-/*
- * mlt_properties.c -- base properties class
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
- * Author: Charles Yates <charles.yates@pandora.be>
+/**
+ * \file mlt_properties.c
+ * \brief Properties class definition
+ * \see mlt_properties_s
+ *
+ * Copyright (C) 2003-2013 Ushodaya Enterprises Limited
+ * \author Charles Yates <charles.yates@pandora.be>
+ * \author Dan Dennedy <dan@dennedy.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#include "config.h"
+// For strtod_l
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
#include "mlt_properties.h"
#include "mlt_property.h"
+#include "mlt_deque.h"
+#include "mlt_log.h"
+#include "mlt_factory.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
-
+#include <stdarg.h>
+#include <pthread.h>
#include <sys/types.h>
#include <dirent.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <locale.h>
+#include <float.h>
-/* ---------------- // Private Implementation // ---------------- */
+#define PRESETS_DIR "/presets"
-/** Private implementation of the property list.
-*/
+/** \brief private implementation of the property list */
typedef struct
{
int size;
mlt_properties mirror;
int ref_count;
+ pthread_mutex_t mutex;
+ locale_t locale;
}
property_list;
-/** Memory leak checks.
-*/
+/* Memory leak checks */
//#define _MLT_PROPERTY_CHECKS_ 2
-
#ifdef _MLT_PROPERTY_CHECKS_
static int properties_created = 0;
static int properties_destroyed = 0;
#endif
-/** Basic implementation.
-*/
+/** Initialize a properties object that was already allocated.
+ *
+ * This does allocate its ::property_list, and it adds a reference count.
+ * \public \memberof mlt_properties_s
+ * \param self the properties structure to initialize
+ * \param child an opaque pointer to a subclass object
+ * \return true if failed
+ */
-int mlt_properties_init( mlt_properties this, void *child )
+int mlt_properties_init( mlt_properties self, void *child )
{
- if ( this != NULL )
+ if ( self != NULL )
{
#ifdef _MLT_PROPERTY_CHECKS_
// Increment number of properties created
#endif
// NULL all methods
- memset( this, 0, sizeof( struct mlt_properties_s ) );
+ memset( self, 0, sizeof( struct mlt_properties_s ) );
// Assign the child of the object
- this->child = child;
+ self->child = child;
// Allocate the local structure
- this->local = calloc( sizeof( property_list ), 1 );
+ self->local = calloc( 1, sizeof( property_list ) );
// Increment the ref count
- ( ( property_list * )this->local )->ref_count = 1;
+ ( ( property_list * )self->local )->ref_count = 1;
+ pthread_mutex_init( &( ( property_list * )self->local )->mutex, NULL );;
}
// Check that initialisation was successful
- return this != NULL && this->local == NULL;
+ return self != NULL && self->local == NULL;
}
-/** Constructor for stand alone object.
-*/
+/** Create a properties object.
+ *
+ * This allocates the properties structure and calls mlt_properties_init() on it.
+ * Free the properties object with mlt_properties_close().
+ * \public \memberof mlt_properties_s
+ * \return a new properties object
+ */
mlt_properties mlt_properties_new( )
{
// Construct a standalone properties object
- mlt_properties this = calloc( sizeof( struct mlt_properties_s ), 1 );
+ mlt_properties self = calloc( 1, sizeof( struct mlt_properties_s ) );
- // Initialise this
- mlt_properties_init( this, NULL );
+ // Initialise self
+ mlt_properties_init( self, NULL );
// Return the pointer
- return this;
+ return self;
}
-/** Load properties from a file.
-*/
+/** Set the numeric locale used for string/double conversions.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param locale the locale name
+ * \return true if error
+ */
-mlt_properties mlt_properties_load( const char *filename )
+int mlt_properties_set_lcnumeric( mlt_properties self, const char *locale )
{
- // Construct a standalone properties object
- mlt_properties this = mlt_properties_new( );
+ int error = 0;
- if ( this != NULL )
+ if ( self && locale )
{
- // Open the file
- FILE *file = fopen( filename, "r" );
+ property_list *list = self->local;
- // Load contents of file
- if ( file != NULL )
- {
- // Temp string
- char temp[ 1024 ];
- char last[ 1024 ] = "";
+#if defined(__linux__) || defined(__DARWIN__)
+ if ( list->locale )
+ freelocale( list->locale );
+ list->locale = newlocale( LC_NUMERIC_MASK, locale, NULL );
+#endif
+ error = list->locale == NULL;
+ }
+ else
+ error = 1;
- // Read each string from the file
- while( fgets( temp, 1024, file ) )
- {
- // Chomp the string
- temp[ strlen( temp ) - 1 ] = '\0';
+ return error;
+}
- // 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';
- }
+/** Get the numeric locale for this properties object.
+ *
+ * Do not free the result.
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \return the locale name if this properties has a specific locale it is using, NULL otherwise
+ */
+
+const char* mlt_properties_get_lcnumeric( mlt_properties self )
+{
+ property_list *list = self->local;
+ const char *result = NULL;
+
+ if ( list->locale )
+ {
+#if defined(__DARWIN__)
+ result = querylocale( LC_NUMERIC, list->locale );
+#elif defined(__linux__)
+ result = list->locale->__names[ LC_NUMERIC ];
+#else
+ // TODO: not yet sure what to do on other platforms
+#endif
+ }
+ return result;
+}
+
+static int load_properties( mlt_properties self, const char *filename )
+{
+ // Open the file
+ FILE *file = fopen( filename, "r" );
+
+ // Load contents of file
+ if ( file != NULL )
+ {
+ // Temp string
+ char temp[ 1024 ];
+ char last[ 1024 ] = "";
- // Parse and set the property
- if ( strcmp( temp, "" ) && temp[ 0 ] != '#' )
- mlt_properties_parse( this, temp );
+ // Read each string from the file
+ while( fgets( temp, 1024, file ) )
+ {
+ // Chomp the new line character from the string
+ int x = strlen( temp ) - 1;
+ if ( temp[x] == '\n' || temp[x] == '\r' )
+ temp[x] = '\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';
}
- // Close the file
- fclose( file );
+ // Parse and set the property
+ if ( strcmp( temp, "" ) && temp[ 0 ] != '#' )
+ mlt_properties_parse( self, temp );
}
+
+ // Close the file
+ fclose( file );
}
+ return file? 0 : errno;
+}
+
+/** Create a properties object by reading a .properties text file.
+ *
+ * Free the properties object with mlt_properties_close().
+ * \deprecated Please start using mlt_properties_parse_yaml().
+ * \public \memberof mlt_properties_s
+ * \param filename the absolute file name
+ * \return a new properties object
+ */
+
+mlt_properties mlt_properties_load( const char *filename )
+{
+ // Construct a standalone properties object
+ mlt_properties self = mlt_properties_new( );
+
+ if ( self != NULL )
+ load_properties( self, filename );
// Return the pointer
- return this;
+ return self;
+}
+
+/** Set properties from a preset.
+ *
+ * Presets are typically installed to $prefix/share/mlt/presets/{type}/{service}/[{profile}/]{name}.
+ * For example, "/usr/share/mlt/presets/consumer/avformat/dv_ntsc_wide/DVD"
+ * could be an encoding preset for a widescreen NTSC DVD Video.
+ * Do not specify the type and service in the preset name parameter; these are
+ * inferred automatically from the service to which you are applying the preset.
+ * Using the example above and assuming you are calling this function on the
+ * avformat consumer, the name passed to the function should simply be DVD.
+ * Note that the profile portion of the path is optional, but a profile-specific
+ * preset with the same name as a more generic one is given a higher priority.
+ * \todo Look in a user-specific location - somewhere in the home directory.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the name of a preset in a well-known location or the explicit path
+ * \return true if error
+ */
+
+int mlt_properties_preset( mlt_properties self, const char *name )
+{
+ struct stat stat_buff;
+
+ // validate input
+ if ( !( self && name && strlen( name ) ) )
+ return 1;
+
+ // See if name is an explicit file
+ if ( ! stat( name, &stat_buff ) )
+ {
+ return load_properties( self, name );
+ }
+ else
+ {
+ // Look for profile-specific preset before a generic one.
+ char *data = getenv( "MLT_PRESETS_PATH" );
+ const char *type = mlt_properties_get( self, "mlt_type" );
+ const char *service = mlt_properties_get( self, "mlt_service" );
+ const char *profile = mlt_environment( "MLT_PROFILE" );
+ int error = 0;
+
+ if ( data )
+ {
+ data = strdup( data );
+ }
+ else
+ {
+ data = malloc( strlen( mlt_environment( "MLT_DATA" ) ) + strlen( PRESETS_DIR ) + 1 );
+ strcpy( data, mlt_environment( "MLT_DATA" ) );
+ strcat( data, PRESETS_DIR );
+ }
+ if ( data && type && service )
+ {
+ char *path = malloc( 5 + strlen(name) + strlen(data) + strlen(type) + strlen(service) + ( profile? strlen(profile) : 0 ) );
+ sprintf( path, "%s/%s/%s/%s/%s", data, type, service, profile, name );
+ if ( load_properties( self, path ) )
+ {
+ sprintf( path, "%s/%s/%s/%s", data, type, service, name );
+ error = load_properties( self, path );
+ }
+ free( path );
+ }
+ else
+ {
+ error = 1;
+ }
+ free( data );
+ return error;
+ }
}
+/** Generate a hash key.
+ *
+ * \private \memberof mlt_properties_s
+ * \param name a string
+ * \return an integer
+ */
+
static inline int generate_hash( const char *name )
{
- int hash = 0;
- int i = 1;
+ unsigned int hash = 5381;
while ( *name )
- hash = ( hash + ( i ++ * ( *name ++ & 31 ) ) ) % 199;
- return hash;
+ hash = hash * 33 + (unsigned int) ( *name ++ );
+ return hash % 199;
}
-/** Special case - when a container (such as fezzik) is protecting another
- producer, we need to ensure that properties are passed through to the
- real producer.
-*/
+/** Copy a serializable property to a properties list that is mirroring this one.
+ *
+ * Special case - when a container (such as loader) is protecting another
+ * producer, we need to ensure that properties are passed through to the
+ * real producer.
+ * \private \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the name of the property to copy
+ */
-static inline void mlt_properties_do_mirror( mlt_properties this, const char *name )
+static inline void mlt_properties_do_mirror( mlt_properties self, const char *name )
{
- property_list *list = this->local;
- if ( list->mirror != NULL )
+ if ( !self ) return;
+ property_list *list = self->local;
+ if ( list->mirror != NULL )
{
- char *value = mlt_properties_get( this, name );
+ char *value = mlt_properties_get( self, name );
if ( value != NULL )
mlt_properties_set( list->mirror, name, value );
}
}
-/** Maintain ref count to allow multiple uses of an mlt object.
-*/
+/** Increment the reference count.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \return the new reference count
+ */
-int mlt_properties_inc_ref( mlt_properties this )
+int mlt_properties_inc_ref( mlt_properties self )
{
- if ( this != NULL )
+ int result = 0;
+ if ( self != NULL )
{
- property_list *list = this->local;
- return ++ list->ref_count;
+ property_list *list = self->local;
+ pthread_mutex_lock( &list->mutex );
+ result = ++ list->ref_count;
+ pthread_mutex_unlock( &list->mutex );
}
- return 0;
+ return result;
}
-/** Maintain ref count to allow multiple uses of an mlt object.
-*/
+/** Decrement the reference count.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \return the new reference count
+ */
-int mlt_properties_dec_ref( mlt_properties this )
+int mlt_properties_dec_ref( mlt_properties self )
{
- if ( this != NULL )
+ int result = 0;
+ if ( self != NULL )
{
- property_list *list = this->local;
- return -- list->ref_count;
+ property_list *list = self->local;
+ pthread_mutex_lock( &list->mutex );
+ result = -- list->ref_count;
+ pthread_mutex_unlock( &list->mutex );
}
- return 0;
+ return result;
}
-/** Return the ref count of this object.
-*/
+/** Get the reference count.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \return the current reference count
+ */
-int mlt_properties_ref_count( mlt_properties this )
+int mlt_properties_ref_count( mlt_properties self )
{
- if ( this != NULL )
+ if ( self != NULL )
{
- property_list *list = this->local;
+ property_list *list = self->local;
return list->ref_count;
}
return 0;
}
-/** Mirror properties set on 'this' to 'that'.
-*/
+/** Set a properties list to be a mirror copy of another.
+ *
+ * Note that this does not copy all existing properties. Rather, you must
+ * call this before setting the properties that you wish to copy.
+ * \public \memberof mlt_properties_s
+ * \param that the properties which will receive copies of the properties as they are set.
+ * \param self the properties to mirror
+ */
-void mlt_properties_mirror( mlt_properties this, mlt_properties that )
+void mlt_properties_mirror( mlt_properties self, mlt_properties that )
{
- property_list *list = this->local;
+ if ( !self ) return;
+ property_list *list = self->local;
list->mirror = that;
}
-/** Inherit all serialisable properties from that into this.
-*/
+/** Copy all serializable properties to another properties list.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self The properties to copy to
+ * \param that The properties to copy from
+ * \return true if error
+ */
-int mlt_properties_inherit( mlt_properties this, mlt_properties that )
+int mlt_properties_inherit( mlt_properties self, mlt_properties that )
{
+ if ( !self || !that ) return 1;
int count = mlt_properties_count( that );
int i = 0;
for ( i = 0; i < count; i ++ )
if ( value != NULL )
{
char *name = mlt_properties_get_name( that, i );
- mlt_properties_set( this, name, value );
+ mlt_properties_set( self, name, value );
}
}
return 0;
}
-/** Pass all properties from 'that' that match the prefix to 'this' (excluding the prefix).
-*/
+/** Pass all serializable properties that match a prefix to another properties object
+ *
+ * \warning The prefix is stripped from the name when it is set on the \p self properties list!
+ * For example a property named "foo.bar" will match prefix "foo.", but the property
+ * will be named simply "bar" on the receiving properties object.
+ * \public \memberof mlt_properties_s
+ * \param self the properties to copy to
+ * \param that The properties to copy from
+ * \param prefix the property names to match (required)
+ * \return true if error
+ */
-int mlt_properties_pass( mlt_properties this, mlt_properties that, const char *prefix )
+int mlt_properties_pass( mlt_properties self, mlt_properties that, const char *prefix )
{
+ if ( !self || !that ) return 1;
int count = mlt_properties_count( that );
int length = strlen( prefix );
int i = 0;
{
char *value = mlt_properties_get_value( that, i );
if ( value != NULL )
- mlt_properties_set( this, name + length, value );
+ mlt_properties_set( self, name + length, value );
}
}
return 0;
}
-/** Locate a property by name
-*/
+/** Locate a property by name.
+ *
+ * \private \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to lookup by name
+ * \return the property or NULL for failure
+ */
-static inline mlt_property mlt_properties_find( mlt_properties this, const char *name )
+static inline mlt_property mlt_properties_find( mlt_properties self, const char *name )
{
- property_list *list = this->local;
+ if ( !self || !name ) return NULL;
+ property_list *list = self->local;
mlt_property value = NULL;
int key = generate_hash( name );
- int i = list->hash[ key ] - 1;
+ mlt_properties_lock( self );
+
+ int i = list->hash[ key ] - 1;
if ( i >= 0 )
{
// Check if we're hashed
if ( list->count > 0 &&
- name[ 0 ] == list->name[ i ][ 0 ] &&
+ name[ 0 ] == list->name[ i ][ 0 ] &&
!strcmp( list->name[ i ], name ) )
value = list->value[ i ];
- // Locate the item
+ // Locate the item
for ( i = list->count - 1; value == NULL && i >= 0; i -- )
if ( name[ 0 ] == list->name[ i ][ 0 ] && !strcmp( list->name[ i ], name ) )
value = list->value[ i ];
}
+ mlt_properties_unlock( self );
return value;
}
/** Add a new property.
-*/
+ *
+ * \private \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the name of the new property
+ * \return the new property
+ */
-static mlt_property mlt_properties_add( mlt_properties this, const char *name )
+static mlt_property mlt_properties_add( mlt_properties self, const char *name )
{
- property_list *list = this->local;
+ property_list *list = self->local;
int key = generate_hash( name );
+ mlt_property result;
+
+ mlt_properties_lock( self );
// Check that we have space and resize if necessary
if ( list->count == list->size )
list->hash[ key ] = list->count + 1;
// Return and increment count accordingly
- return list->value[ list->count ++ ];
+ result = list->value[ list->count ++ ];
+
+ mlt_properties_unlock( self );
+
+ return result;
}
-/** Fetch a property by name - this includes add if not found.
-*/
+/** Fetch a property by name and add one if not found.
+ *
+ * \private \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to lookup or add
+ * \return the property
+ */
-static mlt_property mlt_properties_fetch( mlt_properties this, const char *name )
+static mlt_property mlt_properties_fetch( mlt_properties self, const char *name )
{
// Try to find an existing property first
- mlt_property property = mlt_properties_find( this, name );
+ mlt_property property = mlt_properties_find( self, name );
// If it wasn't found, create one
if ( property == NULL )
- property = mlt_properties_add( this, name );
+ property = mlt_properties_add( self, name );
// Return the property
return property;
}
-/** Pass property 'name' from 'that' to 'this'
-* Who to blame: Zach <zachary.drew@gmail.com>
-*/
+/** Copy a property to another properties list.
+ *
+ * \public \memberof mlt_properties_s
+ * \author Zach <zachary.drew@gmail.com>
+ * \param self the properties to copy to
+ * \param that the properties to copy from
+ * \param name the name of the property to copy
+ */
-void mlt_properties_pass_property( mlt_properties this, mlt_properties that, const char *name )
+void mlt_properties_pass_property( mlt_properties self, 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 );
+ mlt_property_pass( mlt_properties_fetch( self, name ), that_prop );
}
-/** Pass all properties from 'that' to 'this' as found in comma seperated 'list'.
-* Who to blame: Zach <zachary.drew@gmail.com>
-*/
+/** Copy all properties specified in a comma-separated list to another properties list.
+ *
+ * White space is also a delimiter.
+ * \public \memberof mlt_properties_s
+ * \author Zach <zachary.drew@gmail.com>
+ * \param self the properties to copy to
+ * \param that the properties to copy from
+ * \param list a delimited list of property names
+ * \return true if error
+ */
-int mlt_properties_pass_list( mlt_properties this, mlt_properties that, const char *list )
+
+int mlt_properties_pass_list( mlt_properties self, mlt_properties that, const char *list )
{
+ if ( !self || !that || !list ) return 1;
char *props = strdup( list );
char *ptr = props;
- char *delim = " ,\t\n"; // Any combination of spaces, commas, tabs, and newlines
+ const char *delim = " ,\t\n"; // Any combination of spaces, commas, tabs, and newlines
int count, done = 0;
while( !done )
else
ptr[count] = '\0'; // Make it a real string
- mlt_properties_pass_property( this, that, ptr );
+ mlt_properties_pass_property( self, that, ptr );
ptr += count + 1;
- ptr += strspn( ptr, delim );
+ if ( !done )
+ ptr += strspn( ptr, delim );
}
free( props );
}
-/** Set the property.
-*/
+/** Set a property to a string.
+ *
+ * The property name "properties" is reserved to load the preset in \p value.
+ * When the value begins with '@' then it is interpreted as a very simple math
+ * expression containing only the +, -, *, and / operators.
+ * The event "property-changed" is fired after the property has been set.
+ *
+ * This makes a copy of the string value you supply.
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to set
+ * \param value the property's new value
+ * \return true if error
+ */
-int mlt_properties_set( mlt_properties this, const char *name, const char *value )
+int mlt_properties_set( mlt_properties self, const char *name, const char *value )
{
int error = 1;
+ if ( !self || !name ) return error;
+
// Fetch the property to work with
- mlt_property property = mlt_properties_fetch( this, name );
+ mlt_property property = mlt_properties_fetch( self, name );
// Set it if not NULL
if ( property == NULL )
{
- fprintf( stderr, "Whoops - %s not found (should never occur)\n", name );
+ mlt_log( NULL, MLT_LOG_FATAL, "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 );
+ mlt_properties_do_mirror( self, name );
}
else if ( *value != '@' )
{
error = mlt_property_set_string( property, value );
- mlt_properties_do_mirror( this, name );
+ mlt_properties_do_mirror( self, name );
+ if ( !strcmp( name, "properties" ) )
+ mlt_properties_preset( self, value );
}
else if ( value[ 0 ] == '@' )
{
- int total = 0;
- int current = 0;
+ double total = 0;
+ double current = 0;
char id[ 255 ];
char op = '+';
// Determine the value
if ( isdigit( id[ 0 ] ) )
- current = atof( id );
+ {
+#if defined(__GLIBC__) || defined(__DARWIN__)
+ property_list *list = self->local;
+ if ( list->locale )
+ current = strtod_l( id, NULL, list->locale );
+ else
+#endif
+ current = strtod( id, NULL );
+ }
else
- current = mlt_properties_get_int( this, id );
+ {
+ current = mlt_properties_get_double( self, id );
+ }
// Apply the operation
switch( op )
total *= current;
break;
case '/':
- total /= current;
+ total = total / current;
break;
}
op = *value != '\0' ? *value ++ : ' ';
}
- error = mlt_property_set_int( property, total );
- mlt_properties_do_mirror( this, name );
+ error = mlt_property_set_double( property, total );
+ mlt_properties_do_mirror( self, name );
}
- mlt_events_fire( this, "property-changed", name, NULL );
+ mlt_events_fire( self, "property-changed", name, NULL );
return error;
}
-/** Set or default the property.
-*/
+/** Set or default a property to a string.
+ *
+ * This makes a copy of the string value you supply.
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to set
+ * \param value the string value to set or NULL to use the default
+ * \param def the default string if value is NULL
+ * \return true if error
+ */
-int mlt_properties_set_or_default( mlt_properties this, const char *name, const char *value, const char *def )
+int mlt_properties_set_or_default( mlt_properties self, const char *name, const char *value, const char *def )
{
- return mlt_properties_set( this, name, value == NULL ? def : value );
+ return mlt_properties_set( self, name, value == NULL ? def : value );
}
/** Get a string value by name.
-*/
+ *
+ * Do not free the returned string. It's lifetime is controlled by the property
+ * and this properties object.
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to get
+ * \return the property's string value or NULL if it does not exist
+ */
-char *mlt_properties_get( mlt_properties this, const char *name )
+char *mlt_properties_get( mlt_properties self, const char *name )
{
- mlt_property value = mlt_properties_find( this, name );
- return value == NULL ? NULL : mlt_property_get_string( value );
+ char *result = NULL;
+ mlt_property value = mlt_properties_find( self, name );
+ if ( value )
+ {
+ property_list *list = self->local;
+ result = mlt_property_get_string_l( value, list->locale );
+ }
+ return result;
}
-/** Get a name by index.
-*/
+/** Get a property name by index.
+ *
+ * Do not free the returned string.
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param index the numeric index of the property
+ * \return the name of the property or NULL if index is out of range
+ */
-char *mlt_properties_get_name( mlt_properties this, int index )
+char *mlt_properties_get_name( mlt_properties self, int index )
{
- property_list *list = this->local;
+ if ( !self ) return NULL;
+ property_list *list = self->local;
if ( index >= 0 && index < list->count )
return list->name[ index ];
return NULL;
}
-/** Get a string value by index.
-*/
+/** Get a property's string value by index.
+ *
+ * Do not free the returned string.
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param index the numeric index of the property
+ * \return the property value as a string or NULL if the index is out of range
+ */
-char *mlt_properties_get_value( mlt_properties this, int index )
+char *mlt_properties_get_value( mlt_properties self, int index )
{
- property_list *list = this->local;
+ if ( !self ) return NULL;
+ property_list *list = self->local;
if ( index >= 0 && index < list->count )
- return mlt_property_get_string( list->value[ index ] );
+ return mlt_property_get_string_l( list->value[ index ], list->locale );
return NULL;
}
/** Get a data value by index.
-*/
+ *
+ * Do not free the returned pointer if you supplied a destructor function when you
+ * set this property.
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param index the numeric index of the property
+ * \param[out] size the size of the binary data in bytes or NULL if the index is out of range
+ */
-void *mlt_properties_get_data_at( mlt_properties this, int index, int *size )
+void *mlt_properties_get_data_at( mlt_properties self, int index, int *size )
{
- property_list *list = this->local;
+ if ( !self ) return NULL;
+ property_list *list = self->local;
if ( index >= 0 && index < list->count )
return mlt_property_get_data( list->value[ index ], size );
return NULL;
}
/** Return the number of items in the list.
-*/
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \return the number of property objects or -1 if error
+ */
-int mlt_properties_count( mlt_properties this )
+int mlt_properties_count( mlt_properties self )
{
- property_list *list = this->local;
+ if ( !self ) return -1;
+ property_list *list = self->local;
return list->count;
}
-/** Set a value by parsing a name=value string
-*/
+/** Set a value by parsing a name=value string.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param namevalue a string containing name and value delimited by '='
+ * \return true if there was an error
+ */
-int mlt_properties_parse( mlt_properties this, const char *namevalue )
+int mlt_properties_parse( mlt_properties self, const char *namevalue )
{
+ if ( !self ) return 1;
char *name = strdup( namevalue );
char *value = NULL;
int error = 0;
value = strdup( "" );
}
- error = mlt_properties_set( this, name, value );
+ error = mlt_properties_set( self, name, value );
free( name );
free( value );
return error;
}
-/** Get a value associated to the name.
-*/
+/** Get an integer associated to the name.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to get
+ * \return The integer value, 0 if not found (which may also be a legitimate value)
+ */
-int mlt_properties_get_int( mlt_properties this, const char *name )
+int mlt_properties_get_int( mlt_properties self, const char *name )
{
- mlt_property value = mlt_properties_find( this, name );
- return value == NULL ? 0 : mlt_property_get_int( value );
+ int result = 0;
+ mlt_property value = mlt_properties_find( self, name );
+ if ( value )
+ {
+ mlt_profile profile = mlt_properties_get_data( self, "_profile", NULL );
+ double fps = mlt_profile_fps( profile );
+ property_list *list = self->local;
+ result = mlt_property_get_int( value, fps, list->locale );
+ }
+ return result;
}
-/** Set a value associated to the name.
-*/
+/** Set a property to an integer value.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to set
+ * \param value the integer
+ * \return true if error
+ */
-int mlt_properties_set_int( mlt_properties this, const char *name, int value )
+int mlt_properties_set_int( mlt_properties self, const char *name, int value )
{
int error = 1;
+ if ( !self || !name ) return error;
+
// Fetch the property to work with
- mlt_property property = mlt_properties_fetch( this, name );
+ mlt_property property = mlt_properties_fetch( self, name );
// Set it if not NULL
if ( property != NULL )
{
error = mlt_property_set_int( property, value );
- mlt_properties_do_mirror( this, name );
+ mlt_properties_do_mirror( self, name );
}
- mlt_events_fire( this, "property-changed", name, NULL );
+ mlt_events_fire( self, "property-changed", name, NULL );
return error;
}
-/** Get a value associated to the name.
-*/
+/** Get a 64-bit integer associated to the name.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to get
+ * \return the integer value, 0 if not found (which may also be a legitimate value)
+ */
-int64_t mlt_properties_get_int64( mlt_properties this, const char *name )
+int64_t mlt_properties_get_int64( mlt_properties self, const char *name )
{
- mlt_property value = mlt_properties_find( this, name );
+ mlt_property value = mlt_properties_find( self, name );
return value == NULL ? 0 : mlt_property_get_int64( value );
}
-/** Set a value associated to the name.
-*/
+/** Set a property to a 64-bit integer value.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to set
+ * \param value the integer
+ * \return true if error
+ */
-int mlt_properties_set_int64( mlt_properties this, const char *name, int64_t value )
+int mlt_properties_set_int64( mlt_properties self, const char *name, int64_t value )
{
int error = 1;
+ if ( !self || !name ) return error;
+
// Fetch the property to work with
- mlt_property property = mlt_properties_fetch( this, name );
+ mlt_property property = mlt_properties_fetch( self, name );
// Set it if not NULL
if ( property != NULL )
{
error = mlt_property_set_int64( property, value );
- mlt_properties_do_mirror( this, name );
+ mlt_properties_do_mirror( self, name );
}
- mlt_events_fire( this, "property-changed", name, NULL );
+ mlt_events_fire( self, "property-changed", name, NULL );
return error;
}
-/** Get a value associated to the name.
-*/
+/** Get a floating point value associated to the name.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to get
+ * \return the floating point, 0 if not found (which may also be a legitimate value)
+ */
-double mlt_properties_get_double( mlt_properties this, const char *name )
+double mlt_properties_get_double( mlt_properties self, const char *name )
{
- mlt_property value = mlt_properties_find( this, name );
- return value == NULL ? 0 : mlt_property_get_double( value );
+ double result = 0;
+ mlt_property value = mlt_properties_find( self, name );
+ if ( value )
+ {
+ mlt_profile profile = mlt_properties_get_data( self, "_profile", NULL );
+ double fps = mlt_profile_fps( profile );
+ property_list *list = self->local;
+ result = mlt_property_get_double( value, fps, list->locale );
+ }
+ return result;
}
-/** Set a value associated to the name.
-*/
+/** Set a property to a floating point value.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to set
+ * \param value the floating point value
+ * \return true if error
+ */
-int mlt_properties_set_double( mlt_properties this, const char *name, double value )
+int mlt_properties_set_double( mlt_properties self, const char *name, double value )
{
int error = 1;
+ if ( !self || !name ) return error;
+
// Fetch the property to work with
- mlt_property property = mlt_properties_fetch( this, name );
+ mlt_property property = mlt_properties_fetch( self, name );
// Set it if not NULL
if ( property != NULL )
{
error = mlt_property_set_double( property, value );
- mlt_properties_do_mirror( this, name );
+ mlt_properties_do_mirror( self, name );
}
- mlt_events_fire( this, "property-changed", name, NULL );
+ mlt_events_fire( self, "property-changed", name, NULL );
return error;
}
-/** Get a value associated to the name.
-*/
+/** Get a position value associated to the name.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to get
+ * \return the position, 0 if not found (which may also be a legitimate value)
+ */
-mlt_position mlt_properties_get_position( mlt_properties this, const char *name )
+mlt_position mlt_properties_get_position( mlt_properties self, const char *name )
{
- mlt_property value = mlt_properties_find( this, name );
- return value == NULL ? 0 : mlt_property_get_position( value );
+ mlt_position result = 0;
+ mlt_property value = mlt_properties_find( self, name );
+ if ( value )
+ {
+ mlt_profile profile = mlt_properties_get_data( self, "_profile", NULL );
+ double fps = mlt_profile_fps( profile );
+ property_list *list = self->local;
+ result = mlt_property_get_position( value, fps, list->locale );
+ }
+ return result;
}
-/** Set a value associated to the name.
-*/
+/** Set a property to a position value.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to get
+ * \param value the position
+ * \return true if error
+ */
-int mlt_properties_set_position( mlt_properties this, const char *name, mlt_position value )
+int mlt_properties_set_position( mlt_properties self, const char *name, mlt_position value )
{
int error = 1;
+ if ( !self || !name ) return error;
+
// Fetch the property to work with
- mlt_property property = mlt_properties_fetch( this, name );
+ mlt_property property = mlt_properties_fetch( self, name );
// Set it if not NULL
if ( property != NULL )
{
error = mlt_property_set_position( property, value );
- mlt_properties_do_mirror( this, name );
+ mlt_properties_do_mirror( self, name );
}
- mlt_events_fire( this, "property-changed", name, NULL );
+ mlt_events_fire( self, "property-changed", name, NULL );
return error;
}
-/** Get a value associated to the name.
-*/
+/** Get a binary data value associated to the name.
+ *
+ * Do not free the returned pointer if you supplied a destructor function
+ * when you set this property.
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to get
+ * \param[out] length The size of the binary data in bytes, if available (often it is not, you should know)
+ */
-void *mlt_properties_get_data( mlt_properties this, const char *name, int *length )
+void *mlt_properties_get_data( mlt_properties self, const char *name, int *length )
{
- mlt_property value = mlt_properties_find( this, name );
+ mlt_property value = mlt_properties_find( self, name );
return value == NULL ? NULL : mlt_property_get_data( value, length );
}
-/** Set a value associated to the name.
-*/
+/** Store binary data as a property.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to set
+ * \param value an opaque pointer to binary data
+ * \param length the size of the binary data in bytes (optional)
+ * \param destroy a function to deallocate the binary data when the property is closed (optional)
+ * \param serialise a function that can serialize the binary data as text (optional)
+ * \return true if error
+ */
-int mlt_properties_set_data( mlt_properties this, const char *name, void *value, int length, mlt_destructor destroy, mlt_serialiser serialise )
+int mlt_properties_set_data( mlt_properties self, const char *name, void *value, int length, mlt_destructor destroy, mlt_serialiser serialise )
{
int error = 1;
+ if ( !self || !name ) return error;
+
// Fetch the property to work with
- mlt_property property = mlt_properties_fetch( this, name );
+ mlt_property property = mlt_properties_fetch( self, name );
// Set it if not NULL
if ( property != NULL )
error = mlt_property_set_data( property, value, length, destroy, serialise );
- mlt_events_fire( this, "property-changed", name, NULL );
+ mlt_events_fire( self, "property-changed", name, NULL );
return error;
}
/** Rename a property.
-*/
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param source the property to rename
+ * \param dest the new name
+ * \return true if the name is already in use
+ */
-int mlt_properties_rename( mlt_properties this, const char *source, const char *dest )
+int mlt_properties_rename( mlt_properties self, const char *source, const char *dest )
{
- mlt_property value = mlt_properties_find( this, dest );
+ mlt_property value = mlt_properties_find( self, dest );
if ( value == NULL )
{
- property_list *list = this->local;
+ property_list *list = self->local;
int i = 0;
- // Locate the item
+ // Locate the item
+ mlt_properties_lock( self );
for ( i = 0; i < list->count; i ++ )
{
if ( !strcmp( list->name[ i ], source ) )
break;
}
}
+ mlt_properties_unlock( self );
}
return value != NULL;
}
-/** Dump the properties.
-*/
+/** Dump the properties to a file handle.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param output a file handle
+ */
-void mlt_properties_dump( mlt_properties this, FILE *output )
+void mlt_properties_dump( mlt_properties self, FILE *output )
{
- property_list *list = this->local;
+ if ( !self || !output ) return;
+ property_list *list = self->local;
int i = 0;
for ( i = 0; i < list->count; i ++ )
- if ( mlt_properties_get( this, list->name[ i ] ) != NULL )
- fprintf( output, "%s=%s\n", list->name[ i ], mlt_properties_get( this, list->name[ i ] ) );
+ if ( mlt_properties_get( self, list->name[ i ] ) != NULL )
+ fprintf( output, "%s=%s\n", list->name[ i ], mlt_properties_get( self, list->name[ i ] ) );
}
-void mlt_properties_debug( mlt_properties this, const char *title, FILE *output )
+/** Output the properties to a file handle.
+ *
+ * This version includes reference counts and does not put each property on a new line.
+ * \public \memberof mlt_properties_s
+ * \param self a properties pointer
+ * \param title a string to preface the output
+ * \param output a file handle
+ */
+void mlt_properties_debug( mlt_properties self, const char *title, FILE *output )
{
+ if ( !self || !output ) return;
if ( output == NULL ) output = stderr;
fprintf( output, "%s: ", title );
- if ( this != NULL )
+ if ( self != NULL )
{
- property_list *list = this->local;
+ property_list *list = self->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 ] ) );
+ if ( mlt_properties_get( self, list->name[ i ] ) != NULL )
+ fprintf( output, ", %s=%s", list->name[ i ], mlt_properties_get( self, list->name[ i ] ) );
else
- fprintf( output, ", %s=%p", list->name[ i ], mlt_properties_get_data( this, list->name[ i ], NULL ) );
+ fprintf( output, ", %s=%p", list->name[ i ], mlt_properties_get_data( self, list->name[ i ], NULL ) );
fprintf( output, " ]" );
}
fprintf( output, "\n" );
}
-int mlt_properties_save( mlt_properties this, const char *filename )
+/** Save the properties to a file by name.
+ *
+ * This uses the dump format - one line per property.
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param filename the name of a file to create or overwrite
+ * \return true if there was an error
+ */
+
+int mlt_properties_save( mlt_properties self, const char *filename )
{
int error = 1;
+ if ( !self || !filename ) return error;
FILE *f = fopen( filename, "w" );
if ( f != NULL )
{
- mlt_properties_dump( this, f );
+ mlt_properties_dump( self, f );
fclose( f );
error = 0;
}
}
/* This is a very basic cross platform fnmatch replacement - it will fail in
-** many cases, but for the basic *.XXX and YYY*.XXX, it will work ok.
-*/
+ * many cases, but for the basic *.XXX and YYY*.XXX, it will work ok.
+ */
+
+/** Test whether a filename or pathname matches a shell-style pattern.
+ *
+ * \private \memberof mlt_properties_s
+ * \param wild a string containing a wildcard pattern
+ * \param file the name of a file to test against
+ * \return true if the file name matches the wildcard pattern
+ */
static int mlt_fnmatch( const char *wild, const char *file )
{
return strlen( file ) == f && strlen( wild ) == w;
}
-static int mlt_compare( const void *this, const void *that )
+/** Compare the string or serialized value of two properties.
+ *
+ * \private \memberof mlt_properties_s
+ * \param self a property
+ * \param that a property
+ * \return < 0 if \p self less than \p that, 0 if equal, or > 0 if \p self is greater than \p that
+ */
+
+static int mlt_compare( const void *self, const void *that )
{
- return strcmp( mlt_property_get_string( *( mlt_property * )this ), mlt_property_get_string( *( mlt_property * )that ) );
+ return strcmp( mlt_property_get_string( *( const mlt_property * )self ), mlt_property_get_string( *( const mlt_property * )that ) );
}
-/* Obtains an optionally sorted list of the files found in a directory with a specific wild card.
+/** Get the contents of a directory.
+ *
+ * Obtains an optionally sorted list of the files found in a directory with a specific wild card.
* Entries in the list have a numeric name (running from 0 to count - 1). Only values change
* position if sort is enabled. Designed to be posix compatible (linux, os/x, mingw etc).
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param dirname the name of the directory
+ * \param pattern a wildcard pattern to filter the directory listing
+ * \param sort Do you want to sort the directory listing?
+ * \return the number of items in the directory listing
*/
-int mlt_properties_dir_list( mlt_properties this, const char *dirname, const char *pattern, int sort )
+int mlt_properties_dir_list( mlt_properties self, const char *dirname, const char *pattern, int sort )
{
DIR *dir = opendir( dirname );
char fullname[ 1024 ];
while( de != NULL )
{
- sprintf( key, "%d", mlt_properties_count( this ) );
+ sprintf( key, "%d", mlt_properties_count( self ) );
snprintf( fullname, 1024, "%s/%s", dirname, de->d_name );
- if ( de->d_name[ 0 ] != '.' && mlt_fnmatch( pattern, de->d_name ) )
- mlt_properties_set( this, key, fullname );
+ if ( pattern == NULL )
+ mlt_properties_set( self, key, fullname );
+ else if ( de->d_name[ 0 ] != '.' && mlt_fnmatch( pattern, de->d_name ) )
+ mlt_properties_set( self, key, fullname );
de = readdir( dir );
}
closedir( dir );
}
- if ( sort && mlt_properties_count( this ) )
+ if ( sort && mlt_properties_count( self ) )
{
- property_list *list = this->local;
- qsort( list->value, mlt_properties_count( this ), sizeof( mlt_property ), mlt_compare );
+ property_list *list = self->local;
+ mlt_properties_lock( self );
+ qsort( list->value, mlt_properties_count( self ), sizeof( mlt_property ), mlt_compare );
+ mlt_properties_unlock( self );
}
- return mlt_properties_count( this );
+ return mlt_properties_count( self );
}
-/** Close the list.
-*/
+/** Close a properties object.
+ *
+ * Deallocates the properties object and everything it contains.
+ * \public \memberof mlt_properties_s
+ * \param self a properties object
+ */
-void mlt_properties_close( mlt_properties this )
+void mlt_properties_close( mlt_properties self )
{
- if ( this != NULL && mlt_properties_dec_ref( this ) <= 0 )
+ if ( self != NULL && mlt_properties_dec_ref( self ) <= 0 )
{
- if ( this->close != NULL )
+ if ( self->close != NULL )
{
- this->close( this->close_object );
+ self->close( self->close_object );
}
else
{
- property_list *list = this->local;
+ property_list *list = self->local;
int index = 0;
#if _MLT_PROPERTY_CHECKS_ == 1
// Show debug info
- mlt_properties_debug( this, "Closing", stderr );
+ mlt_properties_debug( self, "Closing", stderr );
#endif
#ifdef _MLT_PROPERTY_CHECKS_
properties_destroyed ++;
// Show current stats - these should match when the app is closed
- fprintf( stderr, "Created %d, destroyed %d\n", properties_created, properties_destroyed );
+ mlt_log( NULL, MLT_LOG_DEBUG, "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 ] );
+ free( list->name[ index ] );
}
-
+
+#if defined(__linux__) || defined(__DARWIN__)
+ // Cleanup locale
+ if ( list->locale )
+ freelocale( list->locale );
+#endif
+
// Clear up the list
+ pthread_mutex_destroy( &list->mutex );
free( list->name );
free( list->value );
free( list );
-
- // Free this now if this has no child
- if ( this->child == NULL )
- free( this );
+
+ // Free self now if self has no child
+ if ( self->child == NULL )
+ free( self );
}
}
}
+/** Determine if the properties list is really just a sequence or ordered list.
+ *
+ * \public \memberof mlt_properties_s
+ * \param properties a properties list
+ * \return true if all of the property names are numeric (a sequence)
+ */
+
+int mlt_properties_is_sequence( mlt_properties properties )
+{
+ int i;
+ int n = mlt_properties_count( properties );
+ for ( i = 0; i < n; i++ )
+ if ( ! isdigit( mlt_properties_get_name( properties, i )[0] ) )
+ return 0;
+ return 1;
+}
+
+/** \brief YAML Tiny Parser context structure
+ *
+ * YAML is a nifty text format popular in the Ruby world as a cleaner,
+ * less verbose alternative to XML. See this Wikipedia topic for an overview:
+ * http://en.wikipedia.org/wiki/YAML
+ * The YAML specification is at:
+ * http://yaml.org/
+ * YAML::Tiny is a Perl module that specifies a subset of YAML that we are
+ * using here (for the same reasons):
+ * http://search.cpan.org/~adamk/YAML-Tiny-1.25/lib/YAML/Tiny.pm
+ * \private
+ */
+
+struct yaml_parser_context
+{
+ mlt_deque stack;
+ unsigned int level;
+ int index;
+ mlt_deque index_stack;
+ char block;
+ char *block_name;
+ unsigned int block_indent;
+
+};
+typedef struct yaml_parser_context *yaml_parser;
+
+/** Remove spaces from the left side of a string.
+ *
+ * \param s the string to trim
+ * \return the number of characters removed
+ */
+
+static unsigned int ltrim( char **s )
+{
+ unsigned int i = 0;
+ char *c = *s;
+ int n = strlen( c );
+ for ( i = 0; i < n && *c == ' '; i++, c++ );
+ *s = c;
+ return i;
+}
+
+/** Remove spaces from the right side of a string.
+ *
+ * \param s the string to trim
+ * \return the number of characters removed
+ */
+
+static unsigned int rtrim( char *s )
+{
+ int n = strlen( s );
+ int i;
+ for ( i = n; i > 0 && s[i - 1] == ' '; --i )
+ s[i - 1] = 0;
+ return n - i;
+}
+
+/** Parse a line of YAML Tiny.
+ *
+ * Adds a property if needed.
+ * \private \memberof yaml_parser_context
+ * \param context a YAML Tiny Parser context
+ * \param namevalue a line of YAML Tiny
+ * \return true if there was an error
+ */
+
+static int parse_yaml( yaml_parser context, const char *namevalue )
+{
+ char *name_ = strdup( namevalue );
+ char *name = name_;
+ char *value = NULL;
+ int error = 0;
+ char *ptr = strchr( name, ':' );
+ unsigned int indent = ltrim( &name );
+ mlt_properties properties = mlt_deque_peek_back( context->stack );
+
+ // Ascending one more levels in the tree
+ if ( indent < context->level )
+ {
+ unsigned int i;
+ unsigned int n = ( context->level - indent ) / 2;
+ for ( i = 0; i < n; i++ )
+ {
+ mlt_deque_pop_back( context->stack );
+ context->index = mlt_deque_pop_back_int( context->index_stack );
+ }
+ properties = mlt_deque_peek_back( context->stack );
+ context->level = indent;
+ }
+
+ // Descending a level in the tree
+ else if ( indent > context->level && context->block == 0 )
+ {
+ context->level = indent;
+ }
+
+ // If there is a colon that is not part of a block
+ if ( ptr && ( indent == context->level ) )
+ {
+ // Reset block processing
+ if ( context->block_name )
+ {
+ free( context->block_name );
+ context->block_name = NULL;
+ context->block = 0;
+ }
+
+ // Terminate the name and setup the value pointer
+ *( ptr ++ ) = 0;
+
+ // Trim comment
+ char *comment = strchr( ptr, '#' );
+ if ( comment )
+ {
+ *comment = 0;
+ }
+
+ // Trim leading and trailing spaces from bare value
+ ltrim( &ptr );
+ rtrim( ptr );
+
+ // No value means a child
+ if ( strcmp( ptr, "" ) == 0 )
+ {
+ mlt_properties child = mlt_properties_new();
+ mlt_properties_set_lcnumeric( child, mlt_properties_get_lcnumeric( properties ) );
+ mlt_properties_set_data( properties, name, child, 0,
+ ( mlt_destructor )mlt_properties_close, NULL );
+ mlt_deque_push_back( context->stack, child );
+ mlt_deque_push_back_int( context->index_stack, context->index );
+ context->index = 0;
+ free( name_ );
+ return error;
+ }
+
+ // A dash indicates a sequence item
+ if ( name[0] == '-' )
+ {
+ mlt_properties child = mlt_properties_new();
+ char key[20];
+
+ mlt_properties_set_lcnumeric( child, mlt_properties_get_lcnumeric( properties ) );
+ snprintf( key, sizeof(key), "%d", context->index++ );
+ mlt_properties_set_data( properties, key, child, 0,
+ ( mlt_destructor )mlt_properties_close, NULL );
+ mlt_deque_push_back( context->stack, child );
+ mlt_deque_push_back_int( context->index_stack, context->index );
+
+ name ++;
+ context->level += ltrim( &name ) + 1;
+ properties = child;
+ }
+
+ // Value is quoted
+ if ( *ptr == '\"' )
+ {
+ ptr ++;
+ value = strdup( ptr );
+ if ( value && value[ strlen( value ) - 1 ] == '\"' )
+ value[ strlen( value ) - 1 ] = 0;
+ }
+
+ // Value is folded or unfolded block
+ else if ( *ptr == '|' || *ptr == '>' )
+ {
+ context->block = *ptr;
+ context->block_name = strdup( name );
+ context->block_indent = 0;
+ value = strdup( "" );
+ }
+
+ // Bare value
+ else
+ {
+ value = strdup( ptr );
+ }
+ }
+
+ // A list of scalars
+ else if ( name[0] == '-' )
+ {
+ // Reset block processing
+ if ( context->block_name )
+ {
+ free( context->block_name );
+ context->block_name = NULL;
+ context->block = 0;
+ }
+
+ char key[20];
+
+ snprintf( key, sizeof(key), "%d", context->index++ );
+ ptr = name + 1;
+
+ // Trim comment
+ char *comment = strchr( ptr, '#' );
+ if ( comment )
+ *comment = 0;
+
+ // Trim leading and trailing spaces from bare value
+ ltrim( &ptr );
+ rtrim( ptr );
+
+ // Value is quoted
+ if ( *ptr == '\"' )
+ {
+ ptr ++;
+ value = strdup( ptr );
+ if ( value && value[ strlen( value ) - 1 ] == '\"' )
+ value[ strlen( value ) - 1 ] = 0;
+ }
+
+ // Value is folded or unfolded block
+ else if ( *ptr == '|' || *ptr == '>' )
+ {
+ context->block = *ptr;
+ context->block_name = strdup( key );
+ context->block_indent = 0;
+ value = strdup( "" );
+ }
+
+ // Bare value
+ else
+ {
+ value = strdup( ptr );
+ }
+
+ free( name_ );
+ name = name_ = strdup( key );
+ }
+
+ // Non-folded block
+ else if ( context->block == '|' )
+ {
+ if ( context->block_indent == 0 )
+ context->block_indent = indent;
+ if ( indent > context->block_indent )
+ name = &name_[ context->block_indent ];
+ rtrim( name );
+ char *old_value = mlt_properties_get( properties, context->block_name );
+ value = calloc( 1, strlen( old_value ) + strlen( name ) + 2 );
+ strcpy( value, old_value );
+ if ( strcmp( old_value, "" ) )
+ strcat( value, "\n" );
+ strcat( value, name );
+ name = context->block_name;
+ }
+
+ // Folded block
+ else if ( context->block == '>' )
+ {
+ ltrim( &name );
+ rtrim( name );
+ char *old_value = mlt_properties_get( properties, context->block_name );
+
+ // Blank line (prepended with spaces) is new line
+ if ( strcmp( name, "" ) == 0 )
+ {
+ value = calloc( 1, strlen( old_value ) + 2 );
+ strcat( value, old_value );
+ strcat( value, "\n" );
+ }
+ // Concatenate with space
+ else
+ {
+ value = calloc( 1, strlen( old_value ) + strlen( name ) + 2 );
+ strcat( value, old_value );
+ if ( strcmp( old_value, "" ) && old_value[ strlen( old_value ) - 1 ] != '\n' )
+ strcat( value, " " );
+ strcat( value, name );
+ }
+ name = context->block_name;
+ }
+
+ else
+ {
+ value = strdup( "" );
+ }
+
+ error = mlt_properties_set( properties, name, value );
+
+ if ( !strcmp( name, "LC_NUMERIC" ) )
+ mlt_properties_set_lcnumeric( properties, value );
+
+ free( name_ );
+ free( value );
+
+ return error;
+}
+
+/** Parse a YAML Tiny file by name.
+ *
+ * \public \memberof mlt_properties_s
+ * \param filename the name of a text file containing YAML Tiny
+ * \return a new properties list
+ */
+
+mlt_properties mlt_properties_parse_yaml( const char *filename )
+{
+ // Construct a standalone properties object
+ mlt_properties self = mlt_properties_new( );
+
+ if ( self )
+ {
+ // Open the file
+ FILE *file = fopen( filename, "r" );
+
+ // Load contents of file
+ if ( file )
+ {
+ // Temp string
+ char temp[ 1024 ];
+ char *ptemp = &temp[ 0 ];
+
+ // Default to LC_NUMERIC = C
+ mlt_properties_set_lcnumeric( self, "C" );
+
+ // Parser context
+ yaml_parser context = calloc( 1, sizeof( struct yaml_parser_context ) );
+ context->stack = mlt_deque_init();
+ context->index_stack = mlt_deque_init();
+ mlt_deque_push_back( context->stack, self );
+ mlt_deque_push_back_int( context->index_stack, 0 );
+
+ // Read each string from the file
+ while( fgets( temp, 1024, file ) )
+ {
+ // Check for end-of-stream
+ if ( strncmp( ptemp, "...", 3 ) == 0 )
+ break;
+
+ // Chomp the string
+ temp[ strlen( temp ) - 1 ] = '\0';
+
+ // Skip blank lines, comment lines, and document separator
+ if ( strcmp( ptemp, "" ) && ptemp[ 0 ] != '#' && strncmp( ptemp, "---", 3 )
+ && strncmp( ptemp, "%YAML", 5 ) && strncmp( ptemp, "% YAML", 6 ) )
+ parse_yaml( context, temp );
+ }
+
+ // Close the file
+ fclose( file );
+ mlt_deque_close( context->stack );
+ mlt_deque_close( context->index_stack );
+ if ( context->block_name )
+ free( context->block_name );
+ free( context );
+ }
+ }
+
+ // Return the pointer
+ return self;
+}
+
+/*
+ * YAML Tiny Serializer
+ */
+
+/** How many bytes to grow at a time */
+#define STRBUF_GROWTH (1024)
+
+/** \brief Private to mlt_properties_s, a self-growing buffer for building strings
+ * \private
+ */
+
+struct strbuf_s
+{
+ size_t size;
+ char *string;
+};
+
+typedef struct strbuf_s *strbuf;
+
+/** Create a new string buffer
+ *
+ * \private \memberof strbuf_s
+ * \return a new string buffer
+ */
+
+static strbuf strbuf_new( )
+{
+ strbuf buffer = calloc( 1, sizeof( struct strbuf_s ) );
+ buffer->size = STRBUF_GROWTH;
+ buffer->string = calloc( 1, buffer->size );
+ return buffer;
+}
+
+/** Destroy a string buffer
+ *
+ * \private \memberof strbuf_s
+ * \param buffer the string buffer to close
+ */
+
+static void strbuf_close( strbuf buffer )
+{
+ // We do not free buffer->string; strbuf user must save that pointer
+ // and free it.
+ if ( buffer )
+ free( buffer );
+}
+
+/** Format a string into a string buffer
+ *
+ * A variable number of arguments follows the format string - one for each
+ * format specifier.
+ * \private \memberof strbuf_s
+ * \param buffer the string buffer to write into
+ * \param format a string that contains text and formatting instructions
+ * \return the formatted string
+ */
+
+static char *strbuf_printf( strbuf buffer, const char *format, ... )
+{
+ while ( buffer->string )
+ {
+ va_list ap;
+ va_start( ap, format );
+ size_t len = strlen( buffer->string );
+ size_t remain = buffer->size - len - 1;
+ int need = vsnprintf( buffer->string + len, remain, format, ap );
+ va_end( ap );
+ if ( need > -1 && need < remain )
+ break;
+ buffer->string[ len ] = 0;
+ buffer->size += need + STRBUF_GROWTH;
+ buffer->string = realloc( buffer->string, buffer->size );
+ }
+ return buffer->string;
+}
+
+/** Indent a line of YAML Tiny.
+ *
+ * \private \memberof strbuf_s
+ * \param output a string buffer
+ * \param indent the number of spaces to indent
+ */
+
+static inline void indent_yaml( strbuf output, int indent )
+{
+ int j;
+ for ( j = 0; j < indent; j++ )
+ strbuf_printf( output, " " );
+}
+
+static void strbuf_escape( strbuf output, const char *value, char c )
+{
+ char *v = strdup( value );
+ char *s = v;
+ char *found = strchr( s, c );
+
+ while ( found )
+ {
+ *found = '\0';
+ strbuf_printf( output, "%s\\%c", s, c );
+ s = found + 1;
+ found = strchr( s, c );
+ }
+ strbuf_printf( output, "%s", s );
+ free( v );
+}
+
+/** Convert a line string into a YAML block literal.
+ *
+ * \private \memberof strbuf_s
+ * \param output a string buffer
+ * \param value the string to format as a block literal
+ * \param indent the number of spaces to indent
+ */
+
+static void output_yaml_block_literal( strbuf output, const char *value, int indent )
+{
+ char *v = strdup( value );
+ char *sol = v;
+ char *eol = strchr( sol, '\n' );
+
+ while ( eol )
+ {
+ indent_yaml( output, indent );
+ *eol = '\0';
+ strbuf_printf( output, "%s\n", sol );
+ sol = eol + 1;
+ eol = strchr( sol, '\n' );
+ }
+ indent_yaml( output, indent );
+ strbuf_printf( output, "%s\n", sol );
+ free( v );
+}
+
+/** Recursively serialize a properties list into a string buffer as YAML Tiny.
+ *
+ * \private \memberof mlt_properties_s
+ * \param self a properties list
+ * \param output a string buffer to hold the serialized YAML Tiny
+ * \param indent the number of spaces to indent (for recursion, initialize to 0)
+ * \param is_parent_sequence Is this properties list really just a sequence (for recursion, initialize to 0)?
+ */
+
+static void serialise_yaml( mlt_properties self, strbuf output, int indent, int is_parent_sequence )
+{
+ property_list *list = self->local;
+ int i = 0;
+
+ for ( i = 0; i < list->count; i ++ )
+ {
+ // This implementation assumes that all data elements are property lists.
+ // Unfortunately, we do not have run time type identification.
+ mlt_properties child = mlt_property_get_data( list->value[ i ], NULL );
+
+ if ( mlt_properties_is_sequence( self ) )
+ {
+ // Ignore hidden/non-serialisable items
+ if ( list->name[ i ][ 0 ] != '_' )
+ {
+ // Indicate a sequence item
+ indent_yaml( output, indent );
+ strbuf_printf( output, "- " );
+
+ // If the value can be represented as a string
+ const char *value = mlt_properties_get( self, list->name[ i ] );
+ if ( value && strcmp( value, "" ) )
+ {
+ // Determine if this is an unfolded block literal
+ if ( strchr( value, '\n' ) )
+ {
+ strbuf_printf( output, "|\n" );
+ output_yaml_block_literal( output, value, indent + strlen( list->name[ i ] ) + strlen( "|" ) );
+ }
+ else if ( strchr( value, ':' ) || strchr( value, '[' ) )
+ {
+ strbuf_printf( output, "\"" );
+ strbuf_escape( output, value, '"' );
+ strbuf_printf( output, "\"\n", value );
+ }
+ else
+ {
+ strbuf_printf( output, "%s\n", value );
+ }
+ }
+ }
+ // Recurse on child
+ if ( child )
+ serialise_yaml( child, output, indent + 2, 1 );
+ }
+ else
+ {
+ // Assume this is a normal map-oriented properties list
+ const char *value = mlt_properties_get( self, list->name[ i ] );
+
+ // Ignore hidden/non-serialisable items
+ // If the value can be represented as a string
+ if ( list->name[ i ][ 0 ] != '_' && value && strcmp( value, "" ) )
+ {
+ if ( is_parent_sequence == 0 )
+ indent_yaml( output, indent );
+ else
+ is_parent_sequence = 0;
+
+ // Determine if this is an unfolded block literal
+ if ( strchr( value, '\n' ) )
+ {
+ strbuf_printf( output, "%s: |\n", list->name[ i ] );
+ output_yaml_block_literal( output, value, indent + strlen( list->name[ i ] ) + strlen( ": " ) );
+ }
+ else if ( strchr( value, ':' ) || strchr( value, '[' ) )
+ {
+ strbuf_printf( output, "%s: \"", list->name[ i ] );
+ strbuf_escape( output, value, '"' );
+ strbuf_printf( output, "\"\n" );
+ }
+ else
+ {
+ strbuf_printf( output, "%s: %s\n", list->name[ i ], value );
+ }
+ }
+
+ // Output a child as a map item
+ if ( child )
+ {
+ indent_yaml( output, indent );
+ strbuf_printf( output, "%s:\n", list->name[ i ] );
+
+ // Recurse on child
+ serialise_yaml( child, output, indent + 2, 0 );
+ }
+ }
+ }
+}
+
+/** Serialize a properties list as a string of YAML Tiny.
+ *
+ * The caller MUST free the returned string!
+ * This operates on properties containing properties as a hierarchical data
+ * structure.
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \return a string containing YAML Tiny that represents the properties list
+ */
+
+char *mlt_properties_serialise_yaml( mlt_properties self )
+{
+ if ( !self ) return NULL;
+ const char *lc_numeric = mlt_properties_get_lcnumeric( self );
+ strbuf b = strbuf_new();
+ strbuf_printf( b, "---\n" );
+ mlt_properties_set_lcnumeric( self, "C" );
+ serialise_yaml( self, b, 0, 0 );
+ mlt_properties_set_lcnumeric( self, lc_numeric );
+ strbuf_printf( b, "...\n" );
+ char *ret = b->string;
+ strbuf_close( b );
+ return ret;
+}
+
+/** Protect a properties list against concurrent access.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ */
+
+void mlt_properties_lock( mlt_properties self )
+{
+ if ( self )
+ pthread_mutex_lock( &( ( property_list* )( self->local ) )->mutex );
+}
+
+/** End protecting a properties list against concurrent access.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ */
+
+void mlt_properties_unlock( mlt_properties self )
+{
+ if ( self )
+ pthread_mutex_unlock( &( ( property_list* )( self->local ) )->mutex );
+}
+
+/** Get a time string associated to the name.
+ *
+ * Do not free the returned string. It's lifetime is controlled by the property.
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to get
+ * \param format the time format that you want
+ * \return the property's time value or NULL if \p name does not exist or there is no profile
+ */
+
+char *mlt_properties_get_time( mlt_properties self, const char* name, mlt_time_format format )
+{
+ mlt_profile profile = mlt_properties_get_data( self, "_profile", NULL );
+ if ( profile )
+ {
+ double fps = mlt_profile_fps( profile );
+ mlt_property value = mlt_properties_find( self, name );
+ property_list *list = self->local;
+ return value == NULL ? NULL : mlt_property_get_time( value, format, fps, list->locale );
+ }
+ return NULL;
+}
+
+/** Convert a frame count to a time string.
+ *
+ * Do not free the returned string. It's lifetime is controlled by the property.
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param frames the frame count to convert
+ * \param format the time format that you want
+ * \return the time string or NULL if error, e.g. there is no profile
+ */
+
+char *mlt_properties_frames_to_time( mlt_properties self, mlt_position frames, mlt_time_format format )
+{
+ const char *name = "_mlt_properties_time";
+ mlt_properties_set_position( self, name, frames );
+ return mlt_properties_get_time( self, name, format );
+}
+
+/** Convert a time string to a frame count.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param time the time string to convert
+ * \return a frame count or a negative value if error, e.g. there is no profile
+ */
+
+mlt_position mlt_properties_time_to_frames( mlt_properties self, const char *time )
+{
+ const char *name = "_mlt_properties_time";
+ mlt_properties_set( self, name, time );
+ return mlt_properties_get_position( self, name );
+}
+
+/** Convert a numeric property to a tuple of color components.
+ *
+ * If the property's string is red, green, blue, white, or black, then it
+ * is converted to the corresponding opaque color tuple. Otherwise, the property
+ * is fetched as an integer and then converted.
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to get
+ * \return a color structure
+ */
+
+mlt_color mlt_properties_get_color( mlt_properties self, const char* name )
+{
+ mlt_profile profile = mlt_properties_get_data( self, "_profile", NULL );
+ double fps = mlt_profile_fps( profile );
+ property_list *list = self->local;
+ mlt_property value = mlt_properties_find( self, name );
+ mlt_color result = { 0xff, 0xff, 0xff, 0xff };
+ if ( value )
+ {
+ const char *color = mlt_property_get_string_l( value, list->locale );
+ unsigned int color_int = mlt_property_get_int( value, fps, list->locale );
+
+ if ( !strcmp( color, "red" ) )
+ {
+ result.r = 0xff;
+ result.g = 0x00;
+ result.b = 0x00;
+ }
+ else if ( !strcmp( color, "green" ) )
+ {
+ result.r = 0x00;
+ result.g = 0xff;
+ result.b = 0x00;
+ }
+ else if ( !strcmp( color, "blue" ) )
+ {
+ result.r = 0x00;
+ result.g = 0x00;
+ result.b = 0xff;
+ }
+ else if ( !strcmp( color, "black" ) )
+ {
+ result.r = 0x00;
+ result.g = 0x00;
+ result.b = 0x00;
+ }
+ else if ( strcmp( color, "white" ) )
+ {
+ result.r = ( color_int >> 24 ) & 0xff;
+ result.g = ( color_int >> 16 ) & 0xff;
+ result.b = ( color_int >> 8 ) & 0xff;
+ result.a = ( color_int ) & 0xff;
+ }
+ }
+ return result;
+}
+
+/** Set a property to an integer value by color.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to set
+ * \param color the color
+ * \return true if error
+ */
+
+int mlt_properties_set_color( mlt_properties self, const char *name, mlt_color color )
+{
+ int error = 1;
+
+ if ( !self || !name ) return error;
+
+ // Fetch the property to work with
+ mlt_property property = mlt_properties_fetch( self, name );
+
+ // Set it if not NULL
+ if ( property != NULL )
+ {
+ uint32_t value = ( color.r << 24 ) | ( color.g << 16 ) | ( color.b << 8 ) | color.a;
+ error = mlt_property_set_int( property, value );
+ mlt_properties_do_mirror( self, name );
+ }
+
+ mlt_events_fire( self, "property-changed", name, NULL );
+
+ return error;
+}
+
+/** Get a string value by name at a frame position.
+ *
+ * Do not free the returned string. It's lifetime is controlled by the property
+ * and this properties object.
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to get
+ * \param position the frame number
+ * \param length the maximum number of frames when interpreting negative keyframe times,
+ * <=0 if you don't care or need that
+ * \return the property's string value or NULL if it does not exist
+ */
+
+char* mlt_properties_anim_get( mlt_properties self, const char *name, int position, int length )
+{
+ mlt_profile profile = mlt_properties_get_data( self, "_profile", NULL );
+ double fps = mlt_profile_fps( profile );
+ mlt_property value = mlt_properties_find( self, name );
+ property_list *list = self->local;
+ return value == NULL ? NULL : mlt_property_anim_get_string( value, fps, list->locale, position, length );
+}
+
+/** Set a property to a string at a frame position.
+ *
+ * The event "property-changed" is fired after the property has been set.
+ *
+ * This makes a copy of the string value you supply.
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to set
+ * \param value the property's new value
+ * \param position the frame number
+ * \param length the maximum number of frames when interpreting negative keyframe times,
+ * <=0 if you don't care or need that
+ * \return true if error
+ */
+
+int mlt_properties_anim_set( mlt_properties self, const char *name, const char *value, int position, int length )
+{
+ int error = 1;
+
+ if ( !self || !name ) return error;
+
+ // Fetch the property to work with
+ mlt_property property = mlt_properties_fetch( self, name );
+
+ // Set it if not NULL
+ if ( property )
+ {
+ mlt_profile profile = mlt_properties_get_data( self, "_profile", NULL );
+ double fps = mlt_profile_fps( profile );
+ property_list *list = self->local;
+ error = mlt_property_anim_set_string( property, value,
+ fps, list->locale, position, length );
+ mlt_properties_do_mirror( self, name );
+ }
+
+ mlt_events_fire( self, "property-changed", name, NULL );
+
+ return error;
+}
+
+/** Get an integer associated to the name at a frame position.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to get
+ * \param position the frame number
+ * \param length the maximum number of frames when interpreting negative keyframe times,
+ * <=0 if you don't care or need that
+ * \return the integer value, 0 if not found (which may also be a legitimate value)
+ */
+
+int mlt_properties_anim_get_int( mlt_properties self, const char *name, int position, int length )
+{
+ mlt_profile profile = mlt_properties_get_data( self, "_profile", NULL );
+ double fps = mlt_profile_fps( profile );
+ property_list *list = self->local;
+ mlt_property value = mlt_properties_find( self, name );
+ return value == NULL ? 0 : mlt_property_anim_get_int( value, fps, list->locale, position, length );
+}
+
+/** Set a property to an integer value at a frame position.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to set
+ * \param value the integer
+ * \param position the frame number
+ * \param length the maximum number of frames when interpreting negative keyframe times,
+ * <=0 if you don't care or need that
+ * \param keyframe_type the interpolation method for this keyframe
+ * \return true if error
+ */
+
+int mlt_properties_anim_set_int( mlt_properties self, const char *name, int value,
+ int position, int length, mlt_keyframe_type keyframe_type )
+{
+ int error = 1;
+
+ if ( !self || !name ) return error;
+
+ // Fetch the property to work with
+ mlt_property property = mlt_properties_fetch( self, name );
+
+ // Set it if not NULL
+ if ( property != NULL )
+ {
+ mlt_profile profile = mlt_properties_get_data( self, "_profile", NULL );
+ double fps = mlt_profile_fps( profile );
+ property_list *list = self->local;
+ error = mlt_property_anim_set_int( property, value, fps, list->locale, position, length, keyframe_type );
+ mlt_properties_do_mirror( self, name );
+ }
+
+ mlt_events_fire( self, "property-changed", name, NULL );
+
+ return error;
+}
+
+/** Get a real number associated to the name at a frame position.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to get
+ * \param position the frame number
+ * \param length the maximum number of frames when interpreting negative keyframe times,
+ * <=0 if you don't care or need that
+ * \return the real number, 0 if not found (which may also be a legitimate value)
+ */
+
+double mlt_properties_anim_get_double( mlt_properties self, const char *name, int position, int length )
+{
+ mlt_profile profile = mlt_properties_get_data( self, "_profile", NULL );
+ double fps = mlt_profile_fps( profile );
+ property_list *list = self->local;
+ mlt_property value = mlt_properties_find( self, name );
+ return value == NULL ? 0.0 : mlt_property_anim_get_double( value, fps, list->locale, position, length );
+}
+
+/** Set a property to a real number at a frame position.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to set
+ * \param value the real number
+ * \param position the frame number
+ * \param length the maximum number of frames when interpreting negative keyframe times,
+ * <=0 if you don't care or need that
+ * \param keyframe_type the interpolation method for this keyframe
+ * \return true if error
+ */
+
+int mlt_properties_anim_set_double( mlt_properties self, const char *name, double value,
+ int position, int length, mlt_keyframe_type keyframe_type )
+{
+ int error = 1;
+
+ if ( !self || !name ) return error;
+
+ // Fetch the property to work with
+ mlt_property property = mlt_properties_fetch( self, name );
+
+ // Set it if not NULL
+ if ( property != NULL )
+ {
+ mlt_profile profile = mlt_properties_get_data( self, "_profile", NULL );
+ double fps = mlt_profile_fps( profile );
+ property_list *list = self->local;
+ error = mlt_property_anim_set_double( property, value, fps, list->locale, position, length, keyframe_type );
+ mlt_properties_do_mirror( self, name );
+ }
+
+ mlt_events_fire( self, "property-changed", name, NULL );
+
+ return error;
+}
+
+/** Get the animation associated to the name.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to get
+ * \return The animation object or NULL if the property has no animation
+ */
+
+mlt_animation mlt_properties_get_animation( mlt_properties self, const char *name )
+{
+ mlt_property value = mlt_properties_find( self, name );
+ return value == NULL ? NULL : mlt_property_get_animation( value );
+}
+
+/** Set a property to a rectangle value.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to set
+ * \param value the rectangle
+ * \return true if error
+ */
+
+extern int mlt_properties_set_rect( mlt_properties self, const char *name, mlt_rect value )
+{
+ int error = 1;
+
+ if ( !self || !name ) return error;
+
+ // Fetch the property to work with
+ mlt_property property = mlt_properties_fetch( self, name );
+
+ // Set it if not NULL
+ if ( property != NULL )
+ {
+ error = mlt_property_set_rect( property, value );
+ mlt_properties_do_mirror( self, name );
+ }
+
+ mlt_events_fire( self, "property-changed", name, NULL );
+
+ return error;
+}
+
+/** Get a rectangle associated to the name.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to get
+ * \return the rectangle value, the rectangle fields will be DBL_MIN if not found
+ */
+
+extern mlt_rect mlt_properties_get_rect( mlt_properties self, const char* name )
+{
+ property_list *list = self->local;
+ mlt_property value = mlt_properties_find( self, name );
+ mlt_rect rect = { DBL_MIN, DBL_MIN, DBL_MIN, DBL_MIN, DBL_MIN };
+ return value == NULL ? rect : mlt_property_get_rect( value, list->locale );
+}
+
+/** Set a property to a rectangle value at a frame position.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to set
+ * \param value the rectangle
+ * \param position the frame number
+ * \param length the maximum number of frames when interpreting negative keyframe times,
+ * <=0 if you don't care or need that
+ * \param keyframe_type the interpolation method for this keyframe
+ * \return true if error
+ */
+
+extern int mlt_properties_anim_set_rect( mlt_properties self, const char *name, mlt_rect value,
+ int position, int length , mlt_keyframe_type keyframe_type )
+{
+ int error = 1;
+
+ if ( !self || !name ) return error;
+
+ // Fetch the property to work with
+ mlt_property property = mlt_properties_fetch( self, name );
+
+ // Set it if not NULL
+ if ( property != NULL )
+ {
+ mlt_profile profile = mlt_properties_get_data( self, "_profile", NULL );
+ double fps = mlt_profile_fps( profile );
+ property_list *list = self->local;
+ error = mlt_property_anim_set_rect( property, value, fps, list->locale, position, length, keyframe_type );
+ mlt_properties_do_mirror( self, name );
+ }
+
+ mlt_events_fire( self, "property-changed", name, NULL );
+
+ return error;
+}
+
+/** Get a rectangle associated to the name at a frame position.
+ *
+ * \public \memberof mlt_properties_s
+ * \param self a properties list
+ * \param name the property to get
+ * \param position the frame number
+ * \param length the maximum number of frames when interpreting negative keyframe times,
+ * <=0 if you don't care or need that
+ * \return the rectangle value, the rectangle fields will be DBL_MIN if not found
+ */
+
+extern mlt_rect mlt_properties_anim_get_rect( mlt_properties self, const char *name, int position, int length )
+{
+ mlt_profile profile = mlt_properties_get_data( self, "_profile", NULL );
+ double fps = mlt_profile_fps( profile );
+ property_list *list = self->local;
+ mlt_property value = mlt_properties_find( self, name );
+ mlt_rect rect = { DBL_MIN, DBL_MIN, DBL_MIN, DBL_MIN, DBL_MIN };
+ return value == NULL ? rect : mlt_property_anim_get_rect( value, fps, list->locale, position, length );
+}
projects / mlt / blobdiff