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| author | Hans de Goede | 2008-07-04 23:39:08 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab | 2008-07-20 12:17:06 +0200 |
| commit | 46ccdafa71c1c95de002ce7a31e700cf5c8195df (patch) | |
| tree | 053c0f6740d4bcda3f966a789e34f75e7ff4de60 /drivers/media/video/gspca/pac207.c | |
| parent | V4L/DVB (8197): gspca: pac207 frames no more decoded in the subdriver. (diff) | |
| download | kernel-qcow2-linux-46ccdafa71c1c95de002ce7a31e700cf5c8195df.tar.gz kernel-qcow2-linux-46ccdafa71c1c95de002ce7a31e700cf5c8195df.tar.xz kernel-qcow2-linux-46ccdafa71c1c95de002ce7a31e700cf5c8195df.zip | |
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>
Diffstat (limited to 'drivers/media/video/gspca/pac207.c')
| -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 0135ba599e81..ab83d7b69348 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 |