From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx3.redhat.com (mx3.redhat.com [172.16.48.32]) by int-mx1.corp.redhat.com (8.13.1/8.13.1) with ESMTP id n4P1WCOU013178 for ; Sun, 24 May 2009 21:32:12 -0400 Received: from mail-px0-f126.google.com (mail-px0-f126.google.com [209.85.216.126]) by mx3.redhat.com (8.13.8/8.13.8) with ESMTP id n4P1VuMm006988 for ; Sun, 24 May 2009 21:31:56 -0400 Received: by pxi32 with SMTP id 32so2416365pxi.23 for ; Sun, 24 May 2009 18:31:55 -0700 (PDT) From: xie To: video4linux-list@redhat.com In-Reply-To: <20090523160013.909D88E03A1@hormel.redhat.com> References: <20090523160013.909D88E03A1@hormel.redhat.com> Content-Type: text/plain; charset="UTF-8" Date: Mon, 25 May 2009 09:31:41 +0800 Message-Id: <1243215101.6402.12.camel@xie> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: about taking picture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: video4linux-list-bounces@redhat.com Errors-To: video4linux-list-bounces@redhat.com List-ID: Dear all ~ I have to implement the hal in Android with v4l2. Now i use one thread to preview , i just use V4L2 capture interface to implement the preview. Now i have one confusion : I think i can implement the taking picture just copy the preview frame , and am i right ? I want to use another thread to take picture , when I am taking picture ,whether I have to stop the previewing ? Thanks a lot ~!~ 在 2009-05-23六的 12:00 -0400，video4linux-list-request@redhat.com写道： > Send video4linux-list mailing list submissions to > video4linux-list@redhat.com > > To subscribe or unsubscribe via the World Wide Web, visit > https://www.redhat.com/mailman/listinfo/video4linux-list > or, via email, send a message with subject or body 'help' to > video4linux-list-request@redhat.com > > You can reach the person managing the list at > video4linux-list-owner@redhat.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of video4linux-list digest..." > Today's Topics: > > 1. Re: Query (Adrian Pardini) > 2. Re: How to acces TVP5150 .command function from userspace > (Dongsoo, Nathaniel Kim) > 3. Re: How to acces TVP5150 .command function from userspace > (Markus Rechberger) > 4. Re: [not working] Conceptronic USB 2.0 Digital TV Receiver - > CTVDIGRCU - Device Information (Jelle de Jong) > 电子邮件 附件 > > -------- 转发的信件 -------- > > 发件人: Adrian Pardini > > 收件人: Vandana Vuthoo > > 抄送: video4linux-list@redhat.com > > 主题: Re: Query > > 日期: Fri, 22 May 2009 16:49:28 -0300 > > > > Hi Vandana, > > > > this list is deprecated, please resend your message to > > linux-media@vger.kernel.org. > > For more information visit: http://vger.kernel.org/vger-lists.html#linux-media. > > > > cheers. > > > > On 22/05/2009, Vandana Vuthoo wrote: > > > Hi, > > > I am a beginner to V4l2 domain, actually I want to know whether we can give > > > MPEG4 stream as an input to V4L2 driver and show it on the LCD Screen, the > > > platform being used is the Beagleboard. > > > Regards, > > > Vandana > > > > > > > 电子邮件 附件 > > -------- 转发的信件 -------- > > 发件人: Dongsoo, Nathaniel Kim > > 收件人: Devin Heitmueller > > 抄送: video4linux-list@redhat.com > > 主题: Re: How to acces TVP5150 .command function from userspace > > 日期: Sat, 23 May 2009 15:30:46 +0900 > > > > Actually those controls should be supported by VIDIOC_S_CTRL but not > > sure on 2.6.19. > > I took a snapshot of 2.6.19 kernel from git but couldn't find any of > > v4l2_ioctl_ops in tvp5150. Possibly not have been using v4l2_ioctl_ops > > in that time I guess (not sure) > > Anyway, controls that william is trying to use should be controled via > > VIDIOC_S_CTRL with CID and as far as I checked in 2.6.19, it already > > had those CIDs. So, it could be worth to give a shot with > > VIDIOC_S_CTRL. > > Cheers, > > > > Nate > > > > 2009/5/22 Devin Heitmueller : > > > On Fri, May 22, 2009 at 3:50 AM, $B7JJ8NS(B wrote: > > >> Hi, > > >> > > >> I am working with a video capture chip TVP5150. I want to adjust the > > >> "Brightness" "Contrast" "Saturation" and "hue" in user space. > > >> In TVP5150 drivers ,the V4l2 commands are in function tvp5150_command.And > > >> this function is a member of struct i2c_device. > > >> > > >> The linux is 2.6.19.2. > > >> I write my code according kernel document Documentation/i2c/dev-interface > > >> But I can`t access tvp5150_command. > > >> How can i acces i2c_device .command function from user space? > > > > > > I thought those controls were already implemented in the tvp5150 > > > driver, although I could be mistaken (I would have to look at the > > > code). If not, it would probably be much easier to just add the > > > commands to the driver than to attempt to program the chip from > > > userland (the datasheet for the tvp5150 is freely available). > > > > > > Devin > > > > > > -- > > > Devin J. Heitmueller - Kernel Labs > > > http://www.kernellabs.com > > > > > > -- > > > video4linux-list mailing list > > > Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe > > > https://www.redhat.com/mailman/listinfo/video4linux-list > > > > > > > > > > 电子邮件 附件 > > -------- 转发的信件 -------- > > 发件人: Markus Rechberger > > 收件人: Devin Heitmueller > > 抄送: video4linux-list@redhat.com > > 主题: Re: How to acces TVP5150 .command function from userspace > > 日期: Sat, 23 May 2009 17:26:33 +0200 > > > > 2009/5/22 Devin Heitmueller : > > > On Fri, May 22, 2009 at 3:50 AM, $B7JJ8NS(B wrote: > > >> Hi, > > >> > > >> I am working with a video capture chip TVP5150. I want to adjust the > > >> "Brightness" "Contrast" "Saturation" and "hue" in user space. > > >> In TVP5150 drivers ,the V4l2 commands are in function tvp5150_command.And > > >> this function is a member of struct i2c_device. > > >> > > >> The linux is 2.6.19.2. > > >> I write my code according kernel document Documentation/i2c/dev-interface > > >> But I can`t access tvp5150_command. > > >> How can i acces i2c_device .command function from user space? > > > > > > I thought those controls were already implemented in the tvp5150 > > > driver, although I could be mistaken (I would have to look at the > > > code). If not, it would probably be much easier to just add the > > > commands to the driver than to attempt to program the chip from > > > userland (the datasheet for the tvp5150 is freely available). > > > > > > > those are definitely implemented, I remember there was a problem with > > a too dark videopicture years ago and it was a bug in the tvp5150... > > > > Also by looking at it: > > V4L2_CID_BRIGHTNESS > > V4L2_CID_CONTRAST > > V4L2_CID_SATURATION > > V4L2_CID_HUE > > > > are supported. > > > > Markus > > > > > 电子邮件 附件 > > -------- 转发的信件 -------- > > 发件人: Jelle de Jong > > 收件人: Antti Palosaari > > 抄送: video4linux-list@redhat.com > > 主题: Re: [not working] Conceptronic USB 2.0 Digital TV Receiver - > > CTVDIGRCU - Device Information > > 日期: Sat, 23 May 2009 17:36:02 +0200 > > > > Antti Palosaari wrote: > > > On 04/25/2009 10:52 AM, Jelle de Jong wrote: > > >> Would somebody be willing to get this device to work with the upstream > > >> v4l systems? I can sent the device to you. If not I can also return the > > >> device back to the store. Just sent me an email. > > > > > > I can try. At least some basic driver stub which just works is possible > > > to do usually even without specs if tuner chip have one that does have > > > Linux driver. Most likely it does have tuner that is supported because > > > almost every DVB-T silicon tuner have some kind of driver currently. > > > > > > regards > > > Antti > > > > Hi Antti, > > > > Sorry for the delay, the package has been lying here for a few weeks. I > > have sent the device today so I hope it will arrive soon. > > > > Best regards, > > > > Jelle > > > > > -- > video4linux-list mailing list > Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/video4linux-list -- video4linux-list mailing list Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe https://www.redhat.com/mailman/listinfo/video4linux-list