| /* |
| * 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 */ |