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Open Source and information security mailing list archives
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Date: Tue, 18 Sep 2007 19:56:05 -0300 From: Mauro Carvalho Chehab <mchehab@...radead.org> To: Jelle Foks <jelle@...s.8m.com> Cc: Markus Rechberger <mrechberger@...il.com>, Alan Cox <alan@...hat.com>, "video4linux-list@...hat.com" <video4linux-list@...hat.com>, "linux-dvb@...uxtv.org" <linux-dvb@...uxtv.org>, "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [linux-dvb] [PATCH] Userspace tuner > 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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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