Kevin Kuphal wrote:
In looking further, recent SVN changes have the skeleton for XDS parsing
but nothing is done with the data. My PVR-150 is putting data into
/dev/vbi so I think my backend is set up for capturing. This may be my
Christmas project to see if I can properly decode the XDS V-chip
information at least in debugging output to see what it says.
The following patch against the vbi utility (from ivtv) will let you do
some quick testing outside of myth.
Bolek
Index: test/vbi.c
===================================================================
--- test/vbi.c (revision 2757)
+++ test/vbi.c (working copy)
@@ -112,16 +112,52 @@
static void decode_xds(struct v4l2_sliced_vbi_data *s)
{
- char c;
+ char c, c1, c2;
+ static int vchip = 0;
//printf("XDS: %02x %02x: ", s->data[0], s->data[1]);
- c = odd_parity(s->data[0]) ? s->data[0] & 0x7F : '?';
- c = printable(c);
+ c1 = odd_parity(s->data[0]) ? s->data[0] & 0x7F : '?';
+ c = printable(c1);
//putchar(c);
- c = odd_parity(s->data[1]) ? s->data[1] & 0x7F : '?';
- c = printable(c);
+ c2 = odd_parity(s->data[1]) ? s->data[1] & 0x7F : '?';
+ c = printable(c2);
//putchar(c);
//putchar('\n');
+
+ if (c1 == 0x01 && c2 == 0x05) {
+ vchip = 1;
+ } else if (vchip) {
+ char rating[32] = "";
+ if ((c1 & 0x5F) == 0x48) {
+ switch (c2 & 0x07) {
+ case 0x01:
+ strcat(rating, "TV-Y");
+ break;
+ case 0x02:
+ strcat(rating, "TV-Y7");
+ break;
+ case 0x03:
+ strcat(rating, "TV-G");
+ break;
+ case 0x04:
+ strcat(rating, "TV-PG");
+ break;
+ case 0x05:
+ strcat(rating, "TV-14");
+ break;
+ case 0x06:
+ strcat(rating, "TV-MA");
+ break;
+ }
+ if ((c1 & 0x20) || (c2 & 0x38)) strcat(rating, "-");
+ if (c1 & 0x20) strcat(rating, "D");
+ if (c2 & 0x08) strcat(rating, "L");
+ if (c2 & 0x10) strcat(rating, "S");
+ if (c2 & 0x20) strcat(rating, "V");
+ }
+ printf("\nVCHIP: %02x %02x %s\n", c1, c2, rating);
+ vchip = 0;
+ }
}
#define CC_SIZE 64
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