From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx1.redhat.com (ext-mx08.extmail.prod.ext.phx2.redhat.com [10.5.110.12]) by int-mx03.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o2MC6I6G029144 for ; Mon, 22 Mar 2010 08:06:19 -0400 Received: from mail.pillar.it (85-18-55-49.ip.fastwebnet.it [85.18.55.49]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o2MC65Du014639 for ; Mon, 22 Mar 2010 08:06:06 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.pillar.it (Postfix) with ESMTP id 5394D107B83 for ; Mon, 22 Mar 2010 13:06:57 +0100 (CET) Received: from mail.pillar.it ([127.0.0.1]) by localhost (mail.pillar.it [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id QX-w4dO35EiC for ; Mon, 22 Mar 2010 13:06:57 +0100 (CET) Received: from [192.168.1.134] (89-96-169-53.ip13.fastwebnet.it [89.96.169.53]) by mail.pillar.it (Postfix) with ESMTPSA id 003C6107B82 for ; Mon, 22 Mar 2010 13:06:56 +0100 (CET) Message-ID: <4BA75D27.10807@pillar.it> Date: Mon, 22 Mar 2010 13:05:59 +0100 From: Sanfelici Claudio MIME-Version: 1.0 To: video4linux-list@redhat.com Subject: Set Frequency Problem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: video4linux-list-bounces@redhat.com Errors-To: video4linux-list-bounces@redhat.com List-ID: Hello all, it's first time I write to this mailing list, so I'm sorry if this problem has been already discussed. I'm writing an application in java tha use v4l2 through JNI layer (but I have the same problem in a C test program) When I call the VIDIOC_S_FREQUENCY the driver change the frequency, but the video signal is 0 (according to the VIDIOC_G_TUNER) and the image is black. I've to call some times the VIDIOC_S_FREQUENCY to get the signal on The driver I'm using is the SAA7130. Any ideas? Just another question: at this time I'm working with userpointer and read method to grab the images, but probably I will must use the video overlay. I've tried to start the overlay following the v4l documentation, but it doesn't work. I suspect that I must use the Xorg library to get some information (such as the frame buffer address). Could someone show me the way? Thanks in advance -- Pillar Engineering di Sanfelici Claudio Via Monza, 53 20063 Cernusco sul Naviglio - MI P.Iva 05403820961 C.F. SNFCDP81D28C523E Tel. 02.99.76.55.69 Fax. 02.99.76.55.70 Cell. +39 333.14.27.805 E-Mail info@pillar.it Sito: www.pillar.it -- video4linux-list mailing list Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe https://www.redhat.com/mailman/listinfo/video4linux-list