#include "libavutil/pixdesc.h"
#include "avfilter.h"
+#include "filters.h"
#include "internal.h"
typedef struct SeparateFieldsContext {
return ff_filter_frame(outlink, inpicref);
}
-static int request_frame(AVFilterLink *outlink)
+static int flush_frame(AVFilterLink *outlink, int64_t pts, int64_t *out_pts)
{
AVFilterContext *ctx = outlink->src;
SeparateFieldsContext *s = ctx->priv;
- int ret;
+ int ret = 0;
- ret = ff_request_frame(ctx->inputs[0]);
- if (ret == AVERROR_EOF && s->second) {
- s->second->pts *= 2;
+ if (s->second) {
+ *out_pts = s->second->pts += pts;
extract_field(s->second, s->nb_planes, s->second->top_field_first);
ret = ff_filter_frame(outlink, s->second);
- s->second = 0;
+ s->second = NULL;
}
return ret;
}
+static int activate(AVFilterContext *ctx)
+{
+ AVFilterLink *inlink = ctx->inputs[0];
+ AVFilterLink *outlink = ctx->outputs[0];
+ AVFrame *in;
+ int64_t pts;
+ int ret, status;
+
+ FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
+
+ ret = ff_inlink_consume_frame(inlink, &in);
+ if (ret < 0)
+ return ret;
+ if (ret > 0)
+ return filter_frame(inlink, in);
+
+ if (ff_inlink_acknowledge_status(inlink, &status, &pts)) {
+ if (status == AVERROR_EOF) {
+ int64_t out_pts = pts;
+
+ ret = flush_frame(outlink, pts, &out_pts);
+ ff_outlink_set_status(outlink, status, out_pts);
+ return ret;
+ }
+ }
+
+ FF_FILTER_FORWARD_WANTED(outlink, inlink);
+
+ return FFERROR_NOT_READY;
+}
+
static av_cold void uninit(AVFilterContext *ctx)
{
SeparateFieldsContext *s = ctx->priv;
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
- .filter_frame = filter_frame,
},
{ NULL }
};
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_props_output,
- .request_frame = request_frame,
},
{ NULL }
};
-AVFilter ff_vf_separatefields = {
+const AVFilter ff_vf_separatefields = {
.name = "separatefields",
.description = NULL_IF_CONFIG_SMALL("Split input video frames into fields."),
.priv_size = sizeof(SeparateFieldsContext),
+ .activate = activate,
.uninit = uninit,
.inputs = separatefields_inputs,
.outputs = separatefields_outputs,