int mode;
int slide;
int w, h;
+ AVRational frame_rate;
AVFrame *out;
int x;
float *values[4];
int values_size[4];
int nb_values;
+ int64_t prev_pts;
} DrawGraphContext;
#define OFFSET(x) offsetof(DrawGraphContext, x)
{"picture", "display graph in single frame", OFFSET(slide), AV_OPT_TYPE_CONST, {.i64=4}, 0, 0, FLAGS, "slide"},
{ "size", "set graph size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="900x256"}, 0, 0, FLAGS },
{ "s", "set graph size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="900x256"}, 0, 0, FLAGS },
+ { "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
+ { "r", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
{ NULL }
};
AVDictionary *metadata;
AVDictionaryEntry *e;
AVFrame *out = s->out;
+ AVFrame *clone = NULL;
+ int64_t in_pts, out_pts;
int i;
if (s->slide == 4 && s->nb_values >= s->values_size[0] / sizeof(float)) {
s->nb_values++;
s->x++;
+ in_pts = in->pts;
+
av_frame_free(&in);
if (s->slide == 4)
return 0;
- return ff_filter_frame(outlink, av_frame_clone(s->out));
+ out_pts = av_rescale_q(in_pts, inlink->time_base, outlink->time_base);
+
+ if (out_pts == s->prev_pts)
+ return 0;
+
+ clone = av_frame_clone(s->out);
+ if (!clone)
+ return AVERROR(ENOMEM);
+
+ clone->pts = s->prev_pts = out_pts;
+ return ff_filter_frame(outlink, clone);
}
static int request_frame(AVFilterLink *outlink)
outlink->w = s->w;
outlink->h = s->h;
outlink->sample_aspect_ratio = (AVRational){1,1};
+ outlink->frame_rate = s->frame_rate;
+ outlink->time_base = av_inv_q(outlink->frame_rate);
+ s->prev_pts = AV_NOPTS_VALUE;
return 0;
}