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 return calloc( 1, sizeof( struct mlt_property_s ) );
40 void mlt_property_clear( mlt_property this )
42 // Special case data handling
43 if ( this->types & mlt_prop_data && this->destructor != NULL )
44 this->destructor( this->data );
46 // Special case string handling
47 if ( this->types & mlt_prop_string )
48 free( this->prop_string );
50 // We can wipe it now.
51 memset( this, 0, sizeof( struct mlt_property_s ) );
54 /** Set an int on this property.
57 int mlt_property_set_int( mlt_property this, int value )
59 mlt_property_clear( this );
60 this->types = mlt_prop_int;
61 this->prop_int = value;
65 /** Set a double on this property.
68 int mlt_property_set_double( mlt_property this, double value )
70 mlt_property_clear( this );
71 this->types = mlt_prop_double;
72 this->prop_double = value;
76 /** Set a position on this property.
79 int mlt_property_set_position( mlt_property this, mlt_position value )
81 mlt_property_clear( this );
82 this->types = mlt_prop_position;
83 this->prop_position = value;
87 /** Set a string on this property.
90 int mlt_property_set_string( mlt_property this, char *value )
92 mlt_property_clear( this );
93 this->types = mlt_prop_string;
95 this->prop_string = strdup( value );
96 return this->prop_string != NULL;
99 /** Set an int64 on this property.
102 int mlt_property_set_int64( mlt_property this, int64_t value )
104 mlt_property_clear( this );
105 this->types = mlt_prop_int64;
106 this->prop_int64 = value;
110 /** Set a data on this property.
113 int mlt_property_set_data( mlt_property this, void *value, int length, mlt_destructor destructor, mlt_serialiser serialiser )
115 if ( this->data == value )
116 this->destructor = NULL;
117 mlt_property_clear( this );
118 this->types = mlt_prop_data;
120 this->length = length;
121 this->destructor = destructor;
122 this->serialiser = serialiser;
126 /** Get an int from this property.
129 int mlt_property_get_int( mlt_property this )
131 if ( this->types & mlt_prop_int )
132 return this->prop_int;
133 else if ( this->types & mlt_prop_double )
134 return ( int )this->prop_double;
135 else if ( this->types & mlt_prop_position )
136 return ( int )this->prop_position;
137 else if ( this->types & mlt_prop_int64 )
138 return ( int )this->prop_int64;
139 else if ( this->types & mlt_prop_string )
140 return atoi( this->prop_string );
144 /** Get a double from this property.
147 double mlt_property_get_double( mlt_property this )
149 if ( this->types & mlt_prop_double )
150 return this->prop_double;
151 else if ( this->types & mlt_prop_int )
152 return ( double )this->prop_int;
153 else if ( this->types & mlt_prop_position )
154 return ( double )this->prop_position;
155 else if ( this->types & mlt_prop_int64 )
156 return ( double )this->prop_int64;
157 else if ( this->types & mlt_prop_string )
158 return atof( this->prop_string );
162 /** Get a position from this property.
165 mlt_position mlt_property_get_position( mlt_property this )
167 if ( this->types & mlt_prop_position )
168 return this->prop_position;
169 else if ( this->types & mlt_prop_int )
170 return ( mlt_position )this->prop_int;
171 else if ( this->types & mlt_prop_double )
172 return ( mlt_position )this->prop_double;
173 else if ( this->types & mlt_prop_int64 )
174 return ( mlt_position )this->prop_int64;
175 else if ( this->types & mlt_prop_string )
176 return ( mlt_position )atol( this->prop_string );
180 /** Get an int64 from this property.
183 int64_t mlt_property_get_int64( mlt_property this )
185 if ( this->types & mlt_prop_int64 )
186 return this->prop_int64;
187 else if ( this->types & mlt_prop_int )
188 return ( int64_t )this->prop_int;
189 else if ( this->types & mlt_prop_double )
190 return ( int64_t )this->prop_double;
191 else if ( this->types & mlt_prop_position )
192 return ( int64_t )this->prop_position;
193 else if ( this->types & mlt_prop_string )
194 return ( int64_t )atol( this->prop_string );
198 /** Get a string from this property.
201 char *mlt_property_get_string( mlt_property this )
203 // Construct a string if need be
204 if ( ! ( this->types & mlt_prop_string ) )
206 if ( this->types & mlt_prop_int )
208 this->types |= mlt_prop_string;
209 this->prop_string = malloc( 32 );
210 sprintf( this->prop_string, "%d", this->prop_int );
212 else if ( this->types & mlt_prop_double )
214 this->types |= mlt_prop_string;
215 this->prop_string = malloc( 32 );
216 sprintf( this->prop_string, "%e", this->prop_double );
218 else if ( this->types & mlt_prop_position )
220 this->types |= mlt_prop_string;
221 this->prop_string = malloc( 32 );
222 sprintf( this->prop_string, "%d", this->prop_position );
224 else if ( this->types & mlt_prop_int64 )
226 this->types |= mlt_prop_string;
227 this->prop_string = malloc( 32 );
228 sprintf( this->prop_string, "%lld", this->prop_int64 );
230 else if ( this->types & mlt_prop_data && this->serialiser != NULL )
232 this->types |= mlt_prop_string;
233 this->prop_string = this->serialiser( this->data, this->length );
237 // Return the string (may be NULL)
238 return this->prop_string;
241 /** Get a data and associated length.
244 void *mlt_property_get_data( mlt_property this, int *length )
246 // Assign length if not NULL
247 if ( length != NULL )
248 *length = this->length;
250 // Return the data (note: there is no conversion here)
254 /** Close this property.
257 void mlt_property_close( mlt_property this )
259 mlt_property_clear( this );