1 files changed, 90 insertions, 0 deletions
diff --git a/pnmshow24.c b/pnmshow24.c
new file mode 100644
index 0000000..bb6821e
--- /dev/null
+++ b/pnmshow24.c
@@ -0,0 +1,90 @@
+#ifndef ALLOW24BPP
+#error "I need the ALLOW24BPP flag to work"
+#endif
+
+#include <stdio.h>
+#include "rfb.h"
+#include "keysym.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 j,width,height,paddedWidth;
+  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.\n",width,height);
+  fgets(buffer,1024,in);
+
+  /* vncviewers have problems with widths which are no multiple of 4. */
+  paddedWidth = width;
+
+  /* if your vncviewer doesn't have problems with a width
+     which is not a multiple of 4, you can comment this. */
+  if(width&3)
+    paddedWidth+=4-(width&3);
+
+  /* initialize data for vnc server */
+  rfbScreen = rfbGetScreen(argc,argv,paddedWidth,height,8,3,3);
+  if(argc>1)
+    rfbScreen->desktopName = argv[1];
+  else
+    rfbScreen->desktopName = "Picture";
+  rfbScreen->rfbAlwaysShared = TRUE;
+  rfbScreen->kbdAddEvent = HandleKey;
+
+  /* enable http */
+  rfbScreen->httpDir = "./classes";
+
+  /* allocate picture and read it */
+  rfbScreen->frameBuffer = (char*)malloc(paddedWidth*3*height);
+  fread(rfbScreen->frameBuffer,width*3,height,in);
+  fclose(in);
+
+  /* pad to paddedWidth */
+  if(width != paddedWidth) {
+    int padCount = 3*(paddedWidth - width);
+    for(j=height-1;j>=0;j--) {
+      memmove(rfbScreen->frameBuffer+3*paddedWidth*j,
+	      rfbScreen->frameBuffer+3*width*j,
+	      3*width);
+      memset(rfbScreen->frameBuffer+3*paddedWidth*(j+1)-padCount,
+	     0,padCount);
+    }
+  }
+
+  /* initialize server */
+  rfbInitServer(rfbScreen);
+
+  /* run event loop */
+  rfbRunEventLoop(rfbScreen,40000,FALSE);
+
+  return(0);
+}