#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <ctype.h>
/* ---------------- // Private Implementation // ---------------- */
int count;
int size;
mlt_properties mirror;
+ int ref_count;
}
property_list;
/** Memory leak checks.
*/
+//#define _MLT_PROPERTY_CHECKS_
+
#ifdef _MLT_PROPERTY_CHECKS_
static int properties_created = 0;
static int properties_destroyed = 0;
// Allocate the local structure
this->local = calloc( sizeof( property_list ), 1 );
+
+ // Increment the ref count
+ ( ( property_list * )this->local )->ref_count = 1;
}
// Check that initialisation was successful
{
// Temp string
char temp[ 1024 ];
+ char last[ 1024 ] = "";
// Read each string from the file
while( fgets( temp, 1024, file ) )
// Chomp the string
temp[ strlen( temp ) - 1 ] = '\0';
+ // Check if the line starts with a .
+ if ( temp[ 0 ] == '.' )
+ {
+ char temp2[ 1024 ];
+ sprintf( temp2, "%s%s", last, temp );
+ strcpy( temp, temp2 );
+ }
+ else if ( strchr( temp, '=' ) )
+ {
+ strcpy( last, temp );
+ *( strchr( last, '=' ) ) = '\0';
+ }
+
// Parse and set the property
if ( strcmp( temp, "" ) && temp[ 0 ] != '#' )
mlt_properties_parse( this, temp );
}
}
+/** Maintain ref count to allow multiple uses of an mlt object.
+*/
+
+int mlt_properties_inc_ref( mlt_properties this )
+{
+ if ( this != NULL )
+ {
+ property_list *list = this->local;
+ return ++ list->ref_count;
+ }
+ return 0;
+}
+
+/** Maintain ref count to allow multiple uses of an mlt object.
+*/
+
+int mlt_properties_dec_ref( mlt_properties this )
+{
+ if ( this != NULL )
+ {
+ property_list *list = this->local;
+ return -- list->ref_count;
+ }
+ return 0;
+}
+
/** Allow the specification of a mirror.
*/
mlt_property property = mlt_properties_fetch( this, name );
// Set it if not NULL
- if ( property != NULL )
+ if ( property != NULL && ( value == NULL || value[ 0 ] != '@' ) )
{
error = mlt_property_set_string( property, value );
mlt_properties_do_mirror( this, name );
}
+ else if ( property != NULL && value[ 0 ] == '@' )
+ {
+ int total = 0;
+ int current = 0;
+ char id[ 255 ];
+ char op = '+';
+
+ value ++;
+
+ while ( *value != '\0' )
+ {
+ int length = strcspn( value, "+-*/" );
+
+ // Get the identifier
+ strncpy( id, value, length );
+ id[ length ] = '\0';
+ value += length;
+
+ // Determine the value
+ if ( isdigit( id[ 0 ] ) )
+ current = atof( id );
+ else
+ current = mlt_properties_get_int( this, id );
+
+ // Apply the operation
+ switch( op )
+ {
+ case '+':
+ total += current;
+ break;
+ case '-':
+ total -= current;
+ break;
+ case '*':
+ total *= current;
+ break;
+ case '/':
+ total /= current;
+ break;
+ }
+
+ // Get the next op
+ op = *value != '\0' ? *value ++ : ' ';
+ }
+
+ error = mlt_property_set_int( property, total );
+ mlt_properties_do_mirror( this, name );
+ }
+
+ mlt_events_fire( this, "property-changed", name, NULL );
return error;
}
mlt_properties_do_mirror( this, name );
}
+ mlt_events_fire( this, "property-changed", name, NULL );
+
return error;
}
mlt_properties_do_mirror( this, name );
}
+ mlt_events_fire( this, "property-changed", name, NULL );
+
return error;
}
mlt_properties_do_mirror( this, name );
}
+ mlt_events_fire( this, "property-changed", name, NULL );
+
return error;
}
if ( property != NULL )
error = mlt_property_set_data( property, value, length, destroy, serialise );
+ mlt_events_fire( this, "property-changed", name, NULL );
+
return error;
}
fprintf( output, "%s=%s\n", list->name[ i ], mlt_properties_get( this, list->name[ i ] ) );
}
+void mlt_properties_debug( mlt_properties this, char *title, FILE *output )
+{
+ fprintf( stderr, "%s: ", title );
+ if ( this != NULL )
+ {
+ property_list *list = this->local;
+ int i = 0;
+ fprintf( output, "[ ref=%d", list->ref_count );
+ for ( i = 0; i < list->count; i ++ )
+ if ( mlt_properties_get( this, list->name[ i ] ) != NULL )
+ fprintf( output, ", %s=%s", list->name[ i ], mlt_properties_get( this, list->name[ i ] ) );
+ else
+ fprintf( output, ", %s=%p", list->name[ i ], mlt_properties_get_data( this, list->name[ i ], NULL ) );
+ fprintf( output, " ]" );
+ }
+ fprintf( stderr, "\n" );
+}
+
/** Close the list.
*/
void mlt_properties_close( mlt_properties this )
{
- if ( this != NULL )
+ if ( this != NULL && mlt_properties_dec_ref( this ) <= 0 )
{
- property_list *list = this->local;
- int index = 0;
-
- // Clean up names and values
- for ( index = list->count - 1; index >= 0; index -- )
+ if ( this->close != NULL )
{
- free( list->name[ index ] );
- mlt_property_close( list->value[ index ] );
+ this->close( this->close_object );
}
-
- // Clear up the list
- free( list->name );
- free( list->value );
- free( list );
-
- // Free this now if this has no child
- if ( this->child == NULL )
- free( this );
+ else
+ {
+ property_list *list = this->local;
+ int index = 0;
#ifdef _MLT_PROPERTY_CHECKS_
- // Increment destroyed count
- properties_destroyed ++;
+ // Show debug info
+ mlt_properties_debug( this, "Closing", stderr );
+
+ // Increment destroyed count
+ properties_destroyed ++;
- // Show current stats - these should match when the app is closed
- fprintf( stderr, "Created %d, destroyed %d\n", properties_created, properties_destroyed );
+ // Show current stats - these should match when the app is closed
+ fprintf( stderr, "Created %d, destroyed %d\n", properties_created, properties_destroyed );
#endif
+
+ // Clean up names and values
+ for ( index = list->count - 1; index >= 0; index -- )
+ {
+ free( list->name[ index ] );
+ mlt_property_close( list->value[ index ] );
+ }
+
+ // Clear up the list
+ free( list->name );
+ free( list->value );
+ free( list );
+
+ // Free this now if this has no child
+ if ( this->child == NULL )
+ free( this );
+ }
}
}
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