Paul B Mahol
9 years ago
parent
ebb83e2dc0
commit
acf1dd5b74
6 changed files with 410 additions and 1 deletions
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/*
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* Copyright (c) 2016 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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/**
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* @file |
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* threshold video filter |
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*/ |
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#include "libavutil/imgutils.h" |
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#include "libavutil/internal.h" |
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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 "framesync.h" |
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#include "internal.h" |
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#include "video.h" |
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typedef struct ThresholdContext { |
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const AVClass *class; |
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int planes; |
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int bpc; |
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int nb_planes; |
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int width[4], height[4]; |
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void (*threshold)(const uint8_t *in, const uint8_t *threshold, |
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const uint8_t *min, const uint8_t *max, |
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uint8_t *out, |
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ptrdiff_t ilinesize, ptrdiff_t tlinesize, |
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ptrdiff_t flinesize, ptrdiff_t slinesize, |
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ptrdiff_t olinesize, |
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int w, int h); |
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AVFrame *frames[4]; |
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FFFrameSync fs; |
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} ThresholdContext; |
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#define OFFSET(x) offsetof(ThresholdContext, x) |
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#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
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static const AVOption threshold_options[] = { |
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{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, FLAGS}, |
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{ NULL } |
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}; |
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AVFILTER_DEFINE_CLASS(threshold); |
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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_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_GBRAP16, |
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AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY10, |
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AV_PIX_FMT_GRAY12, 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 process_frame(FFFrameSync *fs) |
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{ |
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AVFilterContext *ctx = fs->parent; |
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ThresholdContext *s = fs->opaque; |
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AVFilterLink *outlink = ctx->outputs[0]; |
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AVFrame *out, *in, *threshold, *min, *max; |
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int ret; |
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if ((ret = ff_framesync_get_frame(&s->fs, 0, &in, 0)) < 0 || |
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(ret = ff_framesync_get_frame(&s->fs, 1, &threshold, 0)) < 0 || |
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(ret = ff_framesync_get_frame(&s->fs, 2, &min, 0)) < 0 || |
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(ret = ff_framesync_get_frame(&s->fs, 3, &max, 0)) < 0) |
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return ret; |
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if (ctx->is_disabled) { |
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out = av_frame_clone(in); |
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if (!out) |
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return AVERROR(ENOMEM); |
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} else { |
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int p; |
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
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if (!out) |
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return AVERROR(ENOMEM); |
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av_frame_copy_props(out, in); |
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for (p = 0; p < s->nb_planes; p++) { |
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if (!(s->planes & (1 << p))) { |
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av_image_copy_plane(out->data[p], out->linesize[p], |
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in->data[p], in->linesize[p], |
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s->width[p] * s->bpc, |
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s->height[p]); |
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continue; |
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} |
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s->threshold(in->data[p], threshold->data[p], |
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min->data[p], max->data[p], |
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out->data[p], |
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in->linesize[p], threshold->linesize[p], |
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min->linesize[p], max->linesize[p], |
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out->linesize[p], |
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s->width[p], s->height[p]); |
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} |
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} |
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out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base); |
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return ff_filter_frame(outlink, out); |
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} |
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static void threshold8(const uint8_t *in, const uint8_t *threshold, |
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const uint8_t *min, const uint8_t *max, |
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uint8_t *out, |
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ptrdiff_t ilinesize, ptrdiff_t tlinesize, |
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ptrdiff_t flinesize, ptrdiff_t slinesize, |
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ptrdiff_t olinesize, |
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int w, int h) |
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{ |
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int x, y; |
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for (y = 0; y < h; y++) { |
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for (x = 0; x < w; x++) { |
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out[x] = in[x] < threshold[x] ? min[x] : max[x]; |
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} |
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in += ilinesize; |
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threshold += tlinesize; |
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min += flinesize; |
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max += flinesize; |
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out += olinesize; |
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} |
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} |
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static void threshold16(const uint8_t *iin, const uint8_t *tthreshold, |
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const uint8_t *ffirst, const uint8_t *ssecond, |
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uint8_t *oout, |
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ptrdiff_t ilinesize, ptrdiff_t tlinesize, |
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ptrdiff_t flinesize, ptrdiff_t slinesize, |
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ptrdiff_t olinesize, |
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int w, int h) |
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{ |
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const uint16_t *in = (const uint16_t *)iin; |
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const uint16_t *threshold = (const uint16_t *)tthreshold; |
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const uint16_t *min = (const uint16_t *)ffirst; |
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const uint16_t *max = (const uint16_t *)ssecond; |
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uint16_t *out = (uint16_t *)oout; |
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int x, y; |
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for (y = 0; y < h; y++) { |
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for (x = 0; x < w; x++) { |
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out[x] = in[x] < threshold[x] ? min[x] : max[x]; |
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} |
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in += ilinesize / 2; |
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threshold += tlinesize / 2; |
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min += flinesize / 2; |
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max += flinesize / 2; |
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out += olinesize / 2; |
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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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ThresholdContext *s = ctx->priv; |
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
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int vsub, hsub; |
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s->nb_planes = av_pix_fmt_count_planes(inlink->format); |
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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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if (desc->comp[0].depth == 8) { |
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s->threshold = threshold8; |
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s->bpc = 1; |
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} else { |
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s->threshold = threshold16; |
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s->bpc = 2; |
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} |
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return 0; |
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} |
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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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ThresholdContext *s = ctx->priv; |
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AVFilterLink *base = ctx->inputs[0]; |
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AVFilterLink *threshold = ctx->inputs[1]; |
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AVFilterLink *min = ctx->inputs[2]; |
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AVFilterLink *max = ctx->inputs[3]; |
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FFFrameSyncIn *in; |
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int ret; |
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if (base->format != threshold->format || |
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base->format != min->format || |
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base->format != max->format) { |
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av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n"); |
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return AVERROR(EINVAL); |
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} |
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if (base->w != threshold->w || |
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base->h != threshold->h || |
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base->w != min->w || |
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base->h != min->h || |
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base->w != max->w || |
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base->h != max->h) { |
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av_log(ctx, AV_LOG_ERROR, "First input link %s parameters " |
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"(size %dx%d) do not match the corresponding " |
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"second input link %s parameters (%dx%d) " |
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"and/or third input link %s parameters (%dx%d) " |
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"and/or fourth input link %s parameters (%dx%d)\n", |
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ctx->input_pads[0].name, base->w, base->h, |
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ctx->input_pads[1].name, threshold->w, threshold->h, |
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ctx->input_pads[2].name, min->w, min->h, |
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ctx->input_pads[3].name, max->w, max->h); |
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return AVERROR(EINVAL); |
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} |
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outlink->w = base->w; |
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outlink->h = base->h; |
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outlink->time_base = base->time_base; |
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outlink->sample_aspect_ratio = base->sample_aspect_ratio; |
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outlink->frame_rate = base->frame_rate; |
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if ((ret = ff_framesync_init(&s->fs, ctx, 4)) < 0) |
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return ret; |
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in = s->fs.in; |
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in[0].time_base = base->time_base; |
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in[1].time_base = threshold->time_base; |
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in[2].time_base = min->time_base; |
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in[3].time_base = max->time_base; |
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in[0].sync = 1; |
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in[0].before = EXT_STOP; |
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in[0].after = EXT_STOP; |
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in[1].sync = 1; |
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in[1].before = EXT_STOP; |
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in[1].after = EXT_STOP; |
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in[2].sync = 1; |
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in[2].before = EXT_STOP; |
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in[2].after = EXT_STOP; |
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in[3].sync = 1; |
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in[3].before = EXT_STOP; |
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in[3].after = EXT_STOP; |
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s->fs.opaque = s; |
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s->fs.on_event = process_frame; |
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return ff_framesync_configure(&s->fs); |
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} |
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static int filter_frame(AVFilterLink *inlink, AVFrame *buf) |
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{ |
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ThresholdContext *s = inlink->dst->priv; |
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return ff_framesync_filter_frame(&s->fs, inlink, buf); |
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} |
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static int request_frame(AVFilterLink *outlink) |
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{ |
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ThresholdContext *s = outlink->src->priv; |
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return ff_framesync_request_frame(&s->fs, outlink); |
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} |
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static av_cold void uninit(AVFilterContext *ctx) |
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{ |
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ThresholdContext *s = ctx->priv; |
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ff_framesync_uninit(&s->fs); |
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} |
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static const AVFilterPad 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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{ |
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.name = "threshold", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.filter_frame = filter_frame, |
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}, |
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{ |
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.name = "min", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.filter_frame = filter_frame, |
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}, |
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{ |
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.name = "max", |
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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 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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.request_frame = request_frame, |
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}, |
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{ NULL } |
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}; |
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AVFilter ff_vf_threshold = { |
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.name = "threshold", |
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.description = NULL_IF_CONFIG_SMALL("Threshold first video stream using other video streams."), |
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.priv_size = sizeof(ThresholdContext), |
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.priv_class = &threshold_class, |
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.uninit = uninit, |
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.query_formats = query_formats, |
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.inputs = inputs, |
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.outputs = outputs, |
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.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL, |
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}; |
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