/* GStreamer interactive videoscale test * Copyright (C) 2008 Wim Taymans <wim.taymans@gmail.com> * * 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include <stdlib.h> #include <gst/gst.h> static GstElement * make_pipeline (gint type) { GstElement *result; gchar *pstr; switch (type) { case 0: pstr = g_strdup_printf ("videotestsrc ! capsfilter name=filter ! " "ximagesink"); break; case 1: pstr = g_strdup_printf ("videotestsrc ! queue ! capsfilter name=filter ! " "ximagesink"); break; case 2: pstr = g_strdup_printf ("videotestsrc ! videoscale ! " "capsfilter name=filter ! " "ximagesink"); break; case 3: pstr = g_strdup_printf ("videotestsrc ! queue ! videoscale ! " "capsfilter name=filter ! " "ximagesink"); break; case 4: pstr = g_strdup_printf ("videotestsrc ! videoscale ! queue ! " "capsfilter name=filter ! " "ximagesink"); break; case 5: pstr = g_strdup_printf ("v4l2src ! videoconvert ! videoscale ! " "capsfilter name=filter ! " "ximagesink"); break; default: return NULL; } result = gst_parse_launch_full (pstr, NULL, GST_PARSE_FLAG_NONE, NULL); g_print ("created test %d: \"%s\"\n", type, pstr); g_free (pstr); return result; } #define MAX_ROUND 100 int main (int argc, char **argv) { GstElement *pipe, *filter; GstCaps *caps; gint width, height; gint xdir, ydir; gint round, type, stop; gst_init (&argc, &argv); type = 0; stop = -1; if (argc > 1) { type = atoi (argv[1]); stop = type + 1; } while (TRUE) { GstMessage *message; pipe = make_pipeline (type); if (pipe == NULL) break; filter = gst_bin_get_by_name (GST_BIN (pipe), "filter"); g_assert (filter); width = 320; height = 240; xdir = ydir = -10; for (round = 0; round < MAX_ROUND; round++) { gchar *capsstr; g_print ("resize to %dx%d (%d/%d) \r", width, height, round, MAX_ROUND); /* we prefer our fixed width and height but allow other dimensions to pass * as well */ capsstr = g_strdup_printf ("video/x-raw, width=(int)%d, height=(int)%d;" "video/x-raw", width, height); caps = gst_caps_from_string (capsstr); g_free (capsstr); g_object_set (filter, "caps", caps, NULL); gst_caps_unref (caps); if (round == 0) gst_element_set_state (pipe, GST_STATE_PLAYING); width += xdir; if (width >= 320) xdir = -10; else if (width < 200) xdir = 10; height += ydir; if (height >= 240) ydir = -10; else if (height < 150) ydir = 10; message = gst_bus_poll (GST_ELEMENT_BUS (pipe), GST_MESSAGE_ERROR, 50 * GST_MSECOND); if (message) { g_print ("got error \n"); gst_message_unref (message); } } g_print ("test %d done \n", type); gst_object_unref (filter); gst_element_set_state (pipe, GST_STATE_NULL); gst_object_unref (pipe); type++; if (type == stop) break; } return 0; }