[FFmpeg-devel] [PATCH] lavu/eval: add native support to lte and lt functions

[Paul B Mahol]

On 3/5/13, Stefano Sabatini <stefasab at gmail.com> wrote:
> ---
>  libavutil/eval.c |    8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/libavutil/eval.c b/libavutil/eval.c
> index 1449e49..4875725 100644
> --- a/libavutil/eval.c
> +++ b/libavutil/eval.c
> @@ -141,7 +141,7 @@ 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_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_sqrt, e_not, e_random, e_hypot, e_gcd,
> @@ -275,6 +275,8 @@ static double eval_expr(Parser *p, AVExpr *e)
>                  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_lt:  return e->value * (d <  d2 ? 1.0 : 0.0);
> +                case e_lte: 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 * ((!CONFIG_FTRAPV || d2 ) ? (d
> / d2) : d * INFINITY);
> @@ -401,8 +403,8 @@ static int parse_primary(AVExpr **e, Parser *p)
>      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, "lte"   )) d->type = e_lte;
> +    else if (strmatch(next, "lt"    )) d->type = e_lt;
>      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;
> --
> 1.7.9.5
>
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what funny code, ok