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avfilter/avf_showspectrum: add nebulae color map

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2015-12-30 21:20:16 +01:00
parent dde994751b
commit 0f387f2b62
2 changed files with 14 additions and 1 deletions
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2
doc/filters.texi
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@ -14619,6 +14619,8 @@ each channel is displayed using the same color scheme
each channel is displayed using the rainbow color scheme
@item moreland
each channel is displayed using the moreland color scheme
@item nebulae
each channel is displayed using the nebulae color scheme
@end table
Default value is @samp{channel}.

13
libavfilter/avf_showspectrum.c
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@ -37,7 +37,7 @@
enum DisplayMode { COMBINED, SEPARATE, NB_MODES };
enum DisplayScale { LINEAR, SQRT, CBRT, LOG, NB_SCALES };
enum ColorMode { CHANNEL, INTENSITY, RAINBOW, MORELAND, NB_CLMODES };
enum ColorMode { CHANNEL, INTENSITY, RAINBOW, MORELAND, NEBULAE, NB_CLMODES };
enum SlideMode { REPLACE, SCROLL, FULLFRAME, RSCROLL, NB_SLIDES };
enum Orientation { VERTICAL, HORIZONTAL, NB_ORIENTATIONS };
@ -84,6 +84,7 @@ static const AVOption showspectrum_options[] = {
{ "intensity", "intensity based coloring", 0, AV_OPT_TYPE_CONST, {.i64=INTENSITY}, 0, 0, FLAGS, "color" },
{ "rainbow", "rainbow based coloring", 0, AV_OPT_TYPE_CONST, {.i64=RAINBOW}, 0, 0, FLAGS, "color" },
{ "moreland", "moreland based coloring", 0, AV_OPT_TYPE_CONST, {.i64=MORELAND}, 0, 0, FLAGS, "color" },
{ "nebulae", "nebulae based coloring", 0, AV_OPT_TYPE_CONST, {.i64=NEBULAE}, 0, 0, FLAGS, "color" },
{ "scale", "set display scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64=SQRT}, LINEAR, NB_SCALES-1, FLAGS, "scale" },
{ "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SQRT}, 0, 0, FLAGS, "scale" },
{ "cbrt", "cubic root", 0, AV_OPT_TYPE_CONST, {.i64=CBRT}, 0, 0, FLAGS, "scale" },
@ -144,6 +145,15 @@ static const struct ColorTable {
{ 0.73, 177/256., (103-128)/256., (165-128)/256. },
{ 0.86, 136/256., (100-128)/256., (183-128)/256. },
{ 1, 68/256., (117-128)/256., (203-128)/256. }},
[NEBULAE] = {
{ 0, 10/256., (134-128)/256., (132-128)/256. },
{ 0.23, 21/256., (137-128)/256., (130-128)/256. },
{ 0.45, 35/256., (134-128)/256., (134-128)/256. },
{ 0.57, 51/256., (130-128)/256., (139-128)/256. },
{ 0.67, 104/256., (116-128)/256., (162-128)/256. },
{ 0.77, 120/256., (105-128)/256., (188-128)/256. },
{ 0.87, 140/256., (105-128)/256., (188-128)/256. },
{ 1, 1, 0, 0 }},
};
static av_cold void uninit(AVFilterContext *ctx)
@ -392,6 +402,7 @@ static int plot_spectrum_column(AVFilterLink *inlink, AVFrame *insamples)
switch (s->color_mode) {
case RAINBOW:
case MORELAND:
case NEBULAE:
case INTENSITY:
uf = yf;
vf = yf;