288 lines
11 KiB
C
288 lines
11 KiB
C
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/*
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* Copyright (c) 2018 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 MaskFunContext {
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const AVClass *class;
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int low, high;
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int planes;
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int fill;
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int sum;
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int linesize[4];
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int width[4], height[4];
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int nb_planes;
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int depth;
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int max;
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uint64_t max_sum;
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AVFrame *empty;
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int (*getsum)(AVFilterContext *ctx, AVFrame *out);
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int (*maskfun)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
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} MaskFunContext;
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#define OFFSET(x) offsetof(MaskFunContext, x)
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#define VF AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption maskfun_options[] = {
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{ "low", "set low threshold", OFFSET(low), AV_OPT_TYPE_INT, {.i64=10}, 0, UINT16_MAX, VF },
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{ "high", "set high threshold", OFFSET(high), AV_OPT_TYPE_INT, {.i64=10}, 0, UINT16_MAX, VF },
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{ "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, VF },
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{ "fill", "set fill value", OFFSET(fill), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, VF },
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{ "sum", "set sum value", OFFSET(sum), AV_OPT_TYPE_INT, {.i64=10}, 0, UINT16_MAX, VF },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(maskfun);
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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_YUV444P, AV_PIX_FMT_YUV440P,
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AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
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AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
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AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
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AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
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AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
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AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
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AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
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AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
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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_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
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AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
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AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
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AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
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AV_PIX_FMT_NONE
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};
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return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
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{
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AVFilterContext *ctx = inlink->dst;
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MaskFunContext *s = ctx->priv;
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AVFilterLink *outlink = ctx->outputs[0];
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if (s->getsum(ctx, frame)) {
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AVFrame *out = av_frame_clone(s->empty);
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if (!out) {
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av_frame_free(&frame);
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return AVERROR(ENOMEM);
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}
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out->pts = frame->pts;
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av_frame_free(&frame);
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return ff_filter_frame(outlink, out);
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}
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ctx->internal->execute(ctx, s->maskfun, frame, NULL,
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FFMIN(s->height[1], ff_filter_get_nb_threads(ctx)));
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return ff_filter_frame(outlink, frame);
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}
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#define GETSUM(name, type, div) \
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static int getsum##name(AVFilterContext *ctx, AVFrame *out) \
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{ \
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MaskFunContext *s = ctx->priv; \
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uint64_t sum = 0; \
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int p; \
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\
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for (p = 0; p < s->nb_planes; p++) { \
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const int linesize = out->linesize[p] / div; \
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const int w = s->width[p]; \
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const int h = s->height[p]; \
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type *dst = (type *)out->data[p]; \
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\
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if (!((1 << p) & s->planes)) \
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continue; \
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\
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for (int y = 0; y < h; y++) { \
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for (int x = 0; x < w; x++) \
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sum += dst[x]; \
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if (sum >= s->max_sum) \
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return 1; \
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dst += linesize; \
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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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GETSUM(8, uint8_t, 1)
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GETSUM(16, uint16_t, 2)
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#define MASKFUN(name, type, div) \
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static int maskfun##name(AVFilterContext *ctx, void *arg, \
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int jobnr, int nb_jobs) \
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{ \
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MaskFunContext *s = ctx->priv; \
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AVFrame *out = arg; \
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const int low = s->low; \
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const int high = s->high; \
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const int max = s->max; \
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int p; \
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\
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for (p = 0; p < s->nb_planes; p++) { \
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const int linesize = out->linesize[p] / div; \
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const int w = s->width[p]; \
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const int h = s->height[p]; \
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const int slice_start = (h * jobnr) / nb_jobs; \
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const int slice_end = (h * (jobnr+1)) / nb_jobs; \
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type *dst = (type *)out->data[p] + slice_start * linesize; \
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\
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if (!((1 << p) & s->planes)) \
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continue; \
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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 < w; x++) { \
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if (dst[x] <= low) \
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dst[x] = 0; \
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else if (dst[x] > high) \
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dst[x] = max; \
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} \
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\
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dst += linesize; \
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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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MASKFUN(8, uint8_t, 1)
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MASKFUN(16, uint16_t, 2)
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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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MaskFunContext *s = ctx->priv;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
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int vsub, hsub, ret;
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s->nb_planes = av_pix_fmt_count_planes(inlink->format);
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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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hsub = desc->log2_chroma_w;
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vsub = desc->log2_chroma_h;
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s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
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s->height[0] = s->height[3] = inlink->h;
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s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
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s->width[0] = s->width[3] = inlink->w;
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s->depth = desc->comp[0].depth;
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s->max = (1 << s->depth) - 1;
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s->fill = FFMIN(s->fill, s->max);
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if (s->depth == 8) {
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s->maskfun = maskfun8;
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s->getsum = getsum8;
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} else {
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s->maskfun = maskfun16;
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s->getsum = getsum16;
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}
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s->empty = ff_get_video_buffer(inlink, inlink->w, inlink->h);
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if (!s->empty)
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return AVERROR(ENOMEM);
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if (s->depth == 8) {
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for (int p = 0; p < s->nb_planes; p++) {
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uint8_t *dst = s->empty->data[p];
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for (int y = 0; y < s->height[p]; y++) {
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memset(dst, s->fill, s->width[p]);
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dst += s->empty->linesize[p];
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}
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}
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} else {
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for (int p = 0; p < s->nb_planes; p++) {
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uint16_t *dst = (uint16_t *)s->empty->data[p];
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for (int y = 0; y < s->height[p]; y++) {
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for (int x = 0; x < s->width[p]; x++)
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dst[x] = s->fill;
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dst += s->empty->linesize[p] / 2;
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}
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}
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}
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s->max_sum = 0;
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for (int p = 0; p < s->nb_planes; p++) {
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if (!((1 << p) & s->planes))
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continue;
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s->max_sum += (uint64_t)s->sum * s->width[p] * s->height[p];
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}
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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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MaskFunContext *s = ctx->priv;
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av_frame_free(&s->empty);
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}
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static const AVFilterPad maskfun_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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.needs_writable = 1,
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},
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{ NULL }
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};
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static const AVFilterPad maskfun_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_maskfun = {
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.name = "maskfun",
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.description = NULL_IF_CONFIG_SMALL("Create Mask."),
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.priv_size = sizeof(MaskFunContext),
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.query_formats = query_formats,
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.uninit = uninit,
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.inputs = maskfun_inputs,
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.outputs = maskfun_outputs,
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.priv_class = &maskfun_class,
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
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};
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