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Commits per author per week (path 'tests/bandwidth-server-many-up')

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/* $Id: XWindow.c,v 1.7 2000/03/28 07:22:15 reinelt Exp $ * * X11 Driver for LCD4Linux * * (c) 2000 Herbert Rosmanith <herp@widsau.idv.uni-linz.ac.at> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * * * $Log: XWindow.c,v $ * Revision 1.7 2000/03/28 07:22:15 reinelt * * version 0.95 released * X11 driver up and running * minor bugs fixed * */ /* * * exported fuctions: * * struct LCD XWindow[] * */ /* * * Sun Mar 26 15:28:23 MET 2000 various rewrites * Sat Mar 25 23:58:19 MET 2000 use generic pixmap driver * Thu Mar 23 01:05:07 MET 2000 multithreading, synchronization * Tue Mar 21 22:22:03 MET 2000 initial coding * */ #include <X11/Xlib.h> #include <X11/Xutil.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include <sys/ipc.h> #include <sys/sem.h> #include <sys/shm.h> #include <unistd.h> #include <signal.h> #include "cfg.h" #include "display.h" #include "pixmap.h" #define BARS ( BAR_L | BAR_R | BAR_U | BAR_D | BAR_H2 | BAR_V2 ) static LCD Lcd; Display *dp; int sc; Window w,rw; Visual *vi; int dd; Colormap cm; GC gc,gcb,gch; XColor co[3]; XColor db; Pixmap pmback; unsigned char *BackupLCDpixmap; char *rgbfg,*rgbbg,*rgbhg; int pixel=-1; /*pointsize in pixel*/ int pgap=0; /*gap between points */ int rgap=0; /*row gap between lines*/ int cgap=0; /*column gap between characters*/ int border=0; /*window border*/ int rows=-1,cols=-1; /*rows+cols without background*/ int xres=-1,yres=-1; /*xres+yres (same as self->...)*/ int dimx,dimy; /*total window dimension in pixel*/ int boxw,boxh; /*box width, box height*/ void async_update(); /*PROTO*/ pid_t async_updater_pid=1; int semid=-1; int shmid=-1; void acquire_lock() { struct sembuf sembuf; sembuf.sem_num=0; sembuf.sem_op=-1; sembuf.sem_flg=0; semop(semid,&sembuf,1); /* get mutex */ } void release_lock() { struct sembuf sembuf; sembuf.sem_num=0; sembuf.sem_op=1; sembuf.sem_flg=0; semop(semid,&sembuf,1); /* free mutex */ } void semcleanup() { union semun arg; if (semid>-1) semctl(semid,0,IPC_RMID,arg); } void shmcleanup() { if (shmid>-1) shmctl(shmid,IPC_RMID,NULL); } void quit(int nsig) { printf("pid%d got signal %d\n",getpid(),nsig); semcleanup(); shmcleanup(); exit(0); } void quit_updater() { if (async_updater_pid>1) kill(async_updater_pid,15); } void init_signals() { unsigned int oksig=(1<<SIGBUS)|(1<<SIGFPE)|(1<<SIGSEGV)| (1<<SIGTSTP)|(1<<SIGCHLD)|(1<<SIGCONT)| (1<<SIGTTIN)|(1<<SIGWINCH); int i; for(i=0;i<NSIG;i++) if (((1<<i)&oksig)==0) signal(i,quit); } int init_shm(int nbytes,unsigned char **buf) { shmid=shmget(IPC_PRIVATE,nbytes,SHM_R|SHM_W); if (shmid==-1) { perror("X11: shmget() failed"); return -1; } *buf=shmat(shmid,NULL,0); if (*buf==NULL) { perror("X11: shmat() failed"); return -1; } return 0; } int init_thread(int bufsiz) { union semun semun; semid=semget(IPC_PRIVATE,1,0); if (semid==-1) { perror("X11: semget() failed"); return -1; } semun.val=1; semctl(semid,0,SETVAL,semun); switch(async_updater_pid=fork()) { case -1: perror("X11: fork() failed"); return -1; case 0: async_update(); /*notreached*/ break; default: break; } atexit(quit_updater); return 0; } int init_x(int rows,int cols,int xres,int yres) { XSetWindowAttributes wa; XSizeHints size_hints; XColor co_dummy; XEvent ev; if ((dp=XOpenDisplay(NULL))==NULL) { fprintf(stderr,"can't open display\n"); return -1; } sc=DefaultScreen(dp); gc=DefaultGC(dp,sc); vi=DefaultVisual(dp,sc); dd=DefaultDepth(dp,sc); rw=DefaultRootWindow(dp); cm=DefaultColormap(dp,sc); if (XAllocNamedColor(dp,cm,rgbfg,&co[0],&co_dummy)==False) { fprintf(stderr,"can't alloc foreground color '%s'\n", rgbfg); return -1; } if (XAllocNamedColor(dp,cm,rgbbg,&co[1],&co_dummy)==False) { fprintf(stderr,"can't alloc background color '%s'\n", rgbbg); return -1; } if (XAllocNamedColor(dp,cm,rgbhg,&co[2],&co_dummy)==False) { fprintf(stderr,"can't alloc halfground color '%s'\n", rgbhg); return -1; } if (XAllocNamedColor(dp,cm,"#e0e0e0",&db,&co_dummy)==False) { fprintf(stderr,"can't alloc db color '%s'\n", "#0000ff"); return -1; } boxw=xres*(pixel+pgap)+cgap; boxh=yres*(pixel+pgap)+rgap; dimx=(cols-1)*cgap+cols*xres*(pixel+pgap); dimy=(rows-1)*rgap+rows*yres*(pixel+pgap); wa.event_mask=ExposureMask|ButtonPressMask|ButtonReleaseMask; w=XCreateWindow(dp,rw,0,0,dimx+2*border,dimy+2*border,0,0, InputOutput,vi,CWEventMask,&wa); pmback=XCreatePixmap(dp,w,dimx,dimy,dd); size_hints.min_width=size_hints.max_width=dimx+2*border; size_hints.min_height=size_hints.max_height=dimy+2*border; size_hints.flags=PPosition|PSize|PMinSize|PMaxSize; XSetWMProperties(dp,w,NULL,NULL,NULL,0,&size_hints,NULL,NULL); XSetForeground(dp,gc,co[0].pixel); XSetBackground(dp,gc,co[1].pixel); gcb=XCreateGC(dp,w,0,NULL); XSetForeground(dp,gcb,co[1].pixel); XSetBackground(dp,gcb,co[0].pixel); gch=XCreateGC(dp,w,0,NULL); XSetForeground(dp,gch,co[2].pixel); XSetBackground(dp,gch,co[0].pixel); XFillRectangle(dp,pmback,gcb,0,0,dimx,dimy); XSetWindowBackground(dp,w,co[1].pixel); XClearWindow(dp,w); XStoreName(dp,w,"XLCD4Linux"); XMapWindow(dp,w); XFlush(dp); for(;;) { XNextEvent(dp,&ev); if (ev.type==Expose && ev.xexpose.count==0) break; } XChangeWindowAttributes(dp,w,0,NULL); return 0; } int xlcdinit(LCD *Self) { char *s; if (sscanf(s=cfg_get("size")?:"20x4","%dx%d",&cols,&rows)!=2 || rows<1 || cols<1) { fprintf(stderr,"X11: bad size '%s'\n",s); return -1; } if (sscanf(s=cfg_get("font")?:"5x8","%dx%d",&xres,&yres)!=2 || xres<5 || yres>10) { fprintf(stderr,"X11: bad font '%s'\n",s); return -1; } if (sscanf(s=cfg_get("pixel")?:"4+1","%d+%d",&pixel,&pgap)!=2 || pixel<1 || pgap<0) { fprintf(stderr,"X11: bad pixel '%s'\n",s); return -1; } if (sscanf(s=cfg_get("gap")?:"3x3","%dx%d",&cgap,&rgap)!=2 || cgap<0 || rgap<0) { fprintf(stderr,"X11: bad gap '%s'\n",s); return -1; } border=atoi(cfg_get("border")?:"0"); rgbfg=cfg_get("foreground")?:"#000000"; rgbbg=cfg_get("background")?:"#64b17a"; rgbhg=cfg_get("halfground")?:"#44915a"; if (pix_init(rows,cols,xres,yres)==-1) return -1; if (init_x(rows,cols,xres,yres)==-1) return -1; init_signals(); if (init_shm(rows*cols*xres*yres,&BackupLCDpixmap)==-1) return -1; memset(BackupLCDpixmap,0xff,rows*yres*cols*xres); if (init_thread(rows*cols*xres*yres)==-1) return -1; Self->rows=rows; Self->cols=cols; Self->xres=xres; Self->yres=yres; Lcd=*Self; pix_clear(); return 0; } int xlcdclear() { return pix_clear(); } int xlcdput(int row,int col,char *text) { return pix_put(row,col,text); } int xlcdbar(int type, int row, int col, int max, int len1, int len2) { return pix_bar(type,row,col,max,len1,len2); } int xlcdflush() { int dirty; int i,j,pos; int x,y; acquire_lock(); dirty=pos=0; y=border; for(i=0;i<rows*yres;i++) { x=border; for(j=0;j<cols*xres;j++) { if (LCDpixmap[pos]^BackupLCDpixmap[pos]) { XFillRectangle(dp,w, LCDpixmap[pos]?gc:gch, x,y, pixel,pixel); BackupLCDpixmap[pos]=LCDpixmap[pos]; dirty=1; } x+=pixel+pgap; if ((j+1)%xres==0) x+=cgap; pos++; } y+=pixel+pgap; if ((i+1)%yres==0) y+=rgap; } if (dirty) XFlush(dp); release_lock(); return 0; } /* * this one should only be called from the updater-thread * no user serviceable parts inside */ void update(int x,int y,int width,int height) { int i,j,pos,wpos; int xfrom,yfrom; int xto,yto; int dx,wx,wy; /* * theory of operation: * f:bitpos->pxnr*(pixel+pgap)+(pxnr/xres)*cgap; * f^-1: pxnr -> f^-1(bitpos) = see paper */ x-=border; y-=border; if (x>=dimx || y>=dimy || x+width<0 || y+height<0) { // printf("border only\n"); return; /*border doesnt need update*/ } if (x<0) x=0; if (y<0) y=0; if (x+width>dimx) width=dimx-x; if (y+height>dimy) height=dimy-y; /* * now we have to find out where the box starts * with respects to the LCDpixmap coordinates */ /* upper left corner */ xfrom=xres*(x/boxw); /*start at col.no*/ i=(x%boxw); /*pixelpos rel. char*/ if (i>xres*(pixel+pgap)) /*in cgap zone*/ xfrom+=xres; else { xfrom+=i/(pixel+pgap); /*character element*/ if (i%(pixel+pgap)>=pixel) /*in pgap zone*/ xfrom++; } yfrom=yres*(y/boxh); /*start at row.no*/ i=(y%boxh); /*pixelpos rel. char*/ if (i>yres*(pixel+pgap)) /*in rgap zone*/ yfrom+=yres; else { yfrom+=i/(pixel+pgap); /*character element*/ if (i%(pixel+pgap)>=pixel) /*in pgag zone*/ yfrom++; } /*lower right corner*/ x+=width-1; y+=height-1; xto=xres*(x/boxw)+(x%boxw)/(pixel+pgap); yto=yres*(y/boxh)+(y%boxh)/(pixel+pgap); pos=yfrom*xres*cols+xfrom; wy=border+yfrom*(pixel+pgap)+rgap*(yfrom/yres); wx=border+xfrom*(pixel+pgap)+cgap*(xfrom/xres); wpos=pos; for(i=yfrom;i<=yto;i++) { dx=wx; for(j=xfrom;j<=xto;j++) { XFillRectangle(dp,w, BackupLCDpixmap[wpos++]?gc:gch, dx,wy, pixel,pixel); dx+=pixel+pgap; if ((j+1)%xres==0) dx+=cgap; } wy+=pixel+pgap; if ((i+1)%yres==0) wy+=rgap; pos+=xres*cols; wpos=pos; } } void async_update() { XEvent ev; for(;;) { XWindowEvent(dp,w, ExposureMask, &ev); if (ev.type==Expose) { acquire_lock(); update(ev.xexpose.x,ev.xexpose.y, ev.xexpose.width,ev.xexpose.height); release_lock(); } } } LCD XWindow[] = { { "X11", 0, 0, 0, 0, BARS, xlcdinit, xlcdclear, xlcdput, xlcdbar, xlcdflush }, { NULL } };


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