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avfilter/avf_showspectrum: add lreplace sliding mode

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This commit is contained in:
Paul B Mahol 2021-08-04 22:42:44 +02:00
parent b1388cd6c5
commit 82123e133d
2 changed files with 25 additions and 6 deletions
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2
doc/filters.texi
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@ -26749,6 +26749,8 @@ the samples scroll from right to left
frames are only produced when the samples reach the right
@item rscroll
the samples scroll from left to right
@item lreplace
the samples start again on the right when they reach the left
@end table
Default value is @code{replace}.

29
libavfilter/avf_showspectrum.c
View File

@ -49,7 +49,7 @@ enum DataMode { D_MAGNITUDE, D_PHASE, NB_DMODES };
enum FrequencyScale { F_LINEAR, F_LOG, NB_FSCALES };
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, TERRAIN, NB_CLMODES };
enum SlideMode { REPLACE, SCROLL, FULLFRAME, RSCROLL, NB_SLIDES };
enum SlideMode { REPLACE, SCROLL, FULLFRAME, RSCROLL, LREPLACE, NB_SLIDES };
enum Orientation { VERTICAL, HORIZONTAL, NB_ORIENTATIONS };
typedef struct ShowSpectrumContext {
@ -115,6 +115,7 @@ static const AVOption showspectrum_options[] = {
{ "scroll", "scroll from right to left", 0, AV_OPT_TYPE_CONST, {.i64=SCROLL}, 0, 0, FLAGS, "slide" },
{ "fullframe", "return full frames", 0, AV_OPT_TYPE_CONST, {.i64=FULLFRAME}, 0, 0, FLAGS, "slide" },
{ "rscroll", "scroll from left to right", 0, AV_OPT_TYPE_CONST, {.i64=RSCROLL}, 0, 0, FLAGS, "slide" },
{ "lreplace", "replace from right to left", 0, AV_OPT_TYPE_CONST, {.i64=LREPLACE}, 0, 0, FLAGS, "slide" },
{ "mode", "set channel display mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=COMBINED}, COMBINED, NB_MODES-1, FLAGS, "mode" },
{ "combined", "combined mode", 0, AV_OPT_TYPE_CONST, {.i64=COMBINED}, 0, 0, FLAGS, "mode" },
{ "separate", "separate mode", 0, AV_OPT_TYPE_CONST, {.i64=SEPARATE}, 0, 0, FLAGS, "mode" },
@ -1187,6 +1188,13 @@ static int config_output(AVFilterLink *outlink)
(s->orientation == HORIZONTAL && s->xpos >= s->h))
s->xpos = 0;
if (s->sliding == LREPLACE) {
if (s->orientation == VERTICAL)
s->xpos = s->w - 1;
if (s->orientation == HORIZONTAL)
s->xpos = s->h - 1;
}
s->auto_frame_rate = av_make_q(inlink->sample_rate, s->hop_size);
if (s->orientation == VERTICAL && s->sliding == FULLFRAME)
s->auto_frame_rate = av_mul_q(s->auto_frame_rate, av_make_q(1, s->w));
@ -1377,11 +1385,20 @@ static int plot_spectrum_column(AVFilterLink *inlink, AVFrame *insamples)
if (s->sliding != FULLFRAME || s->xpos == 0)
outpicref->pts = av_rescale_q(insamples->pts, inlink->time_base, outlink->time_base);
s->xpos++;
if (s->orientation == VERTICAL && s->xpos >= s->w)
s->xpos = 0;
if (s->orientation == HORIZONTAL && s->xpos >= s->h)
s->xpos = 0;
if (s->sliding == LREPLACE) {
s->xpos--;
if (s->orientation == VERTICAL && s->xpos < 0)
s->xpos = s->w - 1;
if (s->orientation == HORIZONTAL && s->xpos < 0)
s->xpos = s->h - 1;
} else {
s->xpos++;
if (s->orientation == VERTICAL && s->xpos >= s->w)
s->xpos = 0;
if (s->orientation == HORIZONTAL && s->xpos >= s->h)
s->xpos = 0;
}
if (!s->single_pic && (s->sliding != FULLFRAME || s->xpos == 0)) {
if (s->old_pts < outpicref->pts) {
AVFrame *clone;