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avfilter/vf_vectorscope: implement envelope support

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2015-08-29 21:18:53 +00:00
parent 4bd99f715d
commit 7516aa9a4a
2 changed files with 95 additions and 8 deletions
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16
doc/filters.texi
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@ -10603,6 +10603,22 @@ Set which color component will be represented on Y-axis. Default is @code{2}.
@item intensity
Set intensity, used by modes: gray, color and color3 for increasing brightness
of color component which represents frequency of (X, Y) location in graph.
@item envelope, e
@table @samp
@item none
No envelope, this is default.
@item instant
Instant envelope, even darkest single pixel will be clearly highlighted.
@item peak
Hold maximum and minimum values presented in graph over time. This way you
can still spot out of range values without constantly looking at vectorscope.
@item peak+instant
Peak and instant envelope combined together.
@end table
@end table
@anchor{vidstabdetect}

87
libavfilter/vf_vectorscope.c
View File

@ -45,6 +45,8 @@ typedef struct VectorscopeContext {
int planeheight[4];
int x, y, pd;
int is_yuv;
int envelope;
uint8_t peak[256][256];
} VectorscopeContext;
#define OFFSET(x) offsetof(VectorscopeContext, x)
@ -53,15 +55,21 @@ typedef struct VectorscopeContext {
static const AVOption vectorscope_options[] = {
{ "mode", "set vectorscope mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, MODE_NB-1, FLAGS, "mode"},
{ "m", "set vectorscope mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, MODE_NB-1, FLAGS, "mode"},
{ "gray", 0, 0, AV_OPT_TYPE_CONST, {.i64=GRAY}, 0, 0, FLAGS, "mode" },
{ "color", 0, 0, AV_OPT_TYPE_CONST, {.i64=COLOR}, 0, 0, FLAGS, "mode" },
{ "color2", 0, 0, AV_OPT_TYPE_CONST, {.i64=COLOR2}, 0, 0, FLAGS, "mode" },
{ "color3", 0, 0, AV_OPT_TYPE_CONST, {.i64=COLOR3}, 0, 0, FLAGS, "mode" },
{ "color4", 0, 0, AV_OPT_TYPE_CONST, {.i64=COLOR4}, 0, 0, FLAGS, "mode" },
{ "gray", 0, 0, AV_OPT_TYPE_CONST, {.i64=GRAY}, 0, 0, FLAGS, "mode" },
{ "color", 0, 0, AV_OPT_TYPE_CONST, {.i64=COLOR}, 0, 0, FLAGS, "mode" },
{ "color2", 0, 0, AV_OPT_TYPE_CONST, {.i64=COLOR2}, 0, 0, FLAGS, "mode" },
{ "color3", 0, 0, AV_OPT_TYPE_CONST, {.i64=COLOR3}, 0, 0, FLAGS, "mode" },
{ "color4", 0, 0, AV_OPT_TYPE_CONST, {.i64=COLOR4}, 0, 0, FLAGS, "mode" },
{ "x", "set color component on X axis", OFFSET(x), AV_OPT_TYPE_INT, {.i64=1}, 0, 2, FLAGS},
{ "y", "set color component on Y axis", OFFSET(y), AV_OPT_TYPE_INT, {.i64=2}, 0, 2, FLAGS},
{ "intensity", "set intensity", OFFSET(intensity), AV_OPT_TYPE_INT, {.i64=1}, 1, 255, FLAGS},
{ "i", "set intensity", OFFSET(intensity), AV_OPT_TYPE_INT, {.i64=1}, 1, 255, FLAGS},
{ "envelope", "set envelope", OFFSET(envelope), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS, "envelope"},
{ "e", "set envelope", OFFSET(envelope), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS, "envelope"},
{ "none", 0, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "envelope" },
{ "instant", 0, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "envelope" },
{ "peak", 0, 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "envelope" },
{ "peak+instant", 0, 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, FLAGS, "envelope" },
{ NULL }
};
@ -143,7 +151,9 @@ static int config_input(AVFilterLink *inlink)
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
VectorscopeContext *s = inlink->dst->priv;
if (s->mode == GRAY)
s->is_yuv = !(desc->flags & AV_PIX_FMT_FLAG_RGB);
if (s->mode == GRAY && s->is_yuv)
s->pd = 0;
else {
if ((s->x == 1 && s->y == 2) || (s->x == 2 && s->y == 1))
@ -173,16 +183,75 @@ static int config_input(AVFilterLink *inlink)
static int config_output(AVFilterLink *outlink)
{
VectorscopeContext *s = outlink->src->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(outlink->format);
int depth = desc->comp[0].depth_minus1 + 1;
s->is_yuv = !(desc->flags & AV_PIX_FMT_FLAG_RGB);
outlink->h = outlink->w = 1 << depth;
outlink->sample_aspect_ratio = (AVRational){1,1};
return 0;
}
static void envelope_instant(VectorscopeContext *s, AVFrame *out)
{
const int dlinesize = out->linesize[0];
uint8_t *dpd = s->mode == COLOR || !s->is_yuv ? out->data[s->pd] : out->data[0];
int i, j;
for (i = 0; i < out->height; i++) {
for (j = 0; j < out->width; j++) {
int pos = i * dlinesize + j;
int poa = (i - 1) * dlinesize + j;
int pob = (i + 1) * dlinesize + j;
if (dpd[pos] && (((!j || !dpd[pos - 1]) || ((j == (out->width - 1)) || !dpd[pos + 1]))
|| ((!i || !dpd[poa]) || ((i == (out->height - 1)) || !dpd[pob])))) {
dpd[pos] = 255;
}
}
}
}
static void envelope_peak(VectorscopeContext *s, AVFrame *out)
{
const int dlinesize = out->linesize[0];
uint8_t *dpd = s->mode == COLOR || !s->is_yuv ? out->data[s->pd] : out->data[0];
int i, j;
for (i = 0; i < out->height; i++) {
for (j = 0; j < out->width; j++) {
int pos = i * dlinesize + j;
if (dpd[pos])
s->peak[i][j] = 255;
}
}
if (s->envelope == 3)
envelope_instant(s, out);
for (i = 0; i < out->height; i++) {
for (j = 0; j < out->width; j++) {
int pos = i * dlinesize + j;
if (s->peak[i][j] && (((!j || !s->peak[i][j-1]) || ((j == (out->width - 1)) || !s->peak[i][j + 1]))
|| ((!i || !s->peak[i-1][j]) || ((i == (out->height - 1)) || !s->peak[i + 1][j])))) {
dpd[pos] = 255;
}
}
}
}
static void envelope(VectorscopeContext *s, AVFrame *out)
{
if (!s->envelope) {
return;
} else if (s->envelope == 1) {
envelope_instant(s, out);
} else {
envelope_peak(s, out);
}
}
static void vectorscope(VectorscopeContext *s, AVFrame *in, AVFrame *out, int pd)
{
const uint8_t * const *src = (const uint8_t * const *)in->data;
@ -322,6 +391,8 @@ static void vectorscope(VectorscopeContext *s, AVFrame *in, AVFrame *out, int pd
default:
av_assert0(0);
}
envelope(s, out);
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)