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lavfi/bbox: export bbox info to frame metadata 

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2013-05-26 09:53:03 +00:00
parent add8c63ce4
commit c8e9c9275f
1 changed files with 14 additions and 0 deletions
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14
libavfilter/vf_bbox.c
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@ -60,12 +60,17 @@ static int query_formats(AVFilterContext *ctx)
return 0;
}
#define SET_META(key, value) \
snprintf(buf, sizeof(buf), "%d", value); \
av_dict_set(metadata, #key, buf, 0); \
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
AVFilterContext *ctx = inlink->dst;
BBoxContext *bbox = ctx->priv;
FFBoundingBox box;
int has_bbox, w, h;
char buf[32];
has_bbox =
ff_calculate_bounding_box(&box,
@ -79,6 +84,15 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
av_ts2str(frame->pts), av_ts2timestr(frame->pts, &inlink->time_base));
if (has_bbox) {
AVDictionary **metadata = avpriv_frame_get_metadatap(frame);
SET_META("lavfi.bbox.x1", box.x1)
SET_META("lavfi.bbox.x2", box.x2)
SET_META("lavfi.bbox.y1", box.y1)
SET_META("lavfi.bbox.y2", box.y2)
SET_META("lavfi.bbox.w", w)
SET_META("lavfi.bbox.h", h)
av_log(ctx, AV_LOG_INFO,
" x1:%d x2:%d y1:%d y2:%d w:%d h:%d"
" crop=%d:%d:%d:%d drawbox=%d:%d:%d:%d",