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avfilter/avf_showspectrum: add terrain color map

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pull/300/head
Paul B Mahol 6 years ago
parent 09fdfc11b7
commit 70463b7026
2 changed files with 14 additions and 1 deletions
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  1. 4
      doc/filters.texi
  2. 11
      libavfilter/avf_showspectrum.c

4
doc/filters.texi
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@ -21724,6 +21724,8 @@ each channel is displayed using the viridis color scheme
each channel is displayed using the plasma color scheme
@item cividis
each channel is displayed using the cividis color scheme
@item terrain
each channel is displayed using the terrain color scheme
@end table
Default value is @samp{channel}.
@ -21896,6 +21898,8 @@ each channel is displayed using the viridis color scheme
each channel is displayed using the plasma color scheme
@item cividis
each channel is displayed using the cividis color scheme
@item terrain
each channel is displayed using the terrain color scheme
@end table
Default value is @samp{intensity}.

11
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, PLASMA, CIVIDIS, NB_CLMODES };
enum ColorMode { CHANNEL, INTENSITY, RAINBOW, MORELAND, NEBULAE, FIRE, FIERY, FRUIT, COOL, MAGMA, GREEN, VIRIDIS, PLASMA, CIVIDIS, TERRAIN, NB_CLMODES };
enum SlideMode { REPLACE, SCROLL, FULLFRAME, RSCROLL, NB_SLIDES };
enum Orientation { VERTICAL, HORIZONTAL, NB_ORIENTATIONS };
@ -126,6 +126,7 @@ static const AVOption showspectrum_options[] = {
{ "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" },
{ "cividis", "cividis based coloring", 0, AV_OPT_TYPE_CONST, {.i64=CIVIDIS}, 0, 0, FLAGS, "color" },
{ "terrain", "terrain based coloring", 0, AV_OPT_TYPE_CONST, {.i64=TERRAIN}, 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" },
@ -282,6 +283,12 @@ static const struct ColorTable {
{ 0.76, 0x89/255., (0x75 -128)/255., (0x84 -128)/255. },
{ 0.90, 0xCE/255., (0x35 -128)/255., (0x95 -128)/255. },
{ 1, 1, 0, 0. }},
[TERRAIN] = {
{ 0, 0, 0, 0 },
{ 0.15, 0, .5, 0 },
{ 0.60, 1, -.5, -.5 },
{ 0.85, 1, -.5, .5 },
{ 1, 1, 0, 0 }},
};
static av_cold void uninit(AVFilterContext *ctx)
@ -514,6 +521,7 @@ static void color_range(ShowSpectrumContext *s, int ch,
case VIRIDIS:
case PLASMA:
case CIVIDIS:
case TERRAIN:
case MAGMA:
case INTENSITY:
*uf = *yf;
@ -1431,6 +1439,7 @@ static const AVOption showspectrumpic_options[] = {
{ "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" },
{ "cividis", "cividis based coloring", 0, AV_OPT_TYPE_CONST, {.i64=CIVIDIS}, 0, 0, FLAGS, "color" },
{ "terrain", "terrain based coloring", 0, AV_OPT_TYPE_CONST, {.i64=TERRAIN}, 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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