Hi,
> Someone suggested to me that doing "modprobe gspca vflip=1" would help
> but it doesn't seem to come as an option ?
Attached patch, against latest GSPCA (1.00.20), fixes this. It
introduces ``vflip'' module parameter, which controls vertical flipping
for devices using pixart decompresser.
Please, try out "modprobe gspca vflip=1" with proposed patch.
--
Sergey Lungu
diff -ur gspcav1-20071224.orig/decoder/gspcadecoder.c gspcav1-20071224/decoder/gspcadecoder.c
--- gspcav1-20071224.orig/decoder/gspcadecoder.c 2007-12-24 16:35:27.000000000 +0300
+++ gspcav1-20071224/decoder/gspcadecoder.c 2008-07-04 21:38:07.000000000 +0400
@@ -589,12 +589,18 @@
unsigned char *inp = myframe->data;
struct code_table_t *table = myframe->decoder->table;
unsigned short word;
- int row;
+ int row, inc = width;
+
/* skip header */
inp += 16;
/* and ask to go at pixel +1 ?? */
outp++;
+ if (myframe->spca50x_dev->vflip != 0) {
+ outp += width * (height - 1) - 1;
+ inc = -width;
+ }
+
/* iterate over all rows */
for (row = 0; row < height; row++) {
word = getShort(inp);
@@ -606,12 +612,10 @@
case 0x1EE1:
inp += pac_decompress_row(table, inp, outp, width);
break;
-
default:
-
return -1;
}
- outp += width;
+ outp += inc;
}
return 0;
diff -ur gspcav1-20071224.orig/gspca_core.c gspcav1-20071224/gspca_core.c
--- gspcav1-20071224.orig/gspca_core.c 2007-12-24 19:56:47.000000000 +0300
+++ gspcav1-20071224/gspca_core.c 2008-07-04 21:38:07.000000000 +0400
@@ -105,6 +105,9 @@
/* force sensor id*/
static int force_sensor_id=-1;
static int force_gamma_id=-1;
+/* Flip image vertically */
+static int vflip = 0;
+
module_param(autoexpo, int, 0644);
module_param(debug, int, 0644);
module_param(force_rgb, int, 0644);
@@ -127,6 +130,7 @@
#endif
module_param(force_sensor_id, int, 0644);
module_param(force_gamma_id, int, 0644);
+module_param(vflip, int, 0644);
MODULE_PARM_DESC(autoexpo,
"Enable/Disable auto exposure (default=1: enabled) (PC-CAM 600/Zc03xx/spca561a/Etoms Only !!!)");
@@ -154,6 +158,7 @@
#endif /* SPCA5XX_ENABLE_REGISTERPLAY */
MODULE_PARM_DESC(force_gamma_id, "Forced assigning ID of contrast settings (0=default,1,2,3) Zc03xx only");
MODULE_PARM_DESC(force_sensor_id, "Forced assigning ID sensor (Zc03xx only). Dangerous, only for experts !!!");
+MODULE_PARM_DESC(vflip, "Flip image vertically");
/****************/
MODULE_AUTHOR
@@ -4281,6 +4286,7 @@
spca50x->last_times = 0;
spca50x->dtimes = 0;
spca50x->autoexpo = autoexpo;
+ spca50x->vflip = vflip;
init_MUTEX(&spca50x->lock); /* to 1 == available */
init_MUTEX(&spca50x->buf_lock);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 10)
diff -ur gspcav1-20071224.orig/gspca.h gspcav1-20071224/gspca.h
--- gspcav1-20071224.orig/gspca.h 2007-12-24 19:56:47.000000000 +0300
+++ gspcav1-20071224/gspca.h 2008-07-04 21:38:07.000000000 +0400
@@ -417,6 +417,7 @@
int whiteness;
int exposure; // used by spca561
int autoexpo;
+ int vflip;
int qindex;
int width; /* use here for the init of each frame */
int height;
