[Ubuntu Wiki] Update of "EarlySpeechDispatcher" by LukeYelavich

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Sun Jun 11 14:03:35 BST 2006


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The following page has been changed by LukeYelavich:
https://wiki.ubuntu.com/EarlySpeechDispatcher

The comment on the change is:
Remove this spec.

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   * '''Launchpad Entry''': https://launchpad.net/distros/ubuntu/+spec/early-speech-dispatcher
   * '''Created''': 2005-06-10 by LukeYelavich
   * '''Contributors''':
-  * '''Packages affected''': speech-dispatcher, alsa-lib, alsa-utils
+  * '''Packages affected''': 
  
- == Summary ==
+ == Status ==
  
- Set up speech-dispatcher to load as early as possible, to provide text to speech services.
+ This specifiction has been merged into the SpokenBoot specification.
  
- == Rationale ==
- 
- Users may wish to receive spoken feedback during system boot, particularly for tasks such as filesystem checking. Speech-dispatcher needs to be made available as soon as possible to provide speech support for such tasks. See SpokenBoot for more information.
- 
- == Use cases ==
- 
-  * Support for spoken feedback during bootup is the primary use for speech-dispatcher being loaded early. See SpokenBoot for more information.
- 
- == Scope ==
- 
- This specification discusses what needs to be done in order for speech dispatcher to be started as early as possible,
- 
- == Design ==
- 
- Since most of the synthesizers supported by speech-dispatcher are software, sound card drivers and volume levels need to be set before speech-dispatcher gets loaded. This would be done after the root filesystem is mounted read-only, and the new root has been pivoted to.
- 
- Speech-dispatcher would then be loaded, ensuring that its log files are stored on a tmpfs mount temporarily. Once the filesystem is remounted read-write, the daemon would then be restarted, and reset to point back to the original log location.
- 
- == Implementation ==
- 
-  * Sound services would have to be loaded a lot earlier in the boot process, so that speech-dispatcher has a sound card to use in the event that one is needed.
-  * A special init script would be written that would be executed when the filesystem was mounted read-only. The script would take care of loading a specially built copy of the speech-dispatcher daemon that would point to a config file with alternate log locations set. When the filesystem was remounted read-write, the same, or possibly another script would shut down the currently running daemon, and restart speech-dispatcher normally.
- 
- === Code ===
- 
- === Data preservation and migration ===
- 
- == Outstanding issues ==
- 
-  * Some form of sound card setup needs to be performed before speech-dispatcher can be used at early boot. Since soundcards havent been loaded yet, a mechanism for determining the default sound card module to use would be necessary. Sound libraries would also need to exist in /lib, due to /usr not being mounted yet.
-  * speech-dispatcher needs to obe promoted to main.
- 
- == BoF agenda and discussion ==
- 
- ----
- CategorySpec
- 


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