From: Hans de Goede <j.w.r.degoede@hhs.nl>
To: Thierry Merle <thierry.merle@free.fr>
Cc: video4linux-list@redhat.com, v4l2 library <v4l2-library@linuxtv.org>
Subject: PATCH: libv4l-pac207-comments.patch
Date: Fri, 04 Jul 2008 13:09:59 +0200 [thread overview]
Message-ID: <486E0507.5050609@hhs.nl> (raw)
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<now with attachment (wipes egg from face)>
Hi,
Add comments to pac207.c about what todays experiments have teached us about
the pac207 compression.
Signed-off-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Regards,
Hans
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[-- Attachment #2: libv4l-pac207-comments.patch --]
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Add comments to pac207.c about what todays experiments have teached us about
the pac207 compression.
Signed-off-by: Hans de Goede <j.w.r.degoede@hhs.nl>
diff -r 61deeffda900 v4l2-apps/lib/libv4l/libv4lconvert/pac207.c
--- a/v4l2-apps/lib/libv4l/libv4lconvert/pac207.c Fri Jul 04 07:21:55 2008 +0200
+++ b/v4l2-apps/lib/libv4l/libv4lconvert/pac207.c Fri Jul 04 13:06:08 2008 +0200
@@ -170,15 +170,12 @@
inp += pac_decompress_row(inp, outp, width);
break;
- default:
+ case 0x2DD2: /* prefix for "stronger" compressed lines, currently the
+ kernel driver programs the cam so that we should not
+ get any of these */
+
+ default: /* corrupt frame */
/* FIXME add error reporting */
- /* Notice this seems to happen with high framerates (low exposure
- setting due to much light and bad compressible images, so most
- likely the usb just cannot keep us and we miss parts of some
- frames (sometimes of many frames in a row) messing things up
- completely. It might be worth to try changing the compression
- balance setting to see if that can compensate for this.
- However currently I cannot reproduce this (no daylight) */
return;
}
outp += width;
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next reply other threads:[~2008-07-04 11:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-04 11:09 Hans de Goede [this message]
-- strict thread matches above, loose matches on Subject: below --
2008-07-04 11:07 PATCH: libv4l-pac207-comments.patch Hans de Goede
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