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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2005> Tim-Philipp Müller <tim@centricular.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gstclockoverlay.h>
#include <gst/video/video.h>
#include <time.h>
static GstElementDetails clock_overlay_details =
GST_ELEMENT_DETAILS ("Time Overlay",
"Filter/Editor/Video",
"Overlays the time on a video stream",
"Tim-Philipp Müller <tim@centricular.net>");
GST_BOILERPLATE (GstClockOverlay, gst_clock_overlay, GstTextOverlay,
GST_TYPE_TEXT_OVERLAY)
static void gst_clock_overlay_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (element_class, &clock_overlay_details);
}
static gchar *
gst_clock_overlay_render_time (GstClockOverlay * overlay)
{
struct tm t;
time_t now;
now = time (NULL);
if (localtime_r (&now, &t) == NULL)
return g_strdup ("--:--:--");
return g_strdup_printf ("%02u:%02u:%02u", t.tm_hour, t.tm_min, t.tm_sec);
}
static gchar *
gst_clock_overlay_get_text (GstTextOverlay * overlay, GstBuffer * video_frame)
{
gchar *time_str, *txt, *ret;
overlay->need_render = TRUE;
GST_OBJECT_LOCK (overlay);
txt = g_strdup (overlay->default_text);
GST_OBJECT_UNLOCK (overlay);
time_str = gst_clock_overlay_render_time (GST_CLOCK_OVERLAY (overlay));
if (txt != NULL && *txt != '\0') {
ret = g_strdup_printf ("%s %s", txt, time_str);
} else {
ret = time_str;
time_str = NULL;
}
g_free (txt);
g_free (time_str);
return ret;
}
static void
gst_clock_overlay_class_init (GstClockOverlayClass * klass)
{
GstTextOverlayClass *gsttextoverlay_class;
gsttextoverlay_class = (GstTextOverlayClass *) klass;
gsttextoverlay_class->get_text = gst_clock_overlay_get_text;
}
static void
gst_clock_overlay_init (GstClockOverlay * overlay, GstClockOverlayClass * klass)
{
PangoFontDescription *font_description;
GstTextOverlay *textoverlay;
PangoContext *context;
textoverlay = GST_TEXT_OVERLAY (overlay);
context = GST_TEXT_OVERLAY_CLASS (klass)->pango_context;
pango_context_set_language (context, pango_language_from_string ("en_US"));
pango_context_set_base_dir (context, PANGO_DIRECTION_LTR);
font_description = pango_font_description_new ();
pango_font_description_set_family (font_description, g_strdup ("Monospace"));
pango_font_description_set_style (font_description, PANGO_STYLE_NORMAL);
pango_font_description_set_variant (font_description, PANGO_VARIANT_NORMAL);
pango_font_description_set_weight (font_description, PANGO_WEIGHT_NORMAL);
pango_font_description_set_stretch (font_description, PANGO_STRETCH_NORMAL);
pango_font_description_set_size (font_description, 18 * PANGO_SCALE);
pango_context_set_font_description (context, font_description);
pango_font_description_free (font_description);
textoverlay->valign = GST_TEXT_OVERLAY_VALIGN_TOP;
textoverlay->halign = GST_TEXT_OVERLAY_HALIGN_LEFT;
}
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