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( sizeof( struct mlt_property_s
), 1 );
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 timecode on this property.
79 int mlt_property_set_timecode( mlt_property
this, mlt_timecode value
)
81 mlt_property_clear( this );
82 this->types
= mlt_prop_timecode
;
83 this->prop_timecode
= 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 a data on this property.
102 int mlt_property_set_data( mlt_property
this, void *value
, int length
, mlt_destructor destructor
, mlt_serialiser serialiser
)
104 if ( this->data
== value
)
105 this->destructor
= NULL
;
106 mlt_property_clear( this );
107 this->types
= mlt_prop_data
;
109 this->length
= length
;
110 this->destructor
= destructor
;
111 this->serialiser
= serialiser
;
115 /** Get an int from this property.
118 int mlt_property_get_int( mlt_property
this )
120 if ( this->types
& mlt_prop_int
)
121 return this->prop_int
;
122 else if ( this->types
& mlt_prop_double
)
123 return ( int )this->prop_double
;
124 else if ( this->types
& mlt_prop_timecode
)
125 return ( int )this->prop_timecode
;
126 else if ( this->types
& mlt_prop_string
)
127 return atoi( this->prop_string
);
131 /** Get a double from this property.
134 double mlt_property_get_double( mlt_property
this )
136 if ( this->types
& mlt_prop_double
)
137 return this->prop_double
;
138 else if ( this->types
& mlt_prop_int
)
139 return ( double )this->prop_int
;
140 else if ( this->types
& mlt_prop_timecode
)
141 return ( double )this->prop_timecode
;
142 else if ( this->types
& mlt_prop_string
)
143 return atof( this->prop_string
);
147 /** Get a timecode from this property.
150 mlt_timecode
mlt_property_get_timecode( mlt_property
this )
152 if ( this->types
& mlt_prop_timecode
)
153 return this->prop_timecode
;
154 else if ( this->types
& mlt_prop_int
)
155 return ( mlt_timecode
)this->prop_int
;
156 else if ( this->types
& mlt_prop_double
)
157 return ( mlt_timecode
)this->prop_double
;
158 else if ( this->types
& mlt_prop_string
)
159 return ( mlt_timecode
)atof( this->prop_string
);
163 /** Get a string from this property.
166 char *mlt_property_get_string( mlt_property
this )
168 // Construct a string if need be
169 if ( ! ( this->types
& mlt_prop_string
) )
171 if ( this->types
& mlt_prop_int
)
173 this->types
|= mlt_prop_string
;
174 this->prop_string
= malloc( 32 );
175 sprintf( this->prop_string
, "%d", this->prop_int
);
177 else if ( this->types
& mlt_prop_double
)
179 this->types
|= mlt_prop_string
;
180 this->prop_string
= malloc( 32 );
181 sprintf( this->prop_string
, "%e", this->prop_double
);
183 else if ( this->types
& mlt_prop_timecode
)
185 this->types
|= mlt_prop_string
;
186 this->prop_string
= malloc( 32 );
187 sprintf( this->prop_string
, "%e", this->prop_timecode
);
189 else if ( this->types
& mlt_prop_data
&& this->serialiser
!= NULL
)
191 this->types
|= mlt_prop_string
;
192 this->prop_string
= this->serialiser( this->data
, this->length
);
196 // Return the string (may be NULL)
197 return this->prop_string
;
200 /** Get a data and associated length.
203 void *mlt_property_get_data( mlt_property
this, int *length
)
205 // Assign length if not NULL
206 if ( length
!= NULL
)
207 *length
= this->length
;
209 // Return the data (note: there is no conversion here)
213 /** Close this property.
216 void mlt_property_close( mlt_property
this )
218 mlt_property_clear( this );