AVFilterBuffer Struct Reference

A reference-counted buffer data type used by the filter system. More...

#include <avfilter.h>

Data Fields
uint8_t *	data [8]
	buffer data for each plane/channel
int	linesize [8]
	number of bytes per line
unsigned	refcount
	number of references to this buffer
void *	priv
	private data to be used by a custom free function
void(*	free )(struct AVFilterBuffer *buf)
	A pointer to the function to deallocate this buffer if the default function is not sufficient.
int	format
	media format
int	w
int	h
	width and height of the allocated buffer

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Detailed Description

A reference-counted buffer data type used by the filter system.

Filters should not store pointers to this structure directly, but instead use the AVFilterBufferRef structure below.

Definition at line 67 of file avfilter.h.

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Field Documentation

uint8_t* AVFilterBuffer::data[8]

buffer data for each plane/channel

Definition at line 68 of file avfilter.h.

Referenced by avfilter_default_get_audio_buffer(), avfilter_get_video_buffer_ref_from_arrays(), does_clip(), ff_avfilter_default_free_buffer(), and vf_next_put_image().

int AVFilterBuffer::linesize[8]

number of bytes per line

Definition at line 69 of file avfilter.h.

Referenced by avfilter_default_get_audio_buffer(), avfilter_get_video_buffer_ref_from_arrays(), does_clip(), and vf_next_put_image().

unsigned AVFilterBuffer::refcount

number of references to this buffer

Definition at line 71 of file avfilter.h.

Referenced by avfilter_default_get_audio_buffer(), avfilter_get_video_buffer_ref_from_arrays(), avfilter_ref_buffer(), avfilter_unref_buffer(), ff_dlog_ref(), and vf_next_put_image().

void* AVFilterBuffer::priv

private data to be used by a custom free function

Definition at line 74 of file avfilter.h.

void(* AVFilterBuffer::free)(struct AVFilterBuffer *buf)

A pointer to the function to deallocate this buffer if the default function is not sufficient.

This could, for example, add the memory back into a memory pool to be reused later without the overhead of reallocating it from scratch.

Referenced by avfilter_default_get_audio_buffer(), avfilter_get_video_buffer_ref_from_arrays(), and avfilter_unref_buffer().

int AVFilterBuffer::format

media format

Definition at line 83 of file avfilter.h.

Referenced by avfilter_get_video_buffer_ref_from_arrays(), start_frame(), and vf_next_put_image().

int AVFilterBuffer::w

Definition at line 84 of file avfilter.h.

Referenced by avfilter_get_video_buffer_ref_from_arrays(), does_clip(), start_frame(), and vf_next_put_image().

int AVFilterBuffer::h

width and height of the allocated buffer

Definition at line 84 of file avfilter.h.

Referenced by avfilter_get_video_buffer_ref_from_arrays(), does_clip(), start_frame(), and vf_next_put_image().

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The documentation for this struct was generated from the following file:

• libavfilter/avfilter.h