313 lines
12 KiB
C
313 lines
12 KiB
C
/*
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* Copyright (c) 2015 Niklas Haas
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* Copyright (c) 2015 Paul B Mahol
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.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 DebandContext {
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const AVClass *class;
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float threshold[4];
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int range;
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int blur;
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float direction;
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int nb_components;
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int planewidth[4];
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int planeheight[4];
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int thr[4];
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int *x_pos;
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int *y_pos;
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int (*deband)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
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} DebandContext;
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#define OFFSET(x) offsetof(DebandContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption deband_options[] = {
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{ "1thr", "set 1st plane threshold", OFFSET(threshold[0]), AV_OPT_TYPE_FLOAT, {.dbl=0.02}, 0.00003, 0.5, FLAGS },
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{ "2thr", "set 2nd plane threshold", OFFSET(threshold[1]), AV_OPT_TYPE_FLOAT, {.dbl=0.02}, 0.00003, 0.5, FLAGS },
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{ "3thr", "set 3rd plane threshold", OFFSET(threshold[2]), AV_OPT_TYPE_FLOAT, {.dbl=0.02}, 0.00003, 0.5, FLAGS },
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{ "4thr", "set 4th plane threshold", OFFSET(threshold[3]), AV_OPT_TYPE_FLOAT, {.dbl=0.02}, 0.00003, 0.5, FLAGS },
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{ "range", "set range", OFFSET(range), AV_OPT_TYPE_INT, {.i64=16}, INT_MIN, INT_MAX, FLAGS },
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{ "r", "set range", OFFSET(range), AV_OPT_TYPE_INT, {.i64=16}, INT_MIN, INT_MAX, FLAGS },
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{ "direction", "set direction", OFFSET(direction), AV_OPT_TYPE_FLOAT, {.dbl=2*M_PI},-2*M_PI, 2*M_PI, FLAGS },
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{ "d", "set direction", OFFSET(direction), AV_OPT_TYPE_FLOAT, {.dbl=2*M_PI},-2*M_PI, 2*M_PI, FLAGS },
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{ "blur", "set blur", OFFSET(blur), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(deband);
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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_GRAY16,
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P,
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AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
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AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ440P,
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AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
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AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
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AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
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AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
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AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
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AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
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AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
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AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14,
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AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16,
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AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
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AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, 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 float frand(int x, int y)
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{
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const float r = sinf(x * 12.9898 + y * 78.233) * 43758.545;
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return r - floorf(r);
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}
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static int inline get_avg(int ref0, int ref1, int ref2, int ref3)
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{
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return (ref0 + ref1 + ref2 + ref3) / 4;
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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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static int deband_8_c(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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DebandContext *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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int x, y, p;
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for (p = 0; p < s->nb_components; p++) {
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const uint8_t *src_ptr = (const uint8_t *)in->data[p];
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uint8_t *dst_ptr = (uint8_t *)out->data[p];
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const int dst_linesize = out->linesize[p];
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const int src_linesize = in->linesize[p];
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const int thr = s->thr[p];
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const int start = (s->planeheight[p] * jobnr ) / nb_jobs;
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const int end = (s->planeheight[p] * (jobnr+1)) / nb_jobs;
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const int w = s->planewidth[p] - 1;
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const int h = s->planeheight[p] - 1;
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for (y = start; y < end; y++) {
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const int pos = y * s->planeheight[0];
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for (x = 0; x < s->planewidth[p]; x++) {
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const int x_pos = s->x_pos[pos + x];
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const int y_pos = s->y_pos[pos + x];
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const int ref0 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)];
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const int ref1 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)];
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const int ref2 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
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const int ref3 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
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const int src0 = src_ptr[y * src_linesize + x];
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if (s->blur) {
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const int avg = get_avg(ref0, ref1, ref2, ref3);
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const int diff = FFABS(src0 - avg);
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dst_ptr[y * dst_linesize + x] = diff < thr ? avg : src0;
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} else {
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dst_ptr[y * dst_linesize + x] = (FFABS(src0 - ref0) < thr) &&
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(FFABS(src0 - ref1) < thr) &&
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(FFABS(src0 - ref2) < thr) &&
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(FFABS(src0 - ref3) < thr) ? get_avg(ref0, ref1, ref2, ref3) : src0;
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}
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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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static int deband_16_c(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
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DebandContext *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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int x, y, p;
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for (p = 0; p < s->nb_components; p++) {
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const uint16_t *src_ptr = (const uint16_t *)in->data[p];
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uint16_t *dst_ptr = (uint16_t *)out->data[p];
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const int dst_linesize = out->linesize[p] / 2;
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const int src_linesize = in->linesize[p] / 2;
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const int thr = s->thr[p];
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const int start = (s->planeheight[p] * jobnr ) / nb_jobs;
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const int end = (s->planeheight[p] * (jobnr+1)) / nb_jobs;
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const int w = s->planewidth[p] - 1;
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const int h = s->planeheight[p] - 1;
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for (y = start; y < end; y++) {
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const int pos = y * s->planeheight[0];
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for (x = 0; x < s->planewidth[p]; x++) {
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const int x_pos = s->x_pos[pos + x];
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const int y_pos = s->y_pos[pos + x];
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const int ref0 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)];
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const int ref1 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + x_pos, 0, w)];
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const int ref2 = src_ptr[av_clip(y + -y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
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const int ref3 = src_ptr[av_clip(y + y_pos, 0, h) * src_linesize + av_clip(x + -x_pos, 0, w)];
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const int src0 = src_ptr[y * src_linesize + x];
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if (s->blur) {
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const int avg = get_avg(ref0, ref1, ref2, ref3);
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const int diff = FFABS(src0 - avg);
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dst_ptr[y * dst_linesize + x] = diff < thr ? avg : src0;
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} else {
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dst_ptr[y * dst_linesize + x] = (FFABS(src0 - ref0) < thr) &&
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(FFABS(src0 - ref1) < thr) &&
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(FFABS(src0 - ref2) < thr) &&
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(FFABS(src0 - ref3) < thr) ? get_avg(ref0, ref1, ref2, ref3) : src0;
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}
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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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static int config_input(AVFilterLink *inlink)
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{
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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AVFilterContext *ctx = inlink->dst;
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DebandContext *s = ctx->priv;
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const float direction = s->direction;
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const int range = s->range;
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int x, y;
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s->nb_components = desc->nb_components;
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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->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->deband = desc->comp[0].depth > 8 ? deband_16_c : deband_8_c;
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s->thr[0] = ((1 << desc->comp[0].depth) - 1) * s->threshold[0];
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s->thr[1] = ((1 << desc->comp[1].depth) - 1) * s->threshold[1];
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s->thr[2] = ((1 << desc->comp[2].depth) - 1) * s->threshold[2];
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s->thr[3] = ((1 << desc->comp[3].depth) - 1) * s->threshold[3];
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s->x_pos = av_malloc(s->planewidth[0] * s->planeheight[0] * sizeof(*s->x_pos));
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s->y_pos = av_malloc(s->planewidth[0] * s->planeheight[0] * sizeof(*s->y_pos));
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if (!s->x_pos || !s->y_pos)
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return AVERROR(ENOMEM);
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for (y = 0; y < s->planeheight[0]; y++) {
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for (x = 0; x < s->planewidth[0]; x++) {
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const float r = frand(x, y);
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const float dir = direction < 0 ? -direction : r * direction;
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const int dist = range < 0 ? -range : r * range;
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s->x_pos[y * s->planeheight[0] + x] = cosf(dir) * dist;
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s->y_pos[y * s->planeheight[0] + x] = sinf(dir) * dist;
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}
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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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AVFilterLink *outlink = ctx->outputs[0];
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DebandContext *s = ctx->priv;
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AVFrame *out;
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ThreadData td;
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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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td.in = in; td.out = out;
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ctx->internal->execute(ctx, s->deband, &td, NULL, FFMIN3(s->planeheight[1],
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s->planeheight[2],
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ff_filter_get_nb_threads(ctx)));
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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 av_cold void uninit(AVFilterContext *ctx)
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{
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DebandContext *s = ctx->priv;
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av_freep(&s->x_pos);
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av_freep(&s->y_pos);
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}
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static const AVFilterPad avfilter_vf_deband_inputs[] = {
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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_input,
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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 avfilter_vf_deband_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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AVFilter ff_vf_deband = {
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.name = "deband",
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.description = NULL_IF_CONFIG_SMALL("Debands video."),
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.priv_size = sizeof(DebandContext),
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.priv_class = &deband_class,
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.uninit = uninit,
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.query_formats = query_formats,
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.inputs = avfilter_vf_deband_inputs,
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.outputs = avfilter_vf_deband_outputs,
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
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};
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