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avfilter/f_select.c: add support for iw and ih variables 

Fixes ticket #10509.

Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
PoorvaGaikar 2024-03-09 00:27:25 +05:30 committed by Marton Balint
parent 9e674b3160
commit 8b6e66d0f0
2 changed files with 18 additions and 0 deletions
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6
doc/filters.texi
View File

@ -30882,6 +30882,12 @@ missing.
That basically means that an input frame is selected if its pts is within the
interval set by the concat demuxer.
@item iw @emph{(video only)}
Represents the width of the input video frame.
@item ih @emph{(video only)}
Represents the height of the input video frame.
@end table
The default value of the select expression is "1".

12
libavfilter/f_select.c
View File

@ -90,6 +90,9 @@ static const char *const var_names[] = {
"concatdec_select", ///< frame is within the interval set by the concat demuxer
"ih", ///< ih: Represents the height of the input video frame.
"iw", ///< iw: Represents the width of the input video frame.
NULL
};
@ -144,6 +147,9 @@ enum var_name {
VAR_CONCATDEC_SELECT,
VAR_IH,
VAR_IW,
VAR_VARS_NB
};
@ -264,6 +270,9 @@ static int config_input(AVFilterLink *inlink)
select->var_values[VAR_CONSUMED_SAMPLES_N] = NAN;
select->var_values[VAR_SAMPLES_N] = NAN;
select->var_values[VAR_IH] = NAN;
select->var_values[VAR_IW] = NAN;
select->var_values[VAR_SAMPLE_RATE] =
inlink->type == AVMEDIA_TYPE_AUDIO ? inlink->sample_rate : NAN;
@ -357,6 +366,9 @@ FF_ENABLE_DEPRECATION_WARNINGS
break;
case AVMEDIA_TYPE_VIDEO:
select->var_values[VAR_IH] = frame->height;
select->var_values[VAR_IW] = frame->width;
select->var_values[VAR_INTERLACE_TYPE] =
!(frame->flags & AV_FRAME_FLAG_INTERLACED) ? INTERLACE_TYPE_P :
(frame->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST) ? INTERLACE_TYPE_T : INTERLACE_TYPE_B;