RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

avfitler/af_asoftclip: add hard type

This commit is contained in:
Paul B Mahol 2020-11-03 12:21:48 +01:00
parent ee686236cd
commit de63b6fb54
2 changed files with 14 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
doc/filters.texi
View File

@ -2316,6 +2316,7 @@ Set type of soft-clipping.
It accepts the following values:
@table @option
@item hard
@item tanh
@item atan
@item cubic

14
libavfilter/af_asoftclip.c
View File

@ -25,6 +25,7 @@
#include "formats.h"
enum ASoftClipTypes {
ASC_HARD = -1,
ASC_TANH,
ASC_ATAN,
ASC_CUBIC,
@ -50,7 +51,8 @@ typedef struct ASoftClipContext {
#define A AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
static const AVOption asoftclip_options[] = {
{ "type", "set softclip type", OFFSET(type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TYPES-1, A, "types" },
{ "type", "set softclip type", OFFSET(type), AV_OPT_TYPE_INT, {.i64=0}, -1, NB_TYPES-1, A, "types" },
{ "hard", NULL, 0, AV_OPT_TYPE_CONST, {.i64=ASC_HARD}, 0, 0, A, "types" },
{ "tanh", NULL, 0, AV_OPT_TYPE_CONST, {.i64=ASC_TANH}, 0, 0, A, "types" },
{ "atan", NULL, 0, AV_OPT_TYPE_CONST, {.i64=ASC_ATAN}, 0, 0, A, "types" },
{ "cubic", NULL, 0, AV_OPT_TYPE_CONST, {.i64=ASC_CUBIC}, 0, 0, A, "types" },
@ -109,6 +111,11 @@ static void filter_flt(ASoftClipContext *s,
float *dst = dptr[c];
switch (s->type) {
case ASC_HARD:
for (int n = 0; n < nb_samples; n++) {
dst[n] = av_clipf(src[n], -1.f, 1.f);
}
break;
case ASC_TANH:
for (int n = 0; n < nb_samples; n++) {
dst[n] = tanhf(src[n] * param);
@ -171,6 +178,11 @@ static void filter_dbl(ASoftClipContext *s,
double *dst = dptr[c];
switch (s->type) {
case ASC_HARD:
for (int n = 0; n < nb_samples; n++) {
dst[n] = av_clipd(src[n], -1., 1.);
}
break;
case ASC_TANH:
for (int n = 0; n < nb_samples; n++) {
dst[n] = tanh(src[n] * param);