diff options
Diffstat (limited to 'ext/cairo/gsttextoverlay.c')
| -rw-r--r-- | ext/cairo/gsttextoverlay.c | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/ext/cairo/gsttextoverlay.c b/ext/cairo/gsttextoverlay.c index ae1ee6fc..bf904efe 100644 --- a/ext/cairo/gsttextoverlay.c +++ b/ext/cairo/gsttextoverlay.c @@ -67,6 +67,8 @@ enum #define DEFAULT_XPAD 25 #define DEFAULT_FONT "sans" +#define GST_CAIRO_TEXT_OVERLAY_DEFAULT_SCALE 20.0 + static GstStaticPadTemplate cairo_text_overlay_src_template_factory = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, @@ -248,9 +250,6 @@ gst_text_overlay_init (GstCairoTextOverlay * overlay, overlay->need_render = TRUE; overlay->font = g_strdup (DEFAULT_FONT); - overlay->slant = CAIRO_FONT_SLANT_NORMAL; - overlay->weight = CAIRO_FONT_WEIGHT_NORMAL; - overlay->scale = 20; gst_text_overlay_font_init (overlay); overlay->fps_n = 0; @@ -274,6 +273,33 @@ gst_text_overlay_font_init (GstCairoTextOverlay * overlay) cairo_font_extents_t font_extents; cairo_surface_t *surface; cairo_t *cr; + gchar *font_desc, *sep; + + font_desc = g_ascii_strdown (overlay->font, -1); + + /* cairo_select_font_face() does not parse the size at the end, so we have + * to do that ourselves; same for slate and weight */ + sep = MAX (strrchr (font_desc, ' '), strrchr (font_desc, ',')); + if (sep != NULL && g_strtod (sep, NULL) > 0.0) { + /* there may be a suffix such as 'px', but we just ignore that for now */ + overlay->scale = g_strtod (sep, NULL); + } else { + overlay->scale = GST_CAIRO_TEXT_OVERLAY_DEFAULT_SCALE; + } + if (strstr (font_desc, "bold")) + overlay->weight = CAIRO_FONT_WEIGHT_BOLD; + else + overlay->weight = CAIRO_FONT_WEIGHT_NORMAL; + + if (strstr (font_desc, "italic")) + overlay->slant = CAIRO_FONT_SLANT_ITALIC; + else if (strstr (font_desc, "oblique")) + overlay->slant = CAIRO_FONT_SLANT_OBLIQUE; + else + overlay->slant = CAIRO_FONT_SLANT_NORMAL; + + GST_LOG_OBJECT (overlay, "Font desc: '%s', scale=%f, weight=%d, slant=%d", + overlay->font, overlay->scale, overlay->weight, overlay->slant); surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 256, 256); cr = cairo_create (surface); @@ -290,6 +316,7 @@ gst_text_overlay_font_init (GstCairoTextOverlay * overlay) cairo_destroy (cr); cairo_surface_destroy (surface); + g_free (font_desc); } static void |