diff options
-rw-r--r-- | doc/eval.texi | 8 | ||||
-rw-r--r-- | libavutil/eval.c | 12 | ||||
-rw-r--r-- | libavutil/version.h | 2 |
3 files changed, 20 insertions, 2 deletions
diff --git a/doc/eval.texi b/doc/eval.texi index 9b98c18cdf..3b7964ce4c 100644 --- a/doc/eval.texi +++ b/doc/eval.texi @@ -124,6 +124,14 @@ Return 1.0 if @var{expr} is zero, 0.0 otherwise. Compute the power of @var{x} elevated @var{y}, it is equivalent to "(@var{x})^(@var{y})". +@item print(t) +@item print(t, l) +Print the value of expression @var{t} with loglevel @var{l}. If +@var{l} is not specified then a default log level is used. +Returns the value of the expression printed. + +Prints t with loglevel l + @item random(x) Return a pseudo random value between 0.0 and 1.0. @var{x} is the index of the internal variable which will be used to save the seed/state. diff --git a/libavutil/eval.c b/libavutil/eval.c index 712d2f2678..f940e9a05b 100644 --- a/libavutil/eval.c +++ b/libavutil/eval.c @@ -144,7 +144,7 @@ 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_if, e_ifnot, e_print, } type; double value; // is sign in other types union { @@ -184,6 +184,12 @@ 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_print: { + double x = eval_expr(p, e->param[0]); + int level = e->param[1] ? av_clip(eval_expr(p, e->param[1]), INT_MIN, INT_MAX) : AV_LOG_INFO; + av_log(p, level, "%f\n", x); + return x; + } case e_random:{ int idx= av_clip(eval_expr(p, e->param[0]), 0, VARS-1); uint64_t r= isnan(p->var[idx]) ? 0 : p->var[idx]; @@ -409,6 +415,7 @@ static int parse_primary(AVExpr **e, Parser *p) else if (strmatch(next, "sqrt" )) d->type = e_sqrt; else if (strmatch(next, "not" )) d->type = e_not; else if (strmatch(next, "pow" )) d->type = e_pow; + else if (strmatch(next, "print" )) d->type = e_print; else if (strmatch(next, "random")) d->type = e_random; else if (strmatch(next, "hypot" )) d->type = e_hypot; else if (strmatch(next, "gcd" )) d->type = e_gcd; @@ -601,6 +608,9 @@ static int verify_expr(AVExpr *e) case e_not: case e_random: return verify_expr(e->param[0]) && !e->param[1]; + case e_print: + return verify_expr(e->param[0]) + && (!e->param[1] || verify_expr(e->param[1])); case e_if: case e_ifnot: case e_taylor: diff --git a/libavutil/version.h b/libavutil/version.h index 3d53261291..3b5c04dabe 100644 --- a/libavutil/version.h +++ b/libavutil/version.h @@ -76,7 +76,7 @@ #define LIBAVUTIL_VERSION_MAJOR 52 #define LIBAVUTIL_VERSION_MINOR 17 -#define LIBAVUTIL_VERSION_MICRO 101 +#define LIBAVUTIL_VERSION_MICRO 102 #define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \ LIBAVUTIL_VERSION_MINOR, \ |