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Cannot Open Fb Device /dev/graphics/fb0

Peter / 17 Feb 2012 9:54am # for 32Bit : (Format is : BGRX) X = transparency , we can ignore it) rgb24 = (uint8_t *) malloc(w * h * 3); Kind regards. Not the answer you're looking for? Forgot your password? http://sauvblog.com/cannot-open/cannot-open-source-device-php.html

Radu / 14 Jul 2013 10:27am # Ok Hari, this is getting better, the previous code was… well.. Karan / 30 Jul 2012 2:07pm # Hi, I had also try to pull,cat and cp command to copy fb0 file but it gives the following error. fd=open("/dev/graphics/fb0"); is failing pls help me, I was strucked here… James / 13 Oct 2013 8:53am # Hi I try to build this project.But I can't find where to download souce Surely there should be an "add permission" that the user could accept to allow your application to snap whatever is on the screen at any time? Get More Information

Radu Motisan / 12 Aug 2011 9:47am # yes, you simply compile my code above with a JNI interface. cannot open fb device /dev/graphics/fb0 I don't have su and I can't cd or ls the graphics directory to change/verify permissions. thanks very much.

Glreadpixels is an awful pipeline stall. fd = open("/dev/graphics/fb0", O_RDWR); if(fd < 0) { perror("cannot open fb0"); return -1; } please help me… i am using rooted device only(xperia neo v (ICS)).. To use Google Groups Discussions, please enable JavaScript in your browser settings, and then refresh this page. . Update, April 03, 2012 By popular demand, I have modified the code to support RGB32 as well.

Thanks in advance. I've confirmed that hdmi works, but then I switch to another reboot where I try to use only the lcd. To build the file for Nexus S, first setup the build environment as follows. The image file just have black, blue, and red streaks.

Thanks. Regards, Hari Radu Motisan / 13 Jul 2013 2:21pm # hi Hari, os.write(… doesn't seem right. What is the temperature of the brakes after a typical landing? So I have added a RGB32->RGB24 converter, but it is only a alpha channel remover, since we are not talking about true RGB32.

Write on the Android Read-only file system Android Overlay Mouse Cursor Copyright © 2016 PocketMagic. http://forum.xda-developers.com/showthread.php?t=710805&page=25 QUERY HOME 2016 © Queryhome ... and how I can get the video frame as well? Radu Motisan / 14 Jun 2011 4:57pm # do you have root access?

android framebuffer share|improve this question asked Oct 5 '12 at 10:55 Naga 135 While installing is there a message in logcat that indicates you don't get the permission? –zapl http://sauvblog.com/cannot-open/cannot-open-root-device.html You signed out in another tab or window. Thanks in advance. I wanted to know if there is anything else which I may be missing in my jni code.

Thanks wcj / 8 Aug 2014 12:20pm # hello Radu I get the same picture every time when i use the code to shot the screen My phone is HTC one http://stackoverflow.com/questions/10689193/execute-file-from-defined-directory-with-runtime-getruntime-exec/10690899#10690899 I will test it tonight. Bimap is very large in size. Source Abhinav / 16 Jun 2012 1:21am # Hi, I am trying to capture the screenshot of the device but I am unable to read the framebuffer file.

Initializing graphics H/W...D/libEGL ( 2420): loaded /system/lib/egl/libEGL_VIVANTE.soD/libEGL ( 2420): loaded /system/lib/egl/libGLESv1_CM_VIVANTE.soD/libEGL ( 2420): loaded /system/lib/egl/libGLESv2_VIVANTE.soW/imx6.gralloc( 2420): 32bpp setting of Framebuffer catched!W/imx6.gralloc( 2420): using (fd=15)W/imx6.gralloc( 2420): id = DISP3 BGW/imx6.gralloc( 2420): xres The goal is a to stream the output to disk Radu Motisan / 15 Jun 2012 10:14am # Yes, this should be the fastest approach. Who are the Bollywood stars who acted in the Chinese film "XuanZang"?

Radu Motisan / 21 May 2012 7:41pm # First connect with adb (adb shell) and try chmod there.

Prashant / 29 Jun 2013 10:43am # How to resolve this problem : [email protected]:/data # ./capturescr ./capturescr failed to mmap framebuffer: Invalid argument Segmentation fault -rwxrwxrwx root root 7603 2013-06-25 16:32 Below is my mk and java file code. CHANGELOG: v1.1RC0 - ICS support - Changed to official libvncserver v0.9.9. - Decoupled native screen grabber from jni sources, you wont need to have AOSP anymore to compile the daemon, just Android Unique Device ID Android Dynamic (no xml) Custom Adapter Listview Android NDK for Windows setup guide Blog options Log in Entries RSS Comments RSS WordPress.org Online Goodies Android Native Screen

I tried "os.write(("/system/bin/screencap -p " + "/sdcard/img.png").getBytes("ASCII"));" => This doesnt seem to work. answered Sep 30, 2013 by Mandeep Sehgal Your comment on this answer: Email me at this address if a comment is added after mine:Email me if a comment is added after Why there are no approximation algorithms for SAT and other decision problems? have a peek here Guess me who am I, I am the first on earth, the second in heaven...