diff options
| author | Gyan Doshi <ffmpeg@gyani.pro> | 2022-02-28 12:55:42 +0530 |
|---|---|---|
| committer | Gyan Doshi <ffmpeg@gyani.pro> | 2022-03-02 12:56:58 +0530 |
| commit | 4b72bca6ca3f982614ac2f94160c55abe3778555 (patch) | |
| tree | ed23b362a598c6c0e451338f753806a229043323 | |
| parent | 72604b10f4e1debebc4830bd94830e7066ea9999 (diff) | |
avfilter/drawtext: change reload value to an interval
Allows user to specify a frame interval at which textfile is reloaded.
| -rw-r--r-- | doc/filters.texi | 6 | ||||
| -rw-r--r-- | libavfilter/vf_drawtext.c | 6 |
2 files changed, 7 insertions, 5 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index c5cba2aa2d..8cba7f744d 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -11278,8 +11278,10 @@ text data in detection bboxes of side data. So please do not use this parameter if you are not sure about the text source. @item reload -If set to 1, the @var{textfile} will be reloaded before each frame. -Be sure to update it atomically, or it may be read partially, or even fail. +The @var{textfile} will be reloaded at specified frame interval. +Be sure to update @var{textfile} atomically, or it may be read partially, +or even fail. +Range is 0 to INT_MAX. Default is 0. @item x @item y diff --git a/libavfilter/vf_drawtext.c b/libavfilter/vf_drawtext.c index 2a88692cbd..6ba3f6622a 100644 --- a/libavfilter/vf_drawtext.c +++ b/libavfilter/vf_drawtext.c @@ -198,7 +198,7 @@ typedef struct DrawTextContext { AVRational tc_rate; ///< frame rate for timecode AVTimecode tc; ///< timecode context int tc24hmax; ///< 1 if timecode is wrapped to 24 hours, 0 otherwise - int reload; ///< reload text file for each frame + int reload; ///< reload text file at specified frame interval int start_number; ///< starting frame number for n/frame_num var char *text_source_string; ///< the string to specify text data source enum AVFrameSideDataType text_source; @@ -245,7 +245,7 @@ static const AVOption drawtext_options[]= { {"timecode_rate", "set rate (timecode only)", OFFSET(tc_rate), AV_OPT_TYPE_RATIONAL, {.dbl=0}, 0, INT_MAX, FLAGS}, {"r", "set rate (timecode only)", OFFSET(tc_rate), AV_OPT_TYPE_RATIONAL, {.dbl=0}, 0, INT_MAX, FLAGS}, {"rate", "set rate (timecode only)", OFFSET(tc_rate), AV_OPT_TYPE_RATIONAL, {.dbl=0}, 0, INT_MAX, FLAGS}, - {"reload", "reload text file for each frame", OFFSET(reload), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, + {"reload", "reload text file at specified frame interval", OFFSET(reload), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS}, { "alpha", "apply alpha while rendering", OFFSET(a_expr), AV_OPT_TYPE_STRING, { .str = "1" }, .flags = FLAGS }, {"fix_bounds", "check and fix text coords to avoid clipping", OFFSET(fix_bounds), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, {"start_number", "start frame number for n/frame_num variable", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS}, @@ -1565,7 +1565,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame) } } - if (s->reload) { + if (s->reload && !(inlink->frame_count_out % s->reload)) { if ((ret = load_textfile(ctx)) < 0) { av_frame_free(&frame); return ret; |