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subtitleoverlay: Add silent property to disable subtitles

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This tries to disable subtitles in the overlay or renderer
and if that's not possible it goes into passthrough mode.
This commit is contained in:
Sebastian Dröge 2009-11-07 21:09:53 +01:00
parent eb2d207811
commit e869b57296
2 changed files with 101 additions and 1 deletions
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97
gst/playback/gstsubtitleoverlay.c
View file

@ -68,6 +68,7 @@ GST_STATIC_PAD_TEMPLATE ("subtitle_sink",
enum
{
PROP_0,
PROP_SILENT,
PROP_FONT_DESC
};
@ -488,6 +489,7 @@ _setup_passthrough (GstSubtitleOverlay * self)
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->srcpad), NULL);
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->video_sinkpad), NULL);
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->subtitle_sinkpad), NULL);
self->silent_property = NULL;
_remove_element (self, &self->post_colorspace);
_remove_element (self, &self->overlay);
_remove_element (self, &self->parser);
@ -589,6 +591,32 @@ gst_subtitle_overlay_set_fps (GstSubtitleOverlay * self)
g_object_set (self->parser, "video-fps", self->fps_n, self->fps_d, NULL);
}
static const gchar *
_get_silent_property (GstElement * element, gboolean * invert)
{
static const struct
{
const gchar *name;
gboolean invert;
} properties[] = { {
"silent", FALSE}, {
"enable", TRUE}};
GObjectClass *gobject_class;
GParamSpec *pspec;
guint i;
gobject_class = G_OBJECT_GET_CLASS (element);
for (i = 0; i < G_N_ELEMENTS (properties); i++) {
pspec = g_object_class_find_property (gobject_class, properties[i].name);
if (pspec && pspec->value_type == G_TYPE_BOOLEAN) {
*invert = properties[i].invert;
return properties[i].name;
}
}
return NULL;
}
static void
_pad_blocked_cb (GstPad * pad, gboolean blocked, gpointer user_data)
{
@ -643,6 +671,12 @@ _pad_blocked_cb (GstPad * pad, gboolean blocked, gpointer user_data)
subcaps = NULL;
}
if (self->silent && !self->silent_property) {
_setup_passthrough (self);
do_async_done (self);
goto out;
}
/* Now do something with the caps */
if (subcaps && !self->subtitle_flush) {
GstPad *target =
@ -716,6 +750,7 @@ _pad_blocked_cb (GstPad * pad, gboolean blocked, gpointer user_data)
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->video_sinkpad), NULL);
gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (self->subtitle_sinkpad),
NULL);
self->silent_property = NULL;
_remove_element (self, &self->post_colorspace);
_remove_element (self, &self->overlay);
_remove_element (self, &self->parser);
@ -780,6 +815,8 @@ _pad_blocked_cb (GstPad * pad, gboolean blocked, gpointer user_data)
continue;
}
overlay = self->overlay;
self->silent_property = "silent";
self->silent_property_invert = FALSE;
/* Set some properties */
g_object_set (G_OBJECT (overlay),
@ -962,6 +999,11 @@ _pad_blocked_cb (GstPad * pad, gboolean blocked, gpointer user_data)
"halign", "center", "valign", "bottom", "wait-text", FALSE, NULL);
if (self->font_desc)
g_object_set (G_OBJECT (element), "font-desc", self->font_desc, NULL);
self->silent_property = "silent";
self->silent_property_invert = FALSE;
} else {
self->silent_property =
_get_silent_property (element, &self->silent_property_invert);
}
/* First link everything internally */
@ -1235,6 +1277,7 @@ gst_subtitle_overlay_change_state (GstElement * element,
}
/* Remove elements */
self->silent_property = NULL;
_remove_element (self, &self->post_colorspace);
_remove_element (self, &self->overlay);
_remove_element (self, &self->parser);
@ -1252,6 +1295,27 @@ gst_subtitle_overlay_change_state (GstElement * element,
return ret;
}
static void
gst_subtitle_overlay_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY_CAST (object);
switch (prop_id) {
case PROP_SILENT:
g_value_set_boolean (value, self->silent);
break;
case PROP_FONT_DESC:
GST_SUBTITLE_OVERLAY_LOCK (self);
g_value_set_string (value, self->font_desc);
GST_SUBTITLE_OVERLAY_UNLOCK (self);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_subtitle_overlay_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
@ -1259,6 +1323,30 @@ gst_subtitle_overlay_set_property (GObject * object, guint prop_id,
GstSubtitleOverlay *self = GST_SUBTITLE_OVERLAY_CAST (object);
switch (prop_id) {
case PROP_SILENT:
GST_SUBTITLE_OVERLAY_LOCK (self);
self->silent = g_value_get_boolean (value);
if (self->silent_property) {
gboolean silent = self->silent;
if (self->silent_property_invert)
silent = !silent;
if (self->overlay)
g_object_set (self->overlay, self->silent_property, silent, NULL);
else if (self->renderer)
g_object_set (self->renderer, self->silent_property, silent, NULL);
} else {
gst_pad_set_blocked_async_full (self->subtitle_block_pad, TRUE,
_pad_blocked_cb, gst_object_ref (self),
(GDestroyNotify) gst_object_unref);
gst_pad_set_blocked_async_full (self->video_block_pad, TRUE,
_pad_blocked_cb, gst_object_ref (self),
(GDestroyNotify) gst_object_unref);
}
GST_SUBTITLE_OVERLAY_UNLOCK (self);
break;
case PROP_FONT_DESC:
GST_SUBTITLE_OVERLAY_LOCK (self);
g_free (self->font_desc);
@ -1298,13 +1386,20 @@ gst_subtitle_overlay_class_init (GstSubtitleOverlayClass * klass)
gobject_class->finalize = gst_subtitle_overlay_finalize;
gobject_class->set_property = gst_subtitle_overlay_set_property;
gobject_class->get_property = gst_subtitle_overlay_get_property;
g_object_class_install_property (gobject_class, PROP_SILENT,
g_param_spec_boolean ("silent",
"Silent",
"Whether to show subtitles", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_FONT_DESC,
g_param_spec_string ("font-desc",
"Subtitle font description",
"Pango font description of font "
"to be used for subtitle rendering", NULL,
G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
element_class->change_state =
GST_DEBUG_FUNCPTR (gst_subtitle_overlay_change_state);

5
gst/playback/gstsubtitleoverlay.h
View file

@ -60,8 +60,10 @@ struct _GstSubtitleOverlay
{
GstBin parent;
gboolean silent;
gchar *font_desc;
/* < private > */
gboolean do_async;
GstPad *srcpad;
@ -102,6 +104,9 @@ struct _GstSubtitleOverlay
GstElement *overlay;
GstElement *renderer;
const gchar *silent_property;
gboolean silent_property_invert;
};
struct _GstSubtitleOverlayClass