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Date:      Thu, 23 Feb 2012 19:54:42 +0100 (CET)
From:      Juergen Lock <nox@jelal.kn-bremen.de>
To:        gjasny@googlemail.com
Cc:        freebsd-multimedia@freebsd.org, kwm@freebsd.org
Subject:   Re: v4l_compat lacks V4L2_PIX_FMT_JL2005BCD (and others)
Message-ID:  <201202231854.q1NIsgc8088888@triton8.kn-bremen.de>
In-Reply-To: <4F4131AA.5080207@googlemail.com>
References:  <4F32E19A.4050208@googlemail.com> <4F3628F4.4000303@freebsd.org> <4F380CD9.8030308@googlemail.com> <201202122003.39874.hselasky@c2i.net>

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In article <4F4131AA.5080207@googlemail.com> you write:
>On 2/12/12 8:03 PM, Hans Petter Selasky wrote:
>> On Sunday 12 February 2012 20:02:49 Gregor Jasny wrote:
>>> I prepared an updated v4l_compat archive based on Linux 3.3-rc3 (diff
>>> attached). You can download the tarball here:
>>>
>>> http://alioth.debian.org/~gjasny-guest/v4l_compat-3.3-rc3.tar.gz
>>>
>>> Would it be possible to push this into FreeBSD 9 ports tree?
>> 
>> Hi,
>> 
>> Looks good, though it should be compile tested with some existing V4L 
>> applications first, like VLC, mplayer, pwcview ...
>
>I prepared another tarball (fixes ivtv header and directory structure):
>http://alioth.debian.org/~gjasny-guest/v4l_compat-3.3-rc4.tar.gz
>
>I successfully build libv4l, webcamd and pwcview with it.

Hi!

 I finally got around looking at this and found at least two patches
are missing in your tarball:

diff -upr v4l_compat-3.3-rc4/linux/dvb/frontend.h /usr/local/include/linux/dvb/frontend.h
--- v4l_compat-3.3-rc4/linux/dvb/frontend.h	2012-02-19 16:19:51.000000000 +0100
+++ /usr/local/include/linux/dvb/frontend.h	2011-09-18 06:15:16.000000000 +0200
@@ -396,7 +373,13 @@ struct dtv_properties {
 };
 
 #define FE_SET_PROPERTY		   _IOW('o', 82, struct dtv_properties)
-#define FE_GET_PROPERTY		   _IOR('o', 83, struct dtv_properties)
+/* 
+ * This is broken on linux as well but they workaround it in the driver.
+ * Since this is impossible to do on FreeBSD fix the header instead.
+ * Detailed and discussion :
+ * http://lists.freebsd.org/pipermail/freebsd-multimedia/2010-April/010958.html
+ */
+#define FE_GET_PROPERTY		   _IOW('o', 83, struct dtv_properties)
 
 
 /**
diff -upr v4l_compat-3.3-rc4/linux/input.h /usr/local/include/linux/input.h
--- v4l_compat-3.3-rc4/linux/input.h	2012-02-19 16:18:52.000000000 +0100
+++ /usr/local/include/linux/input.h	2011-09-18 06:15:16.000000000 +0200
@@ -140,8 +140,12 @@ struct input_keymap_entry {
 #define EVIOCGREP		_IOR('E', 0x03, unsigned int[2])	/* get repeat settings */
 #define EVIOCSREP		_IOW('E', 0x03, unsigned int[2])	/* set repeat settings */
 
-#define EVIOCGKEYCODE		_IOR('E', 0x04, unsigned int[2])        /* get keycode */
-#define EVIOCGKEYCODE_V2	_IOR('E', 0x04, struct input_keymap_entry)
+/*
+ * These two need to be _IOWR not _IOR (they're wrong on Linux too but
+ * there the driver doesn't care.)
+ */
+#define EVIOCGKEYCODE		_IOWR('E', 0x04, unsigned int[2])       /* get keycode */
+#define EVIOCGKEYCODE_V2	_IOWR('E', 0x04, struct input_keymap_entry)
 #define EVIOCSKEYCODE		_IOW('E', 0x04, unsigned int[2])        /* set keycode */
 #define EVIOCSKEYCODE_V2	_IOW('E', 0x04, struct input_keymap_entry)
 

 With those applied I build- and runtime-tested successfully (from
ports) v4l-utils (ir-keytable needs the second patch), vdr (which
needs the first), and mplayer for dvb and pwcview for v4l2.

 Thanx! :)
	Juergen

PS: patch also at:

	http://people.freebsd.org/~nox/tmp/v4l_compat-3.3-rc4.patch



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