Add m-esr52 at 52.6.0

1 files changed, 691 insertions, 0 deletions

diff --git a/media/libav/libavutil/eval.c b/media/libav/libavutil/eval.c
new file mode 100644
index 000000000..31e9ebbc9
--- /dev/null
+++ b/media/libav/libavutil/eval.c
@@ -0,0 +1,691 @@
+/*
+ * Copyright (c) 2002-2006 Michael Niedermayer <michaelni@gmx.at>
+ * Copyright (c) 2006 Oded Shimon <ods15@ods15.dyndns.org>
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * simple arithmetic expression evaluator.
+ *
+ * see http://joe.hotchkiss.com/programming/eval/eval.html
+ */
+
+#include "attributes.h"
+#include "avutil.h"
+#include "common.h"
+#include "eval.h"
+#include "log.h"
+#include "mathematics.h"
+#include "avstring.h"
+#include "timer.h"
+
+typedef struct Parser {
+    const AVClass *class;
+    int stack_index;
+    char *s;
+    const double *const_values;
+    const char * const *const_names;          // NULL terminated
+    double (* const *funcs1)(void *, double a);           // NULL terminated
+    const char * const *func1_names;          // NULL terminated
+    double (* const *funcs2)(void *, double a, double b); // NULL terminated
+    const char * const *func2_names;          // NULL terminated
+    void *opaque;
+    int log_offset;
+    void *log_ctx;
+#define VARS 10
+    double var[VARS];
+} Parser;
+
+static const AVClass class = { "Eval", av_default_item_name, NULL, LIBAVUTIL_VERSION_INT, offsetof(Parser,log_offset), offsetof(Parser,log_ctx) };
+
+static const int8_t si_prefixes['z' - 'E' + 1] = {
+    ['y'-'E']= -24,
+    ['z'-'E']= -21,
+    ['a'-'E']= -18,
+    ['f'-'E']= -15,
+    ['p'-'E']= -12,
+    ['n'-'E']= - 9,
+    ['u'-'E']= - 6,
+    ['m'-'E']= - 3,
+    ['c'-'E']= - 2,
+    ['d'-'E']= - 1,
+    ['h'-'E']=   2,
+    ['k'-'E']=   3,
+    ['K'-'E']=   3,
+    ['M'-'E']=   6,
+    ['G'-'E']=   9,
+    ['T'-'E']=  12,
+    ['P'-'E']=  15,
+    ['E'-'E']=  18,
+    ['Z'-'E']=  21,
+    ['Y'-'E']=  24,
+};
+
+double av_strtod(const char *numstr, char **tail)
+{
+    double d;
+    char *next;
+    d = strtod(numstr, &next);
+    /* if parsing succeeded, check for and interpret postfixes */
+    if (next!=numstr) {
+        if (next[0] == 'd' && next[1] == 'B') {
+            /* treat dB as decibels instead of decibytes */
+            d = pow(10, d / 20);
+            next += 2;
+        } else if (*next >= 'E' && *next <= 'z') {
+            int e= si_prefixes[*next - 'E'];
+            if (e) {
+                if (next[1] == 'i') {
+                    d*= pow( 2, e/0.3);
+                    next+=2;
+                } else {
+                    d*= pow(10, e);
+                    next++;
+                }
+            }
+        }
+
+        if (*next=='B') {
+            d*=8;
+            next++;
+        }
+    }
+    /* if requested, fill in tail with the position after the last parsed
+       character */
+    if (tail)
+        *tail = next;
+    return d;
+}
+
+#define IS_IDENTIFIER_CHAR(c) ((c) - '0' <= 9U || (c) - 'a' <= 25U || (c) - 'A' <= 25U || (c) == '_')
+
+static int strmatch(const char *s, const char *prefix)
+{
+    int i;
+    for (i=0; prefix[i]; i++) {
+        if (prefix[i] != s[i]) return 0;
+    }
+    /* return 1 only if the s identifier is terminated */
+    return !IS_IDENTIFIER_CHAR(s[i]);
+}
+
+struct AVExpr {
+    enum {
+        e_value, e_const, e_func0, e_func1, e_func2,
+        e_squish, e_gauss, e_ld, e_isnan, e_isinf,
+        e_mod, e_max, e_min, e_eq, e_gt, e_gte,
+        e_pow, e_mul, e_div, e_add,
+        e_last, e_st, e_while, e_floor, e_ceil, e_trunc,
+        e_sqrt, e_not,
+    } type;
+    double value; // is sign in other types
+    union {
+        int const_index;
+        double (*func0)(double);
+        double (*func1)(void *, double);
+        double (*func2)(void *, double, double);
+    } a;
+    struct AVExpr *param[2];
+};
+
+static double eval_expr(Parser *p, AVExpr *e)
+{
+    switch (e->type) {
+        case e_value:  return e->value;
+        case e_const:  return e->value * p->const_values[e->a.const_index];
+        case e_func0:  return e->value * e->a.func0(eval_expr(p, e->param[0]));
+        case e_func1:  return e->value * e->a.func1(p->opaque, eval_expr(p, e->param[0]));
+        case e_func2:  return e->value * e->a.func2(p->opaque, eval_expr(p, e->param[0]), eval_expr(p, e->param[1]));
+        case e_squish: return 1/(1+exp(4*eval_expr(p, e->param[0])));
+        case e_gauss: { double d = eval_expr(p, e->param[0]); return exp(-d*d/2)/sqrt(2*M_PI); }
+        case e_ld:     return e->value * p->var[av_clip(eval_expr(p, e->param[0]), 0, VARS-1)];
+        case e_isnan:  return e->value * !!isnan(eval_expr(p, e->param[0]));
+        case e_isinf:  return e->value * !!isinf(eval_expr(p, e->param[0]));
+        case e_floor:  return e->value * floor(eval_expr(p, e->param[0]));
+        case e_ceil :  return e->value * ceil (eval_expr(p, e->param[0]));
+        case e_trunc:  return e->value * trunc(eval_expr(p, e->param[0]));
+        case e_sqrt:   return e->value * sqrt (eval_expr(p, e->param[0]));
+        case e_not:    return e->value * eval_expr(p, e->param[0]) == 0;
+        case e_while: {
+            double d = NAN;
+            while (eval_expr(p, e->param[0]))
+                d=eval_expr(p, e->param[1]);
+            return d;
+        }
+        default: {
+            double d = eval_expr(p, e->param[0]);
+            double d2 = eval_expr(p, e->param[1]);
+            switch (e->type) {
+                case e_mod: return e->value * (d - floor(d/d2)*d2);
+                case e_max: return e->value * (d >  d2 ?   d : d2);
+                case e_min: return e->value * (d <  d2 ?   d : d2);
+                case e_eq:  return e->value * (d == d2 ? 1.0 : 0.0);
+                case e_gt:  return e->value * (d >  d2 ? 1.0 : 0.0);
+                case e_gte: return e->value * (d >= d2 ? 1.0 : 0.0);
+                case e_pow: return e->value * pow(d, d2);
+                case e_mul: return e->value * (d * d2);
+                case e_div: return e->value * (d / d2);
+                case e_add: return e->value * (d + d2);
+                case e_last:return e->value * d2;
+                case e_st : return e->value * (p->var[av_clip(d, 0, VARS-1)]= d2);
+            }
+        }
+    }
+    return NAN;
+}
+
+static int parse_expr(AVExpr **e, Parser *p);
+
+void av_expr_free(AVExpr *e)
+{
+    if (!e) return;
+    av_expr_free(e->param[0]);
+    av_expr_free(e->param[1]);
+    av_freep(&e);
+}
+
+static int parse_primary(AVExpr **e, Parser *p)
+{
+    AVExpr *d = av_mallocz(sizeof(AVExpr));
+    char *next = p->s, *s0 = p->s;
+    int ret, i;
+
+    if (!d)
+        return AVERROR(ENOMEM);
+
+    /* number */
+    d->value = av_strtod(p->s, &next);
+    if (next != p->s) {
+        d->type = e_value;
+        p->s= next;
+        *e = d;
+        return 0;
+    }
+    d->value = 1;
+
+    /* named constants */
+    for (i=0; p->const_names && p->const_names[i]; i++) {
+        if (strmatch(p->s, p->const_names[i])) {
+            p->s+= strlen(p->const_names[i]);
+            d->type = e_const;
+            d->a.const_index = i;
+            *e = d;
+            return 0;
+        }
+    }
+
+    p->s= strchr(p->s, '(');
+    if (!p->s) {
+        av_log(p, AV_LOG_ERROR, "Undefined constant or missing '(' in '%s'\n", s0);
+        p->s= next;
+        av_expr_free(d);
+        return AVERROR(EINVAL);
+    }
+    p->s++; // "("
+    if (*next == '(') { // special case do-nothing
+        av_freep(&d);
+        if ((ret = parse_expr(&d, p)) < 0)
+            return ret;
+        if (p->s[0] != ')') {
+            av_log(p, AV_LOG_ERROR, "Missing ')' in '%s'\n", s0);
+            av_expr_free(d);
+            return AVERROR(EINVAL);
+        }
+        p->s++; // ")"
+        *e = d;
+        return 0;
+    }
+    if ((ret = parse_expr(&(d->param[0]), p)) < 0) {
+        av_expr_free(d);
+        return ret;
+    }
+    if (p->s[0]== ',') {
+        p->s++; // ","
+        parse_expr(&d->param[1], p);
+    }
+    if (p->s[0] != ')') {
+        av_log(p, AV_LOG_ERROR, "Missing ')' or too many args in '%s'\n", s0);
+        av_expr_free(d);
+        return AVERROR(EINVAL);
+    }
+    p->s++; // ")"
+
+    d->type = e_func0;
+         if (strmatch(next, "sinh"  )) d->a.func0 = sinh;
+    else if (strmatch(next, "cosh"  )) d->a.func0 = cosh;
+    else if (strmatch(next, "tanh"  )) d->a.func0 = tanh;
+    else if (strmatch(next, "sin"   )) d->a.func0 = sin;
+    else if (strmatch(next, "cos"   )) d->a.func0 = cos;
+    else if (strmatch(next, "tan"   )) d->a.func0 = tan;
+    else if (strmatch(next, "atan"  )) d->a.func0 = atan;
+    else if (strmatch(next, "asin"  )) d->a.func0 = asin;
+    else if (strmatch(next, "acos"  )) d->a.func0 = acos;
+    else if (strmatch(next, "exp"   )) d->a.func0 = exp;
+    else if (strmatch(next, "log"   )) d->a.func0 = log;
+    else if (strmatch(next, "abs"   )) d->a.func0 = fabs;
+    else if (strmatch(next, "squish")) d->type = e_squish;
+    else if (strmatch(next, "gauss" )) d->type = e_gauss;
+    else if (strmatch(next, "mod"   )) d->type = e_mod;
+    else if (strmatch(next, "max"   )) d->type = e_max;
+    else if (strmatch(next, "min"   )) d->type = e_min;
+    else if (strmatch(next, "eq"    )) d->type = e_eq;
+    else if (strmatch(next, "gte"   )) d->type = e_gte;
+    else if (strmatch(next, "gt"    )) d->type = e_gt;
+    else if (strmatch(next, "lte"   )) { AVExpr *tmp = d->param[1]; d->param[1] = d->param[0]; d->param[0] = tmp; d->type = e_gte; }
+    else if (strmatch(next, "lt"    )) { AVExpr *tmp = d->param[1]; d->param[1] = d->param[0]; d->param[0] = tmp; d->type = e_gt; }
+    else if (strmatch(next, "ld"    )) d->type = e_ld;
+    else if (strmatch(next, "isnan" )) d->type = e_isnan;
+    else if (strmatch(next, "isinf" )) d->type = e_isinf;
+    else if (strmatch(next, "st"    )) d->type = e_st;
+    else if (strmatch(next, "while" )) d->type = e_while;
+    else if (strmatch(next, "floor" )) d->type = e_floor;
+    else if (strmatch(next, "ceil"  )) d->type = e_ceil;
+    else if (strmatch(next, "trunc" )) d->type = e_trunc;
+    else if (strmatch(next, "sqrt"  )) d->type = e_sqrt;
+    else if (strmatch(next, "not"   )) d->type = e_not;
+    else {
+        for (i=0; p->func1_names && p->func1_names[i]; i++) {
+            if (strmatch(next, p->func1_names[i])) {
+                d->a.func1 = p->funcs1[i];
+                d->type = e_func1;
+                *e = d;
+                return 0;
+            }
+        }
+
+        for (i=0; p->func2_names && p->func2_names[i]; i++) {
+            if (strmatch(next, p->func2_names[i])) {
+                d->a.func2 = p->funcs2[i];
+                d->type = e_func2;
+                *e = d;
+                return 0;
+            }
+        }
+
+        av_log(p, AV_LOG_ERROR, "Unknown function in '%s'\n", s0);
+        av_expr_free(d);
+        return AVERROR(EINVAL);
+    }
+
+    *e = d;
+    return 0;
+}
+
+static AVExpr *new_eval_expr(int type, int value, AVExpr *p0, AVExpr *p1)
+{
+    AVExpr *e = av_mallocz(sizeof(AVExpr));
+    if (!e)
+        return NULL;
+    e->type     =type   ;
+    e->value    =value  ;
+    e->param[0] =p0     ;
+    e->param[1] =p1     ;
+    return e;
+}
+
+static int parse_pow(AVExpr **e, Parser *p, int *sign)
+{
+    *sign= (*p->s == '+') - (*p->s == '-');
+    p->s += *sign&1;
+    return parse_primary(e, p);
+}
+
+static int parse_dB(AVExpr **e, Parser *p, int *sign)
+{
+    /* do not filter out the negative sign when parsing a dB value.
+       for example, -3dB is not the same as -(3dB) */
+    if (*p->s == '-') {
+        char *next;
+        double av_unused ignored = strtod(p->s, &next);
+        if (next != p->s && next[0] == 'd' && next[1] == 'B') {
+            *sign = 0;
+            return parse_primary(e, p);
+        }
+    }
+    return parse_pow(e, p, sign);
+}
+
+static int parse_factor(AVExpr **e, Parser *p)
+{
+    int sign, sign2, ret;
+    AVExpr *e0, *e1, *e2;
+    if ((ret = parse_dB(&e0, p, &sign)) < 0)
+        return ret;
+    while(p->s[0]=='^'){
+        e1 = e0;
+        p->s++;
+        if ((ret = parse_dB(&e2, p, &sign2)) < 0) {
+            av_expr_free(e1);
+            return ret;
+        }
+        e0 = new_eval_expr(e_pow, 1, e1, e2);
+        if (!e0) {
+            av_expr_free(e1);
+            av_expr_free(e2);
+            return AVERROR(ENOMEM);
+        }
+        if (e0->param[1]) e0->param[1]->value *= (sign2|1);
+    }
+    if (e0) e0->value *= (sign|1);
+
+    *e = e0;
+    return 0;
+}
+
+static int parse_term(AVExpr **e, Parser *p)
+{
+    int ret;
+    AVExpr *e0, *e1, *e2;
+    if ((ret = parse_factor(&e0, p)) < 0)
+        return ret;
+    while (p->s[0]=='*' || p->s[0]=='/') {
+        int c= *p->s++;
+        e1 = e0;
+        if ((ret = parse_factor(&e2, p)) < 0) {
+            av_expr_free(e1);
+            return ret;
+        }
+        e0 = new_eval_expr(c == '*' ? e_mul : e_div, 1, e1, e2);
+        if (!e0) {
+            av_expr_free(e1);
+            av_expr_free(e2);
+            return AVERROR(ENOMEM);
+        }
+    }
+    *e = e0;
+    return 0;
+}
+
+static int parse_subexpr(AVExpr **e, Parser *p)
+{
+    int ret;
+    AVExpr *e0, *e1, *e2;
+    if ((ret = parse_term(&e0, p)) < 0)
+        return ret;
+    while (*p->s == '+' || *p->s == '-') {
+        e1 = e0;
+        if ((ret = parse_term(&e2, p)) < 0) {
+            av_expr_free(e1);
+            return ret;
+        }
+        e0 = new_eval_expr(e_add, 1, e1, e2);
+        if (!e0) {
+            av_expr_free(e1);
+            av_expr_free(e2);
+            return AVERROR(ENOMEM);
+        }
+    };
+
+    *e = e0;
+    return 0;
+}
+
+static int parse_expr(AVExpr **e, Parser *p)
+{
+    int ret;
+    AVExpr *e0, *e1, *e2;
+    if (p->stack_index <= 0) //protect against stack overflows
+        return AVERROR(EINVAL);
+    p->stack_index--;
+
+    if ((ret = parse_subexpr(&e0, p)) < 0)
+        return ret;
+    while (*p->s == ';') {
+        p->s++;
+        e1 = e0;
+        if ((ret = parse_subexpr(&e2, p)) < 0) {
+            av_expr_free(e1);
+            return ret;
+        }
+        e0 = new_eval_expr(e_last, 1, e1, e2);
+        if (!e0) {
+            av_expr_free(e1);
+            av_expr_free(e2);
+            return AVERROR(ENOMEM);
+        }
+    };
+
+    p->stack_index++;
+    *e = e0;
+    return 0;
+}
+
+static int verify_expr(AVExpr *e)
+{
+    if (!e) return 0;
+    switch (e->type) {
+        case e_value:
+        case e_const: return 1;
+        case e_func0:
+        case e_func1:
+        case e_squish:
+        case e_ld:
+        case e_gauss:
+        case e_isnan:
+        case e_isinf:
+        case e_floor:
+        case e_ceil:
+        case e_trunc:
+        case e_sqrt:
+        case e_not:
+            return verify_expr(e->param[0]);
+        default: return verify_expr(e->param[0]) && verify_expr(e->param[1]);
+    }
+}
+
+int av_expr_parse(AVExpr **expr, const char *s,
+                  const char * const *const_names,
+                  const char * const *func1_names, double (* const *funcs1)(void *, double),
+                  const char * const *func2_names, double (* const *funcs2)(void *, double, double),
+                  int log_offset, void *log_ctx)
+{
+    Parser p = { 0 };
+    AVExpr *e = NULL;
+    char *w = av_malloc(strlen(s) + 1);
+    char *wp = w;
+    const char *s0 = s;
+    int ret = 0;
+
+    if (!w)
+        return AVERROR(ENOMEM);
+
+    while (*s)
+        if (!av_isspace(*s++)) *wp++ = s[-1];
+    *wp++ = 0;
+
+    p.class      = &class;
+    p.stack_index=100;
+    p.s= w;
+    p.const_names = const_names;
+    p.funcs1      = funcs1;
+    p.func1_names = func1_names;
+    p.funcs2      = funcs2;
+    p.func2_names = func2_names;
+    p.log_offset = log_offset;
+    p.log_ctx    = log_ctx;
+
+    if ((ret = parse_expr(&e, &p)) < 0)
+        goto end;
+    if (*p.s) {
+        av_expr_free(e);
+        av_log(&p, AV_LOG_ERROR, "Invalid chars '%s' at the end of expression '%s'\n", p.s, s0);
+        ret = AVERROR(EINVAL);
+        goto end;
+    }
+    if (!verify_expr(e)) {
+        av_expr_free(e);
+        ret = AVERROR(EINVAL);
+        goto end;
+    }
+    *expr = e;
+end:
+    av_free(w);
+    return ret;
+}
+
+double av_expr_eval(AVExpr *e, const double *const_values, void *opaque)
+{
+    Parser p = { 0 };
+
+    p.const_values = const_values;
+    p.opaque     = opaque;
+    return eval_expr(&p, e);
+}
+
+int av_expr_parse_and_eval(double *d, const char *s,
+                           const char * const *const_names, const double *const_values,
+                           const char * const *func1_names, double (* const *funcs1)(void *, double),
+                           const char * const *func2_names, double (* const *funcs2)(void *, double, double),
+                           void *opaque, int log_offset, void *log_ctx)
+{
+    AVExpr *e = NULL;
+    int ret = av_expr_parse(&e, s, const_names, func1_names, funcs1, func2_names, funcs2, log_offset, log_ctx);
+
+    if (ret < 0) {
+        *d = NAN;
+        return ret;
+    }
+    *d = av_expr_eval(e, const_values, opaque);
+    av_expr_free(e);
+    return isnan(*d) ? AVERROR(EINVAL) : 0;
+}
+
+#ifdef TEST
+#include <string.h>
+
+static const double const_values[] = {
+    M_PI,
+    M_E,
+    0
+};
+
+static const char *const const_names[] = {
+    "PI",
+    "E",
+    0
+};
+
+int main(int argc, char **argv)
+{
+    int i;
+    double d;
+    const char *const *expr;
+    static const char *const exprs[] = {
+        "",
+        "1;2",
+        "-20",
+        "-PI",
+        "+PI",
+        "1+(5-2)^(3-1)+1/2+sin(PI)-max(-2.2,-3.1)",
+        "80G/80Gi",
+        "1k",
+        "1Gi",
+        "1gi",
+        "1GiFoo",
+        "1k+1k",
+        "1Gi*3foo",
+        "foo",
+        "foo(",
+        "foo()",
+        "foo)",
+        "sin",
+        "sin(",
+        "sin()",
+        "sin)",
+        "sin 10",
+        "sin(1,2,3)",
+        "sin(1 )",
+        "1",
+        "1foo",
+        "bar + PI + E + 100f*2 + foo",
+        "13k + 12f - foo(1, 2)",
+        "1gi",
+        "1Gi",
+        "st(0, 123)",
+        "st(1, 123); ld(1)",
+        "lte(0, 1)",
+        "lte(1, 1)",
+        "lte(1, 0)",
+        "lt(0, 1)",
+        "lt(1, 1)",
+        "gt(1, 0)",
+        "gt(2, 7)",
+        "gte(122, 122)",
+        /* compute 1+2+...+N */
+        "st(0, 1); while(lte(ld(0), 100), st(1, ld(1)+ld(0));st(0, ld(0)+1)); ld(1)",
+        /* compute Fib(N) */
+        "st(1, 1); st(2, 2); st(0, 1); while(lte(ld(0),10), st(3, ld(1)+ld(2)); st(1, ld(2)); st(2, ld(3)); st(0, ld(0)+1)); ld(3)",
+        "while(0, 10)",
+        "st(0, 1); while(lte(ld(0),100), st(1, ld(1)+ld(0)); st(0, ld(0)+1))",
+        "isnan(1)",
+        "isnan(NAN)",
+        "isnan(INF)",
+        "isinf(1)",
+        "isinf(NAN)",
+        "isinf(INF)",
+        "floor(NAN)",
+        "floor(123.123)",
+        "floor(-123.123)",
+        "trunc(123.123)",
+        "trunc(-123.123)",
+        "ceil(123.123)",
+        "ceil(-123.123)",
+        "sqrt(1764)",
+        "isnan(sqrt(-1))",
+        "not(1)",
+        "not(NAN)",
+        "not(0)",
+        "6.0206dB",
+        "-3.0103dB",
+        NULL
+    };
+
+    for (expr = exprs; *expr; expr++) {
+        printf("Evaluating '%s'\n", *expr);
+        av_expr_parse_and_eval(&d, *expr,
+                               const_names, const_values,
+                               NULL, NULL, NULL, NULL, NULL, 0, NULL);
+        if (isnan(d))
+            printf("'%s' -> nan\n\n", *expr);
+        else
+            printf("'%s' -> %f\n\n", *expr, d);
+    }
+
+    av_expr_parse_and_eval(&d, "1+(5-2)^(3-1)+1/2+sin(PI)-max(-2.2,-3.1)",
+                           const_names, const_values,
+                           NULL, NULL, NULL, NULL, NULL, 0, NULL);
+    printf("%f == 12.7\n", d);
+    av_expr_parse_and_eval(&d, "80G/80Gi",
+                           const_names, const_values,
+                           NULL, NULL, NULL, NULL, NULL, 0, NULL);
+    printf("%f == 0.931322575\n", d);
+
+    if (argc > 1 && !strcmp(argv[1], "-t")) {
+        for (i = 0; i < 1050; i++) {
+            START_TIMER;
+            av_expr_parse_and_eval(&d, "1+(5-2)^(3-1)+1/2+sin(PI)-max(-2.2,-3.1)",
+                                   const_names, const_values,
+                                   NULL, NULL, NULL, NULL, NULL, 0, NULL);
+            STOP_TIMER("av_expr_parse_and_eval");
+        }
+    }
+
+    return 0;
+}
+#endif