On Mon, Jul 5, 2010 at 9:11 AM, Stefan Westerfeld <stefan(a)space.twc.de> wrote:
> gst123-0.1.2 has been released.
> Website: Â http://space.twc.de/~stefan/gst123.php
> Download: http://space.twc.de/~stefan/gst123/gst123-0.1.2.tar.bz2
Stefan -- very nice and useful program. Thanks for making this available!
FYI -- To compile on Fedora, I had to install the following to get
'configure' to stop complaining:
1) yum install 'gstreamer-devel' (obviously)
2) yum install gstreamer-plugins-base-devel (less obvious as config complains:
No package 'gstreamer-interfaces-0.10' found // No package
'gstreamer-video-0.10' found )
3) yum install ncurses-devel
The application compiles and works nicely after that.
However, I have some questions/issues/bugs:
(1) I do not have pulseaudio running, and all gstreamer apps have a
pause as they attempt to contact pulseaudio, and then emit a message:
"socket(): Address family not supported by protocol" ... in a GUI app,
this might make less of a difference, since you don't end up having
the app respond to ^C signals. However, gst123 does -- and during the
period when gstreamer is contacting the pulseaudio socket, the
application becomes temporarily unresponsive, even to signals like ^C.
By the time it starts responding again it's already loaded the next
file and gone unresponsive again due to timing out on the nonexistent
pulseaudio socket. This makes the program very hard to interrupt.
Question: is there a way to disable checking for pulseaudio for each
new file when specifying multiple media files. e.g.: "gst123 *.ogg" ?
For example: do it once at application startup, or even better, a way
to prevent it from happening all-together via environment variable,
configuration, etc. Best would be some kind of environmental check so
that the timeout on socket needn't occur.The timeout significantly
slows down operation of the program even when not issuing ^C's.
(2) For HD Video recorded off digital broadcasts, but not for regular
def broadcast video, there's a problem when issuing the '->' (forward
arrow) or '<-' (backward arrow) commands to skip forwards or back: As
you go forward, there's an increasingly longer delay before the audio
syncs up and starts playing. Hit '->' a few times and the audio never
seems to sync up, and sometimes the video stays paused on the same
frame, even though the time display in the terminal continues
updating.
Note that the files producing these errors have some oddball results
output from "ffmpeg -i" but that's how mythtv's mpg files look, for HD
broadcasts:
...............
[mpeg2video @ 0x1c2fcd0]mpeg_decode_postinit() failure
Last message repeated 7 times
[mpegts @ 0x1c2b5f0]MAX_READ_SIZE:5000000 reached
Input #0, mpegts, from '/home/npm/Videos/1551_20100407195900.mpg':
Duration: 02:06:59.36, start: 55515.108733, bitrate: 10490 kb/s
Program 1
Stream #0.0[0x7c0]: Video: mpeg2video, yuv420p, 1280x720 [PAR 1:1
DAR 16:9], 38810 kb/s, 62.39 fps, 59.94 tbr, 90k tbn, 119.88 tbc
Stream #0.1[0x7c1]: Audio: ac3, 48000 Hz, stereo, s16, 192 kb/s
Stream #0.2[0x7c2]: Audio: ac3, 48000 Hz, stereo, s16, 192 kb/s
At least one output file must be specified
................
(3) Note that if the above file is played out of a list 'gst123 *.mpg'
then at least it gets audio playback. The same file, started
standalone, shows video, but gives plays no audio:
.............
gnulem-346-~> gst123 /home/npm/Videos/1551_20100407195900.mpg
Playing file:///home/npm/Videos/1551_20100407195900.mpg
** (gst123:12323): CRITICAL **: gst_mpeg_descriptor_find: assertion
`desc != NULL' failed
** (gst123:12323): CRITICAL **: gst_mpeg_descriptor_find: assertion
`desc != NULL' failed
No accelerated IMDCT transform found
** (gst123:12323): CRITICAL **: gst_mpeg_descriptor_find: assertion
`desc != NULL' failed
** (gst123:12323): CRITICAL **: gst_mpeg_descriptor_find: assertion
`desc != NULL' failed
No accelerated IMDCT transform found
socket(): Address family not supported by protocol
Codec : Dolby Digital (AC-3) (audio) Bitrate : 192.0 kbit/s
............................
Niels
http://nielsmayer.com
PS: Feature request: decode caption information from videos, and
display in video. And/or output a timed-text, SMIL or other file
containing the caption information and time-of-presentation
information. This can be very useful in searching content of video
files.
Hi Fons and LAD's,
I'm a very happy user of the decent FIL-equalizer and so far, it serves all my
needs for mixing down mono channels in mixing situations. The problem is that
a Stereo EQ is also needed from time to time, for example with drums; I'm
thinking about overhead channels. I use to make on bus for the drums and an
additional bus for the OH channels (so left and right OH channels can use
common hipass, compressor and EQs, and deesser (and so on)), then every drum
item is feed into the drum bus and OH's is feed it's stereo bus and from there
into the drum bus; this is probably the most common way to do it.
So my humble (I hope) request is: Is it possible to make a stereo version of
FIL-equalizer and can someone implement it? That would make the mixing
situation very much better.
And while I'm at it: Is it possible to add a Hi Pass filter (12(/18)/24 db) on
them too? ;-)
I know that's it's other EQ's out there, but the FIL-equalizer seems to cover
up my needs while still being simple to use and not overloading the computer -
2 or 3 bands are normally everything one need.
Thank you.
Jostein
hi calf folks, hi everyone!
unless i'm getting confused, the calf plugin set used to contain a set
of hi- and lowpass filters that seem to have vanished with my last git
pull. which is a major pity, since a) the current git solves a number of
crashes and b) i've been using those hi- and lowpass plugins (perhaps
unwisely) in a number of rather complicated sessions that i need to be
able to revisit...
any chance of getting those back?
best,
jörn
Hello, lists.
Not long ago I tried KX Studio 10.04.1 (updated LiveDVD) and installed it from stratch.
I am very glad to see linuxsampler, included to this distro. Of course, there is more notable things, but it is most for me.
2) Missing dependies: jack-netsource-gui from zenity.
3) Also, disk content's size is less then 2 Gb, so some packages would be nice included to disk: MuseScore, Aeolus, Ingen.
4) Needs packaging Cinecutie; cinelerra doesn't support unicode (very critical for russian and like users), not speaking about GUI. I don't see any reason to use cinelerra instead cinecutie. Both cinecutie and cinelerra have own PPA, maintained by Akirad.
Now a question: what is difference between kernels: linux-preempt from general ubuntu 10.04 repo and lowlatency/realtime kernels from kxstudio? There are two things, that caused me to be interested with kernel from standard ubuntu repository:
1) problems with Nouveau drivers at realtime kernel (nouveau module not found, though I have installed headers) and
2) When I select lowlatency driver, it goes into mode, specified with video= parameter, only after some time, when splash already appeared with theme, not specified through default.plymouth alternative.
Drumstick is a C++ wrapper around the ALSA library sequencer interface using
Qt4 objects, idioms and style. ALSA sequencer provides software support for
MIDI technology on Linux. Complementary classes for SMF and WRK file
processing are also included. This library is used in KMetronome, KMidimon
and KMid2, and was formerly known as "aseqmm".
Changes:
* New visibility attribute for all public classes allowing client programs to
be compiled with hidden visibility if desired.
* Better error reporting for all the utilities.
* Subdirectory "tests" renamed as "utils".
* Utility "smfplayer" renamed as "guiplayer" and enhanced with a new interface
design and support for Cakewalk WRK files.
Copyright (C) 2009-2010, Pedro Lopez-Cabanillas
License: GPL v2 or later
Project web site
 http://sourceforge.net/projects/drumstick
Online documentation
 http://drumstick.sourceforge.net/docs/
Downloads
 http://sourceforge.net/projects/drumstick/files/0.4.0/
On Tue, 2010-07-06 at 10:57 +0100, Daniel James wrote:
[snip]
> I notice
> http://www.rme-audio.de/en_support_techinfo.php?page=content/support/en_sup…
> doesn't mention USB or MIDI at all.
>
> Cheers!
>
> Daniel
Hi all :) hi Daniel :)
I'll read this link tomorrow, I just did a short test, right after the
postman did give me the ordered equipment. Please take a look at all the
tests I did here.
The Terratec's MIDI might be ok, but ...
spinymouse11.2@suse11-2:~> cat .alias
alias cpu-o="su -c\"cpufreq-set -gondemand\""
alias cpu-p="su -c\"cpufreq-set -gperformance\""
spinymouse11.2@suse11-2:~> cpu-p
Password:
spinymouse11.2@suse11-2:~> uname -a
Linux suse11-2 2.6.31.6-rt19 #1 SMP PREEMPT RT Wed Nov 18 16:59:26 CET
2009 x86_64 x86_64 x86_64 GNU/Linux
spinymouse11.2@suse11-2:~> alsa-midi-latency-test -l
Port Client name Port name
14:0 Midi Through Midi Through Port-0
16:0 TerraTec EWX24/96 TerraTec EWX24/96 MIDI
20:0 USB Device 0x170b:0x11 USB Device 0x170b:0x11 MIDI 1
spinymouse11.2@suse11-2:~> alsa-midi-latency-test -i16:0 -o16:0
> SUCCESS
best latency was 0.98 ms
worst latency was 1.42 ms, which is great.
spinymouse11.2@suse11-2:~> alsa-midi-latency-test -Rrw20 -i16:0 -o16:0
> SUCCESS
best latency was 0.99 ms
worst latency was 1.11 ms, which is great.
Then I run glxgears and Firefox with windows always on top and moved the
Firefox window while running the tests.
spinymouse11.2@suse11-2:~> alsa-midi-latency-test -i16:0 -o16:0
> SUCCESS
best latency was 0.98 ms
worst latency was 4.15 ms, which is great.
spinymouse11.2@suse11-2:~> alsa-midi-latency-test -Rrw20 -i16:0 -o16:0
> SUCCESS
best latency was 0.99 ms
worst latency was 1.11 ms, which is great.
Then I tested if the hrtimer might change something, I dunno if the test
will use it automatically.
spinymouse11.2@suse11-2:~> su
Password:
suse11-2:/home/spinymouse11.2 # chgrp audio /dev/hpet
suse11-2:/home/spinymouse11.2 # sysctl -w dev.hpet.max-user-freq=64
dev.hpet.max-user-freq = 64
suse11-2:/home/spinymouse11.2 # modprobe snd-hrtimer
suse11-2:/home/spinymouse11.2 # cat /proc/sys/dev/hpet/max-user-freq
64
suse11-2:/home/spinymouse11.2 # exit
Firefox and glxgears still on top of the windows and I moved the Firefox
windows again during the test.
Note that I now used the -R switch for both tests.
pinymouse11.2@suse11-2:~> alsa-midi-latency-test -Ri16:0 -o16:0
> SUCCESS
best latency was 0.99 ms
worst latency was 1.08 ms, which is great.
spinymouse11.2@suse11-2:~> alsa-midi-latency-test -Rrw20 -i16:0 -o16:0
> SUCCESS
best latency was 0.99 ms
worst latency was 1.12 ms, which is great.
Just for comparison one test for the Swissonic USB MIDI device, without
running glxgears or Firefox or moving any window. HPET still enabled.
spinymouse11.2@suse11-2:~> alsa-midi-latency-test -Rrw20 -i20:0 -o20:0
> SUCCESS
best latency was 1.17 ms
worst latency was 2.23 ms, which is great.
Now a final comment to those tests.
When I used the USB MIDI device + HPET the audible result wasn't usable
for music, but I had the impression that half of the jitter would solve
this issue.
If the results of the test are correct and if nothing would change when
running JACK and doing hard disk recording too, then I guess the PCI
MIDI could be ok.
I don't have much time today, perhaps tonight or tomorrow I'll mount the
new HDD and restore my 64 Studio's. When it's done I'll record some
music and additionally I'll ask Achim, http://achimjaroschek.com/ , to
stress the computer by playing the Roland drums and some hardcore
Classic or hardcore Jazz on the keyboards.
It's not only that he plays with all those music giants like Jasper
van't Hof, Peter Brötzmann etc., but he once throw his Apple through the
window and he always advise me not to make music using the computer
anymore.
I've got a good feeling, that around 1ms (when the -R switch is set)
would be good enough to make music, but again, even if the test says
2.23 ms for the USB device should be great, the USB device is unusable
for serious musicians, it results in music that might be done by am
idiot without any sense for music.
I couldn't use the USB device + HPET even for the simple Pop-Rock I
sometimes make.
Cheers!
Ralf
I once did a MIDI extension for SpeechBasic to program a real time MIDI
sound sampler on BASIC for the C64, for example
$1810 LDA $DEO6
$1813 LSR
$1814 BCC $1810
$1816 LDA $DE07; read MIDI event byte, usually followed by RTS
This are 6 bytes of code, to get a MIDI data byte from the UART.
I did an experiment by the signature that makes Adrian going wild.
Some lines for a signature are spam and I do agree.
How many lines of code are used by ALSA MIDI to do the same? Lets say
not per USB, but PCI.
I wonder if MIDI on Linux could become better and if audio could need
less resources when for Linux audio and MIDI, the concept might vary to
the usual Linux concept.
Some very elaborate Mac and Win audio apps do not need much resources or
much bytes.
I hope at least one person would understand that I'm not nagging. I try
to understand Linux code, but it's very long and hard to understand, not
comparable with the 4 lines above or even not comparable to longer code
for professional Atari sequencers.
Is there really a reason, I might not understand, to make Linux audio
that complicated?
Please, I guess some will write that I'm the only one having issues with
ALSA MIDI and JACK, but c'mon ;) ...
Cheers!
Ralf
PS: Latest ALSA MIDI latency tests fortunately did show that USB most
times is useless, see also the 64 Studio lists archives, but PCI MIDI
most times seems to be very good. Perhaps, if you should agree, there
could be an advice on Linux audio web sides to prefer PCI MIDI.
On Mon, 2010-07-05 at 10:15 +0200, Ralf Mardorf wrote:
> -------- Forwarded Message --------
> From: Ralf Mardorf <ralf.mardorf(a)alice-dsl.net>
> To: Clemens Ladisch <clemens(a)ladisch.de>
> Cc: Linux Audio Developers <linux-audio-dev(a)lists.linuxaudio.org>
> Subject: MIDI jitter - Today for 4 of 4 tests my USB device did pass all
> tests with success
> Date: Mon, 05 Jul 2010 10:14:21 +0200
> I'm very sceptic regarding to the ALSA MIDI latency test, OTOH the PATA
> might have caused 7 ms and IIRC 19 ms too and visually interpretation
> might mistake because it's hard to find the start of waveforms in the
> noise.
I guess (don't know), that 7 ms and 19 ms are caused by a broken HDD,
but when I did the visually test the HDD wasn't broken, I did it a long
time ago.
So the visually test around 4 ms and ALSA MIDI latency test around 4 ms
from today might be correct results for my computer and at least when I
got 4 ms for the visually test, the audible result was unusable for
music, anyway, I still have got some hope.
To be continued ASAP.
On Sun, 2010-07-04 at 22:14 +0100, Dan Mills wrote:
> You could probably hack a multi serial port card to do multiple midi
> ports (Change the rock to give a suitable divider for 31250 baud
> (4MHz?), add current loop interfaces)...
If one is fine with programming on Linux ;).
Hi!
I am trying to fix a problem in beast, where an algorithm (subnormal
cancellation and the associated unit test) will work on "normal" computers, but
not on AMD64, because denormals are treated as zero on this platform with the
compiler options we are using (-ffast-math and others).
So ideally I need a snippet of code (maybe assembler) that will just return
whether the processor/platform will have subnormals, like on x86, or not,
like on AMD64, by querying the processor status registers.
Is there some code around for this?
Cu... Stefan
--
Stefan Westerfeld, Hamburg/Germany, http://space.twc.de/~stefan
