127 lines
3.2 KiB
C++
127 lines
3.2 KiB
C++
/*
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Copyright (C) 2011 David Robillard
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Copyright (C) 2013 Paul Davis
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at
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your option) any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __JackMetadata__
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#define __JackMetadata__
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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// libdb does not work in 32bit mixed mode
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#ifdef BUILD_WITH_32_64
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#undef HAVE_DB
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#define HAVE_DB 0
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#endif
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#include <stdint.h>
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#include <limits.h>
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#if HAVE_DB
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#include <db.h>
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#endif
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#include <jack/uuid.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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const char* key;
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const char* data;
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const char* type;
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} jack_property_t;
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typedef struct {
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jack_uuid_t subject;
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uint32_t property_cnt;
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jack_property_t* properties;
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uint32_t property_size;
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} jack_description_t;
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typedef enum {
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PropertyCreated,
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PropertyChanged,
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PropertyDeleted
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} jack_property_change_t;
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typedef void (*JackPropertyChangeCallback)(jack_uuid_t subject,
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const char* key,
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jack_property_change_t change,
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void* arg);
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#ifdef __cplusplus
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}
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#endif
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namespace Jack
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{
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class JackClient;
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/*!
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\brief Metadata base.
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*/
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class JackMetadata
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{
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private:
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#if HAVE_DB
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DB* fDB;
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DB_ENV* fDBenv;
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const bool fIsEngine;
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char fDBFilesDir[PATH_MAX + 1];
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#endif
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int PropertyInit();
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int PropertyChangeNotify(JackClient* client, jack_uuid_t subject, const char* key, jack_property_change_t change);
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#if HAVE_DB
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void MakeKeyDbt(DBT* dbt, jack_uuid_t subject, const char* key);
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#endif
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public:
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JackMetadata(bool isEngine);
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~JackMetadata();
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int GetProperty(jack_uuid_t subject, const char* key, char** value, char** type);
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int GetProperties(jack_uuid_t subject, jack_description_t* desc);
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int GetAllProperties(jack_description_t** descriptions);
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int GetDescription(jack_uuid_t subject, jack_description_t* desc);
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int GetAllDescriptions(jack_description_t** descs);
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void FreeDescription(jack_description_t* desc, int free_actual_description_too);
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int SetProperty(JackClient* client, jack_uuid_t subject, const char* key, const char* value, const char* type);
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int RemoveProperty(JackClient* client, jack_uuid_t subject, const char* key);
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int RemoveProperties(JackClient* client, jack_uuid_t subject);
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int RemoveAllProperties(JackClient* client);
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};
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} // end of namespace
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#endif
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