LibVNCServer/LibVNCClient
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pnmshow24.c
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1 
5 #include <stdio.h>
6 #include <rfb/rfb.h>
7 #include <rfb/keysym.h>
8 
9 #ifndef LIBVNCSERVER_ALLOW24BPP
10 int main() {
11  printf("I need the ALLOW24BPP LibVNCServer flag to work\n");
12  exit(1);
13 }
14 #else
15 
16 static void HandleKey(rfbBool down,rfbKeySym key,rfbClientPtr cl)
17 {
18  if(down && (key==XK_Escape || key=='q' || key=='Q'))
19  rfbCloseClient(cl);
20 }
21 
22 int main(int argc,char** argv)
23 {
24  FILE* in=stdin;
25  int j,width,height,paddedWidth;
26  char buffer[1024];
27  rfbScreenInfoPtr rfbScreen;
28 
29  if(argc>1) {
30  in=fopen(argv[1],"rb");
31  if(!in) {
32  printf("Couldn't find file %s.\n",argv[1]);
33  exit(1);
34  }
35  }
36 
37  fgets(buffer,1024,in);
38  if(strncmp(buffer,"P6",2)) {
39  printf("Not a ppm.\n");
40  exit(2);
41  }
42 
43  /* skip comments */
44  do {
45  fgets(buffer,1024,in);
46  } while(buffer[0]=='#');
47 
48  /* get width & height */
49  sscanf(buffer,"%d %d",&width,&height);
50  rfbLog("Got width %d and height %d.\n",width,height);
51  fgets(buffer,1024,in);
52 
53  /* vncviewers have problems with widths which are no multiple of 4. */
54  paddedWidth = width;
55 
56  /* if your vncviewer doesn't have problems with a width
57  which is not a multiple of 4, you can comment this. */
58  if(width&3)
59  paddedWidth+=4-(width&3);
60 
61  /* initialize data for vnc server */
62  rfbScreen = rfbGetScreen(&argc,argv,paddedWidth,height,8,3,3);
63  if(!rfbScreen)
64  return 0;
65  if(argc>1)
66  rfbScreen->desktopName = argv[1];
67  else
68  rfbScreen->desktopName = "Picture";
69  rfbScreen->alwaysShared = TRUE;
70  rfbScreen->kbdAddEvent = HandleKey;
71 
72  /* enable http */
73  rfbScreen->httpDir = "../webclients";
74 
75  /* allocate picture and read it */
76  rfbScreen->frameBuffer = (char*)malloc(paddedWidth*3*height);
77  fread(rfbScreen->frameBuffer,width*3,height,in);
78  fclose(in);
79 
80  /* pad to paddedWidth */
81  if(width != paddedWidth) {
82  int padCount = 3*(paddedWidth - width);
83  for(j=height-1;j>=0;j--) {
84  memmove(rfbScreen->frameBuffer+3*paddedWidth*j,
85  rfbScreen->frameBuffer+3*width*j,
86  3*width);
87  memset(rfbScreen->frameBuffer+3*paddedWidth*(j+1)-padCount,
88  0,padCount);
89  }
90  }
91 
92  /* initialize server */
93  rfbInitServer(rfbScreen);
94 
95  /* run event loop */
96  rfbRunEventLoop(rfbScreen,40000,FALSE);
97 
98  return(0);
99 }
100 #endif