Merge pull request #275 from trav90/ffvpx-resync

Resync ffvpx code with 3.4.2-release from upstream

1 files changed, 16 insertions, 2 deletions

diff --git a/media/ffvpx/libavutil/eval.c b/media/ffvpx/libavutil/eval.c
index fc12885c2..e5948793b 100644
--- a/media/ffvpx/libavutil/eval.c
+++ b/media/ffvpx/libavutil/eval.c
@@ -38,6 +38,7 @@
 #include "fftime.h"
 #include "avstring.h"
 #include "timer.h"
+#include "reverse.h"
 
 typedef struct Parser {
     const AVClass *class;
@@ -152,9 +153,9 @@ struct AVExpr {
         e_squish, e_gauss, e_ld, e_isnan, e_isinf,
         e_mod, e_max, e_min, e_eq, e_gt, e_gte, e_lte, e_lt,
         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_last, e_st, e_while, e_taylor, e_root, e_floor, e_ceil, e_trunc, e_round,
         e_sqrt, e_not, e_random, e_hypot, e_gcd,
-        e_if, e_ifnot, e_print, e_bitand, e_bitor, e_between, e_clip
+        e_if, e_ifnot, e_print, e_bitand, e_bitor, e_between, e_clip, e_atan2, e_lerp,
     } type;
     double value; // is sign in other types
     union {
@@ -188,6 +189,7 @@ static double eval_expr(Parser *p, AVExpr *e)
         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_round:  return e->value * round(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_if:     return e->value * (eval_expr(p, e->param[0]) ? eval_expr(p, e->param[1]) :
@@ -206,6 +208,12 @@ static double eval_expr(Parser *p, AVExpr *e)
             return e->value * (d >= eval_expr(p, e->param[1]) &&
                                d <= eval_expr(p, e->param[2]));
         }
+        case e_lerp: {
+            double v0 = eval_expr(p, e->param[0]);
+            double v1 = eval_expr(p, e->param[1]);
+            double f  = eval_expr(p, e->param[2]);
+            return v0 + (v1 - v0) * f;
+        }
         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;
@@ -305,6 +313,7 @@ static double eval_expr(Parser *p, AVExpr *e)
                 case e_last:return e->value * d2;
                 case e_st : return e->value * (p->var[av_clip(d, 0, VARS-1)]= d2);
                 case e_hypot:return e->value * hypot(d, d2);
+                case e_atan2:return e->value * atan2(d, d2);
                 case e_bitand: return isnan(d) || isnan(d2) ? NAN : e->value * ((long int)d & (long int)d2);
                 case e_bitor:  return isnan(d) || isnan(d2) ? NAN : e->value * ((long int)d | (long int)d2);
             }
@@ -438,6 +447,7 @@ static int parse_primary(AVExpr **e, Parser *p)
     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, "round" )) d->type = e_round;
     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;
@@ -451,6 +461,8 @@ static int parse_primary(AVExpr **e, Parser *p)
     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 if (strmatch(next, "atan2" )) d->type = e_atan2;
+    else if (strmatch(next, "lerp"  )) d->type = e_lerp;
     else {
         for (i=0; p->func1_names && p->func1_names[i]; i++) {
             if (strmatch(next, p->func1_names[i])) {
@@ -634,6 +646,7 @@ static int verify_expr(AVExpr *e)
         case e_floor:
         case e_ceil:
         case e_trunc:
+        case e_round:
         case e_sqrt:
         case e_not:
         case e_random:
@@ -648,6 +661,7 @@ static int verify_expr(AVExpr *e)
                    && (!e->param[2] || verify_expr(e->param[2]));
         case e_between:
         case e_clip:
+        case e_lerp:
             return verify_expr(e->param[0]) &&
                    verify_expr(e->param[1]) &&
                    verify_expr(e->param[2]);