Loading...
Searching...
No Matches
metadata.h
Go to the documentation of this file.
/* PipeWire */
/* SPDX-FileCopyrightText: Copyright © 2019 Wim Taymans */
/* SPDX-License-Identifier: MIT */
#ifndef PIPEWIRE_EXT_METADATA_H
#define PIPEWIRE_EXT_METADATA_H
#ifdef __cplusplus
extern "C" {
#endif
#include <spa/utils/defs.h>
#define PW_TYPE_INTERFACE_Metadata PW_TYPE_INFO_INTERFACE_BASE "Metadata"
#define PW_METADATA_PERM_MASK PW_PERM_RWX
#define PW_VERSION_METADATA 3
struct pw_metadata;
#define PW_EXTENSION_MODULE_METADATA PIPEWIRE_MODULE_PREFIX "module-metadata"
#define PW_METADATA_EVENT_PROPERTY 0
#define PW_METADATA_EVENT_NUM 1
struct pw_metadata_events {
#define PW_VERSION_METADATA_EVENTS 0
uint32_t version;
int (*property) (void *data,
uint32_t subject,
const char *key,
const char *type,
const char *value);
};
#define PW_METADATA_METHOD_ADD_LISTENER 0
#define PW_METADATA_METHOD_SET_PROPERTY 1
#define PW_METADATA_METHOD_CLEAR 2
#define PW_METADATA_METHOD_NUM 3
struct pw_metadata_methods {
#define PW_VERSION_METADATA_METHODS 0
uint32_t version;
int (*add_listener) (void *object,
struct spa_hook *listener,
const struct pw_metadata_events *events,
void *data);
int (*set_property) (void *object,
uint32_t subject,
const char *key,
const char *type,
const char *value);
int (*clear) (void *object);
};
#define pw_metadata_method(o,method,version,...) \
({ \
int _res = -ENOTSUP; \
spa_interface_call_res((struct spa_interface*)o, \
struct pw_metadata_methods, _res, \
method, version, ##__VA_ARGS__); \
_res; \
})
#define pw_metadata_add_listener(c,...) pw_metadata_method(c,add_listener,0,__VA_ARGS__)
#define pw_metadata_set_property(c,...) pw_metadata_method(c,set_property,0,__VA_ARGS__)
#define pw_metadata_clear(c) pw_metadata_method(c,clear,0)
#define PW_KEY_METADATA_NAME "metadata.name"
#define PW_KEY_METADATA_VALUES "metadata.values"
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* PIPEWIRE_EXT_METADATA_H */
defs.h
spa/utils/defs.h
pw_metadata_events
Metadata events
Definition metadata.h:47
pw_metadata_events::version
uint32_t version
Definition metadata.h:50
pw_metadata_events::property
int(* property)(void *data, uint32_t subject, const char *key, const char *type, const char *value)
Definition metadata.h:52
pw_metadata_methods
Metadata methods
Definition metadata.h:69
pw_metadata_methods::clear
int(* clear)(void *object)
Clear all metadata.
Definition metadata.h:106
pw_metadata_methods::add_listener
int(* add_listener)(void *object, struct spa_hook *listener, const struct pw_metadata_events *events, void *data)
Definition metadata.h:74
pw_metadata_methods::set_property
int(* set_property)(void *object, uint32_t subject, const char *key, const char *type, const char *value)
Set a metadata property.
Definition metadata.h:95
pw_metadata_methods::version
uint32_t version
Definition metadata.h:72
pw_metadata
spa_hook
A hook, contains the structure with functions and the data passed to the functions.
Definition hook.h:350