comments & new example: pnmshow

1 files changed, 67 insertions, 0 deletions

diff --git a/pnmshow.c b/pnmshow.c
new file mode 100644
index 0000000..0f29d90
--- /dev/null
+++ b/pnmshow.c
@@ -0,0 +1,67 @@
+#include <stdio.h>
+#include "rfb.h"
+#define XK_MISCELLANY
+#include "keysymdef.h"
+
+void HandleKey(Bool down,KeySym key,rfbClientPtr cl)
+{
+  if(down && (key==XK_Escape || key=='q' || key=='Q'))
+    rfbCloseClient(cl);
+}
+
+int main(int argc,char** argv)
+{
+  FILE* in=stdin;
+  int i,width,height;
+  unsigned char buffer[1024];
+  rfbScreenInfoPtr rfbScreen;
+
+  if(argc>1) {
+    in=fopen(argv[1],"rb");
+    if(!in) {
+      printf("Couldn't find file %s.\n",argv[1]);
+      exit(1);
+    }
+  }
+
+  fgets(buffer,1024,in);
+  if(strncmp(buffer,"P6",2)) {
+    printf("Not a ppm.\n");
+    exit(2);
+  }
+
+  /* skip comments */
+  do {
+    fgets(buffer,1024,in);
+  } while(buffer[0]=='#');
+
+  /* get width & height */
+  sscanf(buffer,"%d %d",&width,&height);
+  fprintf(stderr,"Got width %d and height %d (%s).\n",width,height,buffer);
+  fgets(buffer,1024,in);
+
+  /* initialize data for vnc server */
+  rfbScreen = rfbDefaultScreenInit(argc,argv,width,height,8,3,4);
+  if(argc>1)
+    rfbScreen->desktopName = argv[1];
+  else
+    rfbScreen->desktopName = "Picture";
+  rfbScreen->rfbAlwaysShared = TRUE;
+  rfbScreen->kbdAddEvent = HandleKey;
+
+  /* allocate picture and read it */
+  rfbScreen->frameBuffer = (char*)malloc(width*height*4);
+  fread(rfbScreen->frameBuffer,width*3,height,in);
+
+  /* correct the format to 4 bytes instead of 3 */
+  for(i=width*height-1;i>=0;i--) {
+    rfbScreen->frameBuffer[i*4+3]=rfbScreen->frameBuffer[i*3+2];
+    rfbScreen->frameBuffer[i*4+2]=rfbScreen->frameBuffer[i*3+1];
+    rfbScreen->frameBuffer[i*4+1]=rfbScreen->frameBuffer[i*3+0];
+  }
+
+  /* run event loop */
+  runEventLoop(rfbScreen,40000,FALSE);
+
+  return(0);
+}