player: add option not to use OSD/fontconfig

Makeshift-solution for working around certain fontconfig issues.

With --use-text-osd=no, libass and fontconfig won't be initialized, and
fontconfig won't block everything with scanning for fonts.

4 files changed, 16 insertions, 0 deletions

diff --git a/DOCS/man/options.rst b/DOCS/man/options.rst
index 226259b2c2..a9d007813a 100644
--- a/DOCS/man/options.rst
+++ b/DOCS/man/options.rst
@@ -2496,6 +2496,16 @@ OSD
 
     Default: 0.
 
+``--use-text-osd=<yes|no>``
+    Disable text OSD rendering completely. (This includes the complete OSC as
+    well.) This is mostly useful for avoiding loading fontconfig in situations
+    where fontconfig does not behave well, and OSD is unused - this could for
+    example allow GUI programs using libmpv to workaround fontconfig issues.
+
+    Note that selecting subtitles of any kind still initializes fontconfig.
+
+    Default: ``no``.
+
 
 Screenshot
 ----------
diff --git a/options/options.c b/options/options.c
index 7f78d884a6..3327b206e1 100644
--- a/options/options.c
+++ b/options/options.c
@@ -351,6 +351,7 @@ const m_option_t mp_opts[] = {
     OPT_FLOATRANGE("osd-bar-w", osd_bar_w, 0, 1, 100),
     OPT_FLOATRANGE("osd-bar-h", osd_bar_h, 0, 0.1, 50),
     OPT_SUBSTRUCT("osd", osd_style, osd_style_conf, 0),
+    OPT_FLAG("use-text-osd", use_text_osd, CONF_GLOBAL),
     OPT_SUBSTRUCT("sub-text", sub_text_style, osd_style_conf, 0),
     OPT_FLAG("sub-clear-on-seek", sub_clear_on_seek, 0),
 
@@ -610,6 +611,7 @@ const struct MPOpts mp_default_opts = {
     .osd_bar_h = 3.125,
     .osd_scale = 1,
     .osd_scale_by_window = 1,
+    .use_text_osd = 1,
 #if HAVE_LUA
     .lua_load_osc = 1,
     .lua_load_ytdl = 0,
diff --git a/options/options.h b/options/options.h
index 752d1f4801..dadcb0800a 100644
--- a/options/options.h
+++ b/options/options.h
@@ -224,6 +224,7 @@ typedef struct MPOpts {
     char **sub_name;
     char **sub_paths;
     int sub_auto;
+    int use_text_osd;
     int osd_bar_visible;
     float osd_bar_align_x;
     float osd_bar_align_y;
diff --git a/sub/osd_libass.c b/sub/osd_libass.c
index 3275cc59e6..573a373a06 100644
--- a/sub/osd_libass.c
+++ b/sub/osd_libass.c
@@ -471,6 +471,9 @@ static void update_object(struct osd_state *osd, struct osd_object *obj)
 void osd_object_get_bitmaps(struct osd_state *osd, struct osd_object *obj,
                             struct sub_bitmaps *out_imgs)
 {
+    if (!osd->opts->use_text_osd)
+        return;
+
     if (obj->force_redraw)
         update_object(osd, obj);