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-rw-r--r--pnmshow24.c90
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);
+}