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FFmpeg/libavfilter/vf_histogram.c
Paul B Mahol df05603291 avfilter/vf_histogram: add colors_mode option
2021-10-14 12:16:30 +02:00

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/*
* Copyright (c) 2012-2019 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/colorspace.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
typedef struct HistogramContext {
const AVClass *class; ///< AVClass context for log and options purpose
int thistogram;
int envelope;
int slide;
unsigned histogram[256*256];
int histogram_size;
int width;
int x_pos;
int mult;
int mid;
int ncomp;
int dncomp;
uint8_t bg_color[4][4];
uint8_t fg_color[4][4];
uint8_t envelope_rgba[4];
uint8_t envelope_color[4];
int level_height;
int scale_height;
int display_mode;
int colors_mode;
int levels_mode;
const AVPixFmtDescriptor *desc, *odesc;
int components;
float fgopacity;
float bgopacity;
int planewidth[4];
int planeheight[4];
int start[4];
AVFrame *out;
} HistogramContext;
#define OFFSET(x) offsetof(HistogramContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define COMMON_OPTIONS \
{ "display_mode", "set display mode", OFFSET(display_mode), AV_OPT_TYPE_INT, {.i64=2}, 0, 2, FLAGS, "display_mode"}, \
{ "d", "set display mode", OFFSET(display_mode), AV_OPT_TYPE_INT, {.i64=2}, 0, 2, FLAGS, "display_mode"}, \
{ "overlay", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "display_mode" }, \
{ "parade", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "display_mode" }, \
{ "stack", NULL, 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "display_mode" }, \
{ "levels_mode", "set levels mode", OFFSET(levels_mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "levels_mode"}, \
{ "m", "set levels mode", OFFSET(levels_mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "levels_mode"}, \
{ "linear", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "levels_mode" }, \
{ "logarithmic", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "levels_mode" }, \
{ "components", "set color components to display", OFFSET(components), AV_OPT_TYPE_INT, {.i64=7}, 1, 15, FLAGS}, \
{ "c", "set color components to display", OFFSET(components), AV_OPT_TYPE_INT, {.i64=7}, 1, 15, FLAGS},
static const AVOption histogram_options[] = {
{ "level_height", "set level height", OFFSET(level_height), AV_OPT_TYPE_INT, {.i64=200}, 50, 2048, FLAGS},
{ "scale_height", "set scale height", OFFSET(scale_height), AV_OPT_TYPE_INT, {.i64=12}, 0, 40, FLAGS},
COMMON_OPTIONS
{ "fgopacity", "set foreground opacity", OFFSET(fgopacity), AV_OPT_TYPE_FLOAT, {.dbl=0.7}, 0, 1, FLAGS},
{ "f", "set foreground opacity", OFFSET(fgopacity), AV_OPT_TYPE_FLOAT, {.dbl=0.7}, 0, 1, FLAGS},
{ "bgopacity", "set background opacity", OFFSET(bgopacity), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS},
{ "b", "set background opacity", OFFSET(bgopacity), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS},
{ "colors_mode", "set colors mode", OFFSET(colors_mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 6, FLAGS, "colors_mode"},
{ "l", "set colors mode", OFFSET(colors_mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 6, FLAGS, "colors_mode"},
{ "whiteonblack", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "colors_mode" },
{ "blackonwhite", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "colors_mode" },
{ "whiteongray", NULL, 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "colors_mode" },
{ "blackongray", NULL, 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, FLAGS, "colors_mode" },
{ "coloronblack", NULL, 0, AV_OPT_TYPE_CONST, {.i64=4}, 0, 0, FLAGS, "colors_mode" },
{ "coloronwhite", NULL, 0, AV_OPT_TYPE_CONST, {.i64=5}, 0, 0, FLAGS, "colors_mode" },
{ "colorongray" , NULL, 0, AV_OPT_TYPE_CONST, {.i64=6}, 0, 0, FLAGS, "colors_mode" },
{ NULL }
};
AVFILTER_DEFINE_CLASS(histogram);
static const enum AVPixelFormat levels_in_pix_fmts[] = {
AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P,
AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVJ422P,
AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUVJ411P,
AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV410P,
AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P,
AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRP,
AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10,
AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12,
AV_PIX_FMT_GRAY8,
AV_PIX_FMT_NONE
};
static const enum AVPixelFormat levels_out_yuv8_pix_fmts[] = {
AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P,
AV_PIX_FMT_NONE
};
static const enum AVPixelFormat levels_out_yuv9_pix_fmts[] = {
AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUV444P9,
AV_PIX_FMT_NONE
};
static const enum AVPixelFormat levels_out_yuv10_pix_fmts[] = {
AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUV444P10,
AV_PIX_FMT_NONE
};
static const enum AVPixelFormat levels_out_yuv12_pix_fmts[] = {
AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUV444P12,
AV_PIX_FMT_NONE
};
static const enum AVPixelFormat levels_out_rgb8_pix_fmts[] = {
AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRP,
AV_PIX_FMT_NONE
};
static const enum AVPixelFormat levels_out_rgb9_pix_fmts[] = {
AV_PIX_FMT_GBRP9,
AV_PIX_FMT_NONE
};
static const enum AVPixelFormat levels_out_rgb10_pix_fmts[] = {
AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10,
AV_PIX_FMT_NONE
};
static const enum AVPixelFormat levels_out_rgb12_pix_fmts[] = {
AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12,
AV_PIX_FMT_NONE
};
static int query_formats(AVFilterContext *ctx)
{
AVFilterFormats *avff;
const AVPixFmtDescriptor *desc;
const enum AVPixelFormat *out_pix_fmts;
int rgb, i, bits;
int ret;
if (!ctx->inputs[0]->incfg.formats ||
!ctx->inputs[0]->incfg.formats->nb_formats) {
return AVERROR(EAGAIN);
}
if (!ctx->inputs[0]->outcfg.formats)
if ((ret = ff_formats_ref(ff_make_format_list(levels_in_pix_fmts), &ctx->inputs[0]->outcfg.formats)) < 0)
return ret;
avff = ctx->inputs[0]->incfg.formats;
desc = av_pix_fmt_desc_get(avff->formats[0]);
rgb = desc->flags & AV_PIX_FMT_FLAG_RGB;
bits = desc->comp[0].depth;
for (i = 1; i < avff->nb_formats; i++) {
desc = av_pix_fmt_desc_get(avff->formats[i]);
if ((rgb != (desc->flags & AV_PIX_FMT_FLAG_RGB)) ||
(bits != desc->comp[0].depth))
return AVERROR(EAGAIN);
}
if (rgb && bits == 8)
out_pix_fmts = levels_out_rgb8_pix_fmts;
else if (rgb && bits == 9)
out_pix_fmts = levels_out_rgb9_pix_fmts;
else if (rgb && bits == 10)
out_pix_fmts = levels_out_rgb10_pix_fmts;
else if (rgb && bits == 12)
out_pix_fmts = levels_out_rgb12_pix_fmts;
else if (bits == 8)
out_pix_fmts = levels_out_yuv8_pix_fmts;
else if (bits == 9)
out_pix_fmts = levels_out_yuv9_pix_fmts;
else if (bits == 10)
out_pix_fmts = levels_out_yuv10_pix_fmts;
else if (bits == 12)
out_pix_fmts = levels_out_yuv12_pix_fmts;
else
return AVERROR(EAGAIN);
if ((ret = ff_formats_ref(ff_make_format_list(out_pix_fmts), &ctx->outputs[0]->incfg.formats)) < 0)
return ret;
return 0;
}
static const uint8_t black_yuva_color[4] = { 0, 127, 127, 255 };
static const uint8_t black_gbrp_color[4] = { 0, 0, 0, 255 };
static const uint8_t white_yuva_color[4] = { 255, 127, 127, 255 };
static const uint8_t white_gbrp_color[4] = { 255, 255, 255, 255 };
static const uint8_t gray_color[4] = { 127, 127, 127, 255 };
static const uint8_t red_yuva_color[4] = { 127, 127, 255, 255 };
static const uint8_t red_gbrp_color[4] = { 255, 0, 0, 255 };
static const uint8_t green_yuva_color[4] = { 255, 127, 127, 255 };
static const uint8_t igreen_yuva_color[4]= { 0, 127, 127, 255 };
static const uint8_t green_gbrp_color[4] = { 0, 255, 0, 255 };
static const uint8_t blue_yuva_color[4] = { 127, 255, 127, 255 };
static const uint8_t blue_gbrp_color[4] = { 0, 0, 255, 255 };
static int config_input(AVFilterLink *inlink)
{
HistogramContext *s = inlink->dst->priv;
int rgb = 0;
s->desc = av_pix_fmt_desc_get(inlink->format);
s->ncomp = s->desc->nb_components;
s->histogram_size = 1 << s->desc->comp[0].depth;
s->mult = s->histogram_size / 256;
switch (inlink->format) {
case AV_PIX_FMT_GBRAP12:
case AV_PIX_FMT_GBRP12:
case AV_PIX_FMT_GBRAP10:
case AV_PIX_FMT_GBRP10:
case AV_PIX_FMT_GBRP9:
case AV_PIX_FMT_GBRAP:
case AV_PIX_FMT_GBRP:
memcpy(s->bg_color[0], black_gbrp_color, 4);
memcpy(s->fg_color[0], white_gbrp_color, 4);
s->start[0] = s->start[1] = s->start[2] = s->start[3] = 0;
memcpy(s->envelope_color, s->envelope_rgba, 4);
rgb = 1;
break;
default:
s->mid = 127;
memcpy(s->bg_color[0], black_yuva_color, 4);
memcpy(s->fg_color[0], white_yuva_color, 4);
s->start[0] = s->start[3] = 0;
s->start[1] = s->start[2] = s->histogram_size / 2;
s->envelope_color[0] = RGB_TO_Y_BT709(s->envelope_rgba[0], s->envelope_rgba[1], s->envelope_rgba[2]);
s->envelope_color[1] = RGB_TO_U_BT709(s->envelope_rgba[0], s->envelope_rgba[1], s->envelope_rgba[2], 0);
s->envelope_color[2] = RGB_TO_V_BT709(s->envelope_rgba[0], s->envelope_rgba[1], s->envelope_rgba[2], 0);
s->envelope_color[3] = s->envelope_rgba[3];
}
for (int i = 1; i < 4; i++) {
memcpy(s->fg_color[i], s->fg_color[0], 4);
memcpy(s->bg_color[i], s->bg_color[0], 4);
}
if (s->display_mode) {
if (s->colors_mode == 1) {
for (int i = 0; i < 4; i++)
for (int j = 0; j < 4; j++)
FFSWAP(uint8_t, s->fg_color[i][j], s->bg_color[i][j]);
} else if (s->colors_mode == 2) {
for (int i = 0; i < 4; i++)
memcpy(s->bg_color[i], gray_color, 4);
} else if (s->colors_mode == 3) {
for (int i = 0; i < 4; i++)
for (int j = 0; j < 4; j++)
FFSWAP(uint8_t, s->fg_color[i][j], s->bg_color[i][j]);
for (int i = 0; i < 4; i++)
memcpy(s->bg_color[i], gray_color, 4);
} else if (s->colors_mode == 4) {
if (rgb) {
memcpy(s->fg_color[0], red_gbrp_color, 4);
memcpy(s->fg_color[1], green_gbrp_color, 4);
memcpy(s->fg_color[2], blue_gbrp_color, 4);
} else {
memcpy(s->fg_color[0], green_yuva_color, 4);
memcpy(s->fg_color[1], blue_yuva_color, 4);
memcpy(s->fg_color[2], red_yuva_color, 4);
}
} else if (s->colors_mode == 5) {
for (int i = 0; i < 4; i++)
for (int j = 0; j < 4; j++)
FFSWAP(uint8_t, s->fg_color[i][j], s->bg_color[i][j]);
if (rgb) {
memcpy(s->fg_color[0], red_gbrp_color, 4);
memcpy(s->fg_color[1], green_gbrp_color, 4);
memcpy(s->fg_color[2], blue_gbrp_color, 4);
} else {
memcpy(s->fg_color[0], igreen_yuva_color,4);
memcpy(s->fg_color[1], blue_yuva_color, 4);
memcpy(s->fg_color[2], red_yuva_color, 4);
}
} else if (s->colors_mode == 6) {
for (int i = 0; i < 4; i++)
memcpy(s->bg_color[i], gray_color, 4);
if (rgb) {
memcpy(s->fg_color[0], red_gbrp_color, 4);
memcpy(s->fg_color[1], green_gbrp_color, 4);
memcpy(s->fg_color[2], blue_gbrp_color, 4);
} else {
memcpy(s->fg_color[0], green_yuva_color, 4);
memcpy(s->fg_color[1], blue_yuva_color, 4);
memcpy(s->fg_color[2], red_yuva_color, 4);
}
}
}
for (int i = 0; i < 4; i++) {
s->fg_color[i][3] = s->fgopacity * 255;
s->bg_color[i][3] = s->bgopacity * 255;
}
s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
s->planeheight[0] = s->planeheight[3] = inlink->h;
s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, s->desc->log2_chroma_w);
s->planewidth[0] = s->planewidth[3] = inlink->w;
return 0;
}
static int config_output(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
HistogramContext *s = ctx->priv;
int ncomp = 0, i;
if (!strcmp(ctx->filter->name, "thistogram"))
s->thistogram = 1;
for (i = 0; i < s->ncomp; i++) {
if ((1 << i) & s->components)
ncomp++;
}
if (s->thistogram) {
if (!s->width)
s->width = ctx->inputs[0]->w;
outlink->w = s->width * FFMAX(ncomp * (s->display_mode == 1), 1);
outlink->h = s->histogram_size * FFMAX(ncomp * (s->display_mode == 2), 1);
} else {
outlink->w = s->histogram_size * FFMAX(ncomp * (s->display_mode == 1), 1);
outlink->h = (s->level_height + s->scale_height) * FFMAX(ncomp * (s->display_mode == 2), 1);
}
s->odesc = av_pix_fmt_desc_get(outlink->format);
s->dncomp = s->odesc->nb_components;
outlink->sample_aspect_ratio = (AVRational){1,1};
return 0;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
HistogramContext *s = inlink->dst->priv;
AVFilterContext *ctx = inlink->dst;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out = s->out;
int i, j, k, l, m;
if (!s->thistogram || !out) {
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out) {
av_frame_free(&in);
return AVERROR(ENOMEM);
}
s->out = out;
for (k = 0; k < 4 && out->data[k]; k++) {
const int is_chroma = (k == 1 || k == 2);
const int dst_h = AV_CEIL_RSHIFT(outlink->h, (is_chroma ? s->odesc->log2_chroma_h : 0));
const int dst_w = AV_CEIL_RSHIFT(outlink->w, (is_chroma ? s->odesc->log2_chroma_w : 0));
if (s->histogram_size <= 256) {
for (i = 0; i < dst_h ; i++)
memset(out->data[s->odesc->comp[k].plane] +
i * out->linesize[s->odesc->comp[k].plane],
s->bg_color[0][k], dst_w);
} else {
const int mult = s->mult;
for (i = 0; i < dst_h ; i++)
for (j = 0; j < dst_w; j++)
AV_WN16(out->data[s->odesc->comp[k].plane] +
i * out->linesize[s->odesc->comp[k].plane] + j * 2,
s->bg_color[0][k] * mult);
}
}
}
for (m = 0, k = 0; k < s->ncomp; k++) {
const int p = s->desc->comp[k].plane;
const int max_value = s->histogram_size - 1 - s->start[p];
const int height = s->planeheight[p];
const int width = s->planewidth[p];
const int mid = s->mid;
double max_hval_log;
unsigned max_hval = 0;
int starty, startx;
if (!((1 << k) & s->components))
continue;
if (s->thistogram) {
starty = m * s->histogram_size * (s->display_mode == 2);
startx = m++ * s->width * (s->display_mode == 1);
} else {
startx = m * s->histogram_size * (s->display_mode == 1);
starty = m++ * (s->level_height + s->scale_height) * (s->display_mode == 2);
}
if (s->histogram_size <= 256) {
for (i = 0; i < height; i++) {
const uint8_t *src = in->data[p] + i * in->linesize[p];
for (j = 0; j < width; j++)
s->histogram[src[j]]++;
}
} else {
for (i = 0; i < height; i++) {
const uint16_t *src = (const uint16_t *)(in->data[p] + i * in->linesize[p]);
for (j = 0; j < width; j++)
s->histogram[src[j]]++;
}
}
for (i = 0; i < s->histogram_size; i++)
max_hval = FFMAX(max_hval, s->histogram[i]);
max_hval_log = log2(max_hval + 1);
if (s->thistogram) {
const int bpp = 1 + (s->histogram_size > 256);
int minh = s->histogram_size - 1, maxh = 0;
if (s->slide == 2) {
s->x_pos = out->width - 1;
for (j = 0; j < outlink->h; j++) {
memmove(out->data[p] + j * out->linesize[p] ,
out->data[p] + j * out->linesize[p] + bpp,
(outlink->w - 1) * bpp);
}
} else if (s->slide == 3) {
s->x_pos = 0;
for (j = 0; j < outlink->h; j++) {
memmove(out->data[p] + j * out->linesize[p] + bpp,
out->data[p] + j * out->linesize[p],
(outlink->w - 1) * bpp);
}
}
for (int i = 0; i < s->histogram_size; i++) {
int idx = s->histogram_size - i - 1;
int value = s->start[p];
if (s->envelope && s->histogram[idx]) {
minh = FFMIN(minh, i);
maxh = FFMAX(maxh, i);
}
if (s->levels_mode)
value += lrint(max_value * (log2(s->histogram[idx] + 1) / max_hval_log));
else
value += lrint(max_value * s->histogram[idx] / (float)max_hval);
if (s->histogram_size <= 256) {
s->out->data[p][(i + starty) * s->out->linesize[p] + startx + s->x_pos] = value;
} else {
AV_WN16(s->out->data[p] + (i + starty) * s->out->linesize[p] + startx * 2 + s->x_pos * 2, value);
}
}
if (s->envelope) {
if (s->histogram_size <= 256) {
s->out->data[0][(minh + starty) * s->out->linesize[p] + startx + s->x_pos] = s->envelope_color[0];
s->out->data[0][(maxh + starty) * s->out->linesize[p] + startx + s->x_pos] = s->envelope_color[0];
if (s->dncomp >= 3) {
s->out->data[1][(minh + starty) * s->out->linesize[p] + startx + s->x_pos] = s->envelope_color[1];
s->out->data[2][(minh + starty) * s->out->linesize[p] + startx + s->x_pos] = s->envelope_color[2];
s->out->data[1][(maxh + starty) * s->out->linesize[p] + startx + s->x_pos] = s->envelope_color[1];
s->out->data[2][(maxh + starty) * s->out->linesize[p] + startx + s->x_pos] = s->envelope_color[2];
}
} else {
const int mult = s->mult;
AV_WN16(s->out->data[0] + (minh + starty) * s->out->linesize[p] + startx * 2 + s->x_pos * 2, s->envelope_color[0] * mult);
AV_WN16(s->out->data[0] + (maxh + starty) * s->out->linesize[p] + startx * 2 + s->x_pos * 2, s->envelope_color[0] * mult);
if (s->dncomp >= 3) {
AV_WN16(s->out->data[1] + (minh + starty) * s->out->linesize[p] + startx * 2 + s->x_pos * 2, s->envelope_color[1] * mult);
AV_WN16(s->out->data[2] + (minh + starty) * s->out->linesize[p] + startx * 2 + s->x_pos * 2, s->envelope_color[2] * mult);
AV_WN16(s->out->data[1] + (maxh + starty) * s->out->linesize[p] + startx * 2 + s->x_pos * 2, s->envelope_color[1] * mult);
AV_WN16(s->out->data[2] + (maxh + starty) * s->out->linesize[p] + startx * 2 + s->x_pos * 2, s->envelope_color[2] * mult);
}
}
}
} else {
for (i = 0; i < s->histogram_size; i++) {
int col_height;
if (s->levels_mode)
col_height = lrint(s->level_height * (1. - (log2(s->histogram[i] + 1) / max_hval_log)));
else
col_height = s->level_height - (s->histogram[i] * (int64_t)s->level_height + max_hval - 1) / max_hval;
if (s->histogram_size <= 256) {
for (j = s->level_height - 1; j >= col_height; j--) {
if (s->display_mode) {
for (l = 0; l < s->dncomp; l++)
out->data[l][(j + starty) * out->linesize[l] + startx + i] = s->fg_color[p][l];
} else {
out->data[p][(j + starty) * out->linesize[p] + startx + i] = 255;
}
}
for (j = s->level_height + s->scale_height - 1; j >= s->level_height; j--)
for (l = 0; l < s->dncomp; l++)
out->data[l][(j + starty) * out->linesize[l] + startx + i] = p == l ? i : mid;
} else {
const int mult = s->mult;
for (j = s->level_height - 1; j >= col_height; j--) {
if (s->display_mode) {
for (l = 0; l < s->dncomp; l++)
AV_WN16(out->data[l] + (j + starty) * out->linesize[l] + startx * 2 + i * 2, s->fg_color[p][l] * mult);
} else {
AV_WN16(out->data[p] + (j + starty) * out->linesize[p] + startx * 2 + i * 2, 255 * mult);
}
}
for (j = s->level_height + s->scale_height - 1; j >= s->level_height; j--)
for (l = 0; l < s->dncomp; l++)
AV_WN16(out->data[l] + (j + starty) * out->linesize[l] + startx * 2 + i * 2, p == l ? i : mid * mult);
}
}
}
memset(s->histogram, 0, s->histogram_size * sizeof(unsigned));
}
out->pts = in->pts;
av_frame_free(&in);
s->x_pos++;
if (s->x_pos >= s->width) {
s->x_pos = 0;
if (s->thistogram && (s->slide == 4 || s->slide == 0)) {
s->out = NULL;
goto end;
}
} else if (s->thistogram && s->slide == 4) {
return 0;
}
if (s->thistogram) {
AVFrame *clone = av_frame_clone(out);
if (!clone)
return AVERROR(ENOMEM);
return ff_filter_frame(outlink, clone);
}
end:
return ff_filter_frame(outlink, out);
}
static const AVFilterPad inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame,
.config_props = config_input,
},
};
static const AVFilterPad outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
},
};
#if CONFIG_HISTOGRAM_FILTER
const AVFilter ff_vf_histogram = {
.name = "histogram",
.description = NULL_IF_CONFIG_SMALL("Compute and draw a histogram."),
.priv_size = sizeof(HistogramContext),
FILTER_INPUTS(inputs),
FILTER_OUTPUTS(outputs),
FILTER_QUERY_FUNC(query_formats),
.priv_class = &histogram_class,
};
#endif /* CONFIG_HISTOGRAM_FILTER */
#if CONFIG_THISTOGRAM_FILTER
static av_cold void uninit(AVFilterContext *ctx)
{
HistogramContext *s = ctx->priv;
av_frame_free(&s->out);
}
static const AVOption thistogram_options[] = {
{ "width", "set width", OFFSET(width), AV_OPT_TYPE_INT, {.i64=0}, 0, 8192, FLAGS},
{ "w", "set width", OFFSET(width), AV_OPT_TYPE_INT, {.i64=0}, 0, 8192, FLAGS},
COMMON_OPTIONS
{ "bgopacity", "set background opacity", OFFSET(bgopacity), AV_OPT_TYPE_FLOAT, {.dbl=0.9}, 0, 1, FLAGS},
{ "b", "set background opacity", OFFSET(bgopacity), AV_OPT_TYPE_FLOAT, {.dbl=0.9}, 0, 1, FLAGS},
{ "envelope", "display envelope", OFFSET(envelope), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
{ "e", "display envelope", OFFSET(envelope), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
{ "ecolor", "set envelope color", OFFSET(envelope_rgba), AV_OPT_TYPE_COLOR, {.str="gold"}, 0, 0, FLAGS },
{ "ec", "set envelope color", OFFSET(envelope_rgba), AV_OPT_TYPE_COLOR, {.str="gold"}, 0, 0, FLAGS },
{ "slide", "set slide mode", OFFSET(slide), AV_OPT_TYPE_INT, {.i64=1}, 0, 4, FLAGS, "slide" },
{"frame", "draw new frames", OFFSET(slide), AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "slide"},
{"replace", "replace old columns with new", OFFSET(slide), AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "slide"},
{"scroll", "scroll from right to left", OFFSET(slide), AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "slide"},
{"rscroll", "scroll from left to right", OFFSET(slide), AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, FLAGS, "slide"},
{"picture", "display graph in single frame", OFFSET(slide), AV_OPT_TYPE_CONST, {.i64=4}, 0, 0, FLAGS, "slide"},
{ NULL }
};
AVFILTER_DEFINE_CLASS(thistogram);
const AVFilter ff_vf_thistogram = {
.name = "thistogram",
.description = NULL_IF_CONFIG_SMALL("Compute and draw a temporal histogram."),
.priv_size = sizeof(HistogramContext),
FILTER_INPUTS(inputs),
FILTER_OUTPUTS(outputs),
FILTER_QUERY_FUNC(query_formats),
.uninit = uninit,
.priv_class = &thistogram_class,
};
#endif /* CONFIG_THISTOGRAM_FILTER */
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