/* GStreamer * Copyright (C) <1999> Erik Walthinsen * Copyright (C) <2003> David Schleef * * 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. */ /* * This file was (probably) generated from gstnavigationtest.c, * gstnavigationtest.c,v 1.7 2003/11/08 02:48:59 dschleef Exp */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include typedef struct { double x; double y; gint images_left; guint8 cy, cu, cv; } ButtonClick; static void gst_navigationtest_base_init (gpointer g_class); static void gst_navigationtest_class_init (gpointer g_class, gpointer class_data); static void gst_navigationtest_init (GTypeInstance * instance, gpointer g_class); static gboolean gst_navigationtest_handle_src_event (GstPad * pad, GstEvent * event); static GstStateChangeReturn gst_navigationtest_change_state (GstElement * element, GstStateChange transition); static void gst_navigationtest_planar411 (GstVideofilter * videofilter, void *dest, void *src); static void gst_navigationtest_setup (GstVideofilter * videofilter); static GstVideofilterClass *parent_class; /* NULL */ GType gst_navigationtest_get_type (void) { static GType navigationtest_type = 0; if (!navigationtest_type) { static const GTypeInfo navigationtest_info = { sizeof (GstNavigationtestClass), gst_navigationtest_base_init, NULL, gst_navigationtest_class_init, NULL, NULL, sizeof (GstNavigationtest), 0, gst_navigationtest_init, }; navigationtest_type = g_type_register_static (GST_TYPE_VIDEOFILTER, "GstNavigationtest", &navigationtest_info, 0); } return navigationtest_type; } static GstVideofilterFormat gst_navigationtest_formats[] = { {"I420", 12, gst_navigationtest_planar411,}, }; static void gst_navigationtest_base_init (gpointer g_class) { static GstElementDetails navigationtest_details = GST_ELEMENT_DETAILS ("Video Filter Template", "Filter/Video", "Template for a video filter", "David Schleef "); GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); GstVideofilterClass *videofilter_class = GST_VIDEOFILTER_CLASS (g_class); int i; gst_element_class_set_details (element_class, &navigationtest_details); for (i = 0; i < G_N_ELEMENTS (gst_navigationtest_formats); i++) { gst_videofilter_class_add_format (videofilter_class, gst_navigationtest_formats + i); } gst_videofilter_class_add_pad_templates (GST_VIDEOFILTER_CLASS (g_class)); } static void gst_navigationtest_class_init (gpointer g_class, gpointer class_data) { GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); GstVideofilterClass *videofilter_class = GST_VIDEOFILTER_CLASS (g_class); parent_class = g_type_class_peek_parent (g_class); element_class->change_state = gst_navigationtest_change_state; videofilter_class->setup = gst_navigationtest_setup; } static void gst_navigationtest_init (GTypeInstance * instance, gpointer g_class) { GstNavigationtest *navtest = GST_NAVIGATIONTEST (instance); GstVideofilter *videofilter = GST_VIDEOFILTER (navtest); gst_pad_set_event_function (videofilter->srcpad, GST_DEBUG_FUNCPTR (gst_navigationtest_handle_src_event)); navtest->x = -1; navtest->y = -1; } static gboolean gst_navigationtest_handle_src_event (GstPad * pad, GstEvent * event) { GstNavigationtest *navtest; const gchar *type; navtest = GST_NAVIGATIONTEST (GST_PAD_PARENT (pad)); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_NAVIGATION: { const GstStructure *s = gst_event_get_structure (event); gint fps_n, fps_d; fps_n = gst_value_get_fraction_numerator ( (&GST_VIDEOFILTER (navtest)->framerate)); fps_d = gst_value_get_fraction_denominator ( (&GST_VIDEOFILTER (navtest)->framerate)); type = gst_structure_get_string (s, "event"); if (g_str_equal (type, "mouse-move")) { gst_structure_get_double (s, "pointer_x", &navtest->x); gst_structure_get_double (s, "pointer_y", &navtest->y); } else if (g_str_equal (type, "mouse-button-press")) { ButtonClick *click = g_new (ButtonClick, 1); gst_structure_get_double (s, "pointer_x", &click->x); gst_structure_get_double (s, "pointer_y", &click->y); click->images_left = (fps_n + fps_d - 1) / fps_d; /* green */ click->cy = 150; click->cu = 46; click->cv = 21; navtest->clicks = g_slist_prepend (navtest->clicks, click); } else if (g_str_equal (type, "mouse-button-release")) { ButtonClick *click = g_new (ButtonClick, 1); gst_structure_get_double (s, "pointer_x", &click->x); gst_structure_get_double (s, "pointer_y", &click->y); click->images_left = (fps_n + fps_d - 1) / fps_d; /* red */ click->cy = 76; click->cu = 85; click->cv = 255; navtest->clicks = g_slist_prepend (navtest->clicks, click); } break; } default: break; } return gst_pad_event_default (pad, event); } static void gst_navigationtest_setup (GstVideofilter * videofilter) { GstNavigationtest *navigationtest; g_return_if_fail (GST_IS_NAVIGATIONTEST (videofilter)); navigationtest = GST_NAVIGATIONTEST (videofilter); /* if any setup needs to be done, do it here */ } static void draw_box_planar411 (guint8 * dest, int width, int height, int x, int y, guint8 colory, guint8 coloru, guint8 colorv) { int x1, x2, y1, y2; if (x < 0 || y < 0 || x >= width || y >= height) return; x1 = MAX (x - 5, 0); x2 = MIN (x + 5, width); y1 = MAX (y - 5, 0); y2 = MIN (y + 5, height); for (y = y1; y < y2; y++) { for (x = x1; x < x2; x++) { ((guint8 *) dest)[y * width + x] = colory; } } dest += height * width; width /= 2; height /= 2; x1 /= 2; x2 /= 2; y1 /= 2; y2 /= 2; for (y = y1; y < y2; y++) { for (x = x1; x < x2; x++) { ((guint8 *) dest)[y * width + x] = coloru; } } dest += height * width; for (y = y1; y < y2; y++) { for (x = x1; x < x2; x++) { ((guint8 *) dest)[y * width + x] = colorv; } } } static void gst_navigationtest_planar411 (GstVideofilter * videofilter, void *dest, void *src) { GstNavigationtest *navtest = (GstNavigationtest *) videofilter; gint width, height; GSList *walk; g_return_if_fail (GST_IS_NAVIGATIONTEST (videofilter)); width = gst_videofilter_get_input_width (videofilter); height = gst_videofilter_get_input_height (videofilter); /* do something interesting here. This simply copies the source * to the destination. */ memcpy (dest, src, width * height + (width / 2) * (height / 2) * 2); walk = navtest->clicks; while (walk) { ButtonClick *click = walk->data; walk = g_slist_next (walk); draw_box_planar411 (dest, width, height, rint (click->x), rint (click->y), click->cy, click->cu, click->cv); if (--click->images_left < 1) { navtest->clicks = g_slist_remove (navtest->clicks, click); g_free (click); } } draw_box_planar411 (dest, width, height, rint (navtest->x), rint (navtest->y), 0, 128, 128); } static GstStateChangeReturn gst_navigationtest_change_state (GstElement * element, GstStateChange transition) { GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; GstNavigationtest *navtest = GST_NAVIGATIONTEST (element); /* upwards state changes */ switch (transition) { default: break; } if (GST_ELEMENT_CLASS (parent_class)->change_state) ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); /* downwards state changes */ switch (transition) { case GST_STATE_CHANGE_PAUSED_TO_READY: { g_slist_foreach (navtest->clicks, (GFunc) g_free, NULL); g_slist_free (navtest->clicks); navtest->clicks = NULL; break; } default: break; } return ret; } static gboolean plugin_init (GstPlugin * plugin) { return gst_element_register (plugin, "navigationtest", GST_RANK_NONE, GST_TYPE_NAVIGATIONTEST); } GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, "navigationtest", "Template for a video filter", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)