org.bytedeco.javacpp

Class avcodec.AVPacket

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.javacpp.avcodec.AVPacket

Enclosing class:

avcodec

public static class avcodec.AVPacket
extends Pointer

This structure stores compressed data. It is typically exported by demuxers and then passed as input to decoders, or received as output from encoders and then passed to muxers. For video, it should typically contain one compressed frame. For audio it may contain several compressed frames. AVPacket is one of the few structs in FFmpeg, whose size is a part of public ABI. Thus it may be allocated on stack and no new fields can be added to it without libavcodec and libavformat major bump. The semantics of data ownership depends on the buf or destruct (deprecated) fields. If either is set, the packet data is dynamically allocated and is valid indefinitely until av_free_packet() is called (which in turn calls av_buffer_unref()/the destruct callback to free the data). If neither is set, the packet data is typically backed by some static buffer somewhere and is only valid for a limited time (e.g. until the next read call when demuxing). The side data is always allocated with av_malloc() and is freed in av_free_packet().

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	avcodec.AVPacket.Destruct_AVPacket

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
avcodec.AVPacket()
avcodec.AVPacket(int size)
avcodec.AVPacket(Pointer p)

Method Summary

Methods

Modifier and Type	Method and Description
avutil.AVBufferRef	buf() A reference to the reference-counted buffer where the packet data is stored.
avcodec.AVPacket	buf(avutil.AVBufferRef buf)
long	convergence_duration() Time difference in AVStream->time_base units from the pts of this packet to the point at which the output from the decoder has converged independent from the availability of previous frames.
avcodec.AVPacket	convergence_duration(long convergence_duration)
BytePointer	data()
avcodec.AVPacket	data(BytePointer data)
avcodec.AVPacket.Destruct_AVPacket	destruct()
avcodec.AVPacket	destruct(avcodec.AVPacket.Destruct_AVPacket destruct)
long	dts() Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
avcodec.AVPacket	dts(long dts)
int	duration() Duration of this packet in AVStream->time_base units, 0 if unknown.
avcodec.AVPacket	duration(int duration)
int	flags() A combination of AV_PKT_FLAG values
avcodec.AVPacket	flags(int flags)
long	pos() byte position in stream, -1 if unknown
avcodec.AVPacket	pos(long pos)
avcodec.AVPacket	position(int position)
Pointer	priv() Deprecated.
avcodec.AVPacket	priv(Pointer priv)
long	pts() Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will be presented to the user.
avcodec.AVPacket	pts(long pts)
BytePointer	side_data_data(int i) Additional packet data that can be provided by the container.
avcodec.AVPacket	side_data_data(int i, BytePointer side_data_data)
int	side_data_elems()
avcodec.AVPacket	side_data_elems(int side_data_elems)
int	side_data_size(int i)
avcodec.AVPacket	side_data_size(int i, int side_data_size)
int	side_data_type(int i)
avcodec.AVPacket	side_data_type(int i, int side_data_type)
int	size()
avcodec.AVPacket	size(int size)
int	stream_index()
avcodec.AVPacket	stream_index(int stream_index)

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, capacity, capacity, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, hashCode, isNull, limit, limit, memchr, memcmp, memcpy, memmove, memset, offsetof, position, put, setNull, sizeof, toString, withDeallocator, zero

Methods inherited from class java.lang.Object

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

Constructor Detail

avcodec.AVPacket

public avcodec.AVPacket()

avcodec.AVPacket

public avcodec.AVPacket(int size)

avcodec.AVPacket

public avcodec.AVPacket(Pointer p)

Method Detail

position

public avcodec.AVPacket position(int position)

Overrides:

position in class Pointer

buf

public avutil.AVBufferRef buf()

A reference to the reference-counted buffer where the packet data is stored. May be NULL, then the packet data is not reference-counted.

buf

public avcodec.AVPacket buf(avutil.AVBufferRef buf)

pts

public long pts()

Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will be presented to the user. Can be AV_NOPTS_VALUE if it is not stored in the file. pts MUST be larger or equal to dts as presentation cannot happen before decompression, unless one wants to view hex dumps. Some formats misuse the terms dts and pts/cts to mean something different. Such timestamps must be converted to true pts/dts before they are stored in AVPacket.

pts

public avcodec.AVPacket pts(long pts)

dts

public long dts()

Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed. Can be AV_NOPTS_VALUE if it is not stored in the file.

dts

public avcodec.AVPacket dts(long dts)

data

public BytePointer data()

data

public avcodec.AVPacket data(BytePointer data)

size

public int size()

size

public avcodec.AVPacket size(int size)

stream_index

public int stream_index()

stream_index

public avcodec.AVPacket stream_index(int stream_index)

flags

public int flags()

A combination of AV_PKT_FLAG values

flags

public avcodec.AVPacket flags(int flags)

side_data_data

public BytePointer side_data_data(int i)

Additional packet data that can be provided by the container. Packet can contain several types of side information.

side_data_data

public avcodec.AVPacket side_data_data(int i,
                              BytePointer side_data_data)

side_data_size

public int side_data_size(int i)

side_data_size

public avcodec.AVPacket side_data_size(int i,
                              int side_data_size)

side_data_type

public int side_data_type(int i)

side_data_type

public avcodec.AVPacket side_data_type(int i,
                              int side_data_type)

side_data_elems

public int side_data_elems()

side_data_elems

public avcodec.AVPacket side_data_elems(int side_data_elems)

duration

public int duration()

Duration of this packet in AVStream->time_base units, 0 if unknown. Equals next_pts - this_pts in presentation order.

duration

public avcodec.AVPacket duration(int duration)

destruct

public avcodec.AVPacket.Destruct_AVPacket destruct()

destruct

public avcodec.AVPacket destruct(avcodec.AVPacket.Destruct_AVPacket destruct)

priv

@Deprecated
public Pointer priv()

Deprecated.

priv

public avcodec.AVPacket priv(Pointer priv)

pos

public long pos()

byte position in stream, -1 if unknown

pos

public avcodec.AVPacket pos(long pos)

convergence_duration

public long convergence_duration()

Time difference in AVStream->time_base units from the pts of this packet to the point at which the output from the decoder has converged independent from the availability of previous frames. That is, the frames are virtually identical no matter if decoding started from the very first frame or from this keyframe. Is AV_NOPTS_VALUE if unknown. This field is not the display duration of the current packet. This field has no meaning if the packet does not have AV_PKT_FLAG_KEY set. The purpose of this field is to allow seeking in streams that have no keyframes in the conventional sense. It corresponds to the recovery point SEI in H.264 and match_time_delta in NUT. It is also essential for some types of subtitle streams to ensure that all subtitles are correctly displayed after seeking.

convergence_duration

public avcodec.AVPacket convergence_duration(long convergence_duration)