On Mon, Mar 30, 2015 at 09:57:35PM +0200, Michael Niedermayer wrote:
> Signed-off-by: Michael Niedermayer <michae...@gmx.at>
> ---
> libavfilter/vf_vignette.c | 9 +++++++--
> 1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/libavfilter/vf_vignette.c b/libavfilter/vf_vignette.c
> index 806bd72..9a05651 100644
> --- a/libavfilter/vf_vignette.c
> +++ b/libavfilter/vf_vignette.c
> @@ -161,15 +161,20 @@ static void update_context(VignetteContext *s,
> AVFilterLink *inlink, AVFrame *fr
> s->var_values[VAR_T] = TS2T(frame->pts, inlink->time_base);
> s->var_values[VAR_PTS] = TS2D(frame->pts);
> } else {
> - s->var_values[VAR_N] = 0;
> + s->var_values[VAR_N] = NAN;
Why?
> s->var_values[VAR_T] = NAN;
> s->var_values[VAR_PTS] = NAN;
> }
>
> - s->angle = av_clipf(av_expr_eval(s->angle_pexpr, s->var_values, NULL),
> 0, M_PI_2);
> + s->angle = av_expr_eval(s->angle_pexpr, s->var_values, NULL);
> s->x0 = av_expr_eval(s->x0_pexpr, s->var_values, NULL);
> s->y0 = av_expr_eval(s->y0_pexpr, s->var_values, NULL);
>
> + if (isnan(s->x0) || isnan(s->y0) || isnan(s->angle))
> + s->eval_mode = EVAL_MODE_FRAME;
> +
> + s->angle = av_clipf(s->angle, 0, M_PI_2);
> +
> if (s->backward) {
> for (y = 0; y < inlink->h; y++) {
> for (x = 0; x < inlink->w; x++)
--
Clément B.
pgpSfM2O3VWo8.pgp
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