Filter class

Filter management. More...

Collaboration diagram for Filter class:

Data Structures
interface	_Filter
interface	FilterStatistics
interface	PidStatistics
interface	PropertyValue
interface	nFraction
interface	Vec2
interface	Vec3
interface	Vec4

Detailed Description

See GF_Filter

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Data Structure Documentation

FilterStatistics

interface FilterStatistics

Statistics object for filter as defined in libgpac.

Fields have the same types, names and semantics as GF_FilterStats, except:

• filter which is not present,
• filter_alias which is exposed as a boolean.

PidStatistics

interface PidStatistics

Statistics object for pid as defined in libgpac.

Fields have the same types, names and semantics as GF_FilterPidStatistics

PropertyValue

interface PropertyValue

PropertyValue for filter, PIDs and packets are passed as :

• native JS types for integers and strings
• nFraction for 32 and 64 bit fractions
• Vec2 for 2D float and interger vectors
• Vec3 for 3D interger vectors
• Vec4 for 4D interger vectors
• ArrayBuffer for data, with data being copied
• Array of above types for list properties

Pointer properties are passed back as "INTERNAL_POINTER" string and cannot be set.

Properties corresponding to constants are usually passed as strings, for example StreamType, CodecID, PixelFormat, AudioFormat.

nFraction

interface nFraction

fraction object

Data Fields
number	num	integer or long long numerator
number	den	unsigned integer or unsigned long long denominator

Vec2

interface Vec2

2D vector object

Data Fields
number	x	integer or float X value
number	y	integer or float Y value

Vec3

interface Vec3

3D vector object

Data Fields
long	x	X value
long	y	Y value
long	z	Z value

Vec4

interface Vec4

4D vector object

Data Fields
long	x	X value
long	y	Y value
long	z	Z value
long	w	W value