diff --git a/doc/utils.texi b/doc/utils.texi index c46ad4523b6109afda8d1449534f317ec2bc6f4e..b0455af00ce08684448bc17d40837a651198d4df 100644 --- a/doc/utils.texi +++ b/doc/utils.texi @@ -782,6 +782,9 @@ large numbers (usually 2^53 and larger). Round the value of expression @var{expr} upwards to the nearest integer. For example, "ceil(1.5)" is "2.0". +@item clip(x, min, max) +Return the value of @var{x} clipped between @var{min} and @var{max}. + @item cos(x) Compute cosine of @var{x}. diff --git a/libavutil/eval.c b/libavutil/eval.c index 4a313bfad4d9fda30122eca5f845302488fbc0d2..67b0a5f8cd05dc0ef5ed419456bf65f514eda6b9 100644 --- a/libavutil/eval.c +++ b/libavutil/eval.c @@ -147,7 +147,7 @@ struct AVExpr { e_pow, e_mul, e_div, e_add, e_last, e_st, e_while, e_taylor, e_root, e_floor, e_ceil, e_trunc, e_sqrt, e_not, e_random, e_hypot, e_gcd, - e_if, e_ifnot, e_print, e_bitand, e_bitor, e_between, + e_if, e_ifnot, e_print, e_bitand, e_bitor, e_between, e_clip } type; double value; // is sign in other types union { @@ -187,6 +187,13 @@ static double eval_expr(Parser *p, AVExpr *e) e->param[2] ? eval_expr(p, e->param[2]) : 0); case e_ifnot: return e->value * (!eval_expr(p, e->param[0]) ? eval_expr(p, e->param[1]) : e->param[2] ? eval_expr(p, e->param[2]) : 0); + case e_clip: { + double x = eval_expr(p, e->param[0]); + double min = eval_expr(p, e->param[1]), max = eval_expr(p, e->param[2]); + if (isnan(min) || isnan(max) || isnan(x) || min > max) + return NAN; + return e->value * av_clipd(eval_expr(p, e->param[0]), min, max); + } case e_between: { double d = eval_expr(p, e->param[0]); return e->value * (d >= eval_expr(p, e->param[1]) && @@ -436,6 +443,7 @@ static int parse_primary(AVExpr **e, Parser *p) else if (strmatch(next, "bitand")) d->type = e_bitand; else if (strmatch(next, "bitor" )) d->type = e_bitor; else if (strmatch(next, "between"))d->type = e_between; + else if (strmatch(next, "clip" )) d->type = e_clip; else { for (i=0; p->func1_names && p->func1_names[i]; i++) { if (strmatch(next, p->func1_names[i])) { @@ -632,6 +640,7 @@ static int verify_expr(AVExpr *e) return verify_expr(e->param[0]) && verify_expr(e->param[1]) && (!e->param[2] || verify_expr(e->param[2])); case e_between: + case e_clip: return verify_expr(e->param[0]) && verify_expr(e->param[1]) && verify_expr(e->param[2]); @@ -831,6 +840,9 @@ int main(int argc, char **argv) "between(10, -3, 10)", "between(-4, -2, -1)", "between(1,2)", + "clip(0, 2, 1)", + "clip(0/0, 1, 2)", + "clip(0, 0/0, 1)", NULL }; diff --git a/libavutil/version.h b/libavutil/version.h index 0d254b1a851c6b9e7649935df0ec31c830ac8f2f..6d8d6f0ced9620846d5bd73287ed9483943b5841 100644 --- a/libavutil/version.h +++ b/libavutil/version.h @@ -57,7 +57,7 @@ #define LIBAVUTIL_VERSION_MAJOR 52 #define LIBAVUTIL_VERSION_MINOR 92 -#define LIBAVUTIL_VERSION_MICRO 100 +#define LIBAVUTIL_VERSION_MICRO 101 #define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \ LIBAVUTIL_VERSION_MINOR, \ diff --git a/tests/ref/fate/eval b/tests/ref/fate/eval index 97e0b20dd3cdf92a4152ca387d7c02b0086c8612..914b13ccfa1d118d312b3401c97aa3307a44909d 100644 --- a/tests/ref/fate/eval +++ b/tests/ref/fate/eval @@ -268,5 +268,14 @@ Evaluating 'between(-4, -2, -1)' Evaluating 'between(1,2)' 'between(1,2)' -> nan +Evaluating 'clip(0, 2, 1)' +'clip(0, 2, 1)' -> nan + +Evaluating 'clip(0/0, 1, 2)' +'clip(0/0, 1, 2)' -> nan + +Evaluating 'clip(0, 0/0, 1)' +'clip(0, 0/0, 1)' -> nan + 12.700000 == 12.7 0.931323 == 0.931322575