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to write a module for soma you need to create a library .so which this functions useful for somad:

int module_init(char *);
to initialize the module. Must return 0 if everything is OK, otherwise somad doesn't let the module continue.

char *module_run(char *);
this must return something good for an audio sw such as mpg123 mplayer. this return value will be freed by somad with a free() when not null.

char **module_exec(char *);
this must return something good for array with NULL argoment as the last. this return value will be freed by somad with this code:

char **list, **old;

old=list=module_exec(...);

     while(*list) {
        free(*list);
        list++;
     }
     free(old);

char **module_list(char*);
this must return somthing good from array with NULL argoment as the last. this return value will be freed by somad with a free when not null.

int module_quit(char *);
the exit module function

char *module_name(void);
the module name

int module_time_stop(char *);
Must return a disactivation time of the play so that it sends back to another module_run.

You must include and read the file soma/soma.h which contains all the DEFINE and all the functions useful for the module.

good hacking!