This class uses the ImageMagick++ libraries, to remove (i.e. key out) a color (i.e. greenscreen) More...

#include <ChromaKey.h>

Inheritance diagram for openshot::ChromaKey:

Public Member Functions
	ChromaKey ()
	Blank constructor, useful when using Json to load the effect properties. More...

	ChromaKey (Color color, Keyframe fuzz)

tr1::shared_ptr< Frame >	GetFrame (tr1::shared_ptr< Frame > frame, long int frame_number)
	This method is required for all derived classes of EffectBase, and returns a modified openshot::Frame object. More...

string	Json ()
	Get and Set JSON methods. More...

Json::Value	JsonValue ()
	Generate Json::JsonValue for this object. More...

string	PropertiesJSON (long int requested_frame)

void	SetJson (string value) throw (InvalidJSON)
	Load JSON string into this object. More...

void	SetJsonValue (Json::Value root)
	Load Json::JsonValue into this object. More...

Public Member Functions inherited from openshot::EffectBase
void	DisplayInfo ()
	Display effect information in the standard output stream (stdout) More...

void	InitEffectInfo ()

Json::Value	JsonInfo ()
	Generate JSON object of meta data / info. More...

int	Order ()
	Get the order that this effect should be executed. More...

void	Order (int new_order)
	Set the order that this effect should be executed. More...

Public Member Functions inherited from openshot::ClipBase
float	Duration ()
	Get the length of this clip (in seconds) More...

float	End ()
	Get end position (in seconds) of clip (trim end of video) More...

void	End (float value)
	Set end position (in seconds) of clip (trim end of video) More...

string	Id ()
	Get basic properties. More...

void	Id (string value)
	Set basic properties. More...

int	Layer ()
	Get layer of clip on timeline (lower number is covered by higher numbers) More...

void	Layer (int value)
	Set layer of clip on timeline (lower number is covered by higher numbers) More...

bool	operator< (ClipBase &a)

bool	operator<= (ClipBase &a)

bool	operator> (ClipBase &a)

bool	operator>= (ClipBase &a)

float	Position ()
	Get position on timeline (in seconds) More...

void	Position (float value)
	Set the Id of this clip object More...

float	Start ()
	Get start position (in seconds) of clip (trim start of video) More...

void	Start (float value)
	Set start position (in seconds) of clip (trim start of video) More...

Additional Inherited Members
Public Attributes inherited from openshot::EffectBase
EffectInfoStruct	info
	Information about the current effect. More...

Protected Member Functions inherited from openshot::ClipBase
Json::Value	add_property_choice_json (string name, int value, int selected_value)
	Generate JSON choice for a property (dropdown properties) More...

Json::Value	add_property_json (string name, float value, string type, string memo, bool contains_point, int number_of_points, float min_value, float max_value, InterpolationType intepolation, int closest_point_x, bool readonly)
	Generate JSON for a property. More...

Protected Attributes inherited from openshot::ClipBase
float	end
	The position in seconds to end playing (used to trim the ending of a clip) More...

string	id
	ID Property for all derived Clip and Effect classes. More...

int	layer
	The layer this clip is on. Lower clips are covered up by higher clips. More...

float	position
	The position on the timeline where this clip should start playing. More...

string	previous_properties
	This string contains the previous JSON properties. More...

float	start
	The position in seconds to start playing (used to trim the beginning of a clip) More...

Detailed Description

This class uses the ImageMagick++ libraries, to remove (i.e. key out) a color (i.e. greenscreen)

The greenscreen / bluescreen effect replaces matching colors in the video image with transparent pixels, revealing lower layers in the timeline.

Definition at line 54 of file ChromaKey.h.

Constructor & Destructor Documentation

ChromaKey::ChromaKey ( )

Blank constructor, useful when using Json to load the effect properties.

Definition at line 33 of file ChromaKey.cpp.

ChromaKey::ChromaKey	(	Color	color,
		Keyframe	fuzz
	)

Default constructor, which takes an openshot::Color object and a 'fuzz' factor, which is used to determine how similar colored pixels are matched. The higher the fuzz, the more colors are matched.

Parameters

color	The color to match
fuzz	The fuzz factor (or threshhold)

Definition at line 44 of file ChromaKey.cpp.

Member Function Documentation

tr1::shared_ptr< Frame > ChromaKey::GetFrame	(	tr1::shared_ptr< Frame >	frame,
		long int	frame_number
	)

virtual

This method is required for all derived classes of EffectBase, and returns a modified openshot::Frame object.

The frame object is passed into this method, and a frame_number is passed in which tells the effect which settings to use from it's keyframes (starting at 1).