From: Mauro Carvalho Chehab <mchehab@infradead.org>
To: Jelle Foks <jelle@foks.8m.com>
Cc: Markus Rechberger <mrechberger@gmail.com>,
Alan Cox <alan@redhat.com>,
"video4linux-list@redhat.com" <video4linux-list@redhat.com>,
"linux-dvb@linuxtv.org" <linux-dvb@linuxtv.org>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [linux-dvb] [PATCH] Userspace tuner
Date: Tue, 18 Sep 2007 19:56:05 -0300 [thread overview]
Message-ID: <1190156165.7883.24.camel@areia> (raw)
In-Reply-To: <46EF8A1F.7040309@foks.8m.com>
> The reason why there is no single 'format conversion library' that
> everybody uses is because of the large differences between requirements
> for such a thing. The line between 'format conversion' and things such
> as a video codec, or image processing is very vague.
Agreed. What I think it should happen is that the userspace library
should focus at the "weird" codecs. E. g. those which uses some sort of
proprietary format. This way, an userspace app may use the userspace
library as a "fallback method" for unknown FOURCC formats. The result
will be probably far away from an optimal result on some cases (since it
probably mean double buffering), but this will at least allow userspace
apps to work. As performance become an issue, the userspace app
developer may use the GPL code at userspace API as a reference to write
a proper optimized format driver for its apps.
Just my 2 cents.
Cheers,
Mauro
next prev parent reply other threads:[~2007-09-18 22:55 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <46C1BCC5.9090709@amd.com>
[not found] ` <1189626560.5160.57.camel@gaivota>
[not found] ` <d9def9db0709121546h67d3d1ceuf001ab1d798fde92@mail.gmail.com>
2007-09-12 23:10 ` [linux-dvb] [PATCH] Userspace tuner Markus Rechberger
2007-09-13 4:58 ` Dâniel Fraga
[not found] ` <d9def9db0709122258l4b05546dq2e370e67a2a1404@mail.gmail.com>
2007-09-13 12:40 ` Johannes Stezenbach
2007-09-13 13:17 ` Markus Rechberger
2007-09-17 22:05 ` Bill Davidsen
2007-09-13 13:13 ` [linux-dvb] " Johannes Stezenbach
2007-09-13 14:12 ` Markus Rechberger
2007-09-13 15:50 ` Manu Abraham
2007-09-13 16:08 ` Markus Rechberger
2007-09-13 16:22 ` Manu Abraham
2007-09-13 16:32 ` Markus Rechberger
2007-09-13 16:52 ` Manu Abraham
2007-09-13 20:36 ` Steven Toth
2007-09-13 23:17 ` Markus Rechberger
2007-09-14 1:03 ` Steven Toth
2007-09-14 6:38 ` Markus Rechberger
2007-09-14 7:57 ` Manu Abraham
2007-09-14 9:15 ` Joerg Roedel
2007-09-14 12:00 ` Manu Abraham
2007-09-14 16:09 ` Markus Rechberger
2007-09-14 18:52 ` Alex Deucher
2007-09-14 18:59 ` Markus Rechberger
2007-09-14 19:38 ` Alex Deucher
2007-09-14 16:13 ` Joerg Roedel
2007-09-14 16:56 ` Manu Abraham
2007-09-14 17:40 ` Joerg Roedel
2007-09-14 11:38 ` Johannes Stezenbach
2007-09-14 16:36 ` Markus Rechberger
2007-09-14 17:32 ` Mauro Carvalho Chehab
2007-09-14 17:46 ` Markus Rechberger
2007-09-14 18:29 ` Mauro Carvalho Chehab
2007-09-14 19:20 ` Michael Krufky
2007-09-14 21:07 ` Aidan Thornton
2007-09-14 21:16 ` Mauro Carvalho Chehab
2007-09-14 21:53 ` Manu Abraham
2007-09-14 20:43 ` Johannes Stezenbach
2007-09-15 1:29 ` Markus Rechberger
2007-09-15 1:49 ` Mauro Carvalho Chehab
2007-09-15 13:16 ` Johannes Stezenbach
2007-09-15 13:38 ` Markus Rechberger
2007-09-15 14:04 ` Mauro Carvalho Chehab
2007-09-15 14:33 ` Markus Rechberger
2007-09-15 14:45 ` Mauro Carvalho Chehab
2007-09-15 16:58 ` Bernard Jungen
2007-09-16 11:30 ` Hans Verkuil
2007-09-17 8:46 ` Markus Rechberger
2007-09-15 1:49 ` Markus Rechberger
2007-09-15 3:09 ` Mauro Carvalho Chehab
2007-09-15 12:59 ` Markus Rechberger
2007-09-15 8:52 ` Manu Abraham
2007-09-15 13:34 ` Johannes Stezenbach
2007-09-15 14:56 ` Steven Toth
2007-09-14 13:52 ` Alan Cox
2007-09-14 16:18 ` Markus Rechberger
2007-09-18 8:19 ` Jelle Foks
2007-09-18 8:55 ` Markus Rechberger
2007-09-18 22:56 ` Mauro Carvalho Chehab [this message]
2007-09-18 23:00 ` Alan Cox
2007-09-14 0:49 ` hermann pitton
2007-09-14 12:10 ` Alan Cox
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