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ALSA project - the C library reference
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Runtime functions in configuration files

The ALSA library can modify the configuration at runtime. Several built-in functions are available.

A function is defined with the id @func and the function name. All other values in the current compound are used as configuration for the function. If the compound func.<function_name> is defined in the root node, then the library and function from this compound configuration are used, otherwise 'snd_func_' is prefixed to the string and code from the ALSA library is used. The definition of a function looks like:

func.remove_first_char {
lib "/usr/lib/"
func "extend_remove_first_char"

Function reference

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