mirror of
https://github.com/mpv-player/mpv
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1c4586e8f9
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@10596 b3059339-0415-0410-9bf9-f77b7e298cf2
265 lines
9.2 KiB
C
265 lines
9.2 KiB
C
#ifndef _M_OPTION_H
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#define _M_OPTION_H
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typedef struct m_option_type m_option_type_t;
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typedef struct m_option m_option_t;
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struct m_struct_st;
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///////////////////////////// Options types declarations ////////////////////////////
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// Simple types
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extern m_option_type_t m_option_type_flag;
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extern m_option_type_t m_option_type_int;
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extern m_option_type_t m_option_type_float;
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extern m_option_type_t m_option_type_string;
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extern m_option_type_t m_option_type_string_list;
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extern m_option_type_t m_option_type_position;
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extern m_option_type_t m_option_type_print;
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extern m_option_type_t m_option_type_print_indirect;
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extern m_option_type_t m_option_type_subconfig;
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extern m_option_type_t m_option_type_imgfmt;
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// Func based types
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extern m_option_type_t m_option_type_func_full;
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extern m_option_type_t m_option_type_func_param;
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extern m_option_type_t m_option_type_func;
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typedef void (*m_opt_default_func_t)(m_option_t *, char*);
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typedef int (*m_opt_func_full_t)(m_option_t *, char *, char *);
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typedef int (*m_opt_func_param_t)(m_option_t *, char *);
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typedef int (*m_opt_func_t)(m_option_t *);
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///////////// Backward compat
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typedef m_opt_default_func_t cfg_default_func_t;
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typedef m_opt_func_full_t cfg_func_arg_param_t;
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typedef m_opt_func_param_t cfg_func_param_t;
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typedef m_opt_func_t cfg_func_t;
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typedef struct {
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void** list;
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void* name_off;
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void* info_off;
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void* desc_off;
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} m_obj_list_t;
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typedef struct {
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char* name;
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char** attribs;
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} m_obj_settings_t;
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extern m_option_type_t m_option_type_obj_settings_list;
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// Presets are mean to be used with options struct
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typedef struct {
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struct m_struct_st* in_desc;
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struct m_struct_st* out_desc;
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void* presets; // Pointer to an arry of struct defined by in_desc
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void* name_off; // Offset of the preset name inside the in_struct
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} m_obj_presets_t;
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extern m_option_type_t m_option_type_obj_presets;
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extern m_option_type_t m_option_type_custom_url;
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typedef struct {
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struct m_struct_st* desc; // Fields description
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char separator; // Field separator to use
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} m_obj_params_t;
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extern m_option_type_t m_option_type_obj_params;
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typedef struct {
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int start;
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int end;
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} m_span_t;
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extern m_obj_params_t m_span_params_def;
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// FIXME: backward compatibility
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#define CONF_TYPE_FLAG (&m_option_type_flag)
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#define CONF_TYPE_INT (&m_option_type_int)
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#define CONF_TYPE_FLOAT (&m_option_type_float)
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#define CONF_TYPE_STRING (&m_option_type_string)
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#define CONF_TYPE_FUNC (&m_option_type_func)
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#define CONF_TYPE_FUNC_PARAM (&m_option_type_func_param)
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#define CONF_TYPE_PRINT (&m_option_type_print)
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#define CONF_TYPE_PRINT_INDIRECT (&m_option_type_print_indirect)
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#define CONF_TYPE_FUNC_FULL (&m_option_type_func_full)
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#define CONF_TYPE_SUBCONFIG (&m_option_type_subconfig)
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#define CONF_TYPE_STRING_LIST (&m_option_type_string_list)
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#define CONF_TYPE_POSITION (&m_option_type_position)
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#define CONF_TYPE_IMGFMT (&m_option_type_imgfmt)
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#define CONF_TYPE_SPAN (&m_option_type_span)
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#define CONF_TYPE_OBJ_SETTINGS_LIST (&m_option_type_obj_settings_list)
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#define CONF_TYPE_OBJ_PRESETS (&m_option_type_obj_presets)
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#define CONF_TYPE_CUSTOM_URL (&m_option_type_custom_url)
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#define CONF_TYPE_OBJ_PARAMS (&m_option_type_obj_params)
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/////////////////////////////////////////////////////////////////////////////////////////////
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struct m_option_type {
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char* name;
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char* comments; // syntax desc, etc
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unsigned int size; // size needed for a save slot
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unsigned int flags;
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// parse is the only requiered function all others can be NULL
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// If dst if non-NULL it should create/update the save slot
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// If dst is NULL it should just test the validity of the arg if possible
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// Src tell from where come this setting (ie cfg file, command line, playlist, ....
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// It should return 1 if param was used, 0 if not.
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// On error it must return 1 of the error code below
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int (*parse)(m_option_t* opt,char *name, char *param, void* dst, int src);
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// Print back a value in human form
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char* (*print)(m_option_t* opt, void* val);
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// These 3 will be a memcpy in 50% of the case, it's called to save/restore the status of
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// the var it's there for complex type like CONF_TYPE_FUNC*
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// update a save slot (dst) from the current value in the prog (src)
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void (*save)(m_option_t* opt,void* dst, void* src);
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// set the current value (dst) from a save slot
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void (*set)(m_option_t* opt,void* dst, void* src);
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// Copy betewen 2 slot (if NULL and size > 0 a memcpy will be used
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void (*copy)(m_option_t* opt,void* dst, void* src);
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// Free the data allocated for a save slot if needed
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void (*free)(void* dst);
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};
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struct m_option {
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char *name;
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void *p;
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m_option_type_t* type;
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unsigned int flags;
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double min,max;
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// This used to be function pointer to hold a 'reverse to defaults' func.
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// Nom it can be used to pass any type of extra args.
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// Passing a 'default func' is still valid for all func based option types
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void* priv; // Type dependent data (for all kind of extended setting)
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};
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//////////////////////////////// Option flags /////////////////////////////////
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// Option flags
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#define M_OPT_MIN (1<<0)
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#define M_OPT_MAX (1<<1)
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#define M_OPT_RANGE (M_OPT_MIN|M_OPT_MAX)
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#define M_OPT_NOCFG (1<<2)
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#define M_OPT_NOCMD (1<<3)
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// This option is global : it won't be saved on push and the command
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// line parser will set it when it's parsed (ie. it won't be set later)
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// e.g options : -v, -quiet
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#define M_OPT_GLOBAL (1<<4)
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// Do not save this option : it won't be saved on push but the command
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// line parser will put it with it's entry (ie : it may be set later)
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// e.g options : -include
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#define M_OPT_NOSAVE (1<<5)
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// Emulate old behaviour by pushing the option only if it was set by the user
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#define M_OPT_OLD (1<<6)
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// FIXME: backward compatibility
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#define CONF_MIN M_OPT_MIN
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#define CONF_MAX M_OPT_MAX
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#define CONF_RANGE M_OPT_RANGE
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#define CONF_NOCFG M_OPT_NOCFG
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#define CONF_NOCMD M_OPT_NOCMD
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#define CONF_GLOBAL M_OPT_GLOBAL
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#define CONF_NOSAVE M_OPT_NOSAVE
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#define CONF_OLD M_OPT_OLD
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///////////////////////////// Option type flags ///////////////////////////////////
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// These flags are for the parsers. The description here apply to the m_config_t
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// based parsers (ie. cmd line and config file parsers)
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// Some parser will refuse option types that have some of these flags
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// This flag is used for the subconfig
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// When this flag is set, opt->p should point to another m_option_t array
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// Only the parse function will be called. If dst is set, it should create/update
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// an array of char* containg opt/val pairs.
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// Then the options in the child array will then be set automaticly.
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// You can only affect the way suboption are parsed.
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// Also note that suboptions may be directly accessed by using -option:subopt blah :-)
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#define M_OPT_TYPE_HAS_CHILD (1<<0)
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// If this flag is set the option type support option name with * at the end (used for -aa*)
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// This only affect the option name matching, the option type have to implement
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// the needed stuff.
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#define M_OPT_TYPE_ALLOW_WILDCARD (1<<1)
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// This flag indicate that the data is dynamicly allocated (opt->p point to a pointer)
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// It enable a little hack wich replace the initial value by a dynamic copy
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// in case the initial value is staticly allocated (pretty common with strings)
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#define M_OPT_TYPE_DYNAMIC (1<<2)
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/// If this is set the parse function doesn't directly return
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// the wanted thing. Options use this if for some reasons they have to wait
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// until the set call to be able to correctly set the target var.
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// So for those types you have to first parse and then set the target var
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// If this flag isn't set you can parse directly to the target var
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// It's used for the callback based option as the callback call may append
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// later on.
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#define M_OPT_TYPE_INDIRECT (1<<3)
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///////////////////////////// Parser flags ////////////////////////////////////////
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// Config mode : some parser type behave differently depending
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// on config->mode value wich is passed in the src param of parse()
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#define M_CONFIG_FILE 0
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#define M_COMMAND_LINE 1
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// Option parser error code
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#define M_OPT_UNKNOWN -1
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#define M_OPT_MISSING_PARAM -2
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#define M_OPT_INVALID -3
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#define M_OPT_OUT_OF_RANGE -4
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#define M_OPT_PARSER_ERR -5
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#define M_OPT_EXIT -6
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// FIXME: backward compatibility
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#define ERR_NOT_AN_OPTION M_OPT_UNKNOWN
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#define ERR_MISSING_PARAM M_OPT_MISSING_PARAM
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#define ERR_OUT_OF_RANGE M_OPT_OUT_OF_RANGE
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#define ERR_FUNC_ERR M_OPT_PARSER_ERR
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m_option_t* m_option_list_find(m_option_t* list,char* name);
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inline static int
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m_option_parse(m_option_t* opt,char *name, char *param, void* dst, int src) {
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return opt->type->parse(opt,name,param,dst,src);
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}
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inline static char*
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m_option_print(m_option_t* opt, void* val_ptr) {
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if(opt->type->print)
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return opt->type->print(opt,val_ptr);
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else
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return (char*)-1;
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}
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inline static void
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m_option_save(m_option_t* opt,void* dst, void* src) {
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if(opt->type->save)
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opt->type->save(opt,dst,src);
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}
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inline static void
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m_option_set(m_option_t* opt,void* dst, void* src) {
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if(opt->type->set)
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opt->type->set(opt,dst,src);
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}
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inline static void
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m_option_copy(m_option_t* opt,void* dst, void* src) {
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if(opt->type->copy)
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opt->type->set(opt,dst,src);
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else if(opt->type->size > 0)
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memcpy(dst,src,opt->type->size);
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}
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inline static void
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m_option_free(m_option_t* opt,void* dst) {
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if(opt->type->free)
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opt->type->free(dst);
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}
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#endif /* _M_OPTION_H */
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