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/*
* Copyright (c) 2007 Benoit Fouet
* Copyright (c) 2010 Stefano Sabatini
*
* 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_HFLIP_INIT_H
#define AVFILTER_HFLIP_INIT_H
#include <stdint.h>
#include "config.h"
#include "libavutil/attributes.h"
#include "libavutil/error.h"
#include "libavutil/intreadwrite.h"
#include "hflip.h"
static void hflip_byte_c(const uint8_t *src, uint8_t *dst, int w)
{
for (int j = 0; j < w; j++)
dst[j] = src[-j];
}
static void hflip_short_c(const uint8_t *ssrc, uint8_t *ddst, int w)
{
const uint16_t *src = (const uint16_t *)ssrc;
uint16_t *dst = (uint16_t *)ddst;
for (int j = 0; j < w; j++)
dst[j] = src[-j];
}
static void hflip_dword_c(const uint8_t *ssrc, uint8_t *ddst, int w)
{
const uint32_t *src = (const uint32_t *)ssrc;
uint32_t *dst = (uint32_t *)ddst;
for (int j = 0; j < w; j++)
dst[j] = src[-j];
}
static void hflip_b24_c(const uint8_t *src, uint8_t *dst, int w)
{
const uint8_t *in = src;
uint8_t *out = dst;
for (int j = 0; j < w; j++, out += 3, in -= 3) {
int32_t v = AV_RB24(in);
AV_WB24(out, v);
}
}
static void hflip_b48_c(const uint8_t *src, uint8_t *dst, int w)
{
const uint8_t *in = src;
uint8_t *out = dst;
for (int j = 0; j < w; j++, out += 6, in -= 6) {
int64_t v = AV_RB48(in);
AV_WB48(out, v);
}
}
static void hflip_qword_c(const uint8_t *ssrc, uint8_t *ddst, int w)
{
const uint64_t *src = (const uint64_t *)ssrc;
uint64_t *dst = (uint64_t *)ddst;
for (int j = 0; j < w; j++)
dst[j] = src[-j];
}
static av_unused int ff_hflip_init(FlipContext *s, int step[4], int nb_planes)
{
for (int i = 0; i < nb_planes; i++) {
step[i] *= s->bayer_plus1;
switch (step[i]) {
case 1: s->flip_line[i] = hflip_byte_c; break;
case 2: s->flip_line[i] = hflip_short_c; break;
case 3: s->flip_line[i] = hflip_b24_c; break;
case 4: s->flip_line[i] = hflip_dword_c; break;
case 6: s->flip_line[i] = hflip_b48_c; break;
case 8: s->flip_line[i] = hflip_qword_c; break;
default:
return AVERROR_BUG;
}
}
#if ARCH_X86
ff_hflip_init_x86(s, step, nb_planes);
#endif
return 0;
}
#endif /* AVFILTER_HFLIP_INIT_H */
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