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avfilter/vf_fftfilt: export FFT arrays size

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This commit is contained in:
Paul B Mahol 2021-10-14 20:22:20 +02:00
parent e1b820fa33
commit 890cef1ff6
2 changed files with 8 additions and 2 deletions
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4
doc/filters.texi
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@ -11963,6 +11963,10 @@ The width and height of the image.
@item N
The number of input frame, starting from 0.
@item WS
@item HS
The size of FFT array for horizontal and vertical processing.
@end table
@subsection Examples

6
libavfilter/vf_fftfilt.c
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@ -71,8 +71,8 @@ typedef struct FFTFILTContext {
int (*irdft_horizontal)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
} FFTFILTContext;
static const char *const var_names[] = { "X", "Y", "W", "H", "N", NULL };
enum { VAR_X, VAR_Y, VAR_W, VAR_H, VAR_N, VAR_VARS_NB };
static const char *const var_names[] = { "X", "Y", "W", "H", "N", "WS", "HS", NULL };
enum { VAR_X, VAR_Y, VAR_W, VAR_H, VAR_N, VAR_WS, VAR_HS, VAR_VARS_NB };
enum { Y = 0, U, V };
@ -268,6 +268,8 @@ static void do_eval(FFTFILTContext *s, AVFilterLink *inlink, int plane)
values[VAR_N] = inlink->frame_count_out;
values[VAR_W] = s->planewidth[plane];
values[VAR_H] = s->planeheight[plane];
values[VAR_WS] = s->rdft_hlen[plane];
values[VAR_HS] = s->rdft_vlen[plane];
for (i = 0; i < s->rdft_hlen[plane]; i++) {
values[VAR_X] = i;