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avfilter/avf_showspectrum: add plasma color map

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pull/300/head
Paul B Mahol 6 years ago
parent ed58db4237
commit 0c6d4e7ba4
2 changed files with 16 additions and 1 deletions
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  1. 4
      doc/filters.texi
  2. 13
      libavfilter/avf_showspectrum.c

4
doc/filters.texi
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@ -21717,6 +21717,8 @@ each channel is displayed using the magma color scheme
each channel is displayed using the green color scheme
@item viridis
each channel is displayed using the viridis color scheme
@item plasma
each channel is displayed using the plasma color scheme
@end table
Default value is @samp{channel}.
@ -21885,6 +21887,8 @@ each channel is displayed using the magma color scheme
each channel is displayed using the green color scheme
@item viridis
each channel is displayed using the viridis color scheme
@item plasma
each channel is displayed using the plasma color scheme
@end table
Default value is @samp{intensity}.

13
libavfilter/avf_showspectrum.c
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@ -46,7 +46,7 @@
enum DisplayMode { COMBINED, SEPARATE, NB_MODES };
enum DataMode { D_MAGNITUDE, D_PHASE, NB_DMODES };
enum DisplayScale { LINEAR, SQRT, CBRT, LOG, FOURTHRT, FIFTHRT, NB_SCALES };
enum ColorMode { CHANNEL, INTENSITY, RAINBOW, MORELAND, NEBULAE, FIRE, FIERY, FRUIT, COOL, MAGMA, GREEN, VIRIDIS, NB_CLMODES };
enum ColorMode { CHANNEL, INTENSITY, RAINBOW, MORELAND, NEBULAE, FIRE, FIERY, FRUIT, COOL, MAGMA, GREEN, VIRIDIS, PLASMA, NB_CLMODES };
enum SlideMode { REPLACE, SCROLL, FULLFRAME, RSCROLL, NB_SLIDES };
enum Orientation { VERTICAL, HORIZONTAL, NB_ORIENTATIONS };
@ -124,6 +124,7 @@ static const AVOption showspectrum_options[] = {
{ "magma", "magma based coloring", 0, AV_OPT_TYPE_CONST, {.i64=MAGMA}, 0, 0, FLAGS, "color" },
{ "green", "green based coloring", 0, AV_OPT_TYPE_CONST, {.i64=GREEN}, 0, 0, FLAGS, "color" },
{ "viridis", "viridis based coloring", 0, AV_OPT_TYPE_CONST, {.i64=VIRIDIS}, 0, 0, FLAGS, "color" },
{ "plasma", "plasma based coloring", 0, AV_OPT_TYPE_CONST, {.i64=PLASMA}, 0, 0, FLAGS, "color" },
{ "scale", "set display scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64=SQRT}, LINEAR, NB_SCALES-1, FLAGS, "scale" },
{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=LINEAR}, 0, 0, FLAGS, "scale" },
{ "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SQRT}, 0, 0, FLAGS, "scale" },
@ -264,6 +265,14 @@ static const struct ColorTable {
{ 0.64, 0x8A/255., (0x72 -128)/255., (0x4F -128)/255. },
{ 0.80, 0xA3/255., (0x50 -128)/255., (0x66 -128)/255. },
{ 1, 0xCC/255., (0x2F -128)/255., (0x87 -128)/255. }},
[PLASMA] = {
{ 0, 0, 0, 0 },
{ 0.10, 0x27/255., (0xC2 -128)/255., (0x82 -128)/255. },
{ 0.58, 0x5B/255., (0x9A -128)/255., (0xAE -128)/255. },
{ 0.70, 0x89/255., (0x44 -128)/255., (0xAB -128)/255. },
{ 0.80, 0xB4/255., (0x2B -128)/255., (0x9E -128)/255. },
{ 0.91, 0xD2/255., (0x38 -128)/255., (0x92 -128)/255. },
{ 1, 1, 0, 0. }},
};
static av_cold void uninit(AVFilterContext *ctx)
@ -494,6 +503,7 @@ static void color_range(ShowSpectrumContext *s, int ch,
case COOL:
case GREEN:
case VIRIDIS:
case PLASMA:
case MAGMA:
case INTENSITY:
*uf = *yf;
@ -1409,6 +1419,7 @@ static const AVOption showspectrumpic_options[] = {
{ "magma", "magma based coloring", 0, AV_OPT_TYPE_CONST, {.i64=MAGMA}, 0, 0, FLAGS, "color" },
{ "green", "green based coloring", 0, AV_OPT_TYPE_CONST, {.i64=GREEN}, 0, 0, FLAGS, "color" },
{ "viridis", "viridis based coloring", 0, AV_OPT_TYPE_CONST, {.i64=VIRIDIS}, 0, 0, FLAGS, "color" },
{ "plasma", "plasma based coloring", 0, AV_OPT_TYPE_CONST, {.i64=PLASMA}, 0, 0, FLAGS, "color" },
{ "scale", "set display scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64=LOG}, 0, NB_SCALES-1, FLAGS, "scale" },
{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=LINEAR}, 0, 0, FLAGS, "scale" },
{ "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SQRT}, 0, 0, FLAGS, "scale" },

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