +Visual* FindFullColorVisual (Display* dpy,int* depth) { + XVisualInfo vinfo; + XVisualInfo *vinfo_ret; + int numitems, maxdepth; + +#if defined(__cplusplus) || defined(c_plusplus) + vinfo.c_class = TrueColor; +#else + vinfo.class = TrueColor; +#endif + + vinfo_ret = XGetVisualInfo(dpy, VisualClassMask, &vinfo, &numitems); + + if (numitems == 0) return NULL; + + maxdepth = 0; + while(numitems > 0) { + if (vinfo_ret[numitems-1].depth > maxdepth) { + maxdepth = vinfo_ret[numitems-1 ].depth; + } + numitems--; + } + XFree((void *) vinfo_ret); + + if (maxdepth < 16) return NULL; + + if (XMatchVisualInfo(dpy, DefaultScreen(dpy), maxdepth, + TrueColor, &vinfo)) { + *depth = maxdepth; + return vinfo.visual; + } + + return NULL; +} + + +/* + *-------------------------------------------------------------- + * + * CreateFullColorWindow + * + * Creates a window capable of handling 32 bit color. + * + * Results: + * See above. + * + * Side effects: + * Unknown. + * + *-------------------------------------------------------------- + */ +void CreateFullColorWindow (XWindow* xwindow) { + int depth; + Visual *visual; + XSetWindowAttributes xswa; + unsigned long mask; + unsigned int c_class; + int screen; + Display *dpy=xwindow->display; + /* + int x = xinfo->hints.x, + y = xinfo->hints.y; + unsigned int w = xinfo->hints.width, + h = xinfo->hints.height; + */ + screen = XDefaultScreen(dpy); + c_class = InputOutput; /* Could be InputOnly */ + if (xwindow->visual == NULL) { + xwindow->visual = visual = FindFullColorVisual (dpy, &depth); + xwindow->depth = depth; + } else { + visual=xwindow->visual; + depth=xwindow->depth; + } + + if (visual == NULL) { + cout << "visual is null"<<endl; + return; + } + mask = CWBackPixel | CWColormap | CWBorderPixel; + if (xwindow->colormap==0) { + xswa.colormap = XCreateColormap(dpy, + XRootWindow(dpy, screen), + visual, AllocNone); + } else xswa.colormap = xwindow->colormap; + xswa.background_pixel = BlackPixel(dpy, DefaultScreen(dpy)); + xswa.border_pixel = WhitePixel(dpy, DefaultScreen(dpy)); + XSetWindowColormap(xwindow->display,xwindow->window,xwindow->colormap); + + + /* + xwindow->window = XCreateWindow(dpy, RootWindow(dpy, screen), x, y, w, h, + (unsigned int) 1, depth, c_class, + visual, mask, &xswa); + */ +} + + + + + + + +/* + *-------------------------------------------------------------- + * + * InitSimpleDisplay -- + * + * Initialized display, sets up colormap, etc. Use for 8 Bit color + * + * Results: + * None. + * + * Side effects: + * None. + * + *-------------------------------------------------------------- + */ + +void initSimpleDisplay(XWindow* xwindow) { + int ncolors = LUM_RANGE*CB_RANGE*CR_RANGE; + XColor xcolor; + int i, lum_num, cr_num, cb_num; + unsigned char r, g, b; + Colormap dcmap; + Display *display; + ColorTable8Bit colorTable8Bit; + + display = xwindow->display; + + + xwindow->colormap = XDefaultColormap(display, DefaultScreen(display)); + dcmap = xwindow->colormap; + + xcolor.flags = DoRed | DoGreen | DoBlue; + + + //if (xinfo->owncmFlag) goto create_map; + +retry_alloc_colors: + for (i=0; i<ncolors; i++) { + + lum_num = (i / (CR_RANGE*CB_RANGE))%LUM_RANGE; + cr_num = (i / CB_RANGE)%CR_RANGE; + cb_num = i % CB_RANGE; + + colorTable8Bit.ConvertColor(lum_num, cr_num, cb_num, &r, &g, &b); + + xcolor.red = r * 256; + xcolor.green = g * 256; + xcolor.blue = b * 256; + + if ((XAllocColor(display,xwindow->colormap , &xcolor) == 0 + && xwindow->colormap == dcmap)) { + int j; + unsigned long tmp_pixel; + XWindowAttributes xwa; + + // Free colors. + for (j = 0; j < i; j ++) { + tmp_pixel = wpixel[j]; + XFreeColors(display,xwindow->colormap , &tmp_pixel, 1, 0); + } + + + //create_map: + XGetWindowAttributes(display, xwindow->window, &xwa); + xwindow->colormap = XCreateColormap(display, xwindow->window, + xwa.visual, AllocNone); + XSetWindowColormap(display, xwindow->window,xwindow->colormap ); + + goto retry_alloc_colors; + } + xwindow->pixel[i]=xcolor.pixel; + wpixel[i] = xcolor.pixel; + } + +} + + |