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V4L/DVB: gspca - t613: Simplify the scan of isoc packets 

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jean-François Moine 2010-06-05 06:56:48 -03:00 committed by Mauro Carvalho Chehab
parent 983882411b
commit ebb78c5a81
1 changed files with 8 additions and 17 deletions
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25
drivers/media/video/gspca/t613.c
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@ -1080,7 +1080,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
u8 *data, /* isoc packet */
int len) /* iso packet length */
{
static u8 ffd9[] = { 0xff, 0xd9 };
int pkt_type;
if (data[0] == 0x5a) {
/* Control Packet, after this came the header again,
@ -1090,22 +1090,13 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
}
data += 2;
len -= 2;
if (data[0] == 0xff && data[1] == 0xd8) {
/* extra bytes....., could be processed too but would be
* a waste of time, right now leave the application and
* libjpeg do it for ourserlves.. */
gspca_frame_add(gspca_dev, LAST_PACKET,
ffd9, 2);
gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
return;
}
if (data[len - 2] == 0xff && data[len - 1] == 0xd9) {
/* Just in case, i have seen packets with the marker,
* other's do not include it... */
len -= 2;
}
gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
if (data[0] == 0xff && data[1] == 0xd8)
pkt_type = FIRST_PACKET;
else if (data[len - 2] == 0xff && data[len - 1] == 0xd9)
pkt_type = LAST_PACKET;
else
pkt_type = INTER_PACKET;
gspca_frame_add(gspca_dev, pkt_type, data, len);
}