mirror of https://github.com/mpv-player/mpv.git
267 lines
11 KiB
C
267 lines
11 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stdatomic.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include "common/common.h"
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#include "common/global.h"
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#include "common/msg.h"
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#include "common/msg_control.h"
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#include "m_config_core.h"
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#include "misc/bstr.h"
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#include "misc/dispatch.h"
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#include "options/m_option.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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struct mp_dispatch_queue;
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// Config option
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struct m_config_option {
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bool is_set_from_cmdline : 1; // Set by user from command line
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bool is_set_from_config : 1; // Set by a config file
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bool is_set_locally : 1; // Has a backup entry
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bool warning_was_printed : 1;
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int32_t opt_id; // For some m_config APIs
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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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};
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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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struct mpv_global *global; // can be NULL
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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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// Temporary during profile application.
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struct m_opt_backup **profile_backup_tmp;
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int profile_backup_flags;
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struct m_opt_backup *backup_opts;
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struct m_opt_backup *watch_later_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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// Notification after an option was successfully written to.
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// Uses flags as set in UPDATE_OPTS_MASK.
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// self_update==true means the update was caused by a call to
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// m_config_notify_change_opt_ptr(). If false, it's caused either by
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// m_config_set_option_*() (and similar) calls or external updates.
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void (*option_change_callback)(void *ctx, struct m_config_option *co,
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int flags, bool self_update);
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void *option_change_callback_ctx;
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// For the command line parser
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int recursion_depth;
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void *optstruct; // struct mpopts or other
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// Private. Non-NULL if data was allocated. m_config_option.data uses it.
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// API users call m_config_set_update_dispatch_queue() to get async updates.
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struct m_config_cache *cache;
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// Private. Thread-safe shadow memory; only set for the main m_config.
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struct m_config_shadow *shadow;
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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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// root: description of all options
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// Note that the m_config object will keep pointers to root and log.
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struct m_config *m_config_new(void *talloc_ctx, struct mp_log *log,
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const struct m_sub_options *root);
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// Create a m_config for the given desc. This is for --af/--vf, which have
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// different sub-options for every filter (represented by separate desc
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// structs).
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// args is an array of key/value pairs (args=[k0, v0, k1, v1, ..., NULL]).
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struct m_config *m_config_from_obj_desc_and_args(void *ta_parent,
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struct mp_log *log, struct mpv_global *global, struct m_obj_desc *desc,
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char **args);
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// Like m_config_from_obj_desc_and_args(), but don't allocate option the
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// struct, i.e. m_config.optstruct==NULL. This is used by the sub-option
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// parser (--af/--vf, to a lesser degree --ao/--vo) to check sub-option names
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// and types.
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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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// 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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// Backup options on startup so that quit-watch-later can compare the current
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// values to their backups, and save them only if they have been changed.
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void m_config_backup_watch_later_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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// Whether opt_name is different from its initial value.
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bool m_config_watch_later_backup_opt_changed(struct m_config *config,
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char *opt_name);
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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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M_SETOPT_NO_PRE_PARSE = 128, // Reject M_OPT_PREPARSE options
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M_SETOPT_NO_OVERWRITE = 256, // Skip options marked with FROM_*
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};
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// Set the named option to the given string. This is for command line and config
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// file use only.
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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_cli(struct m_config *config, struct bstr name,
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struct bstr param, int flags);
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// Similar to m_config_set_option_cli(), but set as data in its native format.
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// This takes care of some details like sending change notifications.
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// The type data points to is as in: co->opt
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int m_config_set_option_raw(struct m_config *config, struct m_config_option *co,
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void *data, int flags);
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void m_config_mark_co_flags(struct m_config_option *co, int flags);
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// Convert the mpv_node to raw option data, then call m_config_set_option_raw().
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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, int flags);
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// Return option descriptor. You shouldn't use this.
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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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// Same as above, but does not resolve aliases or trigger warning messages.
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struct m_config_option *m_config_get_co_raw(const struct m_config *config,
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struct bstr name);
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// Special uses only. Look away.
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int m_config_get_co_count(struct m_config *config);
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struct m_config_option *m_config_get_co_index(struct m_config *config, int index);
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const void *m_config_get_co_default(const struct m_config *config,
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struct m_config_option *co);
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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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// Notify m_config_cache users that the option has (probably) changed its value.
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// This will force a self-notification back to config->option_change_callback.
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void m_config_notify_change_opt_ptr(struct m_config *config, void *ptr);
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// Exactly like m_config_notify_change_opt_ptr(), but the option change callback
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// (config->option_change_callback()) is invoked with self_update=false, if at all.
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void m_config_notify_change_opt_ptr_notify(struct m_config *config, void *ptr);
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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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void m_config_print_option_list(const struct m_config *config, const char *name);
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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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// Apply and clear the default profile - it's the only profile that new config
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// files do not simply append to (for configfile parser).
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void m_config_finish_default_profile(struct m_config *config, int flags);
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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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/* 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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* Returns error code (<0) or 0 on success
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*/
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int m_config_set_profile(struct m_config *config, char *name, int flags);
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// Attempt to "unset" a profile if possible.
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int m_config_restore_profile(struct m_config *config, char *name);
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struct mpv_node m_config_get_profiles(struct m_config *config);
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// Run async option updates here. This will call option_change_callback() on it.
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void m_config_set_update_dispatch_queue(struct m_config *config,
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struct mp_dispatch_queue *dispatch);
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