diff --git a/doc/filters.texi b/doc/filters.texi index db2f4b7ea7..428986a1e9 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -31111,6 +31111,9 @@ Represents the width of the input video frame. @item ih @emph{(video only)} Represents the height of the input video frame. +@item view @emph{(video only)} +View ID for multi-view video. + @end table The default value of the select expression is "1". diff --git a/libavfilter/f_select.c b/libavfilter/f_select.c index 6ba96bd7c5..ba0ae31f1b 100644 --- a/libavfilter/f_select.c +++ b/libavfilter/f_select.c @@ -93,6 +93,8 @@ static const char *const var_names[] = { "ih", ///< ih: Represents the height of the input video frame. "iw", ///< iw: Represents the width of the input video frame. + "view", + NULL }; @@ -150,6 +152,8 @@ enum var_name { VAR_IH, VAR_IW, + VAR_VIEW, + VAR_VARS_NB }; @@ -343,6 +347,7 @@ static void select_frame(AVFilterContext *ctx, AVFrame *frame) SelectContext *select = ctx->priv; AVFilterLink *inlink = ctx->inputs[0]; FilterLink *inl = ff_filter_link(inlink); + const AVFrameSideData *sd; double res; if (isnan(select->var_values[VAR_START_PTS])) @@ -381,6 +386,10 @@ FF_ENABLE_DEPRECATION_WARNINGS snprintf(buf, sizeof(buf), "%f", select->var_values[VAR_SCENE]); av_dict_set(&frame->metadata, "lavfi.scene_score", buf, 0); } + + sd = av_frame_side_data_get(frame->side_data, frame->nb_side_data, + AV_FRAME_DATA_VIEW_ID); + select->var_values[VAR_VIEW] = sd ? *(int*)sd->data : NAN; break; }