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avfilter/vf_vectorscope: add invert graticule

This commit is contained in:
Paul B Mahol 2019-12-28 12:31:04 +01:00
parent 1669c970b1
commit 29b765d657
2 changed files with 219 additions and 0 deletions
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1
doc/filters.texi
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@ -19003,6 +19003,7 @@ Set what kind of graticule to draw.
@item none
@item green
@item color
@item invert
@end table
@item opacity, o

218
libavfilter/vf_vectorscope.c
View File

@ -33,6 +33,7 @@ enum GraticuleType {
GRAT_NONE,
GRAT_GREEN,
GRAT_COLOR,
GRAT_INVERT,
NB_GRATICULES
};
@ -107,6 +108,7 @@ static const AVOption vectorscope_options[] = {
{ "none", 0, 0, AV_OPT_TYPE_CONST, {.i64=GRAT_NONE}, 0, 0, FLAGS, "graticule" },
{ "green", 0, 0, AV_OPT_TYPE_CONST, {.i64=GRAT_GREEN}, 0, 0, FLAGS, "graticule" },
{ "color", 0, 0, AV_OPT_TYPE_CONST, {.i64=GRAT_COLOR}, 0, 0, FLAGS, "graticule" },
{ "invert", 0, 0, AV_OPT_TYPE_CONST, {.i64=GRAT_INVERT},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=4}, 0, 7, FLAGS, "flags"},
@ -877,6 +879,28 @@ static void draw_dots(uint8_t *dst, int L, int v, float o)
dst[-l + 2] = dst[-l + 2] * f + V;
}
static void draw_idots(uint8_t *dst, int L, float o)
{
const float f = 1. - o;
int l = L * 2;
dst[ l - 3] = dst[ l - 3] * f + (255 - dst[ l - 3]) * o;
dst[ l + 3] = dst[ l + 3] * f + (255 - dst[ l + 3]) * o;
dst[-l - 3] = dst[-l - 3] * f + (255 - dst[-l - 3]) * o;
dst[-l + 3] = dst[-l + 3] * f + (255 - dst[-l + 3]) * o;
l += L;
dst[ l - 3] = dst[ l - 3] * f + (255 - dst[ l - 3]) * o;
dst[ l + 3] = dst[ l + 3] * f + (255 - dst[ l + 3]) * o;
dst[ l - 2] = dst[ l - 2] * f + (255 - dst[ l - 2]) * o;
dst[ l + 2] = dst[ l + 2] * f + (255 - dst[ l + 2]) * o;
dst[-l - 3] = dst[-l - 3] * f + (255 - dst[-l - 3]) * o;
dst[-l + 3] = dst[-l + 3] * f + (255 - dst[-l + 3]) * o;
dst[-l - 2] = dst[-l - 2] * f + (255 - dst[-l - 2]) * o;
dst[-l + 2] = dst[-l + 2] * f + (255 - dst[-l + 2]) * o;
}
static void draw_dots16(uint16_t *dst, int L, int v, float o)
{
const float f = 1. - o;
@ -900,10 +924,83 @@ static void draw_dots16(uint16_t *dst, int L, int v, float o)
dst[-l + 2] = dst[-l + 2] * f + V;
}
static void draw_idots16(uint16_t *dst, int L, int v, float o)
{
const float f = 1. - o;
int l = L * 2;
dst[ l - 3] = dst[ l - 3] * f + (v - dst[ l - 3]) * o;
dst[ l + 3] = dst[ l + 3] * f + (v - dst[ l + 3]) * o;
dst[-l - 3] = dst[-l - 3] * f + (v - dst[-l - 3]) * o;
dst[-l + 3] = dst[-l + 3] * f + (v - dst[-l + 3]) * o;
l += L;
dst[ l - 3] = dst[ l - 3] * f + (v - dst[ l - 3]) * o;
dst[ l + 3] = dst[ l + 3] * f + (v - dst[ l + 3]) * o;
dst[ l - 2] = dst[ l - 2] * f + (v - dst[ l - 2]) * o;
dst[ l + 2] = dst[ l + 2] * f + (v - dst[ l + 2]) * o;
dst[-l - 3] = dst[-l - 3] * f + (v - dst[-l - 3]) * o;
dst[-l + 3] = dst[-l + 3] * f + (v - dst[-l + 3]) * o;
dst[-l - 2] = dst[-l - 2] * f + (v - dst[-l - 2]) * o;
dst[-l + 2] = dst[-l + 2] * f + (v - dst[-l + 2]) * o;
}
static void none_graticule(VectorscopeContext *s, AVFrame *out, int X, int Y, int D, int P)
{
}
static void draw_ihtext(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;
uint8_t *p = out->data[plane] + y * out->linesize[plane] + (x + i * 8);
for (char_y = font_height - 1; char_y >= 0; char_y--) {
for (mask = 0x80; mask; mask >>= 1) {
if (font[txt[i] * font_height + char_y] & mask)
p[0] = p[0] * o2 + (255 - p[0]) * o1;
p++;
}
p += out->linesize[plane] - 8;
}
}
}
}
static void draw_ihtext16(AVFrame *out, int x, int y, float o1, float o2, const char *txt, const uint16_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];
uint16_t *p = (uint16_t *)(out->data[plane] + y * out->linesize[plane]) + (x + i * 8);
for (char_y = font_height - 1; char_y >= 0; char_y--) {
for (mask = 0x80; mask; mask >>= 1) {
if (font[txt[i] * font_height + char_y] & mask)
p[0] = p[0] * o2 + (v - p[0]) * o1;
p++;
}
p += out->linesize[plane] / 2 - 8;
}
}
}
}
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;
@ -1208,6 +1305,123 @@ static void green_graticule(VectorscopeContext *s, AVFrame *out, int X, int Y, i
}
}
static void invert_graticule16(VectorscopeContext *s, AVFrame *out, int X, int Y, int D, int P)
{
const int max = s->size - 1;
const float o = s->opacity;
int i;
for (i = 0; i < 12; i++) {
int x = positions[P][i][X];
int y = positions[P][i][Y];
draw_idots16((uint16_t *)(out->data[D] + y * out->linesize[D] + x * 2), out->linesize[D] / 2, max, o);
draw_idots16((uint16_t *)(out->data[X] + y * out->linesize[X] + x * 2), out->linesize[X] / 2, max, o);
draw_idots16((uint16_t *)(out->data[Y] + y * out->linesize[Y] + x * 2), out->linesize[Y] / 2, max, o);
if (out->data[3])
draw_dots16((uint16_t *)(out->data[3] + y * out->linesize[3] + x * 2), out->linesize[3] / 2, max, o);
}
if (s->flags & 1) {
int x = positions[P][12][X];
int y = positions[P][12][Y];
draw_idots16((uint16_t *)(out->data[D] + y * out->linesize[D] + x * 2), out->linesize[D] / 2, max, o);
draw_idots16((uint16_t *)(out->data[X] + y * out->linesize[X] + x * 2), out->linesize[X] / 2, max, o);
draw_idots16((uint16_t *)(out->data[Y] + y * out->linesize[Y] + x * 2), out->linesize[Y] / 2, max, o);
if (out->data[3])
draw_dots16((uint16_t *)(out->data[3] + y * out->linesize[3] + x * 2), out->linesize[3] / 2, max, o);
}
if (s->flags & 2) {
int x = positions[P][13][X];
int y = positions[P][13][Y];
draw_idots16((uint16_t *)(out->data[D] + y * out->linesize[D] + x * 2), out->linesize[D] / 2, max, o);
draw_idots16((uint16_t *)(out->data[X] + y * out->linesize[X] + x * 2), out->linesize[X] / 2, max, o);
draw_idots16((uint16_t *)(out->data[Y] + y * out->linesize[Y] + x * 2), out->linesize[Y] / 2, max, o);
if (out->data[3])
draw_dots16((uint16_t *)(out->data[3] + y * out->linesize[3] + x * 2), out->linesize[3] / 2, max, o);
}
for (i = 0; i < 6 && s->flags & 4; i++) {
uint16_t color[4] = { max, max, max, max };
int x = positions[P][i][X];
int y = positions[P][i][Y];
if (x > max / 2)
x += 8;
else
x -= 14;
if (y > max / 2)
y += 8;
else
y -= 14;
x = av_clip(x, 0, out->width - 9);
y = av_clip(y, 0, out->height - 9);
draw_ihtext16(out, x, y, o, 1. - o, positions_name[i], color);
}
}
static void invert_graticule(VectorscopeContext *s, AVFrame *out, int X, int Y, int D, int P)
{
const float o = s->opacity;
int i;
for (i = 0; i < 12; i++) {
int x = positions[P][i][X];
int y = positions[P][i][Y];
draw_idots(out->data[D] + y * out->linesize[D] + x, out->linesize[D], o);
draw_idots(out->data[X] + y * out->linesize[X] + x, out->linesize[X], o);
draw_idots(out->data[Y] + y * out->linesize[Y] + x, out->linesize[Y], o);
if (out->data[3])
draw_idots(out->data[3] + y * out->linesize[3] + x, out->linesize[3], o);
}
if (s->flags & 1) {
int x = positions[P][12][X];
int y = positions[P][12][Y];
draw_idots(out->data[D] + y * out->linesize[D] + x, out->linesize[D], o);
draw_idots(out->data[X] + y * out->linesize[X] + x, out->linesize[X], o);
draw_idots(out->data[Y] + y * out->linesize[Y] + x, out->linesize[Y], o);
if (out->data[3])
draw_idots(out->data[3] + y * out->linesize[3] + x, out->linesize[3], o);
}
if (s->flags & 2) {
int x = positions[P][13][X];
int y = positions[P][13][Y];
draw_idots(out->data[D] + y * out->linesize[D] + x, out->linesize[D], o);
draw_idots(out->data[X] + y * out->linesize[X] + x, out->linesize[X], o);
draw_idots(out->data[Y] + y * out->linesize[Y] + x, out->linesize[Y], o);
if (out->data[3])
draw_idots(out->data[3] + y * out->linesize[3] + x, out->linesize[3], o);
}
for (i = 0; i < 6 && s->flags & 4; i++) {
uint8_t color[4] = { 255, 255, 255, 255 };
int x = positions[P][i][X];
int y = positions[P][i][Y];
if (x > 128)
x += 8;
else
x -= 14;
if (y > 128)
y += 8;
else
y -= 14;
x = av_clip(x, 0, out->width - 9);
y = av_clip(y, 0, out->height - 9);
draw_ihtext(out, x, y, o, 1. - o, positions_name[i], color);
}
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
@ -1292,11 +1506,15 @@ static int config_input(AVFilterLink *inlink)
s->graticulef = green_graticule;
else if (s->graticule == GRAT_COLOR)
s->graticulef = color_graticule;
else if (s->graticule == GRAT_INVERT)
s->graticulef = invert_graticule;
} else if (s->is_yuv) {
if (s->graticule == GRAT_GREEN)
s->graticulef = green_graticule16;
else if (s->graticule == GRAT_COLOR)
s->graticulef = color_graticule16;
else if (s->graticule == GRAT_INVERT)
s->graticulef = invert_graticule16;
}
s->bg_color[3] = s->bgopacity * (s->size - 1);