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avfilter/vf_datascope: cleanup code a little 

Make few helper functions.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2016-09-09 14:16:22 +02:00
parent 5556392b3b
commit 7055b28d98
1 changed files with 57 additions and 35 deletions
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92
libavfilter/vf_datascope.c
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@ -47,6 +47,8 @@ typedef struct DatascopeContext {
FFDrawColor black;
FFDrawColor gray;
void (*pick_color)(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value);
void (*reverse_color)(FFDrawContext *draw, FFDrawColor *color, FFDrawColor *reverse);
int (*filter)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
} DatascopeContext;
@ -97,54 +99,66 @@ static void draw_text(DatascopeContext *s, AVFrame *frame, FFDrawColor *color,
}
}
static void pick_color(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value)
static void pick_color8(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value)
{
int p, i;
color->rgba[3] = 255;
for (p = 0; p < draw->nb_planes; p++) {
if (draw->desc->comp[p].depth == 8) {
if (draw->nb_planes == 1) {
for (i = 0; i < 4; i++) {
value[i] = in->data[0][y * in->linesize[0] + x * draw->pixelstep[0] + i];
color->comp[0].u8[i] = value[i];
}
} else {
value[p] = in->data[p][(y >> draw->vsub[p]) * in->linesize[p] + (x >> draw->hsub[p])];
color->comp[p].u8[0] = value[p];
if (draw->nb_planes == 1) {
for (i = 0; i < 4; i++) {
value[i] = in->data[0][y * in->linesize[0] + x * draw->pixelstep[0] + i];
color->comp[0].u8[i] = value[i];
}
} else {
if (draw->nb_planes == 1) {
for (i = 0; i < 4; i++) {
value[i] = AV_RL16(in->data[0] + y * in->linesize[0] + x * draw->pixelstep[0] + i * 2);
color->comp[0].u16[i] = value[i];
}
} else {
value[p] = AV_RL16(in->data[p] + (y >> draw->vsub[p]) * in->linesize[p] + (x >> draw->hsub[p]) * 2);
color->comp[p].u16[0] = value[p];
}
value[p] = in->data[p][(y >> draw->vsub[p]) * in->linesize[p] + (x >> draw->hsub[p])];
color->comp[p].u8[0] = value[p];
}
}
}
static void reverse_color(FFDrawContext *draw, FFDrawColor *color, FFDrawColor *reverse)
static void pick_color16(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value)
{
int p, i;
color->rgba[3] = 255;
for (p = 0; p < draw->nb_planes; p++) {
if (draw->nb_planes == 1) {
for (i = 0; i < 4; i++) {
value[i] = AV_RL16(in->data[0] + y * in->linesize[0] + x * draw->pixelstep[0] + i * 2);
color->comp[0].u16[i] = value[i];
}
} else {
value[p] = AV_RL16(in->data[p] + (y >> draw->vsub[p]) * in->linesize[p] + (x >> draw->hsub[p]) * 2);
color->comp[p].u16[0] = value[p];
}
}
}
static void reverse_color8(FFDrawContext *draw, FFDrawColor *color, FFDrawColor *reverse)
{
int p;
reverse->rgba[3] = 255;
for (p = 0; p < draw->nb_planes; p++) {
if (draw->desc->comp[p].depth == 8) {
reverse->comp[p].u8[0] = color->comp[p].u8[0] > 127 ? 0 : 255;
reverse->comp[p].u8[1] = color->comp[p].u8[1] > 127 ? 0 : 255;
reverse->comp[p].u8[2] = color->comp[p].u8[2] > 127 ? 0 : 255;
} else {
const unsigned max = (1 << draw->desc->comp[p].depth) - 1;
const unsigned mid = (max + 1) / 2;
reverse->comp[p].u8[0] = color->comp[p].u8[0] > 127 ? 0 : 255;
reverse->comp[p].u8[1] = color->comp[p].u8[1] > 127 ? 0 : 255;
reverse->comp[p].u8[2] = color->comp[p].u8[2] > 127 ? 0 : 255;
}
}
reverse->comp[p].u16[0] = color->comp[p].u16[0] > mid ? 0 : max;
reverse->comp[p].u16[1] = color->comp[p].u16[1] > mid ? 0 : max;
reverse->comp[p].u16[2] = color->comp[p].u16[2] > mid ? 0 : max;
}
static void reverse_color16(FFDrawContext *draw, FFDrawColor *color, FFDrawColor *reverse)
{
int p;
reverse->rgba[3] = 255;
for (p = 0; p < draw->nb_planes; p++) {
const unsigned max = (1 << draw->desc->comp[p].depth) - 1;
const unsigned mid = (max + 1) / 2;
reverse->comp[p].u16[0] = color->comp[p].u16[0] > mid ? 0 : max;
reverse->comp[p].u16[1] = color->comp[p].u16[1] > mid ? 0 : max;
reverse->comp[p].u16[2] = color->comp[p].u16[2] > mid ? 0 : max;
}
}
@ -178,8 +192,8 @@ static int filter_color2(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs
FFDrawColor reverse = { { 0 } };
int value[4] = { 0 };
pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
reverse_color(&s->draw, &color, &reverse);
s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
s->reverse_color(&s->draw, &color, &reverse);
ff_fill_rectangle(&s->draw, &color, out->data, out->linesize,
xoff + x * C * 10, yoff + y * P * 12, C * 10, P * 12);
@ -219,7 +233,7 @@ static int filter_color(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
FFDrawColor color = { { 0 } };
int value[4] = { 0 };
pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
for (p = 0; p < P; p++) {
char text[256];
@ -257,7 +271,7 @@ static int filter_mono(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
FFDrawColor color = { { 0 } };
int value[4] = { 0 };
pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
for (p = 0; p < P; p++) {
char text[256];
@ -354,6 +368,14 @@ static int config_input(AVFilterLink *inlink)
case 2: s->filter = filter_color2; break;
}
if (s->draw.desc->comp[0].depth <= 8) {
s->pick_color = pick_color8;
s->reverse_color = reverse_color8;
} else {
s->pick_color = pick_color16;
s->reverse_color = reverse_color16;
}
return 0;
}