From 90096e42e1e9c075a1991e592c5965cf3f643cd1 Mon Sep 17 00:00:00 2001 From: Steven Liu Date: Thu, 19 Jan 2017 07:09:22 +0800 Subject: [PATCH] avfilter:vf_drawtext: add new line space size set parameter add line_spacing parameter to set the space between two lines Based on an idea by: Leandro Santiago Reviewed-by: Michael Niedermayer Signed-off-by: Steven Liu --- doc/filters.texi | 4 ++++ libavfilter/vf_drawtext.c | 4 +++- 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/doc/filters.texi b/doc/filters.texi index 94548b1a1a..a0c29805f0 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -6750,6 +6750,10 @@ option, check the "Color" section in the ffmpeg-utils manual. The default value of @var{boxcolor} is "white". +@item line_spacing +Set the line spacing in pixels of the border to be drawn around the box using @var{box}. +The default value of @var{line_spacing} is 0. + @item borderw Set the width of the border to be drawn around the text using @var{bordercolor}. The default value of @var{borderw} is 0. diff --git a/libavfilter/vf_drawtext.c b/libavfilter/vf_drawtext.c index 649240b010..0b9472508f 100644 --- a/libavfilter/vf_drawtext.c +++ b/libavfilter/vf_drawtext.c @@ -158,6 +158,7 @@ typedef struct DrawTextContext { int borderw; ///< border width unsigned int fontsize; ///< font size to use + int line_spacing; ///< lines spacing in pixels short int draw_box; ///< draw box around text - true or false int boxborderw; ///< box border width int use_kerning; ///< font kerning is used - true/false @@ -209,6 +210,7 @@ static const AVOption drawtext_options[]= { {"shadowcolor", "set shadow color", OFFSET(shadowcolor.rgba), AV_OPT_TYPE_COLOR, {.str="black"}, CHAR_MIN, CHAR_MAX, FLAGS}, {"box", "set box", OFFSET(draw_box), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1 , FLAGS}, {"boxborderw", "set box border width", OFFSET(boxborderw), AV_OPT_TYPE_INT, {.i64=0}, INT_MIN, INT_MAX , FLAGS}, + {"line_spacing", "set line spacing in pixels", OFFSET(line_spacing), AV_OPT_TYPE_INT, {.i64=0}, INT_MIN, INT_MAX,FLAGS}, {"fontsize", "set font size", OFFSET(fontsize), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX , FLAGS}, {"x", "set x expression", OFFSET(x_expr), AV_OPT_TYPE_STRING, {.str="0"}, CHAR_MIN, CHAR_MAX, FLAGS}, {"y", "set y expression", OFFSET(y_expr), AV_OPT_TYPE_STRING, {.str="0"}, CHAR_MIN, CHAR_MAX, FLAGS}, @@ -1250,7 +1252,7 @@ static int draw_text(AVFilterContext *ctx, AVFrame *frame, if (is_newline(code)) { max_text_line_w = FFMAX(max_text_line_w, x); - y += s->max_glyph_h; + y += s->max_glyph_h + s->line_spacing; x = 0; continue; }