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-rw-r--r--options/m_property.h28
1 files changed, 27 insertions, 1 deletions
diff --git a/options/m_property.h b/options/m_property.h
index ae4b7716b6..cb9f8b5a25 100644
--- a/options/m_property.h
+++ b/options/m_property.h
@@ -22,7 +22,8 @@
#include <stdbool.h>
#include <stdint.h>
-struct m_option;
+#include "m_option.h"
+
struct mp_log;
extern const struct m_option_type m_option_type_dummy;
@@ -141,4 +142,29 @@ int m_property_double_ro(const struct m_option* prop, int action, void* arg,
int m_property_strdup_ro(const struct m_option* prop, int action, void* arg,
const char *var);
+struct m_sub_property {
+ // Name of the sub-property - this will be prefixed with the parent
+ // property's name.
+ const char *name;
+ // Type of the data stored in the value member. See m_option.
+ const struct m_option_type *type;
+ // Data returned by the sub-property. m_property_read_sub() will make a
+ // copy of this if needed. It will never write or free the data.
+ union m_option_value value;
+ // This can be set to true if the property should be hidden.
+ bool unavailable;
+};
+
+// Convenience macros which can be used as part of a sub_property entry.
+#define SUB_PROP_INT(i) \
+ .type = CONF_TYPE_INT, .value = {.int_ = (i)}
+#define SUB_PROP_STR(s) \
+ .type = CONF_TYPE_STRING, .value = {.string = (char *)(s)}
+#define SUB_PROP_FLOAT(f) \
+ .type = CONF_TYPE_FLOAT, .value = {.float_ = (f)}
+#define SUB_PROP_FLAG(f) \
+ .type = CONF_TYPE_FLAG, .value = {.flag = (f)}
+
+int m_property_read_sub(const struct m_sub_property *props, int action, void *arg);
+
#endif /* MPLAYER_M_PROPERTY_H */