-/*
- * mlt_property.c -- property class
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
- * Author: Charles Yates <charles.yates@pandora.be>
+/**
+ * \file mlt_property.c
+ * \brief Property class definition
+ * \see mlt_property_s
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * Copyright (C) 2003-2013 Ushodaya Enterprises Limited
+ * \author Charles Yates <charles.yates@pandora.be>
+ * \author Dan Dennedy <dan@dennedy.org>
*
- * This program is distributed in the hope that it will be useful,
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * 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_property.h"
+#include "mlt_animation.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <locale.h>
+#include <pthread.h>
+#include <float.h>
+#include <math.h>
+
-/** Construct and uninitialised property.
+/** Bit pattern used internally to indicated representations available.
*/
+typedef enum
+{
+ mlt_prop_none = 0, //!< not set
+ mlt_prop_int = 1, //!< set as an integer
+ mlt_prop_string = 2, //!< set as string or already converted to string
+ mlt_prop_position = 4,//!< set as a position
+ mlt_prop_double = 8, //!< set as a floating point
+ mlt_prop_data = 16, //!< set as opaque binary
+ mlt_prop_int64 = 32, //!< set as a 64-bit integer
+ mlt_prop_rect = 64 //!< set as a mlt_rect
+}
+mlt_property_type;
+
+/** \brief Property class
+ *
+ * A property is like a variant or dynamic type. They are used for many things
+ * in MLT, but in particular they are the parameter mechanism for the plugins.
+ */
+
+struct mlt_property_s
+{
+ /// Stores a bit pattern of types available for this property
+ mlt_property_type types;
+
+ /// Atomic type handling
+ int prop_int;
+ mlt_position prop_position;
+ double prop_double;
+ int64_t prop_int64;
+
+ /// String handling
+ char *prop_string;
+
+ /// Generic type handling
+ void *data;
+ int length;
+ mlt_destructor destructor;
+ mlt_serialiser serialiser;
+
+ pthread_mutex_t mutex;
+ mlt_animation animation;
+};
+
+/** Construct a property and initialize it
+ * \public \memberof mlt_property_s
+ */
+
mlt_property mlt_property_init( )
{
- mlt_property this = malloc( sizeof( struct mlt_property_s ) );
- if ( this != NULL )
- {
- this->types = 0;
- this->prop_int = 0;
- this->prop_position = 0;
- this->prop_double = 0;
- this->prop_int64 = 0;
- this->prop_string = NULL;
- this->data = NULL;
- this->length = 0;
- this->destructor = NULL;
- this->serialiser = NULL;
- }
- return this;
+ mlt_property self = calloc( 1, sizeof( *self ) );
+ if ( self )
+ pthread_mutex_init( &self->mutex, NULL );
+ return self;
}
-/** Clear a property.
-*/
+/** Clear (0/null) a property.
+ *
+ * Frees up any associated resources in the process.
+ * \private \memberof mlt_property_s
+ * \param self a property
+ */
-static inline void mlt_property_clear( mlt_property this )
+static inline void mlt_property_clear( mlt_property self )
{
// Special case data handling
- if ( this->types & mlt_prop_data && this->destructor != NULL )
- this->destructor( this->data );
+ if ( self->types & mlt_prop_data && self->destructor != NULL )
+ self->destructor( self->data );
// Special case string handling
- if ( this->types & mlt_prop_string )
- free( this->prop_string );
+ if ( self->types & mlt_prop_string )
+ free( self->prop_string );
+
+ if ( self->animation )
+ mlt_animation_close( self->animation );
// Wipe stuff
- this->types = 0;
- this->prop_int = 0;
- this->prop_position = 0;
- this->prop_double = 0;
- this->prop_int64 = 0;
- this->prop_string = NULL;
- this->data = NULL;
- this->length = 0;
- this->destructor = NULL;
- this->serialiser = NULL;
-}
-
-/** Set an int on this property.
-*/
+ self->types = 0;
+ self->prop_int = 0;
+ self->prop_position = 0;
+ self->prop_double = 0;
+ self->prop_int64 = 0;
+ self->prop_string = NULL;
+ self->data = NULL;
+ self->length = 0;
+ self->destructor = NULL;
+ self->serialiser = NULL;
+ self->animation = NULL;
+}
-int mlt_property_set_int( mlt_property this, int value )
+/** Set the property to an integer value.
+ *
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param value an integer
+ * \return false
+ */
+
+int mlt_property_set_int( mlt_property self, int value )
{
- mlt_property_clear( this );
- this->types = mlt_prop_int;
- this->prop_int = value;
+ pthread_mutex_lock( &self->mutex );
+ mlt_property_clear( self );
+ self->types = mlt_prop_int;
+ self->prop_int = value;
+ pthread_mutex_unlock( &self->mutex );
return 0;
}
-/** Set a double on this property.
-*/
+/** Set the property to a floating point value.
+ *
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param value a double precision floating point value
+ * \return false
+ */
-int mlt_property_set_double( mlt_property this, double value )
+int mlt_property_set_double( mlt_property self, double value )
{
- mlt_property_clear( this );
- this->types = mlt_prop_double;
- this->prop_double = value;
+ pthread_mutex_lock( &self->mutex );
+ mlt_property_clear( self );
+ self->types = mlt_prop_double;
+ self->prop_double = value;
+ pthread_mutex_unlock( &self->mutex );
return 0;
}
-/** Set a position on this property.
-*/
+/** Set the property to a position value.
+ *
+ * Position is a relative time value in frame units.
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param value a position value
+ * \return false
+ */
-int mlt_property_set_position( mlt_property this, mlt_position value )
+int mlt_property_set_position( mlt_property self, mlt_position value )
{
- mlt_property_clear( this );
- this->types = mlt_prop_position;
- this->prop_position = value;
+ pthread_mutex_lock( &self->mutex );
+ mlt_property_clear( self );
+ self->types = mlt_prop_position;
+ self->prop_position = value;
+ pthread_mutex_unlock( &self->mutex );
return 0;
}
-/** Set a string on this property.
-*/
+/** Set the property to a string value.
+ *
+ * This makes a copy of the string you supply so you do not need to track
+ * a new reference to it.
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param value the string to copy to the property
+ * \return true if it failed
+ */
-int mlt_property_set_string( mlt_property this, const char *value )
+int mlt_property_set_string( mlt_property self, const char *value )
{
- if ( value != this->prop_string )
+ pthread_mutex_lock( &self->mutex );
+ if ( value != self->prop_string )
{
- mlt_property_clear( this );
- this->types = mlt_prop_string;
+ mlt_property_clear( self );
+ self->types = mlt_prop_string;
if ( value != NULL )
- this->prop_string = strdup( value );
+ self->prop_string = strdup( value );
}
else
{
- this->types = mlt_prop_string;
+ self->types = mlt_prop_string;
}
- return this->prop_string == NULL;
+ pthread_mutex_unlock( &self->mutex );
+ return self->prop_string == NULL;
}
-/** Set an int64 on this property.
-*/
+/** Set the property to a 64-bit integer value.
+ *
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param value a 64-bit integer
+ * \return false
+ */
-int mlt_property_set_int64( mlt_property this, int64_t value )
+int mlt_property_set_int64( mlt_property self, int64_t value )
{
- mlt_property_clear( this );
- this->types = mlt_prop_int64;
- this->prop_int64 = value;
+ pthread_mutex_lock( &self->mutex );
+ mlt_property_clear( self );
+ self->types = mlt_prop_int64;
+ self->prop_int64 = value;
+ pthread_mutex_unlock( &self->mutex );
return 0;
}
-/** Set a data on this property.
-*/
+/** Set a property to an opaque binary value.
+ *
+ * This does not make a copy of the data. You can use a Properties object
+ * with its reference tracking and the destructor function to control
+ * the lifetime of the data. Otherwise, pass NULL for the destructor
+ * function and control the lifetime yourself.
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param value an opaque pointer
+ * \param length the number of bytes pointed to by value (optional)
+ * \param destructor a function to use to destroy this binary data (optional, assuming you manage the resource)
+ * \param serialiser a function to use to convert this binary data to a string (optional)
+ * \return false
+ */
-int mlt_property_set_data( mlt_property this, void *value, int length, mlt_destructor destructor, mlt_serialiser serialiser )
+int mlt_property_set_data( mlt_property self, void *value, int length, mlt_destructor destructor, mlt_serialiser serialiser )
{
- if ( this->data == value )
- this->destructor = NULL;
- mlt_property_clear( this );
- this->types = mlt_prop_data;
- this->data = value;
- this->length = length;
- this->destructor = destructor;
- this->serialiser = serialiser;
+ pthread_mutex_lock( &self->mutex );
+ if ( self->data == value )
+ self->destructor = NULL;
+ mlt_property_clear( self );
+ self->types = mlt_prop_data;
+ self->data = value;
+ self->length = length;
+ self->destructor = destructor;
+ self->serialiser = serialiser;
+ pthread_mutex_unlock( &self->mutex );
return 0;
}
-static inline int mlt_property_atoi( const char *value )
+/** Parse a SMIL clock value.
+ *
+ * \private \memberof mlt_property_s
+ * \param s the string to parse
+ * \param fps frames per second
+ * \param locale the locale to use for parsing a real number value
+ * \return position in frames
+ */
+
+static int time_clock_to_frames( const char *s, double fps, locale_t locale )
{
- if ( value == NULL )
- return 0;
+ char *pos, *copy = strdup( s );
+ int hours = 0, minutes = 0;
+ double seconds;
+
+ s = copy;
+ pos = strrchr( s, ':' );
+ if ( pos ) {
+#if defined(__GLIBC__) || defined(__DARWIN__)
+ if ( locale )
+ seconds = strtod_l( pos + 1, NULL, locale );
+ else
+#endif
+ seconds = strtod( pos + 1, NULL );
+ *pos = 0;
+ pos = strrchr( s, ':' );
+ if ( pos ) {
+ minutes = atoi( pos + 1 );
+ *pos = 0;
+ hours = atoi( s );
+ }
+ else {
+ minutes = atoi( s );
+ }
+ }
+ else {
+#if defined(__GLIBC__) || defined(__DARWIN__)
+ if ( locale )
+ seconds = strtod_l( s, NULL, locale );
+ else
+#endif
+ seconds = strtod( s, NULL );
+ }
+ free( copy );
+
+ return lrint( fps * ( (hours * 3600) + (minutes * 60) + seconds ) );
+}
+
+/** Parse a SMPTE timecode string.
+ *
+ * \private \memberof mlt_property_s
+ * \param s the string to parse
+ * \param fps frames per second
+ * \return position in frames
+ */
+
+static int time_code_to_frames( const char *s, double fps )
+{
+ char *pos, *copy = strdup( s );
+ int hours = 0, minutes = 0, seconds = 0, frames;
+
+ s = copy;
+ pos = strrchr( s, ';' );
+ if ( !pos )
+ pos = strrchr( s, ':' );
+ if ( pos ) {
+ frames = atoi( pos + 1 );
+ *pos = 0;
+ pos = strrchr( s, ':' );
+ if ( pos ) {
+ seconds = atoi( pos + 1 );
+ *pos = 0;
+ pos = strrchr( s, ':' );
+ if ( pos ) {
+ minutes = atoi( pos + 1 );
+ *pos = 0;
+ hours = atoi( s );
+ }
+ else {
+ minutes = atoi( s );
+ }
+ }
+ else {
+ seconds = atoi( s );
+ }
+ }
+ else {
+ frames = atoi( s );
+ }
+ free( copy );
+
+ return lrint( fps * ( (hours * 3600) + (minutes * 60) + seconds ) + frames );
+}
+
+/** Convert a string to an integer.
+ *
+ * The string must begin with '0x' to be interpreted as hexadecimal.
+ * Otherwise, it is interpreted as base 10.
+ *
+ * If the string begins with '#' it is interpreted as a hexadecimal color value
+ * in the form RRGGBB or AARRGGBB. Color values that begin with '0x' are
+ * always in the form RRGGBBAA where the alpha components are not optional.
+ * Applications and services should expect the binary color value in bytes to
+ * be in the following order: RGBA. This means they will have to cast the int
+ * to an unsigned int. This is especially important when they need to shift
+ * right to obtain RGB without alpha in order to make it do a logical instead
+ * of arithmetic shift.
+ *
+ * If the string contains a colon it is interpreted as a time value. If it also
+ * contains a period or comma character, the string is parsed as a clock value:
+ * HH:MM:SS. Otherwise, the time value is parsed as a SMPTE timecode: HH:MM:SS:FF.
+ * \private \memberof mlt_property_s
+ * \param value a string to convert
+ * \param fps frames per second, used when converting from time value
+ * \param locale the locale to use when converting from time clock value
+ * \return the resultant integer
+ */
+static int mlt_property_atoi( const char *value, double fps, locale_t locale )
+{
+ // Parse a hex color value as #RRGGBB or #AARRGGBB.
+ if ( value[0] == '#' )
+ {
+ unsigned int rgb = strtoul( value + 1, NULL, 16 );
+ unsigned int alpha = ( strlen( value ) > 7 ) ? ( rgb >> 24 ) : 0xff;
+ return ( rgb << 8 ) | alpha;
+ }
+ // Do hex and decimal explicitly to avoid decimal value with leading zeros
+ // interpreted as octal.
else if ( value[0] == '0' && value[1] == 'x' )
- return strtol( value + 2, NULL, 16 );
- else
+ {
+ return strtoul( value + 2, NULL, 16 );
+ }
+ else if ( fps > 0 && strchr( value, ':' ) )
+ {
+ if ( strchr( value, '.' ) || strchr( value, ',' ) )
+ return time_clock_to_frames( value, fps, locale );
+ else
+ return time_code_to_frames( value, fps );
+ }
+ else
+ {
return strtol( value, NULL, 10 );
+ }
}
-/** Get an int from this property.
-*/
+/** Get the property as an integer.
+ *
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param fps frames per second, used when converting from time value
+ * \param locale the locale to use when converting from time clock value
+ * \return an integer value
+ */
-int mlt_property_get_int( mlt_property this )
-{
- if ( this->types & mlt_prop_int )
- return this->prop_int;
- else if ( this->types & mlt_prop_double )
- return ( int )this->prop_double;
- else if ( this->types & mlt_prop_position )
- return ( int )this->prop_position;
- else if ( this->types & mlt_prop_int64 )
- return ( int )this->prop_int64;
- else if ( this->types & mlt_prop_string )
- return mlt_property_atoi( this->prop_string );
+int mlt_property_get_int( mlt_property self, double fps, locale_t locale )
+{
+ if ( self->types & mlt_prop_int )
+ return self->prop_int;
+ else if ( self->types & mlt_prop_double )
+ return ( int )self->prop_double;
+ else if ( self->types & mlt_prop_position )
+ return ( int )self->prop_position;
+ else if ( self->types & mlt_prop_int64 )
+ return ( int )self->prop_int64;
+ else if ( self->types & mlt_prop_rect && self->data )
+ return ( int ) ( (mlt_rect*) self->data )->x;
+ else if ( ( self->types & mlt_prop_string ) && self->prop_string )
+ return mlt_property_atoi( self->prop_string, fps, locale );
return 0;
}
-/** Get a double from this property.
-*/
+/** Convert a string to a floating point number.
+ *
+ * If the string contains a colon it is interpreted as a time value. If it also
+ * contains a period or comma character, the string is parsed as a clock value:
+ * HH:MM:SS. Otherwise, the time value is parsed as a SMPTE timecode: HH:MM:SS:FF.
+ * If the numeric string ends with '%' then the value is divided by 100 to convert
+ * it into a ratio.
+ * \private \memberof mlt_property_s
+ * \param value the string to convert
+ * \param fps frames per second, used when converting from time value
+ * \param locale the locale to use when converting from time clock value
+ * \return the resultant real number
+ */
+static double mlt_property_atof( const char *value, double fps, locale_t locale )
+{
+ if ( fps > 0 && strchr( value, ':' ) )
+ {
+ if ( strchr( value, '.' ) || strchr( value, ',' ) )
+ return time_clock_to_frames( value, fps, locale );
+ else
+ return time_code_to_frames( value, fps );
+ }
+ else
+ {
+ char *end = NULL;
+ double result;
+#if defined(__GLIBC__) || defined(__DARWIN__)
+ if ( locale )
+ result = strtod_l( value, &end, locale );
+ else
+#endif
+ result = strtod( value, &end );
+ if ( end && end[0] == '%' )
+ result /= 100.0;
+ return result;
+ }
+}
-double mlt_property_get_double( mlt_property this )
-{
- if ( this->types & mlt_prop_double )
- return this->prop_double;
- else if ( this->types & mlt_prop_int )
- return ( double )this->prop_int;
- else if ( this->types & mlt_prop_position )
- return ( double )this->prop_position;
- else if ( this->types & mlt_prop_int64 )
- return ( double )this->prop_int64;
- else if ( this->types & mlt_prop_string )
- return atof( this->prop_string );
+/** Get the property as a floating point.
+ *
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param fps frames per second, used when converting from time value
+ * \param locale the locale to use for this conversion
+ * \return a floating point value
+ */
+
+double mlt_property_get_double( mlt_property self, double fps, locale_t locale )
+{
+ if ( self->types & mlt_prop_double )
+ return self->prop_double;
+ else if ( self->types & mlt_prop_int )
+ return ( double )self->prop_int;
+ else if ( self->types & mlt_prop_position )
+ return ( double )self->prop_position;
+ else if ( self->types & mlt_prop_int64 )
+ return ( double )self->prop_int64;
+ else if ( self->types & mlt_prop_rect && self->data )
+ return ( (mlt_rect*) self->data )->x;
+ else if ( ( self->types & mlt_prop_string ) && self->prop_string )
+ return mlt_property_atof( self->prop_string, fps, locale );
return 0;
}
-/** Get a position from this property.
-*/
+/** Get the property as a position.
+ *
+ * A position is an offset time in terms of frame units.
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param fps frames per second, used when converting from time value
+ * \param locale the locale to use when converting from time clock value
+ * \return the position in frames
+ */
-mlt_position mlt_property_get_position( mlt_property this )
-{
- if ( this->types & mlt_prop_position )
- return this->prop_position;
- else if ( this->types & mlt_prop_int )
- return ( mlt_position )this->prop_int;
- else if ( this->types & mlt_prop_double )
- return ( mlt_position )this->prop_double;
- else if ( this->types & mlt_prop_int64 )
- return ( mlt_position )this->prop_int64;
- else if ( this->types & mlt_prop_string )
- return ( mlt_position )atol( this->prop_string );
+mlt_position mlt_property_get_position( mlt_property self, double fps, locale_t locale )
+{
+ if ( self->types & mlt_prop_position )
+ return self->prop_position;
+ else if ( self->types & mlt_prop_int )
+ return ( mlt_position )self->prop_int;
+ else if ( self->types & mlt_prop_double )
+ return ( mlt_position )self->prop_double;
+ else if ( self->types & mlt_prop_int64 )
+ return ( mlt_position )self->prop_int64;
+ else if ( self->types & mlt_prop_rect && self->data )
+ return ( mlt_position ) ( (mlt_rect*) self->data )->x;
+ else if ( ( self->types & mlt_prop_string ) && self->prop_string )
+ return ( mlt_position )mlt_property_atoi( self->prop_string, fps, locale );
return 0;
}
+/** Convert a string to a 64-bit integer.
+ *
+ * If the string begins with '0x' it is interpreted as a hexadecimal value.
+ * \private \memberof mlt_property_s
+ * \param value a string
+ * \return a 64-bit integer
+ */
+
static inline int64_t mlt_property_atoll( const char *value )
{
if ( value == NULL )
return 0;
else if ( value[0] == '0' && value[1] == 'x' )
return strtoll( value + 2, NULL, 16 );
- else
+ else
return strtoll( value, NULL, 10 );
}
-/** Get an int64 from this property.
-*/
+/** Get the property as a signed integer.
+ *
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \return a 64-bit integer
+ */
-int64_t mlt_property_get_int64( mlt_property this )
-{
- if ( this->types & mlt_prop_int64 )
- return this->prop_int64;
- else if ( this->types & mlt_prop_int )
- return ( int64_t )this->prop_int;
- else if ( this->types & mlt_prop_double )
- return ( int64_t )this->prop_double;
- else if ( this->types & mlt_prop_position )
- return ( int64_t )this->prop_position;
- else if ( this->types & mlt_prop_string )
- return mlt_property_atoll( this->prop_string );
+int64_t mlt_property_get_int64( mlt_property self )
+{
+ if ( self->types & mlt_prop_int64 )
+ return self->prop_int64;
+ else if ( self->types & mlt_prop_int )
+ return ( int64_t )self->prop_int;
+ else if ( self->types & mlt_prop_double )
+ return ( int64_t )self->prop_double;
+ else if ( self->types & mlt_prop_position )
+ return ( int64_t )self->prop_position;
+ else if ( self->types & mlt_prop_rect && self->data )
+ return ( int64_t ) ( (mlt_rect*) self->data )->x;
+ else if ( ( self->types & mlt_prop_string ) && self->prop_string )
+ return mlt_property_atoll( self->prop_string );
return 0;
}
-/** Get a string from this property.
-*/
+/** Get the property as a string.
+ *
+ * The caller is not responsible for deallocating the returned string!
+ * The string is deallocated when the Property is closed.
+ * This tries its hardest to convert the property to string including using
+ * a serialization function for binary data, if supplied.
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \return a string representation of the property or NULL if failed
+ */
-char *mlt_property_get_string( mlt_property this )
+char *mlt_property_get_string( mlt_property self )
{
// Construct a string if need be
- if ( ! ( this->types & mlt_prop_string ) )
+ if ( ! ( self->types & mlt_prop_string ) )
{
- if ( this->types & mlt_prop_int )
+ pthread_mutex_lock( &self->mutex );
+ if ( self->types & mlt_prop_int )
{
- this->types |= mlt_prop_string;
- this->prop_string = malloc( 32 );
- sprintf( this->prop_string, "%d", this->prop_int );
+ self->types |= mlt_prop_string;
+ self->prop_string = malloc( 32 );
+ sprintf( self->prop_string, "%d", self->prop_int );
}
- else if ( this->types & mlt_prop_double )
+ else if ( self->types & mlt_prop_double )
{
- this->types |= mlt_prop_string;
- this->prop_string = malloc( 32 );
- sprintf( this->prop_string, "%f", this->prop_double );
+ self->types |= mlt_prop_string;
+ self->prop_string = malloc( 32 );
+ sprintf( self->prop_string, "%g", self->prop_double );
}
- else if ( this->types & mlt_prop_position )
+ else if ( self->types & mlt_prop_position )
{
- this->types |= mlt_prop_string;
- this->prop_string = malloc( 32 );
- sprintf( this->prop_string, "%d", this->prop_position );
+ self->types |= mlt_prop_string;
+ self->prop_string = malloc( 32 );
+ sprintf( self->prop_string, "%d", (int)self->prop_position );
}
- else if ( this->types & mlt_prop_int64 )
+ else if ( self->types & mlt_prop_int64 )
{
- this->types |= mlt_prop_string;
- this->prop_string = malloc( 32 );
- sprintf( this->prop_string, "%lld", this->prop_int64 );
+ self->types |= mlt_prop_string;
+ self->prop_string = malloc( 32 );
+ sprintf( self->prop_string, "%"PRId64, self->prop_int64 );
}
- else if ( this->types & mlt_prop_data && this->serialiser != NULL )
+ else if ( self->types & mlt_prop_data && self->serialiser != NULL )
{
- this->types |= mlt_prop_string;
- this->prop_string = this->serialiser( this->data, this->length );
+ self->types |= mlt_prop_string;
+ self->prop_string = self->serialiser( self->data, self->length );
}
+ pthread_mutex_unlock( &self->mutex );
}
// Return the string (may be NULL)
- return this->prop_string;
+ return self->prop_string;
}
-/** Get a data and associated length.
-*/
+/** Get the property as a string (with locale).
+ *
+ * The caller is not responsible for deallocating the returned string!
+ * The string is deallocated when the Property is closed.
+ * This tries its hardest to convert the property to string including using
+ * a serialization function for binary data, if supplied.
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param locale the locale to use for this conversion
+ * \return a string representation of the property or NULL if failed
+ */
+
+char *mlt_property_get_string_l( mlt_property self, locale_t locale )
+{
+ // Optimization for no locale
+ if ( !locale )
+ return mlt_property_get_string( self );
-void *mlt_property_get_data( mlt_property this, int *length )
+ // Construct a string if need be
+ if ( ! ( self->types & mlt_prop_string ) )
+ {
+ // TODO: when glibc gets sprintf_l, start using it! For now, hack on setlocale.
+ // Save the current locale
+#if defined(__DARWIN__)
+ const char *localename = querylocale( LC_NUMERIC, locale );
+#elif defined(__GLIBC__)
+ const char *localename = locale->__names[ LC_NUMERIC ];
+#else
+ // TODO: not yet sure what to do on other platforms
+ const char *localename = NULL;
+#endif
+ // Protect damaging the global locale from a temporary locale on another thread.
+ pthread_mutex_lock( &self->mutex );
+
+ // Get the current locale
+ char *orig_localename = strdup( setlocale( LC_NUMERIC, NULL ) );
+
+ // Set the new locale
+ setlocale( LC_NUMERIC, localename );
+
+ if ( self->types & mlt_prop_int )
+ {
+ self->types |= mlt_prop_string;
+ self->prop_string = malloc( 32 );
+ sprintf( self->prop_string, "%d", self->prop_int );
+ }
+ else if ( self->types & mlt_prop_double )
+ {
+ self->types |= mlt_prop_string;
+ self->prop_string = malloc( 32 );
+ sprintf( self->prop_string, "%g", self->prop_double );
+ }
+ else if ( self->types & mlt_prop_position )
+ {
+ self->types |= mlt_prop_string;
+ self->prop_string = malloc( 32 );
+ sprintf( self->prop_string, "%d", (int)self->prop_position );
+ }
+ else if ( self->types & mlt_prop_int64 )
+ {
+ self->types |= mlt_prop_string;
+ self->prop_string = malloc( 32 );
+ sprintf( self->prop_string, "%"PRId64, self->prop_int64 );
+ }
+ else if ( self->types & mlt_prop_data && self->serialiser != NULL )
+ {
+ self->types |= mlt_prop_string;
+ self->prop_string = self->serialiser( self->data, self->length );
+ }
+ // Restore the current locale
+ setlocale( LC_NUMERIC, orig_localename );
+ free( orig_localename );
+ pthread_mutex_unlock( &self->mutex );
+ }
+
+ // Return the string (may be NULL)
+ return self->prop_string;
+}
+
+/** Get the binary data from a property.
+ *
+ * This only works if you previously put binary data into the property.
+ * This does not return a copy of the data; it returns a pointer to it.
+ * If you supplied a destructor function when setting the binary data,
+ * the destructor is used when the Property is closed to free the memory.
+ * Therefore, only free the returned pointer if you did not supply a
+ * destructor function.
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param[out] length the size of the binary object in bytes (optional)
+ * \return an opaque data pointer or NULL if not available
+ */
+
+void *mlt_property_get_data( mlt_property self, int *length )
{
// Assign length if not NULL
if ( length != NULL )
- *length = this->length;
+ *length = self->length;
// Return the data (note: there is no conversion here)
- return this->data;
+ return self->data;
}
-/** Close this property.
-*/
+/** Destroy a property and free all related resources.
+ *
+ * \public \memberof mlt_property_s
+ * \param self a property
+ */
+
+void mlt_property_close( mlt_property self )
+{
+ mlt_property_clear( self );
+ pthread_mutex_destroy( &self->mutex );
+ free( self );
+}
-void mlt_property_close( mlt_property this )
+/** Copy a property.
+ *
+ * A Property holding binary data only copies the data if a serialiser
+ * function was supplied when you set the Property.
+ * \public \memberof mlt_property_s
+ * \author Zach <zachary.drew@gmail.com>
+ * \param self a property
+ * \param that another property
+ */
+void mlt_property_pass( mlt_property self, mlt_property that )
{
- mlt_property_clear( this );
- free( this );
+ pthread_mutex_lock( &self->mutex );
+ mlt_property_clear( self );
+
+ self->types = that->types;
+
+ if ( self->types & mlt_prop_int64 )
+ self->prop_int64 = that->prop_int64;
+ else if ( self->types & mlt_prop_int )
+ self->prop_int = that->prop_int;
+ else if ( self->types & mlt_prop_double )
+ self->prop_double = that->prop_double;
+ else if ( self->types & mlt_prop_position )
+ self->prop_position = that->prop_position;
+ if ( self->types & mlt_prop_string )
+ {
+ if ( that->prop_string != NULL )
+ self->prop_string = strdup( that->prop_string );
+ }
+ else if ( that->types & mlt_prop_rect )
+ {
+ mlt_property_clear( self );
+ self->types = mlt_prop_rect | mlt_prop_data;
+ self->length = that->length;
+ self->data = calloc( 1, self->length );
+ memcpy( self->data, that->data, self->length );
+ self->destructor = free;
+ self->serialiser = that->serialiser;
+ }
+ else if ( self->types & mlt_prop_data && that->serialiser != NULL )
+ {
+ self->types = mlt_prop_string;
+ self->prop_string = that->serialiser( that->data, that->length );
+ }
+ pthread_mutex_unlock( &self->mutex );
}
+/** Convert frame count to a SMPTE timecode string.
+ *
+ * \private \memberof mlt_property_s
+ * \param frames a frame count
+ * \param fps frames per second
+ * \param[out] s the string to write into - must have enough space to hold largest time string
+ */
+
+static void time_smpte_from_frames( int frames, double fps, char *s )
+{
+ int hours, mins, secs;
+ char frame_sep = ':';
+
+ if ( fps == 30000.0/1001.0 )
+ {
+ fps = 30.0;
+ int i, max_frames = frames;
+ for ( i = 1800; i <= max_frames; i += 1800 )
+ {
+ if ( i % 18000 )
+ {
+ max_frames += 2;
+ frames += 2;
+ }
+ }
+ frame_sep = ';';
+ }
+ hours = frames / ( fps * 3600 );
+ frames -= hours * ( fps * 3600 );
+ mins = frames / ( fps * 60 );
+ frames -= mins * ( fps * 60 );
+ secs = frames / fps;
+ frames -= secs * fps;
+ sprintf( s, "%02d:%02d:%02d%c%02d", hours, mins, secs, frame_sep, frames );
+}
+
+/** Convert frame count to a SMIL clock value string.
+ *
+ * \private \memberof mlt_property_s
+ * \param frames a frame count
+ * \param fps frames per second
+ * \param[out] s the string to write into - must have enough space to hold largest time string
+ */
+
+static void time_clock_from_frames( int frames, double fps, char *s )
+{
+ int hours, mins;
+ double secs;
+
+ hours = frames / ( fps * 3600 );
+ frames -= hours * ( fps * 3600 );
+ mins = frames / ( fps * 60 );
+ frames -= mins * ( fps * 60 );
+ secs = (double) frames / fps;
+
+ sprintf( s, "%02d:%02d:%06.3f", hours, mins, secs );
+}
+
+/** Get the property as a time string.
+ *
+ * The time value can be either a SMPTE timecode or SMIL clock value.
+ * The caller is not responsible for deallocating the returned string!
+ * The string is deallocated when the property is closed.
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param format the time format that you want
+ * \param fps frames per second
+ * \param locale the locale to use for this conversion
+ * \return a string representation of the property or NULL if failed
+ */
+
+char *mlt_property_get_time( mlt_property self, mlt_time_format format, double fps, locale_t locale )
+{
+ char *orig_localename = NULL;
+ const char *localename = NULL;
+
+ // Optimization for mlt_time_frames
+ if ( format == mlt_time_frames )
+ return mlt_property_get_string_l( self, locale );
+
+ // Remove existing string
+ if ( self->prop_string )
+ mlt_property_set_int( self, mlt_property_get_int( self, fps, locale ) );
+
+ // Use the specified locale
+ if ( locale )
+ {
+ // TODO: when glibc gets sprintf_l, start using it! For now, hack on setlocale.
+ // Save the current locale
+#if defined(__DARWIN__)
+ localename = querylocale( LC_NUMERIC, locale );
+#elif defined(__GLIBC__)
+ localename = locale->__names[ LC_NUMERIC ];
+#else
+ // TODO: not yet sure what to do on other platforms
+#endif
+ // Protect damaging the global locale from a temporary locale on another thread.
+ pthread_mutex_lock( &self->mutex );
+
+ // Get the current locale
+ orig_localename = strdup( setlocale( LC_NUMERIC, NULL ) );
+
+ // Set the new locale
+ setlocale( LC_NUMERIC, localename );
+ }
+ else
+ {
+ // Make sure we have a lock before accessing self->types
+ pthread_mutex_lock( &self->mutex );
+ }
+
+ // Convert number to string
+ if ( self->types & mlt_prop_int )
+ {
+ self->types |= mlt_prop_string;
+ self->prop_string = malloc( 32 );
+ if ( format == mlt_time_clock )
+ time_clock_from_frames( self->prop_int, fps, self->prop_string );
+ else
+ time_smpte_from_frames( self->prop_int, fps, self->prop_string );
+ }
+ else if ( self->types & mlt_prop_position )
+ {
+ self->types |= mlt_prop_string;
+ self->prop_string = malloc( 32 );
+ if ( format == mlt_time_clock )
+ time_clock_from_frames( (int) self->prop_position, fps, self->prop_string );
+ else
+ time_smpte_from_frames( (int) self->prop_position, fps, self->prop_string );
+ }
+ else if ( self->types & mlt_prop_double )
+ {
+ self->types |= mlt_prop_string;
+ self->prop_string = malloc( 32 );
+ if ( format == mlt_time_clock )
+ time_clock_from_frames( self->prop_double, fps, self->prop_string );
+ else
+ time_smpte_from_frames( self->prop_double, fps, self->prop_string );
+ }
+ else if ( self->types & mlt_prop_int64 )
+ {
+ self->types |= mlt_prop_string;
+ self->prop_string = malloc( 32 );
+ if ( format == mlt_time_clock )
+ time_clock_from_frames( (int) self->prop_int64, fps, self->prop_string );
+ else
+ time_smpte_from_frames( (int) self->prop_int64, fps, self->prop_string );
+ }
+
+ // Restore the current locale
+ if ( locale )
+ {
+ setlocale( LC_NUMERIC, orig_localename );
+ free( orig_localename );
+ pthread_mutex_unlock( &self->mutex );
+ }
+ else
+ {
+ // Make sure we have a lock before accessing self->types
+ pthread_mutex_unlock( &self->mutex );
+ }
+
+ // Return the string (may be NULL)
+ return self->prop_string;
+}
+
+/** Determine if the property holds a numeric or numeric string value.
+ *
+ * \private \memberof mlt_property_s
+ * \param self a property
+ * \param locale the locale to use for string evaluation
+ * \return true if it is numeric
+ */
+
+static int is_property_numeric( mlt_property self, locale_t locale )
+{
+ int result = ( self->types & mlt_prop_int ) ||
+ ( self->types & mlt_prop_int64 ) ||
+ ( self->types & mlt_prop_double ) ||
+ ( self->types & mlt_prop_position ) ||
+ ( self->types & mlt_prop_rect );
+
+ // If not already numeric but string is numeric.
+ if ( ( !result && self->types & mlt_prop_string ) && self->prop_string )
+ {
+ double temp;
+ char *p = NULL;
+#if defined(__GLIBC__) || defined(__DARWIN__)
+ if ( locale )
+ temp = strtod_l( self->prop_string, &p, locale );
+ else
+#endif
+ temp = strtod( self->prop_string, &p );
+ result = ( p != self->prop_string );
+ }
+ return result;
+}
+
+/** A linear interpolation function for animation.
+ *
+ * \private \memberof mlt_property_s
+ */
+
+static inline double linear_interpolate( double y1, double y2, double t )
+{
+ return y1 + ( y2 - y1 ) * t;
+}
+
+/** A smooth spline interpolation for animation.
+ *
+ * For non-closed curves, you need to also supply the tangent vector at the first and last control point.
+ * This is commonly done: T(P[0]) = P[1] - P[0] and T(P[n]) = P[n] - P[n-1].
+ * \private \memberof mlt_property_s
+ */
+
+static inline double catmull_rom_interpolate( double y0, double y1, double y2, double y3, double t )
+{
+ double t2 = t * t;
+ double a0 = -0.5 * y0 + 1.5 * y1 - 1.5 * y2 + 0.5 * y3;
+ double a1 = y0 - 2.5 * y1 + 2 * y2 - 0.5 * y3;
+ double a2 = -0.5 * y0 + 0.5 * y2;
+ double a3 = y1;
+ return a0 * t * t2 + a1 * t2 + a2 * t + a3;
+}
+
+/** Interpolate a new property value given a set of other properties.
+ *
+ * \public \memberof mlt_property_s
+ * \param self the property onto which to set the computed value
+ * \param p an array of at least 1 value in p[1] if \p interp is discrete,
+ * 2 values in p[1] and p[2] if \p interp is linear, or
+ * 4 values in p[0] - p[3] if \p interp is smooth
+ * \param progress a ratio in the range [0, 1] to indicate how far between p[1] and p[2]
+ * \param fps the frame rate, which may be needed for converting a time string to frame units
+ * \param locale the locale, which may be needed for converting a string to a real number
+ * \param interp the interpolation method to use
+ * \return true if there was an error
+ */
+
+int mlt_property_interpolate( mlt_property self, mlt_property p[],
+ double progress, double fps, locale_t locale, mlt_keyframe_type interp )
+{
+ int error = 0;
+ if ( interp != mlt_keyframe_discrete &&
+ is_property_numeric( p[1], locale ) && is_property_numeric( p[2], locale ) )
+ {
+ if ( self->types & mlt_prop_rect )
+ {
+ mlt_rect value = { DBL_MIN, DBL_MIN, DBL_MIN, DBL_MIN, DBL_MIN };
+ if ( interp == mlt_keyframe_linear )
+ {
+ mlt_rect points[2];
+ mlt_rect zero = {0, 0, 0, 0, 0};
+ points[0] = p[1]? mlt_property_get_rect( p[1], locale ) : zero;
+ if ( p[2] )
+ {
+ points[1] = mlt_property_get_rect( p[2], locale );
+ value.x = linear_interpolate( points[0].x, points[1].x, progress );
+ value.y = linear_interpolate( points[0].y, points[1].y, progress );
+ value.w = linear_interpolate( points[0].w, points[1].w, progress );
+ value.h = linear_interpolate( points[0].h, points[1].h, progress );
+ value.o = linear_interpolate( points[0].o, points[1].o, progress );
+ }
+ else
+ {
+ value = points[0];
+ }
+ }
+ else if ( interp == mlt_keyframe_smooth )
+ {
+ mlt_rect points[4];
+ mlt_rect zero = {0, 0, 0, 0, 0};
+ points[1] = p[1]? mlt_property_get_rect( p[1], locale ) : zero;
+ if ( p[2] )
+ {
+ points[0] = p[0]? mlt_property_get_rect( p[0], locale ) : zero;
+ points[2] = p[2]? mlt_property_get_rect( p[2], locale ) : zero;
+ points[3] = p[3]? mlt_property_get_rect( p[3], locale ) : zero;
+ value.x = catmull_rom_interpolate( points[0].x, points[1].x, points[2].x, points[3].x, progress );
+ value.y = catmull_rom_interpolate( points[0].y, points[1].y, points[2].y, points[3].y, progress );
+ value.w = catmull_rom_interpolate( points[0].w, points[1].w, points[2].w, points[3].w, progress );
+ value.h = catmull_rom_interpolate( points[0].h, points[1].h, points[2].h, points[3].h, progress );
+ value.o = catmull_rom_interpolate( points[0].o, points[1].o, points[2].o, points[3].o, progress );
+ }
+ else
+ {
+ value = points[1];
+ }
+ }
+ error = mlt_property_set_rect( self, value );
+ }
+ else
+ {
+ double value;
+ if ( interp == mlt_keyframe_linear )
+ {
+ double points[2];
+ points[0] = p[1]? mlt_property_get_double( p[1], fps, locale ) : 0;
+ points[1] = p[2]? mlt_property_get_double( p[2], fps, locale ) : 0;
+ value = p[2]? linear_interpolate( points[0], points[1], progress ) : points[0];
+ }
+ else if ( interp == mlt_keyframe_smooth )
+ {
+ double points[4];
+ points[0] = p[0]? mlt_property_get_double( p[0], fps, locale ) : 0;
+ points[1] = p[1]? mlt_property_get_double( p[1], fps, locale ) : 0;
+ points[2] = p[2]? mlt_property_get_double( p[2], fps, locale ) : 0;
+ points[3] = p[3]? mlt_property_get_double( p[3], fps, locale ) : 0;
+ value = p[2]? catmull_rom_interpolate( points[0], points[1], points[2], points[3], progress ) : points[1];
+ }
+ error = mlt_property_set_double( self, value );
+ }
+ }
+ else
+ {
+ mlt_property_pass( self, p[1] );
+ }
+ return error;
+}
+
+/** Create a new animation or refresh an existing one.
+ *
+ * \private \memberof mlt_property_s
+ * \param self a property
+ * \param fps the frame rate, which may be needed for converting a time string to frame units
+ * \param locale the locale, which may be needed for converting a string to a real number
+ * \param length the maximum number of frames when interpreting negative keyframe times,
+ * <=0 if you don't care or need that
+ */
+
+static void refresh_animation( mlt_property self, double fps, locale_t locale, int length )
+{
+ if ( !self->animation )
+ {
+ self->animation = mlt_animation_new();
+ if ( self->prop_string )
+ {
+ mlt_animation_parse( self->animation, self->prop_string, length, fps, locale );
+ }
+ else
+ {
+ mlt_animation_set_length( self->animation, length );
+ pthread_mutex_lock( &self->mutex );
+ self->types |= mlt_prop_data;
+ self->data = self->animation;
+ self->serialiser = (mlt_serialiser) mlt_animation_serialize;
+ pthread_mutex_unlock( &self->mutex );
+ }
+ }
+ else if ( self->prop_string )
+ {
+ mlt_animation_refresh( self->animation, self->prop_string, length );
+ }
+}
+
+/** Get the real number at a frame position.
+ *
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param fps the frame rate, which may be needed for converting a time string to frame units
+ * \param locale the locale, which may be needed for converting a string to a 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
+ * \return the real number
+ */
+
+double mlt_property_anim_get_double( mlt_property self, double fps, locale_t locale, int position, int length )
+{
+ pthread_mutex_lock( &self->mutex );
+ double result;
+ if ( self->animation || ( ( self->types & mlt_prop_string ) && self->prop_string ) )
+ {
+ struct mlt_animation_item_s item;
+ item.property = mlt_property_init();
+
+ refresh_animation( self, fps, locale, length );
+ mlt_animation_get_item( self->animation, &item, position );
+ result = mlt_property_get_double( item.property, fps, locale );
+
+ mlt_property_close( item.property );
+ }
+ else
+ {
+ result = mlt_property_get_double( self, fps, locale );
+ }
+ pthread_mutex_unlock( &self->mutex );
+ return result;
+}
+
+/** Get the property as an integer number at a frame position.
+ *
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param fps the frame rate, which may be needed for converting a time string to frame units
+ * \param locale the locale, which may be needed for converting a string to a 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
+ * \return an integer value
+ */
+
+int mlt_property_anim_get_int( mlt_property self, double fps, locale_t locale, int position, int length )
+{
+ pthread_mutex_lock( &self->mutex );
+ int result;
+ if ( self->animation || ( ( self->types & mlt_prop_string ) && self->prop_string ) )
+ {
+ struct mlt_animation_item_s item;
+ item.property = mlt_property_init();
+
+ refresh_animation( self, fps, locale, length );
+ mlt_animation_get_item( self->animation, &item, position );
+ result = mlt_property_get_int( item.property, fps, locale );
+
+ mlt_property_close( item.property );
+ }
+ else
+ {
+ result = mlt_property_get_int( self, fps, locale );
+ }
+ pthread_mutex_unlock( &self->mutex );
+ return result;
+}
+
+/** Get the string at certain a frame position.
+ *
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param fps the frame rate, which may be needed for converting a time string to frame units
+ * \param locale the locale, which may be needed for converting a string to a 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
+ * \return the string representation of the property or NULL if failed
+ */
+
+char* mlt_property_anim_get_string( mlt_property self, double fps, locale_t locale, int position, int length )
+{
+ pthread_mutex_lock( &self->mutex );
+ char *result;
+ if ( self->animation || ( ( self->types & mlt_prop_string ) && self->prop_string ) )
+ {
+ struct mlt_animation_item_s item;
+ item.property = mlt_property_init();
+
+ if ( !self->animation )
+ refresh_animation( self, fps, locale, length );
+ mlt_animation_get_item( self->animation, &item, position );
+
+ if ( self->prop_string )
+ free( self->prop_string );
+ self->prop_string = mlt_property_get_string_l( item.property, locale );
+ if ( self->prop_string )
+ self->prop_string = strdup( self->prop_string );
+ self->types |= mlt_prop_string;
+
+ result = self->prop_string;
+ mlt_property_close( item.property );
+ }
+ else
+ {
+ result = mlt_property_get_string_l( self, locale );
+ }
+ pthread_mutex_unlock( &self->mutex );
+ return result;
+}
+
+/** Set a property animation keyframe to a real number.
+ *
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param value a double precision floating point value
+ * \param fps the frame rate, which may be needed for converting a time string to frame units
+ * \param locale the locale, which may be needed for converting a string to a 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 false if successful, true to indicate error
+ */
+
+int mlt_property_anim_set_double( mlt_property self, double value, double fps, locale_t locale,
+ int position, int length, mlt_keyframe_type keyframe_type )
+{
+ int result;
+ struct mlt_animation_item_s item;
+
+ item.property = mlt_property_init();
+ item.frame = position;
+ item.keyframe_type = keyframe_type;
+ mlt_property_set_double( item.property, value );
+
+ refresh_animation( self, fps, locale, length );
+ result = mlt_animation_insert( self->animation, &item );
+ mlt_animation_interpolate( self->animation );
+ mlt_property_close( item.property );
+
+ return result;
+}
+
+/** Set a property animation keyframe to an integer value.
+ *
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param value an integer
+ * \param fps the frame rate, which may be needed for converting a time string to frame units
+ * \param locale the locale, which may be needed for converting a string to a 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 false if successful, true to indicate error
+ */
+
+int mlt_property_anim_set_int( mlt_property self, int value, double fps, locale_t locale,
+ int position, int length, mlt_keyframe_type keyframe_type )
+{
+ int result;
+ struct mlt_animation_item_s item;
+
+ item.property = mlt_property_init();
+ item.frame = position;
+ item.keyframe_type = keyframe_type;
+ mlt_property_set_int( item.property, value );
+
+ refresh_animation( self, fps, locale, length );
+ result = mlt_animation_insert( self->animation, &item );
+ mlt_animation_interpolate( self->animation );
+ mlt_property_close( item.property );
+
+ return result;
+}
+
+/** Set a property animation keyframe to a string.
+ *
+ * Strings only support discrete animation. Do not use this to set a property's
+ * animation string that contains a semicolon-delimited set of values; use
+ * mlt_property_set() for that.
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param value a string
+ * \param fps the frame rate, which may be needed for converting a time string to frame units
+ * \param locale the locale, which may be needed for converting a string to a 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
+ * \return false if successful, true to indicate error
+ */
+
+int mlt_property_anim_set_string( mlt_property self, const char *value, double fps, locale_t locale, int position, int length )
+{
+ int result;
+ struct mlt_animation_item_s item;
+
+ item.property = mlt_property_init();
+ item.frame = position;
+ item.keyframe_type = mlt_keyframe_discrete;
+ mlt_property_set_string( item.property, value );
+
+ refresh_animation( self, fps, locale, length );
+ result = mlt_animation_insert( self->animation, &item );
+ mlt_animation_interpolate( self->animation );
+ mlt_property_close( item.property );
+
+ return result;
+}
+
+/** Get an object's animation object.
+ *
+ * You might need to call another mlt_property_anim_ function to actually construct
+ * the animation, as this is a simple accessor function.
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \return the animation object or NULL if there is no animation
+ */
+
+mlt_animation mlt_property_get_animation( mlt_property self )
+{
+ return self->animation;
+}
+
+/** Convert a rectangle value into a string.
+ *
+ * Unlike the deprecated mlt_geometry API, the canonical form of a mlt_rect
+ * is a space delimited "x y w h o" even though many kinds of field delimiters
+ * may be used to convert a string to a rectangle.
+ * \private \memberof mlt_property_s
+ * \param rect the rectangle to convert
+ * \param length not used
+ * \return the string representation of a rectangle
+ */
+
+static char* serialise_mlt_rect( mlt_rect *rect, int length )
+{
+ char* result = calloc( 1, 100 );
+ if ( rect->x != DBL_MIN )
+ sprintf( result + strlen( result ), "%g", rect->x );
+ if ( rect->y != DBL_MIN )
+ sprintf( result + strlen( result ), " %g", rect->y );
+ if ( rect->w != DBL_MIN )
+ sprintf( result + strlen( result ), " %g", rect->w );
+ if ( rect->h != DBL_MIN )
+ sprintf( result + strlen( result ), " %g", rect->h );
+ if ( rect->o != DBL_MIN )
+ sprintf( result + strlen( result ), " %g", rect->o );
+ return result;
+}
+
+/** Set a property to a mlt_rect rectangle.
+ *
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param value a rectangle
+ * \return false
+ */
+
+int mlt_property_set_rect( mlt_property self, mlt_rect value )
+{
+ pthread_mutex_lock( &self->mutex );
+ mlt_property_clear( self );
+ self->types = mlt_prop_rect | mlt_prop_data;
+ self->length = sizeof(value);
+ self->data = calloc( 1, self->length );
+ memcpy( self->data, &value, self->length );
+ self->destructor = free;
+ self->serialiser = (mlt_serialiser) serialise_mlt_rect;
+ pthread_mutex_unlock( &self->mutex );
+ return 0;
+}
+
+/** Get the property as a rectangle.
+ *
+ * You can use any non-numeric character(s) as a field delimiter.
+ * If the number has a '%' immediately following it, the number is divided by
+ * 100 to convert it into a real number.
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param locale the locale to use for when converting from a string
+ * \return a rectangle value
+ */
+
+mlt_rect mlt_property_get_rect( mlt_property self, locale_t locale )
+{
+ mlt_rect rect = { DBL_MIN, DBL_MIN, DBL_MIN, DBL_MIN, DBL_MIN };
+ if ( self->types & mlt_prop_rect )
+ rect = *( (mlt_rect*) self->data );
+ else if ( self->types & mlt_prop_double )
+ rect.x = self->prop_double;
+ else if ( self->types & mlt_prop_int )
+ rect.x = ( double )self->prop_int;
+ else if ( self->types & mlt_prop_position )
+ rect.x = ( double )self->prop_position;
+ else if ( self->types & mlt_prop_int64 )
+ rect.x = ( double )self->prop_int64;
+ else if ( ( self->types & mlt_prop_string ) && self->prop_string )
+ {
+ //return mlt_property_atof( self->prop_string, fps, locale );
+ char *value = self->prop_string;
+ char *p = NULL;
+ int count = 0;
+ while ( *value )
+ {
+ double temp;
+#if defined(__GLIBC__) || defined(__DARWIN__)
+ if ( locale )
+ temp = strtod_l( value, &p, locale );
+ else
+#endif
+ temp = strtod( value, &p );
+ if ( p != value )
+ {
+ if ( p[0] == '%' )
+ {
+ temp /= 100.0;
+ p ++;
+ }
+
+ // Chomp the delimiter.
+ if ( *p ) p ++;
+
+ // Assign the value to appropriate field.
+ switch( count )
+ {
+ case 0: rect.x = temp; break;
+ case 1: rect.y = temp; break;
+ case 2: rect.w = temp; break;
+ case 3: rect.h = temp; break;
+ case 4: rect.o = temp; break;
+ }
+ }
+ else
+ {
+ p++;
+ }
+ value = p;
+ count ++;
+ }
+ }
+ return rect;
+}
+
+/** Set a property animation keyframe to a rectangle.
+ *
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param value a rectangle
+ * \param fps the frame rate, which may be needed for converting a time string to frame units
+ * \param locale the locale, which may be needed for converting a string to a 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 false if successful, true to indicate error
+ */
+
+int mlt_property_anim_set_rect( mlt_property self, mlt_rect value, double fps, locale_t locale,
+ int position, int length, mlt_keyframe_type keyframe_type )
+{
+ int result;
+ struct mlt_animation_item_s item;
+
+ item.property = mlt_property_init();
+ item.frame = position;
+ item.keyframe_type = keyframe_type;
+ mlt_property_set_rect( item.property, value );
+
+ refresh_animation( self, fps, locale, length );
+ result = mlt_animation_insert( self->animation, &item );
+ mlt_animation_interpolate( self->animation );
+ mlt_property_close( item.property );
+
+ return result;
+}
+
+/** Get a rectangle at a frame position.
+ *
+ * \public \memberof mlt_property_s
+ * \param self a property
+ * \param fps the frame rate, which may be needed for converting a time string to frame units
+ * \param locale the locale, which may be needed for converting a string to a 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
+ * \return the rectangle
+ */
+
+mlt_rect mlt_property_anim_get_rect( mlt_property self, double fps, locale_t locale, int position, int length )
+{
+ pthread_mutex_lock( &self->mutex );
+ mlt_rect result;
+ if ( self->animation || ( ( self->types & mlt_prop_string ) && self->prop_string ) )
+ {
+ struct mlt_animation_item_s item;
+ item.property = mlt_property_init();
+ item.property->types = mlt_prop_rect;
+
+ refresh_animation( self, fps, locale, length );
+ mlt_animation_get_item( self->animation, &item, position );
+ result = mlt_property_get_rect( item.property, locale );
+
+ mlt_property_close( item.property );
+ }
+ else
+ {
+ result = mlt_property_get_rect( self, locale );
+ }
+ pthread_mutex_unlock( &self->mutex );
+ return result;
+}
projects / mlt / blobdiff