From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniele Salvatore Albano Date: Wed, 01 Jun 2011 20:37:42 +0000 Subject: Re: Mirror "module" for framebuffer Message-Id: <4DE6A316.1000101@daccii.it> List-Id: References: <4DE67493.6090708@daccii.it> In-Reply-To: <4DE67493.6090708@daccii.it> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: linux-fbdev@vger.kernel.org Il 01/06/2011 22:02, Bruno Pr=E9mont ha scritto: > Hi, > > [re-adding linux-fbdev, please make sure to reply-to-all] uops > Note that some framebuffer drivers might implement (lots) of private > ioctls to implement (accelerated) drawing primitives. > So unless you know the driver you are hooking onto all bets are open. . . . > No, only a few selected ones implement deferred input/output, usually > because the real framebuffer cannot be mapped into memory or the link > to it is just dead slow so changes are pushed down to device at regular > intervals. . . . > I'm wondering if you not better had to create a new framebuffer driver > (based on virtual framebuffer) with fbdefio to push the changes to a > backing framebuffer [the way fbcon draws console] (as well as whatever you > use to stream to the remote system). > This will make you lose any potential hardware acceleration but keep > things simple. > Though you would need ability to move software to your new framebuffer. Main problem is that i need to show what is being displayed on the=20 screen, so i can't use another framebuffer device but i must use the one=20 used by the os. mmm i think that isin't the right way to handle this situation because=20 this software should work with too much different (and untestable) hardware. I'll see if there is a way to check when android draw something on the=20 framebuffer Thanks a lot for your time! Best Regards, Daniele --=20 ____________________________________________________________ | Daniele Salvatore Albano | web site: IT Consultant | http://www.itechcon.it Website Design and Development | Software Engineer and Developer | e-mail: Linux Servers SetUp And Administration | info@itechcon.it Embedded Network Solutions | d.albano@itechcon.it Are you lazy? Take a look to LazyDroid (www.lazydroid.net): android for=20 lazy people! Ai sensi del D.Lgs. 196/2003 si precisa che le informazioni contenute in=20 questo messaggio sono riservate ed a uso esclusivo del destinatario.=20 Qualora il messaggio in parola Le fosse pervenuto per errore, La=20 invitiamo ad eliminarlo senza copiarlo e a non inoltrarlo a terzi,=20 dandocene gentilmente comunicazione. Grazie. Pursuant to Legislative Decree No. 196/2003, you are hereby informed=20 that this message contains confidential information intended only for=20 the use of the addressee. If you are not the addressee, and have=20 received this message by mistake, please delete it and immediately=20 notify us. You may not copy or disseminate this message to anyone. Thank=20 you.