--- driver/bttv-driver.c	Tue Aug 15 22:29:15 2000
+++ driver/bttv-driver.c~	Wed Sep  6 07:57:05 2000
@@ -72,7 +72,7 @@
 MODULE_PARM(bttv_debug,"i");
 MODULE_PARM(gbuffers,"i");
 MODULE_PARM(gbufsize,"i");
-
+MODULE_PARM(cropfield,"i");
 MODULE_DESCRIPTION("bttv - v4l driver module for bt848/878 based cards");
 MODULE_AUTHOR("Ralph  Metzler & Marcus Metzler & Gerd Knorr");
 
@@ -86,6 +86,8 @@
 static unsigned int fieldnr = 0;
 static unsigned int gbuffers = 2;
 static unsigned int gbufsize = BTTV_MAX_FBUF;
+
+static unsigned int cropfield = 0;
 unsigned int bttv_debug = 0;
 unsigned int bttv_verbose = 1;
 
@@ -643,6 +645,10 @@
 	*(re++)=cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM3);
         *(re++)=0;
   
+  	if(height>cropfield)
+	    height-=cropfield;
+	else
+	    height=0;
 	for (line=0; line < (height<<(1^inter)); line++)
 	{
 		if(line==height)
@@ -735,6 +741,10 @@
 	*(re++)=cpu_to_le32(BT848_RISC_SYNC|BT848_FIFO_STATUS_FM1);
         *(re++)=cpu_to_le32(0);
   
+	if(height>cropfield)
+	    height-=cropfield;
+	else
+	    height=0;
 	for (line=0; line < (height<<(1^inter)); line++)
 	{
 	        if (inter) 
@@ -906,6 +916,12 @@
         *(re++)=cpu_to_le32(0);
 	
 	/* translate bitmap to risc code */
+	
+	if(height>cropfield)
+	    height-=cropfield;
+	else
+	    height=0;
+
         for (line=outofmem=0; line < (height<<inter) && !outofmem; line++)
         {
 		y = line>>inter;