diff options
| author | Hans de Goede <j.w.r.degoede@hhs.nl> | 2008-07-04 18:39:08 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-07-20 07:17:06 -0300 |
| commit | 46ccdafa71c1c95de002ce7a31e700cf5c8195df (patch) | |
| tree | 053c0f6740d4bcda3f966a789e34f75e7ff4de60 | |
| parent | ab8f12cf8e3d33adec382585f9f60f8686a372c3 (diff) | |
V4L/DVB (8198): gspca: Frame decoding errors when PAC207 in full daylight.
Signed-off-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| -rw-r--r-- | drivers/media/video/gspca/pac207.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/media/video/gspca/pac207.c b/drivers/media/video/gspca/pac207.c index 0135ba599e8..ab83d7b6934 100644 --- a/drivers/media/video/gspca/pac207.c +++ b/drivers/media/video/gspca/pac207.c @@ -40,9 +40,17 @@ MODULE_LICENSE("GPL"); #define PAC207_BRIGHTNESS_MAX 255 #define PAC207_BRIGHTNESS_DEFAULT 4 /* power on default: 4 */ -#define PAC207_EXPOSURE_MIN 4 +/* An exposure value of 4 also works (3 does not) but then we need to lower + the compression balance setting when in 352x288 mode, otherwise the usb + bandwidth is not enough and packets get dropped resulting in corrupt + frames. The problem with this is that when the compression balance gets + lowered below 0x80, the pac207 starts using a different compression + algorithm for some lines, these lines get prefixed with a 0x2dd2 prefix + and currently we do not know how to decompress these lines, so for now + we use a minimum exposure value of 5 */ +#define PAC207_EXPOSURE_MIN 5 #define PAC207_EXPOSURE_MAX 26 -#define PAC207_EXPOSURE_DEFAULT 4 /* power on default: 3 ?? */ +#define PAC207_EXPOSURE_DEFAULT 5 /* power on default: 3 ?? */ #define PAC207_EXPOSURE_KNEE 11 /* 4 = 30 fps, 11 = 8, 15 = 6 */ #define PAC207_GAIN_MIN 0 |