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ffmpeg.wasm-core
Commit 23d8b79a authored by Paul B Mahol's avatar Paul B Mahol
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avfilter/vf_waveform: add text to graticule 

Signed-off-by: 's avatarPaul B Mahol <onemda@gmail.com>
parent 5451be50
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Showing with 163 additions and 10 deletions
doc/filters.texi
View file @ 23d8b79a
......@@ -13175,6 +13175,14 @@ Display green graticule showing legal broadcast ranges.
@item opacity, o
Set graticule opacity.
@item flags, fl
Set graticule flags.
@table @samp
@item numbers
Draw numbers above lines. By default enabled.
@end table
@end table
@section xbr
......
libavfilter/vf_waveform.c
View file @ 23d8b79a
......@@ -23,6 +23,7 @@
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#include "libavutil/xga_font_data.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
......@@ -57,6 +58,7 @@ typedef struct WaveformContext {
int *emin[4][4];
int *peak;
int filter;
int flags;
int bits;
int max;
int size;
......@@ -104,6 +106,9 @@ static const AVOption waveform_options[] = {
{ "green", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "graticule" },
{ "opacity", "set graticule opacity", OFFSET(opacity), AV_OPT_TYPE_FLOAT, {.dbl=0.75}, 0, 1, FLAGS },
{ "o", "set graticule opacity", OFFSET(opacity), AV_OPT_TYPE_FLOAT, {.dbl=0.75}, 0, 1, FLAGS },
{ "flags", "set graticule flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64=1}, 0, 1, FLAGS, "flags" },
{ "fl", "set graticule flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64=1}, 0, 1, FLAGS, "flags" },
{ "numbers", "draw numbers", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "flags" },
{ NULL }
};
......@@ -1236,6 +1241,108 @@ static void blend_hline16(uint16_t *dst, int width, float o1, float o2, int v)
}
}
static void draw_htext(AVFrame *out, int x, int y, float o1, float o2, const char *txt, const uint8_t color[4])
{
const uint8_t *font;
int font_height;
int i, plane;
font = avpriv_cga_font, font_height = 8;
for (plane = 0; plane < 4 && out->data[plane]; plane++) {
for (i = 0; txt[i]; i++) {
int char_y, mask;
int v = color[plane];
uint8_t *p = out->data[plane] + y * out->linesize[plane] + (x + i * 8);
for (char_y = 0; char_y < font_height; char_y++) {
for (mask = 0x80; mask; mask >>= 1) {
if (font[txt[i] * font_height + char_y] & mask)
p[0] = p[0] * o2 + v * o1;
p++;
}
p += out->linesize[plane] - 8;
}
}
}
}
static void draw_htext16(AVFrame *out, int x, int y, int mult, float o1, float o2, const char *txt, const uint8_t color[4])
{
const uint8_t *font;
int font_height;
int i, plane;
font = avpriv_cga_font, font_height = 8;
for (plane = 0; plane < 4 && out->data[plane]; plane++) {
for (i = 0; txt[i]; i++) {
int char_y, mask;
int v = color[plane] * mult;
uint16_t *p = (uint16_t *)(out->data[plane] + y * out->linesize[plane]) + (x + i * 8);
for (char_y = 0; char_y < font_height; char_y++) {
for (mask = 0x80; mask; mask >>= 1) {
if (font[txt[i] * font_height + char_y] & mask)
p[0] = p[0] * o2 + v * o1;
p++;
}
p += out->linesize[plane] / 2 - 8;
}
}
}
}
static void draw_vtext(AVFrame *out, int x, int y, float o1, float o2, const char *txt, const uint8_t color[4])
{
const uint8_t *font;
int font_height;
int i, plane;
font = avpriv_cga_font, font_height = 8;
for (plane = 0; plane < 4 && out->data[plane]; plane++) {
for (i = 0; txt[i]; i++) {
int char_y, mask;
int v = color[plane];
for (char_y = font_height - 1; char_y >= 0; char_y--) {
uint8_t *p = out->data[plane] + (y + i * 10) * out->linesize[plane] + x;
for (mask = 0x80; mask; mask >>= 1) {
if (font[txt[i] * font_height + font_height - 1 - char_y] & mask)
p[char_y] = p[char_y] * o2 + v * o1;
p += out->linesize[plane];
}
}
}
}
}
static void draw_vtext16(AVFrame *out, int x, int y, int mult, float o1, float o2, const char *txt, const uint8_t color[4])
{
const uint8_t *font;
int font_height;
int i, plane;
font = avpriv_cga_font, font_height = 8;
for (plane = 0; plane < 4 && out->data[plane]; plane++) {
for (i = 0; txt[i]; i++) {
int char_y, mask;
int v = color[plane] * mult;
for (char_y = 0; char_y < font_height; char_y++) {
uint16_t *p = (uint16_t *)(out->data[plane] + (y + i * 10) * out->linesize[plane]) + x;
for (mask = 0x80; mask; mask >>= 1) {
if (font[txt[i] * font_height + font_height - 1 - char_y] & mask)
p[char_y] = p[char_y] * o2 + v * o1;
p += out->linesize[plane] / 2;
}
}
}
}
}
static void graticule_none(WaveformContext *s, AVFrame *out)
{
}
......@@ -1244,12 +1351,13 @@ static void graticule_green_row(WaveformContext *s, AVFrame *out)
{
const float o1 = s->opacity;
const float o2 = 1. - o1;
int c, p, l, offset = 0;
int k = 0, c, p, l, offset = 0;
for (c = 0; c < s->ncomp; c++) {
if (!((1 << c) & s->pcomp))
if (!((1 << c) & s->pcomp) || (!s->display && k > 0))
continue;
k++;
for (p = 0; p < s->ncomp; p++) {
const int v = green_yuva_color[p];
for (l = 0; l < FF_ARRAY_ELEMS(lines[0]); l++) {
......@@ -1260,6 +1368,14 @@ static void graticule_green_row(WaveformContext *s, AVFrame *out)
}
}
for (l = 0; l < FF_ARRAY_ELEMS(lines[0]) && (s->flags & 1); l++) {
const int x = offset + (s->mirror ? 255 - lines[c][l] : lines[c][l]) - 10;
char text[16];
snprintf(text, sizeof(text), "%d", lines[c][l]);
draw_vtext(out, x, 2, o1, o2, text, green_yuva_color);
}
offset += 256 * s->display;
}
}
......@@ -1269,22 +1385,31 @@ static void graticule16_green_row(WaveformContext *s, AVFrame *out)
const float o1 = s->opacity;
const float o2 = 1. - o1;
const int mult = s->size / 256;
int c, p, l, offset = 0;
int k = 0, c, p, l, offset = 0;
for (c = 0; c < s->ncomp; c++) {
if (!((1 << c) & s->pcomp))
if (!((1 << c) & s->pcomp) || (!s->display && k > 0))
continue;
k++;
for (p = 0; p < s->ncomp; p++) {
const int v = green_yuva_color[p] * mult;
for (l = 0; l < FF_ARRAY_ELEMS(lines[0]); l++) {
int x = offset + (s->mirror ? 255 - lines[c][l] : lines[c][l]) * mult;
int x = offset + (s->mirror ? s->size - 1 - lines[c][l] * mult : lines[c][l] * mult);
uint16_t *dst = (uint16_t *)(out->data[p]) + x;
blend_vline16(dst, out->height, out->linesize[p], o1, o2, v);
}
}
for (l = 0; l < FF_ARRAY_ELEMS(lines[0]) && (s->flags & 1); l++) {
const int x = offset + (s->mirror ? s->size - 1 - lines[c][l] * mult : lines[c][l] * mult) - 10;
char text[16];
snprintf(text, sizeof(text), "%d", lines[c][l] * mult);
draw_vtext16(out, x, 2, mult, o1, o2, text, green_yuva_color);
}
offset += s->size * s->display;
}
}
......@@ -1293,12 +1418,13 @@ static void graticule_green_column(WaveformContext *s, AVFrame *out)
{
const float o1 = s->opacity;
const float o2 = 1. - o1;
int c, p, l, offset = 0;
int k = 0, c, p, l, offset = 0;
for (c = 0; c < s->ncomp; c++) {
if (!((1 << c) & s->pcomp))
if ((!((1 << c) & s->pcomp) || (!s->display && k > 0)))
continue;
k++;
for (p = 0; p < s->ncomp; p++) {
const int v = green_yuva_color[p];
for (l = 0; l < FF_ARRAY_ELEMS(lines[0]); l++) {
......@@ -1309,6 +1435,15 @@ static void graticule_green_column(WaveformContext *s, AVFrame *out)
}
}
for (l = 0; l < FF_ARRAY_ELEMS(lines[0]) && (s->flags & 1); l++) {
const int y = offset + (s->mirror ? 255 - lines[c][l] : lines[c][l]) - 10;
char text[16];
snprintf(text, sizeof(text), "%d", lines[c][l]);
draw_htext(out, 2, y,
o1, o2, text, green_yuva_color);
}
offset += 256 * s->display;
}
}
......@@ -1318,22 +1453,32 @@ static void graticule16_green_column(WaveformContext *s, AVFrame *out)
const float o1 = s->opacity;
const float o2 = 1. - o1;
const int mult = s->size / 256;
int c, p, l, offset = 0;
int k = 0, c, p, l, offset = 0;
for (c = 0; c < s->ncomp; c++) {
if (!((1 << c) & s->pcomp))
if ((!((1 << c) & s->pcomp) || (!s->display && k > 0)))
continue;
k++;
for (p = 0; p < s->ncomp; p++) {
const int v = green_yuva_color[p] * mult;
for (l = 0; l < FF_ARRAY_ELEMS(lines[0]); l++) {
int y = offset + (s->mirror ? 255 - lines[c][l] : lines[c][l]) * mult;
int y = offset + (s->mirror ? s->size - 1 - lines[c][l] * mult : lines[c][l] * mult);
uint16_t *dst = (uint16_t *)(out->data[p] + y * out->linesize[p]);
blend_hline16(dst, out->width, o1, o2, v);
}
}
for (l = 0; l < FF_ARRAY_ELEMS(lines[0]) && (s->flags & 1); l++) {
const int y = offset + (s->mirror ? s->size - 1 - lines[c][l] * mult : lines[c][l] * mult) - 10;
char text[16];
snprintf(text, sizeof(text), "%d", lines[c][l] * mult);
draw_htext16(out, 2, y,
mult, o1, o2, text, green_yuva_color);
}
offset += s->size * s->display;
}
}
......
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