#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_ 2
+
#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
/** Load properties from a file.
*/
-mlt_properties mlt_properties_load( char *filename )
+mlt_properties mlt_properties_load( const char *filename )
{
// Construct a standalone properties object
mlt_properties this = mlt_properties_new( );
{
// 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 );
return this;
}
-static inline int generate_hash( char *name )
+static inline int generate_hash( const char *name )
{
int hash = 0;
int i = 1;
real producer.
*/
-static inline void mlt_properties_do_mirror( mlt_properties this, char *name )
+static inline void mlt_properties_do_mirror( mlt_properties this, const char *name )
{
property_list *list = this->local;
if ( list->mirror != NULL )
}
}
-/** Allow the specification of a mirror.
+/** 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;
+}
+
+/** Return the ref count of this object.
+*/
+
+int mlt_properties_ref_count( mlt_properties this )
+{
+ if ( this != NULL )
+ {
+ property_list *list = this->local;
+ return list->ref_count;
+ }
+ return 0;
+}
+
+/** Mirror properties set on 'this' to 'that'.
*/
void mlt_properties_mirror( mlt_properties this, mlt_properties that )
/** Pass all properties from 'that' that match the prefix to 'this' (excluding the prefix).
*/
-int mlt_properties_pass( mlt_properties this, mlt_properties that, char *prefix )
+int mlt_properties_pass( mlt_properties this, mlt_properties that, const char *prefix )
{
int count = mlt_properties_count( that );
int length = strlen( prefix );
return 0;
}
+
/** Locate a property by name
*/
-static inline mlt_property mlt_properties_find( mlt_properties this, char *name )
+static inline mlt_property mlt_properties_find( mlt_properties this, const char *name )
{
property_list *list = this->local;
mlt_property value = NULL;
/** Add a new property.
*/
-static mlt_property mlt_properties_add( mlt_properties this, char *name )
+static mlt_property mlt_properties_add( mlt_properties this, const char *name )
{
property_list *list = this->local;
int key = generate_hash( name );
if ( list->count == list->size )
{
list->size += 50;
- list->name = realloc( list->name, list->size * sizeof( char * ) );
+ list->name = realloc( list->name, list->size * sizeof( const char * ) );
list->value = realloc( list->value, list->size * sizeof( mlt_property ) );
}
/** Fetch a property by name - this includes add if not found.
*/
-static mlt_property mlt_properties_fetch( mlt_properties this, char *name )
+static mlt_property mlt_properties_fetch( mlt_properties this, const char *name )
{
// Try to find an existing property first
mlt_property property = mlt_properties_find( this, name );
return property;
}
+/** Pass property 'name' from 'that' to 'this'
+* Who to blame: Zach <zachary.drew@gmail.com>
+*/
+
+void mlt_properties_pass_property( mlt_properties this, mlt_properties that, const char *name )
+{
+ // Make sure the source property isn't null.
+ mlt_property that_prop = mlt_properties_find( that, name );
+ if( that_prop == NULL )
+ return;
+
+ mlt_property_pass( mlt_properties_fetch( this, name ), that_prop );
+}
+
+/** Pass all properties from 'that' to 'this' as found in comma seperated 'list'.
+* Who to blame: Zach <zachary.drew@gmail.com>
+*/
+
+int mlt_properties_pass_list( mlt_properties this, mlt_properties that, const char *list )
+{
+ char *props = strdup( list );
+ char *ptr = props;
+ char *delim = " ,\t\n"; // Any combination of spaces, commas, tabs, and newlines
+ int count, done = 0;
+
+ while( !done )
+ {
+ count = strcspn( ptr, delim );
+
+ if( ptr[count] == '\0' )
+ done = 1;
+ else
+ ptr[count] = '\0'; // Make it a real string
+
+ mlt_properties_pass_property( this, that, ptr );
+
+ ptr += count + 1;
+ ptr += strspn( ptr, delim );
+ }
+
+ free( props );
+
+ return 0;
+}
+
+
/** Set the property.
*/
-int mlt_properties_set( mlt_properties this, char *name, char *value )
+int mlt_properties_set( mlt_properties this, const char *name, const char *value )
{
int error = 1;
mlt_property property = mlt_properties_fetch( this, name );
// Set it if not NULL
- if ( property != NULL )
+ if ( property == NULL )
+ {
+ fprintf( stderr, "Whoops - %s not found (should never occur)\n", name );
+ }
+ else if ( value == NULL )
+ {
+ error = mlt_property_set_string( property, value );
+ mlt_properties_do_mirror( this, name );
+ }
+ else if ( *value != '@' )
{
error = mlt_property_set_string( property, value );
mlt_properties_do_mirror( this, name );
}
+ else if ( 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;
}
/** Set or default the property.
*/
-int mlt_properties_set_or_default( mlt_properties this, char *name, char *value, char *def )
+int mlt_properties_set_or_default( mlt_properties this, const char *name, const char *value, const char *def )
{
return mlt_properties_set( this, name, value == NULL ? def : value );
}
/** Get a string value by name.
*/
-char *mlt_properties_get( mlt_properties this, char *name )
+char *mlt_properties_get( mlt_properties this, const char *name )
{
mlt_property value = mlt_properties_find( this, name );
return value == NULL ? NULL : mlt_property_get_string( value );
/** Set a value by parsing a name=value string
*/
-int mlt_properties_parse( mlt_properties this, char *namevalue )
+int mlt_properties_parse( mlt_properties this, const char *namevalue )
{
char *name = strdup( namevalue );
char *value = NULL;
/** Get a value associated to the name.
*/
-int mlt_properties_get_int( mlt_properties this, char *name )
+int mlt_properties_get_int( mlt_properties this, const char *name )
{
mlt_property value = mlt_properties_find( this, name );
return value == NULL ? 0 : mlt_property_get_int( value );
/** Set a value associated to the name.
*/
-int mlt_properties_set_int( mlt_properties this, char *name, int value )
+int mlt_properties_set_int( mlt_properties this, const char *name, int value )
{
int error = 1;
mlt_properties_do_mirror( this, name );
}
+ mlt_events_fire( this, "property-changed", name, NULL );
+
+ return error;
+}
+
+/** Get a value associated to the name.
+*/
+
+int64_t mlt_properties_get_int64( mlt_properties this, const char *name )
+{
+ mlt_property value = mlt_properties_find( this, name );
+ return value == NULL ? 0 : mlt_property_get_int64( value );
+}
+
+/** Set a value associated to the name.
+*/
+
+int mlt_properties_set_int64( mlt_properties this, const char *name, int64_t value )
+{
+ int error = 1;
+
+ // Fetch the property to work with
+ mlt_property property = mlt_properties_fetch( this, name );
+
+ // Set it if not NULL
+ if ( property != NULL )
+ {
+ error = mlt_property_set_int64( property, value );
+ mlt_properties_do_mirror( this, name );
+ }
+
+ mlt_events_fire( this, "property-changed", name, NULL );
+
return error;
}
/** Get a value associated to the name.
*/
-double mlt_properties_get_double( mlt_properties this, char *name )
+double mlt_properties_get_double( mlt_properties this, const char *name )
{
mlt_property value = mlt_properties_find( this, name );
return value == NULL ? 0 : mlt_property_get_double( value );
/** Set a value associated to the name.
*/
-int mlt_properties_set_double( mlt_properties this, char *name, double value )
+int mlt_properties_set_double( mlt_properties this, const char *name, double value )
{
int error = 1;
mlt_properties_do_mirror( this, name );
}
+ mlt_events_fire( this, "property-changed", name, NULL );
+
return error;
}
/** Get a value associated to the name.
*/
-mlt_position mlt_properties_get_position( mlt_properties this, char *name )
+mlt_position mlt_properties_get_position( mlt_properties this, const char *name )
{
mlt_property value = mlt_properties_find( this, name );
return value == NULL ? 0 : mlt_property_get_position( value );
/** Set a value associated to the name.
*/
-int mlt_properties_set_position( mlt_properties this, char *name, mlt_position value )
+int mlt_properties_set_position( mlt_properties this, const char *name, mlt_position value )
{
int error = 1;
mlt_properties_do_mirror( this, name );
}
+ mlt_events_fire( this, "property-changed", name, NULL );
+
return error;
}
/** Get a value associated to the name.
*/
-void *mlt_properties_get_data( mlt_properties this, char *name, int *length )
+void *mlt_properties_get_data( mlt_properties this, const char *name, int *length )
{
mlt_property value = mlt_properties_find( this, name );
return value == NULL ? NULL : mlt_property_get_data( value, length );
/** Set a value associated to the name.
*/
-int mlt_properties_set_data( mlt_properties this, char *name, void *value, int length, mlt_destructor destroy, mlt_serialiser serialise )
+int mlt_properties_set_data( mlt_properties this, const char *name, void *value, int length, mlt_destructor destroy, mlt_serialiser serialise )
{
int error = 1;
if ( property != NULL )
error = mlt_property_set_data( property, value, length, destroy, serialise );
+ mlt_events_fire( this, "property-changed", name, NULL );
+
return error;
}
/** Rename a property.
*/
-int mlt_properties_rename( mlt_properties this, char *source, char *dest )
+int mlt_properties_rename( mlt_properties this, const char *source, const char *dest )
{
mlt_property value = mlt_properties_find( this, dest );
fprintf( output, "%s=%s\n", list->name[ i ], mlt_properties_get( this, list->name[ i ] ) );
}
+void mlt_properties_debug( mlt_properties this, const char *title, FILE *output )
+{
+ fprintf( output, "%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( output, "\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 );
}
+ else
+ {
+ property_list *list = this->local;
+ int index = 0;
- // 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 );
+#if _MLT_PROPERTY_CHECKS_ == 1
+ // Show debug info
+ mlt_properties_debug( this, "Closing", stderr );
+#endif
#ifdef _MLT_PROPERTY_CHECKS_
- // Increment destroyed count
- properties_destroyed ++;
+ // 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 );
+ }
}
}
projects / melted / blobdiff