On Fri, Dec 27, 2019 at 03:20:19PM +0100, Paul B Mahol wrote:
> On 12/27/19, Limin Wang <lance.lmw...@gmail.com> wrote:
> > On Fri, Dec 27, 2019 at 12:35:25PM +0100, Paul B Mahol wrote:
> >> You are duplicating some functionality of signalstats filter.
> >>
> > Yes, I have other function need to use the mean and stdev which is
> > support in showinfo filter(only 8bit and don't support packed format,
> > no multi-thread), and signalstats don't support rgb format and don't
> > have stdev, also it have too many other function and difficult to change
> > it, so I think it's more simple to create a new filter to do it.
> >
>
> No, unacceptable. use signalstats filter.
The performance is one major reason also, below is the profiling result for
performance:
./ffmpeg -nostats -f lavfi -i testsrc2=4k:d=2 -vf
bench=start,signalstats,bench=stop -f null -
[bench @ 0x3fb9080] t:0.161589 avg:0.165756 max:0.169923 min:0.161589
[bench @ 0x3fb9080] t:0.160334 avg:0.163948 max:0.169923 min:0.160334
[bench @ 0x3fb9080] t:0.160345 avg:0.163047 max:0.169923 min:0.160334
[bench @ 0x3fb9080] t:0.160924 avg:0.162623 max:0.169923 min:0.160334
[bench @ 0x3fb9080] t:0.160318 avg:0.162238 max:0.169923 min:0.160318
./ffmpeg -nostats -f lavfi -i testsrc2=4k:d=2 -vf
bench=start,colorstats,bench=stop -f null -
[bench @ 0x26f6100] t:0.012596 avg:0.012612 max:0.012628 min:0.012596
[bench @ 0x26f6100] t:0.012542 avg:0.012588 max:0.012628 min:0.012542
[bench @ 0x26f6100] t:0.012529 avg:0.012573 max:0.012628 min:0.012529
[bench @ 0x26f6100] t:0.012532 avg:0.012565 max:0.012628 min:0.012529
[bench @ 0x26f6100] t:0.012527 avg:0.012559 max:0.012628 min:0.012527
[bench @ 0x26f6100] t:0.012525 avg:0.012554 max:0.012628 min:0.012525
[bench @ 0x26f6100] t:0.012522 avg:0.012550 max:0.012628 min:0.012522
[bench @ 0x26f6100] t:0.012552 avg:0.012550 max:0.012628 min:0.012522
>
> >
> >> On 12/27/19, lance.lmw...@gmail.com <lance.lmw...@gmail.com> wrote:
> >> > From: Limin Wang <lance.lmw...@gmail.com>
> >> >
> >> > Signed-off-by: Limin Wang <lance.lmw...@gmail.com>
> >> > ---
> >> > doc/filters.texi | 74 ++++++
> >> > libavfilter/Makefile | 1 +
> >> > libavfilter/allfilters.c | 3 +
> >> > libavfilter/vf_colorstats.c | 461 ++++++++++++++++++++++++++++++++++++
> >> > 4 files changed, 539 insertions(+)
> >> > create mode 100644 libavfilter/vf_colorstats.c
> >> >
> >> > diff --git a/doc/filters.texi b/doc/filters.texi
> >> > index 8c5d3a5760..81968b2c17 100644
> >> > --- a/doc/filters.texi
> >> > +++ b/doc/filters.texi
> >> > @@ -7695,6 +7695,80 @@ For example to convert the input to SMPTE-240M,
> >> > use
> >> > the command:
> >> > colorspace=smpte240m
> >> > @end example
> >> >
> >> > +@section colorstats, colorrgbstats, coloryuvstats
> >> > +The filter provides statistical video measurements such as mean,
> >> > minimum,
> >> > maximum and
> >> > +standard deviation for each frame. The user can check for
> >> > unexpected/accidental errors
> >> > +very quickly with them.
> >> > +
> >> > +@var{colorrgbstats} report the color stats for RGB input video,
> >> > @var{coloryuvstats}
> >> > +to an YUV input video.
> >> > +
> >> > +These filters accept the following parameters:
> >> > +@table @option
> >> > +@item planes
> >> > +Set which planes to filter. Default is only the first plane.
> >> > +@end table
> >> > +
> >> > +By default the filter will report these metadata values if the planes
> >> > +are processed:
> >> > +
> >> > +@table @option
> >> > +@item min.y, min.u, min.v, min.r, min.g, min.b, min.a
> >> > +Display the minimal Y/U/V/R/G/B/A plane value contained within the
> >> > input
> >> > frame.
> >> > +Expressed in range of [0, 1<<bitdepth-1]
> >> > +
> >> > +@item pmin.y, pmin.u, pmin.v, pmin.r, pmin.g, pmin.b, min.a
> >> > +Display the minimal Y/U/V/R/G/B/A plane percentage of maximum contained
> >> > within
> >> > +the input frame. Expressed in range of [0, 1]
> >> > +
> >> > +@item max.y, max.u, max.v, max.r, max.g, max.b, max.a
> >> > +Display the maximum Y/U/V/R/G/B/A plane value contained within the
> >> > input
> >> > frame.
> >> > +Expressed in range of [0, 1<<bitdepth-1]
> >> > +
> >> > +@item pmax.y, pmax.u, pmax.v, pmax.r, pmax.g, pmax.b, pmax.a
> >> > +Display the maximum Y/U/V/R/G/B/A plane percentage of maximum contained
> >> > within
> >> > +the input frame. Expressed in range of [0, 1]
> >> > +
> >> > +@item mean.y, mean.u, mean.v, mean.r, mean.g, mean.b, mean.a
> >> > +Display the Y/U/V/R/G/B/A plane mean value contained within the input
> >> > frame.
> >> > +Expressed in range of [0, 1<<bitdepth-1]
> >> > +
> >> > +@item pmean.y, pmean.u, pmean.v, pmean.r, pmean.g, pmean.b, pmean.a
> >> > +Display the Y/U/V/R/G/B/A plane mean value percentage of maximum
> >> > contained
> >> > within
> >> > +the input frame. Expressed in range of [0, 1]
> >> > +
> >> > +@item stdev.y, stdev.u, stdev.v, stdev.r, stdev.g, stdev.b, stdev.a
> >> > +Display the Y/U/V/R/G/B/A plane standard deviation value contained
> >> > within
> >> > the
> >> > +input frame. Expressed in range of [0, 1<<bitdepth-1]
> >> > +
> >> > +@item pstdev.y, pstdev.u, pstdev.v, pstdev.r, pstdev.g, pstdev.b,
> >> > pstdev.a
> >> > +Display the Y/U/V/R/G/B/A plane standard deviation value percentage of
> >> > maximum contained
> >> > +within the input frame. Expressed in range of [0, 1]
> >> > +@end table
> >> > +
> >> > +@subsection Examples
> >> > +
> >> > +@itemize
> >> > +@item
> >> > +Show all YUV color stats for each frame:
> >> > +@example
> >> > +ffprobe -f lavfi movie=example.mov,coloryuvstats=planes=0xf
> >> > -show_frames
> >> > +@end example
> >> > +
> >> > +@item
> >> > +Draw graph for the pmean and pstdev value of the Y plane per frame:
> >> > +@example
> >> > +ffplay -i example.mov -vf
> >> > coloryuvstats,drawgraph=m1=lavf.colorstats.pmean.y:m2=lavf.colorstats.pstdev.y:min=0:max=1
> >> > +@end example
> >> > +
> >> > +@item
> >> > +Print all RGB color stats for each frame:
> >> > +@example
> >> > +ffplay -i example.mov -vf colorrgbstats=planes=0xf,metadata=mode=print
> >> > +@end example
> >> > +
> >> > +@end itemize
> >> > +
> >> > @section convolution
> >> >
> >> > Apply convolution of 3x3, 5x5, 7x7 or horizontal/vertical up to 49
> >> > elements.
> >> > diff --git a/libavfilter/Makefile b/libavfilter/Makefile
> >> > index 37d4eee858..a007bd32d1 100644
> >> > --- a/libavfilter/Makefile
> >> > +++ b/libavfilter/Makefile
> >> > @@ -182,6 +182,7 @@ OBJS-$(CONFIG_CIESCOPE_FILTER) +=
> >> > vf_ciescope.o
> >> > OBJS-$(CONFIG_CODECVIEW_FILTER) += vf_codecview.o
> >> > OBJS-$(CONFIG_COLORBALANCE_FILTER) += vf_colorbalance.o
> >> > OBJS-$(CONFIG_COLORCHANNELMIXER_FILTER) += vf_colorchannelmixer.o
> >> > +OBJS-$(CONFIG_COLORSTATS_FILTER) += vf_colorstats.o
> >> > OBJS-$(CONFIG_COLORKEY_FILTER) += vf_colorkey.o
> >> > OBJS-$(CONFIG_COLORKEY_OPENCL_FILTER) += vf_colorkey_opencl.o
> >> > opencl.o \
> >> > opencl/colorkey.o
> >> > diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
> >> > index c295f8e403..6b84a45452 100644
> >> > --- a/libavfilter/allfilters.c
> >> > +++ b/libavfilter/allfilters.c
> >> > @@ -172,6 +172,9 @@ extern AVFilter ff_vf_ciescope;
> >> > extern AVFilter ff_vf_codecview;
> >> > extern AVFilter ff_vf_colorbalance;
> >> > extern AVFilter ff_vf_colorchannelmixer;
> >> > +extern AVFilter ff_vf_colorstats;
> >> > +extern AVFilter ff_vf_colorrgbstats;
> >> > +extern AVFilter ff_vf_coloryuvstats;
> >> > extern AVFilter ff_vf_colorkey;
> >> > extern AVFilter ff_vf_colorkey_opencl;
> >> > extern AVFilter ff_vf_colorhold;
> >> > diff --git a/libavfilter/vf_colorstats.c b/libavfilter/vf_colorstats.c
> >> > new file mode 100644
> >> > index 0000000000..7e94c572f9
> >> > --- /dev/null
> >> > +++ b/libavfilter/vf_colorstats.c
> >> > @@ -0,0 +1,461 @@
> >> > +/*
> >> > + * 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/opt.h"
> >> > +#include "libavutil/pixdesc.h"
> >> > +
> >> > +#include "avfilter.h"
> >> > +#include "drawutils.h"
> >> > +#include "filters.h"
> >> > +
> >> > +#define R 0
> >> > +#define G 1
> >> > +#define B 2
> >> > +#define A 3
> >> > +
> >> > +typedef struct ThreadData {
> >> > + AVFrame *in;
> >> > +} ThreadData;
> >> > +
> >> > +typedef struct ColorStatsContext {
> >> > + const AVClass *class;
> >> > +
> >> > + ptrdiff_t width[4];
> >> > + ptrdiff_t height[4];
> >> > +
> >> > + int planes;
> >> > + int step;
> >> > + int bitdepth;
> >> > + int nb_components;
> >> > + int thread_count;
> >> > + int is_16bit;
> >> > + int is_rgb;
> >> > + int force_fmt; /* 0: all, 1: rgb, 2: yuv */
> >> > + uint8_t rgba_map[4];
> >> > + char comps[4];
> >> > +
> >> > + double *mean[4];
> >> > + double *stdev[4];
> >> > +
> >> > + int max;
> >> > + double *min_value[4];
> >> > + double *max_value[4];
> >> > +
> >> > + int (*stats_slice)(AVFilterContext *ctx, void *arg, int jobnr, int
> >> > nb_jobs);
> >> > +} ColorStatsContext;
> >> > +
> >> > +#define OFFSET(x) offsetof(ColorStatsContext, x)
> >> > +#define V AV_OPT_FLAG_VIDEO_PARAM
> >> > +#define F AV_OPT_FLAG_FILTERING_PARAM
> >> > +
> >> > +static const AVOption options[] = {
> >> > + { "planes", "set planes to filter", OFFSET(planes),
> >> > AV_OPT_TYPE_INT,
> >> > {.i64=1}, 1, 0xf, V|F},
> >> > + {NULL}
> >> > +};
> >> > +
> >> > +#define YUV_FORMATS \
> >> > + AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, \
> >> > + AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P, \
> >> > + AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P, \
> >> > + AV_PIX_FMT_YUVJ420P, 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_YUVA420P, AV_PIX_FMT_YUVA422P, \
> >> > + AV_PIX_FMT_YUVA444P16,AV_PIX_FMT_YUVA422P16, \
> >> > + AV_PIX_FMT_YUVA420P16,AV_PIX_FMT_YUVA422P12, \
> >> > + AV_PIX_FMT_YUVA444P12,AV_PIX_FMT_YUVA444P, \
> >> > + AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, \
> >> > + AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16
> >> > +
> >> > +#define RGB_FORMATS \
> >> > + AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR, \
> >> > + AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0, \
> >> > + AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA, AV_PIX_FMT_ABGR, \
> >> > + AV_PIX_FMT_BGRA, AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, \
> >> > + AV_PIX_FMT_RGB48, AV_PIX_FMT_RGBA64, AV_PIX_FMT_GBRP, \
> >> > + AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, \
> >> > + AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, \
> >> > + AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16
> >> > +
> >> > +static const enum AVPixelFormat yuv_pix_fmts[] = { YUV_FORMATS,
> >> > AV_PIX_FMT_NONE };
> >> > +static const enum AVPixelFormat rgb_pix_fmts[] = { RGB_FORMATS,
> >> > AV_PIX_FMT_NONE };
> >> > +static const enum AVPixelFormat all_pix_fmts[] = { RGB_FORMATS,
> >> > YUV_FORMATS, AV_PIX_FMT_NONE };
> >> > +
> >> > +static int query_formats(AVFilterContext *ctx)
> >> > +{
> >> > + const ColorStatsContext *s = ctx->priv;
> >> > + const enum AVPixelFormat *pix_fmts = s->force_fmt == 1 ?
> >> > rgb_pix_fmts :
> >> > + s->force_fmt == 2 ?
> >> > yuv_pix_fmts :
> >> > + all_pix_fmts;
> >> > +
> >> > + AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
> >> > + if (!fmts_list)
> >> > + return AVERROR(ENOMEM);
> >> > + return ff_set_common_formats(ctx, fmts_list);
> >> > +}
> >> > +
> >> > +#define DECLARE_STATS_PLANAR_FUNC(nbits, div)
> >> > \
> >> > +static int stats_slice_planar_##nbits(AVFilterContext *ctx, void *arg,
> >> > int
> >> > jobnr, int nb_jobs) \
> >> > +{
> >> > \
> >> > + const ColorStatsContext *s = ctx->priv;
> >> > \
> >> > + ThreadData *td = arg;
> >> > \
> >> > + const AVFrame *in = td->in;
> >> > \
> >> > + int64_t sum[4] = { 0 }, sum2[4] = { 0 };
> >> > \
> >> > + int32_t count[4] = { 0 };
> >> > \
> >> > + double min_value[4] = { s->max };
> >> > \
> >> > + double max_value[4] = { 0 };
> >> > \
> >> > +
> >> > \
> >> > + for (int i = 0; i < s->nb_components; i++) {
> >> > \
> >> > + const int width = s->width[i];
> >> > \
> >> > + const int height = s->height[i];
> >> > \
> >> > + const int slice_start = (height * jobnr ) / nb_jobs;
> >> > \
> >> > + const int slice_end = (height * (jobnr + 1)) / nb_jobs;
> >> > \
> >> > + int linesize = in->linesize[i] / div;
> >> > \
> >> > + uint##nbits##_t *src = (uint##nbits##_t*)in->data[i] +
> >> > slice_start
> >> > * linesize; \
> >> > +
> >> > \
> >> > + if (!(s->planes & (1 << i)))
> >> > \
> >> > + continue;
> >> > \
> >> > + for (int j = slice_start; j < slice_end; j++) {
> >> > \
> >> > + for (int x = 0; x < width; x++) {
> >> > \
> >> > + sum[i] += src[x];
> >> > \
> >> > + sum2[i] += src[x] * src[x];
> >> > \
> >> > + if (src[i] > max_value[i]) max_value[i] = src[i];
> >> > \
> >> > + if (src[i] < min_value[i]) min_value[i] = src[i];
> >> > \
> >> > + }
> >> > \
> >> > + count[i] += width;
> >> > \
> >> > + src += linesize;
> >> > \
> >> > + }
> >> > \
> >> > +
> >> > \
> >> > + s->mean[i][jobnr] = (double)(sum[i] + count[i] / 2) / count[i];
> >> > \
> >> > + s->stdev[i][jobnr] = sqrt((sum2[i] - sum[i] * (double)sum[i] /
> >> > count[i]) / count[i]); \
> >> > + s->min_value[i][jobnr] = min_value[i];
> >> > \
> >> > + s->max_value[i][jobnr] = max_value[i];
> >> > \
> >> > + }
> >> > \
> >> > +
> >> > \
> >> > + return 0;
> >> > \
> >> > +}
> >> > +DECLARE_STATS_PLANAR_FUNC(8, 1)
> >> > +DECLARE_STATS_PLANAR_FUNC(16, 2)
> >> > +
> >> > +#define DECLARE_STATS_PACKED_FUNC(nbits, div)
> >> > \
> >> > +static int stats_slice_packed_##nbits(AVFilterContext *ctx, void *arg,
> >> > int
> >> > jobnr, int nb_jobs) \
> >> > +{
> >> > \
> >> > + const ColorStatsContext *s = ctx->priv;
> >> > \
> >> > + ThreadData *td = arg;
> >> > \
> >> > + const AVFrame *in = td->in;
> >> > \
> >> > + int64_t sum[4] = { 0 }, sum2[4] = { 0 };
> >> > \
> >> > + double min_value[4] = { s->max };
> >> > \
> >> > + double max_value[4] = { 0 };
> >> > \
> >> > + int32_t count[4] = { 0 };
> >> > \
> >> > + const int width = in->width;
> >> > \
> >> > + const int height = in->height;
> >> > \
> >> > + const int slice_start = (height * jobnr ) / nb_jobs;
> >> > \
> >> > + const int slice_end = (height * (jobnr + 1)) / nb_jobs;
> >> > \
> >> > + int linesize = in->linesize[0] / div;
> >> > \
> >> > + uint##nbits##_t *src = (uint##nbits##_t*)in->data[0] + slice_start
> >> > *
> >> > linesize; \
> >> > + const uint8_t ro = s->rgba_map[R];
> >> > \
> >> > + const uint8_t go = s->rgba_map[G];
> >> > \
> >> > + const uint8_t bo = s->rgba_map[B];
> >> > \
> >> > + const uint8_t ao = s->rgba_map[A];
> >> > \
> >> > +
> >> > \
> >> > + for (int y = slice_start; y < slice_end; y++) {
> >> > \
> >> > + for (int x = 0; x < width * s->step; x += s->step) {
> >> > \
> >> > + const int r = src[x + ro];
> >> > \
> >> > + const int g = src[x + go];
> >> > \
> >> > + const int b = src[x + bo];
> >> > \
> >> > + const int a = src[x + ao];
> >> > \
> >> > +
> >> > \
> >> > + sum[ro] += r;
> >> > \
> >> > + sum[go] += g;
> >> > \
> >> > + sum[bo] += b;
> >> > \
> >> > + sum2[ro] += r * r;
> >> > \
> >> > + sum2[go] += g * g;
> >> > \
> >> > + sum2[bo] += b * b;
> >> > \
> >> > +
> >> > \
> >> > + if (r > max_value[ro]) max_value[ro] = r;
> >> > \
> >> > + if (r < min_value[ro]) min_value[ro] = r;
> >> > \
> >> > + if (g > max_value[go]) max_value[go] = g;
> >> > \
> >> > + if (g < min_value[go]) min_value[go] = g;
> >> > \
> >> > + if (b > max_value[bo]) max_value[bo] = b;
> >> > \
> >> > + if (b < min_value[bo]) min_value[bo] = b;
> >> > \
> >> > + if (s->step == 4) {
> >> > \
> >> > + sum2[ao] += a * a;
> >> > \
> >> > + sum[ao] += a;
> >> > \
> >> > + if (a > max_value[ao]) max_value[ao] = a;
> >> > \
> >> > + if (a < min_value[ao]) min_value[ao] = a;
> >> > \
> >> > + }
> >> > \
> >> > + }
> >> > \
> >> > + count[ro] += width;
> >> > \
> >> > + count[go] += width;
> >> > \
> >> > + count[bo] += width;
> >> > \
> >> > + if (s->step == 4)
> >> > \
> >> > + count[ao] += width;
> >> > \
> >> > + src += linesize;
> >> > \
> >> > + }
> >> > \
> >> > +
> >> > \
> >> > + for (int p = 0; p < s->nb_components; p++) {
> >> > \
> >> > + int ci = s->is_rgb ? s->rgba_map[p] : p;
> >> > \
> >> > + double variance;
> >> > \
> >> > +
> >> > \
> >> > + s->mean[ci][jobnr] = (double)(sum[ci] + count[ci] / 2) /
> >> > count[ci];
> >> > \
> >> > + variance = (sum2[ci] - sum[ci] * (double)sum[ci] / count[ci]) /
> >> > count[ci]; \
> >> > + s->stdev[ci][jobnr] = sqrt(variance);
> >> > \
> >> > + s->min_value[ci][jobnr] = min_value[ci];
> >> > \
> >> > + s->max_value[ci][jobnr] = max_value[ci];
> >> > \
> >> > + }
> >> > \
> >> > +
> >> > \
> >> > + return 0;
> >> > \
> >> > +}
> >> > +DECLARE_STATS_PACKED_FUNC(8, 1)
> >> > +DECLARE_STATS_PACKED_FUNC(16, 2)
> >> > +
> >> > +static av_cold void uninit(AVFilterContext *ctx)
> >> > +{
> >> > + ColorStatsContext *s = ctx->priv;
> >> > +
> >> > + for (int i = 0; i < s->nb_components; i++) {
> >> > + av_freep(&s->mean[i]);
> >> > + av_freep(&s->stdev[i]);
> >> > + av_freep(&s->min_value[i]);
> >> > + av_freep(&s->max_value[i]);
> >> > + }
> >> > +}
> >> > +
> >> > +static int config_input(AVFilterLink *inlink)
> >> > +{
> >> > + AVFilterContext *ctx = inlink->dst;
> >> > + ColorStatsContext *s = ctx->priv;
> >> > + const AVPixFmtDescriptor *desc =
> >> > av_pix_fmt_desc_get(inlink->format);
> >> > +
> >> > + s->nb_components = desc->nb_components;
> >> > + s->bitdepth = desc->comp[0].depth;
> >> > + s->is_16bit = s->bitdepth > 8;
> >> > + s->step = av_get_padded_bits_per_pixel(desc) >> (3 + s->is_16bit);
> >> > + s->max = 1 << s->bitdepth - 1;
> >> > +
> >> > + s->is_rgb = ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0;
> >> > + s->comps[0] = s->is_rgb ? 'r' : 'y' ;
> >> > + s->comps[1] = s->is_rgb ? 'g' : 'u' ;
> >> > + s->comps[2] = s->is_rgb ? 'b' : 'v' ;
> >> > + s->comps[3] = 'a';
> >> > +
> >> > + s->thread_count = FFMAX(1, FFMIN(inlink->h,
> >> > ff_filter_get_nb_threads(ctx)));
> >> > + for (int i = 0; i < s->nb_components; i++) {
> >> > + ptrdiff_t line_size = av_image_get_linesize(inlink->format,
> >> > inlink->w, i);
> >> > +
> >> > + s->width[i] = line_size >> (s->bitdepth > 8);
> >> > + s->height[i] = inlink->h >> ((i == 1 || i == 2) ?
> >> > desc->log2_chroma_h : 0);
> >> > +
> >> > + s->mean[i] = av_mallocz_array(s->thread_count,
> >> > sizeof(*s->mean[i]));
> >> > + s->stdev[i] = av_mallocz_array(s->thread_count,
> >> > sizeof(*s->stdev[i]));
> >> > + s->max_value[i] = av_mallocz_array(s->thread_count,
> >> > sizeof(*s->max_value[i]));
> >> > + s->min_value[i] = av_mallocz_array(s->thread_count,
> >> > sizeof(*s->min_value[i]));
> >> > + if (!s->mean[i] || !s->stdev[i] || !s->max_value[i] ||
> >> > !s->min_value[i])
> >> > + return AVERROR(ENOMEM);
> >> > + for (int j = 0; j < s->thread_count; j++) {
> >> > + s->min_value[i][j] = (1 << s->bitdepth);
> >> > + s->max_value[i][j] = 0;
> >> > + }
> >> > + }
> >> > +
> >> > + if (desc->flags & AV_PIX_FMT_FLAG_PLANAR)
> >> > + s->stats_slice = s->bitdepth <= 8 ? stats_slice_planar_8 :
> >> > stats_slice_planar_16;
> >> > + else
> >> > + s->stats_slice = s->bitdepth <= 8 ? stats_slice_packed_8 :
> >> > stats_slice_packed_16;
> >> > +
> >> > + return 0;
> >> > +}
> >> > +
> >> > +static void set_meta_float(AVDictionary **metadata, const char *key,
> >> > char
> >> > c, float d)
> >> > +{
> >> > + char value[128];
> >> > + char key2[128];
> >> > +
> >> > + snprintf(value, sizeof(value), "%.2f", d);
> >> > + if (c)
> >> > + snprintf(key2, sizeof(key2), "lavf.colorstats.%s.%c", key, c);
> >> > + else
> >> > + snprintf(key2, sizeof(key2), "lavf.colorstats.%s", key);
> >> > + av_dict_set(metadata, key2, value, 0);
> >> > +}
> >> > +
> >> > +static void set_meta_int(AVDictionary **metadata, const char *key, char
> >> > c,
> >> > int d)
> >> > +{
> >> > + char value[128];
> >> > + char key2[128];
> >> > +
> >> > + snprintf(value, sizeof(value), "%d", d);
> >> > + if (c)
> >> > + snprintf(key2, sizeof(key2), "lavf.colorstats.%s.%c", key, c);
> >> > + else
> >> > + snprintf(key2, sizeof(key2), "lavf.colorstats.%s", key);
> >> > + av_dict_set(metadata, key2, value, 0);
> >> > +}
> >> > +
> >> > +static void report_detect_result(AVFilterContext *ctx, AVFrame *in)
> >> > +{
> >> > + const ColorStatsContext *s = ctx->priv;
> >> > + double mean[4] = { 0 };
> >> > + double stdev[4] = { 0 };
> >> > + double min_value[4] = { s->max };
> >> > + double max_value[4] = { 0 };
> >> > + int cidx;
> >> > +
> >> > + for (int p = 0; p < s->nb_components; p++) {
> >> > + cidx = s->is_rgb ? s->rgba_map[p] : p;
> >> > +
> >> > + if (!(s->planes & (1 << p)))
> >> > + continue;
> >> > +
> >> > + for (int j = 0; j < s->thread_count; j++) {
> >> > + mean[cidx] += s->mean[cidx][j];
> >> > + stdev[cidx] += s->stdev[cidx][j];
> >> > + if (s->min_value[cidx][j] < min_value[cidx])
> >> > + min_value[cidx] = s->min_value[cidx][j];
> >> > + if (s->max_value[cidx][j] > max_value[cidx])
> >> > + max_value[cidx] = s->max_value[cidx][j];
> >> > + }
> >> > + mean[cidx] = mean[cidx] / s->thread_count;
> >> > + stdev[cidx] = stdev[cidx] / s->thread_count;
> >> > +
> >> > + set_meta_int(&in->metadata, "min", s->comps[p],
> >> > min_value[cidx]);
> >> > + set_meta_int(&in->metadata, "max", s->comps[p],
> >> > max_value[cidx]);
> >> > + set_meta_int(&in->metadata, "mean", s->comps[p], mean[cidx]);
> >> > + set_meta_int(&in->metadata, "stdev", s->comps[p], stdev[cidx]);
> >> > +
> >> > + set_meta_float(&in->metadata, "pmin", s->comps[p],
> >> > min_value[cidx]
> >> > / s->max);
> >> > + set_meta_float(&in->metadata, "pmax", s->comps[p],
> >> > max_value[cidx]
> >> > / s->max);
> >> > + set_meta_float(&in->metadata, "pmean", s->comps[p], mean[cidx]
> >> > /
> >> > s->max);
> >> > + set_meta_float(&in->metadata, "pstdev", s->comps[p],
> >> > stdev[cidx] /
> >> > s->max);
> >> > + }
> >> > +}
> >> > +
> >> > +static int activate(AVFilterContext *ctx)
> >> > +{
> >> > + int ret;
> >> > + AVFilterLink *inlink = ctx->inputs[0];
> >> > + AVFilterLink *outlink = ctx->outputs[0];
> >> > + ColorStatsContext *s = ctx->priv;
> >> > + AVFrame *in;
> >> > + ThreadData td;
> >> > +
> >> > + FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
> >> > +
> >> > + ret = ff_inlink_consume_frame(inlink, &in);
> >> > + if (ret < 0)
> >> > + return ret;
> >> > +
> >> > + if (in) {
> >> > + td.in = in;
> >> > + ctx->internal->execute(ctx, s->stats_slice, &td, NULL,
> >> > s->thread_count);
> >> > +
> >> > + report_detect_result(ctx, in);
> >> > + return ff_filter_frame(outlink, in);
> >> > + }
> >> > +
> >> > + FF_FILTER_FORWARD_STATUS(inlink, outlink);
> >> > + FF_FILTER_FORWARD_WANTED(outlink, inlink);
> >> > +
> >> > + return FFERROR_NOT_READY;
> >> > +}
> >> > +
> >> > +static const AVFilterPad inputs[] = {
> >> > + {
> >> > + .name = "default",
> >> > + .type = AVMEDIA_TYPE_VIDEO,
> >> > + .config_props = config_input,
> >> > + },
> >> > + { NULL }
> >> > +};
> >> > +
> >> > +static const AVFilterPad outputs[] = {
> >> > + {
> >> > + .name = "default",
> >> > + .type = AVMEDIA_TYPE_VIDEO,
> >> > + },
> >> > + { NULL }
> >> > +};
> >> > +
> >> > +#define DEFINE_COLOR_FILTER(name_, description_)
> >> > \
> >> > + AVFilter ff_vf_##name_ = {
> >> > \
> >> > + .name = #name_,
> >> > \
> >> > + .description = NULL_IF_CONFIG_SMALL(description_),
> >> > \
> >> > + .priv_size = sizeof(ColorStatsContext),
> >> > \
> >> > + .priv_class = &name_ ## _class,
> >> > \
> >> > + .init = name_##_init,
> >> > \
> >> > + .uninit = uninit,
> >> > \
> >> > + .query_formats = query_formats,
> >> > \
> >> > + .inputs = inputs,
> >> > \
> >> > + .outputs = outputs,
> >> > \
> >> > + .activate = activate,
> >> > \
> >> > + .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC |
> >> > \
> >> > + AVFILTER_FLAG_SLICE_THREADS,
> >> > \
> >> > + }
> >> > +
> >> > +#if CONFIG_COLORSTATS_FILTER
> >> > +
> >> > +#define colorstats_options options
> >> > +AVFILTER_DEFINE_CLASS(colorstats);
> >> > +
> >> > +static int colorstats_init(AVFilterContext *ctx)
> >> > +{
> >> > + return 0;
> >> > +}
> >> > +
> >> > +DEFINE_COLOR_FILTER(colorstats, "Video color stats.");
> >> > +#endif
> >> > +
> >> > +#if CONFIG_COLORRGBSTATS_FILTER
> >> > +
> >> > +#define colorrgbstats_options options
> >> > +AVFILTER_DEFINE_CLASS(colorrgbstats);
> >> > +
> >> > +static int colorrgbstats_init(AVFilterContext *ctx)
> >> > +{
> >> > + ColorStatsContext *s = ctx->priv;
> >> > +
> >> > + s->force_fmt = 1;
> >> > + return 0;
> >> > +}
> >> > +
> >> > +DEFINE_COLOR_FILTER(colorrgbstats, "Video RGB color stats.");
> >> > +#endif
> >> > +
> >> > +#if CONFIG_COLORYUVSTATS_FILTER
> >> > +
> >> > +#define coloryuvstats_options options
> >> > +AVFILTER_DEFINE_CLASS(coloryuvstats);
> >> > +
> >> > +static int coloryuvstats_init(AVFilterContext *ctx)
> >> > +{
> >> > + ColorStatsContext *s = ctx->priv;
> >> > +
> >> > + s->force_fmt = 2;
> >> > + return 0;
> >> > +}
> >> > +
> >> > +DEFINE_COLOR_FILTER(coloryuvstats, "Video YUV color stats.");
> >> > +#endif
> >> > --
> >> > 2.21.0
> >> >
> >> > _______________________________________________
> >> > ffmpeg-devel mailing list
> >> > ffmpeg-devel@ffmpeg.org
> >> > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> >> >
> >> > To unsubscribe, visit link above, or email
> >> > ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
> >
> > --
> > Thanks,
> > Limin Wang
> > _______________________________________________
> > ffmpeg-devel mailing list
> > ffmpeg-devel@ffmpeg.org
> > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> >
> > To unsubscribe, visit link above, or email
> > ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
> To unsubscribe, visit link above, or email
> ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
--
Thanks,
Limin Wang
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