*/
#include "libavutil/avassert.h"
+#include "libavutil/colorspace.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
typedef struct HistogramContext {
const AVClass *class; ///< AVClass context for log and options purpose
int thistogram;
+ int envelope;
unsigned histogram[256*256];
int histogram_size;
int width;
int dncomp;
uint8_t bg_color[4];
uint8_t fg_color[4];
+ uint8_t envelope_rgba[4];
+ uint8_t envelope_color[4];
int level_height;
int scale_height;
int display_mode;
memcpy(s->bg_color, black_gbrp_color, 4);
memcpy(s->fg_color, 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);
break;
default:
memcpy(s->bg_color, black_yuva_color, 4);
memcpy(s->fg_color, 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];
}
s->fg_color[3] = s->fgopacity * 255;
max_hval_log = log2(max_hval + 1);
if (s->thistogram) {
+ int minh = s->histogram_size - 1, maxh = 0;
+
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
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;
{ "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=0.5}, 0, 1, FLAGS},
- { "b", "set background opacity", OFFSET(bgopacity), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS},
+ { "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 },
{ NULL }
};