vf_signature.c File Reference

MPEG-7 video signature calculation and lookup filter. More...

#include <float.h>
#include "libavcodec/put_bits.h"
#include "libavformat/avformat.h"
#include "libavutil/opt.h"
#include "libavutil/avstring.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/timestamp.h"
#include "avfilter.h"
#include "internal.h"
#include "signature.h"
#include "signature_lookup.c"

Macros
#define	OFFSET(x)   offsetof(SignatureContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
#define	BLOCK_LCM   (int64_t) 476985600

Functions
	AVFILTER_DEFINE_CLASS (signature)

Variables
AVFilter	ff_vf_signature

Detailed Description

MPEG-7 video signature calculation and lookup filter.

See also

http://epubs.surrey.ac.uk/531590/1/MPEG-7%20Video%20Signature%20Author%27s%20Copy.pdf

Variable Documentation

ff_vf_signature

AVFilter ff_vf_signature

Initial value:

= {
    .name          = "signature",
    .description   = NULL_IF_CONFIG_SMALL("Calculate the MPEG-7 video signature"),
    .priv_size     = sizeof(SignatureContext),
    .priv_class    = &signature_class,
    .init          = init,
    .uninit        = uninit,
    .query_formats = query_formats,
    .outputs       = signature_outputs,
    .inputs        = NULL,
    .flags         = AVFILTER_FLAG_DYNAMIC_INPUTS,
}