music July 2010

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Fwd: [LAU] Denemo 0.8.18 Release - Free and Open Music Notation Editor
by Niels Mayer 09 Jul '10

09 Jul '10

FYI: Some notes on building denemo ( http://denemo.org/index.php/Get_Denemo ) on Fedora: ---------- Forwarded message ---------- From: Niels Mayer <nielsmayer(a)gmail.com> Date: Thu, Jul 8, 2010 at 9:41 AM Subject: Re: [LAU] Denemo 0.8.18 Release - Free and Open Music Notation Editor To: Nils Hammerfest <nils(a)hammerfeste.com> Cc: linux-audio-dev(a)lists.linuxaudio.org On Thu, Jul 8, 2010 at 6:50 AM, Nils Hammerfest <nils(a)hammerfeste.com> wrote: > Get Denemo 0.8.18 http://denemo.org/index.php/Get_Denemo I was especially excited to try this out due to it's excellent use of guile as an extension language and it's support for chording, MIDI, and Jack... very interesting and cool project. What are the advantages of Denemo over http://frescobaldi.org/ ? There were a few wrinkles to build this on fedora and I wasn't able to get it to compile completely. But I was able to run and test it and get a feel for what it does. Very nice! Here's the issues I had compiling on Fedora: (1) After successfully doing "./configure --prefix=/usr/local --enable-jack" make dies with >/usr/bin/ld: cannot find -lltdl > collect2: ld returned 1 exit status > make[2]: *** [smfsh] Error 1 > make[2]: Leaving directory `/home/npm/denemo-git/libsmf' After installing libtool-ltdl-devel-2.2.6-18.fc12.1.x86_64 I was able to compile further. FYI, to get denemo compiling on fedora, I had to install the following additional -devel packages: sudo yum install guile-devel --> guile-devel-1.8.7-3.fc12.x86_64 sudo yum install aubio-devel --> aubio-devel-0.3.2-7.fc12.x86_64 sudo yum install portaudio-devel --> portaudio-devel-19-9.fc12.x86_64 sudo yum install gtksourceview2-devel --> gtksourceview2-devel-2.8.2-1.fc12.x86_64 sudo yum install fluidsynth-devel --> fluidsynth-devel-1.1.1-1.fc12.x86_64 sudo yum install libtool-ltdl-devel --> libtool-ltdl-devel-2.2.6-18.fc12.1.x86_64 (2) Compilation dies completely and confusingly in building documentation: >Making all in doc >./make: line 1: html:: command not found >warning: failed to load external entity "/usr/share/xml/docbook/stylesheet/nwalsh/xhtml/docbook.xsl" I have docbook-style-xsl-1.75.2-6.fc12.noarch installed which installs using paths like /usr/share/xml/docbook/stylesheet/nwalsh/xhtml/docbook.xsl At this point, I tried changing some of the files with the wrong paths and everything started breaking more so I gave up.... (3) Before giving up, I cd'd to "src" and typed make. It built denemo and it runs but complains about missing files (since I never installed it). (4) Deciding I don't need the documentation, I changed the toplevel makefile to exclude documentation and rebuilt successfully. For details, see: http://nielsmayer.com/npm/denemo.COMPILE.txt http://nielsmayer.com/npm/denemo.INSTALL.txt And this is the change needed to allow compilation to complete: > gnulem-234-~/denemo-git> diff Makefile.~1~ Makefile > 294c294 > < SUBDIRS = libsmf m4 doc actions pixmaps po src \ > --- > > SUBDIRS = libsmf m4 actions pixmaps po src \ (5) Now it runs -- i can put notes on the screen and hear fluidsynth's output in my headphones .... It produces the following output at launch: ................................. gnulem-231-~> denemo BinReloc failed to initialize: Domain: 1 (GBinReloc) Code: 4 Message: Binary relocation support is disabled. ---------------- (denemo:583): Gtk-WARNING **: LilyToggleShow: missing action LilyToggleShow (denemo:583): Gtk-WARNING **: LilyToggleShow: missing action LilyToggleShow (denemo:583): Gtk-WARNING **: LilyCreateCustom: missing action LilyCreateCustom (denemo:583): Gtk-WARNING **: LilyToggleShow: missing action LilyToggleShow (denemo:583): Gtk-WARNING **: LilyDelete: missing action LilyDelete GNU Denemo, a gtk+ frontend for GNU Lilypond (c) 1999-2005, 2009 Matthew Hiller, Adam Tee, and others This program is provided with absolutely NO WARRANTY; see the file COPYING for details. This software may be redistributed and modified under the terms of the GNU General Public License; again, see the file COPYING for details. Version 0_8_19fluidsynth: warning: Requested a period size of 64, got 1024 instead fluidsynth: warning: Requested 16 periods, got 4 instead init.denemo loadedParent: child exited, pid = 586, exit status = 0 .................. -- Niels http://nielsmayer.com

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Compiling and running gst123-0.1.2 on Fedora
by Niels Mayer 07 Jul '10

07 Jul '10

FYI: http://space.twc.de/~stefan/gst123.php is a nice command-line audio/video file-playing utility that should be part of Fedora or PlanetCCRMA. It uses the gstreamer interface so it provides better-integrated access to your audio devices or servers. Below are some simple tips on compiling on fedora. ---------- Forwarded message ---------- From: Niels Mayer <nielsmayer(a)gmail.com> Date: Tue, Jul 6, 2010 at 2:43 PM Subject: Re: [LAA] gst123-0.1.2 To: Stefan Westerfeld <stefan(a)space.twc.de> Cc: Linux Audio Developers <linux-audio-dev(a)lists.linuxaudio.org> 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: 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.

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music July 2010