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/*
* Copyright (c) 2016 Paul B Mahol
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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
*/
#ifndef AVFILTER_THRESHOLD_INIT_H
#define AVFILTER_THRESHOLD_INIT_H
#include <stdint.h>
#include <stddef.h>
#include "config.h"
#include "libavutil/attributes.h"
#include "threshold.h"
static void threshold8(const uint8_t *in, const uint8_t *threshold,
const uint8_t *min, const uint8_t *max,
uint8_t *out,
ptrdiff_t ilinesize, ptrdiff_t tlinesize,
ptrdiff_t flinesize, ptrdiff_t slinesize,
ptrdiff_t olinesize,
int w, int h)
{
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++)
out[x] = in[x] < threshold[x] ? min[x] : max[x];
in += ilinesize;
threshold += tlinesize;
min += flinesize;
max += slinesize;
out += olinesize;
}
}
static void threshold16(const uint8_t *iin, const uint8_t *tthreshold,
const uint8_t *ffirst, const uint8_t *ssecond,
uint8_t *oout,
ptrdiff_t ilinesize, ptrdiff_t tlinesize,
ptrdiff_t flinesize, ptrdiff_t slinesize,
ptrdiff_t olinesize,
int w, int h)
{
const uint16_t *in = (const uint16_t *)iin;
const uint16_t *threshold = (const uint16_t *)tthreshold;
const uint16_t *min = (const uint16_t *)ffirst;
const uint16_t *max = (const uint16_t *)ssecond;
uint16_t *out = (uint16_t *)oout;
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++)
out[x] = in[x] < threshold[x] ? min[x] : max[x];
in += ilinesize / 2;
threshold += tlinesize / 2;
min += flinesize / 2;
max += slinesize / 2;
out += olinesize / 2;
}
}
static av_unused void ff_threshold_init(ThresholdContext *s)
{
if (s->depth == 8) {
s->threshold = threshold8;
s->bpc = 1;
} else {
s->threshold = threshold16;
s->bpc = 2;
}
#if ARCH_X86
ff_threshold_init_x86(s);
#endif
}
#endif /* AVFILTER_THRESHOLD_INIT_H */
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