Raspberry Pi Forums

cmarty

Have you found any solution for this problem ? I have the same symptoms. I have Rpi 3B+ with usb flash drive inserted in center USB port. Roughly one of five boots the Rpi3B+ doesn't start ethernet (no ethernet leds are on) and the flash drive is not present to the system. When I after that put usb ...

cmarty

Hello. I use OpenGL ES 2.0 and at the end of each frame I usually call eglSwapBuffers to apply gl commands and wait for vsync to swap v-buffers. But sometimes in my app I don't need to redraw each frame each vsync (when nothings has changed) . I would like to save gpu power and heat produce with gpu...

cmarty

Hello. I have opengl app (using openframeworks). I try to solve the situation when my program receive SIGSEGV (or for debug purpose I send him SIGSEGV signal) the program do not free dispmanx layer (resource) and last state of this dispmanx layer is still present on display. When I run program again...

cmarty

Hello. I was happy using example omx_image https://github.com/brynthomas/omx_image for loading jpeg images directly to texture with help of OMX_UseEGLImage. But after rpi firmware update Commits on Oct4 2016 https://github.com/Hexxeh/rpi-firmware/commit/667cfabe63bc663383559ef88317e86f9bd41e45 it st...

cmarty

That is true. After slowdown frequency, restricted process to only one core, use the same amount of memory, the new raspi 2 is still more powerfull than old Raspi.(especially in video/image decoding). It is really with help of 512kb L2 cache and use of NEON instructions. I compared it when switching...

cmarty

I even tried to setup on Rpi 2 in /boot/config.txt arm_freq=600 sdram_freq=400 but Rpi2 is still faster than Rpi. I notice first difference in cache reading from SD card (same SDcards): On Rpi2 and Rpi is emmc clock same : vcgencmd measure_clock emmc frequency(47)=250000000 On Rpi2: hdparm -t /dev/m...

cmarty

It is my mistake. Sorry for misreading. When I put it into the cmdline.txt it works now.
It is better now. But processor speed is still quicker than Rpi B and this is still visible.
Is there a way how to underclock the 900Mhz cpu to 700Mhz.

cmarty

I have try isolcpus=1,2,3 in config.txt do the reboot and no change top says: top - 08:45:08 up 10 min, 1 user, load average: 0.71, 0.38, 0.19 Tasks: 83 total, 1 running, 82 sleeping, 0 stopped, 0 zombie %Cpu0 : 1.0 us, 4.5 sy, 0.0 ni, 81.7 id, 12.8 wa, 0.0 hi, 0.0 si, 0.0 st %Cpu1 : 1.0 us, 17.6 sy...

cmarty

Hello. Sounds strange. But is there a way how to slow down the Rpi 2 (cpu frequency, disable quad cores, get rid of 512mb of ram) to work at speed similar to Rpi B+. I have project playing several video files and switching between them and Rpi 2 is visibly faster in that than old Rpi B+. In some cas...

cmarty

Thanks for the link. But there are only the resistive touch panels. I'm asking the forum because I've tried before to find(ebay, farnell, ...) some capacitive touch panel on the web, but i wasn't succesful. What i found was on http://www.alibaba.com/product-detail/3-5-transparent-glass-touch-screen_...

cmarty

Hello. For my project I'm trying to find 3.5" capacitive touch panel (digitizer) but without display. Just only the touch layer. It would be great if I can communicate with this touch layer by I2C or SPI interface and read out the thumb position. Does anybody have some tips where this kind of e...

cmarty

Hello. I found out when VideoCore is too hot it slows down. In my main rendering thread when I don't need to do render I just use usleep and wait defined time instead of render the frame and call eglSwapBuffers. So I don't do rendering when I don't need it and Videocore cools down. I use main render...

cmarty

Hello. I use HDMI display without sound in HDMI. I would like to use resolution is 1280x800 @ 50Hz . This is not the standard resolution so I added new custom mode "hdmi_cvt=1280 800 50 5 0 0 0" to /boot/config.txt and "hdmi_group=2", "hdmi_mode=87". The custom mode is ...

cmarty

Hello. I'm trying to find out some information about limits of allowed image resolution and specifications of file formats allowed for use with broadcom hw decoder (JPEG, MPEG4, H264). About JPEG images it is the maximal image resolution and description of allowed JPEG internal format. About the vid...

cmarty

Thanks for that. I solve the callback issue with similar code. But disable the component state transition to OMX_StateLoaded is not a solution. I can call exit func instead an this will result with the same effect. I want in my code to fast open new video file without destroying all omx elements and...

cmarty

Hello. In examples hello_videocube and hello_teapot there is not correctly done the code which does finishing and cleaning up. The examples uses egl render component to render video to egl image. I've tried to fix it up but I'm not omx skilled to find the solution. The first strange thing above the ...

cmarty

Defiant wrote:hmm I still can not reproduce it.

Please make a bugreport.

The question is if it is problem with gstreamer (gst-plugins-bad, gts-omx) or raspi firmware. Whom to I need to report this ?

cmarty

Defiant wrote:strange..now it works with the latest version..what is going on here?

I've tried to go back with firmware to the same version as you did but output is still distorted.
No matter if I use old or new firmware.

cmarty

strange, don't have that. I've tried to recompile just only plugin gst-omx branch 1.0 from git with the same distorted output result. For more info this is the -v output. I would be glad if you can compare it with yours. marty@raspberrypi ~ $ gst-launch-1.0 -v filesrc location= /opt/tpictures/jpg/R...

cmarty

Just tested, yes works. Did you include the imagefreeze element? I tested with this jpeg: http://wiki.openelec.tv/images/b/be/Raspberry-Pi-logo.jpg Yes. I use the same command as you. Now I've tested it with the same jpeg as you on raspi with clean raspbian (install, update, upgrade, reboot). Now y...

cmarty

Just try the element in a pipeline: gst-launch-1.0 -v filesrc location=testimage.jpg ! decodebin ! imagefreeze ! autovideosink decodebin should automatically call the omx element. The option -v will print the element decodebin used. For help try the mailing list: http://lists.freedesktop.org/mailma...

cmarty

I want to ask about gst-omx if it is able to decode jpeg pictures (stills). I know that there is omxmjpegdec but I can not find out if it can do the image jpeg decoding. I want to build application for browsing the images and video files and it would be perfect if it all can be done with gstreamer h...

cmarty

m][sko wrote:
cmarty wrote:Does anybody know if there is a plan to add to gst-omx the element for decoding jpeg pictures with openmax library ?
something for mjpeg ?

Can I understand that omxmjpegdec can also decode jpeg pictures ? In that case I can not find out the proper gst-launch-1.0 pipeline to test it.

cmarty

Defiant wrote:egl.h didn't exist yet in the version I compiled.
I'm currently waiting for a 1.0.8 release for a recompile.

That is now clear to me. Thanks Defiant for the info.

cmarty

In case of missing files during compilation the Debian package content search usually comes in handy: http://www.debian.org/distrib/packages Try aptitude install libegl1-mesa-dev libgles2-mesa-dev as it is done here: https://github.com/matthiasbock/gstreamer/issues/6 That's true that those packages...

Search found 40 matches

Re: Headless Pi3 B+ USB Boot hangs in left USB ports

Wait for V-Sync instead of eglSwapBuffer

How to free unused dispmanx layer (in case of SIGSEGV)

omx_image stops working after latest rpi firmware update

Re: Slow down Rpi 2 to work at same speed as Rpi B+

Re: Slow down Rpi 2 to work at same speed as Rpi B+

Re: Slow down Rpi 2 to work at same speed as Rpi B+

Re: Slow down Rpi 2 to work at same speed as Rpi B+

Slow down Rpi 2 to work at same speed as Rpi B+

Re: 3.5" Capacitive touch panel for I2C or SPI

3.5" Capacitive touch panel for I2C or SPI

Wait for V-SYNC without swap buffers

Re: Setting up HDMI output

Limits of videocore IV hw decoding

Re: Correct cleanup after video playing in videocube example

Correct cleanup after video playing in videocube example

Re: Gstreamer 1.0 for raspbian

Re: Gstreamer 1.0 for raspbian

Re: Gstreamer 1.0 for raspbian

Re: Gstreamer 1.0 for raspbian

Re: Gstreamer 1.0 for raspbian

Re: Gstreamer 1.0 for raspbian

Re: gstreamer openmax

Re: Gstreamer 1.0 for raspbian

Re: Gstreamer 1.0 for raspbian