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Commit ebb78c5a authored by Jean-François Moine's avatar Jean-François Moine Committed by Mauro Carvalho Chehab
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V4L/DVB: gspca - t613: Simplify the scan of isoc packets 



Signed-off-by: default avatarJean-François Moine <moinejf@free.fr>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 98388241

drivers/media/video/gspca/t613.c

+8 −17
Original line number Diff line number Diff line
@@ -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);

}