* \brief Property class definition
* \see mlt_property_s
*
- * Copyright (C) 2003-2009 Ushodaya Enterprises Limited
+ * 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
*/
+// 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>
/** Bit pattern used internally to indicated representations available.
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_int64 = 32, //!< set as a 64-bit integer
+ mlt_prop_rect = 64 //!< set as a mlt_rect
}
mlt_property_type;
int length;
mlt_destructor destructor;
mlt_serialiser serialiser;
+
+ pthread_mutex_t mutex;
+ mlt_animation animation;
};
/** Construct a property and initialize it
mlt_property mlt_property_init( )
{
- mlt_property self = malloc( sizeof( struct mlt_property_s ) );
- if ( self != NULL )
- {
- 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;
- }
+ mlt_property self = calloc( 1, sizeof( *self ) );
+ if ( self )
+ pthread_mutex_init( &self->mutex, NULL );
return self;
}
if ( self->types & mlt_prop_string )
free( self->prop_string );
+ if ( self->animation )
+ mlt_animation_close( self->animation );
+
// Wipe stuff
self->types = 0;
self->prop_int = 0;
self->length = 0;
self->destructor = NULL;
self->serialiser = NULL;
+ self->animation = NULL;
}
/** Set the property to an integer value.
int mlt_property_set_int( mlt_property self, 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;
}
int mlt_property_set_double( mlt_property self, 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;
}
int mlt_property_set_position( mlt_property self, mlt_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;
}
int mlt_property_set_string( mlt_property self, const char *value )
{
+ pthread_mutex_lock( &self->mutex );
if ( value != self->prop_string )
{
mlt_property_clear( self );
{
self->types = mlt_prop_string;
}
+ pthread_mutex_unlock( &self->mutex );
return self->prop_string == NULL;
}
int mlt_property_set_int64( mlt_property self, int64_t 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;
}
int mlt_property_set_data( mlt_property self, void *value, int length, mlt_destructor destructor, mlt_serialiser serialiser )
{
+ pthread_mutex_lock( &self->mutex );
if ( self->data == value )
self->destructor = NULL;
mlt_property_clear( self );
self->length = length;
self->destructor = destructor;
self->serialiser = serialiser;
+ pthread_mutex_unlock( &self->mutex );
return 0;
}
-/** Convert a base 10 or base 16 string to an integer.
+/** 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 )
+{
+ 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.
* 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 inline int mlt_property_atoi( const char *value )
+static int mlt_property_atoi( const char *value, double fps, locale_t locale )
{
- if ( value == NULL )
- return 0;
// Parse a hex color value as #RRGGBB or #AARRGGBB.
if ( value[0] == '#' )
{
{
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 );
*
* \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 self )
+int mlt_property_get_int( mlt_property self, double fps, locale_t locale )
{
if ( self->types & mlt_prop_int )
return self->prop_int;
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 );
+ return mlt_property_atoi( self->prop_string, fps, locale );
return 0;
}
+/** 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;
+ }
+}
+
/** 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 mlt_property_get_double( mlt_property self, double fps, locale_t locale )
{
if ( self->types & mlt_prop_double )
return self->prop_double;
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 atof( self->prop_string );
+ return mlt_property_atof( self->prop_string, fps, locale );
return 0;
}
* 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 self )
+mlt_position mlt_property_get_position( mlt_property self, double fps, locale_t locale )
{
if ( self->types & mlt_prop_position )
return self->prop_position;
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 )atol( self->prop_string );
+ return ( mlt_position )mlt_property_atoi( self->prop_string, fps, locale );
return 0;
}
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;
// Construct a string if need be
if ( ! ( self->types & mlt_prop_string ) )
{
+ pthread_mutex_lock( &self->mutex );
if ( self->types & mlt_prop_int )
{
self->types |= mlt_prop_string;
{
self->types |= mlt_prop_string;
self->prop_string = malloc( 32 );
- sprintf( self->prop_string, "%f", self->prop_double );
+ sprintf( self->prop_string, "%g", self->prop_double );
}
else if ( self->types & mlt_prop_position )
{
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 self->prop_string;
+}
+
+/** 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 );
+
+ // 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)
void mlt_property_close( mlt_property self )
{
mlt_property_clear( self );
+ pthread_mutex_destroy( &self->mutex );
free( self );
}
*/
void mlt_property_pass( mlt_property self, mlt_property that )
{
+ pthread_mutex_lock( &self->mutex );
mlt_property_clear( self );
self->types = that->types;
self->prop_double = that->prop_double;
else if ( self->types & mlt_prop_position )
self->prop_position = that->prop_position;
- else if ( self->types & mlt_prop_string )
+ if ( self->types & mlt_prop_string )
{
if ( that->prop_string != NULL )
self->prop_string = strdup( that->prop_string );
}
- else if ( self->types & mlt_prop_data && self->serialiser != NULL )
+ 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 = self->serialiser( self->data, self->length );
+ 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