Raspberry Pi Forums

Skinkie

I searched through this topic and didn't find anything on a pretty pressing topic yet: how does the interrupt controller on the Pi 4 work? Does it distribute all interrupts over multiple cores, or is the behavior similar to all previous Pi's where only one single core handles all interrupts and by h...

Skinkie

viewtopic.php?f=67&t=201449

Close me

Skinkie

With the expiration of the MPEG-2 patents. Will the codecs that are currently required to be paid, become royalty free as well?

Skinkie

As a regular user of gnuradio and upgrading to Pi3, I wanted to figure out if there would be a significant improvement of compiling gnuradio myself over using packages provided by Arch Linux. This benchmark targets libvolk.so.1.3 provided by gnuradio 3.7.10.1. Below is the list improvements, up to 1...

Skinkie

Is it possible using openmax to get the actual screen contents rendered by openmax at that given moment from inside another application? Rationale: I want to use omx-tx but using something similar to "x11grab". I have the entire omx pipeline under my own control, but I would like to have the transco...

Skinkie

Still no clue what it was, but a totally clean git clone did the trick once again.

Skinkie

On the forum there is some mention of efence, but that isn't available on arch with packages so I didn't check that yet. But I am really puzzled on what is going wrong here, it makes absolutely no sence that stepping into the function changes the layout of the struct.

Skinkie

As shows from GDB, I know exactly between what functioncall to some other call the memory changes. To show it more visually: [root@pi01 skinkie]# gdb /opt/cherokee/sbin/cherokee-worker GNU gdb (GDB) 7.6 Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <htt...

Skinkie

It is indeed the February image. Hosted on 2 Pi's in a datacentre. One of the Pi's is working the other one isn't (both run exactly the same kernels etc.) Linux version 3.6.11-11-ARCH+ (nobody@panda5) (gcc version 4.7.2 (GCC) ) #1 PREEMPT Tue May 14 16:12:58 UTC 2013 I have upgraded the systems usin...

Skinkie

I'm running the latest arch version. What I am seeing is odd; valgrind doesn't work. ==31066== Memcheck, a memory error detector ==31066== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al. ==31066== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info ==31066== Command: /o...

Skinkie

typedef enum OMX_IMAGE_CODINGTYPE { OMX_IMAGE_CodingUnused, /**< Value when format is N/A */ OMX_IMAGE_CodingAutoDetect, /**< Auto detection of image format */ OMX_IMAGE_CodingJPEG, /**< JPEG/JFIF image format */ OMX_IMAGE_CodingJPEG2K, /**< JPEG 2000 image format */ OMX_IMAGE_CodingEXIF, /**< EXIF...

Skinkie

Getting the JPEG variant working, I wondered if I could just replace OMX_IMAGE_CodingJPEG in OMX_IMAGE_CodingAutoDetect and get a universal image display program. Call me naive but that didn't work; neither did replacing it by OMX_IMAGE_CodingPNG and opening a PNG file instead. The output is blank, ...

Skinkie

I have figured out that it is of critial importance to have the definitions of the Makefile.include in my project. With them the only EOS I get is in resizer on too small images. I hope this helps others later. gcc -DSTANDALONE -D__STDC_CONSTANT_MACROS -D__STDC_LIMIT_MACROS -DTARGET_POSIX -D_LINUX -...

Skinkie

So which code controls the buffer that should be increased from 80kb -> 250kb? I'm trying to display 1920x1080 images. hello_jpeg, doesn't complain, but when I try to implement something that shows the images I get the magic: Width: 1920 Height: 1080 Output Color Format: 0x7f000001 Buffer Size: 8355...

Skinkie

I'm currently using the Python code to access the VG stuff. Yes, it required some patching but I can do virtually everything with it now. I had an issue, trying to load a non- square image for this image_demo.py . Sadly this resulted in on screen garbage; it looks like the image data is not aligned....

Skinkie

Hi, pretty interested. Let me know what kind of app and language you want.

Skinkie

Currently I have seen that the Ext4 filesystem is not really suitable as robust filesystem that could cope with unexpected (hard) shutdowns and/or powerfailures. Ending up with a kernel panic with stuff like: "group descriptors corrupted". Thats pretty bad, because the device doesn't boot anymore. T...

Skinkie

Thank you very much for pursuing this. I wonder, should we also make some drop in replacement for clutter-gst, so the Pi can use video acceleration?

Search found 18 matches

Re: Raspberry Pi 4 Thread - general discussion

Re: MPEG-2 patent expiration

MPEG-2 patent expiration

GNURadio / Volk benchmark Pi3

Screencapture based transcoding

Re: memory corruption? / valgrind doesn't work

Re: memory corruption? / valgrind doesn't work

Re: memory corruption? / valgrind doesn't work

Re: memory corruption? / valgrind doesn't work

memory corruption? [solved] / valgrind doesn't work

Which OMX_IMAGE_CODINGTYPE are actually supported?

Re: OpenMAX: How to decode a JPEG (example source code)

Re: OpenMAX: How to decode a JPEG (example source code)

Re: OpenMAX: How to decode a JPEG (example source code)

Non-square images

Re: Software Engineer wanted for Rasp Pi Project

Filesystem for Pi that could be powerless at any second

Re: Clutter (OpenGL/OpenGL ES GUI Library)