metadata.h

Go to the documentation of this file.

/*
  Copyright (C) 2011 David Robillard
  Copyright (C) 2013 Paul Davis

  This program 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.

  This program 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 this program; if not, write to the Free Software Foundation,
  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/

#ifndef __jack_metadata_h__
#define __jack_metadata_h__

#include <jack/types.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef struct {
    const char* key;

    const char* data;

    const char* type;
} jack_property_t;

int
jack_set_property(jack_client_t*,
                  jack_uuid_t subject,
                  const char* key,
                  const char* value,
                  const char* type);

int
jack_get_property(jack_uuid_t subject,
                  const char* key,
                  char**      value,
                  char**      type);

typedef struct {
    jack_uuid_t      subject;        
    uint32_t         property_cnt;   
    jack_property_t* properties;     
    uint32_t         property_size;  
} jack_description_t;

void
jack_free_description (jack_description_t* desc, int free_description_itself);

int
jack_get_properties (jack_uuid_t         subject,
                     jack_description_t* desc);

int
jack_get_all_properties (jack_description_t** descs);

int jack_remove_property (jack_client_t* client, jack_uuid_t subject, const char* key);

int jack_remove_properties (jack_client_t* client, jack_uuid_t subject);

int jack_remove_all_properties (jack_client_t* client);

typedef enum {
        PropertyCreated,
        PropertyChanged,
        PropertyDeleted
} jack_property_change_t;

typedef void (*JackPropertyChangeCallback)(jack_uuid_t            subject,
                                           const char*            key,
                                           jack_property_change_t change,
                                           void*                  arg);

int jack_set_property_change_callback (jack_client_t*             client,
                                       JackPropertyChangeCallback callback,
                                       void*                      arg);

#ifdef __cplusplus
} /* namespace */
#endif

extern const char* JACK_METADATA_PRETTY_NAME;
extern const char* JACK_METADATA_HARDWARE;
extern const char* JACK_METADATA_CONNECTED;
extern const char* JACK_METADATA_PORT_GROUP;
extern const char* JACK_METADATA_ICON_SMALL;
extern const char* JACK_METADATA_ICON_LARGE;

#endif  /* __jack_metadata_h__ */

---