[FFmpeg-devel] [PATCH v1] avfilter: add colorstats, colorrgbstats, coloryuvstats video filter
Paul B Mahol
onemda at gmail.com
Fri Dec 27 16:20:19 EET 2019
On 12/27/19, Limin Wang <lance.lmwang at 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.
>
>> On 12/27/19, lance.lmwang at gmail.com <lance.lmwang at gmail.com> wrote:
>> > From: Limin Wang <lance.lmwang at gmail.com>
>> >
>> > Signed-off-by: Limin Wang <lance.lmwang at 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
>> >
>> > + at 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.
>> > +
>> > + at var{colorrgbstats} report the color stats for RGB input video,
>> > @var{coloryuvstats}
>> > +to an YUV input video.
>> > +
>> > +These filters accept the following parameters:
>> > + at table @option
>> > + at item planes
>> > +Set which planes to filter. Default is only the first plane.
>> > + at end table
>> > +
>> > +By default the filter will report these metadata values if the planes
>> > +are processed:
>> > +
>> > + at table @option
>> > + at 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]
>> > +
>> > + at 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]
>> > +
>> > + at 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]
>> > +
>> > + at 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]
>> > +
>> > + at 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]
>> > +
>> > + at 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]
>> > +
>> > + at 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]
>> > +
>> > + at 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]
>> > + at end table
>> > +
>> > + at subsection Examples
>> > +
>> > + at itemize
>> > + at item
>> > +Show all YUV color stats for each frame:
>> > + at example
>> > +ffprobe -f lavfi movie=example.mov,coloryuvstats=planes=0xf
>> > -show_frames
>> > + at end example
>> > +
>> > + at item
>> > +Draw graph for the pmean and pstdev value of the Y plane per frame:
>> > + at example
>> > +ffplay -i example.mov -vf
>> > coloryuvstats,drawgraph=m1=lavf.colorstats.pmean.y:m2=lavf.colorstats.pstdev.y:min=0:max=1
>> > + at end example
>> > +
>> > + at item
>> > +Print all RGB color stats for each frame:
>> > + at example
>> > +ffplay -i example.mov -vf colorrgbstats=planes=0xf,metadata=mode=print
>> > + at end example
>> > +
>> > + at 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 at ffmpeg.org
>> > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>> >
>> > To unsubscribe, visit link above, or email
>> > ffmpeg-devel-request at ffmpeg.org with subject "unsubscribe".
>
> --
> Thanks,
> Limin Wang
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel at ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>
> To unsubscribe, visit link above, or email
> ffmpeg-devel-request at ffmpeg.org with subject "unsubscribe".
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