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m_config: add some convenience functions

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To be used by the following commits.
This commit is contained in:
wm4 2016-09-02 15:58:15 +02:00
parent 2c917219cf
commit 72c6bf1345
2 changed files with 35 additions and 0 deletions
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21
options/m_config.c
View File

@ -1143,6 +1143,27 @@ void m_config_notify_change_co(struct m_config *config,
mp_msg_update_msglevels(config->global);
}
void *mp_get_config_group(void *ta_parent, struct mpv_global *global,
const struct m_sub_options *group)
{
assert(ta_parent); // without you'd necessarily leak memory
struct m_config_cache *cache = m_config_cache_alloc(ta_parent, global, group);
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 m_config_option *co = m_config_get_co(shadow->root, bstr0(name));
assert(co);
assert(co->shadow_offset >= 0);
assert(co->opt->type == type);
memset(dst, 0, co->opt->type->size);
m_option_copy(co->opt, dst, shadow->data + co->shadow_offset);
}
struct m_config *mp_get_root_config(struct mpv_global *global)
{
return global->config->root;

14
options/m_config.h
View File

@ -304,6 +304,20 @@ struct m_config_cache *m_config_cache_alloc(void *ta_parent,
// data itself will (e.g. string options might be reallocated).
bool m_config_cache_update(struct m_config_cache *cache);
// Like m_config_cache_alloc(), but return the struct (m_config_cache->opts)
// directly, with no way to update the config.
// Warning: does currently not set the child as its own talloc root, which
// means the only way to free the struct is by freeing ta_parent.
void *mp_get_config_group(void *ta_parent, struct mpv_global *global,
const struct m_sub_options *group);
// Read a single global option in a thread-safe way. For multiple options,
// use m_config_cache. The option must exist and match the provided type (the
// type is used as a sanity check only). Performs semi-expensive lookup.
void mp_read_option_raw(struct mpv_global *global, const char *name,
const struct m_option_type *type, void *dst);
struct m_config *mp_get_root_config(struct mpv_global *global);
#endif /* MPLAYER_M_CONFIG_H */