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| author | Jean-Francois Moine <moinejf@free.fr> | 2008-07-04 20:39:08 +0200 |
|---|---|---|
| committer | Jean-Francois Moine <moinejf@free.fr> | 2008-07-04 20:39:08 +0200 |
| commit | b400c13b300245d494a2b427cd4d7153b84a76ce (patch) | |
| tree | 4754de8113c1a91cfbefe8acd4df0de66254f10a /linux | |
| parent | 436a0b366ed3b6fa7f8e4e93e9c80026f03fc2e6 (diff) | |
| download | mediapointer-dvb-s2-b400c13b300245d494a2b427cd4d7153b84a76ce.tar.gz mediapointer-dvb-s2-b400c13b300245d494a2b427cd4d7153b84a76ce.tar.bz2 | |
gspca: Frame decoding errors when PAC207 in full daylight.
From: Hans de Goede <j.w.r.degoede@hhs.nl>
Signed-off-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Diffstat (limited to 'linux')
| -rw-r--r-- | linux/drivers/media/video/gspca/pac207.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/linux/drivers/media/video/gspca/pac207.c b/linux/drivers/media/video/gspca/pac207.c index 0135ba599..ab83d7b69 100644 --- a/linux/drivers/media/video/gspca/pac207.c +++ b/linux/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 |