krfb/libvncserver/pnmshow.c

   1 #include <stdio.h>
   2 #include "rfb.h"
   3 #include "keysym.h"
   4
   5 void HandleKey(Bool down,KeySym key,rfbClientPtr cl)
   6 {
   7   if(down && (key==XK_Escape || key=='q' || key=='Q'))
   8     rfbCloseClient(cl);
   9 }
  10
  11 int main(int argc,char** argv)
  12 {
  13   FILE* in=stdin;
  14   int i,j,k,width,height,paddedWidth;
  15   unsigned char buffer[1024];
  16   rfbScreenInfoPtr rfbScreen;
  17
  18   if(argc>1) {
  19     in=fopen(argv[1],"rb");
  20     if(!in) {
  21       printf("Couldn't find file %s.\n",argv[1]);
  22       exit(1);
  23     }
  24   }
  25
  26   fgets(buffer,1024,in);
  27   if(strncmp(buffer,"P6",2)) {
  28     printf("Not a ppm.\n");
  29     exit(2);
  30   }
  31
  32   /* skip comments */
  33   do {
  34     fgets(buffer,1024,in);
  35   } while(buffer[0]=='#');
  36
  37   /* get width & height */
  38   sscanf(buffer,"%d %d",&width,&height);
  39   fprintf(stderr,"Got width %d and height %d.\n",width,height);
  40   fgets(buffer,1024,in);
  41
  42   /* vncviewers have problems with widths which are no multiple of 4. */
  43   paddedWidth = width;
  44   if(width&3)
  45     paddedWidth+=4-(width&3);
  46
  47   /* initialize data for vnc server */
  48   rfbScreen = rfbGetScreen(&argc,argv,paddedWidth,height,8,3,4);
  49   if(argc>1)
  50     rfbScreen->desktopName = argv[1];
  51   else
  52     rfbScreen->desktopName = "Picture";
  53   rfbScreen->rfbAlwaysShared = TRUE;
  54   rfbScreen->kbdAddEvent = HandleKey;
  55
  56   /* enable http */
  57   rfbScreen->httpDir = "./classes";
  58
  59   /* allocate picture and read it */
  60   rfbScreen->frameBuffer = (char*)malloc(paddedWidth*4*height);
  61   fread(rfbScreen->frameBuffer,width*3,height,in);
  62   fclose(in);
  63
  64   /* correct the format to 4 bytes instead of 3 (and pad to paddedWidth) */
  65   for(j=height-1;j>=0;j--) {
  66     for(i=width-1;i>=0;i--)
  67       for(k=2;k>=0;k--)
  68         rfbScreen->frameBuffer[(j*paddedWidth+i)*4+k]=
  69           rfbScreen->frameBuffer[(j*width+i)*3+k];
  70     for(i=width*4;i<paddedWidth*4;i++)
  71       rfbScreen->frameBuffer[j*paddedWidth*4+i]=0;
  72   }
  73
  74   /* initialize server */
  75   rfbInitServer(rfbScreen);
  76
  77   /* run event loop */
  78   rfbRunEventLoop(rfbScreen,40000,FALSE);
  79
  80   return(0);
  81 }