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Code Issues Releases Activity

avfilter/idet: add current frame classification to metadata

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Fixes ticket 3832

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Kevin Mitchell 2014-11-01 04:10:15 -07:00 committed by Michael Niedermayer
parent 2847843868
commit ae6118de19
2 changed files with 20 additions and 5 deletions
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13
doc/filters.texi
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@ -5577,9 +5577,17 @@ Detect video interlacing type.
This filter tries to detect if the input is interlaced or progressive,
top or bottom field first.
Single frame detection considers only immediately adjacent frames when classifying each frame.
Multiple frame detection incorporates the classification history of previous frames.
The filter will log these metadata values:
@table @option
@item single.current_frame
Detected type of current frame using single-frame detection. One of:
``tff'' (top field first), ``bff'' (bottom field first),
``progressive'', or ``undetermined''
@item single.tff
Cumulative number of frames detected as top field first using single-frame detection.
@ -5589,6 +5597,11 @@ Cumulative number of frames detected as top field first using multiple-frame det
@item single.bff
Cumulative number of frames detected as bottom field first using single-frame detection.
@item multiple.current_frame
Detected type of current frame using multiple-frame detection. One of:
``tff'' (top field first), ``bff'' (bottom field first),
``progressive'', or ``undetermined''
@item multiple.bff
Cumulative number of frames detected as bottom field first using multiple-frame detection.

12
libavfilter/vf_idet.c
View File

@ -40,10 +40,10 @@ AVFILTER_DEFINE_CLASS(idet);
static const char *type2str(Type type)
{
switch(type) {
case TFF : return "Top Field First ";
case BFF : return "Bottom Field First";
case PROGRESSIVE : return "Progressive ";
case UNDETERMINED : return "Undetermined ";
case TFF : return "tff";
case BFF : return "bff";
case PROGRESSIVE : return "progressive";
case UNDETERMINED : return "undetermined";
}
return NULL;
}
@ -149,13 +149,15 @@ static void filter(AVFilterContext *ctx)
idet->prestat [ type] ++;
idet->poststat[idet->last_type] ++;
av_log(ctx, AV_LOG_DEBUG, "Single frame:%s, Multi frame:%s\n", type2str(type), type2str(idet->last_type));
av_log(ctx, AV_LOG_DEBUG, "Single frame:%12s, Multi frame:%12s\n", type2str(type), type2str(idet->last_type));
av_dict_set (metadata, "lavfi.idet.single.current_frame", type2str(type), 0);
av_dict_set_int(metadata, "lavfi.idet.single.tff", idet->prestat[TFF], 0);
av_dict_set_int(metadata, "lavfi.idet.single.bff", idet->prestat[BFF], 0);
av_dict_set_int(metadata, "lavfi.idet.single.progressive", idet->prestat[PROGRESSIVE], 0);
av_dict_set_int(metadata, "lavfi.idet.single.undetermined", idet->prestat[UNDETERMINED], 0);
av_dict_set (metadata, "lavfi.idet.multiple.current_frame", type2str(idet->last_type), 0);
av_dict_set_int(metadata, "lavfi.idet.multiple.tff", idet->poststat[TFF], 0);
av_dict_set_int(metadata, "lavfi.idet.multiple.bff", idet->poststat[BFF], 0);
av_dict_set_int(metadata, "lavfi.idet.multiple.progressive", idet->poststat[PROGRESSIVE], 0);