From 9832d765f82769799ba15ac9d2e8edf8f7de6898 Mon Sep 17 00:00:00 2001 From: Theodore Kilgore Date: Fri, 13 Mar 2009 13:04:31 -0300 Subject: V4L/DVB (10986): mr97310a: don't discard frame headers on stream output Fix a bug where all frame headers were being discarded, instead of being part of the stream output, on MR97310A cameras. The frame headers contain information which may be useful in processing the video output and therefore should be kept and not discarded. A corresponding patch to the decompression algorithm in libv4lconvert/mr97310a.c corrects the change in frame offset. Signed-off-by: Theodore Kilgore Signed-off-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/mr97310a.c | 22 +++------------------- 1 file changed, 3 insertions(+), 19 deletions(-) (limited to 'drivers/media/video/gspca') diff --git a/drivers/media/video/gspca/mr97310a.c b/drivers/media/video/gspca/mr97310a.c index 5ec5ce6e3ed..2a901a4a6f0 100644 --- a/drivers/media/video/gspca/mr97310a.c +++ b/drivers/media/video/gspca/mr97310a.c @@ -29,9 +29,7 @@ MODULE_LICENSE("GPL"); /* specific webcam descriptor */ struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ - u8 sof_read; - u8 header_read; }; /* V4L2 controls supported by the driver */ @@ -285,7 +283,6 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev, __u8 *data, /* isoc packet */ int len) /* iso packet length */ { - struct sd *sd = (struct sd *) gspca_dev; unsigned char *sof; sof = pac_find_sof(gspca_dev, data, len); @@ -300,25 +297,12 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev, n = 0; frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame, data, n); - sd->header_read = 0; - gspca_frame_add(gspca_dev, FIRST_PACKET, frame, NULL, 0); + /* Start next frame. */ + gspca_frame_add(gspca_dev, FIRST_PACKET, frame, + pac_sof_marker, sizeof pac_sof_marker); 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; - } - gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len); } -- cgit v1.2.3