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 /** Inherit all serialisable properties from that into this.
78 int mlt_properties_inherit( mlt_properties this, mlt_properties that )
80 int count = mlt_properties_count( that );
83 char *value = mlt_properties_get_value( that, count );
86 char *name = mlt_properties_get_name( that, count );
87 mlt_properties_set( this, name, value );
93 /** Locate a property by name
96 static mlt_property mlt_properties_find( mlt_properties this, char *name )
98 mlt_property value = NULL;
99 property_list *list = this->private;
103 for ( i = 0; value == NULL && i < list->count; i ++ )
104 if ( !strcmp( list->name[ i ], name ) )
105 value = list->value[ i ];
110 /** Add a new property.
113 static mlt_property mlt_properties_add( mlt_properties this, char *name )
115 property_list *list = this->private;
117 // Check that we have space and resize if necessary
118 if ( list->count == list->size )
121 list->name = realloc( list->name, list->size * sizeof( char * ) );
122 list->value = realloc( list->value, list->size * sizeof( mlt_property ) );
125 // Assign name/value pair
126 list->name[ list->count ] = strdup( name );
127 list->value[ list->count ] = mlt_property_init( );
129 // Return and increment count accordingly
130 return list->value[ list->count ++ ];
133 /** Fetch a property by name - this includes add if not found.
136 static mlt_property mlt_properties_fetch( mlt_properties this, char *name )
138 // Try to find an existing property first
139 mlt_property property = mlt_properties_find( this, name );
141 // If it wasn't found, create one
142 if ( property == NULL )
143 property = mlt_properties_add( this, name );
145 // Return the property
149 /** Set the property.
152 int mlt_properties_set( mlt_properties this, char *name, char *value )
156 // Fetch the property to work with
157 mlt_property property = mlt_properties_fetch( this, name );
159 // Set it if not NULL
160 if ( property != NULL )
161 error = mlt_property_set_string( property, value );
166 /** Get a string value by name.
169 char *mlt_properties_get( mlt_properties this, char *name )
171 mlt_property value = mlt_properties_find( this, name );
172 return value == NULL ? NULL : mlt_property_get_string( value );
175 /** Get a name by index.
178 char *mlt_properties_get_name( mlt_properties this, int index )
180 property_list *list = this->private;
181 if ( index >= 0 && index < list->count )
182 return list->name[ index ];
186 /** Get a string value by index.
189 char *mlt_properties_get_value( mlt_properties this, int index )
191 property_list *list = this->private;
192 if ( index >= 0 && index < list->count )
193 return mlt_property_get_string( list->value[ index ] );
197 /** Return the number of items in the list.
200 int mlt_properties_count( mlt_properties this )
202 property_list *list = this->private;
206 /** Set a value by parsing a name=value string
209 int mlt_properties_parse( mlt_properties this, char *namevalue )
211 char *name = strdup( namevalue );
212 char *value = strdup( namevalue );
215 if ( strchr( name, '=' ) )
217 *( strchr( name, '=' ) ) = '\0';
218 strcpy( value, strchr( value, '=' ) + 1 );
225 error = mlt_properties_set( this, name, value );
233 /** Get a value associated to the name.
236 int mlt_properties_get_int( mlt_properties this, char *name )
238 mlt_property value = mlt_properties_find( this, name );
239 return value == NULL ? 0 : mlt_property_get_int( value );
242 /** Set a value associated to the name.
245 int mlt_properties_set_int( mlt_properties this, char *name, int value )
249 // Fetch the property to work with
250 mlt_property property = mlt_properties_fetch( this, name );
252 // Set it if not NULL
253 if ( property != NULL )
254 error = mlt_property_set_int( property, value );
259 /** Get a value associated to the name.
262 double mlt_properties_get_double( mlt_properties this, char *name )
264 mlt_property value = mlt_properties_find( this, name );
265 return value == NULL ? 0 : mlt_property_get_double( value );
268 /** Set a value associated to the name.
271 int mlt_properties_set_double( mlt_properties this, char *name, double value )
275 // Fetch the property to work with
276 mlt_property property = mlt_properties_fetch( this, name );
278 // Set it if not NULL
279 if ( property != NULL )
280 error = mlt_property_set_double( property, value );
285 /** Get a value associated to the name.
288 mlt_timecode mlt_properties_get_timecode( mlt_properties this, char *name )
290 mlt_property value = mlt_properties_find( this, name );
291 return value == NULL ? 0 : mlt_property_get_timecode( value );
294 /** Set a value associated to the name.
297 int mlt_properties_set_timecode( mlt_properties this, char *name, mlt_timecode value )
301 // Fetch the property to work with
302 mlt_property property = mlt_properties_fetch( this, name );
304 // Set it if not NULL
305 if ( property != NULL )
306 error = mlt_property_set_timecode( property, value );
311 /** Get a value associated to the name.
314 void *mlt_properties_get_data( mlt_properties this, char *name, int *length )
316 mlt_property value = mlt_properties_find( this, name );
317 return value == NULL ? NULL : mlt_property_get_data( value, length );
320 /** Set a value associated to the name.
323 int mlt_properties_set_data( mlt_properties this, char *name, void *value, int length, mlt_destructor destroy, mlt_serialiser serialise )
327 // Fetch the property to work with
328 mlt_property property = mlt_properties_fetch( this, name );
330 // Set it if not NULL
331 if ( property != NULL )
332 error = mlt_property_set_data( property, value, length, destroy, serialise );
340 void mlt_properties_close( mlt_properties this )
342 property_list *list = this->private;
345 int debug = mlt_properties_get_int( this, "debug" );
347 // Clean up names and values
348 for ( index = 0; index < list->count; index ++ )
351 fprintf( stderr, "closing %s\n", list->name[ index ] );
352 free( list->name[ index ] );
353 mlt_property_close( list->value[ index ] );
361 // Free this now if this has no child
362 if ( this->child == NULL )