Signed-off-by: Paul B Mahol <onemda@gmail.com>pull/140/head
Paul B Mahol
10 years ago
parent
a39512ba9e
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3001558487
6 changed files with 424 additions and 1 deletions
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/*
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* Copyright (c) 2012-2013 Oka Motofumi (chikuzen.mo at gmail dot com) |
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* Copyright (c) 2015 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/imgutils.h" |
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#include "libavutil/pixdesc.h" |
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#include "libavutil/opt.h" |
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#include "avfilter.h" |
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#include "formats.h" |
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#include "internal.h" |
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#include "video.h" |
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typedef struct NContext { |
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const AVClass *class; |
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int planeheight[4]; |
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int planewidth[4]; |
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int nb_planes; |
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int threshold[4]; |
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int coordinates; |
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uint8_t *buffer; |
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void (*filter)(uint8_t *dst, const uint8_t *p1, int width, |
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int threshold, const uint8_t *coordinates[], int coord); |
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} NContext; |
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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_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P, |
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AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P, |
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, |
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE |
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}; |
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ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); |
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return 0; |
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} |
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static av_cold void uninit(AVFilterContext *ctx) |
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{ |
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NContext *s = ctx->priv; |
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av_freep(&s->buffer); |
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} |
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static inline void line_copy8(uint8_t *line, const uint8_t *srcp, int width, int mergin) |
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{ |
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int i; |
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memcpy(line, srcp, width); |
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for (i = mergin; i > 0; i--) { |
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line[-i] = line[i]; |
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line[width - 1 + i] = line[width - 1 - i]; |
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} |
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} |
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static void erosion(uint8_t *dst, const uint8_t *p1, int width, |
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int threshold, const uint8_t *coordinates[], int coord) |
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{ |
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int x, i; |
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for (x = 0; x < width; x++) { |
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int min = p1[x]; |
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int limit = FFMAX(min - threshold, 0); |
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for (i = 0; i < 8; i++) { |
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if (coord & (1 << i)) { |
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min = FFMIN(min, *(coordinates[i] + x)); |
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} |
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min = FFMAX(min, limit); |
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} |
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dst[x] = min; |
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} |
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} |
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static void dilation(uint8_t *dst, const uint8_t *p1, int width, |
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int threshold, const uint8_t *coordinates[], int coord) |
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{ |
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int x, i; |
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for (x = 0; x < width; x++) { |
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int max = p1[x]; |
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int limit = FFMIN(max + threshold, 255); |
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for (i = 0; i < 8; i++) { |
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if (coord & (1 << i)) { |
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max = FFMAX(max, *(coordinates[i] + x)); |
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} |
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max = FFMIN(max, limit); |
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} |
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dst[x] = max; |
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} |
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} |
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static void deflate(uint8_t *dst, const uint8_t *p1, int width, |
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int threshold, const uint8_t *coordinates[], int coord) |
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{ |
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int x, i; |
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for (x = 0; x < width; x++) { |
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int sum = 0; |
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int limit = FFMAX(p1[x] - threshold, 0); |
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for (i = 0; i < 8; sum += *(coordinates[i++] + x)); |
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dst[x] = FFMAX(FFMIN(sum / 8, p1[x]), limit); |
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} |
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} |
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static void inflate(uint8_t *dst, const uint8_t *p1, int width, |
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int threshold, const uint8_t *coordinates[], int coord) |
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{ |
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int x, i; |
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for (x = 0; x < width; x++) { |
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int sum = 0; |
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int limit = FFMIN(p1[x] + threshold, 255); |
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for (i = 0; i < 8; sum += *(coordinates[i++] + x)); |
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dst[x] = FFMIN(FFMAX(sum / 8, p1[x]), limit); |
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} |
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} |
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static int config_input(AVFilterLink *inlink) |
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{ |
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AVFilterContext *ctx = inlink->dst; |
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NContext *s = ctx->priv; |
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
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int ret; |
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if ((ret = av_image_fill_linesizes(s->planewidth, inlink->format, inlink->w)) < 0) |
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return ret; |
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s->planeheight[1] = s->planeheight[2] = FF_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->nb_planes = av_pix_fmt_count_planes(inlink->format); |
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s->buffer = av_malloc(3 * (s->planewidth[0] + 32)); |
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if (!s->buffer) |
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return AVERROR(ENOMEM); |
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if (!strcmp(ctx->filter->name, "erosion")) |
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s->filter = erosion; |
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else if (!strcmp(ctx->filter->name, "dilation")) |
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s->filter = dilation; |
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else if (!strcmp(ctx->filter->name, "deflate")) |
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s->filter = deflate; |
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else if (!strcmp(ctx->filter->name, "inflate")) |
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s->filter = inflate; |
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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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AVFilterLink *outlink = ctx->outputs[0]; |
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NContext *s = ctx->priv; |
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AVFrame *out; |
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int plane, y; |
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
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if (!out) { |
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av_frame_free(&in); |
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return AVERROR(ENOMEM); |
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} |
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av_frame_copy_props(out, in); |
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for (plane = 0; plane < s->nb_planes; plane++) { |
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const int threshold = s->threshold[plane]; |
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if (threshold) { |
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const uint8_t *src = in->data[plane]; |
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uint8_t *dst = out->data[plane]; |
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int stride = in->linesize[plane]; |
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int height = s->planeheight[plane]; |
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int width = s->planewidth[plane]; |
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uint8_t *p0 = s->buffer + 16; |
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uint8_t *p1 = p0 + s->planewidth[0]; |
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uint8_t *p2 = p1 + s->planewidth[0]; |
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uint8_t *orig = p0, *end = p2; |
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line_copy8(p0, src + stride, width, 1); |
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line_copy8(p1, src, width, 1); |
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for (y = 0; y < height; y++) { |
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const uint8_t *coordinates[] = { p0 - 1, p0, p0 + 1, |
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p1 - 1, p1 + 1, |
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p2 - 1, p2, p2 + 1}; |
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src += stride * (y < height - 1 ? 1 : -1); |
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line_copy8(p2, src, width, 1); |
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s->filter(dst, p1, width, threshold, coordinates, s->coordinates); |
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p0 = p1; |
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p1 = p2; |
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p2 = (p2 == end) ? orig: p2 + s->planewidth[0]; |
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dst += out->linesize[plane]; |
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} |
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} else { |
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av_image_copy_plane(out->data[plane], out->linesize[plane], |
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in->data[plane], in->linesize[plane], |
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s->planewidth[plane], s->planeheight[plane]); |
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} |
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} |
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av_frame_free(&in); |
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return ff_filter_frame(outlink, out); |
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} |
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static const AVFilterPad neighbor_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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.config_props = config_input, |
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}, |
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{ NULL } |
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}; |
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static const AVFilterPad neighbor_outputs[] = { |
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{ |
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.name = "default", |
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.type = AVMEDIA_TYPE_VIDEO, |
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}, |
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{ NULL } |
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}; |
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#define OFFSET(x) offsetof(NContext, x) |
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
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#define DEFINE_NEIGHBOR_FILTER(name_, description_) \ |
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AVFILTER_DEFINE_CLASS(name_); \
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\
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AVFilter ff_vf_##name_ = { \
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.name = #name_, \
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.description = NULL_IF_CONFIG_SMALL(description_), \
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.priv_size = sizeof(NContext), \
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.priv_class = &name_##_class, \
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.uninit = uninit, \
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.query_formats = query_formats, \
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.inputs = neighbor_inputs, \
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.outputs = neighbor_outputs, \
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, \
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} |
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#if CONFIG_EROSION_FILTER |
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static const AVOption erosion_options[] = { |
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{ "threshold0", "set threshold for 1st plane", OFFSET(threshold[0]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS }, |
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{ "threshold1", "set threshold for 2nd plane", OFFSET(threshold[1]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS }, |
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{ "threshold2", "set threshold for 3rd plane", OFFSET(threshold[2]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS }, |
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{ "threshold3", "set threshold for 4th plane", OFFSET(threshold[3]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS }, |
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{ "coordinates", "set coordinates", OFFSET(coordinates), AV_OPT_TYPE_INT, {.i64=255}, 0, 255, FLAGS }, |
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{ NULL } |
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}; |
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DEFINE_NEIGHBOR_FILTER(erosion, "Apply erosion effect"); |
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#endif /* CONFIG_EROSION_FILTER */ |
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#if CONFIG_DILATION_FILTER |
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static const AVOption dilation_options[] = { |
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{ "threshold0", "set threshold for 1st plane", OFFSET(threshold[0]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS }, |
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{ "threshold1", "set threshold for 2nd plane", OFFSET(threshold[1]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS }, |
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{ "threshold2", "set threshold for 3rd plane", OFFSET(threshold[2]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS }, |
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{ "threshold3", "set threshold for 4th plane", OFFSET(threshold[3]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS }, |
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{ "coordinates", "set coordinates", OFFSET(coordinates), AV_OPT_TYPE_INT, {.i64=255}, 0, 255, FLAGS }, |
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{ NULL } |
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}; |
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DEFINE_NEIGHBOR_FILTER(dilation, "Apply dilation effect"); |
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#endif /* CONFIG_DILATION_FILTER */ |
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#if CONFIG_DEFLATE_FILTER |
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static const AVOption deflate_options[] = { |
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{ "threshold0", "set threshold for 1st plane", OFFSET(threshold[0]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS }, |
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{ "threshold1", "set threshold for 2nd plane", OFFSET(threshold[1]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS }, |
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{ "threshold2", "set threshold for 3rd plane", OFFSET(threshold[2]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS }, |
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{ "threshold3", "set threshold for 4th plane", OFFSET(threshold[3]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS }, |
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{ NULL } |
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}; |
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DEFINE_NEIGHBOR_FILTER(deflate, "Apply deflate effect"); |
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#endif /* CONFIG_DEFLATE_FILTER */ |
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#if CONFIG_INFLATE_FILTER |
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static const AVOption inflate_options[] = { |
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{ "threshold0", "set threshold for 1st plane", OFFSET(threshold[0]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS }, |
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{ "threshold1", "set threshold for 2nd plane", OFFSET(threshold[1]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS }, |
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{ "threshold2", "set threshold for 3rd plane", OFFSET(threshold[2]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS }, |
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{ "threshold3", "set threshold for 4th plane", OFFSET(threshold[3]), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, FLAGS }, |
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{ NULL } |
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}; |
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DEFINE_NEIGHBOR_FILTER(inflate, "Apply inflate effect"); |
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#endif /* CONFIG_INFLATE_FILTER */ |
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