mirror of https://git.videolan.org/git/ffmpeg.git
113 lines
3.0 KiB
C
113 lines
3.0 KiB
C
/*
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* Copyright (c) 2007 Benoit Fouet
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* Copyright (c) 2010 Stefano Sabatini
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVFILTER_HFLIP_INIT_H
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#define AVFILTER_HFLIP_INIT_H
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#include <stdint.h>
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#include "config.h"
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#include "libavutil/attributes.h"
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#include "libavutil/error.h"
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#include "libavutil/intreadwrite.h"
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#include "hflip.h"
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static void hflip_byte_c(const uint8_t *src, uint8_t *dst, int w)
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{
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for (int j = 0; j < w; j++)
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dst[j] = src[-j];
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}
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static void hflip_short_c(const uint8_t *ssrc, uint8_t *ddst, int w)
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{
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const uint16_t *src = (const uint16_t *)ssrc;
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uint16_t *dst = (uint16_t *)ddst;
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for (int j = 0; j < w; j++)
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dst[j] = src[-j];
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}
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static void hflip_dword_c(const uint8_t *ssrc, uint8_t *ddst, int w)
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{
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const uint32_t *src = (const uint32_t *)ssrc;
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uint32_t *dst = (uint32_t *)ddst;
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for (int j = 0; j < w; j++)
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dst[j] = src[-j];
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}
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static void hflip_b24_c(const uint8_t *src, uint8_t *dst, int w)
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{
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const uint8_t *in = src;
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uint8_t *out = dst;
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for (int j = 0; j < w; j++, out += 3, in -= 3) {
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int32_t v = AV_RB24(in);
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AV_WB24(out, v);
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}
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}
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static void hflip_b48_c(const uint8_t *src, uint8_t *dst, int w)
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{
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const uint8_t *in = src;
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uint8_t *out = dst;
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for (int j = 0; j < w; j++, out += 6, in -= 6) {
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int64_t v = AV_RB48(in);
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AV_WB48(out, v);
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}
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}
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static void hflip_qword_c(const uint8_t *ssrc, uint8_t *ddst, int w)
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{
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const uint64_t *src = (const uint64_t *)ssrc;
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uint64_t *dst = (uint64_t *)ddst;
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for (int j = 0; j < w; j++)
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dst[j] = src[-j];
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}
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static av_unused int ff_hflip_init(FlipContext *s, int step[4], int nb_planes)
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{
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for (int i = 0; i < nb_planes; i++) {
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step[i] *= s->bayer_plus1;
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switch (step[i]) {
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case 1: s->flip_line[i] = hflip_byte_c; break;
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case 2: s->flip_line[i] = hflip_short_c; break;
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case 3: s->flip_line[i] = hflip_b24_c; break;
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case 4: s->flip_line[i] = hflip_dword_c; break;
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case 6: s->flip_line[i] = hflip_b48_c; break;
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case 8: s->flip_line[i] = hflip_qword_c; break;
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default:
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return AVERROR_BUG;
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}
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}
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#if ARCH_X86
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ff_hflip_init_x86(s, step, nb_planes);
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#endif
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return 0;
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}
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#endif /* AVFILTER_HFLIP_INIT_H */
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