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102 lines
4.5 KiB
Text
102 lines
4.5 KiB
Text
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Profiles management as part of alsa
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2004-05-16 Dirk Kalis <dirk.kalis@t-online.de>
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General
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=======
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Profiles management can be used from all applications like mixers or hardware control programs.
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It uses always alsactl and if directorys for the profiles file doesn't exists - mkdir.
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profiles file means the file in which the profiles will be stored.
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For other application the following files are needed:
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profiles.h - header file with the exported functions
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profiles.c - profiles implementation
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new_process.c - used to start external programs (alsactl and mkdir)
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strstr_icase_blank.c - string search function with ignoring case sensitivity, number of blanks, empty and
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comment lines (first non blank character '#')
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Profile numbers beginning with number 1 not 0 !
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Introduction
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============
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Profiles management stores and restores alsactl settings in a profiles file.
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Every card is stored in the profiles and every card profile can have a profile name.
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The profiles file has the following structure:
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[ profile <profile number> ]
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< Card <card number> >
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{ /<profile name/ }
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***************************
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*** alsactl settings ***
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***************************
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< /CARD <card number> >
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-----next card or next profile or end of file-----
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The header for profile name and card footer are optional.
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The functions in profile.c write always a card footer.
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DO NOT EDIT THIS FILE MANUALLY BECAUSE EVERY WRITE ACCESS MAKE A REORGANIZATION AND COMMENTS NOT WRITTEN IN
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THE ALSACTL SECTION WILL BE REMOVED! ALSO THE STRUCTURE OF THE FILE WILL BE MODIFIED!
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With the environment variables ALACTL_PROG and MKDIR_PROG can the compiled defaults for this
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programs be overwritten.
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e.g.:
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export ALSACTL_PROG=<path and name from alsactl>;export MKDIR_PROG=<path and name from mkdir>;<mixer program with profiles management>
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This pathes must not be a link !
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The profiles file name and path can explicit given.
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If is not given (by value NULL) two defined defaults will be used.
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Two variables can be set in the profiles header file for the default profiles file and for the system profiles file.
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The default for DEFAULT_PROFILERC is ~/<program name>/profiles.conf.
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The default for SYS_PROFILERC is /etc/<program name>/profiles.conf
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The profiles management search for profiles file if no profiles file name is given.
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Search order for restore:
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<given profiles file> if not -> <DEFAULT_PROFILERC> if doesn't exists -> <SYS_PROFILERC>
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Search order for save:
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<given profiles file> if not -> <DEFAULT_PROFILERC>
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The SYS_PROFILERC can only be written as root by explicit given profiles file name or
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you make a copy as root from one of the DEFAULT_PROFILERC.
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This files must not be a link!
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The delete_card function can be used to remove card profiles from profiles file if a card is removed from your pc.
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Miscellaneous cards can have same profile names - thats no problem.
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One card with equal profile names is also no problem if you use profile number for searching.
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If you use profile name for searching you will allways get the least profile number with this profile name.
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Profiles management in envy24control
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====================================
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In envy24control you can find a new map named "Profiles".
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In this map you can store 8 profiles for every envy24 card.
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You can change/give name by activating this profile and then click in the name entry.
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You can only change the name for the active profile.
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If all settings in the active profile are done you can save settings by clicking button "Save active profile".
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Error messages will only displayed on stderr in the text window if you start envy24control from xterm.
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To activate a profile click only the profile button.
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You can start envy24control with given profiles file and a default profile. if a default profile is given
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after initialisation of envy24control this profile will be activated.
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Default profile can be given by profile number or profile name.
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The accuracy of discrimination works in the following way:
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- if the given default profile contains a letter -> profile name
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- if the given default profile has a number outside the range [1 ... MAX_PROFILES] -> profile name
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- the given default profile is interpreted as profile number.
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Profile names should have at least one letter.
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For "Delete card from profiles" and equal profile names read above.
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One card with equal names is only a problem if you start envy24control with default profile name. You activate
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allways the profile with the least profile number with this profile name.
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Copyright
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=========
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Copyright Dirk Kalis<dirk.kalis@t-online.de>
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This is free and can be distributed under GPL.
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