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* This file is part of mpv. * * mpv is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * mpv is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with mpv. If not, see <http://www.gnu.org/licenses/>. */
/// \file/// \ingroup Config
#include "config.h"
#include <stdlib.h>#include <stdio.h>#include <errno.h>#include <string.h>#include <strings.h>#include <assert.h>#include <stdbool.h>#include <pthread.h>
#include "libmpv/client.h"
#include "mpv_talloc.h"
#include "m_config.h"#include "options/m_option.h"#include "common/common.h"#include "common/global.h"#include "common/msg.h"#include "common/msg_control.h"#include "misc/dispatch.h"#include "misc/node.h"#include "osdep/atomic.h"
extern const char mp_help_text[];
static const union m_option_value default_value;
// Profiles allow to predefine some sets of options that can then// be applied later on with the internal -profile option.#define MAX_PROFILE_DEPTH 20// Maximal include depth.#define MAX_RECURSION_DEPTH 8
// Maximum possibly option name length (as it appears to the user).#define MAX_OPT_NAME_LEN 80
// For use with m_config_cache.struct m_config_shadow { pthread_mutex_t lock; // Incremented on every option change. mp_atomic_uint64 ts; // -- immutable after init // List of m_sub_options instances. // Index 0 is the top-level and is always present. // Immutable after init. // Invariant: a parent is always at a lower index than any of its children. struct m_config_group *groups; int num_groups; // -- protected by lock struct m_config_data *data; // protected shadow copy of the option data struct config_cache **listeners; int num_listeners;};
// Represents a sub-struct (OPT_SUBSTRUCT()).struct m_config_group { const struct m_sub_options *group; int group_count; // 1 + number of all sub groups owned by this (so // m_config_shadow.groups[idx..idx+group_count] is used // by the entire tree of sub groups included by this // group) int parent_group; // index of parent group into m_config_shadow.groups[], // or -1 for group 0 int parent_ptr; // ptr offset in the parent group's data, or -1 if // none const char *prefix; // concat_name(_, prefix, opt->name) => full name // (the parent names are already included in this)};
// A copy of option data. Used for the main option struct, the shadow data,// and copies for m_config_cache.struct m_config_data { struct m_config_shadow *shadow; // option definitions etc., main data copy int group_index; // start index into m_config.groups[] struct m_group_data *gdata; // user struct allocation (our copy of data) int num_gdata; // (group_index+num_gdata = end index)};
struct config_cache { struct m_config_cache *public;
struct m_config_data *data; // public data struct m_config_data *src; // global data (currently ==shadow->data) struct m_config_shadow *shadow; // global metadata uint64_t ts; // timestamp of this data copy bool in_list; // part of m_config_shadow->listeners[] int upd_group; // for "incremental" change notification int upd_opt;
// --- Implicitly synchronized by setting/unsetting wakeup_cb. struct mp_dispatch_queue *wakeup_dispatch_queue; void (*wakeup_dispatch_cb)(void *ctx); void *wakeup_dispatch_cb_ctx;
// --- Protected by shadow->lock void (*wakeup_cb)(void *ctx); void *wakeup_cb_ctx;};
// Per m_config_data state for each m_config_group.struct m_group_data { char *udata; // pointer to group user option struct uint64_t ts; // timestamp of the data copy};
struct m_profile { struct m_profile *next; char *name; char *desc; int num_opts; // Option/value pair array. char **opts;};
// In the file local case, this contains the old global value.struct m_opt_backup { struct m_opt_backup *next; struct m_config_option *co; void *backup;};
static struct m_config_cache *m_config_cache_alloc_internal(void *ta_parent, struct m_config_shadow *shadow, const struct m_sub_options *group);static void add_sub_group(struct m_config_shadow *shadow, const char *name_prefix, int parent_group_index, int parent_ptr, const struct m_sub_options *subopts);
static struct m_group_data *m_config_gdata(struct m_config_data *data, int group_index){ if (group_index < data->group_index || group_index >= data->group_index + data->num_gdata) return NULL;
return &data->gdata[group_index - data->group_index];}
// Like concat_name(), but returns either a, b, or buf. buf/buf_size is used as// target for snprintf(). (buf_size is recommended to be MAX_OPT_NAME_LEN.)static const char *concat_name_buf(char *buf, size_t buf_size, const char *a, const char *b){ assert(a); assert(b); if (!a[0]) return b; if (!b[0]) return a; snprintf(buf, buf_size, "%s-%s", a, b); return buf;}
// Return full option name from prefix (a) and option name (b). Returns either// a, b, or a talloc'ed string under ta_parent.static const char *concat_name(void *ta_parent, const char *a, const char *b){ char buf[MAX_OPT_NAME_LEN]; const char *r = concat_name_buf(buf, sizeof(buf), a, b); return r == buf ? talloc_strdup(ta_parent, r) : r;}
struct opt_iterate_state { // User can read these fields. int group_index; int opt_index; const struct m_option *opt; const char *full_name; // may point to name_buf
// Internal. int group_index_end; char name_buf[MAX_OPT_NAME_LEN]; struct m_config_shadow *shadow;};
// Start iterating all options and sub-options in the given group.static void opt_iterate_init(struct opt_iterate_state *iter, struct m_config_shadow *shadow, int group_index){ assert(group_index >= 0 && group_index < shadow->num_groups); iter->group_index = group_index; iter->group_index_end = group_index + shadow->groups[group_index].group_count; iter->opt_index = -1; iter->shadow = shadow;}
// Get the first or next option. Returns false if end reached. If this returns// true, most fields in *iter are valid.// This does not return pseudo-option entries (like m_option_type_subconfig).static bool opt_iterate_next(struct opt_iterate_state *iter){ if (iter->group_index < 0) return false;
while (1) { if (iter->group_index >= iter->group_index_end) { iter->group_index = -1; return false; }
iter->opt_index += 1;
struct m_config_group *g = &iter->shadow->groups[iter->group_index]; const struct m_option *opts = g->group->opts;
if (!opts || !opts[iter->opt_index].name) { iter->group_index += 1; iter->opt_index = -1; continue; }
iter->opt = &opts[iter->opt_index];
if (iter->opt->type == &m_option_type_subconfig) continue;
iter->full_name = concat_name_buf(iter->name_buf, sizeof(iter->name_buf), g->prefix, iter->opt->name); return true; } assert(0);}
static void list_profiles(struct m_config *config){ MP_INFO(config, "Available profiles:\n"); for (struct m_profile *p = config->profiles; p; p = p->next) MP_INFO(config, "\t%s\t%s\n", p->name, p->desc ? p->desc : ""); MP_INFO(config, "\n");}
static int show_profile(struct m_config *config, bstr param){ struct m_profile *p; if (!param.len) { list_profiles(config); return M_OPT_EXIT; } if (!(p = m_config_get_profile(config, param))) { MP_ERR(config, "Unknown profile '%.*s'.\n", BSTR_P(param)); return M_OPT_EXIT; } if (!config->profile_depth) MP_INFO(config, "Profile %s: %s\n", p->name, p->desc ? p->desc : ""); config->profile_depth++; for (int i = 0; i < p->num_opts; i++) { MP_INFO(config, "%*s%s=%s\n", config->profile_depth, "", p->opts[2 * i], p->opts[2 * i + 1]);
if (config->profile_depth < MAX_PROFILE_DEPTH && !strcmp(p->opts[2*i], "profile")) { char *e, *list = p->opts[2 * i + 1]; while ((e = strchr(list, ','))) { int l = e - list; if (!l) continue; show_profile(config, (bstr){list, e - list}); list = e + 1; } if (list[0] != '\0') show_profile(config, bstr0(list)); } } config->profile_depth--; if (!config->profile_depth) MP_INFO(config, "\n"); return M_OPT_EXIT;}
// The memcpys are supposed to work around the strict aliasing violation,// that would result if we just dereferenced a void** (where the void** is// actually casted from struct some_type* ). The dummy struct type is in// theory needed, because void* and struct pointers could have different// representations, while pointers to different struct types don't.static void *substruct_read_ptr(const void *ptr){ struct mp_dummy_ *res; memcpy(&res, ptr, sizeof(res)); return res;}static void substruct_write_ptr(void *ptr, void *val){ struct mp_dummy_ *src = val; memcpy(ptr, &src, sizeof(src));}
// Initialize a field with a given value. In case this is dynamic data, it has// to be allocated and copied. src can alias dst.static void init_opt_inplace(const struct m_option *opt, void *dst, const void *src){ // The option will use dynamic memory allocation iff it has a free callback. if (opt->type->free) { union m_option_value temp; memcpy(&temp, src, opt->type->size); memset(dst, 0, opt->type->size); m_option_copy(opt, dst, &temp); } else if (src != dst) { memcpy(dst, src, opt->type->size); }}
static void alloc_group(struct m_config_data *data, int group_index, struct m_config_data *copy){ assert(group_index == data->group_index + data->num_gdata); assert(group_index < data->shadow->num_groups); struct m_config_group *group = &data->shadow->groups[group_index]; const struct m_sub_options *opts = group->group;
MP_TARRAY_GROW(data, data->gdata, data->num_gdata); struct m_group_data *gdata = &data->gdata[data->num_gdata++];
struct m_group_data *copy_gdata = copy ? m_config_gdata(copy, group_index) : NULL;
*gdata = (struct m_group_data){ .udata = talloc_zero_size(data, opts->size), .ts = copy_gdata ? copy_gdata->ts : 0, };
if (opts->defaults) memcpy(gdata->udata, opts->defaults, opts->size);
char *copy_src = copy_gdata ? copy_gdata->udata : NULL;
for (int n = 0; opts->opts && opts->opts[n].name; n++) { const struct m_option *opt = &opts->opts[n];
if (opt->offset < 0 || opt->type->size == 0) continue;
void *dst = gdata->udata + opt->offset; const void *defptr = opt->defval ? opt->defval : dst; if (copy_src) defptr = copy_src + opt->offset;
init_opt_inplace(opt, dst, defptr); }
// If there's a parent, update its pointer to the new struct. if (group->parent_group >= data->group_index && group->parent_ptr >= 0) { struct m_group_data *parent_gdata = m_config_gdata(data, group->parent_group); assert(parent_gdata);
substruct_write_ptr(parent_gdata->udata + group->parent_ptr, gdata->udata); }}
static void free_option_data(void *p){ struct m_config_data *data = p;
for (int i = 0; i < data->num_gdata; i++) { struct m_group_data *gdata = &data->gdata[i]; struct m_config_group *group = &data->shadow->groups[data->group_index + i]; const struct m_option *opts = group->group->opts;
for (int n = 0; opts && opts[n].name; n++) { const struct m_option *opt = &opts[n];
if (opt->offset >= 0 && opt->type->size > 0) m_option_free(opt, gdata->udata + opt->offset); } }}
// Allocate data using the option description in shadow, starting at group_index// (index into m_config.groups[]).// If copy is not NULL, copy all data from there (for groups which are in both// m_config_data instances), in all other cases init the data with the defaults.static struct m_config_data *allocate_option_data(void *ta_parent, struct m_config_shadow *shadow, int group_index, struct m_config_data *copy){ assert(group_index >= 0 && group_index < shadow->num_groups); struct m_config_data *data = talloc_zero(ta_parent, struct m_config_data); talloc_set_destructor(data, free_option_data);
data->shadow = shadow; data->group_index = group_index;
struct m_config_group *root_group = &shadow->groups[group_index]; assert(root_group->group_count > 0);
for (int n = group_index; n < group_index + root_group->group_count; n++) alloc_group(data, n, copy);
return data;}
static void shadow_destroy(void *p){ struct m_config_shadow *shadow = p;
// must all have been unregistered assert(shadow->num_listeners == 0);
talloc_free(shadow->data); pthread_mutex_destroy(&shadow->lock);}
static struct m_config_shadow *m_config_shadow_new(const struct m_sub_options *root){ struct m_config_shadow *shadow = talloc_zero(NULL, struct m_config_shadow); talloc_set_destructor(shadow, shadow_destroy); pthread_mutex_init(&shadow->lock, NULL);
add_sub_group(shadow, NULL, -1, -1, root);
if (!root->size) return shadow;
shadow->data = allocate_option_data(shadow, shadow, 0, NULL);
return shadow;}
static void config_destroy(void *p){ struct m_config *config = p; config->option_change_callback = NULL; m_config_restore_backups(config);
talloc_free(config->cache); talloc_free(config->shadow);}
struct m_config *m_config_new(void *talloc_ctx, struct mp_log *log, const struct m_sub_options *root){ struct m_config *config = talloc(talloc_ctx, struct m_config); talloc_set_destructor(config, config_destroy); *config = (struct m_config){.log = log,};
config->shadow = m_config_shadow_new(root);
if (root->size) { config->cache = m_config_cache_alloc_internal(config, config->shadow, root); config->optstruct = config->cache->opts; }
struct opt_iterate_state it; opt_iterate_init(&it, config->shadow, 0); while (opt_iterate_next(&it)) { struct m_config_option co = { .name = talloc_strdup(config, it.full_name), .opt = it.opt, .group_index = it.group_index, };
struct m_group_data *gdata = config->cache ? m_config_gdata(config->cache->internal->data, it.group_index) : NULL;
if (gdata && co.opt->offset >= 0) co.data = gdata->udata + co.opt->offset;
MP_TARRAY_APPEND(config, config->opts, config->num_opts, co); }
return config;}
static struct m_config *m_config_from_obj_desc(void *talloc_ctx, struct mp_log *log, struct mpv_global *global, struct m_obj_desc *desc){ struct m_sub_options *root = talloc_ptrtype(NULL, root); *root = (struct m_sub_options){ .opts = desc->options, // (global == NULL got repurposed to mean "no alloc") .size = global ? desc->priv_size : 0, .defaults = desc->priv_defaults, };
struct m_config *c = m_config_new(talloc_ctx, log, root); talloc_steal(c, root); c->global = global; return c;}
struct m_config *m_config_from_obj_desc_noalloc(void *talloc_ctx, struct mp_log *log, struct m_obj_desc *desc){ return m_config_from_obj_desc(talloc_ctx, log, NULL, desc);}
static const struct m_config_group *find_group(struct mpv_global *global, const struct m_option *cfg){ struct m_config_shadow *shadow = global->config;
for (int n = 0; n < shadow->num_groups; n++) { if (shadow->groups[n].group->opts == cfg) return &shadow->groups[n]; }
return NULL;}
void *m_config_group_from_desc(void *ta_parent, struct mp_log *log, struct mpv_global *global, struct m_obj_desc *desc, const char *name){ const struct m_config_group *group = find_group(global, desc->options); if (group) { return mp_get_config_group(ta_parent, global, group->group); } else { void *d = talloc_zero_size(ta_parent, desc->priv_size); if (desc->priv_defaults) memcpy(d, desc->priv_defaults, desc->priv_size); return d; }}
static int m_config_set_obj_params(struct m_config *config, struct mp_log *log, struct mpv_global *global, struct m_obj_desc *desc, char **args){ for (int n = 0; args && args[n * 2 + 0]; n++) { bstr opt = bstr0(args[n * 2 + 0]); bstr val = bstr0(args[n * 2 + 1]); if (m_config_set_option_cli(config, opt, val, 0) < 0) return -1; }
return 0;}
struct m_config *m_config_from_obj_desc_and_args(void *ta_parent, struct mp_log *log, struct mpv_global *global, struct m_obj_desc *desc, const char *name, struct m_obj_settings *defaults, char **args){ struct m_config *config = m_config_from_obj_desc(ta_parent, log, global, desc);
for (int n = 0; defaults && defaults[n].name; n++) { struct m_obj_settings *entry = &defaults[n]; if (name && strcmp(entry->name, name) == 0) { if (m_config_set_obj_params(config, log, global, desc, entry->attribs) < 0) goto error; } }
if (m_config_set_obj_params(config, log, global, desc, args) < 0) goto error;
return config;error: talloc_free(config); return NULL;}
static void ensure_backup(struct m_config *config, struct m_config_option *co){ if (!co->data) return; for (struct m_opt_backup *cur = config->backup_opts; cur; cur = cur->next) { if (cur->co->data == co->data) // comparing data ptr catches aliases return; } struct m_opt_backup *bc = talloc_ptrtype(NULL, bc); *bc = (struct m_opt_backup) { .co = co, .backup = talloc_zero_size(bc, co->opt->type->size), }; m_option_copy(co->opt, bc->backup, co->data); bc->next = config->backup_opts; config->backup_opts = bc; co->is_set_locally = true;}
void m_config_restore_backups(struct m_config *config){ while (config->backup_opts) { struct m_opt_backup *bc = config->backup_opts; config->backup_opts = bc->next;
m_config_set_option_raw(config, bc->co, bc->backup, 0);
m_option_free(bc->co->opt, bc->backup); bc->co->is_set_locally = false; talloc_free(bc); }}
void m_config_backup_opt(struct m_config *config, const char *opt){ struct m_config_option *co = m_config_get_co(config, bstr0(opt)); if (co) { ensure_backup(config, co); } else { MP_ERR(config, "Option %s not found.\n", opt); }}
void m_config_backup_all_opts(struct m_config *config){ for (int n = 0; n < config->num_opts; n++) ensure_backup(config, &config->opts[n]);}
static void init_obj_settings_list(struct m_config_shadow *shadow, int parent_group_index, const struct m_obj_list *list){ struct m_obj_desc desc; for (int n = 0; ; n++) { if (!list->get_desc(&desc, n)) break; if (desc.global_opts) { add_sub_group(shadow, NULL, parent_group_index, -1, desc.global_opts); } if (list->use_global_options && desc.options) { struct m_sub_options *conf = talloc_ptrtype(shadow, conf); *conf = (struct m_sub_options){ .prefix = desc.options_prefix, .opts = desc.options, .defaults = desc.priv_defaults, .size = desc.priv_size, }; add_sub_group(shadow, NULL, parent_group_index, -1, conf); } }}
static void add_sub_group(struct m_config_shadow *shadow, const char *name_prefix, int parent_group_index, int parent_ptr, const struct m_sub_options *subopts){ // Can't be used multiple times. for (int n = 0; n < shadow->num_groups; n++) assert(shadow->groups[n].group != subopts);
if (!name_prefix) name_prefix = ""; if (subopts->prefix && subopts->prefix[0]) { assert(!name_prefix[0]); name_prefix = subopts->prefix; }
// You can only use UPDATE_ flags here. assert(!(subopts->change_flags & ~(unsigned)UPDATE_OPTS_MASK));
assert(parent_group_index >= -1 && parent_group_index < shadow->num_groups);
int group_index = shadow->num_groups++; MP_TARRAY_GROW(shadow, shadow->groups, group_index); shadow->groups[group_index] = (struct m_config_group){ .group = subopts, .parent_group = parent_group_index, .parent_ptr = parent_ptr, .prefix = name_prefix, };
for (int i = 0; subopts->opts && subopts->opts[i].name; i++) { const struct m_option *opt = &subopts->opts[i];
if (opt->type == &m_option_type_subconfig) { const struct m_sub_options *new_subopts = opt->priv;
// Providing default structs in-place is not allowed. if (opt->offset >= 0 && subopts->defaults) { void *ptr = (char *)subopts->defaults + opt->offset; assert(!substruct_read_ptr(ptr)); }
const char *prefix = concat_name(shadow, name_prefix, opt->name); add_sub_group(shadow, prefix, group_index, opt->offset, new_subopts);
} else if (opt->type == &m_option_type_obj_settings_list) { const struct m_obj_list *objlist = opt->priv; init_obj_settings_list(shadow, group_index, objlist); } }
if (subopts->get_sub_options) { for (int i = 0; ; i++) { const struct m_sub_options *sub = NULL; if (!subopts->get_sub_options(i, &sub)) break; if (sub) add_sub_group(shadow, NULL, group_index, -1, sub); } }
shadow->groups[group_index].group_count = shadow->num_groups - group_index;}
static uint64_t get_option_change_mask(struct m_config_shadow *shadow, int group_index, int group_root, const struct m_option *opt){ uint64_t changed = opt->flags & UPDATE_OPTS_MASK; while (group_index != group_root) { struct m_config_group *g = &shadow->groups[group_index]; changed |= g->group->change_flags; group_index = g->parent_group; } return changed;}
struct m_config_option *m_config_get_co_raw(const struct m_config *config, struct bstr name){ if (!name.len) return NULL;
for (int n = 0; n < config->num_opts; n++) { struct m_config_option *co = &config->opts[n]; struct bstr coname = bstr0(co->name); if (bstrcmp(coname, name) == 0) return co; }
return NULL;}
// Like m_config_get_co_raw(), but resolve aliases.static struct m_config_option *m_config_get_co_any(const struct m_config *config, struct bstr name){ struct m_config_option *co = m_config_get_co_raw(config, name); if (!co) return NULL;
const char *prefix = config->is_toplevel ? "--" : ""; if (co->opt->type == &m_option_type_alias) { const char *alias = (const char *)co->opt->priv; if (co->opt->deprecation_message && !co->warning_was_printed) { if (co->opt->deprecation_message[0]) { MP_WARN(config, "Warning: option %s%s was replaced with " "%s%s: %s\n", prefix, co->name, prefix, alias, co->opt->deprecation_message); } else { MP_WARN(config, "Warning: option %s%s was replaced with " "%s%s and might be removed in the future.\n", prefix, co->name, prefix, alias); } co->warning_was_printed = true; } return m_config_get_co_any(config, bstr0(alias)); } else if (co->opt->type == &m_option_type_removed) { if (!co->warning_was_printed) { char *msg = co->opt->priv; if (msg) { MP_FATAL(config, "Option %s%s was removed: %s\n", prefix, co->name, msg); } else { MP_FATAL(config, "Option %s%s was removed.\n", prefix, co->name); } co->warning_was_printed = true; } return NULL; } else if (co->opt->deprecation_message) { if (!co->warning_was_printed) { MP_WARN(config, "Warning: option %s%s is deprecated " "and might be removed in the future (%s).\n", prefix, co->name, co->opt->deprecation_message); co->warning_was_printed = true; } } return co;}
struct m_config_option *m_config_get_co(const struct m_config *config, struct bstr name){ struct m_config_option *co = m_config_get_co_any(config, name); // CLI aliases should not be real options, and are explicitly handled by // m_config_set_option_cli(). So pretend it does not exist. if (co && co->opt->type == &m_option_type_cli_alias) co = NULL; return co;}
int m_config_get_co_count(struct m_config *config){ return config->num_opts;}
struct m_config_option *m_config_get_co_index(struct m_config *config, int index){ return &config->opts[index];}
const void *m_config_get_co_default(const struct m_config *config, struct m_config_option *co){ if (co->opt->defval) return co->opt->defval;
const struct m_sub_options *subopt = config->shadow->groups[co->group_index].group;
if (co->opt->offset >= 0 && subopt->defaults) return (char *)subopt->defaults + co->opt->offset;
return NULL;}
const char *m_config_get_positional_option(const struct m_config *config, int p){ int pos = 0; for (int n = 0; n < config->num_opts; n++) { struct m_config_option *co = &config->opts[n]; if (!co->opt->deprecation_message) { if (pos == p) return co->name; pos++; } } return NULL;}
// return: <0: M_OPT_ error, 0: skip, 1: check, 2: setstatic int handle_set_opt_flags(struct m_config *config, struct m_config_option *co, int flags){ int optflags = co->opt->flags; bool set = !(flags & M_SETOPT_CHECK_ONLY);
if ((flags & M_SETOPT_PRE_PARSE_ONLY) && !(optflags & M_OPT_PRE_PARSE)) return 0;
if ((flags & M_SETOPT_PRESERVE_CMDLINE) && co->is_set_from_cmdline) set = false;
if ((flags & M_SETOPT_NO_OVERWRITE) && (co->is_set_from_cmdline || co->is_set_from_config)) set = false;
if ((flags & M_SETOPT_NO_PRE_PARSE) && (optflags & M_OPT_PRE_PARSE)) return M_OPT_INVALID;
// Check if this option isn't forbidden in the current mode if ((flags & M_SETOPT_FROM_CONFIG_FILE) && (optflags & M_OPT_NOCFG)) { MP_ERR(config, "The %s option can't be used in a config file.\n", co->name); return M_OPT_INVALID; } if ((flags & M_SETOPT_BACKUP) && set) ensure_backup(config, co);
return set ? 2 : 1;}
void m_config_mark_co_flags(struct m_config_option *co, int flags){ if (flags & M_SETOPT_FROM_CMDLINE) co->is_set_from_cmdline = true;
if (flags & M_SETOPT_FROM_CONFIG_FILE) co->is_set_from_config = true;}
// Special options that don't really fit into the option handling model. They// usually store no data, but trigger actions. Caller is assumed to have called// handle_set_opt_flags() to make sure the option can be set.// Returns M_OPT_UNKNOWN if the option is not a special option.static int m_config_handle_special_options(struct m_config *config, struct m_config_option *co, void *data, int flags){ if (config->use_profiles && strcmp(co->name, "profile") == 0) { char **list = *(char ***)data;
if (list && list[0] && !list[1] && strcmp(list[0], "help") == 0) { if (!config->profiles) { MP_INFO(config, "No profiles have been defined.\n"); return M_OPT_EXIT; } list_profiles(config); return M_OPT_EXIT; }
for (int n = 0; list && list[n]; n++) { int r = m_config_set_profile(config, list[n], flags); if (r < 0) return r; } return 0; }
if (config->includefunc && strcmp(co->name, "include") == 0) { char *param = *(char **)data; if (!param || !param[0]) return M_OPT_MISSING_PARAM; if (config->recursion_depth >= MAX_RECURSION_DEPTH) { MP_ERR(config, "Maximum 'include' nesting depth exceeded.\n"); return M_OPT_INVALID; } config->recursion_depth += 1; config->includefunc(config->includefunc_ctx, param, flags); config->recursion_depth -= 1; if (config->recursion_depth == 0 && config->profile_depth == 0) m_config_finish_default_profile(config, flags); return 1; }
if (config->use_profiles && strcmp(co->name, "show-profile") == 0) return show_profile(config, bstr0(*(char **)data));
if (config->is_toplevel && (strcmp(co->name, "h") == 0 || strcmp(co->name, "help") == 0)) { char *h = *(char **)data; mp_info(config->log, "%s", mp_help_text); if (h && h[0]) m_config_print_option_list(config, h); return M_OPT_EXIT; }
if (strcmp(co->name, "list-options") == 0) { m_config_print_option_list(config, "*"); return M_OPT_EXIT; }
return M_OPT_UNKNOWN;}
// This notification happens when anyone other than m_config->cache (i.e. not// through m_config_set_option_raw() or related) changes any options.static void async_change_cb(void *p){ struct m_config *config = p;
void *ptr; while (m_config_cache_get_next_changed(config->cache, &ptr)) { // Regrettable linear search, might degenerate to quadratic. for (int n = 0; n < config->num_opts; n++) { struct m_config_option *co = &config->opts[n]; if (co->data == ptr) { if (config->option_change_callback) { config->option_change_callback( config->option_change_callback_ctx, co, config->cache->change_flags, false); } break; } } config->cache->change_flags = 0; }}
void m_config_set_update_dispatch_queue(struct m_config *config, struct mp_dispatch_queue *dispatch){ m_config_cache_set_dispatch_change_cb(config->cache, dispatch, async_change_cb, config);}
// Normally m_config_cache will not send notifications when _we_ change our// own stuff. For whatever funny reasons, we need that, though.static void force_self_notify_change_opt(struct m_config *config, struct m_config_option *co, bool self_notification){ int changed = get_option_change_mask(config->shadow, co->group_index, 0, co->opt);
if (config->option_change_callback) { config->option_change_callback(config->option_change_callback_ctx, co, changed, self_notification); }}
static void notify_opt(struct m_config *config, void *ptr, bool self_notification){ for (int n = 0; n < config->num_opts; n++) { struct m_config_option *co = &config->opts[n]; if (co->data == ptr) { if (m_config_cache_write_opt(config->cache, co->data)) force_self_notify_change_opt(config, co, self_notification); return; } } // ptr doesn't point to any config->optstruct field declared in the // option list? assert(false);}
void m_config_notify_change_opt_ptr(struct m_config *config, void *ptr){ notify_opt(config, ptr, true);}
void m_config_notify_change_opt_ptr_notify(struct m_config *config, void *ptr){ // (the notify bool is inverted: by not marking it as self-notification, // the mpctx option change handler actually applies it) notify_opt(config, ptr, false);}
int m_config_set_option_raw(struct m_config *config, struct m_config_option *co, void *data, int flags){ if (!co) return M_OPT_UNKNOWN;
int r = handle_set_opt_flags(config, co, flags); if (r <= 1) return r;
r = m_config_handle_special_options(config, co, data, flags); if (r != M_OPT_UNKNOWN) return r;
// This affects some special options like "playlist", "v". Maybe these // should work, or maybe not. For now they would require special code. if (!co->data) return flags & M_SETOPT_FROM_CMDLINE ? 0 : M_OPT_UNKNOWN;
m_config_mark_co_flags(co, flags);
m_option_copy(co->opt, co->data, data); if (m_config_cache_write_opt(config->cache, co->data)) force_self_notify_change_opt(config, co, false);
return 0;}
// Handle CLI exceptions to option handling.// Used to turn "--no-foo" into "--foo=no".// It also handles looking up "--vf-add" as "--vf".static struct m_config_option *m_config_mogrify_cli_opt(struct m_config *config, struct bstr *name, bool *out_negate, int *out_add_flags){ *out_negate = false; *out_add_flags = 0;
struct m_config_option *co = m_config_get_co(config, *name); if (co) return co;
// Turn "--no-foo" into "foo" + set *out_negate. bstr no_name = *name; if (!co && bstr_eatstart0(&no_name, "no-")) { co = m_config_get_co(config, no_name);
// Not all choice types have this value - if they don't, then parsing // them will simply result in an error. Good enough. if (!co || !(co->opt->type->flags & M_OPT_TYPE_CHOICE)) return NULL;
*name = no_name; *out_negate = true; return co; }
// Resolve CLI alias. (We don't allow you to combine them with "--no-".) co = m_config_get_co_any(config, *name); if (co && co->opt->type == &m_option_type_cli_alias) *name = bstr0((char *)co->opt->priv);
// Might be a suffix "action", like "--vf-add". Expensively check for // matches. (We don't allow you to combine them with "--no-".) for (int n = 0; n < config->num_opts; n++) { co = &config->opts[n]; struct bstr basename = bstr0(co->name);
if (!bstr_startswith(*name, basename)) continue;
// Aliased option + a suffix action, e.g. --opengl-shaders-append if (co->opt->type == &m_option_type_alias) co = m_config_get_co_any(config, basename); if (!co) continue;
const struct m_option_type *type = co->opt->type; for (int i = 0; type->actions && type->actions[i].name; i++) { const struct m_option_action *action = &type->actions[i]; bstr suffix = bstr0(action->name);
if (bstr_endswith(*name, suffix) && (name->len == basename.len + 1 + suffix.len) && name->start[basename.len] == '-') { *out_add_flags = action->flags; return co; } } }
return NULL;}
int m_config_set_option_cli(struct m_config *config, struct bstr name, struct bstr param, int flags){ int r; assert(config != NULL);
bool negate; struct m_config_option *co = m_config_mogrify_cli_opt(config, &name, &negate, &(int){0});
if (!co) { r = M_OPT_UNKNOWN; goto done; }
if (negate) { if (param.len) { r = M_OPT_DISALLOW_PARAM; goto done; }
param = bstr0("no"); }
// This is the only mandatory function assert(co->opt->type->parse);
r = handle_set_opt_flags(config, co, flags); if (r <= 0) goto done;
if (r == 2) { MP_VERBOSE(config, "Setting option '%.*s' = '%.*s' (flags = %d)\n", BSTR_P(name), BSTR_P(param), flags); }
union m_option_value val = {0};
// Some option types are "impure" and work on the existing data. // (Prime examples: --vf-add, --sub-file) if (co->data) m_option_copy(co->opt, &val, co->data);
r = m_option_parse(config->log, co->opt, name, param, &val);
if (r >= 0) r = m_config_set_option_raw(config, co, &val, flags);
m_option_free(co->opt, &val);
done: if (r < 0 && r != M_OPT_EXIT) { MP_ERR(config, "Error parsing option %.*s (%s)\n", BSTR_P(name), m_option_strerror(r)); r = M_OPT_INVALID; } return r;}
int m_config_set_option_node(struct m_config *config, bstr name, struct mpv_node *data, int flags){ int r;
struct m_config_option *co = m_config_get_co(config, name); if (!co) return M_OPT_UNKNOWN;
// Do this on an "empty" type to make setting the option strictly overwrite // the old value, as opposed to e.g. appending to lists. union m_option_value val = {0};
if (data->format == MPV_FORMAT_STRING) { bstr param = bstr0(data->u.string); r = m_option_parse(mp_null_log, co->opt, name, param, &val); } else { r = m_option_set_node(co->opt, &val, data); }
if (r >= 0) r = m_config_set_option_raw(config, co, &val, flags);
if (mp_msg_test(config->log, MSGL_V)) { char *s = m_option_type_node.print(NULL, data); MP_DBG(config, "Setting option '%.*s' = %s (flags = %d) -> %d\n", BSTR_P(name), s ? s : "?", flags, r); talloc_free(s); }
m_option_free(co->opt, &val); return r;}
int m_config_option_requires_param(struct m_config *config, bstr name){ bool negate; int flags; struct m_config_option *co = m_config_mogrify_cli_opt(config, &name, &negate, &flags);
if (!co) return M_OPT_UNKNOWN;
if (negate || (flags & M_OPT_TYPE_OPTIONAL_PARAM)) return 0;
return m_option_required_params(co->opt);}
static int sort_opt_compare(const void *pa, const void *pb){ const struct m_config_option *a = pa; const struct m_config_option *b = pb; return strcasecmp(a->name, b->name);}
void m_config_print_option_list(const struct m_config *config, const char *name){ char min[50], max[50]; int count = 0; const char *prefix = config->is_toplevel ? "--" : "";
struct m_config_option *sorted = talloc_memdup(NULL, config->opts, config->num_opts * sizeof(sorted[0])); if (config->is_toplevel) qsort(sorted, config->num_opts, sizeof(sorted[0]), sort_opt_compare);
MP_INFO(config, "Options:\n\n"); for (int i = 0; i < config->num_opts; i++) { struct m_config_option *co = &sorted[i]; const struct m_option *opt = co->opt; if (strcmp(name, "*") != 0 && !strstr(co->name, name)) continue; MP_INFO(config, " %s%-30s", prefix, co->name); if (opt->type == &m_option_type_choice) { MP_INFO(config, " Choices:"); struct m_opt_choice_alternatives *alt = opt->priv; for (int n = 0; alt[n].name; n++) MP_INFO(config, " %s", alt[n].name); if (opt->flags & (M_OPT_MIN | M_OPT_MAX)) MP_INFO(config, " (or an integer)"); } else { MP_INFO(config, " %s", opt->type->name); } if (opt->flags & (M_OPT_MIN | M_OPT_MAX)) { snprintf(min, sizeof(min), "any"); snprintf(max, sizeof(max), "any"); if (opt->flags & M_OPT_MIN) snprintf(min, sizeof(min), "%.14g", opt->min); if (opt->flags & M_OPT_MAX) snprintf(max, sizeof(max), "%.14g", opt->max); MP_INFO(config, " (%s to %s)", min, max); } char *def = NULL; const void *defptr = m_config_get_co_default(config, co); if (!defptr) defptr = &default_value; if (defptr) def = m_option_pretty_print(opt, defptr); if (def) { MP_INFO(config, " (default: %s)", def); talloc_free(def); } if (opt->flags & M_OPT_NOCFG) MP_INFO(config, " [not in config files]"); if (opt->flags & M_OPT_FILE) MP_INFO(config, " [file]"); if (opt->deprecation_message) MP_INFO(config, " [deprecated]"); if (opt->type == &m_option_type_alias) MP_INFO(config, " for %s", (char *)opt->priv); if (opt->type == &m_option_type_cli_alias) MP_INFO(config, " for --%s (CLI/config files only)", (char *)opt->priv); MP_INFO(config, "\n"); for (int n = 0; opt->type->actions && opt->type->actions[n].name; n++) { const struct m_option_action *action = &opt->type->actions[n]; MP_INFO(config, " %s%s-%s\n", prefix, co->name, action->name); count++; } count++; } MP_INFO(config, "\nTotal: %d options\n", count); talloc_free(sorted);}
char **m_config_list_options(void *ta_parent, const struct m_config *config){ char **list = talloc_new(ta_parent); int count = 0; for (int i = 0; i < config->num_opts; i++) { struct m_config_option *co = &config->opts[i]; // For use with CONF_TYPE_STRING_LIST, it's important not to set list // as allocation parent. char *s = talloc_strdup(ta_parent, co->name); MP_TARRAY_APPEND(ta_parent, list, count, s); } MP_TARRAY_APPEND(ta_parent, list, count, NULL); return list;}
struct m_profile *m_config_get_profile(const struct m_config *config, bstr name){ for (struct m_profile *p = config->profiles; p; p = p->next) { if (bstr_equals0(name, p->name)) return p; } return NULL;}
struct m_profile *m_config_get_profile0(const struct m_config *config, char *name){ return m_config_get_profile(config, bstr0(name));}
struct m_profile *m_config_add_profile(struct m_config *config, char *name){ if (!name || !name[0]) name = "default"; struct m_profile *p = m_config_get_profile0(config, name); if (p) return p; p = talloc_zero(config, struct m_profile); p->name = talloc_strdup(p, name); p->next = config->profiles; config->profiles = p; return p;}
void m_profile_set_desc(struct m_profile *p, bstr desc){ talloc_free(p->desc); p->desc = bstrto0(p, desc);}
int m_config_set_profile_option(struct m_config *config, struct m_profile *p, bstr name, bstr val){ int i = m_config_set_option_cli(config, name, val, M_SETOPT_CHECK_ONLY | M_SETOPT_FROM_CONFIG_FILE); if (i < 0) return i; p->opts = talloc_realloc(p, p->opts, char *, 2 * (p->num_opts + 2)); p->opts[p->num_opts * 2] = bstrto0(p, name); p->opts[p->num_opts * 2 + 1] = bstrto0(p, val); p->num_opts++; p->opts[p->num_opts * 2] = p->opts[p->num_opts * 2 + 1] = NULL; return 1;}
int m_config_set_profile(struct m_config *config, char *name, int flags){ struct m_profile *p = m_config_get_profile0(config, name); if (!p) { MP_WARN(config, "Unknown profile '%s'.\n", name); return M_OPT_INVALID; } MP_VERBOSE(config, "Applying profile '%s'...\n", name);
if (config->profile_depth > MAX_PROFILE_DEPTH) { MP_WARN(config, "WARNING: Profile inclusion too deep.\n"); return M_OPT_INVALID; } config->profile_depth++; for (int i = 0; i < p->num_opts; i++) { m_config_set_option_cli(config, bstr0(p->opts[2 * i]), bstr0(p->opts[2 * i + 1]), flags | M_SETOPT_FROM_CONFIG_FILE); } config->profile_depth--;
return 0;}
void m_config_finish_default_profile(struct m_config *config, int flags){ struct m_profile *p = m_config_add_profile(config, NULL); m_config_set_profile(config, p->name, flags); p->num_opts = 0;}
struct mpv_node m_config_get_profiles(struct m_config *config){ struct mpv_node root; node_init(&root, MPV_FORMAT_NODE_ARRAY, NULL);
for (m_profile_t *profile = config->profiles; profile; profile = profile->next) { struct mpv_node *entry = node_array_add(&root, MPV_FORMAT_NODE_MAP);
node_map_add_string(entry, "name", profile->name); if (profile->desc) node_map_add_string(entry, "profile-desc", profile->desc);
struct mpv_node *opts = node_map_add(entry, "options", MPV_FORMAT_NODE_ARRAY);
for (int n = 0; n < profile->num_opts; n++) { struct mpv_node *opt_entry = node_array_add(opts, MPV_FORMAT_NODE_MAP); node_map_add_string(opt_entry, "key", profile->opts[n * 2 + 0]); node_map_add_string(opt_entry, "value", profile->opts[n * 2 + 1]); } }
return root;}
static void cache_destroy(void *p){ struct m_config_cache *cache = p;
// (technically speaking, being able to call them both without anything // breaking is a feature provided by these functions) m_config_cache_set_wakeup_cb(cache, NULL, NULL); m_config_cache_set_dispatch_change_cb(cache, NULL, NULL, NULL);}
static struct m_config_cache *m_config_cache_alloc_internal(void *ta_parent, struct m_config_shadow *shadow, const struct m_sub_options *group){ int group_index = -1;
for (int n = 0; n < shadow->num_groups; n++) { if (shadow->groups[n].group == group) { group_index = n; break; } }
assert(group_index >= 0); // invalid group (or not in option tree)
struct cache_alloc { struct m_config_cache a; struct config_cache b; }; struct cache_alloc *alloc = talloc_zero(ta_parent, struct cache_alloc); assert((void *)&alloc->a == (void *)alloc); struct m_config_cache *cache = &alloc->a; talloc_set_destructor(cache, cache_destroy); cache->internal = &alloc->b;
struct config_cache *in = cache->internal; in->shadow = shadow; in->src = shadow->data;
pthread_mutex_lock(&shadow->lock); in->data = allocate_option_data(cache, shadow, group_index, in->src); pthread_mutex_unlock(&shadow->lock);
cache->opts = in->data->gdata[0].udata;
in->upd_group = -1;
return cache;}
struct m_config_cache *m_config_cache_alloc(void *ta_parent, struct mpv_global *global, const struct m_sub_options *group){ return m_config_cache_alloc_internal(ta_parent, global->config, group);}
static void update_next_option(struct m_config_cache *cache, void **p_opt){ struct config_cache *in = cache->internal; struct m_config_data *dst = in->data; struct m_config_data *src = in->src;
assert(src->group_index == 0); // must be the option root currently
*p_opt = NULL;
while (in->upd_group < dst->group_index + dst->num_gdata) { struct m_group_data *gsrc = m_config_gdata(src, in->upd_group); struct m_group_data *gdst = m_config_gdata(dst, in->upd_group); assert(gsrc && gdst);
if (gdst->ts < gsrc->ts) { struct m_config_group *g = &dst->shadow->groups[in->upd_group]; const struct m_option *opts = g->group->opts;
while (opts && opts[in->upd_opt].name) { const struct m_option *opt = &opts[in->upd_opt];
if (opt->offset >= 0 && opt->type->size) { void *dsrc = gsrc->udata + opt->offset; void *ddst = gdst->udata + opt->offset;
if (!m_option_equal(opt, ddst, dsrc)) { uint64_t ch = get_option_change_mask(dst->shadow, in->upd_group, dst->group_index, opt);
if (cache->debug) { char *vdst = m_option_print(opt, ddst); char *vsrc = m_option_print(opt, dsrc); mp_warn(cache->debug, "Option '%s' changed from " "'%s' to' %s' (flags = 0x%"PRIx64")\n", opt->name, vdst, vsrc, ch); talloc_free(vdst); talloc_free(vsrc); }
m_option_copy(opt, ddst, dsrc); cache->change_flags |= ch;
in->upd_opt++; // skip this next time *p_opt = ddst; return; } }
in->upd_opt++; }
gdst->ts = gsrc->ts; }
in->upd_group++; in->upd_opt = 0; }
in->upd_group = -1;}
static bool cache_check_update(struct m_config_cache *cache){ struct config_cache *in = cache->internal; struct m_config_shadow *shadow = in->shadow;
// Using atomics and checking outside of the lock - it's unknown whether // this makes it faster or slower. Just cargo culting it. uint64_t new_ts = atomic_load(&shadow->ts); if (in->ts >= new_ts) return false;
in->ts = new_ts; in->upd_group = in->data->group_index; in->upd_opt = 0; return true;}
bool m_config_cache_update(struct m_config_cache *cache){ struct config_cache *in = cache->internal; struct m_config_shadow *shadow = in->shadow;
if (!cache_check_update(cache)) return false;
pthread_mutex_lock(&shadow->lock); bool res = false; while (1) { void *p; update_next_option(cache, &p); if (!p) break; res = true; } pthread_mutex_unlock(&shadow->lock); return res;}
bool m_config_cache_get_next_changed(struct m_config_cache *cache, void **opt){ struct config_cache *in = cache->internal; struct m_config_shadow *shadow = in->shadow;
*opt = NULL; if (!cache_check_update(cache) && in->upd_group < 0) return false;
pthread_mutex_lock(&shadow->lock); update_next_option(cache, opt); pthread_mutex_unlock(&shadow->lock); return !!*opt;}
static void find_opt(struct m_config_shadow *shadow, struct m_config_data *data, void *ptr, int *group_idx, int *opt_idx){ *group_idx = -1; *opt_idx = -1;
for (int n = data->group_index; n < data->group_index + data->num_gdata; n++) { struct m_group_data *gd = m_config_gdata(data, n); struct m_config_group *g = &shadow->groups[n]; const struct m_option *opts = g->group->opts;
for (int i = 0; opts && opts[i].name; i++) { const struct m_option *opt = &opts[i];
if (opt->offset >= 0 && opt->type->size && ptr == gd->udata + opt->offset) { *group_idx = n; *opt_idx = i; return; } } }}
bool m_config_cache_write_opt(struct m_config_cache *cache, void *ptr){ struct config_cache *in = cache->internal; struct m_config_shadow *shadow = in->shadow;
int group_idx = -1; int opt_idx = -1; find_opt(shadow, in->data, ptr, &group_idx, &opt_idx);
// ptr was not in cache->opts, or no option declaration matching it. assert(group_idx >= 0);
struct m_config_group *g = &shadow->groups[group_idx]; const struct m_option *opt = &g->group->opts[opt_idx];
pthread_mutex_lock(&shadow->lock);
struct m_group_data *gdst = m_config_gdata(in->data, group_idx); struct m_group_data *gsrc = m_config_gdata(in->src, group_idx); assert(gdst && gsrc);
bool changed = !m_option_equal(opt, gsrc->udata + opt->offset, ptr); if (changed) { m_option_copy(opt, gsrc->udata + opt->offset, ptr);
gsrc->ts = atomic_fetch_add(&shadow->ts, 1) + 1;
for (int n = 0; n < shadow->num_listeners; n++) { struct config_cache *listener = shadow->listeners[n]; if (listener->wakeup_cb && m_config_gdata(listener->data, group_idx)) listener->wakeup_cb(listener->wakeup_cb_ctx); } }
pthread_mutex_unlock(&shadow->lock);
return changed;}
void m_config_cache_set_wakeup_cb(struct m_config_cache *cache, void (*cb)(void *ctx), void *cb_ctx){ struct config_cache *in = cache->internal; struct m_config_shadow *shadow = in->shadow;
pthread_mutex_lock(&shadow->lock); if (in->in_list) { for (int n = 0; n < shadow->num_listeners; n++) { if (shadow->listeners[n] == in) { MP_TARRAY_REMOVE_AT(shadow->listeners, shadow->num_listeners, n); break; } } for (int n = 0; n < shadow->num_listeners; n++) assert(shadow->listeners[n] != in); // only 1 wakeup_cb per cache // (The deinitialization path relies on this to free all memory.) if (!shadow->num_listeners) { talloc_free(shadow->listeners); shadow->listeners = NULL; } } if (cb) { MP_TARRAY_APPEND(NULL, shadow->listeners, shadow->num_listeners, in); in->in_list = true; in->wakeup_cb = cb; in->wakeup_cb_ctx = cb_ctx; } pthread_mutex_unlock(&shadow->lock);}
static void dispatch_notify(void *p){ struct config_cache *in = p;
assert(in->wakeup_dispatch_queue); mp_dispatch_enqueue_notify(in->wakeup_dispatch_queue, in->wakeup_dispatch_cb, in->wakeup_dispatch_cb_ctx);}
void m_config_cache_set_dispatch_change_cb(struct m_config_cache *cache, struct mp_dispatch_queue *dispatch, void (*cb)(void *ctx), void *cb_ctx){ struct config_cache *in = cache->internal;
// Removing the old one is tricky. First make sure no new notifications will // come. m_config_cache_set_wakeup_cb(cache, NULL, NULL); // Remove any pending notifications (assume we're on the same thread as // any potential mp_dispatch_queue_process() callers). if (in->wakeup_dispatch_queue) { mp_dispatch_cancel_fn(in->wakeup_dispatch_queue, in->wakeup_dispatch_cb, in->wakeup_dispatch_cb_ctx); }
in->wakeup_dispatch_queue = NULL; in->wakeup_dispatch_cb = NULL; in->wakeup_dispatch_cb_ctx = NULL;
if (cb) { in->wakeup_dispatch_queue = dispatch; in->wakeup_dispatch_cb = cb; in->wakeup_dispatch_cb_ctx = cb_ctx; m_config_cache_set_wakeup_cb(cache, dispatch_notify, in); }}
void *mp_get_config_group(void *ta_parent, struct mpv_global *global, const struct m_sub_options *group){ struct m_config_cache *cache = m_config_cache_alloc(NULL, global, group); // Make talloc_free(cache->opts) free the entire cache. ta_set_parent(cache->opts, ta_parent); ta_set_parent(cache, cache->opts); return cache->opts;}
void mp_read_option_raw(struct mpv_global *global, const char *name, const struct m_option_type *type, void *dst){ struct m_config_shadow *shadow = global->config;
struct opt_iterate_state it; opt_iterate_init(&it, shadow, 0); while (opt_iterate_next(&it)) { if (strcmp(name, it.full_name) == 0) { struct m_group_data *gdata = m_config_gdata(shadow->data, it.group_index); assert(gdata);
assert(it.opt->offset >= 0); assert(it.opt->type == type);
memset(dst, 0, it.opt->type->size); m_option_copy(it.opt, dst, gdata->udata + it.opt->offset); return; } }
assert(0); // not found}