Phonon/ru: Difference between revisions

    From KDE UserBase Wiki
    (Updating to match new version of source page)
    (Updating to match new version of source page)
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    ==Features==
    ==Features==


    * ''Centralized configuration of audio and video:'' Configuration of hardware and media frameworks are offered in a single, centralized dialogue, so that applications don't have to reimplement specialized configuration dialogs.
    * ''Centralized configuration of audio and video:'' Configuration of hardware and media frameworks are offered in a single, centralized dialog.
    * ''Purpose driven design:'' Instead of demanding that you select special audio outputs for special applications, '''Phonon''' applications describe what kind of sound output they make (Notifications, Music, Video, Communication), and lets you select outputs for these categories individually.
    * ''Purpose driven design:'' Instead of demanding that you select special audio outputs for applications, '''Phonon''' applications describe what kind of sound output they make and lets you select for these categories individually.
    * ''Automated device selection:'' The use of pluggable audio and video devices like USB or Bluetooth headsets is almost ubiquitous today. '''Phonon''' acts on information and signals from [[Special:myLanguage/Glossary#Solid|Solid]], which is KDE's hardware subsystem, and automatically makes use of new devices.
    * ''Automated device selection:'' Pluggable audio and video devices like USB or Bluetooth headsets become easy to use with '''Phonon'''. '''Phonon''' acts on information and signals from [[Special:myLanguage/Glossary#Solid|Solid]], which is KDE's hardware subsystem, and automatically makes use of new devices.


    ==Решение проблем==
    ==Решение проблем==
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    ===Phonon приводит к сбою программы===
    ===Phonon приводит к сбою программы===


    Please search on [https://bugs.kde.org/ bugs.kde.org] to see if the bug is already reported. If it isn't, please report it, and if it already exists but you have new information not already reported, please add your new information to the existing report.
    Please search on [https://bugs.kde.org/ bugs.kde.org] to see if the bug is already reported. If it is not, please report , your bug in detail. If the report already exists but you have new information, please add your new information to the existing report.


    ===Devices from ~/.asoundrc or /etc/asound.conf are not listed===
    ===Devices from ~/.asoundrc or /etc/asound.conf are not listed===
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    ==Backend libraries==
    ==Backend libraries==


    '''Phonon''' itself is just a thin shim, and makes use of ''backend libraries'' to provide the actual functionality.
    '''Phonon''' makes use of ''backend libraries'' to provide sound.
    * '''Phonon-Xine:''' This is the first proper backend for ''Phonon''.
    * '''Phonon-GStreamer:''' '''GStreamer''' is a multimedia library from the GNOME project. '''Phonon-GStreamer''' is currently the recommended Kubuntu backend, and under heavy development.
    * '''Phonon-VLC:''' VLC is a very popular cross-platform media player, and it is written using a multimedia library named '''libvlc''', which we also use to power a backend for '''Phonon'''. This is also under active development, and is receiving a lot of work from both '''VLC''' and '''Phonon''' developers.
    * '''Phonon-VLC:''' '''VLC''' is a very popular cross-platform media player. This is also under active development, and is receiving a lot of work from both '''VLC''' and '''Phonon''' developers.
    * '''Phonon-GStreamer:''' '''GStreamer''' is a multimedia library from the GNOME project. This backend is currently the recommended Kubuntu backend, although it is rather unstable.
    * '''Phonon-Xine:''' Formerly the most popular backend for ''Phonon''; now unmaintained, and deprecated.
    * '''Phonon-DS9:''' This is a native backend for Microsoft Windows utilizing '''DirectShow 9'''.
    * '''Phonon-DS9:''' Native backend for Microsoft Windows utilizing '''DirectShow 9'''.
    * '''Phonon-QT7:''' This is a native backend for Mac OS X, utilizing '''QuickTime 7'''.
    * '''Phonon-QT7:''' This is a native backend for Mac OS X, utilizing '''QuickTime 7'''.
    * '''Phonon-MPlayer:''' This is a third-party backend for '''Phonon''', utilizing the popular '''mplayer''' application for playback.
    * '''Phonon-MPlayer:''' This was a third-party backend for '''Phonon''', now unmaintained.
    * '''Phonon-NMM:''' This is an abandoned and unmaintained backend started by the Graphics Lab at Saarland University and Motama.
    * '''Phonon-NMM:''' This is an abandoned and unmaintained backend started by the Graphics Lab at Saarland University and Motama.
    <span id="Getting Involved"></span>
    <span id="Getting Involved"></span>
    Line 72: Line 72:


    There are several ways you can get involved as a user.
    There are several ways you can get involved as a user.
    * ''Reporting audio hardware:'' Download the [http://quickgit.kde.org/?p=kde-runtime.git&a=blob_plain&h=7e14ab0000cb60b2b3dc08711f40692b94101abc&f=phonon/libkaudiodevicelist/soundcardinfo.sh soundcardinfo.sh] script and run it, and attach the output to [https://bugs.kde.org/ bugs.kde.org]. This enables us to add your hardware information to our audio device database.
    * ''Promotion:'' KDE and '''Phonon''' are awesome! Spread the word.
    * ''Appreciation:'' Encouraging words can help lift the spirits of weary multimedia developers way beyond the clouds, when faced with nasty bugs and other challenges. Positive emails, messages on IRC, beer, pizza, gadgets and other developer fuel is very welcome!
    * ''Quality assurance:'' Simply run and use '''Phonon''', and report bugs and irregularities to the developers.
    * ''Quality assurance:'' Simply run and use '''Phonon''', and report bugs and irregularities to the developers.
    * ''Documentation:'' You can help expand this page and other '''Phonon''' documentation. It doesn't take much to help, and it helps!
    * ''Documentation:'' You can help expand this page and other '''Phonon''' documentation. It doesn't take much to help, and it helps!
    * ''Promotion:'' Spreading the word about KDE and '''Phonon''' is always welcome.
     
    * ''Appreciation:'' Encouraging words can help lift the spirits of weary multimedia developers way beyond the clouds, when faced with nasty bugs and other challenges. Positive emails, messages on IRC, beer, pizza, gadgets and other developer fuel is very welcome!


    [[Category:Multimedia]]
    [[Category:Multimedia]]
    [[Category:Advanced Users]]
    [[Category:Advanced Users]]

    Revision as of 18:35, 3 June 2011

    Phonon is a multimedia, multi-platform sound framework for the application developer. Phonon also provides several features and benefits for the end user.

    Features

    • Centralized configuration of audio and video: Configuration of hardware and media frameworks are offered in a single, centralized dialog.
    • Purpose driven design: Instead of demanding that you select special audio outputs for applications, Phonon applications describe what kind of sound output they make and lets you select for these categories individually.
    • Automated device selection: Pluggable audio and video devices like USB or Bluetooth headsets become easy to use with Phonon. Phonon acts on information and signals from Solid, which is KDE's hardware subsystem, and automatically makes use of new devices.

    Решение проблем

    Отсутствие звука

    Possible causes for no sound.

    Incorrect default ordering of devices

    Phonon automatically chooses available audio devices for the best sound. Unfortunately this doesn't always work. Look at Getting Involved for information on how you can help fix this.

    Missing device entries

    Perhaps Solid or other system libraries are reporting the same name for several devices, which makes Phonon unable to properly display these devices. Please see Getting Involved on how to help fix this.

    Unable to access audio device

    If your user account has insufficient permissions to access the audio device, Phonon will be unable to play sound. Please consult the documentation of your distribution on how to ensure that your user account is properly set up. If Pulseaudio is not used, make sure that your user account is a part of the audio user account group.

    Sound out of the wrong device

    This is related to the point above this. Also make sure that the correct device is listed at the top in the Sound and Video area of System Settings. In case an audio device isn't available (an USB-headset unplugged, for example), Phonon will attempt the next device in the list.

    Phonon приводит к сбою программы

    Please search on bugs.kde.org to see if the bug is already reported. If it is not, please report , your bug in detail. If the report already exists but you have new information, please add your new information to the existing report.

    Devices from ~/.asoundrc or /etc/asound.conf are not listed

    Make sure you have a name hint set for your device. An example of a complete device entry, with a hint:

    pcm.softvolPhonon {
         type softvol
         slave.pcm "default:CARD=0"
         control {
            name "Phonon"
            card 0
         }
         min_dB -51.0
         max_dB 0.0
         resolution 100
         hint {
            show on
            description "My Soundcard with extra Volume Control"
         }
    }

    Backend libraries

    Phonon makes use of backend libraries to provide sound.

    • Phonon-GStreamer: GStreamer is a multimedia library from the GNOME project. Phonon-GStreamer is currently the recommended Kubuntu backend, and under heavy development.
    • Phonon-VLC: VLC is a very popular cross-platform media player. This is also under active development, and is receiving a lot of work from both VLC and Phonon developers.
    • Phonon-Xine: Formerly the most popular backend for Phonon; now unmaintained, and deprecated.
    • Phonon-DS9: Native backend for Microsoft Windows utilizing DirectShow 9.
    • Phonon-QT7: This is a native backend for Mac OS X, utilizing QuickTime 7.
    • Phonon-MPlayer: This was a third-party backend for Phonon, now unmaintained.
    • Phonon-NMM: This is an abandoned and unmaintained backend started by the Graphics Lab at Saarland University and Motama.

    Getting Involved

    There are several ways you can get involved as a user.

    • Promotion: KDE and Phonon are awesome! Spread the word.
    • Appreciation: Encouraging words can help lift the spirits of weary multimedia developers way beyond the clouds, when faced with nasty bugs and other challenges. Positive emails, messages on IRC, beer, pizza, gadgets and other developer fuel is very welcome!
    • Quality assurance: Simply run and use Phonon, and report bugs and irregularities to the developers.
    • Documentation: You can help expand this page and other Phonon documentation. It doesn't take much to help, and it helps!