Now/log
Just putting random stuff I’m working on and/or thinking about.
I’ll try to update this daily. RSS should reflect this.
0921
A bit of work on making uxn drawing
even faster: it now keeps track of a region on the screen that will
need to be redrawn. For simplicity, that region is always a rectangle
with the width being the width of the screen. On piano.rom that
made the CPU load drop to 4% when moving the mouse pointer. Before it
would go up to 15%.
After making that change I noticed uxn on 9front via drawterm is still
as slow as it was (the mouse pointer is lagging). Apparently I made
npe redraw the whole texture disregarding
what portions were actually updated. This will need to be fixed.
0920
Not much interesting.
0919
Went bouldering for the first time. Lots of fun!
Small change to uxn to make
CPU load low when idling in terms of drawing. Actual redrawing happens only
when at least one pixel was changed. On my x220 thinkpad the load
on piano.rom dropped from 25% to 4% in idle.
0918
uxn is working well on 9front again.
npe updates required (with mk nuke && mk install to update
the headers as well.
Cocktails night!
0826-0917
Wow. I got a new job and was veeery busy. It’s fun though!
I was reading some interesting papers during this time. For example, time warp related ones have been the most interesting. Someday in the future I want to try building a prototype of a PL/kernel that utilizes those ideas from the start.
Flashed my old X220 with coreboot and it powered on. Installed more RAM, cleaned and changed thermal paste. It’s a great laptop.
0825
More work on neindaw. Better
“autovoicing” logic, even less pops and cracks. mixfs makes
the timings go wrong, it seems. Sounds much better without it.
0824
Fixing neindaw. Mixing logic in piper
(and DSP filesystems) has been fixed so it makes more sense now. The
number of automatic voices has been limited to 16, they are also
recycled based on level when the limit hits (the most quiet one goes
away). In addition to [autovoice] metadata for Gate buttons that
would enabled automatic voice creation, [crossvoice] has been added.
That one makes the DSP create automatic voices and start playing them
when the previous voice crossed zero point amplitude, in which case
it’s also silenced. That allows kick drums to have way less artifacts
when they are repeated fast.
There is still a lot to learn in regards to mixing. Hard clipping is still present, and various sounds played together do not sound that well because the mixer does not account for anything, it just adds all samples together and clips.
0822-0823
No computers.
0821
Added loopback reading to mixfs, a few changes to
aacenc and
rtmp which allows to stream
mixed audio properly.
0817-0820
Computers? Not really.
0816
Played a bit with the “theming through libdraw” idea. Managed to get
sam themed dynamically (changing colors while it’s running) with
picker without a single change to
sam itself. Several issues still to figure out, best ways to make
this usable to find, but at least it seems possible so far.
0815
After usize became 64 bits on 64-bit platforms, alignment of
internal libvpx structures went sideways. I updated the port to use
ulong instead. A fixed release of
treason has been uploaded.
0814
Went hiking, made a fire, cooked potato and peppers. It was really nice.
0813
rtmp can stream to multiple destinations now. Both Twitch and PeerTube work.
Started to work on audio loopback for mixfs.
0808-0812
Mostly nothing? Some rtmp work.
0808
hj264 will no longer require multiple-of-16 window/screen size. That means no more green line at the bottom when capturing 1920x1080, for example.
rtmp: Audio reading is running in a
separate proc now. By using kvik’s mq I achieved audio loopback reading
and was able to stream Quake gameplay with audio to Twitch.
I should try writing SIMD on paper since I can never get enough computer access and distractions are constant. Once I’m on the new job, I will start going to coffee shops to work at. Working at home with other people present is impossible at this point.
0807
Watched “12 Years A Slave” for the first time.
0806
AAC audio support has been added to rtmp.
0805
Not much of anything.
0804
rtmp can now stream directly to Twitch. Success.
0803
I got to sent first portion of video frames over RTMP from 9front natively, without breaking the server. Video player on the other side doesn’t like those though, it produces some really nice glitch art. Need to figure out what is wrong. But it’s getting really close!
0802
hj264 will have much lower CPU usage on text editing streams by comparing the frame to the previous one and ignoring it entirely if the contents are the same.
More work on rtmp. Getting closer to sending video data.
0801
Nothing.
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Last update: September 22, 2021 06:30PM