2 * mlt_property.c -- property 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.
23 #include "mlt_property.h"
29 /** Construct and uninitialised property.
32 mlt_property mlt_property_init( )
34 mlt_property this = malloc( sizeof( struct mlt_property_s ) );
39 this->prop_position = 0;
40 this->prop_double = 0;
42 this->prop_string = NULL;
45 this->destructor = NULL;
46 this->serialiser = NULL;
54 static inline void mlt_property_clear( mlt_property this )
56 // Special case data handling
57 if ( this->types & mlt_prop_data && this->destructor != NULL )
58 this->destructor( this->data );
60 // Special case string handling
61 if ( this->types & mlt_prop_string )
62 free( this->prop_string );
67 this->prop_position = 0;
68 this->prop_double = 0;
70 this->prop_string = NULL;
73 this->destructor = NULL;
74 this->serialiser = NULL;
77 /** Set an int on this property.
80 int mlt_property_set_int( mlt_property this, int value )
82 mlt_property_clear( this );
83 this->types = mlt_prop_int;
84 this->prop_int = value;
88 /** Set a double on this property.
91 int mlt_property_set_double( mlt_property this, double value )
93 mlt_property_clear( this );
94 this->types = mlt_prop_double;
95 this->prop_double = value;
99 /** Set a position on this property.
102 int mlt_property_set_position( mlt_property this, mlt_position value )
104 mlt_property_clear( this );
105 this->types = mlt_prop_position;
106 this->prop_position = value;
110 /** Set a string on this property.
113 int mlt_property_set_string( mlt_property this, char *value )
115 mlt_property_clear( this );
116 this->types = mlt_prop_string;
118 this->prop_string = strdup( value );
119 return this->prop_string == NULL;
122 /** Set an int64 on this property.
125 int mlt_property_set_int64( mlt_property this, int64_t value )
127 mlt_property_clear( this );
128 this->types = mlt_prop_int64;
129 this->prop_int64 = value;
133 /** Set a data on this property.
136 int mlt_property_set_data( mlt_property this, void *value, int length, mlt_destructor destructor, mlt_serialiser serialiser )
138 if ( this->data == value )
139 this->destructor = NULL;
140 mlt_property_clear( this );
141 this->types = mlt_prop_data;
143 this->length = length;
144 this->destructor = destructor;
145 this->serialiser = serialiser;
149 /** Get an int from this property.
152 int mlt_property_get_int( mlt_property this )
154 if ( this->types & mlt_prop_int )
155 return this->prop_int;
156 else if ( this->types & mlt_prop_double )
157 return ( int )this->prop_double;
158 else if ( this->types & mlt_prop_position )
159 return ( int )this->prop_position;
160 else if ( this->types & mlt_prop_int64 )
161 return ( int )this->prop_int64;
162 else if ( this->types & mlt_prop_string )
163 return atoi( this->prop_string );
167 /** Get a double from this property.
170 double mlt_property_get_double( mlt_property this )
172 if ( this->types & mlt_prop_double )
173 return this->prop_double;
174 else if ( this->types & mlt_prop_int )
175 return ( double )this->prop_int;
176 else if ( this->types & mlt_prop_position )
177 return ( double )this->prop_position;
178 else if ( this->types & mlt_prop_int64 )
179 return ( double )this->prop_int64;
180 else if ( this->types & mlt_prop_string )
181 return atof( this->prop_string );
185 /** Get a position from this property.
188 mlt_position mlt_property_get_position( mlt_property this )
190 if ( this->types & mlt_prop_position )
191 return this->prop_position;
192 else if ( this->types & mlt_prop_int )
193 return ( mlt_position )this->prop_int;
194 else if ( this->types & mlt_prop_double )
195 return ( mlt_position )this->prop_double;
196 else if ( this->types & mlt_prop_int64 )
197 return ( mlt_position )this->prop_int64;
198 else if ( this->types & mlt_prop_string )
199 return ( mlt_position )atol( this->prop_string );
203 /** Get an int64 from this property.
206 int64_t mlt_property_get_int64( mlt_property this )
208 if ( this->types & mlt_prop_int64 )
209 return this->prop_int64;
210 else if ( this->types & mlt_prop_int )
211 return ( int64_t )this->prop_int;
212 else if ( this->types & mlt_prop_double )
213 return ( int64_t )this->prop_double;
214 else if ( this->types & mlt_prop_position )
215 return ( int64_t )this->prop_position;
216 else if ( this->types & mlt_prop_string )
217 return ( int64_t )atol( this->prop_string );
221 /** Get a string from this property.
224 char *mlt_property_get_string( mlt_property this )
226 // Construct a string if need be
227 if ( ! ( this->types & mlt_prop_string ) )
229 if ( this->types & mlt_prop_int )
231 this->types |= mlt_prop_string;
232 this->prop_string = malloc( 32 );
233 sprintf( this->prop_string, "%d", this->prop_int );
235 else if ( this->types & mlt_prop_double )
237 this->types |= mlt_prop_string;
238 this->prop_string = malloc( 32 );
239 sprintf( this->prop_string, "%e", this->prop_double );
241 else if ( this->types & mlt_prop_position )
243 this->types |= mlt_prop_string;
244 this->prop_string = malloc( 32 );
245 sprintf( this->prop_string, "%d", this->prop_position );
247 else if ( this->types & mlt_prop_int64 )
249 this->types |= mlt_prop_string;
250 this->prop_string = malloc( 32 );
251 sprintf( this->prop_string, "%lld", this->prop_int64 );
253 else if ( this->types & mlt_prop_data && this->serialiser != NULL )
255 this->types |= mlt_prop_string;
256 this->prop_string = this->serialiser( this->data, this->length );
260 // Return the string (may be NULL)
261 return this->prop_string;
264 /** Get a data and associated length.
267 void *mlt_property_get_data( mlt_property this, int *length )
269 // Assign length if not NULL
270 if ( length != NULL )
271 *length = this->length;
273 // Return the data (note: there is no conversion here)
277 /** Close this property.
280 void mlt_property_close( mlt_property this )
282 mlt_property_clear( this );