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avfilter/avf_showcwt: add yet another mode variant

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This commit is contained in:
Paul B Mahol 2022-11-30 19:55:17 +01:00
parent 7d20635aeb
commit 569b1a24cd
2 changed files with 27 additions and 1 deletions
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2
doc/filters.texi
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@ -29343,6 +29343,8 @@ Show combination of magnitude and phase.
Magnitude is mapped to brightness and phase to color.
@item channel
Show unique color per channel magnitude.
@item stereo
Show unique color per stereo difference.
@end table
Default value is @code{magnitude}.

26
libavfilter/avf_showcwt.c
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@ -132,11 +132,12 @@ static const AVOption showcwt_options[] = {
{ "logb", "set logarithmic basis", OFFSET(logarithmic_basis), AV_OPT_TYPE_FLOAT, {.dbl = 0.0001}, 0, 1, FLAGS },
{ "deviation", "set frequency deviation", OFFSET(deviation), AV_OPT_TYPE_FLOAT, {.dbl = 1.}, 0, 10, FLAGS },
{ "pps", "set pixels per second", OFFSET(pps), AV_OPT_TYPE_INT, {.i64 = 64}, 1, 1024, FLAGS },
{ "mode", "set output mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS, "mode" },
{ "mode", "set output mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 4, FLAGS, "mode" },
{ "magnitude", "magnitude", 0, AV_OPT_TYPE_CONST,{.i64=0}, 0, 0, FLAGS, "mode" },
{ "phase", "phase", 0, AV_OPT_TYPE_CONST,{.i64=1}, 0, 0, FLAGS, "mode" },
{ "magphase", "magnitude+phase", 0, AV_OPT_TYPE_CONST,{.i64=2}, 0, 0, FLAGS, "mode" },
{ "channel", "color per channel", 0, AV_OPT_TYPE_CONST,{.i64=3}, 0, 0, FLAGS, "mode" },
{ "stereo", "stereo difference", 0, AV_OPT_TYPE_CONST,{.i64=4}, 0, 0, FLAGS, "mode" },
{ "slide", "set slide mode", OFFSET(slide), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_SLIDE-1, FLAGS, "slide" },
{ "replace", "replace", 0, AV_OPT_TYPE_CONST,{.i64=SLIDE_REPLACE},0, 0, FLAGS, "slide" },
{ "scroll", "scroll", 0, AV_OPT_TYPE_CONST,{.i64=SLIDE_SCROLL}, 0, 0, FLAGS, "slide" },
@ -360,6 +361,29 @@ static int draw(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
}
switch (mode) {
case 4:
{
const AVComplexFloat *src2 = ((const AVComplexFloat *)s->ch_out->extended_data[FFMAX(1, s->nb_channels - 1)]) +
y * ihop_size + ihop_index;
float z, u, v;
z = hypotf(src[0].re + src2[0].re, src[0].im + src2[0].im);
u = hypotf(src[0].re, src[0].im);
v = hypotf(src2[0].re, src2[0].im);
z = remap_log(z, log_factor);
u = remap_log(u, log_factor);
v = remap_log(v, log_factor);
Y = z;
U = 0.5f + z * sinf((v - u) * M_PI_2);
V = 0.5f + z * sinf((u - v) * M_PI_2);
dstY[0] = av_clip_uint8(lrintf(Y * 255.f));
dstU[0] = av_clip_uint8(lrintf(U * 255.f));
dstV[0] = av_clip_uint8(lrintf(V * 255.f));
}
break;
case 3:
{
const int nb_channels = s->nb_channels;