org.bytedeco.javacpp

Class avcodec.AVCodecContext.Get_buffer_AVCodecContext_AVFrame

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.javacpp.FunctionPointer

org.bytedeco.javacpp.avcodec.AVCodecContext.Get_buffer_AVCodecContext_AVFrame

Enclosing class:

avcodec.AVCodecContext

Deprecated.

use get_buffer2()

public static class avcodec.AVCodecContext.Get_buffer_AVCodecContext_AVFrame
extends FunctionPointer

Called at the beginning of each frame to get a buffer for it. The function will set AVFrame.data[], AVFrame.linesize[]. AVFrame.extended_data[] must also be set, but it should be the same as AVFrame.data[] except for planar audio with more channels than can fit in AVFrame.data[]. In that case, AVFrame.data[] shall still contain as many data pointers as it can hold. if CODEC_CAP_DR1 is not set then get_buffer() must call avcodec_default_get_buffer() instead of providing buffers allocated by some other means. AVFrame.data[] should be 32- or 16-byte-aligned unless the CPU doesn't need it. avcodec_default_get_buffer() aligns the output buffer properly, but if get_buffer() is overridden then alignment considerations should be taken into account.

See Also:

Video: If pic.reference is set then the frame will be read later by libavcodec. avcodec_align_dimensions2() should be used to find the required width and height, as they normally need to be rounded up to the next multiple of 16. If frame multithreading is used and thread_safe_callbacks is set, it may be called from a different thread, but not from more than one at once. Does not need to be reentrant., release_buffer(), reget_buffer(), Audio: Decoders request a buffer of a particular size by setting AVFrame.nb_samples prior to calling get_buffer(). The decoder may, however, utilize only part of the buffer by setting AVFrame.nb_samples to a smaller value in the output frame. Decoders cannot use the buffer after returning from avcodec_decode_audio4(), so they will not call release_buffer(), as it is assumed to be released immediately upon return. In some rare cases, a decoder may need to call get_buffer() more than once in a single call to avcodec_decode_audio4(). In that case, when get_buffer() is called again after it has already been called once, the previously acquired buffer is assumed to be released at that time and may not be reused by the decoder. As a convenience, av_samples_get_buffer_size() and av_samples_fill_arrays() in libavutil may be used by custom get_buffer() functions to find the required data size and to fill data pointers and linesize. In AVFrame.linesize, only linesize[0] may be set for audio since all planes must be the same size., av_samples_get_buffer_size(), av_samples_fill_arrays() - encoding: unused - decoding: Set by libavcodec, user can override.

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

Modifier	Constructor and Description
protected	Get_buffer_AVCodecContext_AVFrame() Deprecated.
	Get_buffer_AVCodecContext_AVFrame(Pointer p) Deprecated. Pointer cast constructor.

Method Summary

Modifier and Type	Method and Description
int	call(avcodec.AVCodecContext c, avutil.AVFrame pic) Deprecated.

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, position, put, setNull, sizeof, toString, withDeallocator, zero

Methods inherited from class java.lang.Object

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

Constructor Detail

Get_buffer_AVCodecContext_AVFrame

public Get_buffer_AVCodecContext_AVFrame(Pointer p)

Deprecated.

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

Get_buffer_AVCodecContext_AVFrame

protected Get_buffer_AVCodecContext_AVFrame()

Deprecated.

Method Detail

call

@Deprecated
public int call(avcodec.AVCodecContext c,
                            avutil.AVFrame pic)

Deprecated.