| /* |
| * Copyright (c) 2013 Oka Motofumi (chikuzen.mo at gmail dot com) |
| * Copyright (c) 2016 Paul B Mahol |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "libavutil/imgutils.h" |
| #include "libavutil/pixdesc.h" |
| #include "libavutil/opt.h" |
| #include "avfilter.h" |
| #include "formats.h" |
| #include "internal.h" |
| #include "video.h" |
| #include "framesync.h" |
| |
| #define OFFSET(x) offsetof(HysteresisContext, x) |
| #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
| |
| typedef struct HysteresisContext { |
| const AVClass *class; |
| FFFrameSync fs; |
| |
| int planes; |
| int threshold; |
| |
| int width[4], height[4]; |
| int nb_planes; |
| int depth; |
| |
| uint8_t *map; |
| uint32_t *xy; |
| int index; |
| |
| void (*hysteresis)(struct HysteresisContext *s, const uint8_t *bsrc, const uint8_t *osrc, uint8_t *dst, |
| ptrdiff_t blinesize, ptrdiff_t olinesize, |
| ptrdiff_t destlinesize, |
| int w, int h); |
| } HysteresisContext; |
| |
| static const AVOption hysteresis_options[] = { |
| { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS }, |
| { "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_INT, {.i64=0}, 0, UINT16_MAX, FLAGS }, |
| { NULL } |
| }; |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| static const enum AVPixelFormat pix_fmts[] = { |
| AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, |
| AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, |
| AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P, |
| AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, |
| AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, |
| AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, |
| AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, |
| AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12, |
| AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, |
| AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, |
| AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, |
| AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10, |
| AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16, |
| AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, |
| AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16, |
| AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16, |
| AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16, |
| AV_PIX_FMT_NONE |
| }; |
| |
| return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); |
| } |
| |
| static int process_frame(FFFrameSync *fs) |
| { |
| AVFilterContext *ctx = fs->parent; |
| HysteresisContext *s = fs->opaque; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| AVFrame *out, *base, *alt; |
| int ret; |
| |
| if ((ret = ff_framesync_get_frame(&s->fs, 0, &base, 0)) < 0 || |
| (ret = ff_framesync_get_frame(&s->fs, 1, &alt, 0)) < 0) |
| return ret; |
| |
| if (ctx->is_disabled) { |
| out = av_frame_clone(base); |
| if (!out) |
| return AVERROR(ENOMEM); |
| } else { |
| int p; |
| |
| out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!out) |
| return AVERROR(ENOMEM); |
| av_frame_copy_props(out, base); |
| |
| for (p = 0; p < s->nb_planes; p++) { |
| if (!((1 << p) & s->planes)) { |
| av_image_copy_plane(out->data[p], out->linesize[p], base->data[p], base->linesize[p], |
| s->width[p], s->height[p]); |
| continue; |
| } else { |
| int y; |
| |
| for (y = 0; y < s->height[p]; y++) { |
| memset(out->data[p] + y * out->linesize[p], 0, s->width[p]); |
| } |
| } |
| |
| s->index = -1; |
| memset(s->map, 0, s->width[0] * s->height[0]); |
| memset(s->xy, 0, s->width[0] * s->height[0] * 4); |
| |
| s->hysteresis(s, base->data[p], alt->data[p], |
| out->data[p], |
| base->linesize[p], alt->linesize[p], |
| out->linesize[p], |
| s->width[p], s->height[p]); |
| } |
| } |
| out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base); |
| |
| return ff_filter_frame(outlink, out); |
| } |
| |
| static int passed(HysteresisContext *s, int x, int y, int w) |
| { |
| return s->map[x + y * w]; |
| } |
| |
| static void push(HysteresisContext *s, int x, int y, int w) |
| { |
| s->map[x + y * w] = 0xff; |
| s->xy[++s->index] = (uint16_t)(x) << 16 | (uint16_t)y; |
| } |
| |
| static void pop(HysteresisContext *s, int *x, int *y) |
| { |
| uint32_t val = s->xy[s->index--]; |
| |
| *x = val >> 16; |
| *y = val & 0x0000FFFF; |
| } |
| |
| static int is_empty(HysteresisContext *s) |
| { |
| return s->index < 0; |
| } |
| |
| static void hysteresis8(HysteresisContext *s, const uint8_t *bsrc, const uint8_t *asrc, |
| uint8_t *dst, |
| ptrdiff_t blinesize, ptrdiff_t alinesize, |
| ptrdiff_t dlinesize, |
| int w, int h) |
| { |
| const int t = s->threshold; |
| int x, y; |
| |
| for (y = 0; y < h; y++) { |
| for (x = 0; x < w; x++) { |
| if ((bsrc[x + y * blinesize] > t) && (asrc[x + y * alinesize] > t) && !passed(s, x, y, w)) { |
| int posx, posy; |
| |
| dst[x + y * dlinesize] = asrc[x + y * alinesize]; |
| |
| push(s, x, y, w); |
| |
| while (!is_empty(s)) { |
| int x_min, x_max, y_min, y_max, yy, xx; |
| |
| pop(s, &posx, &posy); |
| |
| x_min = posx > 0 ? posx - 1 : 0; |
| x_max = posx < w - 1 ? posx + 1 : posx; |
| y_min = posy > 0 ? posy - 1 : 0; |
| y_max = posy < h - 1 ? posy + 1 : posy; |
| |
| for (yy = y_min; yy <= y_max; yy++) { |
| for (xx = x_min; xx <= x_max; xx++) { |
| if ((asrc[xx + yy * alinesize] > t) && !passed(s, xx, yy, w)) { |
| dst[xx + yy * dlinesize] = asrc[xx + yy * alinesize]; |
| push(s, xx, yy, w); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| static void hysteresis16(HysteresisContext *s, const uint8_t *bbsrc, const uint8_t *aasrc, |
| uint8_t *ddst, |
| ptrdiff_t blinesize, ptrdiff_t alinesize, |
| ptrdiff_t dlinesize, |
| int w, int h) |
| { |
| const uint16_t *bsrc = (const uint16_t *)bbsrc; |
| const uint16_t *asrc = (const uint16_t *)aasrc; |
| uint16_t *dst = (uint16_t *)ddst; |
| const int t = s->threshold; |
| int x, y; |
| |
| blinesize /= 2; |
| alinesize /= 2; |
| dlinesize /= 2; |
| |
| for (y = 0; y < h; y++) { |
| for (x = 0; x < w; x++) { |
| if ((bsrc[x + y * blinesize] > t) && (asrc[x + y * alinesize] > t) && !passed(s, x, y, w)) { |
| int posx, posy; |
| |
| dst[x + y * dlinesize] = asrc[x + y * alinesize]; |
| |
| push(s, x, y, w); |
| |
| while (!is_empty(s)) { |
| int x_min, x_max, y_min, y_max, yy, xx; |
| |
| pop(s, &posx, &posy); |
| |
| x_min = posx > 0 ? posx - 1 : 0; |
| x_max = posx < w - 1 ? posx + 1 : posx; |
| y_min = posy > 0 ? posy - 1 : 0; |
| y_max = posy < h - 1 ? posy + 1 : posy; |
| |
| for (yy = y_min; yy <= y_max; yy++) { |
| for (xx = x_min; xx <= x_max; xx++) { |
| if ((asrc[xx + yy * alinesize] > t) && !passed(s, xx, yy, w)) { |
| dst[xx + yy * dlinesize] = asrc[xx + yy * alinesize]; |
| push(s, xx, yy, w); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| static int config_input(AVFilterLink *inlink) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| HysteresisContext *s = ctx->priv; |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
| int vsub, hsub; |
| |
| s->nb_planes = av_pix_fmt_count_planes(inlink->format); |
| |
| hsub = desc->log2_chroma_w; |
| vsub = desc->log2_chroma_h; |
| s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub); |
| s->height[0] = s->height[3] = inlink->h; |
| s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub); |
| s->width[0] = s->width[3] = inlink->w; |
| |
| s->depth = desc->comp[0].depth; |
| |
| if (desc->comp[0].depth == 8) |
| s->hysteresis = hysteresis8; |
| else |
| s->hysteresis = hysteresis16; |
| |
| s->map = av_calloc(inlink->w, inlink->h * sizeof (*s->map)); |
| if (!s->map) |
| return AVERROR(ENOMEM); |
| |
| s->xy = av_calloc(inlink->w, inlink->h * sizeof(*s->xy)); |
| if (!s->xy) |
| return AVERROR(ENOMEM); |
| |
| return 0; |
| } |
| |
| static int config_output(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| HysteresisContext *s = ctx->priv; |
| AVFilterLink *base = ctx->inputs[0]; |
| AVFilterLink *alt = ctx->inputs[1]; |
| FFFrameSyncIn *in; |
| int ret; |
| |
| if (base->format != alt->format) { |
| av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n"); |
| return AVERROR(EINVAL); |
| } |
| if (base->w != alt->w || base->h != alt->h) { |
| av_log(ctx, AV_LOG_ERROR, "First input link %s parameters " |
| "(size %dx%d) do not match the corresponding " |
| "second input link %s parameters (size %dx%d)\n", |
| ctx->input_pads[0].name, base->w, base->h, |
| ctx->input_pads[1].name, |
| alt->w, alt->h); |
| return AVERROR(EINVAL); |
| } |
| |
| outlink->w = base->w; |
| outlink->h = base->h; |
| outlink->time_base = base->time_base; |
| outlink->sample_aspect_ratio = base->sample_aspect_ratio; |
| outlink->frame_rate = base->frame_rate; |
| |
| if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0) |
| return ret; |
| |
| in = s->fs.in; |
| in[0].time_base = base->time_base; |
| in[1].time_base = alt->time_base; |
| in[0].sync = 1; |
| in[0].before = EXT_STOP; |
| in[0].after = EXT_INFINITY; |
| in[1].sync = 1; |
| in[1].before = EXT_STOP; |
| in[1].after = EXT_INFINITY; |
| s->fs.opaque = s; |
| s->fs.on_event = process_frame; |
| |
| return ff_framesync_configure(&s->fs); |
| } |
| |
| static int activate(AVFilterContext *ctx) |
| { |
| HysteresisContext *s = ctx->priv; |
| return ff_framesync_activate(&s->fs); |
| } |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| HysteresisContext *s = ctx->priv; |
| |
| ff_framesync_uninit(&s->fs); |
| av_freep(&s->map); |
| av_freep(&s->xy); |
| } |
| |
| FRAMESYNC_DEFINE_CLASS(hysteresis, HysteresisContext, fs); |
| |
| static const AVFilterPad hysteresis_inputs[] = { |
| { |
| .name = "base", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_input, |
| }, |
| { |
| .name = "alt", |
| .type = AVMEDIA_TYPE_VIDEO, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad hysteresis_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_output, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_vf_hysteresis = { |
| .name = "hysteresis", |
| .description = NULL_IF_CONFIG_SMALL("Grow first stream into second stream by connecting components."), |
| .preinit = hysteresis_framesync_preinit, |
| .priv_size = sizeof(HysteresisContext), |
| .uninit = uninit, |
| .query_formats = query_formats, |
| .activate = activate, |
| .inputs = hysteresis_inputs, |
| .outputs = hysteresis_outputs, |
| .priv_class = &hysteresis_class, |
| .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL, |
| }; |
