+// Copyright 2005-6 Ben Hutchings <ben@decadent.org.uk>.
+// See the file "COPYING" for licence details.
+
+#include <cassert>
+#include <cstring>
+#include <exception>
+#include <fstream>
+#include <iomanip>
+#include <iostream>
+#include <memory>
+#include <queue>
+#include <set>
+#include <sstream>
+#include <string>
+
+#include <stdlib.h>
+
+#include <boost/shared_ptr.hpp>
+
+#include <gdkmm/pixbuf.h>
+#include <glibmm/convert.h>
+#include <glibmm/spawn.h>
+#include <gtkmm/main.h>
+#include <gtkmm/window.h>
+
+#include <imglib2/ImageErrors.h>
+#include <nsGUIEvent.h>
+#include <nsIBoxObject.h>
+#include <nsIContent.h>
+#include <nsIDocShell.h>
+#include <nsIDOMAbstractView.h>
+#include <nsIDOMBarProp.h>
+#include <nsIDOMDocumentEvent.h>
+#include <nsIDOMDocumentView.h>
+#include <nsIDOMElement.h>
+#include <nsIDOMEventTarget.h>
+#include <nsIDOMHTMLDocument.h>
+#include <nsIDOMMouseEvent.h>
+#include <nsIDOMNSDocument.h>
+#include <nsIDOMWindow.h>
+#include <nsIEventStateManager.h>
+#include <nsIInterfaceRequestorUtils.h>
+#include <nsIURI.h> // required before nsILink.h
+#include <nsILink.h>
+#include <nsIPrefBranch.h>
+#include <nsIPrefService.h>
+#include <nsIPresContext.h>
+#include <nsIPresShell.h>
+#include <nsIServiceManagerUtils.h>
+#include <nsIWebBrowser.h>
+#include <nsString.h>
+
+#include "browser_widget.hpp"
+#include "child_iterator.hpp"
+#include "dvd.hpp"
+#include "generate_dvd.hpp"
+#include "link_iterator.hpp"
+#include "null_prompt_service.hpp"
+#include "pixbufs.hpp"
+#include "style_sheets.hpp"
+#include "temp_file.hpp"
+#include "video.hpp"
+#include "x_frame_buffer.hpp"
+#include "xml_utils.hpp"
+#include "xpcom_support.hpp"
+
+using xpcom_support::check;
+
+namespace
+{
+ // We can try using any of these encoders to convert PNG to MPEG.
+ enum mpeg_encoder
+ {
+ mpeg_encoder_ffmpeg, // ffmpeg
+ mpeg_encoder_mjpegtools_old, // mjpegtools before version 1.8
+ mpeg_encoder_mjpegtools_new // mjpegtools from version 1.8
+ };
+
+ struct rectangle
+ {
+ int left, top; // inclusive
+ int right, bottom; // exclusive
+
+ rectangle operator|=(const rectangle & other)
+ {
+ if (other.empty())
+ {
+ // use current extents unchanged
+ }
+ else if (empty())
+ {
+ // use other extents
+ *this = other;
+ }
+ else
+ {
+ // find rectangle enclosing both extents
+ left = std::min(left, other.left);
+ top = std::min(top, other.top);
+ right = std::max(right, other.right);
+ bottom = std::max(bottom, other.bottom);
+ }
+
+ return *this;
+ }
+
+ rectangle operator&=(const rectangle & other)
+ {
+ // find rectangle enclosed in both extents
+ left = std::max(left, other.left);
+ top = std::max(top, other.top);
+ right = std::max(left, std::min(right, other.right));
+ bottom = std::max(top, std::min(bottom, other.bottom));
+ return *this;
+ }
+
+ bool empty() const
+ {
+ return left == right || bottom == top;
+ }
+ };
+
+ rectangle get_elem_rect(nsIDOMNSDocument * ns_doc,
+ nsIDOMElement * elem)
+ {
+ rectangle result;
+
+ // Start with this element's bounding box
+ nsCOMPtr<nsIBoxObject> box;
+ check(ns_doc->GetBoxObjectFor(elem, getter_AddRefs(box)));
+ int width, height;
+ check(box->GetScreenX(&result.left));
+ check(box->GetScreenY(&result.top));
+ check(box->GetWidth(&width));
+ check(box->GetHeight(&height));
+ result.right = result.left + width;
+ result.bottom = result.top + height;
+
+ // Merge bounding boxes of all child elements
+ for (child_iterator it = child_iterator(elem), end; it != end; ++it)
+ {
+ nsCOMPtr<nsIDOMNode> child_node(*it);
+ PRUint16 child_type;
+ if (check(child_node->GetNodeType(&child_type)),
+ child_type == nsIDOMNode::ELEMENT_NODE)
+ {
+ nsCOMPtr<nsIDOMElement> child_elem(
+ do_QueryInterface(child_node));
+ result |= get_elem_rect(ns_doc, child_elem);
+ }
+ }
+
+ return result;
+ }
+
+
+ class videolink_window : public Gtk::Window
+ {
+ public:
+ videolink_window(
+ const video::frame_params & frame_params,
+ const std::string & main_page_uri,
+ const std::string & output_dir,
+ mpeg_encoder encoder);
+
+ bool is_finished() const;
+
+ private:
+ dvd_contents::pgc_ref add_menu(const std::string & uri);
+ dvd_contents::pgc_ref add_title(const std::string & uri);
+ void load_next_page();
+ bool on_idle();
+ void on_net_state_change(const char * uri, gint flags, guint status);
+ bool browser_is_busy() const
+ {
+ return pending_window_update_ || pending_req_count_;
+ }
+ bool process_page();
+ void save_screenshot();
+ void process_links(nsIPresShell * pres_shell,
+ nsIPresContext * pres_context,
+ nsIDOMWindow * dom_window);
+
+ video::frame_params frame_params_;
+ std::string output_dir_;
+ mpeg_encoder encoder_;
+ browser_widget browser_widget_;
+ nsCOMPtr<nsIStyleSheet> stylesheet_;
+
+ dvd_contents contents_;
+ typedef std::map<std::string, dvd_contents::pgc_ref> resource_map_type;
+ resource_map_type resource_map_;
+
+ std::queue<std::string> page_queue_;
+ bool pending_window_update_;
+ int pending_req_count_;
+ bool have_tweaked_page_;
+ std::auto_ptr<temp_file> background_temp_;
+ struct page_state;
+ std::auto_ptr<page_state> page_state_;
+
+ bool finished_;
+ };
+
+ videolink_window::videolink_window(
+ const video::frame_params & frame_params,
+ const std::string & main_page_uri,
+ const std::string & output_dir,
+ mpeg_encoder encoder)
+ : frame_params_(frame_params),
+ output_dir_(output_dir),
+ encoder_(encoder),
+ stylesheet_(load_css("file://" VIDEOLINK_LIB_DIR "/videolink.css")),
+ pending_window_update_(false),
+ pending_req_count_(0),
+ have_tweaked_page_(false),
+ finished_(false)
+ {
+ set_size_request(frame_params_.width, frame_params_.height);
+ set_resizable(false);
+
+ add(browser_widget_);
+ browser_widget_.show();
+ Glib::signal_idle().connect(
+ SigC::slot(*this, &videolink_window::on_idle));
+ browser_widget_.signal_net_state().connect(
+ SigC::slot(*this, &videolink_window::on_net_state_change));
+
+ add_menu(main_page_uri);
+ }
+
+ bool videolink_window::is_finished() const
+ {
+ return finished_;
+ }
+
+ dvd_contents::pgc_ref videolink_window::add_menu(const std::string & uri)
+ {
+ dvd_contents::pgc_ref next_menu(dvd_contents::menu_pgc,
+ contents_.menus.size());
+ std::pair<resource_map_type::iterator, bool> insert_result(
+ resource_map_.insert(std::make_pair(uri, next_menu)));
+
+ if (!insert_result.second)
+ {
+ return insert_result.first->second;
+ }
+ else
+ {
+ page_queue_.push(uri);
+ contents_.menus.resize(contents_.menus.size() + 1);
+ return next_menu;
+ }
+ }
+
+ dvd_contents::pgc_ref videolink_window::add_title(const std::string & uri)
+ {
+ dvd_contents::pgc_ref next_title(dvd_contents::title_pgc,
+ contents_.titles.size());
+ std::pair<resource_map_type::iterator, bool> insert_result(
+ resource_map_.insert(std::make_pair(uri, next_title)));
+
+ if (!insert_result.second)
+ {
+ return insert_result.first->second;
+ }
+ else
+ {
+ Glib::ustring hostname;
+ std::string path(Glib::filename_from_uri(uri, hostname));
+ // FIXME: Should check the hostname
+
+ vob_list list;
+
+ // Store a reference to a linked VOB file, or the contents
+ // of a linked VOB list file.
+ if (path.compare(path.size() - 4, 4, ".vob") == 0)
+ {
+ if (!Glib::file_test(path, Glib::FILE_TEST_IS_REGULAR))
+ throw std::runtime_error(
+ path + " is missing or not a regular file");
+ vob_ref ref;
+ ref.file = path;
+ list.push_back(ref);
+ }
+ else
+ {
+ assert(path.compare(path.size() - 8, 8, ".voblist") == 0);
+ read_vob_list(path).swap(list);
+ }
+
+ contents_.titles.resize(contents_.titles.size() + 1);
+ contents_.titles.back().swap(list);
+ return next_title;
+ }
+ }
+
+ void videolink_window::load_next_page()
+ {
+ assert(!page_queue_.empty());
+ const std::string & uri = page_queue_.front();
+ std::cout << "loading " << uri << std::endl;
+
+ browser_widget_.load_uri(uri);
+ }
+
+ bool videolink_window::on_idle()
+ {
+ load_next_page();
+ return false; // don't call again thankyou
+ }
+
+ void videolink_window::on_net_state_change(const char * uri,
+ gint flags, guint status)
+ {
+# ifdef DEBUG_ON_NET_STATE_CHANGE
+ std::cout << "videolink_window::on_net_state_change(";
+ if (uri)
+ std::cout << '"' << uri << '"';
+ else
+ std::cout << "NULL";
+ std::cout << ", ";
+ {
+ gint flags_left = flags;
+ static const struct {
+ gint value;
+ const char * name;
+ } flag_names[] = {
+ { GTK_MOZ_EMBED_FLAG_START, "STATE_START" },
+ { GTK_MOZ_EMBED_FLAG_REDIRECTING, "STATE_REDIRECTING" },
+ { GTK_MOZ_EMBED_FLAG_TRANSFERRING, "STATE_TRANSFERRING" },
+ { GTK_MOZ_EMBED_FLAG_NEGOTIATING, "STATE_NEGOTIATING" },
+ { GTK_MOZ_EMBED_FLAG_STOP, "STATE_STOP" },
+ { GTK_MOZ_EMBED_FLAG_IS_REQUEST, "STATE_IS_REQUEST" },
+ { GTK_MOZ_EMBED_FLAG_IS_DOCUMENT, "STATE_IS_DOCUMENT" },
+ { GTK_MOZ_EMBED_FLAG_IS_NETWORK, "STATE_IS_NETWORK" },
+ { GTK_MOZ_EMBED_FLAG_IS_WINDOW, "STATE_IS_WINDOW" }
+ };
+ for (int i = 0; i != sizeof(flag_names)/sizeof(flag_names[0]); ++i)
+ {
+ if (flags & flag_names[i].value)
+ {
+ std::cout << flag_names[i].name;
+ flags_left -= flag_names[i].value;
+ if (flags_left)
+ std::cout << " | ";
+ }
+ }
+ if (flags_left)
+ std::cout << "0x" << std::setbase(16) << flags_left;
+ }
+ std::cout << ", " << "0x" << std::setbase(16) << status << ")\n";
+# endif // DEBUG_ON_NET_STATE_CHANGE
+
+ if (flags & GTK_MOZ_EMBED_FLAG_IS_REQUEST)
+ {
+ if (flags & GTK_MOZ_EMBED_FLAG_START)
+ ++pending_req_count_;
+
+ if (flags & GTK_MOZ_EMBED_FLAG_STOP)
+ {
+ assert(pending_req_count_ != 0);
+ --pending_req_count_;
+ }
+ }
+
+ if (flags & GTK_MOZ_EMBED_FLAG_IS_DOCUMENT
+ && flags & GTK_MOZ_EMBED_FLAG_START)
+ {
+ pending_window_update_ = true;
+ have_tweaked_page_ = false;
+ }
+
+ if (flags & GTK_MOZ_EMBED_FLAG_IS_WINDOW
+ && flags & GTK_MOZ_EMBED_FLAG_STOP)
+ {
+ // Check whether the load was successful, ignoring this
+ // pseudo-error.
+ if (status != NS_IMAGELIB_ERROR_LOAD_ABORTED)
+ check(status);
+
+ pending_window_update_ = false;
+ }
+
+ if (!browser_is_busy())
+ {
+ try
+ {
+ if (!process_page())
+ {
+ finished_ = true;
+ Gtk::Main::quit();
+ }
+ }
+ catch (std::exception & e)
+ {
+ std::cerr << "Fatal error";
+ if (!page_queue_.empty())
+ std::cerr << " while processing <" << page_queue_.front()
+ << ">";
+ std::cerr << ": " << e.what() << "\n";
+ Gtk::Main::quit();
+ }
+ catch (Glib::Exception & e)
+ {
+ std::cerr << "Fatal error";
+ if (!page_queue_.empty())
+ std::cerr << " while processing <" << page_queue_.front()
+ << ">";
+ std::cerr << ": " << e.what() << "\n";
+ Gtk::Main::quit();
+ }
+ }
+ }
+
+ bool videolink_window::process_page()
+ {
+ assert(!page_queue_.empty());
+
+ nsCOMPtr<nsIWebBrowser> browser(browser_widget_.get_browser());
+ nsCOMPtr<nsIDocShell> doc_shell(do_GetInterface(browser));
+ assert(doc_shell);
+ nsCOMPtr<nsIPresShell> pres_shell;
+ check(doc_shell->GetPresShell(getter_AddRefs(pres_shell)));
+ nsCOMPtr<nsIPresContext> pres_context;
+ check(doc_shell->GetPresContext(getter_AddRefs(pres_context)));
+ nsCOMPtr<nsIDOMWindow> dom_window;
+ check(browser->GetContentDOMWindow(getter_AddRefs(dom_window)));
+
+ // If we haven't done so already, apply the stylesheet and
+ // disable scrollbars.
+ if (!have_tweaked_page_)
+ {
+ apply_style_sheet(stylesheet_, pres_shell);
+
+ // This actually only needs to be done once.
+ nsCOMPtr<nsIDOMBarProp> dom_bar_prop;
+ check(dom_window->GetScrollbars(getter_AddRefs(dom_bar_prop)));
+ check(dom_bar_prop->SetVisible(false));
+
+ have_tweaked_page_ = true;
+
+ // Might need to wait a while for things to load or more
+ // likely for a re-layout.
+ if (browser_is_busy())
+ return true;
+ }
+
+ // All further work should only be done if we're not in preview mode.
+ if (!output_dir_.empty())
+ {
+ // If we haven't already started work on this menu, save a
+ // screenshot of its normal appearance.
+ if (!page_state_.get())
+ save_screenshot();
+
+ // Start or continue processing links.
+ process_links(pres_shell, pres_context, dom_window);
+
+ // If we've finished work on the links, move on to the
+ // next page, if any, or else generate the DVD filesystem.
+ if (!page_state_.get())
+ {
+ page_queue_.pop();
+ if (page_queue_.empty())
+ {
+ generate_dvd(contents_, output_dir_);
+ return false;
+ }
+ else
+ {
+ load_next_page();
+ }
+ }
+ }
+
+ return true;
+ }
+
+ void videolink_window::save_screenshot()
+ {
+ Glib::RefPtr<Gdk::Window> window(get_window());
+ assert(window);
+ window->process_updates(true);
+
+ background_temp_.reset(new temp_file("videolink-back-"));
+ background_temp_->close();
+ std::cout << "saving " << background_temp_->get_name() << std::endl;
+ Gdk::Pixbuf::create(Glib::RefPtr<Gdk::Drawable>(window),
+ window->get_colormap(),
+ 0, 0, 0, 0,
+ frame_params_.width, frame_params_.height)
+ ->save(background_temp_->get_name(), "png");
+ }
+
+ struct videolink_window::page_state
+ {
+ page_state(nsIDOMDocument * doc, int width, int height)
+ : diff_pixbuf(Gdk::Pixbuf::create(
+ Gdk::COLORSPACE_RGB,
+ true, 8, // has_alpha, bits_per_sample
+ width, height)),
+ spumux_temp("videolink-spumux-"),
+ links_temp("videolink-links-"),
+ link_num(0),
+ links_it(doc),
+ link_changing(false)
+ {
+ spumux_temp.close();
+ links_temp.close();
+ }
+
+ Glib::RefPtr<Gdk::Pixbuf> diff_pixbuf;
+
+ temp_file spumux_temp;
+ std::ofstream spumux_file;
+
+ temp_file links_temp;
+
+ unsigned link_num;
+ link_iterator links_it, links_end;
+
+ rectangle link_rect;
+ bool link_changing;
+ Glib::RefPtr<Gdk::Pixbuf> norm_pixbuf;
+ };
+
+ void videolink_window::process_links(nsIPresShell * pres_shell,
+ nsIPresContext * pres_context,
+ nsIDOMWindow * dom_window)
+ {
+ Glib::RefPtr<Gdk::Window> window(get_window());
+ assert(window);
+
+ nsCOMPtr<nsIDOMDocument> basic_doc;
+ check(dom_window->GetDocument(getter_AddRefs(basic_doc)));
+ nsCOMPtr<nsIDOMNSDocument> ns_doc(do_QueryInterface(basic_doc));
+ assert(ns_doc);
+ nsCOMPtr<nsIEventStateManager> event_state_man(
+ pres_context->EventStateManager()); // does not AddRef
+ assert(event_state_man);
+ nsCOMPtr<nsIDOMDocumentEvent> event_factory(
+ do_QueryInterface(basic_doc));
+ assert(event_factory);
+ nsCOMPtr<nsIDOMDocumentView> doc_view(do_QueryInterface(basic_doc));
+ assert(doc_view);
+ nsCOMPtr<nsIDOMAbstractView> view;
+ check(doc_view->GetDefaultView(getter_AddRefs(view)));
+
+ // Set up or recover our iteration state.
+ std::auto_ptr<page_state> state(page_state_);
+ if (!state.get())
+ {
+ state.reset(
+ new page_state(
+ basic_doc, frame_params_.width, frame_params_.height));
+
+ state->spumux_file.open(state->spumux_temp.get_name().c_str());
+ state->spumux_file <<
+ "<subpictures>\n"
+ " <stream>\n"
+ " <spu force='yes' start='00:00:00.00'\n"
+ " highlight='" << state->links_temp.get_name() << "'\n"
+ " select='" << state->links_temp.get_name() << "'>\n";
+ }
+
+ rectangle window_rect = {
+ 0, 0, frame_params_.width, frame_params_.height
+ };
+
+ unsigned menu_num = resource_map_[page_queue_.front()].index;
+
+ for (/* no initialisation */;
+ state->links_it != state->links_end;
+ ++state->links_it)
+ {
+ nsCOMPtr<nsIDOMNode> node(*state->links_it);
+
+ // Find the link URI and separate any fragment from it.
+ nsCOMPtr<nsILink> link(do_QueryInterface(node));
+ assert(link);
+ nsCOMPtr<nsIURI> uri_iface;
+ check(link->GetHrefURI(getter_AddRefs(uri_iface)));
+ std::string uri_and_fragment, uri, fragment;
+ {
+ nsCString uri_and_fragment_ns;
+ check(uri_iface->GetSpec(uri_and_fragment_ns));
+ uri_and_fragment.assign(uri_and_fragment_ns.BeginReading(),
+ uri_and_fragment_ns.EndReading());
+
+ std::size_t hash_pos = uri_and_fragment.find('#');
+ uri.assign(uri_and_fragment, 0, hash_pos);
+ if (hash_pos != std::string::npos)
+ fragment.assign(uri_and_fragment,
+ hash_pos + 1, std::string::npos);
+ }
+
+ // Is this a new link?
+ if (!state->link_changing)
+ {
+ // Find a rectangle enclosing the link and clip it to the
+ // window.
+ nsCOMPtr<nsIDOMElement> elem(do_QueryInterface(node));
+ assert(elem);
+ state->link_rect = get_elem_rect(ns_doc, elem);
+ state->link_rect &= window_rect;
+
+ if (state->link_rect.empty())
+ {
+ std::cerr << "Ignoring invisible link to "
+ << uri_and_fragment << "\n";
+ continue;
+ }
+
+ ++state->link_num;
+
+ if (state->link_num >= unsigned(dvd::menu_buttons_max))
+ {
+ if (state->link_num == unsigned(dvd::menu_buttons_max))
+ std::cerr << "No more than " << dvd::menu_buttons_max
+ << " buttons can be placed on a menu\n";
+ std::cerr << "Ignoring link to " << uri_and_fragment
+ << "\n";
+ continue;
+ }
+
+ state->spumux_file <<
+ " <button x0='" << state->link_rect.left << "'"
+ " y0='" << state->link_rect.top << "'"
+ " x1='" << state->link_rect.right - 1 << "'"
+ " y1='" << state->link_rect.bottom - 1 << "'/>\n";
+
+ // Check whether this is a link to a video or a page then
+ // add it to the known resources if not already seen; then
+ // add it to the menu entries.
+ dvd_contents::pgc_ref target;
+ // FIXME: This is a bit of a hack. Perhaps we could decide
+ // later based on the MIME type determined by Mozilla?
+ if ((uri.size() > 4
+ && uri.compare(uri.size() - 4, 4, ".vob") == 0)
+ || (uri.size() > 8
+ && uri.compare(uri.size() - 8, 8, ".voblist") == 0))
+ {
+ PRBool is_file;
+ check(uri_iface->SchemeIs("file", &is_file));
+ if (!is_file)
+ {
+ std::cerr << "Links to video must use the file:"
+ << " scheme\n";
+ continue;
+ }
+ target = add_title(uri);
+ target.sub_index =
+ std::strtoul(fragment.c_str(), NULL, 10);
+ }
+ else
+ {
+ target = add_menu(uri);
+ // TODO: If there's a fragment, work out which button
+ // is closest and set target.sub_index.
+ }
+ contents_.menus[menu_num].entries.push_back(target);
+
+ nsCOMPtr<nsIContent> content(do_QueryInterface(node));
+ assert(content);
+ nsCOMPtr<nsIDOMEventTarget> event_target(
+ do_QueryInterface(node));
+ assert(event_target);
+
+ state->norm_pixbuf = Gdk::Pixbuf::create(
+ Glib::RefPtr<Gdk::Drawable>(window),
+ window->get_colormap(),
+ state->link_rect.left,
+ state->link_rect.top,
+ 0,
+ 0,
+ state->link_rect.right - state->link_rect.left,
+ state->link_rect.bottom - state->link_rect.top);
+
+ nsCOMPtr<nsIDOMEvent> event;
+ check(event_factory->CreateEvent(
+ NS_ConvertASCIItoUTF16("MouseEvents"),
+ getter_AddRefs(event)));
+ nsCOMPtr<nsIDOMMouseEvent> mouse_event(
+ do_QueryInterface(event));
+ assert(mouse_event);
+ check(mouse_event->InitMouseEvent(
+ NS_ConvertASCIItoUTF16("mouseover"),
+ true, // can bubble
+ true, // cancelable
+ view,
+ 0, // detail: mouse click count
+ state->link_rect.left, // screenX
+ state->link_rect.top, // screenY
+ state->link_rect.left, // clientX
+ state->link_rect.top, // clientY
+ false, false, false, false, // qualifiers
+ 0, // button: left (or primary)
+ 0)); // related target
+ PRBool dummy;
+ check(event_target->DispatchEvent(mouse_event,
+ &dummy));
+ check(event_state_man->SetContentState(content,
+ NS_EVENT_STATE_HOVER));
+
+ pres_shell->FlushPendingNotifications(true);
+
+ // We may have to exit and wait for image loading
+ // to complete, at which point we will be called
+ // again.
+ if (browser_is_busy())
+ {
+ state->link_changing = true;
+ page_state_ = state;
+ return;
+ }
+ }
+
+ window->process_updates(true);
+
+ Glib::RefPtr<Gdk::Pixbuf> changed_pixbuf(
+ Gdk::Pixbuf::create(
+ Glib::RefPtr<Gdk::Drawable>(window),
+ window->get_colormap(),
+ state->link_rect.left,
+ state->link_rect.top,
+ 0,
+ 0,
+ state->link_rect.right - state->link_rect.left,
+ state->link_rect.bottom - state->link_rect.top));
+ diff_rgb_pixbufs(
+ state->norm_pixbuf,
+ changed_pixbuf,
+ state->diff_pixbuf,
+ state->link_rect.left,
+ state->link_rect.top,
+ state->link_rect.right - state->link_rect.left,
+ state->link_rect.bottom - state->link_rect.top);
+ }
+
+ quantise_rgba_pixbuf(state->diff_pixbuf, dvd::button_n_colours);
+
+ std::cout << "saving " << state->links_temp.get_name()
+ << std::endl;
+ state->diff_pixbuf->save(state->links_temp.get_name(), "png");
+
+ state->spumux_file <<
+ " </spu>\n"
+ " </stream>\n"
+ "</subpictures>\n";
+
+ state->spumux_file.close();
+
+ // TODO: if (!state->spumux_file) throw ...
+
+ {
+ std::ostringstream command_stream;
+ if (encoder_ == mpeg_encoder_ffmpeg)
+ {
+ command_stream
+ << "ffmpeg"
+ << " -f image2 -vcodec png -i "
+ << background_temp_->get_name()
+ << " -target " << frame_params_.ffmpeg_name << "-dvd"
+ << " -vcodec mpeg2video -an -y /dev/stdout"
+ << " | spumux -v0 -mdvd " << state->spumux_temp.get_name()
+ << " > " << contents_.menus[menu_num].vob_temp->get_name();
+ }
+ else
+ {
+ assert(encoder_ == mpeg_encoder_mjpegtools_old
+ || encoder_ == mpeg_encoder_mjpegtools_new);
+ command_stream
+ << "pngtopnm "
+ << background_temp_->get_name()
+ << " | ppmtoy4m -v0 -n1 -F"
+ << frame_params_.rate_numer
+ << ":" << frame_params_.rate_denom
+ << " -A" << frame_params_.pixel_ratio_width
+ << ":" << frame_params_.pixel_ratio_height
+ << " -Ip ";
+ // The chroma subsampling keywords changed between
+ // versions 1.6.2 and 1.8 of mjpegtools. There is no
+ // keyword that works with both.
+ if (encoder_ == mpeg_encoder_mjpegtools_old)
+ command_stream << "-S420_mpeg2";
+ else
+ command_stream << "-S420mpeg2";
+ command_stream
+ << (" | mpeg2enc -v0 -f8 -a2 -o/dev/stdout"
+ " | mplex -v0 -f8 -o/dev/stdout /dev/stdin"
+ " | spumux -v0 -mdvd ")
+ << state->spumux_temp.get_name()
+ << " > "
+ << contents_.menus[menu_num].vob_temp->get_name();
+ }
+ std::string command(command_stream.str());
+ const char * argv[] = {
+ "/bin/sh", "-c", command.c_str(), 0
+ };
+ std::cout << "running " << argv[2] << std::endl;
+ int command_result;
+ Glib::spawn_sync(".",
+ Glib::ArrayHandle<std::string>(
+ argv, sizeof(argv)/sizeof(argv[0]),
+ Glib::OWNERSHIP_NONE),
+ Glib::SPAWN_STDOUT_TO_DEV_NULL,
+ SigC::Slot0<void>(),
+ 0, 0,
+ &command_result);
+ if (command_result != 0)
+ throw std::runtime_error("spumux pipeline failed");
+ }
+ }
+
+ const video::frame_params & lookup_frame_params(const char * str)
+ {
+ assert(str);
+ static const char * const known_strings[] = {
+ "525", "625",
+ "525/60", "625/50",
+ "NTSC", "PAL",
+ "ntsc", "pal"
+ };
+ for (std::size_t i = 0;
+ i != sizeof(known_strings)/sizeof(known_strings[0]);
+ ++i)
+ if (std::strcmp(str, known_strings[i]) == 0)
+ return (i & 1)
+ ? video::frame_params_625
+ : video::frame_params_525;
+ throw std::runtime_error(
+ std::string("Invalid video standard: ").append(str));
+ }
+
+ void print_usage(std::ostream & stream, const char * command_name)
+ {
+ stream <<
+ "Usage: " << command_name << " [gtk-options] [--preview]\n"
+ " [--video-std {525|525/60|NTSC|ntsc"
+ " | 625|625/50|PAL|pal}]\n"
+ " [--encoder {mjpegtools|mjpegtools-old}]\n"
+ " menu-url [output-dir]\n";
+ }
+
+ void set_browser_preferences()
+ {
+ nsCOMPtr<nsIPrefService> pref_service;
+ static const nsCID pref_service_cid = NS_PREFSERVICE_CID;
+ check(CallGetService<nsIPrefService>(pref_service_cid,
+ getter_AddRefs(pref_service)));
+ nsCOMPtr<nsIPrefBranch> pref_branch;
+
+ // Disable IE-compatibility kluge that causes backgrounds to
+ // sometimes/usually be missing from snapshots. This is only
+ // effective from Mozilla 1.8 onward.
+# if MOZ_VERSION_MAJOR > 1 \
+ || (MOZ_VERSION_MAJOR == 1 && MOZ_VERSION_MINOR >= 8)
+ check(pref_service->GetDefaultBranch("layout",
+ getter_AddRefs(pref_branch)));
+ check(pref_branch->SetBoolPref(
+ "fire_onload_after_image_background_loads",
+ true));
+# endif
+
+ // Set display resolution. With standard-definition video we
+ // will be fitting ~600 pixels across a screen typically
+ // ranging from 10 to 25 inches wide, for a resolution of
+ // 24-60 dpi. I therefore declare the average horizontal
+ // resolution to be 40 dpi. The vertical resolution will be
+ // slightly different but unfortunately Mozilla doesn't
+ // support non-square pixels (and neither do fontconfig or Xft
+ // anyway).
+ check(pref_service->GetDefaultBranch("browser.display",
+ getter_AddRefs(pref_branch)));
+ check(pref_branch->SetIntPref("screen_resolution", 40));
+ }
+
+} // namespace
+
+void fatal_error(const std::string & message)
+{
+ std::cerr << "Fatal error: " << message << "\n";
+ Gtk::Main::quit();
+}
+
+int main(int argc, char ** argv)
+{
+ try
+ {
+ video::frame_params frame_params = video::frame_params_625;
+ bool preview_mode = false;
+ std::string menu_url;
+ std::string output_dir;
+ mpeg_encoder encoder = mpeg_encoder_ffmpeg;
+
+ // Do initial option parsing. We have to do this before
+ // letting Gtk parse the arguments since we may need to spawn
+ // Xvfb first.
+ int argi = 1;
+ while (argi != argc)
+ {
+ if (std::strcmp(argv[argi], "--") == 0)
+ {
+ break;
+ }
+ else if (std::strcmp(argv[argi], "--help") == 0)
+ {
+ print_usage(std::cout, argv[0]);
+ return EXIT_SUCCESS;
+ }
+ else if (std::strcmp(argv[argi], "--preview") == 0)
+ {
+ preview_mode = true;
+ argi += 1;
+ }
+ else if (std::strcmp(argv[argi], "--video-std") == 0)
+ {
+ if (argi + 1 == argc)
+ {
+ std::cerr << "Missing argument to --video-std\n";
+ print_usage(std::cerr, argv[0]);
+ return EXIT_FAILURE;
+ }
+ frame_params = lookup_frame_params(argv[argi + 1]);
+ argi += 2;
+ }
+ else
+ {
+ argi += 1;
+ }
+ }
+
+ std::auto_ptr<x_frame_buffer> fb;
+ if (!preview_mode)
+ {
+ // Spawn Xvfb and set env variables so that Xlib will use it
+ // Use 8 bits each for RGB components, which should translate into
+ // "enough" bits for YUV components.
+ fb.reset(new x_frame_buffer(frame_params.width,
+ frame_params.height,
+ 3 * 8));
+ setenv("XAUTHORITY", fb->get_authority().c_str(), true);
+ setenv("DISPLAY", fb->get_display().c_str(), true);
+ }
+
+ // Initialise Gtk
+ Gtk::Main kit(argc, argv);
+
+ // Complete option parsing with Gtk's options out of the way.
+ argi = 1;
+ while (argi != argc)
+ {
+ if (std::strcmp(argv[argi], "--") == 0)
+ {
+ argi += 1;
+ break;
+ }
+ else if (std::strcmp(argv[argi], "--preview") == 0)
+ {
+ argi += 1;
+ }
+ else if (std::strcmp(argv[argi], "--video-std") == 0)
+ {
+ argi += 2;
+ }
+ else if (std::strcmp(argv[argi], "--save-temps") == 0)
+ {
+ temp_file::keep_all(true);
+ argi += 1;
+ }
+ else if (std::strcmp(argv[argi], "--encoder") == 0)
+ {
+ if (argi + 1 == argc)
+ {
+ std::cerr << "Missing argument to --encoder\n";
+ print_usage(std::cerr, argv[0]);
+ return EXIT_FAILURE;
+ }
+ if (std::strcmp(argv[argi + 1], "ffmpeg") == 0)
+ {
+ encoder = mpeg_encoder_ffmpeg;
+ }
+ else if (std::strcmp(argv[argi + 1], "mjpegtools-old") == 0)
+ {
+ encoder = mpeg_encoder_mjpegtools_old;
+ }
+ else if (std::strcmp(argv[argi + 1], "mjpegtools") == 0
+ || std::strcmp(argv[argi + 1], "mjpegtools-new") == 0)
+ {
+ encoder = mpeg_encoder_mjpegtools_new;
+ }
+ else
+ {
+ std::cerr << "Invalid argument to --encoder\n";
+ print_usage(std::cerr, argv[0]);
+ return EXIT_FAILURE;
+ }
+ argi += 2;
+ }
+ else if (argv[argi][0] == '-')
+ {
+ std::cerr << "Invalid option: " << argv[argi] << "\n";
+ print_usage(std::cerr, argv[0]);
+ return EXIT_FAILURE;
+ }
+ else
+ {
+ break;
+ }
+ }
+
+ // Look for a starting URL or filename and (except in preview
+ // mode) an output directory after the options.
+ if (argc - argi != (preview_mode ? 1 : 2))
+ {
+ print_usage(std::cerr, argv[0]);
+ return EXIT_FAILURE;
+ }
+ if (std::strstr(argv[argi], "://"))
+ {
+ // It appears to be an absolute URL, so use it as-is.
+ menu_url = argv[argi];
+ }
+ else
+ {
+ // Assume it's a filename. Resolve it to an absolute URL.
+ std::string path(argv[argi]);
+ if (!Glib::path_is_absolute(path))
+ path = Glib::build_filename(Glib::get_current_dir(), path);
+ menu_url = Glib::filename_to_uri(path);
+ }
+ if (!preview_mode)
+ output_dir = argv[argi + 1];
+
+ // Initialise Mozilla
+ browser_widget::initialiser browser_init;
+ set_browser_preferences();
+ if (!preview_mode)
+ null_prompt_service::install();
+
+ // Run the browser/converter
+ videolink_window window(frame_params, menu_url, output_dir, encoder);
+ window.show();
+ window.signal_hide().connect(SigC::slot(&Gtk::Main::quit));
+ Gtk::Main::run();
+
+ return ((preview_mode || window.is_finished())
+ ? EXIT_SUCCESS
+ : EXIT_FAILURE);
+ }
+ catch (std::exception & e)
+ {
+ std::cerr << "Fatal error: " << e.what() << "\n";
+ return EXIT_FAILURE;
+ }
+}
projects / videolink.git / commitdiff