mirror of
https://github.com/FFmpeg/FFmpeg.git
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457 lines
18 KiB
C
457 lines
18 KiB
C
/*
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* Copyright (c) 2020 Paul B Mahol
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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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#include "libavutil/avassert.h"
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#include "libavutil/avstring.h"
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#include "libavutil/common.h"
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#include "libavutil/internal.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/lfg.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/random_seed.h"
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#include "avfilter.h"
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#include "internal.h"
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#include "video.h"
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typedef struct ShufflePixelsContext {
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const AVClass *class;
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int block_w, block_h;
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int mode;
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int direction;
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int64_t seed;
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int depth;
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int nb_planes;
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int linesize[4];
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int planewidth[4];
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int planeheight[4];
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int nb_blocks;
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uint8_t *used;
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int32_t *map;
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AVLFG c;
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int (*shuffle_pixels)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
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} ShufflePixelsContext;
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static int query_formats(AVFilterContext *ctx)
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{
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static const enum AVPixelFormat pix_fmts[] = {
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AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P,
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10,
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AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
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AV_PIX_FMT_GBRAP16, AV_PIX_FMT_GBRAP,
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AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUVA444P10,
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AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUVA444P16,
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AV_PIX_FMT_NONE
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};
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AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
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if (!fmts_list)
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return AVERROR(ENOMEM);
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return ff_set_common_formats(ctx, fmts_list);
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}
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static void make_horizontal_map(AVFilterContext *ctx)
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{
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ShufflePixelsContext *s = ctx->priv;
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const int nb_blocks = s->nb_blocks;
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AVLFG *c = &s->c;
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uint8_t *used = s->used;
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int32_t *map = s->map;
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for (int x = 0; x < s->planewidth[0];) {
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int rand = av_lfg_get(c) % nb_blocks;
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if (used[rand] == 0) {
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int width;
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if (s->direction) {
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width = FFMIN(s->block_w, s->planewidth[0] - x);
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map[rand * s->block_w] = x;
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} else {
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width = FFMIN(s->block_w, s->planewidth[0] - rand * s->block_w);
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map[x] = rand * s->block_w;
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}
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used[rand] = 1;
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if (s->direction) {
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for (int i = 1; i < width; i++) {
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map[rand * s->block_w + i] = map[rand * s->block_w] + i;
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}
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} else {
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for (int i = 1; i < width; i++) {
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map[x + i] = map[x] + i;
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}
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}
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x += width;
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}
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}
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}
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static void make_vertical_map(AVFilterContext *ctx)
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{
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ShufflePixelsContext *s = ctx->priv;
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const int nb_blocks = s->nb_blocks;
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AVLFG *c = &s->c;
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uint8_t *used = s->used;
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int32_t *map = s->map;
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for (int y = 0; y < s->planeheight[0];) {
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int rand = av_lfg_get(c) % nb_blocks;
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if (used[rand] == 0) {
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int height;
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if (s->direction) {
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height = FFMIN(s->block_h, s->planeheight[0] - y);
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map[rand * s->block_h] = y;
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} else {
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height = FFMIN(s->block_h, s->planeheight[0] - rand * s->block_h);
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map[y] = rand * s->block_h;
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}
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used[rand] = 1;
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if (s->direction) {
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for (int i = 1; i < height; i++) {
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map[rand * s->block_h + i] = map[rand * s->block_h] + i;
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}
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} else {
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for (int i = 1; i < height; i++) {
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map[y + i] = map[y] + i;
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}
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}
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y += height;
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}
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}
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}
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static void make_block_map(AVFilterContext *ctx)
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{
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ShufflePixelsContext *s = ctx->priv;
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const int nb_blocks = s->nb_blocks;
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int nb_blocks_w = s->planewidth[0] / s->block_w;
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AVLFG *c = &s->c;
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uint8_t *used = s->used;
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int32_t *map = s->map;
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for (int i = 0; i < nb_blocks;) {
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int rand = av_lfg_get(c) % nb_blocks;
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if (used[rand] == 0) {
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int yin = i / nb_blocks_w;
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int xin = i % nb_blocks_w;
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int in = yin * s->block_h * s->planewidth[0] + xin * s->block_w;
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int yout = rand / nb_blocks_w;
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int xout = rand % nb_blocks_w;
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int out = yout * s->block_h * s->planewidth[0] + xout * s->block_w;
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if (s->direction) {
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map[out] = in;
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} else {
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map[in] = out;
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}
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used[rand] = 1;
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if (s->direction) {
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for (int y = 0; y < s->block_h; y++) {
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for (int x = 0; x < s->block_w; x++) {
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map[out + y * s->planewidth[0] + x] = map[out] + x + y * s->planewidth[0];
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}
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}
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} else {
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for (int y = 0; y < s->block_h; y++) {
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for (int x = 0; x < s->block_w; x++) {
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map[in + y * s->planewidth[0] + x] = map[in] + x + y * s->planewidth[0];
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}
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}
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}
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i++;
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}
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}
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}
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typedef struct ThreadData {
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AVFrame *in, *out;
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} ThreadData;
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#define SHUFFLE_HORIZONTAL(name, type) \
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static int shuffle_horizontal## name(AVFilterContext *ctx, void *arg, \
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int jobnr, int nb_jobs) \
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{ \
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ShufflePixelsContext *s = ctx->priv; \
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ThreadData *td = arg; \
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AVFrame *in = td->in; \
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AVFrame *out = td->out; \
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\
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for (int p = 0; p < s->nb_planes; p++) { \
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const int slice_start = (s->planeheight[p] * jobnr) / nb_jobs; \
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const int slice_end = (s->planeheight[p] * (jobnr+1)) / nb_jobs; \
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type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
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const type *src = (const type *)(in->data[p] + \
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slice_start * in->linesize[p]); \
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const int32_t *map = s->map; \
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\
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for (int y = slice_start; y < slice_end; y++) { \
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for (int x = 0; x < s->planewidth[p]; x++) { \
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dst[x] = src[map[x]]; \
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} \
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\
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dst += out->linesize[p] / sizeof(type); \
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src += in->linesize[p] / sizeof(type); \
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} \
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} \
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\
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return 0; \
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}
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SHUFFLE_HORIZONTAL(8, uint8_t)
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SHUFFLE_HORIZONTAL(16, uint16_t)
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#define SHUFFLE_VERTICAL(name, type) \
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static int shuffle_vertical## name(AVFilterContext *ctx, void *arg, \
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int jobnr, int nb_jobs) \
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{ \
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ShufflePixelsContext *s = ctx->priv; \
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ThreadData *td = arg; \
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AVFrame *in = td->in; \
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AVFrame *out = td->out; \
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\
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for (int p = 0; p < s->nb_planes; p++) { \
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const int slice_start = (s->planeheight[p] * jobnr) / nb_jobs; \
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const int slice_end = (s->planeheight[p] * (jobnr+1)) / nb_jobs; \
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type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
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const int32_t *map = s->map; \
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\
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for (int y = slice_start; y < slice_end; y++) { \
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const type *src = (const type *)(in->data[p] + \
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map[y] * in->linesize[p]); \
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\
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memcpy(dst, src, s->linesize[p]); \
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dst += out->linesize[p] / sizeof(type); \
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} \
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} \
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\
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return 0; \
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}
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SHUFFLE_VERTICAL(8, uint8_t)
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SHUFFLE_VERTICAL(16, uint16_t)
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#define SHUFFLE_BLOCK(name, type) \
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static int shuffle_block## name(AVFilterContext *ctx, void *arg, \
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int jobnr, int nb_jobs) \
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{ \
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ShufflePixelsContext *s = ctx->priv; \
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ThreadData *td = arg; \
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AVFrame *in = td->in; \
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AVFrame *out = td->out; \
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\
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for (int p = 0; p < s->nb_planes; p++) { \
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const int slice_start = (s->planeheight[p] * jobnr) / nb_jobs; \
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const int slice_end = (s->planeheight[p] * (jobnr+1)) / nb_jobs; \
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type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
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const type *src = (const type *)in->data[p]; \
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const int32_t *map = s->map + slice_start * s->planewidth[p]; \
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\
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for (int y = slice_start; y < slice_end; y++) { \
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for (int x = 0; x < s->planewidth[p]; x++) { \
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int ymap = map[x] / s->planewidth[p]; \
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int xmap = map[x] % s->planewidth[p]; \
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\
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dst[x] = src[xmap + ymap * in->linesize[p] / sizeof(type)]; \
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} \
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\
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dst += out->linesize[p] / sizeof(type); \
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map += s->planewidth[p]; \
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} \
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} \
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\
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return 0; \
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}
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SHUFFLE_BLOCK(8, uint8_t)
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SHUFFLE_BLOCK(16, uint16_t)
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static int config_output(AVFilterLink *outlink)
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{
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AVFilterContext *ctx = outlink->src;
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ShufflePixelsContext *s = ctx->priv;
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AVFilterLink *inlink = ctx->inputs[0];
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const AVPixFmtDescriptor *desc;
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int ret;
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if (s->seed == -1)
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s->seed = av_get_random_seed();
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av_lfg_init(&s->c, s->seed);
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desc = av_pix_fmt_desc_get(outlink->format);
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if (!desc)
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return AVERROR_BUG;
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s->nb_planes = av_pix_fmt_count_planes(outlink->format);
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s->depth = desc->comp[0].depth;
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if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
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return ret;
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s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
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s->planewidth[0] = s->planewidth[3] = inlink->w;
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s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
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s->planeheight[0] = s->planeheight[3] = inlink->h;
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s->map = av_calloc(inlink->w * inlink->h, sizeof(*s->map));
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if (!s->map)
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return AVERROR(ENOMEM);
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switch (s->mode) {
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case 0:
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s->shuffle_pixels = s->depth <= 8 ? shuffle_horizontal8 : shuffle_horizontal16;
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s->nb_blocks = (s->planewidth[0] + s->block_w - 1) / s->block_w;
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break;
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case 1:
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s->shuffle_pixels = s->depth <= 8 ? shuffle_vertical8 : shuffle_vertical16;
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s->nb_blocks = (s->planeheight[0] + s->block_h - 1) / s->block_h;
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break;
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case 2:
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s->shuffle_pixels = s->depth <= 8 ? shuffle_block8 : shuffle_block16;
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s->nb_blocks = (s->planeheight[0] / s->block_h) *
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(s->planewidth[0] / s->block_w);
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break;
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default:
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av_assert0(0);
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}
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s->used = av_calloc(s->nb_blocks, sizeof(*s->used));
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if (!s->used)
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return AVERROR(ENOMEM);
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switch (s->mode) {
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case 0:
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make_horizontal_map(ctx);
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break;
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case 1:
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make_vertical_map(ctx);
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break;
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case 2:
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make_block_map(ctx);
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break;
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default:
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av_assert0(0);
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}
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return 0;
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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{
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AVFilterContext *ctx = inlink->dst;
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ShufflePixelsContext *s = ctx->priv;
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AVFrame *out = ff_get_video_buffer(ctx->outputs[0], in->width, in->height);
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ThreadData td;
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int ret;
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ret = av_frame_copy_props(out, in);
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if (ret < 0) {
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av_frame_free(&out);
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goto fail;
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}
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td.out = out;
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td.in = in;
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ctx->internal->execute(ctx, s->shuffle_pixels, &td, NULL, FFMIN(s->planeheight[1], ff_filter_get_nb_threads(ctx)));
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av_frame_free(&in);
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return ff_filter_frame(ctx->outputs[0], out);
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fail:
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av_frame_free(&in);
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return ret;
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}
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static av_cold void uninit(AVFilterContext *ctx)
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{
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ShufflePixelsContext *s = ctx->priv;
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av_freep(&s->map);
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av_freep(&s->used);
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}
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#define OFFSET(x) offsetof(ShufflePixelsContext, x)
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#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
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static const AVOption shufflepixels_options[] = {
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{ "direction", "set shuffle direction", OFFSET(direction), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "dir" },
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{ "d", "set shuffle direction", OFFSET(direction), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "dir" },
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{ "forward", 0, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "dir" },
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{ "inverse", 0, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "dir" },
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{ "mode", "set shuffle mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 2, FLAGS, "mode" },
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{ "m", "set shuffle mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 2, FLAGS, "mode" },
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{ "horizontal", 0, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "mode" },
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{ "vertical", 0, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "mode" },
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{ "block", 0, 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "mode" },
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{ "width", "set block width", OFFSET(block_w), AV_OPT_TYPE_INT, {.i64=10}, 1, 8000, FLAGS },
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{ "w", "set block width", OFFSET(block_w), AV_OPT_TYPE_INT, {.i64=10}, 1, 8000, FLAGS },
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{ "height", "set block height", OFFSET(block_h), AV_OPT_TYPE_INT, {.i64=10}, 1, 8000, FLAGS },
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{ "h", "set block height", OFFSET(block_h), AV_OPT_TYPE_INT, {.i64=10}, 1, 8000, FLAGS },
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{ "seed", "set random seed", OFFSET(seed), AV_OPT_TYPE_INT64, {.i64=-1}, -1, UINT_MAX, FLAGS },
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{ "s", "set random seed", OFFSET(seed), AV_OPT_TYPE_INT64, {.i64=-1}, -1, UINT_MAX, FLAGS },
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{ NULL },
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};
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AVFILTER_DEFINE_CLASS(shufflepixels);
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static const AVFilterPad shufflepixels_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = filter_frame,
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},
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{ NULL },
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};
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static const AVFilterPad shufflepixels_outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.config_props = config_output,
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},
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{ NULL },
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};
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AVFilter ff_vf_shufflepixels = {
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.name = "shufflepixels",
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.description = NULL_IF_CONFIG_SMALL("Shuffle video pixels."),
|
|
.priv_size = sizeof(ShufflePixelsContext),
|
|
.priv_class = &shufflepixels_class,
|
|
.query_formats = query_formats,
|
|
.uninit = uninit,
|
|
.inputs = shufflepixels_inputs,
|
|
.outputs = shufflepixels_outputs,
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
|
|
};
|