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by paulslocum
Sat Mar 17, 2018 8:11 am
Forum: General discussion
Topic: No anti-static bag for 3B+?
Replies: 47
Views: 7798

Re: No anti-static bag for 3B+?

Regular Pi 3s that I've bought recently came without the bag.
by paulslocum
Wed Mar 14, 2018 7:49 pm
Forum: Graphics programming
Topic: Pi 3B+ Improvements?
Replies: 16
Views: 3452

Re: Pi 3B+ Improvements?

When do you expect US retailers to have stock? I'm really grateful to have a company like Raspberry Pi Foundation that isn't churning out new products as fast as they possibly can. The Raspberry Pi is great because they've taken the time to perfect it. If you start digging through the bug logs on Om...
by paulslocum
Tue Mar 13, 2018 8:49 pm
Forum: Advanced users
Topic: Console hidden after running SDL program
Replies: 1
Views: 316

Console hidden after running SDL program

I have a program that uses SDL, and after running it I can type and execute commands at the console but I can't see them. How do I get the console framebuffer working again after running SDL?
by paulslocum
Tue Mar 13, 2018 11:33 am
Forum: Graphics programming
Topic: External Graphics Card? (League of Legends)
Replies: 24
Views: 79353

Re: External Graphics Card? (League of Legends)

This thread is from years ago, and it was established already that this is not possible.
by paulslocum
Mon Mar 12, 2018 2:30 pm
Forum: Graphics programming
Topic: Possible to adjust phase of frame timing on video output?
Replies: 9
Views: 2462

Re: Possible to adjust phase of frame timing on video output?

What do you expect the jitter amount might be? Is there any possibility of exposing the pixel clock through vcgencmd? edit: Also, I think that even if the accuracy isn't great, that you can take multiple time samples and average them to get a better idea of when VSync is really occurring relative to...
by paulslocum
Mon Mar 12, 2018 1:45 pm
Forum: Graphics programming
Topic: Possible to adjust phase of frame timing on video output?
Replies: 9
Views: 2462

Re: Possible to adjust phase of frame timing on video output?

I see that it is possible to either get a callback or poll for VSync, so it should be possible to effectively determine the HDMI pixel clock offset that way.
by paulslocum
Sun Mar 11, 2018 10:32 pm
Forum: Graphics programming
Topic: Possible to adjust phase of frame timing on video output?
Replies: 9
Views: 2462

Re: Possible to adjust phase of frame timing on video output?

It accepts the commands to adjust the HDMI clock frequency, but I can't figure out any way to read the pixel clock value. I see where you can read the HDMI pixel clock frequency , but how do I read the actual pixel clock position so that I can know which way to skew the HDMI clock frequency in order...
by paulslocum
Sun Mar 11, 2018 1:04 am
Forum: Graphics programming
Topic: Possible to adjust phase of frame timing on video output?
Replies: 9
Views: 2462

Re: Possible to adjust phase of frame timing on video output?

Thanks, that's great to hear that it is possible. I haven't had time to experiment with it yet, but I'll report back when I do.
by paulslocum
Mon Mar 05, 2018 11:11 am
Forum: Graphics programming
Topic: Possible to adjust phase of frame timing on video output?
Replies: 9
Views: 2462

Re: Possible to adjust phase of frame timing on video output?

I used a 120fps camera, and I can see that the video frame timing phase is not aligned even though (I think) I'm aligning Omxplayer's frame output to the millisecond. From looking at the LCD screens' refresh in slow motion, my estimate of the timing variance is +/-4 msec, although maybe I'm misreadi...
by paulslocum
Sat Mar 03, 2018 5:09 pm
Forum: Graphics programming
Topic: Possible to adjust phase of frame timing on video output?
Replies: 9
Views: 2462

Re: Possible to adjust phase of frame timing on video output?

Currently, my guess is that I can shift the HDMI output frame timing with Omxplayer timing adjustments as long as I don't have the "--nohdmiclocksync" flag set. When everything's working right and I'm using two identical monitors, the video synchronization does look like it's precisely on the frame....
by paulslocum
Sat Mar 03, 2018 1:06 am
Forum: Graphics programming
Topic: Possible to adjust phase of frame timing on video output?
Replies: 9
Views: 2462

Possible to adjust phase of frame timing on video output?

I have two Raspberry Pis with their clocks synchronized to the millisecond, and I'm playing back synchronized video in Omxplayer. If I subtly shift the playback timing in Omxplayer, does that actually shift the 60Hz frame timing phase, or is the real 60Hz frame timing on some separate clock to which...
by paulslocum
Wed Feb 28, 2018 8:43 pm
Forum: General discussion
Topic: MPEG2 Patent expires this month
Replies: 19
Views: 9770

Re: MPEG2 Patent expires this month

If it's not going to be free, then I really wish the Raspberry Pi foundation would improve their license purchasing system. For the project I'm currently working on, we would have purchased hundreds of licenses. But it's just too cumbersome to create a spreadsheet of every Raspberry Pi we're plannin...
by paulslocum
Wed Feb 28, 2018 8:38 pm
Forum: Graphics programming
Topic: MPEG2 patents expiring
Replies: 34
Views: 16240

Re: MPEG2 patents expiring

Unfortunately in another thread, somebody from the Raspberry Pi foundation said that they will not make any change until the patent expires in every country (2025)
by paulslocum
Sun Feb 25, 2018 1:44 pm
Forum: C/C++
Topic: Memory Leak Tool?
Replies: 3
Views: 1369

Re: Memory Leak Tool?

mtrace() looks like a great option, and your example worked as advertised. Thanks for detailed reply.
by paulslocum
Sat Feb 24, 2018 2:01 pm
Forum: C/C++
Topic: Memory Leak Tool?
Replies: 3
Views: 1369

Memory Leak Tool?

What are you using for detecting memory leaks? I'm looking for something that tracks allocations and reports active allocations grouped by source. Valgrind doesn't work for me, it triggers an "illegal opcode" when I try to run it with my software. DMalloc seems like a good candidate. I've been using...
by paulslocum
Wed Feb 14, 2018 12:06 pm
Forum: Graphics programming
Topic: MPEG2 patents expiring
Replies: 34
Views: 16240

Re: MPEG2 patents expiring

by paulslocum
Thu Jan 11, 2018 3:25 am
Forum: Graphics programming
Topic: GUI - which graphics library/system to use
Replies: 8
Views: 9148

Re: GUI - which graphics library/system to use

I use SDL for everything, but would also consider OpenVG if portability wasn't required. Although in many cases, even you only know C++, it's still probably going to be quicker to hammer it out in Pygame. SDL is a lot more work -- you'll have to build SDL from source to run without X, and probably d...
by paulslocum
Thu Jan 04, 2018 1:03 pm
Forum: Graphics programming
Topic: MPEG2 patents expiring
Replies: 34
Views: 16240

Re: MPEG2 patents expiring

Any predictions? I'm working on a project where we'll need up to 1000 RPi's with Omxplayer MPEG2 capability, and it's a pretty complicated undertaking to unlock them since there's no way to fully automate the task due to the way the license purchasing works. It would be a huge relief and save a lot ...
by paulslocum
Wed Jan 03, 2018 3:28 pm
Forum: Graphics programming
Topic: MPEG2 patents expiring
Replies: 34
Views: 16240

MPEG2 patents expiring

I'm wondering how will MPEG2 decoding be handled now that the MPEG2 patents are finally expiring? Will the codec be unlocked automatically with new versions of Raspbian?

https://en.wikipedia.org/wiki/List_of_U ... -2_patents
by paulslocum
Thu Nov 30, 2017 10:34 pm
Forum: General programming discussion
Topic: Cross-Development: C64 Assembler with the RPi?
Replies: 20
Views: 3407

Re: Cross-Development: C64 Assembler with the RPi?

I used DASM for all my 65xx projects, should be easy to build on RPi:

http://dasm-dillon.sourceforge.net/
by paulslocum
Tue Nov 21, 2017 2:58 pm
Forum: Graphics programming
Topic: Codec unlocking email doesn't contain original serial numbers
Replies: 4
Views: 1431

Re: Codec unlocking email doesn't contain original serial numbers

Thanks, I emailed and they have a bulk codec ordering process (minimum 20). You email them a list of all the serials, pay and invoice, and they send you an excel spreadsheet back with the serials and unlock codes.
by paulslocum
Thu Nov 09, 2017 2:20 pm
Forum: Graphics programming
Topic: Codec unlocking email doesn't contain original serial numbers
Replies: 4
Views: 1431

Re: Codec unlocking email doesn't contain original serial numbers

I'm ultimately trying to unlock hundreds of Raspberry Pis, and plugging in every serial number to every one and repeatedly rebooting until they're unlocked doesn't seem like a great solution, although I suppose it is a possibility. If there were ever a problem, it would probably be difficult to trac...
by paulslocum
Thu Nov 09, 2017 1:45 pm
Forum: Graphics programming
Topic: Codec unlocking email doesn't contain original serial numbers
Replies: 4
Views: 1431

Codec unlocking email doesn't contain original serial numbers

Since it is not possible to order boards with codecs unlocked, I was looking into a way to automate the codec purchase and unlocking process using scripts. But I noticed that the emails with the unlock codes do not contain the original serial numbers corresponding to the unlock codes, so there's not...
by paulslocum
Mon Nov 06, 2017 5:29 am
Forum: Advanced users
Topic: Who to contact about ordering boards with codecs unlocked?
Replies: 15
Views: 1942

Re: Who to contact about ordering boards with codecs unlocked?

What is the alternative to omxplayer that is capable of playing MPEG2 using software decoding?
by paulslocum
Sun Nov 05, 2017 3:50 am
Forum: Advanced users
Topic: Who to contact about ordering boards with codecs unlocked?
Replies: 15
Views: 1942

Re: Who to contact about ordering boards with codecs unlocked?

Thank you for all the responses. I swear I read on here somewhere that you could order boards with the codecs unlocked if you buy 100 or more. I'm making product with the RPi, and unlocking each one is a hassle since you have to wait for the email response, which has sometimes taken a day or two. MP...

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