proxy.h

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/* PipeWire
 *
 * Copyright © 2018 Wim Taymans
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */
 
#ifndef PIPEWIRE_PROXY_H
#define PIPEWIRE_PROXY_H
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include <spa/utils/hook.h>
 
struct pw_proxy;
 
#include <pipewire/protocol.h>
 
struct pw_proxy_events {
#define PW_VERSION_PROXY_EVENTS         0
        uint32_t version;
 
        void (*destroy) (void *data);
 
        void (*bound) (void *data, uint32_t global_id);
 
        void (*removed) (void *data);
 
        void (*done) (void *data, int seq);
 
        void (*error) (void *data, int seq, int res, const char *message);
};
 
/* Make a new proxy object. The id can be used to bind to a remote object and
 * can be retrieved with \ref pw_proxy_get_id . */
struct pw_proxy *
pw_proxy_new(struct pw_proxy *factory,
             const char *type,          /* interface type */
             uint32_t version,          /* interface version */
             size_t user_data_size      /* size of user data */);
 
void pw_proxy_add_listener(struct pw_proxy *proxy,
                           struct spa_hook *listener,
                           const struct pw_proxy_events *events,
                           void *data);
 
void pw_proxy_add_object_listener(struct pw_proxy *proxy,       
                                 struct spa_hook *listener,     
                                 const void *funcs,             
                                 void *data                     );
 
void pw_proxy_destroy(struct pw_proxy *proxy);
 
void pw_proxy_ref(struct pw_proxy *proxy);
void pw_proxy_unref(struct pw_proxy *proxy);
 
void *pw_proxy_get_user_data(struct pw_proxy *proxy);
 
uint32_t pw_proxy_get_id(struct pw_proxy *proxy);
 
const char *pw_proxy_get_type(struct pw_proxy *proxy, uint32_t *version);
 
struct pw_protocol *pw_proxy_get_protocol(struct pw_proxy *proxy);
 
int pw_proxy_sync(struct pw_proxy *proxy, int seq);
 
int pw_proxy_set_bound_id(struct pw_proxy *proxy, uint32_t global_id);
uint32_t pw_proxy_get_bound_id(struct pw_proxy *proxy);
 
int pw_proxy_error(struct pw_proxy *proxy, int res, const char *error);
int pw_proxy_errorf(struct pw_proxy *proxy, int res, const char *error, ...) SPA_PRINTF_FUNC(3, 4);
 
struct spa_hook_list *pw_proxy_get_object_listeners(struct pw_proxy *proxy);
 
const struct pw_protocol_marshal *pw_proxy_get_marshal(struct pw_proxy *proxy);
 
int pw_proxy_install_marshal(struct pw_proxy *proxy, bool implementor);
 
#define pw_proxy_notify(p,type,event,version,...)                       \
        spa_hook_list_call(pw_proxy_get_object_listeners(p),            \
                        type, event, version, ## __VA_ARGS__)
 
#define pw_proxy_call(p,type,method,version,...)                        \
        spa_interface_call((struct spa_interface*)p,                    \
                        type, method, version, ##__VA_ARGS__)
 
#define pw_proxy_call_res(p,type,method,version,...)                    \
({                                                                      \
        int _res = -ENOTSUP;                                            \
        spa_interface_call_res((struct spa_interface*)p,                \
                        type, _res, method, version, ##__VA_ARGS__);    \
        _res;                                                           \
})
 
#ifdef __cplusplus
}
#endif
 
#endif /* PIPEWIRE_PROXY_H */