Amarok/Manual/Various/Moodbar/cs: Difference between revisions

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(Created page with "Provedení nového '''náladového pruhu''' má dvě části: balíček '''Moodbar''', který obsahuje program, jenž vezme hudební soubor a vytvoří soubor .mood, a podpůr...")
(Created page with "Náhradou za výše uvedené je nový skript, který vytvoří soubory pro náladový pruh pro skladby v seznamu skladeb '''Amaroku'''; jedná se o výjimku k výše popsaném...")
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Provedení nového '''náladového pruhu''' má dvě části: balíček '''Moodbar''', který obsahuje program, jenž vezme hudební soubor a vytvoří soubor .mood, a podpůrný kód ve zdrojových souborech pro '''Amarok''', který spouští spustitelný soubor a zobrazí náladový pruh.  Balíček '''Moodbar''' závisí na knihovnách pro ''GStreamer''.  Bez balíčku '''Moodbar''', '''Amarok''' náladové pruhy pro vaši hudbu vytvořit nedokáže.  
Provedení nového '''náladového pruhu''' má dvě části: balíček '''Moodbar''', který obsahuje program, jenž vezme hudební soubor a vytvoří soubor .mood, a podpůrný kód ve zdrojových souborech pro '''Amarok''', který spouští spustitelný soubor a zobrazí náladový pruh.  Balíček '''Moodbar''' závisí na knihovnách pro ''GStreamer''.  Bez balíčku '''Moodbar''', '''Amarok''' náladové pruhy pro vaši hudbu vytvořit nedokáže.  


As an alternative, there is a new script which will create moodbar files for tracks in an '''Amarok''' playlist; this is an exception to the above. The script needs nothing but '''Amarok''' to work, but it only creates the .mood files as they are played in the '''Playlist'''.
Náhradou za výše uvedené je nový skript, který vytvoří soubory pro náladový pruh pro skladby v seznamu skladeb '''Amaroku'''; jedná se o výjimku k výše popsanému. Skriptu ke jeho činnosti stačí '''Amarok''', ale vytváří pouze soubory .mood, zatímco jsou přehrávány v '''seznamu skladeb'''.


The '''Moodbar''' is due to the work of Gavin Wood and Simon O'Keefe, who designed the algorithms; their original paper is [http://cratoo.de/amarok/ismir-crc.pdf here].  
The '''Moodbar''' is due to the work of Gavin Wood and Simon O'Keefe, who designed the algorithms; their original paper is [http://cratoo.de/amarok/ismir-crc.pdf here].  

Revision as of 08:29, 6 September 2013

Náladový pruh

Náladový pruh ukazuje "náladu" skladby, což můžete potom využít k tomu, abyste si uvědomili, kdy v písni se něco zajímavého děje.

Aby Amarok zobrazoval náladové pruhy pro vaši hudbu, budete potřebovat program pro náladový pruh (níže se podívejte na stahovánís a balíčky).

Balíček pro náladový pruh vyžaduje GStreamer a různé přídavné moduly v závislosti na souborových typech, jež používáte (podívejte se na podporované souborové typy). K vytvoření souborů .mood nebudete potřebovat balíček phonon-backend-gstreamer.

Provedení nového náladového pruhu má dvě části: balíček Moodbar, který obsahuje program, jenž vezme hudební soubor a vytvoří soubor .mood, a podpůrný kód ve zdrojových souborech pro Amarok, který spouští spustitelný soubor a zobrazí náladový pruh. Balíček Moodbar závisí na knihovnách pro GStreamer. Bez balíčku Moodbar, Amarok náladové pruhy pro vaši hudbu vytvořit nedokáže.

Náhradou za výše uvedené je nový skript, který vytvoří soubory pro náladový pruh pro skladby v seznamu skladeb Amaroku; jedná se o výjimku k výše popsanému. Skriptu ke jeho činnosti stačí Amarok, ale vytváří pouze soubory .mood, zatímco jsou přehrávány v seznamu skladeb.

The Moodbar is due to the work of Gavin Wood and Simon O'Keefe, who designed the algorithms; their original paper is here.

Shrnutí požadavků

  • The Moodbar binary, in your PATH (it should be listed upon running
    which moodbar
    from a console) — Remember to configure the Moodbar package with
    ./configure --prefix=`pkg-config --variable=prefix gstreamer-0.10`
  • The GStreamer 0.10 library and plugins for the formats you want Moodbar to be able to analyse.
  • The Fastest Fourier Transform In The West (fftw.org) FFTW library version 3.0 or above (at least single-precision floating point version - libfftw3f) — If your platform does not provide this for you or you need to compile your own version, remember to configure the FFTW package with
    ./configure --enable-single
  • A version of Amarok with a Use moods option in the General section of the configuration screen. This means 1.4.4 or higher in the 1.4 series or 2.2.2 or higher in the 2.x series.
Information
Systems with package managers should automatically install the GStreamer plugins and FFTW along with the Moodbar package; this information is provided mostly for people who want or need to compile from source or manually install packages.


Používání

Currently .mood files must be generated manually. Amarok cannot do it for you. To do this for your entire collection, use the Moodbar File Generation Script described below.

To enable the display of moodbars in Amarok, activate it in the configuration: Settings -> Configure Amarok -> General -> Show Moodbar in Progress Slider. Moodbars should now appear in the track sliders in the player window and Playlist; there will also be a mood field that you may add to your playlist layouts.

Instalace

Stažení zdrojových souborů
Latest release: moodbar-0.1.2.tar.gz — this is the Moodbar source package, which contains the Moodbar program (which generates .mood files from music files), and a GStreamer plugin that does the work. The Moodbar package needs GStreamer 0.10.* installed, plus the 0.10.* version of various plugins. Be sure to install the Moodbar package into the same prefix as GStreamer — follow the instructions in the INSTALL file.

If you find any bugs, please submit a bug report at bugs.kde.org.

Balíčky pro Debian

A package for Moodbar is now available in Debian unstable. Simply run

apt-get install moodbar

. You will likely also want to install gstreamer0.10-plugins-ugly, gstreamer0.10-plugins-good, and gstreamer0.10-plugins-bad for format support.

Balíčky pro Kubuntu a Ubuntu

A package for Moodbar is available in the official package repository; just ensure the universe section is activated (which should be default anyway). Just install the package moodbar with your preferred package manager (Kpackagekit, Aptitude, Adept, Synaptic). You will likely also want to install gstreamer0.10-plugins-ugly, gstreamer0.10-plugins-good, and gstreamer0.10-plugins-bad for format support.

Or, to install, paste this into Firefox or Konqueror and hit Enter.

apt://moodbar,gstreamer0.10-plugins-ugly,gstreamer0.10-plugins-good,gstreamer0.10-plugins-bad?section=universe?refresh=yep
Sestavení pro Gentoo

Moodbar is available in Portage, simply

emerge moodbar

Unofficial ebuilds are no longer required.

Balíčky RPM

If you are a rpm-based distro user, you can build a .rpm using rpmbuild with latest gstreamer-plugins-moodbar.spec. The binary package will be soon available for PLD-linux distro.

Fedora

In Fedora 7 and higher (up to 16 as of this writing) Moodbar is available in the default repositories. Simply install it with your PackageKit GUI or with the following yum command:

yum install moodbar
Balíčky pro openSUSE

openSUSE 11.0 and later, automatically install the following packages:

  • gstreamer-0_10-fluendo-mp3
  • gstreamer-0_10-plugins-base

Also, if your songs contain ID3 tags, you must install

  • gstreamer-0_10-plugins-good
Instalace náladového pruhu

1-Click Install for openSUSE 11. - just choose your version and installation procedure will do the rest:

To install, add the correct repository for your version of openSUSE to YaST then make sure the following packages are installed:

  • gstreamer-0_10-plugins-good
  • gstreamer-0_10-plugins-ugly
  • gstreamer-0_10-plugins-moodbar
  • mad

For details on how to add repositories, see the openSUSE wiki.

If you are using the Smart software management tool, add the channel by entering the following at the command line, remember to change the URL to match your version of openSUSE:

smart channel --add http://software.opensuse.org/download/home:/d7/openSUSE_10.2/home:d7.repo

Then enter

smart update home:d7

You can now install the required packages by

smart install gstreamer10-plugins-moodbar

Dependencies are resolved automatically.

Balíčky pro Mandrivu

First of all, you need to add PLF repositories, so visit easyurpmi.zarb.org and add them to your repositories list. Then simply install the following packages:

  • gstreamer0.10-moodbar
  • gstreamer0.10-plugins-ugly
  • gstreamer0.10-plugins-good
  • gstreamer0.10-plugins-bad
Arch Linux

There is a PKGBUILD for Moodbar in the Arch User Repository (AUR) available here.

For more information about the AUR and working with PKGBUILDs, see the AUR User Guidelines.

FreeBSD

There is a port: audio/gstreamer-plugins-moodbar here.

To install the port:

cd /usr/ports/audio/gstreamer-plugins-moodbar/ && make install clean

To add the package:

pkg_add -r gstreamer-plugins-moodbar

Skript pro vytvoření souboru pro náladový pruh

Here is a simple bash script that will add .mood files to your entire collection. It adds mood files for all files matching the extensions in the current directory and all subdirectories, so it's best run from the base of your music directory.

#!/bin/bash
 DIR=${1:-.}
 LAST=~/.moodbar-lastreadsong
 C_RET=0
 
 control_c()        # run if user hits control-c
 {
   echo "" > "$LAST"
   echo "Exiting..."
   exit
 }
 
 if [ -e "$LAST" ]; then
   read filetodelete < "$LAST"
   rm "$filetodelete" "$LAST"
 fi
 exec 9< <(find "$DIR" -type f -regextype posix-awk -iregex '.*\.(mp3|ogg|flac|wma)') # you may need to add m4a and mp4
 while read i
 do
   TEMP="${i%.*}.mood"
   OUTF=`echo "$TEMP" | sed 's#\(.*\)/\([^,]*\)#\1/.\2#'`
   trap 'control_c "$OUTF"' INT
   if [ ! -e "$OUTF" ] || [ "$i" -nt "$OUTF" ]; then
     moodbar -o "$OUTF" "$i" || { C_RET=1; echo "An error occurred!" >&2; }
   fi
 done <&9
 exec 9<&-
 
 exit $C_RET

Copy and paste the above into a text file named moodbar.sh in your music directory and run the following commands:

cd /path/to/music
 bash moodbar.sh

Alternatively if the above does not work, you may try:

chmod +x moodbar.sh
 ./moodbar.sh

This may take a very long time for large collections! Note that the moodbars will not appear in Amarok until Amarok rescans the collection. The generated mood files will be dotfiles (i.e., prefixed with a full stop), or hidden files - so keep this in mind if you can't find any generated mood files.

Based on the above script, an alternative for multicore CPUs:

#!/bin/bash
 NUMCPU="$(grep ^processor /proc/cpuinfo | wc -l)"
 
 find . -type f -regextype posix-awk -iregex '.*\.(mp3|ogg|flac|wma)' | while read i ; do
 
        while [ `jobs -p | wc -l` -ge $NUMCPU ] ; do
                sleep 0.1
        done
 
        TEMP="${i%.*}.mood"
        OUTF=`echo "$TEMP" | sed 's#\(.*\)/\([^,]*\)#\1/.\2#'`
        if [ ! -e "$OUTF" ] ; then
                moodbar -o "$OUTF" "$i" &
        fi
 done

There is another script at Github, which shows previews of the generated mood files on the command line while they are being generated. Read more about it at the author's blog.

Řešení problémů

  • If the Moodbar executable gives you a bus error, that almost always means it can't decode (or can't find) your file. Take a look at the supported file types below for ideas on which GStreamer plugins to install. You can also try the command below to test whether GStreamer can decode your file:
    gst-launch filesrc location=[file] ! decodebin ! fakesink
  • If you are using the ffmpeg plugin to decode mp3s, you may also receive mysterious bus errors. The solution is to stop using the ffmpeg plugin, as it is extremely buggy — use mad instead.
  • If the Moodbar executable tells you that it can't find an element — i.e., it gives an error message like
    Could not create element of type fftwspectrum, please install it.
    — that usually means that you either don't have the required plugins installed (see the plugin list here), or that you didn't install the Moodbar package in the same prefix as GStreamer. If libmoodbar.so and libgstdecodebin.so are not in the same directory, then Moodbar is not installed in the same prefix as GStreamer. Please read the INSTALL file for instructions on how to configure the moodbar package correctly. Alternatively, if you know what you're doing, it may be easier for you to take a look at the GST_PLUGIN_PATH environment variable.
  • If you're wondering why the Moodbar isn't working, either not working at all or not working for a particular file, run the command below, where [file] is a music file:
    moodbar -o test.mood [file]
  • If you have multiple versions of GStreamer installed, make sure all of the required plugins are installed for version 0.10.* -- different versions cannot use each other's plugins.

Podporované typy souborů

You will need various Gstreamer plugins to enable Moodbar to analyze your files. Here is a list of the plugins you will need; make sure to install the 0.10.* version of each plugin:

Filetype Required Plugin Note
All gstreamer-0.10.*, gst-plugins-base, gst-plugins-good
mp3 gst-plugins-mad (in gst-plugins-ugly) ffmpeg plugin has problems; do not use for mp3
ogg gst-plugins-vorbis, gst-plugins-ogg
flac gst-plugins-flac
mp4 gst-plugins-faad, gst-plugins-bad
musepack gst-plugins-musepack
wma gst-plugins-ffmpeg

Snímky obrazovky

Moodbar in progress slider in Amarok 2
Moodbar in progress slider in Amarok 2