27f4a27b6e41c3b43b0b25c3f43dd7db88a4eb32
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 /** Constructor for stand alone object.
63 mlt_properties
mlt_properties_new( )
65 // Construct a standalone properties object
66 mlt_properties
this = calloc( sizeof( struct mlt_properties_s
), 1 );
69 mlt_properties_init( this, NULL
);
75 /** Special case - when a container (such as fezzik) is protecting another
76 producer, we need to ensure that properties are passed through to the
80 static void mlt_properties_do_mirror( mlt_properties
this, char *name
)
82 mlt_properties mirror
= mlt_properties_get_data( this, "mlt_mirror", NULL
);
85 char *value
= mlt_properties_get( this, name
);
87 mlt_properties_set( mirror
, name
, value
);
91 /** Allow the specification of a mirror.
94 void mlt_properties_mirror( mlt_properties
this, mlt_properties that
)
96 mlt_properties_set_data( this, "mlt_mirror", that
, 0, NULL
, NULL
);
99 /** Inherit all serialisable properties from that into this.
102 int mlt_properties_inherit( mlt_properties
this, mlt_properties that
)
104 int count
= mlt_properties_count( that
);
107 char *value
= mlt_properties_get_value( that
, count
);
110 char *name
= mlt_properties_get_name( that
, count
);
111 mlt_properties_set( this, name
, value
);
117 /** Locate a property by name
120 static mlt_property
mlt_properties_find( mlt_properties
this, char *name
)
122 mlt_property value
= NULL
;
123 property_list
*list
= this->private;
127 for ( i
= 0; value
== NULL
&& i
< list
->count
; i
++ )
128 if ( !strcmp( list
->name
[ i
], name
) )
129 value
= list
->value
[ i
];
134 /** Add a new property.
137 static mlt_property
mlt_properties_add( mlt_properties
this, char *name
)
139 property_list
*list
= this->private;
141 // Check that we have space and resize if necessary
142 if ( list
->count
== list
->size
)
145 list
->name
= realloc( list
->name
, list
->size
* sizeof( char * ) );
146 list
->value
= realloc( list
->value
, list
->size
* sizeof( mlt_property
) );
149 // Assign name/value pair
150 list
->name
[ list
->count
] = strdup( name
);
151 list
->value
[ list
->count
] = mlt_property_init( );
153 // Return and increment count accordingly
154 return list
->value
[ list
->count
++ ];
157 /** Fetch a property by name - this includes add if not found.
160 static mlt_property
mlt_properties_fetch( mlt_properties
this, char *name
)
162 // Try to find an existing property first
163 mlt_property property
= mlt_properties_find( this, name
);
165 // If it wasn't found, create one
166 if ( property
== NULL
)
167 property
= mlt_properties_add( this, name
);
169 // Return the property
173 /** Set the property.
176 int mlt_properties_set( mlt_properties
this, char *name
, char *value
)
180 // Fetch the property to work with
181 mlt_property property
= mlt_properties_fetch( this, name
);
183 // Set it if not NULL
184 if ( property
!= NULL
)
186 error
= mlt_property_set_string( property
, value
);
187 mlt_properties_do_mirror( this, name
);
193 /** Get a string value by name.
196 char *mlt_properties_get( mlt_properties
this, char *name
)
198 mlt_property value
= mlt_properties_find( this, name
);
199 return value
== NULL ? NULL
: mlt_property_get_string( value
);
202 /** Get a name by index.
205 char *mlt_properties_get_name( mlt_properties
this, int index
)
207 property_list
*list
= this->private;
208 if ( index
>= 0 && index
< list
->count
)
209 return list
->name
[ index
];
213 /** Get a string value by index.
216 char *mlt_properties_get_value( mlt_properties
this, int index
)
218 property_list
*list
= this->private;
219 if ( index
>= 0 && index
< list
->count
)
220 return mlt_property_get_string( list
->value
[ index
] );
224 /** Return the number of items in the list.
227 int mlt_properties_count( mlt_properties
this )
229 property_list
*list
= this->private;
233 /** Set a value by parsing a name=value string
236 int mlt_properties_parse( mlt_properties
this, char *namevalue
)
238 char *name
= strdup( namevalue
);
239 char *value
= strdup( namevalue
);
242 if ( strchr( name
, '=' ) )
244 *( strchr( name
, '=' ) ) = '\0';
245 strcpy( value
, strchr( value
, '=' ) + 1 );
252 error
= mlt_properties_set( this, name
, value
);
260 /** Get a value associated to the name.
263 int mlt_properties_get_int( mlt_properties
this, char *name
)
265 mlt_property value
= mlt_properties_find( this, name
);
266 return value
== NULL ?
0 : mlt_property_get_int( value
);
269 /** Set a value associated to the name.
272 int mlt_properties_set_int( mlt_properties
this, char *name
, int value
)
276 // Fetch the property to work with
277 mlt_property property
= mlt_properties_fetch( this, name
);
279 // Set it if not NULL
280 if ( property
!= NULL
)
282 error
= mlt_property_set_int( property
, value
);
283 mlt_properties_do_mirror( this, name
);
289 /** Get a value associated to the name.
292 double mlt_properties_get_double( mlt_properties
this, char *name
)
294 mlt_property value
= mlt_properties_find( this, name
);
295 return value
== NULL ?
0 : mlt_property_get_double( value
);
298 /** Set a value associated to the name.
301 int mlt_properties_set_double( mlt_properties
this, char *name
, double value
)
305 // Fetch the property to work with
306 mlt_property property
= mlt_properties_fetch( this, name
);
308 // Set it if not NULL
309 if ( property
!= NULL
)
311 error
= mlt_property_set_double( property
, value
);
312 mlt_properties_do_mirror( this, name
);
318 /** Get a value associated to the name.
321 mlt_position
mlt_properties_get_position( mlt_properties
this, char *name
)
323 mlt_property value
= mlt_properties_find( this, name
);
324 return value
== NULL ?
0 : mlt_property_get_position( value
);
327 /** Set a value associated to the name.
330 int mlt_properties_set_position( mlt_properties
this, char *name
, mlt_position value
)
334 // Fetch the property to work with
335 mlt_property property
= mlt_properties_fetch( this, name
);
337 // Set it if not NULL
338 if ( property
!= NULL
)
340 error
= mlt_property_set_position( property
, value
);
341 mlt_properties_do_mirror( this, name
);
347 /** Get a value associated to the name.
350 void *mlt_properties_get_data( mlt_properties
this, char *name
, int *length
)
352 mlt_property value
= mlt_properties_find( this, name
);
353 return value
== NULL ? NULL
: mlt_property_get_data( value
, length
);
356 /** Set a value associated to the name.
359 int mlt_properties_set_data( mlt_properties
this, char *name
, void *value
, int length
, mlt_destructor destroy
, mlt_serialiser serialise
)
363 // Fetch the property to work with
364 mlt_property property
= mlt_properties_fetch( this, name
);
366 // Set it if not NULL
367 if ( property
!= NULL
)
368 error
= mlt_property_set_data( property
, value
, length
, destroy
, serialise
);
376 void mlt_properties_close( mlt_properties
this )
378 property_list
*list
= this->private;
381 // Clean up names and values
382 for ( index
= list
->count
- 1; index
>= 0; index
-- )
384 free( list
->name
[ index
] );
385 mlt_property_close( list
->value
[ index
] );
393 // Free this now if this has no child
394 if ( this->child
== NULL
)