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127 lines
3.1 KiB
127 lines
3.1 KiB
/**
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* @example pnmshow.c
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*/
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#include <stdio.h>
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#include <rfb/rfb.h>
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#include <rfb/keysym.h>
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#ifndef HAVE_HANDLEKEY
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static void HandleKey(rfbBool down,rfbKeySym key,rfbClientPtr cl)
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{
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if(down && (key==XK_Escape || key=='q' || key=='Q'))
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rfbCloseClient(cl);
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}
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#endif
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int main(int argc,char** argv)
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{
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FILE* in=stdin;
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int i,j,k,l,width,height,paddedWidth;
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char buffer[1024];
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rfbScreenInfoPtr rfbScreen;
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enum { BW, GRAY, TRUECOLOUR } picType=TRUECOLOUR;
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int bytesPerPixel,bitsPerPixelInFile;
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if(argc>1) {
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in=fopen(argv[1],"rb");
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if(!in) {
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printf("Couldn't find file %s.\n",argv[1]);
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exit(1);
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}
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}
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fgets(buffer,1024,in);
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if(!strncmp(buffer,"P6",2)) {
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picType=TRUECOLOUR;
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bytesPerPixel=4; bitsPerPixelInFile=3*8;
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} else if(!strncmp(buffer,"P5",2)) {
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picType=GRAY;
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bytesPerPixel=1; bitsPerPixelInFile=1*8;
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} else if(!strncmp(buffer,"P4",2)) {
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picType=BW;
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bytesPerPixel=1; bitsPerPixelInFile=1;
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} else {
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printf("Not a ppm.\n");
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exit(2);
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}
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/* skip comments */
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do {
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fgets(buffer,1024,in);
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} while(buffer[0]=='#');
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/* get width & height */
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sscanf(buffer,"%d %d",&width,&height);
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rfbLog("Got width %d and height %d.\n",width,height);
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if(picType!=BW)
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fgets(buffer,1024,in);
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else
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width=1+((width-1)|7);
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/* vncviewers have problems with widths which are no multiple of 4. */
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paddedWidth = width;
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if(width&3)
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paddedWidth+=4-(width&3);
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/* initialize data for vnc server */
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rfbScreen = rfbGetScreen(&argc,argv,paddedWidth,height,8,(bitsPerPixelInFile+7)/8,bytesPerPixel);
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if(!rfbScreen)
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return 0;
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if(argc>1)
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rfbScreen->desktopName = argv[1];
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else
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rfbScreen->desktopName = "Picture";
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rfbScreen->alwaysShared = TRUE;
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rfbScreen->kbdAddEvent = HandleKey;
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/* enable http */
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rfbScreen->httpDir = "../webclients";
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/* allocate picture and read it */
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rfbScreen->frameBuffer = (char*)malloc(paddedWidth*bytesPerPixel*height);
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fread(rfbScreen->frameBuffer,width*bitsPerPixelInFile/8,height,in);
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fclose(in);
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if(picType!=TRUECOLOUR) {
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rfbScreen->serverFormat.trueColour=FALSE;
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rfbScreen->colourMap.count=256;
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rfbScreen->colourMap.is16=FALSE;
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rfbScreen->colourMap.data.bytes=malloc(256*3);
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for(i=0;i<256;i++)
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memset(rfbScreen->colourMap.data.bytes+3*i,i,3);
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}
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switch(picType) {
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case TRUECOLOUR:
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/* correct the format to 4 bytes instead of 3 (and pad to paddedWidth) */
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for(j=height-1;j>=0;j--) {
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for(i=width-1;i>=0;i--)
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for(k=2;k>=0;k--)
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rfbScreen->frameBuffer[(j*paddedWidth+i)*4+k]=
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rfbScreen->frameBuffer[(j*width+i)*3+k];
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for(i=width*4;i<paddedWidth*4;i++)
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rfbScreen->frameBuffer[j*paddedWidth*4+i]=0;
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}
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break;
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case GRAY:
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break;
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case BW:
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/* correct the format from 1 bit to 8 bits */
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for(j=height-1;j>=0;j--)
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for(i=width-1;i>=0;i-=8) {
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l=(unsigned char)rfbScreen->frameBuffer[(j*width+i)/8];
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for(k=7;k>=0;k--)
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rfbScreen->frameBuffer[j*paddedWidth+i+7-k]=(l&(1<<k))?0:255;
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}
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break;
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}
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/* initialize server */
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rfbInitServer(rfbScreen);
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/* run event loop */
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rfbRunEventLoop(rfbScreen,40000,FALSE);
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return(0);
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}
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