1 // Copyright 2005 Ben Hutchings <ben@decadentplace.org.uk>.
2 // See the file "COPYING" for licence details.
18 #include <boost/shared_ptr.hpp>
20 #include <gdkmm/pixbuf.h>
21 #include <glibmm/convert.h>
22 #include <glibmm/spawn.h>
23 #include <gtkmm/main.h>
24 #include <gtkmm/window.h>
26 #include <imglib2/ImageErrors.h>
27 #include <nsGUIEvent.h>
28 #include <nsIBoxObject.h>
29 #include <nsIContent.h>
30 #include <nsIDocShell.h>
31 #include <nsIDOMAbstractView.h>
32 #include <nsIDOMBarProp.h>
33 #include <nsIDOMDocumentEvent.h>
34 #include <nsIDOMDocumentView.h>
35 #include <nsIDOMElement.h>
36 #include <nsIDOMEventTarget.h>
37 #include <nsIDOMHTMLDocument.h>
38 #include <nsIDOMMouseEvent.h>
39 #include <nsIDOMNSDocument.h>
40 #include <nsIDOMWindow.h>
41 #include <nsIEventStateManager.h>
42 #include <nsIInterfaceRequestorUtils.h>
43 #include <nsIURI.h> // required before nsILink.h
45 #include <nsIPresContext.h>
46 #include <nsIPresShell.h>
47 #include <nsIWebBrowser.h>
50 #include "browserwidget.hpp"
51 #include "childiterator.hpp"
53 #include "framebuffer.hpp"
54 #include "linkiterator.hpp"
55 #include "pixbufs.hpp"
56 #include "stylesheets.hpp"
57 #include "temp_file.hpp"
59 #include "xpcom_support.hpp"
61 using xpcom_support::check;
67 int left, top; // inclusive
68 int right, bottom; // exclusive
70 rectangle operator|=(const rectangle & other)
74 // use current extents unchanged
83 // find rectangle enclosing both extents
84 left = std::min(left, other.left);
85 top = std::min(top, other.top);
86 right = std::max(right, other.right);
87 bottom = std::max(bottom, other.bottom);
93 rectangle operator&=(const rectangle & other)
95 // find rectangle enclosed in both extents
96 left = std::max(left, other.left);
97 top = std::max(top, other.top);
98 right = std::max(left, std::min(right, other.right));
99 bottom = std::max(top, std::min(bottom, other.bottom));
105 return left == right || bottom == top;
109 rectangle get_elem_rect(nsIDOMNSDocument * ns_doc,
110 nsIDOMElement * elem)
114 // Start with this element's bounding box
115 nsCOMPtr<nsIBoxObject> box;
116 check(ns_doc->GetBoxObjectFor(elem, getter_AddRefs(box)));
118 check(box->GetScreenX(&result.left));
119 check(box->GetScreenY(&result.top));
120 check(box->GetWidth(&width));
121 check(box->GetHeight(&height));
122 result.right = result.left + width;
123 result.bottom = result.top + height;
125 // Merge bounding boxes of all child elements
126 for (ChildIterator it = ChildIterator(elem), end; it != end; ++it)
128 nsCOMPtr<nsIDOMNode> child_node(*it);
130 if (check(child_node->GetNodeType(&child_type)),
131 child_type == nsIDOMNode::ELEMENT_NODE)
133 nsCOMPtr<nsIDOMElement> child_elem(
134 do_QueryInterface(child_node));
135 result |= get_elem_rect(ns_doc, child_elem);
142 class WebDvdWindow : public Gtk::Window
146 const video::frame_params & frame_params,
147 const std::string & main_page_uri,
148 const std::string & output_dir);
151 void add_page(const std::string & uri);
152 void add_video(const std::string & uri);
153 void load_next_page();
154 void on_net_state_change(const char * uri, gint flags, guint status);
156 void save_screenshot();
157 void process_links(nsIPresShell * pres_shell,
158 nsIPresContext * pres_context,
159 nsIDOMWindow * dom_window);
162 enum ResourceType { page_resource, video_resource };
163 typedef std::pair<ResourceType, int> ResourceEntry;
164 video::frame_params frame_params_;
165 std::string output_dir_;
166 BrowserWidget browser_widget_;
167 nsCOMPtr<nsIStyleSheet> stylesheet_;
168 std::queue<std::string> page_queue_;
169 std::map<std::string, ResourceEntry> resource_map_;
170 std::vector<std::vector<std::string> > page_links_;
171 std::vector<std::string> video_paths_;
172 bool pending_window_update_;
173 int pending_req_count_;
174 bool have_tweaked_page_;
175 std::auto_ptr<temp_file> background_temp_;
177 std::auto_ptr<page_state> page_state_;
178 std::vector<boost::shared_ptr<temp_file> > page_temp_files_;
181 WebDvdWindow::WebDvdWindow(
182 const video::frame_params & frame_params,
183 const std::string & main_page_uri,
184 const std::string & output_dir)
185 : frame_params_(frame_params),
186 output_dir_(output_dir),
187 stylesheet_(load_css("file://" WEBDVD_LIB_DIR "/webdvd.css")),
188 pending_window_update_(false),
189 pending_req_count_(0),
190 have_tweaked_page_(false)
192 set_size_request(frame_params_.width, frame_params_.height);
193 set_resizable(false);
195 add(browser_widget_);
196 browser_widget_.show();
197 browser_widget_.signal_net_state().connect(
198 SigC::slot(*this, &WebDvdWindow::on_net_state_change));
200 add_page(main_page_uri);
204 void WebDvdWindow::add_page(const std::string & uri)
206 if (resource_map_.insert(
207 std::make_pair(uri, ResourceEntry(page_resource, 0)))
210 page_queue_.push(uri);
214 void WebDvdWindow::add_video(const std::string & uri)
216 if (resource_map_.insert(
217 std::make_pair(uri, ResourceEntry(video_resource,
218 video_paths_.size() + 1)))
221 Glib::ustring hostname;
222 std::string filename(Glib::filename_from_uri(uri, hostname));
223 // FIXME: Should check the hostname
224 if (!Glib::file_test(filename, Glib::FILE_TEST_IS_REGULAR))
225 throw std::runtime_error(
226 filename + " is missing or not a regular file");
227 video_paths_.push_back(filename);
231 void WebDvdWindow::load_next_page()
233 assert(!page_queue_.empty());
234 const std::string & uri = page_queue_.front();
235 std::cout << "loading " << uri << std::endl;
237 std::size_t page_count = page_links_.size();
238 resource_map_[uri].second = ++page_count;
239 page_links_.resize(page_count);
241 browser_widget_.load_uri(uri);
244 void WebDvdWindow::on_net_state_change(const char * uri,
245 gint flags, guint status)
247 # ifdef DEBUG_ON_NET_STATE_CHANGE
248 std::cout << "WebDvdWindow::on_net_state_change(";
250 std::cout << '"' << uri << '"';
255 gint flags_left = flags;
256 static const struct {
260 { GTK_MOZ_EMBED_FLAG_START, "STATE_START" },
261 { GTK_MOZ_EMBED_FLAG_REDIRECTING, "STATE_REDIRECTING" },
262 { GTK_MOZ_EMBED_FLAG_TRANSFERRING, "STATE_TRANSFERRING" },
263 { GTK_MOZ_EMBED_FLAG_NEGOTIATING, "STATE_NEGOTIATING" },
264 { GTK_MOZ_EMBED_FLAG_STOP, "STATE_STOP" },
265 { GTK_MOZ_EMBED_FLAG_IS_REQUEST, "STATE_IS_REQUEST" },
266 { GTK_MOZ_EMBED_FLAG_IS_DOCUMENT, "STATE_IS_DOCUMENT" },
267 { GTK_MOZ_EMBED_FLAG_IS_NETWORK, "STATE_IS_NETWORK" },
268 { GTK_MOZ_EMBED_FLAG_IS_WINDOW, "STATE_IS_WINDOW" }
270 for (int i = 0; i != sizeof(flag_names)/sizeof(flag_names[0]); ++i)
272 if (flags & flag_names[i].value)
274 std::cout << flag_names[i].name;
275 flags_left -= flag_names[i].value;
281 std::cout << "0x" << std::setbase(16) << flags_left;
283 std::cout << ", " << "0x" << std::setbase(16) << status << ")\n";
284 # endif // DEBUG_ON_NET_STATE_CHANGE
286 if (flags & GTK_MOZ_EMBED_FLAG_IS_REQUEST)
288 if (flags & GTK_MOZ_EMBED_FLAG_START)
289 ++pending_req_count_;
291 if (flags & GTK_MOZ_EMBED_FLAG_STOP)
293 assert(pending_req_count_ != 0);
294 --pending_req_count_;
298 if (flags & GTK_MOZ_EMBED_FLAG_IS_DOCUMENT
299 && flags & GTK_MOZ_EMBED_FLAG_START)
301 pending_window_update_ = true;
302 have_tweaked_page_ = false;
305 if (flags & GTK_MOZ_EMBED_FLAG_IS_WINDOW
306 && flags & GTK_MOZ_EMBED_FLAG_STOP)
308 // Check whether the load was successful, ignoring this
310 if (status != NS_IMAGELIB_ERROR_LOAD_ABORTED)
313 pending_window_update_ = false;
316 if (pending_req_count_ == 0 && !pending_window_update_)
323 catch (std::exception & e)
325 std::cerr << "Fatal error";
326 if (!page_queue_.empty())
327 std::cerr << " while processing <" << page_queue_.front()
329 std::cerr << ": " << e.what() << "\n";
335 bool WebDvdWindow::process_page()
337 assert(!page_queue_.empty());
339 nsCOMPtr<nsIWebBrowser> browser(browser_widget_.get_browser());
340 nsCOMPtr<nsIDocShell> doc_shell(do_GetInterface(browser));
342 nsCOMPtr<nsIPresShell> pres_shell;
343 check(doc_shell->GetPresShell(getter_AddRefs(pres_shell)));
344 nsCOMPtr<nsIPresContext> pres_context;
345 check(doc_shell->GetPresContext(getter_AddRefs(pres_context)));
346 nsCOMPtr<nsIDOMWindow> dom_window;
347 check(browser->GetContentDOMWindow(getter_AddRefs(dom_window)));
349 // If we haven't done so already, apply the stylesheet and
350 // disable scrollbars.
351 if (!have_tweaked_page_)
353 apply_style_sheet(stylesheet_, pres_shell);
355 // This actually only needs to be done once.
356 nsCOMPtr<nsIDOMBarProp> dom_bar_prop;
357 check(dom_window->GetScrollbars(getter_AddRefs(dom_bar_prop)));
358 check(dom_bar_prop->SetVisible(false));
360 have_tweaked_page_ = true;
362 // Might need to wait a while for things to load or more
363 // likely for a re-layout.
364 if (pending_req_count_ > 0)
368 // All further work should only be done if we're not in preview mode.
369 if (!output_dir_.empty())
371 // If we haven't already started work on this page, save a
372 // screenshot of its normal appearance.
373 if (!page_state_.get())
376 // Start or continue processing links.
377 process_links(pres_shell, pres_context, dom_window);
379 // If we've finished work on the links, move on to the
380 // next page, if any, or else generate the DVD filesystem.
381 if (!page_state_.get())
384 if (page_queue_.empty())
399 void WebDvdWindow::save_screenshot()
401 Glib::RefPtr<Gdk::Window> window(get_window());
403 window->process_updates(true);
405 background_temp_.reset(new temp_file("webdvd-back-"));
406 background_temp_->close();
407 std::cout << "saving " << background_temp_->get_name() << std::endl;
408 Gdk::Pixbuf::create(Glib::RefPtr<Gdk::Drawable>(window),
409 window->get_colormap(),
411 frame_params_.width, frame_params_.height)
412 ->save(background_temp_->get_name(), "png");
415 struct WebDvdWindow::page_state
417 page_state(nsIDOMDocument * doc, int width, int height)
418 : diff_pixbuf(Gdk::Pixbuf::create(
420 true, 8, // has_alpha, bits_per_sample
422 spumux_temp("webdvd-spumux-"),
423 links_temp("webdvd-links-"),
432 Glib::RefPtr<Gdk::Pixbuf> diff_pixbuf;
434 temp_file spumux_temp;
435 std::ofstream spumux_file;
437 temp_file links_temp;
440 LinkIterator links_it, links_end;
444 Glib::RefPtr<Gdk::Pixbuf> norm_pixbuf;
447 void WebDvdWindow::process_links(nsIPresShell * pres_shell,
448 nsIPresContext * pres_context,
449 nsIDOMWindow * dom_window)
451 Glib::RefPtr<Gdk::Window> window(get_window());
454 nsCOMPtr<nsIDOMDocument> basic_doc;
455 check(dom_window->GetDocument(getter_AddRefs(basic_doc)));
456 nsCOMPtr<nsIDOMNSDocument> ns_doc(do_QueryInterface(basic_doc));
458 nsCOMPtr<nsIEventStateManager> event_state_man(
459 pres_context->EventStateManager()); // does not AddRef
460 assert(event_state_man);
461 nsCOMPtr<nsIDOMDocumentEvent> event_factory(
462 do_QueryInterface(basic_doc));
463 assert(event_factory);
464 nsCOMPtr<nsIDOMDocumentView> doc_view(do_QueryInterface(basic_doc));
466 nsCOMPtr<nsIDOMAbstractView> view;
467 check(doc_view->GetDefaultView(getter_AddRefs(view)));
469 // Set up or recover our iteration state.
470 std::auto_ptr<page_state> state(page_state_);
475 basic_doc, frame_params_.width, frame_params_.height));
477 state->spumux_file.open(state->spumux_temp.get_name().c_str());
478 state->spumux_file <<
481 " <spu force='yes' start='00:00:00.00'\n"
482 " highlight='" << state->links_temp.get_name() << "'\n"
483 " select='" << state->links_temp.get_name() << "'>\n";
486 rectangle window_rect = {
487 0, 0, frame_params_.width, frame_params_.height
490 for (/* no initialisation */;
491 state->links_it != state->links_end;
494 nsCOMPtr<nsIDOMNode> node(*state->links_it);
496 // Find the link URI.
497 nsCOMPtr<nsILink> link(do_QueryInterface(node));
499 nsCOMPtr<nsIURI> uri;
500 check(link->GetHrefURI(getter_AddRefs(uri)));
501 std::string uri_string;
503 nsCString uri_ns_string;
504 check(uri->GetSpec(uri_ns_string));
505 uri_string.assign(uri_ns_string.BeginReading(),
506 uri_ns_string.EndReading());
508 std::string uri_sans_fragment(uri_string, 0, uri_string.find('#'));
510 // Is this a new link?
511 if (!state->link_changing)
513 // Find a rectangle enclosing the link and clip it to the
515 nsCOMPtr<nsIDOMElement> elem(do_QueryInterface(node));
517 state->link_rect = get_elem_rect(ns_doc, elem);
518 state->link_rect &= window_rect;
520 if (state->link_rect.empty())
522 std::cerr << "Ignoring invisible link to "
523 << uri_string << "\n";
529 if (state->link_num >= dvd::menu_buttons_max)
531 if (state->link_num == dvd::menu_buttons_max)
532 std::cerr << "No more than " << dvd::menu_buttons_max
533 << " buttons can be placed on a page\n";
534 std::cerr << "Ignoring link to " << uri_string << "\n";
538 // Check whether this is a link to a video or a page then
539 // add it to the known resources if not already seen.
541 check(uri->GetPath(path));
542 // FIXME: This is a bit of a hack. Perhaps we could decide
543 // later based on the MIME type determined by Mozilla?
544 if ((path.Length() > 4
545 && std::strcmp(path.EndReading() - 4, ".vob") == 0)
546 || (path.Length() > 8
547 && std::strcmp(path.EndReading() - 8, ".voblist")
551 check(uri->SchemeIs("file", &is_file));
554 std::cerr << "Links to video must use the file:"
558 add_video(uri_sans_fragment);
562 add_page(uri_sans_fragment);
565 nsCOMPtr<nsIContent> content(do_QueryInterface(node));
567 nsCOMPtr<nsIDOMEventTarget> event_target(
568 do_QueryInterface(node));
569 assert(event_target);
571 state->norm_pixbuf = Gdk::Pixbuf::create(
572 Glib::RefPtr<Gdk::Drawable>(window),
573 window->get_colormap(),
574 state->link_rect.left,
575 state->link_rect.top,
578 state->link_rect.right - state->link_rect.left,
579 state->link_rect.bottom - state->link_rect.top);
581 nsCOMPtr<nsIDOMEvent> event;
582 check(event_factory->CreateEvent(
583 NS_ConvertASCIItoUTF16("MouseEvents"),
584 getter_AddRefs(event)));
585 nsCOMPtr<nsIDOMMouseEvent> mouse_event(
586 do_QueryInterface(event));
588 check(mouse_event->InitMouseEvent(
589 NS_ConvertASCIItoUTF16("mouseover"),
593 0, // detail: mouse click count
594 state->link_rect.left, // screenX
595 state->link_rect.top, // screenY
596 state->link_rect.left, // clientX
597 state->link_rect.top, // clientY
598 false, false, false, false, // qualifiers
599 0, // button: left (or primary)
600 0)); // related target
602 check(event_target->DispatchEvent(mouse_event,
604 check(event_state_man->SetContentState(content,
605 NS_EVENT_STATE_HOVER));
607 pres_shell->FlushPendingNotifications(true);
609 // We may have to exit and wait for image loading
610 // to complete, at which point we will be called
612 if (pending_req_count_ > 0)
614 state->link_changing = true;
620 window->process_updates(true);
622 Glib::RefPtr<Gdk::Pixbuf> changed_pixbuf(
624 Glib::RefPtr<Gdk::Drawable>(window),
625 window->get_colormap(),
626 state->link_rect.left,
627 state->link_rect.top,
630 state->link_rect.right - state->link_rect.left,
631 state->link_rect.bottom - state->link_rect.top));
636 state->link_rect.left,
637 state->link_rect.top,
638 state->link_rect.right - state->link_rect.left,
639 state->link_rect.bottom - state->link_rect.top);
641 state->spumux_file <<
642 " <button x0='" << state->link_rect.left << "'"
643 " y0='" << state->link_rect.top << "'"
644 " x1='" << state->link_rect.right - 1 << "'"
645 " y1='" << state->link_rect.bottom - 1 << "'/>\n";
647 // Add to the page's links, ignoring any fragment (for now).
648 page_links_.back().push_back(uri_sans_fragment);
651 quantise_rgba_pixbuf(state->diff_pixbuf, dvd::button_n_colours);
653 std::cout << "saving " << state->links_temp.get_name()
655 state->diff_pixbuf->save(state->links_temp.get_name(), "png");
657 state->spumux_file <<
662 state->spumux_file.close();
664 // TODO: if (!state->spumux_file) throw ...
667 boost::shared_ptr<temp_file> vob_temp(
668 new temp_file("webdvd-vob-"));
669 std::ostringstream command_stream;
670 command_stream << "pngtopnm "
671 << background_temp_->get_name()
672 << " | ppmtoy4m -v0 -n1 -F"
673 << frame_params_.rate_numer
674 << ":" << frame_params_.rate_denom
675 << " -A" << frame_params_.pixel_ratio_width
676 << ":" << frame_params_.pixel_ratio_height
677 << (" -Ip -S420_mpeg2"
678 " | mpeg2enc -v0 -f8 -a2 -o/dev/stdout"
679 " | mplex -v0 -f8 -o/dev/stdout /dev/stdin"
680 " | spumux -v0 -mdvd ")
681 << state->spumux_temp.get_name()
682 << " > " << vob_temp->get_name();
683 std::string command(command_stream.str());
684 const char * argv[] = {
685 "/bin/sh", "-c", command.c_str(), 0
687 std::cout << "running " << argv[2] << std::endl;
689 Glib::spawn_sync(".",
690 Glib::ArrayHandle<std::string>(
691 argv, sizeof(argv)/sizeof(argv[0]),
692 Glib::OWNERSHIP_NONE),
693 Glib::SPAWN_STDOUT_TO_DEV_NULL,
697 if (command_result != 0)
698 throw std::runtime_error("spumux pipeline failed");
700 page_temp_files_.push_back(vob_temp);
704 void generate_page_dispatch(std::ostream &, int indent,
705 int first_page, int last_page);
707 void WebDvdWindow::generate_dvd()
709 temp_file temp("webdvd-dvdauthor-");
711 std::ofstream file(temp.get_name().c_str());
713 // We generate code that uses registers in the following way:
715 // g0: link destination (when jumping to menu 1), then scratch
716 // g1: current location
717 // g2-g11: location history (g2 = most recent)
718 // g12: location that last linked to a video
720 // All locations are divided into two bitfields: the least
721 // significant 10 bits are a page/menu number and the most
722 // significant 6 bits are a link/button number. This is
723 // chosen for compatibility with the encoding of the s8
724 // (button) register.
726 static const int link_mult = dvd::reg_s8_button_mult;
727 static const int page_mask = link_mult - 1;
728 static const int link_mask = (1 << dvd::reg_bits) - link_mult;
735 for (std::size_t page_num = 1;
736 page_num <= page_links_.size();
739 std::vector<std::string> & page_links =
740 page_links_[page_num - 1];
744 // This is the first page (root menu) which needs to
745 // include initialisation and dispatch code.
748 " <pgc entry='title'>\n"
750 // Has the location been set yet?
753 // Initialise the current location to first link on
755 " g1 = " << 1 * link_mult + 1 << ";\n"
759 // Has the user selected a link?
762 // First update the history.
763 // Does link go to the last page in the history?
764 " if (((g0 ^ g2) & " << page_mask
766 // It does; we treat this as going back and pop the old
767 // location off the history stack into the current
768 // location. Clear the free stack slot.
770 " g1 = g2; g2 = g3; g3 = g4; g4 = g5;\n"
771 " g5 = g6; g6 = g7; g7 = g8; g8 = g9;\n"
772 " g9 = g10; g10 = g11; g11 = 0;\n"
775 // Link goes to some other page, so push current
776 // location onto the history stack and set the current
777 // location to be exactly the target location.
779 " g11 = g10; g10 = g9; g9 = g8; g8 = g7;\n"
780 " g7 = g6; g6 = g5; g5 = g4; g4 = g3;\n"
781 " g3 = g2; g2 = g1; g1 = g0;\n"
784 // Find the target page number.
785 " g0 = g1 & " << page_mask << ";\n";
786 // There seems to be no way to perform a computed jump,
787 // so we generate all possible jumps and a binary search
788 // to select the correct one.
789 generate_page_dispatch(file, 12, 1, page_links_.size());
793 else // page_num != 1
801 // Clear link indicator and highlight the
802 // appropriate link/button.
803 " g0 = 0; s8 = g1 & " << link_mask << ";\n"
806 << page_temp_files_[page_num - 1]->get_name() << "'/>\n";
808 for (std::size_t link_num = 1;
809 link_num <= page_links.size();
814 // Update current location.
815 " g1 = " << link_num * link_mult + page_num << ";";
817 // Jump to appropriate resource.
818 const ResourceEntry & resource_loc =
819 resource_map_[page_links[link_num - 1]];
820 if (resource_loc.first == page_resource)
822 " g0 = " << 1 * link_mult + resource_loc.second << ";"
824 else if (resource_loc.first == video_resource)
825 file << " jump title " << resource_loc.second << ";";
827 file << " </button>\n";
837 // Generate a titleset for each video. This appears to make
838 // jumping to titles a whole lot simpler.
839 for (std::size_t video_num = 1;
840 video_num <= video_paths_.size();
845 // Generate a dummy menu so that the menu button on the
846 // remote control will work.
848 " <pgc entry='root'>\n"
849 " <pre> jump vmgm menu; </pre>\n"
854 // Record calling page/menu.
855 " <pre> g12 = g1; </pre>\n";
857 // Write a reference to a linked VOB file, or the contents
858 // of a linked VOB list file.
859 const std::string & video_path = video_paths_[video_num - 1];
860 if (video_path.compare(video_path.size() - 4, 4, ".vob") == 0)
862 // FIXME: Should XML-escape the path
863 file << " <vob file='" << video_path << "'/>\n";
867 assert(video_path.compare(video_path.size() - 8, 8,
869 // TODO: Validate the file contents;
870 file << Glib::file_get_contents(video_path);
874 // If page/menu location has not been changed during the
875 // video, change the location to be the following
876 // link/button when returning to it. In any case,
877 // return to a page/menu.
878 " <post> if (g1 eq g12) g1 = g1 + " << link_mult
879 << "; call menu; </post>\n"
891 const char * argv[] = {
893 "-o", output_dir_.c_str(),
894 "-x", temp.get_name().c_str(),
898 Glib::spawn_sync(".",
899 Glib::ArrayHandle<std::string>(
900 argv, sizeof(argv)/sizeof(argv[0]),
901 Glib::OWNERSHIP_NONE),
902 Glib::SPAWN_SEARCH_PATH
903 | Glib::SPAWN_STDOUT_TO_DEV_NULL,
907 if (command_result != 0)
908 throw std::runtime_error("dvdauthor failed");
912 void generate_page_dispatch(std::ostream & file, int indent,
913 int first_page, int last_page)
915 if (first_page == 1 && last_page == 1)
917 // The dispatch code is *on* page 1 so we must not dispatch to
918 // page 1 since that would cause an infinite loop. This case
919 // should be unreachable if there is more than one page due
920 // to the following case.
922 else if (first_page == 1 && last_page == 2)
924 // dvdauthor doesn't allow empty blocks or null statements so
925 // when selecting between pages 1 and 2 we don't use an "else"
926 // part. We must use braces so that a following "else" will
927 // match the right "if".
928 file << std::setw(indent) << "" << "{\n"
929 << std::setw(indent) << "" << "if (g0 eq 2)\n"
930 << std::setw(indent + 2) << "" << "jump menu 2;\n"
931 << std::setw(indent) << "" << "}\n";
933 else if (first_page == last_page)
935 file << std::setw(indent) << ""
936 << "jump menu " << first_page << ";\n";
940 int middle = (first_page + last_page) / 2;
941 file << std::setw(indent) << "" << "if (g0 le " << middle << ")\n";
942 generate_page_dispatch(file, indent + 2, first_page, middle);
943 file << std::setw(indent) << "" << "else\n";
944 generate_page_dispatch(file, indent + 2, middle + 1, last_page);
948 const video::frame_params & lookup_frame_params(const char * str)
951 static const struct { const char * str; bool is_ntsc; }
957 // For DVD purposes, SECAM can be treated identically to PAL.
961 for (std::size_t i = 0;
962 i != sizeof(known_strings)/sizeof(known_strings[0]);
964 if (std::strcmp(str, known_strings[i].str) == 0)
965 return known_strings[i].is_ntsc ?
966 video::ntsc_params : video::pal_params;
967 throw std::runtime_error(
968 std::string("Invalid video standard: ").append(str));
971 void print_usage(std::ostream & stream, const char * command_name)
973 stream << "Usage: " << command_name
974 << (" [gtk-options] [--video-std std-name]"
975 " [--preview] menu-url [output-dir]\n");
980 int main(int argc, char ** argv)
984 video::frame_params frame_params = video::pal_params;
985 bool preview_mode = false;
986 std::string menu_url;
987 std::string output_dir;
989 // Do initial option parsing. We have to do this before
990 // letting Gtk parse the arguments since we may need to spawn
995 if (std::strcmp(argv[argi], "--") == 0)
999 else if (std::strcmp(argv[argi], "--help") == 0)
1001 print_usage(std::cout, argv[0]);
1002 return EXIT_SUCCESS;
1004 else if (std::strcmp(argv[argi], "--preview") == 0)
1006 preview_mode = true;
1009 else if (std::strcmp(argv[argi], "--video-std") == 0)
1011 if (argi + 1 == argc)
1013 std::cerr << "Missing argument to --video-std\n";
1014 print_usage(std::cerr, argv[0]);
1015 return EXIT_FAILURE;
1017 frame_params = lookup_frame_params(argv[argi + 1]);
1026 std::auto_ptr<FrameBuffer> fb;
1029 // Spawn Xvfb and set env variables so that Xlib will use it
1030 // Use 8 bits each for RGB components, which should translate into
1031 // "enough" bits for YUV components.
1032 fb.reset(new FrameBuffer(frame_params.width, frame_params.height,
1034 setenv("XAUTHORITY", fb->get_x_authority().c_str(), true);
1035 setenv("DISPLAY", fb->get_x_display().c_str(), true);
1039 Gtk::Main kit(argc, argv);
1041 // Complete option parsing with Gtk's options out of the way.
1043 while (argi != argc)
1045 if (std::strcmp(argv[argi], "--") == 0)
1050 else if (std::strcmp(argv[argi], "--preview") == 0)
1054 else if (std::strcmp(argv[argi], "--video-std") == 0)
1058 else if (argv[argi][0] == '-')
1060 std::cerr << "Invalid option: " << argv[argi] << "\n";
1061 print_usage(std::cerr, argv[0]);
1062 return EXIT_FAILURE;
1070 // Look for a starting URL or filename and (except in preview
1071 // mode) an output directory after the options.
1072 if (argc - argi != (preview_mode ? 1 : 2))
1074 print_usage(std::cerr, argv[0]);
1075 return EXIT_FAILURE;
1077 if (std::strstr(argv[argi], "://"))
1079 // It appears to be an absolute URL, so use it as-is.
1080 menu_url = argv[argi];
1084 // Assume it's a filename. Resolve it to an absolute URL.
1085 std::string path(argv[argi]);
1086 if (!Glib::path_is_absolute(path))
1087 path = Glib::build_filename(Glib::get_current_dir(), path);
1088 menu_url = Glib::filename_to_uri(path);
1091 output_dir = argv[argi + 1];
1093 // Initialise Mozilla
1094 BrowserWidget::init();
1096 // Run the browser/converter
1097 WebDvdWindow window(frame_params, menu_url, output_dir);
1098 Gtk::Main::run(window);
1100 catch (std::exception & e)
1102 std::cerr << "Fatal error: " << e.what() << "\n";
1103 return EXIT_FAILURE;
1106 return EXIT_SUCCESS;