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125 lines
3.8 KiB
C
125 lines
3.8 KiB
C
/* GStreamer interactive textoverlay test
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* Copyright (C) 2007 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 <gst/gst.h>
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static void
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set_enum_property_by_name (gpointer object, const gchar * prop,
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const gchar * value)
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{
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GParamSpec *pspec;
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GValue val = { 0, };
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GEnumClass *eclass;
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GEnumValue *eval;
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pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (object), prop);
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g_return_if_fail (pspec != NULL);
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g_value_init (&val, pspec->value_type);
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g_object_get_property (G_OBJECT (object), prop, &val);
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eclass = G_ENUM_CLASS (g_type_class_peek (G_VALUE_TYPE (&val)));
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g_return_if_fail (eclass != NULL);
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eval = g_enum_get_value_by_name (eclass, value);
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if (eval == NULL)
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eval = g_enum_get_value_by_nick (eclass, value);
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g_return_if_fail (eval != NULL);
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g_value_set_enum (&val, eval->value);
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g_object_set_property (G_OBJECT (object), prop, &val);
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g_value_unset (&val);
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}
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static void
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show_text (GstElement * textoverlay, const gchar * txt, const gchar * valign,
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const gchar * halign, const gchar * line_align)
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{
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GstElement *pipe;
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g_object_set (textoverlay, "text", txt, NULL);
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set_enum_property_by_name (textoverlay, "valignment", valign);
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set_enum_property_by_name (textoverlay, "halignment", halign);
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set_enum_property_by_name (textoverlay, "line-alignment", line_align);
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pipe = textoverlay;
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while (GST_ELEMENT_PARENT (pipe))
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pipe = GST_ELEMENT_PARENT (pipe);
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gst_element_set_state (pipe, GST_STATE_PLAYING);
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gst_bus_poll (GST_ELEMENT_BUS (pipe), GST_MESSAGE_ERROR, GST_SECOND);
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gst_element_set_state (pipe, GST_STATE_NULL);
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}
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static void
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test_textoverlay (int width, int height)
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{
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const gchar *valigns[] = { /* "baseline", */ "bottom", "top" };
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const gchar *haligns[] = { "left", "center", "right" };
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const gchar *linealigns[] = { "left", "center", "right" };
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GstElement *pipe, *toverlay;
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gchar *pstr;
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gint a, b, c;
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pstr = g_strdup_printf ("videotestsrc pattern=blue ! "
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"video/x-raw-yuv,width=%d,height=%d ! t.video_sink "
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"textoverlay name=t font-desc=\"Sans Serif, 20\" ! "
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" videoconvert ! videoscale ! autovideosink", width, height);
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pipe = gst_parse_launch_full (pstr, NULL, GST_PARSE_FLAG_NONE, NULL);
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g_assert (pipe);
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toverlay = gst_bin_get_by_name (GST_BIN (pipe), "t");
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g_assert (toverlay);
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g_object_set (toverlay, "xpad", 3, "ypad", 3, NULL);
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for (a = 0; a < G_N_ELEMENTS (valigns); ++a) {
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for (b = 0; b < G_N_ELEMENTS (haligns); ++b) {
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for (c = 0; c < G_N_ELEMENTS (linealigns); ++c) {
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gchar *s;
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s = g_strdup_printf ("line-alignment = %s\n"
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"<----- halignment = %s ----->\nvalignment = %s",
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linealigns[c], haligns[b], valigns[a]);
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show_text (toverlay, s, valigns[a], haligns[b], linealigns[c]);
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g_free (s);
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}
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}
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}
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g_free (pstr);
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}
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int
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main (int argc, char **argv)
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{
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gst_init (&argc, &argv);
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test_textoverlay (640, 480);
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g_print ("Now with odd width/height ...\n");
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test_textoverlay (639, 479);
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/* test_textoverlay (796, 256); */
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return 0;
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}
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