mirror of
https://github.com/mpv-player/mpv
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b430c886aa
This should fix some issues, such as not being able to set the "no-video" option with MPV_FORMAT_FLAG. Note that this changes semantics a bit. Now setting an option strictly overwrite it, even if the corresponding command line option does not. For example, if we change --sub to append by default, then setting the "sub" option via the client API would still never append. (Oddly, this also applies to --vf-add, which will overwrite the old value when using the client API.) I'm doing this because there's no proper separation between the command line parser and setting an option using the MPV_FORMAT_STRING format. Maybe the solution to this mess would be adding format aware code (i.e. m_option_set_node) to every option type, and falling back to strings only if needed - but this would mean that you couldn't set e.g. an integer option using MPV_FORMAT_STRING, which doesn't seem to be ideal either. In conclusion, the current approach seems to be most robust, but I'm open to suggestions should someone find that these semantics are a problem.
231 lines
8.7 KiB
C
231 lines
8.7 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPLAYER_M_CONFIG_H
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#define MPLAYER_M_CONFIG_H
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#include <stddef.h>
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#include <stdbool.h>
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#include "bstr/bstr.h"
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// m_config provides an API to manipulate the config variables in MPlayer.
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// It makes use of the Options API to provide a context stack that
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// allows saving and later restoring the state of all variables.
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typedef struct m_profile m_profile_t;
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struct m_option;
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struct m_option_type;
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struct m_sub_options;
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struct m_obj_desc;
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struct m_obj_settings;
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struct mp_log;
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// Config option
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struct m_config_option {
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bool is_generated : 1; // Automatically added ("no-" options)
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bool is_set_from_cmdline : 1; // Set by user from command line
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const char *name; // Full name (ie option-subopt)
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const struct m_option *opt; // Option description
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void *data; // Raw value of the option
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const void *default_data; // Raw default value
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};
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// Config object
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/** \ingroup Config */
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typedef struct m_config {
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struct mp_log *log;
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// Registered options.
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struct m_config_option *opts; // all options, even suboptions
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int num_opts;
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// List of defined profiles.
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struct m_profile *profiles;
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// Depth when recursively including profiles.
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int profile_depth;
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struct m_opt_backup *backup_opts;
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bool use_profiles;
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bool is_toplevel;
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int (*includefunc)(void *ctx, char *filename, int flags);
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void *includefunc_ctx;
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void *optstruct; // struct mpopts or other
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} m_config_t;
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// Create a new config object.
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// talloc_ctx: talloc parent context for the m_config allocation
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// size: size of the optstruct (where option values are stored)
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// size==0 creates a config object with no option struct allocated
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// defaults: if not NULL, points to a struct of same type as optstruct, which
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// contains default values for all options
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// options: list of options. Each option defines a member of the optstruct
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// and a corresponding option switch or sub-option field.
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// suboptinit: if not NULL, initialize the suboption string (used for presets)
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// Note that the m_config object will keep pointers to defaults and options.
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struct m_config *m_config_new(void *talloc_ctx, struct mp_log *log,
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size_t size, const void *defaults,
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const struct m_option *options);
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struct m_config *m_config_from_obj_desc(void *talloc_ctx, struct mp_log *log,
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struct m_obj_desc *desc);
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struct m_config *m_config_from_obj_desc_noalloc(void *talloc_ctx,
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struct mp_log *log,
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struct m_obj_desc *desc);
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int m_config_set_obj_params(struct m_config *conf, char **args);
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// Search for the object with the given name in the defaults list, and apply
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// its parameters.
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int m_config_apply_defaults(struct m_config *config, const char *name,
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struct m_obj_settings *defaults);
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// Make sure the option is backed up. If it's already backed up, do nothing.
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// All backed up options can be restored with m_config_restore_backups().
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void m_config_backup_opt(struct m_config *config, const char *opt);
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// Call m_config_backup_opt() on all options.
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void m_config_backup_all_opts(struct m_config *config);
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// Restore all options backed up with m_config_backup_opt(), and delete the
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// backups afterwards.
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void m_config_restore_backups(struct m_config *config);
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enum {
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M_SETOPT_PRE_PARSE_ONLY = 1, // Silently ignore non-M_OPT_PRE_PARSE opt.
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M_SETOPT_CHECK_ONLY = 2, // Don't set, just check name/value
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M_SETOPT_FROM_CONFIG_FILE = 4, // Reject M_OPT_NOCFG opt. (print error)
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M_SETOPT_FROM_CMDLINE = 8, // Mark as set by command line
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M_SETOPT_BACKUP = 16, // Call m_config_backup_opt() before
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M_SETOPT_PRESERVE_CMDLINE = 32, // Don't set if already marked as FROM_CMDLINE
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};
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// Set the named option to the given string.
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// flags: combination of M_SETOPT_* flags (0 for normal operation)
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// Returns >= 0 on success, otherwise see OptionParserReturn.
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int m_config_set_option_ext(struct m_config *config, struct bstr name,
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struct bstr param, int flags);
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/* Set an option. (Like: m_config_set_option_ext(config, name, param, 0))
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* \param config The config object.
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* \param name The option's name.
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* \param param The value of the option, can be NULL.
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* \return See \ref OptionParserReturn.
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*/
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int m_config_set_option(struct m_config *config, struct bstr name,
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struct bstr param);
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static inline int m_config_set_option0(struct m_config *config,
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const char *name, const char *param)
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{
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return m_config_set_option(config, bstr0(name), bstr0(param));
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}
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// Similar to m_config_set_option_ext(), but set as data using mpv_node.
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struct mpv_node;
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int m_config_set_option_node(struct m_config *config, bstr name,
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struct mpv_node *data);
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int m_config_parse_suboptions(struct m_config *config, char *name,
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char *subopts);
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/* Get the option matching the given name.
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* \param config The config object.
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* \param name The option's name.
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*/
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const struct m_option *m_config_get_option(const struct m_config *config,
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struct bstr name);
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struct m_config_option *m_config_get_co(const struct m_config *config,
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struct bstr name);
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// Return the n-th option by position. n==0 is the first option. If there are
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// less than (n + 1) options, return NULL.
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const char *m_config_get_positional_option(const struct m_config *config, int n);
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// Return a hint to the option parser whether a parameter is/may be required.
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// The option may still accept empty/non-empty parameters independent from
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// this, and this function is useful only for handling ambiguous options like
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// flags (e.g. "--a" is ok, "--a=yes" is also ok).
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// Returns: error code (<0), or number of expected params (0, 1)
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int m_config_option_requires_param(struct m_config *config, bstr name);
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// Return all (visible) option names as NULL terminated string list.
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char **m_config_list_options(void *ta_parent, const struct m_config *config);
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/* Print a list of all registered options.
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* \param config The config object.
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*/
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void m_config_print_option_list(const struct m_config *config);
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/* Find the profile with the given name.
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* \param config The config object.
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* \param arg The profile's name.
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* \return The profile object or NULL.
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*/
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struct m_profile *m_config_get_profile0(const struct m_config *config,
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char *name);
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struct m_profile *m_config_get_profile(const struct m_config *config, bstr name);
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/* Get the profile with the given name, creating it if necessary.
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* \param config The config object.
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* \param arg The profile's name.
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* \return The profile object.
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*/
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struct m_profile *m_config_add_profile(struct m_config *config, char *name);
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/* Set the description of a profile.
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* Used by the config file parser when defining a profile.
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*
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* \param p The profile object.
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* \param arg The profile's name.
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*/
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void m_profile_set_desc(struct m_profile *p, bstr desc);
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/* Add an option to a profile.
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* Used by the config file parser when defining a profile.
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*
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* \param config The config object.
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* \param p The profile object.
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* \param name The option's name.
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* \param val The option's value.
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*/
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int m_config_set_profile_option(struct m_config *config, struct m_profile *p,
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bstr name, bstr val);
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/* Enables profile usage
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* Used by the config file parser when loading a profile.
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*
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* \param config The config object.
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* \param p The profile object.
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* \param flags M_SETOPT_* bits
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*/
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void m_config_set_profile(struct m_config *config, struct m_profile *p,
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int flags);
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void *m_config_alloc_struct(void *talloc_ctx,
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const struct m_sub_options *subopts);
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#endif /* MPLAYER_M_CONFIG_H */
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