[FFmpeg-devel] [PATCH] add signature filter for MPEG7 video signature

[Michael Niedermayer]

On Sun, Mar 20, 2016 at 12:00:13PM +0100, Gerion Entrup wrote:
[...]
> +++ b/libavfilter/signature.h
> @@ -0,0 +1,569 @@
> +/*
> + * Copyright (c) 2016 Gerion Entrup
> + *
> + * This file is part of FFmpeg.
> + *
> + * FFmpeg is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * FFmpeg is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + */
> +
> +/**
> + * @file
> + * MPEG-7 video signature calculation and lookup filter
> + */
> +
> +#include <float.h>
> +#include "libavutil/opt.h"
> +#include "libavutil/timestamp.h"
> +#include "avfilter.h"
> +#include "internal.h"
> +#include <stdbool.h>
> +
> +#define ELEMENT_COUNT 10
> +#define SIGELEM_SIZE 380
> +#define DIFFELEM_SIZE 348 /* SIGELEM_SIZE - elem_a1 - elem_a2 */
> +#define COURSE_SIZE 90
> +
> +typedef struct {
> +    int x;
> +    int y;
> +} Point;
> +
> +typedef struct {
> +    Point up;
> +    Point to;
> +} Block;

missing standard duplicate inclusion guards

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

it is not once nor twice but times without number that the same ideas make
their appearance in the world. -- Aristotle
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