gstreamer/gst/debug/gstnavigationtest.c

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2003> David Schleef <ds@schleef.org>
*
* 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
/*#define DEBUG_ENABLED */
#include <gstnavigationtest.h>
#include <string.h>
#include <math.h>
/* GstNavigationtest signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0
/* FILL ME */
};
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 void gst_navigationtest_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_navigationtest_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
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 <ds@schleef.org>");
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)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (g_class);
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);
gobject_class->set_property = gst_navigationtest_set_property;
gobject_class->get_property = gst_navigationtest_get_property;
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 *navigationtest = GST_NAVIGATIONTEST (instance);
GstVideofilter *videofilter;
GST_DEBUG ("gst_navigationtest_init");
videofilter = GST_VIDEOFILTER (navigationtest);
gst_pad_set_event_function (videofilter->srcpad,
gst_navigationtest_handle_src_event);
navigationtest->x = -1;
navigationtest->y = -1;
}
static gboolean
gst_navigationtest_handle_src_event (GstPad * pad, GstEvent * event)
{
GstNavigationtest *navigationtest;
const gchar *type;
navigationtest = GST_NAVIGATIONTEST (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NAVIGATION:
type = gst_structure_get_string (event->event_data.structure.structure,
"event");
if (g_str_equal (type, "mouse-move")) {
gst_structure_get_double (event->event_data.structure.structure,
"pointer_x", &navigationtest->x);
gst_structure_get_double (event->event_data.structure.structure,
"pointer_y", &navigationtest->y);
} else if (g_str_equal (type, "mouse-button-press")) {
ButtonClick *click = g_new (ButtonClick, 1);
gst_structure_get_double (event->event_data.structure.structure,
"pointer_x", &click->x);
gst_structure_get_double (event->event_data.structure.structure,
"pointer_y", &click->y);
click->images_left = ceil (GST_VIDEOFILTER (navigationtest)->framerate);
/* green */
click->cy = 150;
click->cu = 46;
click->cv = 21;
navigationtest->clicks =
g_slist_prepend (navigationtest->clicks, click);
} else if (g_str_equal (type, "mouse-button-release")) {
ButtonClick *click = g_new (ButtonClick, 1);
gst_structure_get_double (event->event_data.structure.structure,
"pointer_x", &click->x);
gst_structure_get_double (event->event_data.structure.structure,
"pointer_y", &click->y);
click->images_left = ceil (GST_VIDEOFILTER (navigationtest)->framerate);
/* red */
click->cy = 76;
click->cu = 85;
click->cv = 255;
navigationtest->clicks =
g_slist_prepend (navigationtest->clicks, click);
}
break;
default:
break;
}
return gst_pad_event_default (pad, event);
}
static void
gst_navigationtest_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstNavigationtest *src;
g_return_if_fail (GST_IS_NAVIGATIONTEST (object));
src = GST_NAVIGATIONTEST (object);
GST_DEBUG ("gst_navigationtest_set_property");
switch (prop_id) {
#if 0
case ARG_METHOD:
src->method = g_value_get_enum (value);
break;
#endif
default:
break;
}
}
static void
gst_navigationtest_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstNavigationtest *src;
g_return_if_fail (GST_IS_NAVIGATIONTEST (object));
src = GST_NAVIGATIONTEST (object);
switch (prop_id) {
#if 0
case ARG_METHOD:
g_value_set_enum (value, src->method);
break;
#endif
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_library_load ("gstvideofilter"))
return FALSE;
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, GST_ORIGIN)
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 *navigationtest;
int width = gst_videofilter_get_input_width (videofilter);
int height = gst_videofilter_get_input_height (videofilter);
GSList *walk;
g_return_if_fail (GST_IS_NAVIGATIONTEST (videofilter));
navigationtest = GST_NAVIGATIONTEST (videofilter);
/* do something interesting here. This simply copies the source
* to the destination. */
memcpy (dest, src, width * height + (width / 2) * (height / 2) * 2);
walk = navigationtest->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) {
navigationtest->clicks = g_slist_remove (navigationtest->clicks, click);
g_free (click);
}
}
draw_box_planar411 (dest, width, height, rint (navigationtest->x),
rint (navigationtest->y), 0, 128, 128);
}
static GstStateChangeReturn
gst_navigationtest_change_state (GstElement * element,
GstStateChange transition)
{
GstNavigationtest *navigation = GST_NAVIGATIONTEST (element);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
while (navigation->clicks) {
g_free (navigation->clicks->data);
navigation->clicks =
g_slist_remove (navigation->clicks, navigation->clicks->data);
}
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
return GST_STATE_CHANGE_SUCCESS;
}