On Tuesday 03 March 2009 18:12:33 kilgota@xxxxxxxxxxxxxxxxxxxxxx wrote:
> contents of file mr97310a.patch follow, for gspca/mr97310a.c
> --------------------------------------------------------
> --- mr97310a.c.old 2009-02-23 23:59:07.000000000 -0600
> +++ mr97310a.c.new 2009-03-03 17:19:06.000000000 -0600
> @@ -302,21 +302,9 @@ static void sd_pkt_scan(struct gspca_dev
> data, n);
> sd->header_read = 0;
> gspca_frame_add(gspca_dev, FIRST_PACKET, frame, NULL, 0);
> - len -= sof - data;
> - data = sof;
> - }
> - if (sd->header_read < 7) {
> - int needed;
> -
> - /* skip the rest of the header */
> - needed = 7 - sd->header_read;
> - if (len <= needed) {
> - sd->header_read += len;
> - return;
> - }
> - data += needed;
> - len -= needed;
> - sd->header_read = 7;
> + /* keep the header, including sof marker, for coming frame */
> + len -= n;
> + data = sof - sizeof pac_sof_marker;;
> }
>
> gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
A few notes:
1. There is an extra semicolon on that last added line.
2. sd->header_read no longer seems necessary.
3. If the SOF marker is split over two transfers then everything falls apart.
I don't know if the camera will allow that to happen, but it's better to be
safe.
-Kyle
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
