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Original commit message from CVS: * configure.ac: * ext/Makefile.am: * ext/pango/Makefile.am: * ext/pango/gstclockoverlay.c: (gst_clock_overlay_base_init), (gst_clock_overlay_render_time), (gst_clock_overlay_get_text), (gst_clock_overlay_class_init), (gst_clock_overlay_init): * ext/pango/gstclockoverlay.h: * ext/pango/gsttextoverlay.c: (gst_text_overlay_base_init), (gst_text_overlay_get_text), (gst_text_overlay_class_init), (gst_text_overlay_finalize), (gst_text_overlay_init), (gst_text_overlay_update_wrap_mode), (gst_text_overlay_setcaps), (gst_text_overlay_text_pad_linked), (gst_text_overlay_text_pad_unlinked), (gst_text_overlay_set_property), (gst_text_overlay_getcaps), (gst_text_overlay_shade_y), (gst_text_overlay_blit_yuv420), (gst_text_overlay_resize_bitmap), (gst_text_overlay_render_text), (gst_text_overlay_push_frame), (gst_text_overlay_pop_video), (gst_text_overlay_pop_text), (gst_text_overlay_collected), (gst_text_overlay_change_state), (plugin_init): * ext/pango/gsttextoverlay.h: * ext/pango/gsttimeoverlay.c: (gst_time_overlay_base_init), (gst_time_overlay_render_time), (gst_time_overlay_get_text), (gst_time_overlay_class_init), (gst_time_overlay_init): * ext/pango/gsttimeoverlay.h: Port pango-based textoverlay, timeoverlay and textrender to 0.9 and add background shading and text wrapping modes. Make timoverlay derive from textoverlay. Also add new clockoverlay element.
119 lines
3.7 KiB
C
119 lines
3.7 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2005> Tim-Philipp Müller <tim@centricular.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gstclockoverlay.h>
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#include <gst/video/video.h>
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#include <time.h>
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static GstElementDetails clock_overlay_details =
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GST_ELEMENT_DETAILS ("Time Overlay",
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"Filter/Editor/Video",
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"Overlays the time on a video stream",
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"Tim-Philipp Müller <tim@centricular.net>");
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GST_BOILERPLATE (GstClockOverlay, gst_clock_overlay, GstTextOverlay,
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GST_TYPE_TEXT_OVERLAY)
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static void gst_clock_overlay_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_set_details (element_class, &clock_overlay_details);
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}
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static gchar *
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gst_clock_overlay_render_time (GstClockOverlay * overlay)
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{
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struct tm t;
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time_t now;
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now = time (NULL);
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if (localtime_r (&now, &t) == NULL)
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return g_strdup ("--:--:--");
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return g_strdup_printf ("%02u:%02u:%02u", t.tm_hour, t.tm_min, t.tm_sec);
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}
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static gchar *
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gst_clock_overlay_get_text (GstTextOverlay * overlay, GstBuffer * video_frame)
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{
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gchar *time_str, *txt, *ret;
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overlay->need_render = TRUE;
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GST_OBJECT_LOCK (overlay);
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txt = g_strdup (overlay->default_text);
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GST_OBJECT_UNLOCK (overlay);
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time_str = gst_clock_overlay_render_time (GST_CLOCK_OVERLAY (overlay));
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if (txt != NULL && *txt != '\0') {
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ret = g_strdup_printf ("%s %s", txt, time_str);
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} else {
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ret = time_str;
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time_str = NULL;
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}
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g_free (txt);
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g_free (time_str);
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return ret;
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}
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static void
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gst_clock_overlay_class_init (GstClockOverlayClass * klass)
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{
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GstTextOverlayClass *gsttextoverlay_class;
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gsttextoverlay_class = (GstTextOverlayClass *) klass;
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gsttextoverlay_class->get_text = gst_clock_overlay_get_text;
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}
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static void
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gst_clock_overlay_init (GstClockOverlay * overlay, GstClockOverlayClass * klass)
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{
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PangoFontDescription *font_description;
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GstTextOverlay *textoverlay;
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PangoContext *context;
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textoverlay = GST_TEXT_OVERLAY (overlay);
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context = GST_TEXT_OVERLAY_CLASS (klass)->pango_context;
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pango_context_set_language (context, pango_language_from_string ("en_US"));
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pango_context_set_base_dir (context, PANGO_DIRECTION_LTR);
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font_description = pango_font_description_new ();
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pango_font_description_set_family (font_description, g_strdup ("Monospace"));
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pango_font_description_set_style (font_description, PANGO_STYLE_NORMAL);
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pango_font_description_set_variant (font_description, PANGO_VARIANT_NORMAL);
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pango_font_description_set_weight (font_description, PANGO_WEIGHT_NORMAL);
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pango_font_description_set_stretch (font_description, PANGO_STRETCH_NORMAL);
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pango_font_description_set_size (font_description, 18 * PANGO_SCALE);
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pango_context_set_font_description (context, font_description);
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pango_font_description_free (font_description);
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textoverlay->valign = GST_TEXT_OVERLAY_VALIGN_TOP;
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textoverlay->halign = GST_TEXT_OVERLAY_HALIGN_LEFT;
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}
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