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freebsd-ports/multimedia/vic/files/patch-am
Roger Hardiman de0b643f57 Rewrite virtual function pointer code so it can compile with EGCS on my 
-current machine.

Also I fixed the code for grabbing from the X11 desktop in 24 bit colour modes.
Previously it gave us a blurred yellow image. Now it can capture
the X11 desktop in full 24 bit colour for both XRGB and XBGR Truecolour.
1999-09-09 06:42:31 +00:00

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--- grabber-x11.cc.orig Thu Sep 9 06:57:14 1999
+++ grabber-x11.cc Wed Sep 8 21:31:27 1999
@@ -0,0 +1,1398 @@
+/*
+ * Copyright (c) 1998 Luigi Rizzo
+ * grabber-x11.cc for vic
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Jim Lowe
+ * 4. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+
+#include "grabber.h"
+#include "Tcl.h"
+#include "device-input.h"
+#include "module.h"
+
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/Xatom.h>
+#include <X11/cursorfont.h>
+#include <tk.h>
+/*** #include "sized_types.h" ***/
+
+/*
+ Netvideo version 3.3
+ Written by Ron Frederick <frederick@parc.xerox.com>
+
+ Machine-specific sized integer type definitions
+ Video utility definitions
+*/
+
+/*
+ * Copyright (c) Xerox Corporation 1992. All rights reserved.
+ *
+ * License is granted to copy, to use, and to make and to use derivative
+ * works for research and evaluation purposes, provided that Xerox is
+ * acknowledged in all documentation pertaining to any such copy or derivative
+ * work. Xerox grants no other licenses expressed or implied. The Xerox trade
+ * name should not be used in any advertising without its written permission.
+ *
+ * XEROX CORPORATION MAKES NO REPRESENTATIONS CONCERNING EITHER THE
+ * MERCHANTABILITY OF THIS SOFTWARE OR THE SUITABILITY OF THIS SOFTWARE
+ * FOR ANY PARTICULAR PURPOSE. The software is provided "as is" without
+ * express or implied warranty of any kind.
+ *
+ * These notices must be retained in any copies of any part of this software.
+ */
+
+typedef signed char int8; /* 8 bit signed int */
+typedef short int16; /* 16 bit signed int */
+typedef int int32; /* 32 bit signed int */
+#if defined(__alpha)
+typedef long int64; /* 64 bit signed int */
+#endif
+
+typedef unsigned char uint8; /* 8 bit unsigned int */
+typedef unsigned short uint16; /* 16 bit unsigned int */
+typedef unsigned int uint32; /* 32 bit unsigned int */
+#if defined(__alpha)
+typedef unsigned long uint64; /* 64 bit unsigned int */
+#endif
+
+/* Mildly gross but moderately portable test for littleendian machines */
+#define LITTLEENDIAN (ntohl(0x12345678) != 0x12345678)
+
+typedef struct {
+ XImage *image;
+ void *shminfo;
+} ximage_t;
+
+/*************************/
+
+#define VID_SMALL 0x01
+#define VID_MEDIUM 0x02
+#define VID_LARGE 0x04
+#define VID_SIZEMASK 0x07
+
+#define VID_GREYSCALE 0x08
+#define VID_COLOR 0x10
+
+#define X11GRAB_FIXED 0
+#define X11GRAB_POINTER 1
+#define X11GRAB_WINDOW 2
+
+
+/*XXX*/
+#define NTSC_WIDTH 320
+#define NTSC_HEIGHT 240
+#define PAL_WIDTH 384
+#define PAL_HEIGHT 288
+#define CIF_WIDTH 352
+#define CIF_HEIGHT 288
+
+
+class X11Grabber : public Grabber {
+ public:
+ X11Grabber(const char* name, const char* format);
+ virtual ~X11Grabber();
+ virtual void start();
+ virtual void stop();
+ protected:
+ virtual int command(int argc, const char*const* argv);
+ virtual int capture();
+ virtual int grab();
+ void format();
+ void setsize();
+
+ void X11Grab_ComputeYUVTable(void) ;
+ int X11Grab_MSBWhite1(void);
+ int X11Grab_LSBWhite1(void);
+ int X11Grab_MSBBlack1(void);
+ int X11Grab_LSBBlack1(void);
+ int X11Grab_Pseudo8(void);
+ int X11Grab_RGB16(void);
+ int X11Grab_TrueXBGR24(void);
+ int X11Grab_TrueXRGB24(void);
+
+ int X11Grab_Initialize(Window rw, int w, int h);
+ typedef enum {
+ grab_none,
+ grab_X11Grab_LSBWhite1,
+ grab_X11Grab_MSBWhite1,
+ grab_X11Grab_LSBBlack1,
+ grab_X11Grab_MSBBlack1,
+ grab_X11Grab_Pseudo8,
+ grab_X11Grab_RGB16,
+ grab_X11Grab_TrueXBGR24,
+ grab_X11Grab_TrueXRGB24
+ } c_grab_type;
+ c_grab_type c_grab;
+
+
+ uint8 *rgb2y_ ;
+ int8 *rgb2u_ ;
+ int8 *rgb2v_ ;
+
+ ximage_t *ximage_ ;
+
+ Display *dpy_ ;
+ int mode_; /* input mode */
+ Window theroot_ ;
+
+// Tcl_Interp *interp_=NULL;
+
+ int screen, xerror ;
+ Window vRoot_ ;
+ Window rootwin_ ;
+ Colormap colormap;
+ Visual *root_vis;
+ XVisualInfo root_visinfo;
+
+ int ncolors_ ;
+ int black, white;
+ XColor *color ;
+ uint8 *col2y_ ;
+ uint16 *col2rgb16_ ;
+
+ u_int basewidth_; /* Height of frame to be captured */
+ u_int baseheight_; /* Width of frame to be captured */
+ u_int decimate_; /* division of base sizes */
+
+ int x_origin_, y_origin_, width_, height_;
+ int root_depth_, root_width, root_height;
+};
+
+class X11Device : public InputDevice {
+ public:
+ X11Device(const char* nickname);
+ virtual int command(int argc, const char*const* argv);
+ protected:
+ const char* name_;
+};
+
+static X11Device find_x11_devices("x11");
+
+X11Device::X11Device(const char* nickname):
+ InputDevice(nickname), name_(nickname)
+{
+ if (free)
+ attributes_ = "\
+size {large normal small cif} \
+format {422}" ;
+ else
+ attributes_ = "disabled";
+}
+
+extern "C" {
+/*** most of this taken from nv:x11-grab.c ***/
+extern ximage_t *VidUtil_AllocXImage(Display *dpy, Visual *vis, int depth,
+ int width, int height, int readonly);
+
+#if 0 /* debugging stuff */
+static int my_Tcl_Eval(Tcl_Interp *interp, char *cmd)
+{
+ fprintf(stderr,"Tcl_Eval <%s>\n", cmd);
+ Tcl_Eval(interp, cmd);
+}
+#define Tcl_Eval my_Tcl_Eval
+#endif
+
+static Window
+VirtualRootWindow(Display *dpy, int screen)
+{
+ static Display *last_dpy=(Display *)NULL;
+ static int last_screen = -1;
+ static Window vRoot=None;
+
+ Atom __SWM_VROOT=None;
+ Window rw, p, *child;
+ unsigned int i, nChildren;
+
+ if ((dpy != last_dpy) || (screen != last_screen)) {
+ vRoot = RootWindow(dpy, screen);
+
+ /* go look for a virtual root */
+ __SWM_VROOT = XInternAtom(dpy, "__SWM_VROOT", False);
+ XQueryTree(dpy, vRoot, &rw, &p, &child, &nChildren);
+ for (i=0; i<nChildren; i++) {
+ Atom actual_type;
+ int actual_format;
+ unsigned long nitems, bytesafter;
+ Window *newRoot=NULL;
+
+ if ((XGetWindowProperty(dpy, child[i], __SWM_VROOT, 0, 1, False,
+ XA_WINDOW, &actual_type, &actual_format,
+ &nitems, &bytesafter,
+ (unsigned char **)&newRoot) == Success)
+ && (newRoot != NULL)) {
+ vRoot = *newRoot;
+ XFree((void *)newRoot);
+ break;
+ }
+ }
+ XFree((void *)child);
+
+ last_dpy = dpy;
+ last_screen = screen;
+ }
+
+ return vRoot;
+}
+
+} /* end extern C */
+
+void
+X11Grabber::X11Grab_ComputeYUVTable(void)
+{
+ int i;
+
+ switch (root_visinfo.c_class) {
+ case StaticColor:
+ case PseudoColor:
+ case StaticGray:
+ case GrayScale:
+ for (i=0; i<ncolors_; i++) color[i].pixel = i;
+ XQueryColors(dpy_, colormap, color, ncolors_);
+ for (i=0; i<ncolors_; i++) {
+ color[i].red = (color[i].red & 0xf800) ;
+ color[i].green = (color[i].green & 0xfc00) >> 5 ;
+ color[i].blue = (color[i].blue & 0xf800) >> 11 ;
+ col2rgb16_[i] = color[i].red + color[i].green + color[i].blue;
+ col2y_[i] = rgb2y_[col2rgb16_[i]];
+ }
+ break;
+ case TrueColor:
+ fprintf(stderr, "TrueColor...\n");
+ break;
+ case DirectColor:
+ fprintf(stderr, "DirectColor...\n");
+ break;
+ }
+}
+
+/*
+ * these are the grabbing functions for the various video formats
+ */
+
+int
+X11Grabber::X11Grab_MSBWhite1()
+{
+ int x, y, row;
+ uint8 *data=(uint8 *)ximage_->image->data, *yp= frame_;
+
+ for (y=0; y<height_; y++) {
+ for (x=0; x<width_; x+=8) {
+ row = *data++;
+
+ yp[0] = 255 * ((row & 0x80)>>7);
+ yp[1] = 255 * ((row & 0x40)>>6);
+ yp[2] = 255 * ((row & 0x20)>>5);
+ yp[3] = 255 * ((row & 0x10)>>4);
+ yp[4] = 255 * ((row & 0x08)>>3);
+ yp[5] = 255 * ((row & 0x04)>>2);
+ yp[6] = 255 * ((row & 0x02)>>1);
+ yp[7] = 255 * (row & 0x01);
+ yp += 8;
+ }
+ }
+
+ return 1;
+}
+
+int
+X11Grabber::X11Grab_MSBBlack1()
+{
+ int x, y, row;
+ uint8 *data=(uint8 *)ximage_->image->data, *yp= frame_;
+
+ for (y=0; y<height_; y++) {
+ for (x=0; x<width_; x+=8) {
+ row = *data++;
+
+ yp[0] = 255 - 255 * ((row & 0x80)>>7);
+ yp[1] = 255 - 255 * ((row & 0x40)>>6);
+ yp[2] = 255 - 255 * ((row & 0x20)>>5);
+ yp[3] = 255 - 255 * ((row & 0x10)>>4);
+ yp[4] = 255 - 255 * ((row & 0x08)>>3);
+ yp[5] = 255 - 255 * ((row & 0x04)>>2);
+ yp[6] = 255 - 255 * ((row & 0x02)>>1);
+ yp[7] = 255 - 255 * (row & 0x01);
+ yp += 8;
+ }
+ }
+
+ return 1;
+}
+
+int
+X11Grabber::X11Grab_LSBWhite1()
+{
+ int x, y, row;
+ uint8 *data=(uint8 *)ximage_->image->data, *yp= frame_ ;
+
+ for (y=0; y<height_; y++) {
+ for (x=0; x<width_; x+=8) {
+ row = *data++;
+
+ yp[7] = 255 * ((row & 0x80)>>7);
+ yp[6] = 255 * ((row & 0x40)>>6);
+ yp[5] = 255 * ((row & 0x20)>>5);
+ yp[4] = 255 * ((row & 0x10)>>4);
+ yp[3] = 255 * ((row & 0x08)>>3);
+ yp[2] = 255 * ((row & 0x04)>>2);
+ yp[1] = 255 * ((row & 0x02)>>1);
+ yp[0] = 255 * (row & 0x01);
+ yp += 8;
+ }
+ }
+
+ return 1;
+}
+
+int
+X11Grabber::X11Grab_LSBBlack1()
+{
+ int x, y, row;
+ uint8 *data=(uint8 *)ximage_->image->data, *yp= frame_;
+
+ for (y=0; y<height_; y++) {
+ for (x=0; x<width_; x+=8) {
+ row = *data++;
+
+ yp[7] = 255 - 255 * ((row & 0x80)>>7);
+ yp[6] = 255 - 255 * ((row & 0x40)>>6);
+ yp[5] = 255 - 255 * ((row & 0x20)>>5);
+ yp[4] = 255 - 255 * ((row & 0x10)>>4);
+ yp[3] = 255 - 255 * ((row & 0x08)>>3);
+ yp[2] = 255 - 255 * ((row & 0x04)>>2);
+ yp[1] = 255 - 255 * ((row & 0x02)>>1);
+ yp[0] = 255 - 255 * (row & 0x01);
+ yp += 8;
+ }
+ }
+
+ return 1;
+}
+
+int
+X11Grabber::X11Grab_Pseudo8()
+{
+ int x, y, p0, p1, p2, p3 ;
+ uint8 *data=(uint8 *)ximage_->image->data, *yp=frame_ ;
+ uint8 *up= (uint8 *)yp + framesize_ ;
+ uint8 *vp= up + (framesize_ >> 2) ;
+
+ X11Grab_ComputeYUVTable();
+
+ for (y=0; y<height_; y += 2) {
+ for (x=0; x<width_ ; x += 2) {
+ yp[0] = col2y_[data[0]];
+ p0 = col2rgb16_[data[0]];
+ yp[1] = col2y_[data[1]];
+ p1 = col2rgb16_[data[1]];
+
+ p2 = col2rgb16_[data[width_]];
+ p3 = col2rgb16_[data[width_ + 1]];
+#if 0 /* average */
+ p0 = ( (p0 >> 1) & 0x7bef ) + ( (p1 >> 1) & 0x7bef ) ;
+ p2 = ( (p2 >> 1) & 0x7bef ) + ( (p3 >> 1) & 0x7bef ) ;
+ p0 = ( (p0 >> 1) & 0x7bef ) + ( (p2 >> 1) & 0x7bef ) ;
+#else /* take the darkest... */
+ if (yp[1] < yp[0]) p0 = p1 ;
+ if (rgb2y_[p2] < rgb2y_[p0]) p0 = p2 ;
+ if (rgb2y_[p3] < rgb2y_[p0]) p0 = p3 ;
+#endif
+ *up++ = rgb2u_[ p0 ];
+ *vp++ = rgb2v_[ p0 ];
+
+ data += 2;
+ yp += 2 ;
+ }
+ for (x=0; x<width_; x += 8) {
+ yp[0] = col2y_[data[0]];
+ yp[1] = col2y_[data[1]];
+ yp[2] = col2y_[data[2]];
+ yp[3] = col2y_[data[3]];
+ yp[4] = col2y_[data[4]];
+ yp[5] = col2y_[data[5]];
+ yp[6] = col2y_[data[6]];
+ yp[7] = col2y_[data[7]];
+ data += 8;
+ yp += 8 ;
+ }
+ }
+
+ return 1;
+}
+
+int
+X11Grabber::X11Grab_RGB16(void)
+{
+ int x, y;
+ uint8 *yp= (uint8 *)frame_ ;
+ uint8 *up= (uint8 *)yp + framesize_ ;
+ uint8 *vp= up + (framesize_ >> 2) ;
+ uint16 *data=(uint16 *)ximage_->image->data, p0, p1, p2, p3;
+
+ for (y=0; y<height_; y+=2) {
+ for (x=0; x<width_; x += 2) {
+ p0 = data[0] ;
+ p1 = data[1] ;
+ p2 = data[ width_] ;
+ p3 = data[ width_ + 1] ;
+ data += 2 ;
+ yp[0] = rgb2y_[ p0 ] ; /* in 565 format */
+ yp[1] = rgb2y_[ p1 ] ; /* in 565 format */
+#if 0
+ /* average the four pixels... */
+ p0 = ( (p0 >> 1) & 0x7bef ) + ( (p1 >> 1) & 0x7bef ) ;
+ p2 = ( (p2 >> 1) & 0x7bef ) + ( (p3 >> 1) & 0x7bef ) ;
+ p0 = ( (p0 >> 1) & 0x7bef ) + ( (p2 >> 1) & 0x7bef ) ;
+#else /* take the darkest... */
+ if (yp[1] < yp[0]) p0 = p1 ;
+ if (rgb2y_[p2] < rgb2y_[p0]) p0 = p2 ;
+ if (rgb2y_[p3] < rgb2y_[p0]) p0 = p3 ;
+#endif
+ *up++ = rgb2u_[ p0 ];
+ *vp++ = rgb2v_[ p0 ];
+ yp += 2 ;
+ }
+ for (x=0; x<width_; x += 8) {
+ yp[0] = rgb2y_[data[0] ];
+ yp[1] = rgb2y_[data[1] ];
+ yp[2] = rgb2y_[data[2] ];
+ yp[3] = rgb2y_[data[3] ];
+ yp[4] = rgb2y_[data[4] ];
+ yp[5] = rgb2y_[data[5] ];
+ yp[6] = rgb2y_[data[6] ];
+ yp[7] = rgb2y_[data[7] ];
+ yp += 8 ;
+ data += 8 ;
+ }
+ }
+
+ return 1;
+}
+
+int
+X11Grabber::X11Grab_TrueXBGR24()
+{
+ int x, y;
+ uint8 *yp= (uint8 *)frame_ ;
+ uint8 *up= (uint8 *)yp + framesize_ ;
+ uint8 *vp= up + (framesize_ >> 2) ;
+ uint16 p0, p1 ;
+ uint32 *data=(uint32 *)ximage_->image->data, d ;
+
+ for (y=0; y<height_; y += 2) {
+ for (x=0; x<width_; x+=2) {
+ d = *data++ ;
+ p0 = ((d<<8) & 0xf100) | ((d>>5) & 0x7e0) | ((d>>19) & 0x1f);
+ *yp++ = rgb2y_[ p0 ];
+
+ d = *data++ ;
+ p1 = ((d<<8) & 0xf100) | ((d>>5) & 0x7e0) | ((d>>19) & 0x1f);
+ *yp++ = rgb2y_[ p1 ];
+
+ /* average the two pixels... */
+ p0 = ( (p0 >> 1) & 0x7bef ) + ( (p1 >> 1) & 0x7bef ) ;
+ *up++ = rgb2u_[ p0 ];
+ }
+ for (x=0; x<width_; x+=2) {
+ d = *data++ ;
+ p0 = ((d<<8) & 0xf100) | ((d>>5) & 0x7e0) | ((d>>19) & 0x1f);
+ *yp++ = rgb2y_[ p0 ];
+
+ d = *data++ ;
+ p1 = ((d<<8) & 0xf100) | ((d>>5) & 0x7e0) | ((d>>19) & 0x1f);
+ *yp++ = rgb2y_[ p1 ];
+
+ /* average the two pixels... */
+ p0 = ( (p0 >> 1) & 0x7bef ) + ( (p1 >> 1) & 0x7bef ) ;
+ *vp++ = rgb2v_[ p0 ];
+ }
+ }
+
+ return 1;
+}
+
+int
+X11Grabber::X11Grab_TrueXRGB24()
+{
+ int x, y;
+ uint8 *yp= (uint8 *)frame_ ;
+ uint8 *up= (uint8 *)yp + framesize_ ;
+ uint8 *vp= up + (framesize_ >> 2) ;
+ uint16 p0, p1 ;
+ uint32 *data=(uint32 *)ximage_->image->data, d ;
+
+ for (y=0; y<height_; y += 2) {
+ for (x=0; x<width_; x+=2) {
+ d = *data++ ;
+ /* -- RED -- -- GREEN -- -- BLUE -- */
+ p0 = ((d>>8) & 0xf100) | ((d>>5) & 0x7e0) | ((d>>3) & 0x1f);
+ *yp++ = rgb2y_[ p0 ];
+
+ d = *data++ ;
+ p1 = ((d>>8) & 0xf100) | ((d>>5) & 0x7e0) | ((d>>3) & 0x1f);
+ *yp++ = rgb2y_[ p1 ];
+
+ /* average the two pixels... */
+ p0 = ( (p0 >> 1) & 0x7bef ) + ( (p1 >> 1) & 0x7bef ) ;
+ *up++ = rgb2u_[ p0 ];
+ }
+ for (x=0; x<width_; x+=2) {
+ d = *data++ ;
+ p0 = ((d>>8) & 0xf100) | ((d>>5) & 0x7e0) | ((d>>3) & 0x1f);
+ *yp++ = rgb2y_[ p0 ];
+
+ d = *data++ ;
+ p1 = ((d>>8) & 0xf100) | ((d>>5) & 0x7e0) | ((d>>3) & 0x1f);
+ *yp++ = rgb2y_[ p1 ];
+
+ /* average the two pixels... */
+ p0 = ( (p0 >> 1) & 0x7bef ) + ( (p1 >> 1) & 0x7bef ) ;
+ *vp++ = rgb2v_[ p0 ];
+ }
+ }
+
+ return 1;
+}
+
+/*
+ * initialization of frame grabber...
+ */
+int
+X11Grabber::X11Grab_Initialize(Window rw, int w, int h)
+{
+ int config = 0 ;
+ XWindowAttributes wattr;
+
+ if (theroot_ != rw) {
+ theroot_ = rw;
+ XGetWindowAttributes(dpy_, theroot_, &wattr);
+ screen = XScreenNumberOfScreen(wattr.screen);
+ colormap = DefaultColormapOfScreen(wattr.screen);
+ ncolors_ = CellsOfScreen(wattr.screen);
+ black = BlackPixelOfScreen(wattr.screen);
+ white = WhitePixelOfScreen(wattr.screen);
+ root_depth_ = wattr.depth;
+ root_width = wattr.width;
+ root_height = wattr.height;
+ root_vis = wattr.visual;
+ vRoot_ = VirtualRootWindow(dpy_, screen);
+
+ if (color != NULL) {
+ free(color);
+ free(col2y_);
+ free(col2rgb16_);
+ }
+ color = (XColor *) malloc(ncolors_*sizeof(XColor));
+ col2y_ = (uint8 *) malloc(ncolors_*sizeof(uint8));
+ col2rgb16_ = (uint16 *) malloc(ncolors_*sizeof(uint16));
+
+ XMatchVisualInfo(dpy_, screen, root_depth_, root_vis->c_class,
+ &root_visinfo);
+ switch (root_depth_) {
+ case 1:
+ if (white == 1) {
+ c_grab = (LITTLEENDIAN) ? grab_X11Grab_LSBWhite1 : grab_X11Grab_MSBWhite1;
+ } else {
+ c_grab = (LITTLEENDIAN) ? grab_X11Grab_LSBBlack1 : grab_X11Grab_MSBBlack1;
+ }
+ config = VID_GREYSCALE;
+ break;
+
+ case 8:
+ switch (root_visinfo.c_class) {
+ case PseudoColor:
+ case GrayScale:
+ case StaticColor:
+ case StaticGray:
+ c_grab = grab_X11Grab_Pseudo8;
+ break;
+ default:
+ c_grab = grab_none;
+ break;
+ }
+ config = VID_GREYSCALE|VID_COLOR;
+ break;
+
+ case 16:
+ c_grab = grab_X11Grab_RGB16;
+ break ;
+
+ case 24:
+ if ((root_visinfo.c_class == TrueColor) &&
+ (root_visinfo.green_mask = 0xff00) &&
+ (root_visinfo.red_mask == 0xff) &&
+ (root_visinfo.blue_mask == 0xff0000)) {
+ c_grab = grab_X11Grab_TrueXBGR24;
+
+ } else if ((root_visinfo.c_class == TrueColor) &&
+ (root_visinfo.green_mask = 0xff00) &&
+ (root_visinfo.red_mask == 0xff0000) &&
+ (root_visinfo.blue_mask == 0xff)) {
+ c_grab = grab_X11Grab_TrueXRGB24;
+ } else
+ c_grab = grab_none;
+ config = VID_GREYSCALE|VID_COLOR;
+ break;
+
+ default:
+ fprintf(stderr, "don't know how to grab %d bits\n",
+ root_depth_);
+ c_grab = grab_none;
+ break;
+ }
+ }
+
+ if ((ximage_ == NULL) || (width_ != w) || (height_ != h)) {
+ width_ = w;
+ height_ = h;
+ if (ximage_ != NULL)
+ VidUtil_DestroyXImage(dpy_, ximage_);
+ ximage_ = VidUtil_AllocXImage(dpy_, root_vis, root_depth_, w, h, False);
+ }
+ return (c_grab == grab_none) ? 0 : config|VID_SMALL|VID_MEDIUM|VID_LARGE;
+}
+
+extern "C" {
+extern void VidUtil_Init(Display *dpy);
+extern void VidUtil_DestroyXImage(Display *dpy, ximage_t *ximage);
+
+#ifdef UNUSED /* not yet... */
+static int
+ErrHandler1(ClientData clientData, XErrorEvent *errevp)
+{
+ xerror = 1;
+ return 0;
+}
+
+static int
+X11Grab_MakeBox(unsigned int x1, unsigned int y1,
+ unsigned int x2, unsigned int y2,
+ int *xp, int *yp, int *wp, int *hp)
+{
+ int w, h;
+
+ w = x2-x1;
+ if (w < 0) {
+ *xp = x2;
+ *wp = -w;
+ } else {
+ *xp = x1;
+ *wp = w;
+ }
+
+ h = y2-y1;
+ if (h < 0) {
+ *yp = y2;
+ *hp = -h;
+ } else {
+ *yp = y1;
+ *hp = h;
+ }
+}
+
+static int
+X11Grab_UpdatePos(Window rw, int x, int y, int w, int h)
+{
+ static char cmd[256];
+
+ if (w < 8) w = 8;
+ if (h < 8) h = 8;
+
+ if (w > root_width/8*8) w = root_width/8*8;
+ if (h > root_height/8*8) h = root_height/8*8;
+
+ w = (w+7)/8*8;
+ h = (h+7)/8*8;
+
+ if (x < 0) x = 0;
+ if (y < 0) y = 0;
+
+ if (x > root_width-w) x = root_width-w;
+ if (y > root_height-h) y = root_height-h;
+
+ sprintf(cmd, "x11grabUpdatePos %d %d %d %d", x, y, w, h);
+ (void) Tcl_Eval(interp, cmd);
+
+ x_origin = x;
+ y_origin = y;
+
+ if ((root != rw) || (width != w) || (height != h)) {
+ X11Grab_Initialize(rw, w, h);
+ return 0;
+ } else
+ return 1;
+}
+
+static int
+X11Grab_FollowPointer(void)
+{
+ Window rw, cw;
+ int x, y, wx, wy;
+ unsigned int mask;
+
+ XQueryPointer(dpy, root, &rw, &cw, &x, &y, &wx, &wy, &mask);
+
+ if (x < x_origin+width/4)
+ x = x-width/4;
+ else if (x >= x_origin+3*width/4)
+ x = x-3*width/4;
+ else
+ x = x_origin;
+
+ if (y < y_origin+height/4)
+ y = y-height/4;
+ else if (y >= y_origin+3*height/4)
+ y = y-3*height/4;
+ else
+ y = y_origin;
+
+ return X11Grab_UpdatePos(rw, x, y, width, height);
+}
+
+static int
+X11Grab_FollowWindow(void)
+{
+ int x, y, w, h;
+ XWindowAttributes wattr, vRoot_wattr;
+ Tk_ErrorHandler handler;
+
+ handler = Tk_CreateErrorHandler(dpy, -1, -1, -1, ErrHandler1, NULL);
+ xerror = 0;
+ XGetWindowAttributes(dpy, target, &wattr);
+ XSync(dpy, False);
+ Tk_DeleteErrorHandler(handler);
+ if ((target == None) || xerror) {
+ target = None;
+ (void) Tcl_Eval(interp,
+ ".grabControls.x11grab.row1.mode.window config -state disabled");
+ (void) Tcl_Eval(interp, "set x11grabMode fixed");
+ return 1;
+ } else {
+ XGetWindowAttributes(dpy, vRoot, &vRoot_wattr);
+ x = wattr.x+vRoot_wattr.x;
+ y = wattr.y+vRoot_wattr.y;
+ w = wattr.width+2*wattr.border_width;
+ h = wattr.height+2*wattr.border_width;
+
+ return X11Grab_UpdatePos(root, x, y, w, h);
+ }
+}
+#endif /* UNUSED ... */
+
+
+#ifdef UNUSED
+/*ARGSUSED*/
+static int
+X11Grab_SetXCmd(ClientData clientData, Tcl_Interp *interp,
+ int argc, char *argv[])
+{
+ int x;
+
+ if (argc != 2) {
+ Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+ " x\"", NULL);
+ return TCL_ERROR;
+ }
+
+ x = atoi(argv[1]);
+ (void) X11Grab_UpdatePos(root, x, y_origin, width, height);
+
+ return TCL_OK;
+}
+
+/*ARGSUSED*/
+static int
+X11Grab_SetYCmd(ClientData clientData, Tcl_Interp *interp,
+ int argc, char *argv[])
+{
+ int y;
+
+ if (argc != 2) {
+ Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+ " y\"", NULL);
+ return TCL_ERROR;
+ }
+
+ y = atoi(argv[1]);
+ (void) X11Grab_UpdatePos(root, x_origin, y, width, height);
+
+ return TCL_OK;
+}
+
+/*ARGSUSED*/
+static int X11Grab_SetWCmd(ClientData clientData, Tcl_Interp *interp,
+ int argc, char *argv[])
+{
+ int w;
+
+ if (argc != 2) {
+ Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+ " width\"", NULL);
+ return TCL_ERROR;
+ }
+
+ w = atoi(argv[1]);
+ (void) X11Grab_UpdatePos(root, x_origin, y_origin, w, height);
+
+ return TCL_OK;
+}
+
+/*ARGSUSED*/
+static int
+X11Grab_SetHCmd(ClientData clientData, Tcl_Interp *interp,
+ int argc, char *argv[])
+{
+ int h;
+
+ if (argc != 2) {
+ Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
+ " height\"", NULL);
+ return TCL_ERROR;
+ }
+
+ h = atoi(argv[1]);
+ (void) X11Grab_UpdatePos(root, x_origin, y_origin, width, h);
+
+ return TCL_OK;
+}
+
+/*ARGSUSED*/
+static int
+X11Grab_SetRegionCmd(ClientData clientData, Tcl_Interp *interp,
+ int argc, char *argv[])
+{
+ unsigned int rootx, rooty;
+ int x, y, w, h, boxDrawn=0;
+ GC xorGC;
+ Cursor cursor;
+ XEvent event;
+
+ cursor = XCreateFontCursor(dpy, XC_cross);
+
+ if (XGrabPointer(dpy, root, False, ButtonPressMask, GrabModeAsync,
+ GrabModeAsync, root, cursor, CurrentTime)!=GrabSuccess) {
+ Tcl_AppendResult(interp, argv[0], ": can't grab mouse", NULL);
+ return TCL_ERROR;
+ }
+
+ xorGC = XCreateGC(dpy, root, 0, NULL);
+ XSetSubwindowMode(dpy, xorGC, IncludeInferiors);
+ XSetForeground(dpy, xorGC, -1);
+ XSetFunction(dpy, xorGC, GXxor);
+
+ XMaskEvent(dpy, ButtonPressMask, &event);
+ rootx = event.xbutton.x_root;
+ rooty = event.xbutton.y_root;
+
+ XChangeActivePointerGrab(dpy, ButtonMotionMask|ButtonReleaseMask, cursor,
+ CurrentTime);
+
+ while (1) {
+ XNextEvent(dpy, &event);
+ switch (event.type) {
+ case MotionNotify:
+ if (boxDrawn) {
+ XDrawRectangle(dpy, root, xorGC, x, y, w, h);
+ boxDrawn = 0;
+ }
+ while (XCheckTypedEvent(dpy, MotionNotify, &event)) ;
+ X11Grab_MakeBox(rootx, rooty, event.xbutton.x_root,
+ event.xbutton.y_root, &x, &y, &w, &h);
+ XDrawRectangle(dpy, root, xorGC, x, y, w, h);
+ boxDrawn = 1;
+ break;
+ case ButtonRelease:
+ if (boxDrawn) {
+ XDrawRectangle(dpy, root, xorGC, x, y, w, h);
+ boxDrawn = 0;
+ }
+ XFlush(dpy);
+ X11Grab_MakeBox(rootx, rooty, event.xmotion.x_root,
+ event.xmotion.y_root, &x, &y, &w, &h);
+ XUngrabPointer(dpy, CurrentTime);
+ XFreeGC(dpy, xorGC);
+ XFreeCursor(dpy, cursor);
+ (void) Tcl_Eval(interp, "set x11grabMode fixed");
+ (void) X11Grab_UpdatePos(root, x, y, w, h);
+ return TCL_OK;
+ }
+ }
+}
+
+/*ARGSUSED*/
+static int X11Grab_SetWindowCmd(ClientData clientData, Tcl_Interp *interp,
+ int argc, char *argv[])
+{
+ int buttons=0;
+ Cursor cursor;
+ XEvent event;
+
+ cursor = XCreateFontCursor(dpy, XC_crosshair);
+ target = None;
+
+ if (XGrabPointer(dpy, vRoot, False, ButtonPressMask|ButtonReleaseMask,
+ GrabModeSync, GrabModeAsync, root, cursor,
+ CurrentTime) != GrabSuccess) {
+ Tcl_AppendResult(interp, argv[0], ": can't grab mouse", NULL);
+ return TCL_ERROR;
+ }
+
+ while ((target == None) || (buttons != 0)) {
+ XAllowEvents(dpy, SyncPointer, CurrentTime);
+ XWindowEvent(dpy, vRoot, ButtonPressMask|ButtonReleaseMask, &event);
+ switch (event.type) {
+ case ButtonPress:
+ if (target == None) target = event.xbutton.subwindow;
+ buttons++;
+ break;
+ case ButtonRelease:
+ if (buttons > 0) buttons--;
+ break;
+ }
+ }
+
+ XUngrabPointer(dpy, CurrentTime);
+ XFreeCursor(dpy, cursor);
+
+ (void) Tcl_Eval(interp,
+ ".grabControls.x11grab.row1.mode.window config -state normal");
+ (void) Tcl_Eval(interp, "set x11grabMode window");
+ (void) X11Grab_FollowWindow();
+ return TCL_OK;
+}
+
+int
+X11Grab_Probe(Tk_Window tkMainWin)
+{
+ Window rw;
+ interp = Tcl_CreateInterp();
+
+ if (tkMainWin == NULL) return 0;
+
+ Tcl_TraceVar(interp, "x11grabMode", TCL_TRACE_WRITES, X11Grab_TraceMode,
+ NULL);
+ Tcl_CreateCommand(interp, "x11grabSetX", X11Grab_SetXCmd, 0, NULL);
+ Tcl_CreateCommand(interp, "x11grabSetY", X11Grab_SetYCmd, 0, NULL);
+ Tcl_CreateCommand(interp, "x11grabSetW", X11Grab_SetWCmd, 0, NULL);
+ Tcl_CreateCommand(interp, "x11grabSetH", X11Grab_SetHCmd, 0, NULL);
+ Tcl_CreateCommand(interp, "x11grabSetRegion", X11Grab_SetRegionCmd, 0,
+ NULL);
+ Tcl_CreateCommand(interp, "x11grabSetWindow", X11Grab_SetWindowCmd, 0,
+ NULL);
+ dpy = Tk_Display(tkMainWin);
+ rootwin = rw = RootWindow(dpy, Tk_ScreenNumber(tkMainWin));
+ VidUtil_Init(dpy);
+ return X11Grab_Initialize(rw, width, height);
+}
+#endif /* UNUSED */
+
+} /* end extern "C" block */
+
+
+int
+X11Device::command(int argc, const char*const* argv)
+{
+ Tcl& tcl = Tcl::instance();
+
+ if ((argc == 3) && (strcmp(argv[1], "open") == 0)) {
+ TclObject* o = new X11Grabber(name_, argv[2]);
+ if (o != 0)
+ tcl.result(o->name());
+ return (TCL_OK);
+ }
+ return (InputDevice::command(argc, argv));
+}
+
+X11Grabber::X11Grabber(const char* name, const char* format)
+{
+ c_grab = grab_none ; /* XXX */
+ theroot_ = None ; /* XXX */
+ ximage_ = NULL ;
+ color = NULL ;
+ col2y_ = NULL ;
+ col2rgb16_ = NULL ;
+
+ width_ = 320 ;
+ height_ = 240 ;
+ x_origin_ = y_origin_ = 0 ; /* XXX */
+
+ if (strcmp(format, "422") && strcmp(format, "cif")) {
+ fprintf(stderr,
+ "vic: x11Grabber: unsupported format: %s\n",
+ format);
+ abort();
+ }
+
+ Tk_Window tkMainWin = Tcl::instance().tkmain() ;
+ Window rw ;
+
+ dpy_ = Tk_Display(tkMainWin);
+ rootwin_ = rw = RootWindow(dpy_, Tk_ScreenNumber(tkMainWin));
+
+ /* Initialize the RGB565 to YUV tables */
+ int i, r, g, b, y, u, v;
+
+ rgb2y_ = new uint8[65536] ;
+ rgb2u_ = new uint8[65536] ;
+ rgb2v_ = new uint8[65536] ;
+
+ i = 0;
+ for (r=4; r<256; r+=8) {
+ for (g=3; g<256; g+=4) { /* XXX */
+ for (b=4; b<256; b+=8) {
+ y = (38*r+75*g+15*b+64)/128;
+ u = 74*(b-y)/128;
+ if (u > 127) u = 127 ;
+ else if (u< -128) u = -128 ;
+ v = (93*(r-y)/128);
+ if (v > 127) v = 127 ;
+ else if (v< -128) v = -128 ;
+ rgb2y_[i] = y ;
+ rgb2u_[i] = u ^ 0x80 ; /* was u */
+ rgb2v_[i] = v ^ 0x80 ;
+ i++;
+ }
+ }
+ }
+
+ X11Grab_Initialize(rw, width_, height_);
+
+ mode_ = X11GRAB_FIXED; /* XXX */
+ decimate_ = 1; /* XXX */
+ basewidth_ = PAL_WIDTH * 2;
+ baseheight_ = PAL_HEIGHT * 2;
+
+}
+
+X11Grabber::~X11Grabber()
+{
+ if (ximage_ != NULL)
+ VidUtil_DestroyXImage(dpy_, ximage_);
+ free(rgb2y_);
+ free(rgb2u_);
+ free(rgb2v_);
+}
+
+void
+X11Grabber::setsize()
+{
+ int rows, columns;
+
+ rows = (baseheight_ / decimate_) &~0xf; /* 0xf, ugh! */
+ columns = (basewidth_ / decimate_) &~0xf;
+
+ /* XXX set size of captured window ? */
+
+ set_size_422(columns, rows); /* was 422... */
+ X11Grab_Initialize(rootwin_, columns, rows); /* XXX */
+
+ allocref(); /* allocate reference frame */
+}
+
+void
+X11Grabber::format()
+{
+
+ baseheight_ = CIF_HEIGHT * 2;
+ basewidth_ = CIF_WIDTH * 2;
+
+ setsize();
+}
+
+
+void
+X11Grabber::start()
+{
+ format();
+ /* XXX prepare for continuous capture */
+ Grabber::start();
+}
+
+void
+X11Grabber::stop()
+{
+ /* XXX stop capture */
+ VidUtil_DestroyXImage(dpy_, ximage_);
+ ximage_ = NULL ;
+ Grabber::stop();
+}
+
+int
+X11Grabber::command(int argc, const char*const* argv)
+{
+ if (argc >= 3) {
+ if (strcmp(argv[1], "decimate") == 0) {
+ int dec = atoi(argv[2]);
+ Tcl& tcl = Tcl::instance();
+ if (dec <= 0) {
+ tcl.resultf("%s: divide by zero", argv[0]);
+ return (TCL_ERROR);
+ }
+ if (dec != decimate_) {
+ decimate_ = dec;
+ if(running_) {
+ stop();
+ setsize();
+ start();
+ }
+ }
+ return (TCL_OK);
+ } else if (strcmp(argv[1], "fixed") == 0) {
+ mode_ = X11GRAB_FIXED;
+
+ int x = atoi(argv[2]);
+ int y = atoi(argv[3]);
+ if (x >= 0 && *argv[2] != '-' && x + width_ <= root_width)
+ x_origin_ = x ;
+ else if ( x <= 0 && -x + width_ <= root_width )
+ x_origin_ = root_width + x - width_ ;
+ if (y >= 0 && *argv[3] != '-' && y + height_ <= root_height)
+ y_origin_ = y ;
+ else if (y <= 0 && -y + height_ <= root_height )
+ y_origin_ = root_height + y - height_ ;
+ fprintf(stderr, "x11 fixed %d %d (root %dx%d)\n",
+ x_origin_, y_origin_, root_width, root_height);
+ return (TCL_OK);
+ } else if (!strcmp(argv[2], "pointer")) {
+ mode_ = X11GRAB_POINTER;
+ return (TCL_OK);
+ } else if (!strcmp(argv[2], "window")) {
+ mode_ = X11GRAB_WINDOW;
+ return (TCL_OK);
+ } else if (strcmp(argv[1], "format") == 0 ||
+ strcmp(argv[1], "type") == 0) {
+ if (running_)
+ format();
+ return (TCL_OK);
+ } else if (strcmp(argv[1], "contrast") == 0) {
+ contrast(atof(argv[2]));
+ return (TCL_OK);
+ }
+ } else if (argc == 2) {
+ if (strcmp(argv[1], "format") == 0 ||
+ strcmp(argv[1], "type") == 0) {
+ return (TCL_OK);
+ }
+ }
+ return (Grabber::command(argc, argv));
+}
+
+/*
+ * captures in CIF or 411 -- color info is half the luma info.
+ */
+int
+X11Grabber::capture()
+{
+ int dograb = 0 ;
+
+#define MY_T uint8
+
+
+ switch (mode_) {
+ case X11GRAB_FIXED:
+ dograb = 1;
+ break;
+#if 0 /* not yet... */
+ case X11GRAB_POINTER:
+ dograb = X11Grab_FollowPointer();
+ break;
+ case X11GRAB_WINDOW:
+ dograb = X11Grab_FollowWindow();
+ break;
+#endif
+ }
+
+ if (1 || dograb) {
+ XImage *image=ximage_->image;
+
+#ifdef USE_SHM
+ if (ximage_->shminfo != NULL)
+ XShmGetImage(dpy_, theroot_, image, x_origin_, y_origin_,AllPlanes);
+ else
+#endif
+ XGetSubImage(dpy_, theroot_, x_origin_, y_origin_,
+ image->width, image->height, AllPlanes,
+ ZPixmap, image, 0, 0);
+ switch (c_grab) {
+ case grab_none: break;
+ case grab_X11Grab_LSBWhite1: X11Grab_LSBWhite1(); break;
+ case grab_X11Grab_MSBWhite1: X11Grab_MSBWhite1(); break;
+ case grab_X11Grab_LSBBlack1: X11Grab_LSBBlack1(); break;
+ case grab_X11Grab_MSBBlack1: X11Grab_MSBBlack1(); break;
+ case grab_X11Grab_Pseudo8: X11Grab_Pseudo8(); break;
+ case grab_X11Grab_RGB16: X11Grab_RGB16(); break;
+ case grab_X11Grab_TrueXBGR24: X11Grab_TrueXBGR24(); break;
+ case grab_X11Grab_TrueXRGB24: X11Grab_TrueXRGB24(); break;
+ }
+ return 1 ;
+ } else
+ return 0;
+}
+
+int X11Grabber::grab()
+{
+ if (capture() == 0)
+ return (0);
+ suppress(frame_);
+ saveblks(frame_);
+ YuvFrame f(media_ts(), frame_, crvec_, outw_, outh_);
+ return (target_->consume(&f));
+}
+
+extern "C" {
+
+#include <sys/ipc.h>
+#ifdef USE_SHM
+#include <sys/shm.h>
+#if defined(sun) && !defined(__svr4__)
+int shmget(key_t, int, int);
+char *shmat(int, char*, int);
+int shmdt(char*);
+int shmctl(int, int, struct shmid_ds*);
+#endif
+#ifdef __osf__
+int XShmGetEventBase(struct _XDisplay *);
+#else
+int XShmGetEventBase(Display *);
+#endif
+#ifdef sgi
+#define XShmAttach __XShmAttach__
+#define XShmDetach __XShmDetach__
+#define XShmPutImage __XShmPutImage__
+#endif
+#include <X11/extensions/XShm.h>
+#ifdef sgi
+#undef XShmAttach
+#undef XShmDetach
+#undef XShmPutImage
+int XShmAttach(Display*, XShmSegmentInfo*);
+int XShmDetach(Display*, XShmSegmentInfo*);
+int XShmPutImage(Display*, Drawable, GC, XImage*, int, int, int, int,
+ int, int, int);
+#endif
+#endif
+
+
+/*ARGSUSED*/
+static int
+ErrHandler(ClientData clientData, XErrorEvent *errevp)
+{
+ return 0;
+}
+
+ximage_t *
+VidUtil_AllocXImage(Display *dpy, Visual *vis, int depth, int width,
+ int height, int readonly)
+{
+ ximage_t *ximage;
+ int ximage_size;
+ Tk_ErrorHandler handler;
+
+ ximage = (ximage_t *) malloc(sizeof(ximage_t));
+ if (ximage == NULL)
+ return NULL;
+
+#ifdef USE_SHM
+ if (1) {
+ XShmSegmentInfo *shminfo;
+
+ ximage->shminfo = shminfo =
+ (XShmSegmentInfo *) malloc(sizeof(XShmSegmentInfo));
+
+ ximage->image = XShmCreateImage(dpy, vis, depth, ZPixmap, 0, shminfo,
+ width, height);
+ ximage_size = ximage->image->bytes_per_line * ximage->image->height;
+
+ shminfo->shmid = shmget(IPC_PRIVATE, ximage_size, IPC_CREAT|0777);
+ if (shminfo->shmid != -1) {
+ shminfo->shmaddr = ximage->image->data =
+ (char *) shmat(shminfo->shmid, 0, 0);
+ shminfo->readOnly = readonly;
+
+ handler = Tk_CreateErrorHandler(dpy, -1, -1, -1, ErrHandler, NULL);
+ XShmAttach(dpy, shminfo);
+ XSync(dpy, False);
+ shmctl(shminfo->shmid, IPC_RMID, 0); /* so it goes away on exit */
+ Tk_DeleteErrorHandler(handler);
+ if (0) { /* so it goes away on exit... */
+ shmdt(shminfo->shmaddr);
+ shmctl(shminfo->shmid, IPC_RMID, 0);
+ XDestroyImage(ximage->image);
+ free(shminfo);
+ }
+ return ximage;
+ } else {
+ XDestroyImage(ximage->image);
+ free(shminfo);
+ ximage->shminfo = NULL ;
+ /* XXX hmmm... something more ? */
+ }
+ }
+#endif
+ {
+ ximage->image = XCreateImage(dpy, vis, depth, ZPixmap, 0, NULL, width,
+ height, (depth == 24) ? 32 : depth, 0);
+ ximage_size = ximage->image->bytes_per_line * ximage->image->height;
+ ximage->image->data = (char *) malloc(ximage_size);
+
+ ximage->shminfo = NULL;
+ }
+
+ return ximage;
+}
+
+void
+VidUtil_DestroyXImage(Display *dpy, ximage_t *ximage)
+{
+#ifdef USE_SHM
+ if (ximage->shminfo != NULL) {
+ XShmSegmentInfo *shminfo=(XShmSegmentInfo *)ximage->shminfo;
+
+ XShmDetach(dpy, shminfo);
+ shmdt(shminfo->shmaddr);
+ shmctl(shminfo->shmid, IPC_RMID, 0);
+ free(shminfo);
+ }
+ ximage->shminfo = NULL ;
+#endif
+
+ XDestroyImage(ximage->image);
+ free(ximage);
+}
+
+
+} /* end extern "C" block */
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