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by Skinkie
Mon Jun 24, 2019 5:36 pm
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 945
Views: 128649

Re: Raspberry Pi 4 Thread - general discussion

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...
by Skinkie
Wed Feb 14, 2018 8:09 pm
Forum: General discussion
Topic: MPEG-2 patent expiration
Replies: 1
Views: 581

Re: MPEG-2 patent expiration

by Skinkie
Wed Feb 14, 2018 8:09 pm
Forum: General discussion
Topic: MPEG-2 patent expiration
Replies: 1
Views: 581

MPEG-2 patent expiration

With the expiration of the MPEG-2 patents. Will the codecs that are currently required to be paid, become royalty free as well?
by Skinkie
Sun Sep 04, 2016 1:33 pm
Forum: General discussion
Topic: GNURadio / Volk benchmark Pi3
Replies: 1
Views: 848

GNURadio / Volk benchmark Pi3

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...
by Skinkie
Mon Aug 19, 2013 7:47 pm
Forum: OpenMAX
Topic: Screencapture based transcoding
Replies: 1
Views: 1195

Screencapture based transcoding

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...
by Skinkie
Thu May 30, 2013 8:31 pm
Forum: Arch
Topic: memory corruption? [solved] / valgrind doesn't work
Replies: 10
Views: 3676

Re: memory corruption? / valgrind doesn't work

Still no clue what it was, but a totally clean git clone did the trick once again.
by Skinkie
Thu May 30, 2013 6:18 pm
Forum: Arch
Topic: memory corruption? [solved] / valgrind doesn't work
Replies: 10
Views: 3676

Re: memory corruption? / valgrind doesn't work

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.
by Skinkie
Thu May 30, 2013 6:11 pm
Forum: Arch
Topic: memory corruption? [solved] / valgrind doesn't work
Replies: 10
Views: 3676

Re: memory corruption? / valgrind doesn't work

As shows from GDB, I know exactly between what functioncall to some other call the memory changes. To show it more visually: [[email protected] 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...
by Skinkie
Thu May 30, 2013 5:36 pm
Forum: Arch
Topic: memory corruption? [solved] / valgrind doesn't work
Replies: 10
Views: 3676

Re: memory corruption? / valgrind doesn't work

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+ ([email protected]) (gcc version 4.7.2 (GCC) ) #1 PREEMPT Tue May 14 16:12:58 UTC 2013 I have upgraded the systems usin...
by Skinkie
Thu May 30, 2013 3:37 pm
Forum: Arch
Topic: memory corruption? [solved] / valgrind doesn't work
Replies: 10
Views: 3676

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

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...
by Skinkie
Tue May 28, 2013 10:37 am
Forum: OpenMAX
Topic: Which OMX_IMAGE_CODINGTYPE are actually supported?
Replies: 2
Views: 4467

Which OMX_IMAGE_CODINGTYPE are actually supported?

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...
by Skinkie
Mon May 27, 2013 11:18 pm
Forum: C/C++
Topic: OpenMAX: How to decode a JPEG (example source code)
Replies: 67
Views: 38692

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

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, ...
by Skinkie
Mon May 27, 2013 10:22 pm
Forum: C/C++
Topic: OpenMAX: How to decode a JPEG (example source code)
Replies: 67
Views: 38692

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

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 -...
by Skinkie
Mon May 27, 2013 4:44 pm
Forum: C/C++
Topic: OpenMAX: How to decode a JPEG (example source code)
Replies: 67
Views: 38692

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

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...
by Skinkie
Mon Feb 11, 2013 1:02 am
Forum: OpenVG
Topic: Non-square images
Replies: 0
Views: 1331

Non-square images

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....
by Skinkie
Thu Oct 11, 2012 4:15 pm
Forum: Advanced users
Topic: Software Engineer wanted for Rasp Pi Project
Replies: 3
Views: 1834

Re: Software Engineer wanted for Rasp Pi Project

Hi, pretty interested. Let me know what kind of app and language you want.
by Skinkie
Thu Oct 11, 2012 4:15 pm
Forum: Advanced users
Topic: Filesystem for Pi that could be powerless at any second
Replies: 11
Views: 5990

Filesystem for Pi that could be powerless at any second

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...
by Skinkie
Sat Sep 15, 2012 8:22 am
Forum: Graphics programming
Topic: Clutter (OpenGL/OpenGL ES GUI Library)
Replies: 10
Views: 6855

Re: Clutter (OpenGL/OpenGL ES GUI Library)

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?

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