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🎥 Command line media player
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C
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#ifndef MPLAYER_M_OPTION_H#define MPLAYER_M_OPTION_H
#include <float.h>#include <string.h>#include <stddef.h>#include <stdbool.h>
#include "misc/bstr.h"#include "audio/chmap.h"#include "common/common.h"
// m_option allows to parse, print and copy data of various types.
typedef struct m_option_type m_option_type_t;typedef struct m_option m_option_t;struct m_config;struct mp_log;struct mpv_node;struct mpv_global;
///////////////////////////// Options types declarations ////////////////////
// Simple typesextern const m_option_type_t m_option_type_bool;extern const m_option_type_t m_option_type_flag;extern const m_option_type_t m_option_type_dummy_flag;extern const m_option_type_t m_option_type_int;extern const m_option_type_t m_option_type_int64;extern const m_option_type_t m_option_type_byte_size;extern const m_option_type_t m_option_type_float;extern const m_option_type_t m_option_type_double;extern const m_option_type_t m_option_type_string;extern const m_option_type_t m_option_type_string_list;extern const m_option_type_t m_option_type_string_append_list;extern const m_option_type_t m_option_type_keyvalue_list;extern const m_option_type_t m_option_type_time;extern const m_option_type_t m_option_type_rel_time;extern const m_option_type_t m_option_type_choice;extern const m_option_type_t m_option_type_flags;extern const m_option_type_t m_option_type_msglevels;extern const m_option_type_t m_option_type_print_fn;extern const m_option_type_t m_option_type_imgfmt;extern const m_option_type_t m_option_type_fourcc;extern const m_option_type_t m_option_type_afmt;extern const m_option_type_t m_option_type_color;extern const m_option_type_t m_option_type_geometry;extern const m_option_type_t m_option_type_size_box;extern const m_option_type_t m_option_type_channels;extern const m_option_type_t m_option_type_aspect;extern const m_option_type_t m_option_type_obj_settings_list;extern const m_option_type_t m_option_type_node;extern const m_option_type_t m_option_type_rect;extern const m_option_type_t m_option_type_cycle_dir;
// Used internally by m_config.cextern const m_option_type_t m_option_type_alias;extern const m_option_type_t m_option_type_cli_alias;extern const m_option_type_t m_option_type_removed;extern const m_option_type_t m_option_type_subconfig;
// Callback used by m_option_type_print_fn options.typedef void (*m_opt_print_fn)(struct mp_log *log);
enum m_rel_time_type { REL_TIME_NONE, REL_TIME_ABSOLUTE, REL_TIME_RELATIVE, REL_TIME_PERCENT, REL_TIME_CHAPTER,};
struct m_rel_time { double pos; enum m_rel_time_type type;};
struct m_color { uint8_t r, g, b, a;};
struct m_geometry { int x, y, w, h; bool xy_valid : 1, wh_valid : 1; bool w_per : 1, h_per : 1; bool x_sign : 1, y_sign : 1, x_per : 1, y_per : 1; int ws; // workspace; valid if !=0};
void m_geometry_apply(int *xpos, int *ypos, int *widw, int *widh, int scrw, int scrh, bool center, struct m_geometry *gm);void m_rect_apply(struct mp_rect *rc, int w, int h, struct m_geometry *gm);
struct m_channels { bool set : 1; bool auto_safe : 1; struct mp_chmap *chmaps; int num_chmaps;};
struct m_obj_desc { // Name which will be used in the option string const char *name; // Will be printed when "help" is passed const char *description; // Size of the private struct int priv_size; // If not NULL, default values for private struct const void *priv_defaults; // Options which refer to members in the private struct const struct m_option *options; // Prefix for each of the above options (none if NULL). const char *options_prefix; // For free use by the implementer of m_obj_list.get_desc const void *p; // Don't list entry with "help" bool hidden; // Callback to print custom help if "vf=entry=help" is passed void (*print_help)(struct mp_log *log); // Set by m_obj_list_find(). If the requested name is an old alias, this // is set to the old name (while the name field uses the new name). const char *replaced_name; // For convenience: these are added as global command-line options. const struct m_sub_options *global_opts;};
// Extra definition needed for \ref m_option_type_obj_settings_list options.struct m_obj_list { bool (*get_desc)(struct m_obj_desc *dst, int index); const char *description; // Can be set to a NULL terminated array of aliases const char *aliases[5][2]; // Allow a trailing ",", which adds an entry with name="" bool allow_trailer; // Callback to test whether an unknown entry should be allowed. (This can // be useful if adding them as explicit entries is too much work.) bool (*check_unknown_entry)(const char *name); // Allow syntax for disabling entries. bool allow_disable_entries; // This helps with confusing error messages if unknown flag options are used. bool disallow_positional_parameters; // Each sub-item is backed by global options (for AOs and VOs). bool use_global_options; // Callback to print additional custom help if "vf=help" is passed void (*print_help_list)(struct mp_log *log); // Callback to print help for _unknown_ entries with "vf=entry=help" void (*print_unknown_entry_help)(struct mp_log *log, const char *name); // Get lavfi filters for option-info/[av]f/choices. const char **(*get_lavfi_filters)(void *talloc_ctx);};
// Find entry by namebool m_obj_list_find(struct m_obj_desc *dst, const struct m_obj_list *list, bstr name);
// The data type used by \ref m_option_type_obj_settings_list.typedef struct m_obj_settings { // Type of the object. char *name; // Optional user-defined name. char *label; // User enable flag. bool enabled; // NULL terminated array of parameter/value pairs. char **attribs;} m_obj_settings_t;
bool m_obj_settings_equal(struct m_obj_settings *a, struct m_obj_settings *b);
struct m_opt_choice_alternatives { char *name; int value;};
const char *m_opt_choice_str(const struct m_opt_choice_alternatives *choices, int value);
typedef int (*m_opt_generic_validate_fn)(struct mp_log *log, const m_option_t *opt, struct bstr name, void *value);
#define OPT_FUNC(name) name#define OPT_FUNC_IN(name, suffix) name ## _ ## suffix#define OPT_VALIDATE_FUNC(func, value_type, suffix) \int OPT_FUNC(func)(struct mp_log *log, const m_option_t *opt, \ struct bstr name, value_type value); \static inline int OPT_FUNC_IN(func, suffix)(struct mp_log *log, const m_option_t *opt, \ struct bstr name, void *value) { \ return OPT_FUNC(func)(log, opt, name, value); \} \int OPT_FUNC(func)(struct mp_log *log, const m_option_t *opt, \ struct bstr name, value_type value)
// m_option.priv points to this if OPT_SUBSTRUCT is usedstruct m_sub_options { const char *prefix; const struct m_option *opts; size_t size; const void *defaults; // Change flags passed to mp_option_change_callback() if any option that is // directly or indirectly part of this group is changed. int change_flags; // Return further sub-options, for example for optional components. If set, // this is called with increasing index (starting from 0), as long as true // is returned. If true is returned and *sub is set in any of these calls, // they are added as options. bool (*get_sub_options)(int index, const struct m_sub_options **sub);};
#define CONF_TYPE_BOOL (&m_option_type_bool)#define CONF_TYPE_FLAG (&m_option_type_flag)#define CONF_TYPE_INT (&m_option_type_int)#define CONF_TYPE_INT64 (&m_option_type_int64)#define CONF_TYPE_FLOAT (&m_option_type_float)#define CONF_TYPE_DOUBLE (&m_option_type_double)#define CONF_TYPE_STRING (&m_option_type_string)#define CONF_TYPE_STRING_LIST (&m_option_type_string_list)#define CONF_TYPE_IMGFMT (&m_option_type_imgfmt)#define CONF_TYPE_FOURCC (&m_option_type_fourcc)#define CONF_TYPE_AFMT (&m_option_type_afmt)#define CONF_TYPE_OBJ_SETTINGS_LIST (&m_option_type_obj_settings_list)#define CONF_TYPE_TIME (&m_option_type_time)#define CONF_TYPE_CHOICE (&m_option_type_choice)#define CONF_TYPE_NODE (&m_option_type_node)
// Possible option values. Code is allowed to access option data without going// through this union. It serves for self-documentation and to get minimal// size/alignment requirements for option values in general.union m_option_value { bool bool_; int flag; // not the C type "bool"! int int_; int64_t int64; float float_; double double_; char *string; char **string_list; char **keyvalue_list; int imgfmt; unsigned int fourcc; int afmt; m_obj_settings_t *obj_settings_list; double time; struct m_rel_time rel_time; struct m_color color; struct m_geometry geometry; struct m_geometry size_box; struct m_channels channels;};
// Keep fully zeroed instance of m_option_value to use as a default value, before// any specific union member is used. C standard says that `= {0}` activates and// initializes only the first member of the union, leaving padding bits undefined.static const union m_option_value m_option_value_default;
////////////////////////////////////////////////////////////////////////////
struct m_option_action { // The name of the suffix, e.g. "add" for a list. If the option is named // "foo", this will be available as "--foo-add". Note that no suffix (i.e. // "--foo" is implicitly always available. const char *name; // One of M_OPT_TYPE*. unsigned int flags;};
// Option type descriptionstruct m_option_type { const char *name; // Size needed for the data. unsigned int size; // One of M_OPT_TYPE*. unsigned int flags;
// Parse the data from a string. /** It is the only required function, all others can be NULL. * Generally should not be called directly outside of the options module, * but instead through \ref m_option_parse which calls additional option * specific callbacks during the process. * * \param log for outputting parser error or help messages * \param opt The option that is parsed. * \param name The full option name. * \param param The parameter to parse. * may not be an argument meant for this option * \param dst Pointer to the memory where the data should be written. * If NULL the parameter validity should still be checked. * \return On error a negative value is returned, on success the number * of arguments consumed. For details see \ref OptionParserReturn. */ int (*parse)(struct mp_log *log, const m_option_t *opt, struct bstr name, struct bstr param, void *dst);
// Print back a value in string form. /** \param opt The option to print. * \param val Pointer to the memory holding the data to be printed. * \return An allocated string containing the text value or (void*)-1 * on error. */ char *(*print)(const m_option_t *opt, const void *val);
// Print the value in a human readable form. Unlike print(), it doesn't // necessarily return the exact value, and is generally not parseable with // parse(). char *(*pretty_print)(const m_option_t *opt, const void *val);
// Copy data between two locations. Deep copy if the data has pointers. // The implementation must free *dst if memory allocation is involved. /** \param opt The option to copy. * \param dst Pointer to the destination memory. * \param src Pointer to the source memory. */ void (*copy)(const m_option_t *opt, void *dst, const void *src);
// Free the data allocated for a save slot. /** This is only needed for dynamic types like strings. * \param dst Pointer to the data, usually a pointer that should be freed and * set to NULL. */ void (*free)(void *dst);
// Add the value add to the value in val. For types that are not numeric, // add gives merely the direction. The wrap parameter determines whether // the value is clipped, or wraps around to the opposite max/min. void (*add)(const m_option_t *opt, void *val, double add, bool wrap);
// Multiply the value with the factor f. The callback must clip the result // to the valid value range of the option. void (*multiply)(const m_option_t *opt, void *val, double f);
// Set the option value in dst to the contents of src. // (If the option is dynamic, the old value in *dst has to be freed.) // Return values: // M_OPT_UNKNOWN: src is in an unknown format // M_OPT_INVALID: src is incorrectly formatted // >= 0: success // other error code: some other error, essentially M_OPT_INVALID refined int (*set)(const m_option_t *opt, void *dst, struct mpv_node *src);
// Copy the option value in src to dst. Use ta_parent for any dynamic // memory allocations. It's explicitly allowed to have mpv_node reference // static strings (and even mpv_node_list.keys), though. int (*get)(const m_option_t *opt, void *ta_parent, struct mpv_node *dst, void *src);
// Return whether the values are the same. (There are no "unordered" // results; for example, two floats with the value NaN compare equal. Other // ambiguous floats, such as +0 and -0 compare equal. Some option types may // incorrectly report unequal for values that are equal, such as sets (if // the element order is different, which incorrectly matters), but values // duplicated with m_option_copy() always return as equal. Empty strings // and NULL strings are equal. Ambiguous unicode representations compare // unequal.) // If not set, values are always considered equal (=> not really optional). bool (*equal)(const m_option_t *opt, void *a, void *b);
// Optional: list of suffixes, terminated with a {0} entry. An empty list // behaves like the list being NULL. const struct m_option_action *actions;};
// Option descriptionstruct m_option { // Option name. // Option declarations can use this as positional field. const char *name;
// Option type. const m_option_type_t *type;
// See \ref OptionFlags. unsigned int flags;
// Always force an option update even if the written value does not change. bool force_update;
// If the option is an alias, use the prefix of sub option. bool alias_use_prefix;
int offset;
// Most numeric types restrict the range to [min, max] if min<max (this // implies that if min/max are not set, the full range is used). In all // cases, the actual range is clamped to the type's native range. // Float type uses [FLT_MIN, FLT_MAX], and double type uses // [DBL_MIN, DBL_MAX], though by setting min or max to -/+INFINITY, // the range can be extended to INFINITY. // Preferably use M_RANGE() to set these fields. double min, max;
// Type dependent data (for all kinds of extended settings). void *priv;
// Initialize variable to given default before parsing options const void *defval;
// Print a warning when this option is used (for options with no direct // replacement.) const char *deprecation_message;
// Optional function that validates a param value for this option. m_opt_generic_validate_fn validate;
// Optional function that displays help. Will replace type-specific help. int (*help)(struct mp_log *log, const m_option_t *opt, struct bstr name);};
char *format_file_size(int64_t size);
// The following are also part of the M_OPT_* flags, and are used to update// certain groups of options.#define UPDATE_TERM (1 << 0) // terminal options#define UPDATE_SUB_FILT (1 << 1) // subtitle filter options#define UPDATE_OSD (1 << 2) // related to OSD rendering#define UPDATE_BUILTIN_SCRIPTS (1 << 3) // osc/ytdl/stats#define UPDATE_IMGPAR (1 << 4) // video image params overrides#define UPDATE_INPUT (1 << 5) // mostly --input-* options#define UPDATE_AUDIO (1 << 6) // --audio-channels etc.#define UPDATE_PRIORITY (1 << 7) // --priority (Windows-only)#define UPDATE_SCREENSAVER (1 << 8) // --stop-screensaver#define UPDATE_VOL (1 << 9) // softvol related options#define UPDATE_LAVFI_COMPLEX (1 << 10) // --lavfi-complex#define UPDATE_HWDEC (1 << 11) // --hwdec#define UPDATE_DVB_PROG (1 << 12) // some --dvbin-...#define UPDATE_SUB_HARD (1 << 13) // subtitle opts. that need full reinit#define UPDATE_SUB_EXTS (1 << 14) // update internal list of sub exts#define UPDATE_VIDEO (1 << 15) // force redraw if needed#define UPDATE_VO (1 << 16) // reinit the VO#define UPDATE_CLIPBOARD (1 << 17) // reinit the clipboard#define UPDATE_DEMUXER (1 << 18) // invalidate --prefetch-playlist's data#define UPDATE_AD (1 << 19) // reinit audio chain and decoder#define UPDATE_VD (1 << 20) // reinit video chain and decoder#define UPDATE_OPT_LAST (1 << 20)
// All bits between of UPDATE_ flags#define UPDATE_OPTS_MASK ((UPDATE_OPT_LAST << 1) - 1)
// The option is forbidden in config files.#define M_OPT_NOCFG (1 << 30)
// The option should be set during command line pre-parsing#define M_OPT_PRE_PARSE (1 << 29)
// The option expects a file name (or a list of file names)#define M_OPT_FILE (1 << 28)
// Do not add as property.#define M_OPT_NOPROP (1 << 27)
// Enable special semantics for some options when parsing the string "help".#define M_OPT_HAVE_HELP (1 << 26)
// type_float/type_double: string "default" is parsed as NaN (and reverse)#define M_OPT_DEFAULT_NAN (1 << 25)
// type time: string "no" maps to MP_NOPTS_VALUE (if unset, NOPTS is rejected)// and// parsing: "--no-opt" is parsed as "--opt=no"#define M_OPT_ALLOW_NO (1 << 24)
// type channels: disallow "auto" (still accept ""), limit list to at most 1 item.#define M_OPT_CHANNELS_LIMITED (1 << 23)
// type_float/type_double: controls if pretty print should trim trailing zeros#define M_OPT_FIXED_LEN_PRINT (1 << 22)
// Like M_OPT_TYPE_OPTIONAL_PARAM.#define M_OPT_OPTIONAL_PARAM (1 << 21)
static_assert(!(UPDATE_OPTS_MASK & M_OPT_OPTIONAL_PARAM), "");
// These flags are used to describe special parser capabilities or behavior.
// The parameter is optional and by default no parameter is preferred. If// ambiguous syntax is used ("--opt value"), the command line parser will// assume that the argument takes no parameter. In config files, these// options can be used without "=" and value.#define M_OPT_TYPE_OPTIONAL_PARAM (1 << 0)
// Behaves fundamentally like a choice or a superset of it (all allowed string// values are from a fixed set, although other types of values like numbers// might be allowed too). E.g. m_option_type_choice and m_option_type_flag.#define M_OPT_TYPE_CHOICE (1 << 1)
// When m_option.min/max are set, they denote a value range.#define M_OPT_TYPE_USES_RANGE (1 << 2)
///////////////////////////// Parser flags /////////////////////////////////
// OptionParserReturn//// On success parsers return a number >= 0.//// To indicate that MPlayer should exit without playing anything,// parsers return M_OPT_EXIT.//// On error one of the following (negative) error codes is returned:
// For use by higher level APIs when the option name is invalid.#define M_OPT_UNKNOWN -1
// Returned when a parameter is needed but wasn't provided.#define M_OPT_MISSING_PARAM -2
// Returned when the given parameter couldn't be parsed.#define M_OPT_INVALID -3
// Returned if the value is "out of range". The exact meaning may// vary from type to type.#define M_OPT_OUT_OF_RANGE -4
// The option doesn't take a parameter.#define M_OPT_DISALLOW_PARAM -5
// Returned when MPlayer should exit. Used by various help stuff.#define M_OPT_EXIT -6
char *m_option_strerror(int code);
// Base function to parse options. Includes calling help and validation// callbacks. Only when this functionality is for some reason required to not// happen should the parse function pointer be utilized by itself.//// See \ref m_option_type::parse.int m_option_parse(struct mp_log *log, const m_option_t *opt, struct bstr name, struct bstr param, void *dst);
// Helper to print options, see \ref m_option_type::print.static inline char *m_option_print(const m_option_t *opt, const void *val_ptr){ if (opt->type->print) return opt->type->print(opt, val_ptr); else return NULL;}
static inline char *m_option_pretty_print(const m_option_t *opt, const void *val_ptr, bool fixed_len){ m_option_t o = *opt; if (fixed_len) o.flags |= M_OPT_FIXED_LEN_PRINT; if (opt->type->pretty_print) return opt->type->pretty_print(&o, val_ptr); else return m_option_print(&o, val_ptr);}
// Helper around \ref m_option_type::copy.static inline void m_option_copy(const m_option_t *opt, void *dst, const void *src){ if (opt->type->copy) opt->type->copy(opt, dst, src);}
// Helper around \ref m_option_type::free.static inline void m_option_free(const m_option_t *opt, void *dst){ if (opt->type->free) opt->type->free(dst);}
// see m_option_type.setstatic inline int m_option_set_node(const m_option_t *opt, void *dst, struct mpv_node *src){ if (opt->type->set) return opt->type->set(opt, dst, src); return M_OPT_UNKNOWN;}
// Call m_option_parse for strings, m_option_set_node otherwise.int m_option_set_node_or_string(struct mp_log *log, const m_option_t *opt, const char *name, void *dst, struct mpv_node *src);
// see m_option_type.getstatic inline int m_option_get_node(const m_option_t *opt, void *ta_parent, struct mpv_node *dst, void *src){ if (opt->type->get) return opt->type->get(opt, ta_parent, dst, src); return M_OPT_UNKNOWN;}
static inline bool m_option_equal(const m_option_t *opt, void *a, void *b){ // Handle trivial equivalence. // If not implemented, assume this type has no actual values => always equal. if (a == b || !opt->type->equal) return true; return opt->type->equal(opt, a, b);}
int m_option_required_params(const m_option_t *opt);
extern const char m_option_path_separator;
// Cause a compilation warning if typeof(expr) != type.// Should be used with pointer types only.#define MP_EXPECT_TYPE(type, expr) (0 ? (type)0 : (expr))
// This behaves like offsetof(type, member), but will cause a compilation// warning if typeof(member) != expected_member_type.// It uses some trickery to make it compile as expression.#define MP_CHECKED_OFFSETOF(type, member, expected_member_type) \ (offsetof(type, member) + (0 && MP_EXPECT_TYPE(expected_member_type*, \ &((type*)0)->member)))
#define OPT_TYPED_FIELD(type_, c_type, field) \ .type = &type_, \ .offset = MP_CHECKED_OFFSETOF(OPT_BASE_STRUCT, field, c_type)
#define OPTION_LIST_SEPARATOR ','
#define OPTDEF_STR(s) .defval = (void *)&(char * const){s}#define OPTDEF_INT(i) .defval = (void *)&(const int){i}#define OPTDEF_INT64(i) .defval = (void *)&(const int64_t){i}#define OPTDEF_FLOAT(f) .defval = (void *)&(const float){f}#define OPTDEF_DOUBLE(d) .defval = (void *)&(const double){d}
#define M_RANGE(a, b) .min = (double) (a), .max = (double) (b)
#define OPT_BOOL(field) \ OPT_TYPED_FIELD(m_option_type_bool, bool, field)
#define OPT_INT(field) \ OPT_TYPED_FIELD(m_option_type_int, int, field)
#define OPT_INT64(field) \ OPT_TYPED_FIELD(m_option_type_int64, int64_t, field)
#define OPT_FLOAT(field) \ OPT_TYPED_FIELD(m_option_type_float, float, field)
#define OPT_DOUBLE(field) \ OPT_TYPED_FIELD(m_option_type_double, double, field)
#define OPT_STRING(field) \ OPT_TYPED_FIELD(m_option_type_string, char*, field)
#define OPT_STRINGLIST(field) \ OPT_TYPED_FIELD(m_option_type_string_list, char**, field)
#define OPT_KEYVALUELIST(field) \ OPT_TYPED_FIELD(m_option_type_keyvalue_list, char**, field)
#define OPT_PATHLIST(field) \ OPT_TYPED_FIELD(m_option_type_string_list, char**, field), \ .priv = (void *)&m_option_path_separator
#define OPT_TIME(field) \ OPT_TYPED_FIELD(m_option_type_time, double, field)
#define OPT_REL_TIME(field) \ OPT_TYPED_FIELD(m_option_type_rel_time, struct m_rel_time, field)
#define OPT_COLOR(field) \ OPT_TYPED_FIELD(m_option_type_color, struct m_color, field)
#define OPT_BYTE_SIZE(field) \ OPT_TYPED_FIELD(m_option_type_byte_size, int64_t, field)
// (Approximation of x<=SIZE_MAX/2 for m_option.max, which is double.)#define M_MAX_MEM_BYTES MPMIN((1ULL << 62), (size_t)-1 / 2)
#define OPT_GEOMETRY(field) \ OPT_TYPED_FIELD(m_option_type_geometry, struct m_geometry, field)
#define OPT_SIZE_BOX(field) \ OPT_TYPED_FIELD(m_option_type_size_box, struct m_geometry, field)
#define OPT_RECT(field) \ OPT_TYPED_FIELD(m_option_type_rect, struct m_geometry, field)
#define OPT_TRACKCHOICE(field) \ OPT_CHOICE(field, {"no", -2}, {"auto", -1}), \ M_RANGE(0, 8190)
#define OPT_MSGLEVELS(field) \ OPT_TYPED_FIELD(m_option_type_msglevels, char **, field)
#define OPT_ASPECT(field) \ OPT_TYPED_FIELD(m_option_type_aspect, double, field)
#define OPT_IMAGEFORMAT(field) \ OPT_TYPED_FIELD(m_option_type_imgfmt, int, field)
#define OPT_AUDIOFORMAT(field) \ OPT_TYPED_FIELD(m_option_type_afmt, int, field)
#define OPT_CHANNELS(field) \ OPT_TYPED_FIELD(m_option_type_channels, struct m_channels, field)
#define OPT_INT_VALIDATE_FUNC(func) OPT_VALIDATE_FUNC(func, const int *, int)
#define OPT_INT_VALIDATE(field, validate_fn) \ OPT_TYPED_FIELD(m_option_type_int, int, field), \ .validate = OPT_FUNC_IN(validate_fn, int)
#define OPT_STRING_VALIDATE_FUNC(func) OPT_VALIDATE_FUNC(func, const char **, str)
#define OPT_STRING_VALIDATE(field, validate_fn) \ OPT_TYPED_FIELD(m_option_type_string, char*, field), \ .validate = OPT_FUNC_IN(validate_fn, str)
#define M_CHOICES(...) \ .priv = (void *)&(const struct m_opt_choice_alternatives[]){ __VA_ARGS__, {0}}
// Variant which takes a pointer to struct m_opt_choice_alternatives directly#define OPT_CHOICE_C(field, choices) \ OPT_TYPED_FIELD(m_option_type_choice, int, field), \ .priv = (void *)MP_EXPECT_TYPE(const struct m_opt_choice_alternatives*, choices)
// Variant where you pass a struct m_opt_choice_alternatives initializer#define OPT_CHOICE(field, ...) \ OPT_TYPED_FIELD(m_option_type_choice, int, field), \ M_CHOICES(__VA_ARGS__)
#define OPT_FLAGS(field, ...) \ OPT_TYPED_FIELD(m_option_type_flags, int, field), \ M_CHOICES(__VA_ARGS__)
#define OPT_SETTINGSLIST(field, objlist) \ OPT_TYPED_FIELD(m_option_type_obj_settings_list, m_obj_settings_t*, field), \ .priv = (void*)MP_EXPECT_TYPE(const struct m_obj_list*, objlist)
#define OPT_FOURCC(field) \ OPT_TYPED_FIELD(m_option_type_fourcc, int, field)
#define OPT_CYCLEDIR(field) \ OPT_TYPED_FIELD(m_option_type_cycle_dir, double, field)
// subconf must have the type struct m_sub_options.// All sub-options are prefixed with "name-" and are added to the current// (containing) option list.// If name is "", add the sub-options directly instead.// "field" refers to the field, that must be a pointer to a field described by// the subconf struct.#define OPT_SUBSTRUCT(field, subconf) \ .offset = offsetof(OPT_BASE_STRUCT, field), \ .type = &m_option_type_subconfig, .priv = (void*)&subconf
// Non-fields
#define OPT_ALIAS(newname) \ .type = &m_option_type_alias, .priv = newname, .offset = -1
// If "--optname" was removed, but "--newname" has the same semantics.// It will be redirected, and a warning will be printed on first use.#define OPT_REPLACED_MSG(newname, msg) \ .type = &m_option_type_alias, .priv = newname, \ .deprecation_message = (msg), .offset = -1
// Same, with a generic deprecation message.#define OPT_REPLACED(newname) OPT_REPLACED_MSG(newname, "")
// Alias, resolved on the CLI/config file/profile parser level only.#define OPT_CLI_ALIAS(newname) \ .type = &m_option_type_cli_alias, .priv = newname, \ .flags = M_OPT_NOPROP, .offset = -1
// "--optname" doesn't exist, but inform the user about a replacement with msg.#define OPT_REMOVED(msg) \ .type = &m_option_type_removed, .priv = msg, \ .deprecation_message = "", .flags = M_OPT_NOPROP, .offset = -1
#define OPT_PRINT(fn) \ .flags = M_OPT_NOCFG | M_OPT_PRE_PARSE | M_OPT_NOPROP, \ .type = &m_option_type_print_fn, \ .priv = MP_EXPECT_TYPE(m_opt_print_fn, fn), \ .offset = -1
#endif /* MPLAYER_M_OPTION_H */