[FFmpeg-devel] [PATCH] avfilter: add convolution filter

[Michael Niedermayer]

On Sun, Aug 02, 2015 at 05:35:59PM +0200, Paul B Mahol wrote:
> Signed-off-by: Paul B Mahol <onemda at gmail.com>
> ---
>  doc/filters.texi             |  61 ++++++++
>  libavfilter/Makefile         |   1 +
>  libavfilter/allfilters.c     |   1 +
>  libavfilter/vf_convolution.c | 337 +++++++++++++++++++++++++++++++++++++++++++
>  4 files changed, 400 insertions(+)
>  create mode 100644 libavfilter/vf_convolution.c
[...]
> +            dst[x] = av_clip(sum, 0, 255);
[...]
> +        for (x = 0; x < width; x++) {
> +            int sum = 0;
> +
> +            for (i = 0; i < 25; i++) {
> +                sum += *(array[i] + x) * matrix[i];
> +            }
> +            sum = (int)(sum * rdiv + bias + 0.5f);

> +            dst[x] = av_clip(sum, 0, 255);

av_clip_uint8()



[...]
-- 
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