org.bytedeco.javacpp

Class avutil.AVPixFmtDescriptor

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.javacpp.avutil.AVPixFmtDescriptor

All Implemented Interfaces:

AutoCloseable

Enclosing class:

avutil

public static class avutil.AVPixFmtDescriptor
extends Pointer

Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes of an image. It also stores the subsampling factors and number of components. \note This is separate of the colorspace (RGB, YCbCr, YPbPr, JPEG-style YUV and all the YUV variants) AVPixFmtDescriptor just stores how values are stored not what these values represent.

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Constructor and Description
avutil.AVPixFmtDescriptor() Default native constructor.
avutil.AVPixFmtDescriptor(long size) Native array allocator.
avutil.AVPixFmtDescriptor(Pointer p) Pointer cast constructor.

Method Summary

Methods

Modifier and Type	Method and Description
BytePointer	alias() Alternative comma-separated names.
avutil.AVComponentDescriptor	comp()
avutil.AVComponentDescriptor	comp(int i) Parameters that describe how pixels are packed.
avutil.AVPixFmtDescriptor	comp(int i, avutil.AVComponentDescriptor comp)
long	flags() Combination of AV_PIX_FMT_FLAG_...
avutil.AVPixFmtDescriptor	flags(long flags)
byte	log2_chroma_h() Amount to shift the luma height right to find the chroma height.
avutil.AVPixFmtDescriptor	log2_chroma_h(byte log2_chroma_h)
byte	log2_chroma_w() Amount to shift the luma width right to find the chroma width.
avutil.AVPixFmtDescriptor	log2_chroma_w(byte log2_chroma_w)
BytePointer	name()
byte	nb_components() The number of components each pixel has, (1-4)
avutil.AVPixFmtDescriptor	nb_components(byte nb_components)
avutil.AVPixFmtDescriptor	position(long position)

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, calloc, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, free, hashCode, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, physicalBytes, position, put, realloc, setNull, sizeof, toString, totalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

avutil.AVPixFmtDescriptor

public avutil.AVPixFmtDescriptor()

Default native constructor.

avutil.AVPixFmtDescriptor

public avutil.AVPixFmtDescriptor(long size)

Native array allocator. Access with Pointer.position(long).

avutil.AVPixFmtDescriptor

public avutil.AVPixFmtDescriptor(Pointer p)

Pointer cast constructor. Invokes Pointer.Pointer(Pointer).

Method Detail

position

public avutil.AVPixFmtDescriptor position(long position)

Overrides:

position in class Pointer

name

@MemberGetter
@Cast(value="const char*")
public BytePointer name()

nb_components

@Cast(value="uint8_t")
public byte nb_components()

The number of components each pixel has, (1-4)

nb_components

public avutil.AVPixFmtDescriptor nb_components(byte nb_components)

log2_chroma_w

@Cast(value="uint8_t")
public byte log2_chroma_w()

Amount to shift the luma width right to find the chroma width. For YV12 this is 1 for example. chroma_width = AV_CEIL_RSHIFT(luma_width, log2_chroma_w) The note above is needed to ensure rounding up. This value only refers to the chroma components.

log2_chroma_w

public avutil.AVPixFmtDescriptor log2_chroma_w(byte log2_chroma_w)

log2_chroma_h

@Cast(value="uint8_t")
public byte log2_chroma_h()

Amount to shift the luma height right to find the chroma height. For YV12 this is 1 for example. chroma_height= AV_CEIL_RSHIFT(luma_height, log2_chroma_h) The note above is needed to ensure rounding up. This value only refers to the chroma components.

log2_chroma_h

public avutil.AVPixFmtDescriptor log2_chroma_h(byte log2_chroma_h)

flags

@Cast(value="uint64_t")
public long flags()

Combination of AV_PIX_FMT_FLAG_... flags.

flags

public avutil.AVPixFmtDescriptor flags(long flags)

comp

@ByRef
public avutil.AVComponentDescriptor comp(int i)

Parameters that describe how pixels are packed. If the format has 1 or 2 components, then luma is 0. If the format has 3 or 4 components: if the RGB flag is set then 0 is red, 1 is green and 2 is blue; otherwise 0 is luma, 1 is chroma-U and 2 is chroma-V. If present, the Alpha channel is always the last component.

comp

public avutil.AVPixFmtDescriptor comp(int i,
                             avutil.AVComponentDescriptor comp)

comp

@MemberGetter
public avutil.AVComponentDescriptor comp()

alias

@MemberGetter
@Cast(value="const char*")
public BytePointer alias()

Alternative comma-separated names.