int px[4], py[4];
AVFrame *out;
+ var_values[VAR_PX] = s->x;
+ var_values[VAR_PY] = s->y;
+ var_values[VAR_PZOOM] = s->prev_zoom;
+ var_values[VAR_PDURATION] = s->prev_nb_frames;
var_values[VAR_TIME] = pts * av_q2d(outlink->time_base);
var_values[VAR_FRAME] = i;
var_values[VAR_ON] = outlink->frame_count + 1;
AVFilterContext *ctx = outlink->src;
ZPContext *s = ctx->priv;
AVFrame *in = s->in;
- double zoom=1, dx=0, dy=0;
+ double zoom=-1, dx=-1, dy=-1;
int ret = -1;
if (in) {
}
if (s->current_frame >= s->nb_frames) {
- s->x = dx;
- s->y = dy;
- s->prev_zoom = zoom;
+ if (dx != -1)
+ s->x = dx;
+ if (dy != -1)
+ s->y = dy;
+ if (zoom != -1)
+ s->prev_zoom = zoom;
s->prev_nb_frames = s->nb_frames;
s->nb_frames = 0;
s->current_frame = 0;