2 * mlt_properties.c -- base properties class
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Charles Yates <charles.yates@pandora.be>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 #include "mlt_properties.h"
23 #include "mlt_property.h"
29 /* ---------------- // Private Implementation // ---------------- */
31 /** Private implementation of the property list.
43 /** Basic implementation.
46 int mlt_properties_init( mlt_properties
this, void *child
)
49 memset( this, 0, sizeof( struct mlt_properties_s
) );
51 // Assign the child of the object
54 // Allocate the private structure
55 this->private = calloc( sizeof( property_list
), 1 );
57 return this->private == NULL
;
60 /** Locate a property by name
63 static mlt_property
mlt_properties_find( mlt_properties
this, char *name
)
65 mlt_property value
= NULL
;
66 property_list
*list
= this->private;
70 for ( i
= 0; value
== NULL
&& i
< list
->count
; i
++ )
71 if ( !strcmp( list
->name
[ i
], name
) )
72 value
= list
->value
[ i
];
77 /** Add a new property.
80 static mlt_property
mlt_properties_add( mlt_properties
this, char *name
)
82 property_list
*list
= this->private;
84 // Check that we have space and resize if necessary
85 if ( list
->count
== list
->size
)
88 list
->name
= realloc( list
->name
, list
->size
* sizeof( char * ) );
89 list
->value
= realloc( list
->value
, list
->size
* sizeof( mlt_property
) );
92 // Assign name/value pair
93 list
->name
[ list
->count
] = strdup( name
);
94 list
->value
[ list
->count
] = mlt_property_init( );
96 // Return and increment count accordingly
97 return list
->value
[ list
->count
++ ];
100 /** Fetch a property by name - this includes add if not found.
103 static mlt_property
mlt_properties_fetch( mlt_properties
this, char *name
)
105 // Try to find an existing property first
106 mlt_property property
= mlt_properties_find( this, name
);
108 // If it wasn't found, create one
109 if ( property
== NULL
)
110 property
= mlt_properties_add( this, name
);
112 // Return the property
116 /** Set the property.
119 int mlt_properties_set( mlt_properties
this, char *name
, char *value
)
123 // Fetch the property to work with
124 mlt_property property
= mlt_properties_fetch( this, name
);
126 // Set it if not NULL
127 if ( property
!= NULL
)
128 error
= mlt_property_set_string( property
, value
);
133 /** Get a string value by name.
136 char *mlt_properties_get( mlt_properties
this, char *name
)
138 mlt_property value
= mlt_properties_find( this, name
);
139 return value
== NULL ? NULL
: mlt_property_get_string( value
);
142 /** Get a name by index.
145 char *mlt_properties_get_name( mlt_properties
this, int index
)
147 property_list
*list
= this->private;
148 if ( index
>= 0 && index
< list
->count
)
149 return list
->name
[ index
];
153 /** Get a string value by index.
156 char *mlt_properties_get_value( mlt_properties
this, int index
)
158 property_list
*list
= this->private;
159 if ( index
>= 0 && index
< list
->count
)
160 return mlt_property_get_string( list
->value
[ index
] );
164 /** Return the number of items in the list.
167 int mlt_properties_count( mlt_properties
this )
169 property_list
*list
= this->private;
173 /** Set a value by parsing a name=value string
176 int mlt_properties_parse( mlt_properties
this, char *namevalue
)
178 char *name
= strdup( namevalue
);
179 char *value
= strdup( namevalue
);
182 if ( strchr( name
, '=' ) )
184 *( strchr( name
, '=' ) ) = '\0';
185 strcpy( value
, strchr( value
, '=' ) + 1 );
192 error
= mlt_properties_set( this, name
, value
);
200 /** Get a value associated to the name.
203 int mlt_properties_get_int( mlt_properties
this, char *name
)
205 mlt_property value
= mlt_properties_find( this, name
);
206 return value
== NULL ?
0 : mlt_property_get_int( value
);
209 /** Set a value associated to the name.
212 int mlt_properties_set_int( mlt_properties
this, char *name
, int value
)
216 // Fetch the property to work with
217 mlt_property property
= mlt_properties_fetch( this, name
);
219 // Set it if not NULL
220 if ( property
!= NULL
)
221 error
= mlt_property_set_int( property
, value
);
226 /** Get a value associated to the name.
229 double mlt_properties_get_double( mlt_properties
this, char *name
)
231 mlt_property value
= mlt_properties_find( this, name
);
232 return value
== NULL ?
0 : mlt_property_get_double( value
);
235 /** Set a value associated to the name.
238 int mlt_properties_set_double( mlt_properties
this, char *name
, double value
)
242 // Fetch the property to work with
243 mlt_property property
= mlt_properties_fetch( this, name
);
245 // Set it if not NULL
246 if ( property
!= NULL
)
247 error
= mlt_property_set_double( property
, value
);
252 /** Get a value associated to the name.
255 mlt_timecode
mlt_properties_get_timecode( mlt_properties
this, char *name
)
257 mlt_property value
= mlt_properties_find( this, name
);
258 return value
== NULL ?
0 : mlt_property_get_timecode( value
);
261 /** Set a value associated to the name.
264 int mlt_properties_set_timecode( mlt_properties
this, char *name
, mlt_timecode value
)
268 // Fetch the property to work with
269 mlt_property property
= mlt_properties_fetch( this, name
);
271 // Set it if not NULL
272 if ( property
!= NULL
)
273 error
= mlt_property_set_timecode( property
, value
);
278 /** Get a value associated to the name.
281 void *mlt_properties_get_data( mlt_properties
this, char *name
, int *length
)
283 mlt_property value
= mlt_properties_find( this, name
);
284 return value
== NULL ? NULL
: mlt_property_get_data( value
, length
);
287 /** Set a value associated to the name.
290 int mlt_properties_set_data( mlt_properties
this, char *name
, void *value
, int length
, mlt_destructor destroy
, mlt_serialiser serialise
)
294 // Fetch the property to work with
295 mlt_property property
= mlt_properties_fetch( this, name
);
297 // Set it if not NULL
298 if ( property
!= NULL
)
299 error
= mlt_property_set_data( property
, value
, length
, destroy
, serialise
);
307 void mlt_properties_close( mlt_properties
this )
309 property_list
*list
= this->private;
312 // Clean up names and values
313 for ( index
= 0; index
< list
->count
; index
++ )
315 free( list
->name
[ index
] );
316 mlt_property_close( list
->value
[ index
] );