Fawkes API Fawkes Development Version
fuse_viewer_gui.cpp
1
2/***************************************************************************
3 * fuse_viewer_gui.cpp - Fuse (network camera) Viewer Gui
4 *
5 * Created: Thu Dec 18 14:16:23 2008
6 * Copyright 2008-2009 Christof Rath <c.rath@student.tugraz.at>
7 *
8 ****************************************************************************/
9
10/* This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU Library General Public License for more details.
19 *
20 * Read the full text in the LICENSE.GPL file in the doc directory.
21 */
22
23#include "fuse_viewer_gui.h"
24
25#include <core/exception.h>
26#include <fvcams/net.h>
27#include <fvwidgets/fuse_image_list_widget.h>
28#include <fvwidgets/image_widget.h>
29#include <gui_utils/avahi_dispatcher.h>
30
31#include <cstring>
32
33using namespace fawkes;
34using namespace firevision;
35
36/** @class FuseViewerGtkWindow "fuse_viewer_gui.h"
37 * Fawkes network camera viewer.
38 *
39 * Currently the image refreshes 300ms after the retrieval and display of the
40 * last refresh (e.g. every 300ms in an ideal system)
41 * The FUSE list doesn't get updated (due to a bug?), restarting the fvfountain
42 * plugin on the remote host does the job.
43 *
44 * @author Christof Rath
45 */
46
47/** Constructor.
48 * @param cobject C base object
49 * @param builder Gtk::Builder
50 */
52 const Glib::RefPtr<Gtk::Builder> builder)
53: Gtk::Window(cobject)
54{
55 builder->get_widget("swFuseList", image_list_scroll_);
56 builder->get_widget("vpImage", image_viewport_);
57 builder->get_widget("afSaveType", save_box_);
58 builder->get_widget("fcbSaveTo", save_filechooser_);
59 builder->get_widget("cbtAutoSave", auto_save_);
60 builder->get_widget("btSaveImage", save_btn_);
61 builder->get_widget("stb", statusbar_);
62
63 img_list_widget_ = Gtk::manage(new FuseImageListWidget());
64 img_list_widget_->image_selected().connect(
65 sigc::mem_fun(*this, &FuseViewerGtkWindow::on_fuse_image_selected));
66 // img_list_widget_->set_auto_update(true, 1);
67 image_list_scroll_->add(*img_list_widget_);
68
69 save_type_ = Gtk::manage(new Gtk::ComboBoxText);
70 save_box_->add(*save_type_);
71
72 std::vector<Gdk::PixbufFormat> fmts = Gdk::Pixbuf::get_formats();
73 std::vector<Gdk::PixbufFormat>::const_iterator it = fmts.begin();
74#if GTK_VERSION_GE(3, 0)
75 save_type_->append("Don't save");
76#else
77 save_type_->append_text("Don't save");
78#endif
79 for (; it != fmts.end(); ++it) {
80 if ((*it).is_writable()) {
81#if GTK_VERSION_GE(3, 0)
82 save_type_->append((*it).get_name());
83#else
84 save_type_->append_text((*it).get_name());
85#endif
86 }
87 }
88
89 save_type_->set_active(0);
90 save_type_->set_sensitive(false);
91 save_type_->signal_changed().connect(
92 sigc::mem_fun(*this, &FuseViewerGtkWindow::on_save_type_change));
93 auto_save_->signal_toggled().connect(
94 sigc::mem_fun(*this, &FuseViewerGtkWindow::on_auto_save_cbt_change));
95 save_btn_->signal_clicked().connect(
96 sigc::mem_fun(*this, &FuseViewerGtkWindow::on_save_image_clicked));
97 show_all_children();
98
99 cur_service_name_ = "";
100 img_num_ = 0;
101 img_widget_ = NULL;
102 cam_ = NULL;
103
104 set_status("");
105
106 avahi_thread_ = new AvahiThread();
107 avahi_dispatcher_ = new AvahiDispatcher;
108
109 avahi_dispatcher_->signal_service_added().connect(
110 sigc::mem_fun(*this, &FuseViewerGtkWindow::on_service_added));
111 avahi_dispatcher_->signal_service_removed().connect(
112 sigc::mem_fun(*this, &FuseViewerGtkWindow::on_service_removed));
113
114 avahi_thread_->watch_service("_fountain._tcp", avahi_dispatcher_);
115 avahi_thread_->start();
116}
117
118/** Destructor. */
120{
121 delete avahi_thread_;
122 delete avahi_dispatcher_;
123}
124
125/** Signal handler called after AvahiThread detects a new NetworkService */
126void
127FuseViewerGtkWindow::on_service_added(fawkes::NetworkService *service)
128{
129 const char *name = service->name();
130 const char *host = service->host();
131
132 host_service_map_[host] = name;
133 img_list_widget_->add_fountain_service(name, host, service->port());
134}
135
136/** Signal handler called after AvahiThread detects a NetworkService removal */
137void
138FuseViewerGtkWindow::on_service_removed(fawkes::NetworkService *service)
139{
140 img_list_widget_->remove_fountain_service(service->name());
141
142 if (cur_service_name_ == service->name()) {
143 close_image();
144 }
145
146 std::map<std::string, std::string>::const_iterator it = host_service_map_.begin();
147 for (; it != host_service_map_.end(); ++it) {
148 if (cur_service_name_ == it->second) {
149 host_service_map_.erase(it->first);
150 break;
151 }
152 }
153}
154
155/** Signal handler that is called when an image is selected in the image list */
156void
157FuseViewerGtkWindow::on_fuse_image_selected()
158{
159 img_list_widget_->set_sensitive(false);
160 std::string host;
161 unsigned short port;
162 std::string image_id;
163 bool compression;
164
165 img_list_widget_->get_selected_image(host, port, image_id, compression);
166
167 close_image();
168
169 try {
170 cam_ = new NetworkCamera(host.c_str(), port, image_id.c_str(), compression);
171 cam_->open();
172 cam_->start();
173 cur_service_name_ = host_service_map_[host];
174
175 img_widget_ = new ImageWidget(cam_, 300);
176 image_viewport_->add(*img_widget_);
177 image_viewport_->set_size_request(cam_->pixel_width(), cam_->pixel_height());
178 show_all_children();
179 save_type_->set_sensitive(true);
180
181 set_status(image_id, host, port);
182 } catch (Exception &e) {
183 cam_ = NULL;
184 e.print_trace();
185 }
186
187 img_list_widget_->set_sensitive(true);
188}
189
190/** Signal handler that is called if the 'Auto save' checkbox status changes */
191void
192FuseViewerGtkWindow::on_auto_save_cbt_change()
193{
194 if (auto_save_->get_active()) {
195 save_btn_->set_sensitive(false);
196
197 img_widget_->save_on_refresh_cam(true,
198 save_filechooser_->get_current_folder(),
199 save_type_->get_active_text(),
200 img_num_);
201 } else {
202 img_widget_->save_on_refresh_cam(false);
203 img_num_ = img_widget_->get_image_num();
204
205 save_btn_->set_sensitive(true);
206 }
207}
208
209/** Signal handler that is called when the fileformat to save images changes */
210void
211FuseViewerGtkWindow::on_save_type_change()
212{
213 if (save_type_->get_active_row_number()) {
214 auto_save_->set_sensitive(true);
215
216 if (auto_save_->get_active())
217 img_num_ = img_widget_->get_image_num();
218 on_auto_save_cbt_change();
219 } else {
220 auto_save_->set_active(false);
221 auto_save_->set_sensitive(false);
222 save_btn_->set_sensitive(false);
223 }
224}
225
226/** Signal handler that is called when the 'Save image' button is pressed */
227void
228FuseViewerGtkWindow::on_save_image_clicked()
229{
230 char *ctmp;
231 if (asprintf(&ctmp,
232 "%s/%06u.%s",
233 save_filechooser_->get_current_folder().c_str(),
234 ++img_num_,
235 save_type_->get_active_text().c_str())
236 != -1) {
237 Glib::ustring fn = ctmp;
238 free(ctmp);
239
240 img_widget_->save_image(fn, save_type_->get_active_text());
241 } else {
242 printf("Could not save file, asprintf() ran out of memory");
243 }
244}
245
246/**
247 * Sets the current status (to the statusbar)
248 * @param img_id the id of the current selected image
249 * @param host the host that provides the image
250 * @param port the port to transfer the image
251 */
252void
253FuseViewerGtkWindow::set_status(std::string img_id, std::string host, unsigned short port)
254{
255 if (!img_id.length()) {
256 statusbar_->push(Glib::ustring("Not connected."));
257 } else {
258 char *ctmp = NULL;
259 if (asprintf(&ctmp, "Host: %s:%u\tId: %s", host.c_str(), port, img_id.c_str())) {
260 statusbar_->push(Glib::ustring(ctmp));
261 free(ctmp);
262 }
263 }
264}
265
266/** Closes the image and the camera */
267void
268FuseViewerGtkWindow::close_image()
269{
270 if (img_widget_) {
271 image_viewport_->remove();
272 delete img_widget_;
273 img_widget_ = NULL;
274 save_type_->set_sensitive(false);
275 }
276
277 if (cam_) {
278 cam_->stop();
279 cam_->close();
280 delete cam_;
281 cam_ = NULL;
282 }
283
284 set_status("");
285}
virtual ~FuseViewerGtkWindow()
Destructor.
FuseViewerGtkWindow(BaseObjectType *cobject, const Glib::RefPtr< Gtk::Builder > builder)
Constructor.
sigc::signal< void, NetworkService * > signal_service_removed()
Get "service remove" signal.
sigc::signal< void, NetworkService * > signal_service_added()
Get "service added" signal.
Avahi main thread.
Definition: avahi_thread.h:55
void watch_service(const char *service_type, ServiceBrowseHandler *h)
Add a result handler.
Base class for exceptions in Fawkes.
Definition: exception.h:36
void print_trace() noexcept
Prints trace to stderr.
Definition: exception.cpp:601
Representation of a service announced or found via service discovery (i.e.
Definition: service.h:38
unsigned short int port() const
Get port of service.
Definition: service.cpp:410
const char * name() const
Get name of service.
Definition: service.cpp:349
const char * host() const
Get host of service.
Definition: service.cpp:401
void start(bool wait=true)
Call this method to start the thread.
Definition: thread.cpp:499
This widget displays all available Fuse images in a tree view.
bool get_selected_image(std::string &host_name, unsigned short &port, std::string &image_id, bool &compression)
Get the host name, port, and image id of the selected image.
void add_fountain_service(const char *name, const char *host_name, uint32_t port)
Call this method when new Fountain services are discovered.
Glib::Dispatcher & image_selected()
Access the Dispatcher that is signalled when a new image is selected in the list of images.
void remove_fountain_service(const char *name)
Call this method when a Fountain service vanishes.
This class is an image container to display fawkes cameras (or image buffers) inside a Gtk::Container...
Definition: image_widget.h:43
unsigned int get_image_num()
Returns the latest image number.
bool save_image(std::string filename, Glib::ustring type) const noexcept
Saves the current content of the Image.
void save_on_refresh_cam(bool enabled, std::string path="", Glib::ustring type="", unsigned int img_num=0)
Saves the content of the image on every refresh.
Network camera.
Definition: net.h:41
virtual void open()
Open the camera.
Definition: net.cpp:188
virtual unsigned int pixel_height()
Height of image in pixels.
Definition: net.cpp:342
virtual void stop()
Stop image transfer from the camera.
Definition: net.cpp:218
virtual void start()
Start image transfer from the camera.
Definition: net.cpp:212
virtual void close()
Close camera.
Definition: net.cpp:302
virtual unsigned int pixel_width()
Width of image in pixels.
Definition: net.cpp:332
Fawkes library namespace.