diff options
Diffstat (limited to 'libavfilter/vf_signalstats.c')
-rw-r--r-- | libavfilter/vf_signalstats.c | 1024 |
1 files changed, 1024 insertions, 0 deletions
diff --git a/libavfilter/vf_signalstats.c b/libavfilter/vf_signalstats.c new file mode 100644 index 0000000000..22a1db196f --- /dev/null +++ b/libavfilter/vf_signalstats.c @@ -0,0 +1,1024 @@ +/* + * Copyright (c) 2010 Mark Heath mjpeg0 @ silicontrip dot org + * Copyright (c) 2014 Clément Bœsch + * Copyright (c) 2014 Dave Rice @dericed + * + * 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/intreadwrite.h" +#include "libavutil/opt.h" +#include "libavutil/pixdesc.h" +#include "internal.h" + +enum FilterMode { + FILTER_NONE = -1, + FILTER_TOUT, + FILTER_VREP, + FILTER_BRNG, + FILT_NUMB +}; + +typedef struct { + const AVClass *class; + int chromah; // height of chroma plane + int chromaw; // width of chroma plane + int hsub; // horizontal subsampling + int vsub; // vertical subsampling + int depth; // pixel depth + int fs; // pixel count per frame + int cfs; // pixel count per frame of chroma planes + int outfilter; // FilterMode + int filters; + AVFrame *frame_prev; + uint8_t rgba_color[4]; + int yuv_color[3]; + int nb_jobs; + int *jobs_rets; + + int *histy, *histu, *histv, *histsat; + + AVFrame *frame_sat; + AVFrame *frame_hue; +} SignalstatsContext; + +typedef struct ThreadData { + const AVFrame *in; + AVFrame *out; +} ThreadData; + +typedef struct ThreadDataHueSatMetrics { + const AVFrame *src; + AVFrame *dst_sat, *dst_hue; +} ThreadDataHueSatMetrics; + +#define OFFSET(x) offsetof(SignalstatsContext, x) +#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM + +static const AVOption signalstats_options[] = { + {"stat", "set statistics filters", OFFSET(filters), AV_OPT_TYPE_FLAGS, {.i64=0}, 0, INT_MAX, FLAGS, "filters"}, + {"tout", "analyze pixels for temporal outliers", 0, AV_OPT_TYPE_CONST, {.i64=1<<FILTER_TOUT}, 0, 0, FLAGS, "filters"}, + {"vrep", "analyze video lines for vertical line repetition", 0, AV_OPT_TYPE_CONST, {.i64=1<<FILTER_VREP}, 0, 0, FLAGS, "filters"}, + {"brng", "analyze for pixels outside of broadcast range", 0, AV_OPT_TYPE_CONST, {.i64=1<<FILTER_BRNG}, 0, 0, FLAGS, "filters"}, + {"out", "set video filter", OFFSET(outfilter), AV_OPT_TYPE_INT, {.i64=FILTER_NONE}, -1, FILT_NUMB-1, FLAGS, "out"}, + {"tout", "highlight pixels that depict temporal outliers", 0, AV_OPT_TYPE_CONST, {.i64=FILTER_TOUT}, 0, 0, FLAGS, "out"}, + {"vrep", "highlight video lines that depict vertical line repetition", 0, AV_OPT_TYPE_CONST, {.i64=FILTER_VREP}, 0, 0, FLAGS, "out"}, + {"brng", "highlight pixels that are outside of broadcast range", 0, AV_OPT_TYPE_CONST, {.i64=FILTER_BRNG}, 0, 0, FLAGS, "out"}, + {"c", "set highlight color", OFFSET(rgba_color), AV_OPT_TYPE_COLOR, {.str="yellow"}, .flags=FLAGS}, + {"color", "set highlight color", OFFSET(rgba_color), AV_OPT_TYPE_COLOR, {.str="yellow"}, .flags=FLAGS}, + {NULL} +}; + +AVFILTER_DEFINE_CLASS(signalstats); + +static av_cold int init(AVFilterContext *ctx) +{ + uint8_t r, g, b; + SignalstatsContext *s = ctx->priv; + + if (s->outfilter != FILTER_NONE) + s->filters |= 1 << s->outfilter; + + r = s->rgba_color[0]; + g = s->rgba_color[1]; + b = s->rgba_color[2]; + s->yuv_color[0] = (( 66*r + 129*g + 25*b + (1<<7)) >> 8) + 16; + s->yuv_color[1] = ((-38*r + -74*g + 112*b + (1<<7)) >> 8) + 128; + s->yuv_color[2] = ((112*r + -94*g + -18*b + (1<<7)) >> 8) + 128; + return 0; +} + +static av_cold void uninit(AVFilterContext *ctx) +{ + SignalstatsContext *s = ctx->priv; + av_frame_free(&s->frame_prev); + av_frame_free(&s->frame_sat); + av_frame_free(&s->frame_hue); + av_freep(&s->jobs_rets); + av_freep(&s->histy); + av_freep(&s->histu); + av_freep(&s->histv); + av_freep(&s->histsat); +} + +static int query_formats(AVFilterContext *ctx) +{ + // TODO: add more + static const enum AVPixelFormat pix_fmts[] = { + AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, + AV_PIX_FMT_YUV440P, + AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P, + AV_PIX_FMT_YUVJ440P, + AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV420P9, + AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV420P10, + AV_PIX_FMT_YUV440P10, + AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12, + AV_PIX_FMT_YUV440P12, + AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14, + AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV420P16, + AV_PIX_FMT_NONE + }; + + AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts); + if (!fmts_list) + return AVERROR(ENOMEM); + return ff_set_common_formats(ctx, fmts_list); +} + +static AVFrame *alloc_frame(enum AVPixelFormat pixfmt, int w, int h) +{ + AVFrame *frame = av_frame_alloc(); + if (!frame) + return NULL; + + frame->format = pixfmt; + frame->width = w; + frame->height = h; + + if (av_frame_get_buffer(frame, 32) < 0) { + av_frame_free(&frame); + return NULL; + } + + return frame; +} + +static int config_props(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + SignalstatsContext *s = ctx->priv; + AVFilterLink *inlink = outlink->src->inputs[0]; + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(outlink->format); + s->hsub = desc->log2_chroma_w; + s->vsub = desc->log2_chroma_h; + s->depth = desc->comp[0].depth; + if (s->depth > 8) { + s->histy = av_malloc_array(1 << s->depth, sizeof(*s->histy)); + s->histu = av_malloc_array(1 << s->depth, sizeof(*s->histu)); + s->histv = av_malloc_array(1 << s->depth, sizeof(*s->histv)); + s->histsat = av_malloc_array(1 << s->depth, sizeof(*s->histsat)); + + if (!s->histy || !s->histu || !s->histv || !s->histsat) + return AVERROR(ENOMEM); + } + + outlink->w = inlink->w; + outlink->h = inlink->h; + + s->chromaw = AV_CEIL_RSHIFT(inlink->w, s->hsub); + s->chromah = AV_CEIL_RSHIFT(inlink->h, s->vsub); + + s->fs = inlink->w * inlink->h; + s->cfs = s->chromaw * s->chromah; + + s->nb_jobs = FFMAX(1, FFMIN(inlink->h, ff_filter_get_nb_threads(ctx))); + s->jobs_rets = av_malloc_array(s->nb_jobs, sizeof(*s->jobs_rets)); + if (!s->jobs_rets) + return AVERROR(ENOMEM); + + s->frame_sat = alloc_frame(s->depth > 8 ? AV_PIX_FMT_GRAY16 : AV_PIX_FMT_GRAY8, inlink->w, inlink->h); + s->frame_hue = alloc_frame(AV_PIX_FMT_GRAY16, inlink->w, inlink->h); + if (!s->frame_sat || !s->frame_hue) + return AVERROR(ENOMEM); + + return 0; +} + +static void burn_frame8(const SignalstatsContext *s, AVFrame *f, int x, int y) +{ + const int chromax = x >> s->hsub; + const int chromay = y >> s->vsub; + f->data[0][y * f->linesize[0] + x] = s->yuv_color[0]; + f->data[1][chromay * f->linesize[1] + chromax] = s->yuv_color[1]; + f->data[2][chromay * f->linesize[2] + chromax] = s->yuv_color[2]; +} + +static void burn_frame16(const SignalstatsContext *s, AVFrame *f, int x, int y) +{ + const int chromax = x >> s->hsub; + const int chromay = y >> s->vsub; + const int mult = 1 << (s->depth - 8); + AV_WN16(f->data[0] + y * f->linesize[0] + x * 2, s->yuv_color[0] * mult); + AV_WN16(f->data[1] + chromay * f->linesize[1] + chromax * 2, s->yuv_color[1] * mult); + AV_WN16(f->data[2] + chromay * f->linesize[2] + chromax * 2, s->yuv_color[2] * mult); +} + +static int filter8_brng(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + ThreadData *td = arg; + const SignalstatsContext *s = ctx->priv; + const AVFrame *in = td->in; + AVFrame *out = td->out; + const int w = in->width; + const int h = in->height; + const int slice_start = (h * jobnr ) / nb_jobs; + const int slice_end = (h * (jobnr+1)) / nb_jobs; + int x, y, score = 0; + + for (y = slice_start; y < slice_end; y++) { + const int yc = y >> s->vsub; + const uint8_t *pluma = &in->data[0][y * in->linesize[0]]; + const uint8_t *pchromau = &in->data[1][yc * in->linesize[1]]; + const uint8_t *pchromav = &in->data[2][yc * in->linesize[2]]; + + for (x = 0; x < w; x++) { + const int xc = x >> s->hsub; + const int luma = pluma[x]; + const int chromau = pchromau[xc]; + const int chromav = pchromav[xc]; + const int filt = luma < 16 || luma > 235 || + chromau < 16 || chromau > 240 || + chromav < 16 || chromav > 240; + score += filt; + if (out && filt) + burn_frame8(s, out, x, y); + } + } + return score; +} + +static int filter16_brng(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + ThreadData *td = arg; + const SignalstatsContext *s = ctx->priv; + const AVFrame *in = td->in; + AVFrame *out = td->out; + const int mult = 1 << (s->depth - 8); + const int w = in->width; + const int h = in->height; + const int slice_start = (h * jobnr ) / nb_jobs; + const int slice_end = (h * (jobnr+1)) / nb_jobs; + int x, y, score = 0; + + for (y = slice_start; y < slice_end; y++) { + const int yc = y >> s->vsub; + const uint16_t *pluma = (uint16_t *)&in->data[0][y * in->linesize[0]]; + const uint16_t *pchromau = (uint16_t *)&in->data[1][yc * in->linesize[1]]; + const uint16_t *pchromav = (uint16_t *)&in->data[2][yc * in->linesize[2]]; + + for (x = 0; x < w; x++) { + const int xc = x >> s->hsub; + const int luma = pluma[x]; + const int chromau = pchromau[xc]; + const int chromav = pchromav[xc]; + const int filt = luma < 16 * mult || luma > 235 * mult || + chromau < 16 * mult || chromau > 240 * mult || + chromav < 16 * mult || chromav > 240 * mult; + score += filt; + if (out && filt) + burn_frame16(s, out, x, y); + } + } + return score; +} + +static int filter_tout_outlier(uint8_t x, uint8_t y, uint8_t z) +{ + return ((abs(x - y) + abs (z - y)) / 2) - abs(z - x) > 4; // make 4 configurable? +} + +static int filter8_tout(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + ThreadData *td = arg; + const SignalstatsContext *s = ctx->priv; + const AVFrame *in = td->in; + AVFrame *out = td->out; + const int w = in->width; + const int h = in->height; + const int slice_start = (h * jobnr ) / nb_jobs; + const int slice_end = (h * (jobnr+1)) / nb_jobs; + const uint8_t *p = in->data[0]; + int lw = in->linesize[0]; + int x, y, score = 0, filt; + + for (y = slice_start; y < slice_end; y++) { + + if (y - 1 < 0 || y + 1 >= h) + continue; + + // detect two pixels above and below (to eliminate interlace artefacts) + // should check that video format is infact interlaced. + +#define FILTER(i, j) \ + filter_tout_outlier(p[(y-j) * lw + x + i], \ + p[ y * lw + x + i], \ + p[(y+j) * lw + x + i]) + +#define FILTER3(j) (FILTER(-1, j) && FILTER(0, j) && FILTER(1, j)) + + if (y - 2 >= 0 && y + 2 < h) { + for (x = 1; x < w - 1; x++) { + filt = FILTER3(2) && FILTER3(1); + score += filt; + if (filt && out) + burn_frame8(s, out, x, y); + } + } else { + for (x = 1; x < w - 1; x++) { + filt = FILTER3(1); + score += filt; + if (filt && out) + burn_frame8(s, out, x, y); + } + } + } + return score; +} + +static int filter16_tout(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + ThreadData *td = arg; + const SignalstatsContext *s = ctx->priv; + const AVFrame *in = td->in; + AVFrame *out = td->out; + const int w = in->width; + const int h = in->height; + const int slice_start = (h * jobnr ) / nb_jobs; + const int slice_end = (h * (jobnr+1)) / nb_jobs; + const uint16_t *p = (uint16_t *)in->data[0]; + int lw = in->linesize[0] / 2; + int x, y, score = 0, filt; + + for (y = slice_start; y < slice_end; y++) { + + if (y - 1 < 0 || y + 1 >= h) + continue; + + // detect two pixels above and below (to eliminate interlace artefacts) + // should check that video format is infact interlaced. + + if (y - 2 >= 0 && y + 2 < h) { + for (x = 1; x < w - 1; x++) { + filt = FILTER3(2) && FILTER3(1); + score += filt; + if (filt && out) + burn_frame16(s, out, x, y); + } + } else { + for (x = 1; x < w - 1; x++) { + filt = FILTER3(1); + score += filt; + if (filt && out) + burn_frame16(s, out, x, y); + } + } + } + return score; +} + +#define VREP_START 4 + +static int filter8_vrep(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + ThreadData *td = arg; + const SignalstatsContext *s = ctx->priv; + const AVFrame *in = td->in; + AVFrame *out = td->out; + const int w = in->width; + const int h = in->height; + const int slice_start = (h * jobnr ) / nb_jobs; + const int slice_end = (h * (jobnr+1)) / nb_jobs; + const uint8_t *p = in->data[0]; + const int lw = in->linesize[0]; + int x, y, score = 0; + + for (y = slice_start; y < slice_end; y++) { + const int y2lw = (y - VREP_START) * lw; + const int ylw = y * lw; + int filt, totdiff = 0; + + if (y < VREP_START) + continue; + + for (x = 0; x < w; x++) + totdiff += abs(p[y2lw + x] - p[ylw + x]); + filt = totdiff < w; + + score += filt; + if (filt && out) + for (x = 0; x < w; x++) + burn_frame8(s, out, x, y); + } + return score * w; +} + +static int filter16_vrep(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + ThreadData *td = arg; + const SignalstatsContext *s = ctx->priv; + const AVFrame *in = td->in; + AVFrame *out = td->out; + const int w = in->width; + const int h = in->height; + const int slice_start = (h * jobnr ) / nb_jobs; + const int slice_end = (h * (jobnr+1)) / nb_jobs; + const uint16_t *p = (uint16_t *)in->data[0]; + const int lw = in->linesize[0] / 2; + int x, y, score = 0; + + for (y = slice_start; y < slice_end; y++) { + const int y2lw = (y - VREP_START) * lw; + const int ylw = y * lw; + int64_t totdiff = 0; + int filt; + + if (y < VREP_START) + continue; + + for (x = 0; x < w; x++) + totdiff += abs(p[y2lw + x] - p[ylw + x]); + filt = totdiff < w; + + score += filt; + if (filt && out) + for (x = 0; x < w; x++) + burn_frame16(s, out, x, y); + } + return score * w; +} + +static const struct { + const char *name; + int (*process8)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs); + int (*process16)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs); +} filters_def[] = { + {"TOUT", filter8_tout, filter16_tout}, + {"VREP", filter8_vrep, filter16_vrep}, + {"BRNG", filter8_brng, filter16_brng}, + {NULL} +}; + +#define DEPTH 256 + +static int compute_sat_hue_metrics8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + int i, j; + ThreadDataHueSatMetrics *td = arg; + const SignalstatsContext *s = ctx->priv; + const AVFrame *src = td->src; + AVFrame *dst_sat = td->dst_sat; + AVFrame *dst_hue = td->dst_hue; + + const int slice_start = (s->chromah * jobnr ) / nb_jobs; + const int slice_end = (s->chromah * (jobnr+1)) / nb_jobs; + + const int lsz_u = src->linesize[1]; + const int lsz_v = src->linesize[2]; + const uint8_t *p_u = src->data[1] + slice_start * lsz_u; + const uint8_t *p_v = src->data[2] + slice_start * lsz_v; + + const int lsz_sat = dst_sat->linesize[0]; + const int lsz_hue = dst_hue->linesize[0]; + uint8_t *p_sat = dst_sat->data[0] + slice_start * lsz_sat; + uint8_t *p_hue = dst_hue->data[0] + slice_start * lsz_hue; + + for (j = slice_start; j < slice_end; j++) { + for (i = 0; i < s->chromaw; i++) { + const int yuvu = p_u[i]; + const int yuvv = p_v[i]; + p_sat[i] = hypot(yuvu - 128, yuvv - 128); // int or round? + ((int16_t*)p_hue)[i] = floor((180 / M_PI) * atan2f(yuvu-128, yuvv-128) + 180); + } + p_u += lsz_u; + p_v += lsz_v; + p_sat += lsz_sat; + p_hue += lsz_hue; + } + + return 0; +} + +static int compute_sat_hue_metrics16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + int i, j; + ThreadDataHueSatMetrics *td = arg; + const SignalstatsContext *s = ctx->priv; + const AVFrame *src = td->src; + AVFrame *dst_sat = td->dst_sat; + AVFrame *dst_hue = td->dst_hue; + const int mid = 1 << (s->depth - 1); + + const int slice_start = (s->chromah * jobnr ) / nb_jobs; + const int slice_end = (s->chromah * (jobnr+1)) / nb_jobs; + + const int lsz_u = src->linesize[1] / 2; + const int lsz_v = src->linesize[2] / 2; + const uint16_t *p_u = (uint16_t*)src->data[1] + slice_start * lsz_u; + const uint16_t *p_v = (uint16_t*)src->data[2] + slice_start * lsz_v; + + const int lsz_sat = dst_sat->linesize[0] / 2; + const int lsz_hue = dst_hue->linesize[0] / 2; + uint16_t *p_sat = (uint16_t*)dst_sat->data[0] + slice_start * lsz_sat; + uint16_t *p_hue = (uint16_t*)dst_hue->data[0] + slice_start * lsz_hue; + + for (j = slice_start; j < slice_end; j++) { + for (i = 0; i < s->chromaw; i++) { + const int yuvu = p_u[i]; + const int yuvv = p_v[i]; + p_sat[i] = hypot(yuvu - mid, yuvv - mid); // int or round? + ((int16_t*)p_hue)[i] = floor((180 / M_PI) * atan2f(yuvu-mid, yuvv-mid) + 180); + } + p_u += lsz_u; + p_v += lsz_v; + p_sat += lsz_sat; + p_hue += lsz_hue; + } + + return 0; +} + +static unsigned compute_bit_depth(uint16_t mask) +{ + return av_popcount(mask); +} + +static int filter_frame8(AVFilterLink *link, AVFrame *in) +{ + AVFilterContext *ctx = link->dst; + SignalstatsContext *s = ctx->priv; + AVFilterLink *outlink = ctx->outputs[0]; + AVFrame *out = in; + int i, j; + int w = 0, cw = 0, // in + pw = 0, cpw = 0; // prev + int fil; + char metabuf[128]; + unsigned int histy[DEPTH] = {0}, + histu[DEPTH] = {0}, + histv[DEPTH] = {0}, + histhue[360] = {0}, + histsat[DEPTH] = {0}; // limited to 8 bit data. + int miny = -1, minu = -1, minv = -1; + int maxy = -1, maxu = -1, maxv = -1; + int lowy = -1, lowu = -1, lowv = -1; + int highy = -1, highu = -1, highv = -1; + int minsat = -1, maxsat = -1, lowsat = -1, highsat = -1; + int lowp, highp, clowp, chighp; + int accy, accu, accv; + int accsat, acchue = 0; + int medhue, maxhue; + int toty = 0, totu = 0, totv = 0, totsat=0; + int tothue = 0; + int dify = 0, difu = 0, difv = 0; + uint16_t masky = 0, masku = 0, maskv = 0; + + int filtot[FILT_NUMB] = {0}; + AVFrame *prev; + + AVFrame *sat = s->frame_sat; + AVFrame *hue = s->frame_hue; + const uint8_t *p_sat = sat->data[0]; + const uint8_t *p_hue = hue->data[0]; + const int lsz_sat = sat->linesize[0]; + const int lsz_hue = hue->linesize[0]; + ThreadDataHueSatMetrics td_huesat = { + .src = in, + .dst_sat = sat, + .dst_hue = hue, + }; + + if (!s->frame_prev) + s->frame_prev = av_frame_clone(in); + + prev = s->frame_prev; + + if (s->outfilter != FILTER_NONE) { + out = av_frame_clone(in); + av_frame_make_writable(out); + } + + ctx->internal->execute(ctx, compute_sat_hue_metrics8, &td_huesat, + NULL, FFMIN(s->chromah, ff_filter_get_nb_threads(ctx))); + + // Calculate luma histogram and difference with previous frame or field. + for (j = 0; j < link->h; j++) { + for (i = 0; i < link->w; i++) { + const int yuv = in->data[0][w + i]; + + masky |= yuv; + histy[yuv]++; + dify += abs(yuv - prev->data[0][pw + i]); + } + w += in->linesize[0]; + pw += prev->linesize[0]; + } + + // Calculate chroma histogram and difference with previous frame or field. + for (j = 0; j < s->chromah; j++) { + for (i = 0; i < s->chromaw; i++) { + const int yuvu = in->data[1][cw+i]; + const int yuvv = in->data[2][cw+i]; + + masku |= yuvu; + maskv |= yuvv; + histu[yuvu]++; + difu += abs(yuvu - prev->data[1][cpw+i]); + histv[yuvv]++; + difv += abs(yuvv - prev->data[2][cpw+i]); + + histsat[p_sat[i]]++; + histhue[((int16_t*)p_hue)[i]]++; + } + cw += in->linesize[1]; + cpw += prev->linesize[1]; + p_sat += lsz_sat; + p_hue += lsz_hue; + } + + for (fil = 0; fil < FILT_NUMB; fil ++) { + if (s->filters & 1<<fil) { + ThreadData td = { + .in = in, + .out = out != in && s->outfilter == fil ? out : NULL, + }; + memset(s->jobs_rets, 0, s->nb_jobs * sizeof(*s->jobs_rets)); + ctx->internal->execute(ctx, filters_def[fil].process8, + &td, s->jobs_rets, s->nb_jobs); + for (i = 0; i < s->nb_jobs; i++) + filtot[fil] += s->jobs_rets[i]; + } + } + + // find low / high based on histogram percentile + // these only need to be calculated once. + + lowp = lrint(s->fs * 10 / 100.); + highp = lrint(s->fs * 90 / 100.); + clowp = lrint(s->cfs * 10 / 100.); + chighp = lrint(s->cfs * 90 / 100.); + + accy = accu = accv = accsat = 0; + for (fil = 0; fil < DEPTH; fil++) { + if (miny < 0 && histy[fil]) miny = fil; + if (minu < 0 && histu[fil]) minu = fil; + if (minv < 0 && histv[fil]) minv = fil; + if (minsat < 0 && histsat[fil]) minsat = fil; + + if (histy[fil]) maxy = fil; + if (histu[fil]) maxu = fil; + if (histv[fil]) maxv = fil; + if (histsat[fil]) maxsat = fil; + + toty += histy[fil] * fil; + totu += histu[fil] * fil; + totv += histv[fil] * fil; + totsat += histsat[fil] * fil; + + accy += histy[fil]; + accu += histu[fil]; + accv += histv[fil]; + accsat += histsat[fil]; + + if (lowy == -1 && accy >= lowp) lowy = fil; + if (lowu == -1 && accu >= clowp) lowu = fil; + if (lowv == -1 && accv >= clowp) lowv = fil; + if (lowsat == -1 && accsat >= clowp) lowsat = fil; + + if (highy == -1 && accy >= highp) highy = fil; + if (highu == -1 && accu >= chighp) highu = fil; + if (highv == -1 && accv >= chighp) highv = fil; + if (highsat == -1 && accsat >= chighp) highsat = fil; + } + + maxhue = histhue[0]; + medhue = -1; + for (fil = 0; fil < 360; fil++) { + tothue += histhue[fil] * fil; + acchue += histhue[fil]; + + if (medhue == -1 && acchue > s->cfs / 2) + medhue = fil; + if (histhue[fil] > maxhue) { + maxhue = histhue[fil]; + } + } + + av_frame_free(&s->frame_prev); + s->frame_prev = av_frame_clone(in); + +#define SET_META(key, fmt, val) do { \ + snprintf(metabuf, sizeof(metabuf), fmt, val); \ + av_dict_set(&out->metadata, "lavfi.signalstats." key, metabuf, 0); \ +} while (0) + + SET_META("YMIN", "%d", miny); + SET_META("YLOW", "%d", lowy); + SET_META("YAVG", "%g", 1.0 * toty / s->fs); + SET_META("YHIGH", "%d", highy); + SET_META("YMAX", "%d", maxy); + + SET_META("UMIN", "%d", minu); + SET_META("ULOW", "%d", lowu); + SET_META("UAVG", "%g", 1.0 * totu / s->cfs); + SET_META("UHIGH", "%d", highu); + SET_META("UMAX", "%d", maxu); + + SET_META("VMIN", "%d", minv); + SET_META("VLOW", "%d", lowv); + SET_META("VAVG", "%g", 1.0 * totv / s->cfs); + SET_META("VHIGH", "%d", highv); + SET_META("VMAX", "%d", maxv); + + SET_META("SATMIN", "%d", minsat); + SET_META("SATLOW", "%d", lowsat); + SET_META("SATAVG", "%g", 1.0 * totsat / s->cfs); + SET_META("SATHIGH", "%d", highsat); + SET_META("SATMAX", "%d", maxsat); + + SET_META("HUEMED", "%d", medhue); + SET_META("HUEAVG", "%g", 1.0 * tothue / s->cfs); + + SET_META("YDIF", "%g", 1.0 * dify / s->fs); + SET_META("UDIF", "%g", 1.0 * difu / s->cfs); + SET_META("VDIF", "%g", 1.0 * difv / s->cfs); + + SET_META("YBITDEPTH", "%d", compute_bit_depth(masky)); + SET_META("UBITDEPTH", "%d", compute_bit_depth(masku)); + SET_META("VBITDEPTH", "%d", compute_bit_depth(maskv)); + + for (fil = 0; fil < FILT_NUMB; fil ++) { + if (s->filters & 1<<fil) { + char metaname[128]; + snprintf(metabuf, sizeof(metabuf), "%g", 1.0 * filtot[fil] / s->fs); + snprintf(metaname, sizeof(metaname), "lavfi.signalstats.%s", filters_def[fil].name); + av_dict_set(&out->metadata, metaname, metabuf, 0); + } + } + + if (in != out) + av_frame_free(&in); + return ff_filter_frame(outlink, out); +} + +static int filter_frame16(AVFilterLink *link, AVFrame *in) +{ + AVFilterContext *ctx = link->dst; + SignalstatsContext *s = ctx->priv; + AVFilterLink *outlink = ctx->outputs[0]; + AVFrame *out = in; + int i, j; + int w = 0, cw = 0, // in + pw = 0, cpw = 0; // prev + int fil; + char metabuf[128]; + unsigned int *histy = s->histy, + *histu = s->histu, + *histv = s->histv, + histhue[360] = {0}, + *histsat = s->histsat; + int miny = -1, minu = -1, minv = -1; + int maxy = -1, maxu = -1, maxv = -1; + int lowy = -1, lowu = -1, lowv = -1; + int highy = -1, highu = -1, highv = -1; + int minsat = -1, maxsat = -1, lowsat = -1, highsat = -1; + int lowp, highp, clowp, chighp; + int accy, accu, accv; + int accsat, acchue = 0; + int medhue, maxhue; + int64_t toty = 0, totu = 0, totv = 0, totsat=0; + int64_t tothue = 0; + int64_t dify = 0, difu = 0, difv = 0; + uint16_t masky = 0, masku = 0, maskv = 0; + + int filtot[FILT_NUMB] = {0}; + AVFrame *prev; + + AVFrame *sat = s->frame_sat; + AVFrame *hue = s->frame_hue; + const uint16_t *p_sat = (uint16_t *)sat->data[0]; + const uint16_t *p_hue = (uint16_t *)hue->data[0]; + const int lsz_sat = sat->linesize[0] / 2; + const int lsz_hue = hue->linesize[0] / 2; + ThreadDataHueSatMetrics td_huesat = { + .src = in, + .dst_sat = sat, + .dst_hue = hue, + }; + + if (!s->frame_prev) + s->frame_prev = av_frame_clone(in); + + prev = s->frame_prev; + + if (s->outfilter != FILTER_NONE) { + out = av_frame_clone(in); + av_frame_make_writable(out); + } + + ctx->internal->execute(ctx, compute_sat_hue_metrics16, &td_huesat, + NULL, FFMIN(s->chromah, ff_filter_get_nb_threads(ctx))); + + // Calculate luma histogram and difference with previous frame or field. + memset(s->histy, 0, (1 << s->depth) * sizeof(*s->histy)); + for (j = 0; j < link->h; j++) { + for (i = 0; i < link->w; i++) { + const int yuv = AV_RN16(in->data[0] + w + i * 2); + + masky |= yuv; + histy[yuv]++; + dify += abs(yuv - AV_RN16(prev->data[0] + pw + i * 2)); + } + w += in->linesize[0]; + pw += prev->linesize[0]; + } + + // Calculate chroma histogram and difference with previous frame or field. + memset(s->histu, 0, (1 << s->depth) * sizeof(*s->histu)); + memset(s->histv, 0, (1 << s->depth) * sizeof(*s->histv)); + memset(s->histsat, 0, (1 << s->depth) * sizeof(*s->histsat)); + for (j = 0; j < s->chromah; j++) { + for (i = 0; i < s->chromaw; i++) { + const int yuvu = AV_RN16(in->data[1] + cw + i * 2); + const int yuvv = AV_RN16(in->data[2] + cw + i * 2); + + masku |= yuvu; + maskv |= yuvv; + histu[yuvu]++; + difu += abs(yuvu - AV_RN16(prev->data[1] + cpw + i * 2)); + histv[yuvv]++; + difv += abs(yuvv - AV_RN16(prev->data[2] + cpw + i * 2)); + + histsat[p_sat[i]]++; + histhue[((int16_t*)p_hue)[i]]++; + } + cw += in->linesize[1]; + cpw += prev->linesize[1]; + p_sat += lsz_sat; + p_hue += lsz_hue; + } + + for (fil = 0; fil < FILT_NUMB; fil ++) { + if (s->filters & 1<<fil) { + ThreadData td = { + .in = in, + .out = out != in && s->outfilter == fil ? out : NULL, + }; + memset(s->jobs_rets, 0, s->nb_jobs * sizeof(*s->jobs_rets)); + ctx->internal->execute(ctx, filters_def[fil].process16, + &td, s->jobs_rets, s->nb_jobs); + for (i = 0; i < s->nb_jobs; i++) + filtot[fil] += s->jobs_rets[i]; + } + } + + // find low / high based on histogram percentile + // these only need to be calculated once. + + lowp = lrint(s->fs * 10 / 100.); + highp = lrint(s->fs * 90 / 100.); + clowp = lrint(s->cfs * 10 / 100.); + chighp = lrint(s->cfs * 90 / 100.); + + accy = accu = accv = accsat = 0; + for (fil = 0; fil < 1 << s->depth; fil++) { + if (miny < 0 && histy[fil]) miny = fil; + if (minu < 0 && histu[fil]) minu = fil; + if (minv < 0 && histv[fil]) minv = fil; + if (minsat < 0 && histsat[fil]) minsat = fil; + + if (histy[fil]) maxy = fil; + if (histu[fil]) maxu = fil; + if (histv[fil]) maxv = fil; + if (histsat[fil]) maxsat = fil; + + toty += histy[fil] * fil; + totu += histu[fil] * fil; + totv += histv[fil] * fil; + totsat += histsat[fil] * fil; + + accy += histy[fil]; + accu += histu[fil]; + accv += histv[fil]; + accsat += histsat[fil]; + + if (lowy == -1 && accy >= lowp) lowy = fil; + if (lowu == -1 && accu >= clowp) lowu = fil; + if (lowv == -1 && accv >= clowp) lowv = fil; + if (lowsat == -1 && accsat >= clowp) lowsat = fil; + + if (highy == -1 && accy >= highp) highy = fil; + if (highu == -1 && accu >= chighp) highu = fil; + if (highv == -1 && accv >= chighp) highv = fil; + if (highsat == -1 && accsat >= chighp) highsat = fil; + } + + maxhue = histhue[0]; + medhue = -1; + for (fil = 0; fil < 360; fil++) { + tothue += histhue[fil] * fil; + acchue += histhue[fil]; + + if (medhue == -1 && acchue > s->cfs / 2) + medhue = fil; + if (histhue[fil] > maxhue) { + maxhue = histhue[fil]; + } + } + + av_frame_free(&s->frame_prev); + s->frame_prev = av_frame_clone(in); + + SET_META("YMIN", "%d", miny); + SET_META("YLOW", "%d", lowy); + SET_META("YAVG", "%g", 1.0 * toty / s->fs); + SET_META("YHIGH", "%d", highy); + SET_META("YMAX", "%d", maxy); + + SET_META("UMIN", "%d", minu); + SET_META("ULOW", "%d", lowu); + SET_META("UAVG", "%g", 1.0 * totu / s->cfs); + SET_META("UHIGH", "%d", highu); + SET_META("UMAX", "%d", maxu); + + SET_META("VMIN", "%d", minv); + SET_META("VLOW", "%d", lowv); + SET_META("VAVG", "%g", 1.0 * totv / s->cfs); + SET_META("VHIGH", "%d", highv); + SET_META("VMAX", "%d", maxv); + + SET_META("SATMIN", "%d", minsat); + SET_META("SATLOW", "%d", lowsat); + SET_META("SATAVG", "%g", 1.0 * totsat / s->cfs); + SET_META("SATHIGH", "%d", highsat); + SET_META("SATMAX", "%d", maxsat); + + SET_META("HUEMED", "%d", medhue); + SET_META("HUEAVG", "%g", 1.0 * tothue / s->cfs); + + SET_META("YDIF", "%g", 1.0 * dify / s->fs); + SET_META("UDIF", "%g", 1.0 * difu / s->cfs); + SET_META("VDIF", "%g", 1.0 * difv / s->cfs); + + SET_META("YBITDEPTH", "%d", compute_bit_depth(masky)); + SET_META("UBITDEPTH", "%d", compute_bit_depth(masku)); + SET_META("VBITDEPTH", "%d", compute_bit_depth(maskv)); + + for (fil = 0; fil < FILT_NUMB; fil ++) { + if (s->filters & 1<<fil) { + char metaname[128]; + snprintf(metabuf, sizeof(metabuf), "%g", 1.0 * filtot[fil] / s->fs); + snprintf(metaname, sizeof(metaname), "lavfi.signalstats.%s", filters_def[fil].name); + av_dict_set(&out->metadata, metaname, metabuf, 0); + } + } + + if (in != out) + av_frame_free(&in); + return ff_filter_frame(outlink, out); +} + +static int filter_frame(AVFilterLink *link, AVFrame *in) +{ + AVFilterContext *ctx = link->dst; + SignalstatsContext *s = ctx->priv; + + if (s->depth > 8) + return filter_frame16(link, in); + else + return filter_frame8(link, in); +} + +static const AVFilterPad signalstats_inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .filter_frame = filter_frame, + }, + { NULL } +}; + +static const AVFilterPad signalstats_outputs[] = { + { + .name = "default", + .config_props = config_props, + .type = AVMEDIA_TYPE_VIDEO, + }, + { NULL } +}; + +AVFilter ff_vf_signalstats = { + .name = "signalstats", + .description = "Generate statistics from video analysis.", + .init = init, + .uninit = uninit, + .query_formats = query_formats, + .priv_size = sizeof(SignalstatsContext), + .inputs = signalstats_inputs, + .outputs = signalstats_outputs, + .priv_class = &signalstats_class, + .flags = AVFILTER_FLAG_SLICE_THREADS, +}; |