--- fbgrab-1.0.orig/fbgrab.c	2002-04-15 22:22:54.000000000 +0200
+++ fbgrab-1.0/fbgrab.c	2008-12-15 20:18:55.000000000 +0100
@@ -135,6 +135,26 @@
 	fatal_error("Error: Not enough memory or data\n");
 }
 
+static void convert1to32(int width, int height, 
+			    unsigned char *inbuffer, 
+			    unsigned char *outbuffer)
+{
+    unsigned int i, j;
+    unsigned char *ptr = outbuffer;
+
+    for (i=0; i < (unsigned int) height*width >> 3; i++)
+    {
+	for(j=0; j < 8; j++)
+	{
+	    /* BLUE = 0, GREEN = 1, RED = 2 */
+	    *ptr = *(ptr+1) = *(ptr+2) = ((inbuffer[i] >> (7-j)) & 1) ? 255 : 0;
+	    /* ALPHA = 3 */
+	    *(ptr+3) = '\0';
+	    ptr += 4;
+	}
+    }
+}
+
 static void convert1555to32(int width, int height, 
 			    unsigned char *inbuffer, 
 			    unsigned char *outbuffer)
@@ -270,6 +290,10 @@
     
     switch(bits) 
     {
+    case 1:
+	convert1to32(width, height, inbuffer, outbuffer);
+	write_PNG(outbuffer, filename, width, height, interlace);
+	break;
     case 15:
 	convert1555to32(width, height, inbuffer, outbuffer);
 	write_PNG(outbuffer, filename, width, height, interlace);
@@ -405,7 +429,10 @@
 	strncpy(infile, device, MAX_LEN - 1);
     }
     
-    buf_size = width * height * (((unsigned int) bitdepth + 7) >> 3);
+    if (bitdepth == 1)
+	buf_size = (width * height) >> 3;
+    else
+	buf_size = width * height * (((unsigned int) bitdepth + 7) >> 3);
 
     buf_p = malloc(buf_size);