X-Git-Url: https://git.decadent.org.uk/gitweb/?p=videolink.git;a=blobdiff_plain;f=webdvd.cpp;h=43f54c7021a703b8be936cb8280548239dfee6f0;hp=e3c02e90f271e757283ddf4f667d5ab8e5296193;hb=c13714f6498df33e02635421354f5fb88a60eb3d;hpb=cdd14ea76afc16f91e09323362468eaf5d0bcf9e diff --git a/webdvd.cpp b/webdvd.cpp index e3c02e9..43f54c7 100644 --- a/webdvd.cpp +++ b/webdvd.cpp @@ -1,4 +1,4 @@ -// Copyright 2005 Ben Hutchings . +// Copyright 2005-6 Ben Hutchings . // See the file "COPYING" for licence details. #include @@ -53,12 +53,14 @@ #include "browser_widget.hpp" #include "child_iterator.hpp" #include "dvd.hpp" +#include "generate_dvd.hpp" #include "link_iterator.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; @@ -142,35 +144,6 @@ namespace return result; } - struct dvd_contents - { - enum pgc_type { menu_pgc, title_pgc }; - typedef std::pair pgc_ref; - - struct menu - { - menu() - : vob_temp(new temp_file("webdvd-vob-")) - { - vob_temp->close(); - } - - boost::shared_ptr vob_temp; - std::vector entries; - }; - - struct title - { - explicit title(const std::string & vob_list) - : vob_list(vob_list) - {} - - std::string vob_list; - }; - - std::vector menus; - std::vector titles; - }; class webdvd_window : public Gtk::Window { @@ -185,12 +158,15 @@ namespace dvd_contents::pgc_ref add_title(const std::string & uri); void load_next_page(); 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); - void generate_dvd(); video::frame_params frame_params_; std::string output_dir_; @@ -266,33 +242,30 @@ namespace else { Glib::ustring hostname; - std::string filename(Glib::filename_from_uri(uri, hostname)); + std::string path(Glib::filename_from_uri(uri, hostname)); // FIXME: Should check the hostname - std::string vob_list; + vob_list list; // Store a reference to a linked VOB file, or the contents // of a linked VOB list file. - if (filename.compare(filename.size() - 4, 4, ".vob") == 0) + if (path.compare(path.size() - 4, 4, ".vob") == 0) { - if (!Glib::file_test(filename, Glib::FILE_TEST_IS_REGULAR)) + if (!Glib::file_test(path, Glib::FILE_TEST_IS_REGULAR)) throw std::runtime_error( - filename + " is missing or not a regular file"); - vob_list - .append("<vob file='") - // FIXME: Should XML-escape the path - .append(filename) - .append("'/>\n"); + path + " is missing or not a regular file"); + vob_ref ref; + ref.file = path; + list.push_back(ref); } else { - assert(filename.compare(filename.size() - 8, 8, ".voblist") - == 0); - // TODO: Validate the file contents - vob_list.assign(Glib::file_get_contents(filename)); + assert(path.compare(path.size() - 8, 8, ".voblist") == 0); + read_vob_list(path).swap(list); } - contents_.titles.push_back(dvd_contents::title(vob_list)); + contents_.titles.resize(contents_.titles.size() + 1); + contents_.titles.back().swap(list); return next_title; } } @@ -378,7 +351,7 @@ namespace pending_window_update_ = false; } - if (pending_req_count_ == 0 && !pending_window_update_) + if (!browser_is_busy()) { try { @@ -394,6 +367,15 @@ namespace 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(); + } } } @@ -426,7 +408,7 @@ namespace // Might need to wait a while for things to load or more // likely for a re-layout. - if (pending_req_count_ > 0) + if (browser_is_busy()) return true; } @@ -448,7 +430,7 @@ namespace page_queue_.pop(); if (page_queue_.empty()) { - generate_dvd(); + generate_dvd(contents_, output_dir_); return false; } else @@ -501,7 +483,7 @@ namespace temp_file links_temp; - int link_num; + unsigned link_num; link_iterator links_it, links_end; rectangle link_rect; @@ -552,7 +534,7 @@ namespace 0, 0, frame_params_.width, frame_params_.height }; - int menu_num = resource_map_[page_queue_.front()].second; + unsigned menu_num = resource_map_[page_queue_.front()].index; for (/* no initialisation */; state->links_it != state->links_end; @@ -560,19 +542,24 @@ namespace { nsCOMPtr<nsIDOMNode> node(*state->links_it); - // Find the link URI. + // Find the link URI and separate any fragment from it. nsCOMPtr<nsILink> link(do_QueryInterface(node)); assert(link); - nsCOMPtr<nsIURI> uri; - check(link->GetHrefURI(getter_AddRefs(uri))); - std::string uri_string; + nsCOMPtr<nsIURI> uri_iface; + check(link->GetHrefURI(getter_AddRefs(uri_iface))); + std::string uri_and_fragment, uri, fragment; { - nsCString uri_ns_string; - check(uri->GetSpec(uri_ns_string)); - uri_string.assign(uri_ns_string.BeginReading(), - uri_ns_string.EndReading()); + 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); } - std::string uri_sans_fragment(uri_string, 0, uri_string.find('#')); // Is this a new link? if (!state->link_changing) @@ -587,18 +574,19 @@ namespace if (state->link_rect.empty()) { std::cerr << "Ignoring invisible link to " - << uri_string << "\n"; + << uri_and_fragment << "\n"; continue; } ++state->link_num; - if (state->link_num >= dvd::menu_buttons_max) + if (state->link_num >= unsigned(dvd::menu_buttons_max)) { - if (state->link_num == 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_string << "\n"; + std::cerr << "Ignoring link to " << uri_and_fragment + << "\n"; continue; } @@ -611,32 +599,33 @@ namespace // 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. - nsCString path; - check(uri->GetPath(path)); - dvd_contents::pgc_ref dest_pgc; + 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 ((path.Length() > 4 - && std::strcmp(path.EndReading() - 4, ".vob") == 0) - || (path.Length() > 8 - && std::strcmp(path.EndReading() - 8, ".voblist") - == 0)) + 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->SchemeIs("file", &is_file)); + check(uri_iface->SchemeIs("file", &is_file)); if (!is_file) { std::cerr << "Links to video must use the file:" << " scheme\n"; continue; } - dest_pgc = add_title(uri_sans_fragment); + target = add_title(uri); + target.sub_index = + std::strtoul(fragment.c_str(), NULL, 10); } else { - dest_pgc = add_menu(uri_sans_fragment); + 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(dest_pgc); + contents_.menus[menu_num].entries.push_back(target); nsCOMPtr<nsIContent> content(do_QueryInterface(node)); assert(content); @@ -685,7 +674,7 @@ namespace // We may have to exit and wait for image loading // to complete, at which point we will be called // again. - if (pending_req_count_ > 0) + if (browser_is_busy()) { state->link_changing = true; page_state_ = state; @@ -765,249 +754,6 @@ namespace } } - void generate_menu_dispatch(std::ostream &, int indent, - int first_menu, int last_menu); - - void webdvd_window::generate_dvd() - { - temp_file temp("webdvd-dvdauthor-"); - temp.close(); - std::ofstream file(temp.get_name().c_str()); - - // We generate code that uses registers in the following way: - // - // g0: button destination (when jumping to menu 1), then scratch - // g1: current location - // g2-g11: location history (g2 = most recent) - // g12: location that last linked to a video - // - // All locations are divided into two bitfields: the least - // significant 10 bits are a page/menu number and the most - // significant 6 bits are a link/button number, and numbering - // starts at 1, not 0. This is done for compatibility with - // the encoding of the s8 (button) register. - // - static const int button_mult = dvd::reg_s8_button_mult; - static const int menu_mask = button_mult - 1; - static const int button_mask = (1 << dvd::reg_bits) - button_mult; - static const int location_bias = button_mult + 1; - - file << - "<dvdauthor>\n" - " <vmgm>\n" - " <menus>\n"; - - for (std::size_t menu_num = 0; - menu_num != contents_.menus.size(); - ++menu_num) - { - dvd_contents::menu & menu = contents_.menus[menu_num]; - - if (menu_num == 0) - { - // This is the first (title) menu, which needs to include - // initialisation and dispatch code. - - file << - " <pgc entry='title'>\n" - " <pre>\n" - // Has the location been set yet? - " if (g1 eq 0)\n" - " {\n" - // Initialise the current location to first button on - // this menu. - " g1 = " << location_bias << ";\n" - " }\n" - " else\n" - " {\n" - // Has the user selected a link? - " if (g0 ne 0)\n" - " {\n" - // First update the history. - // Does link go to the last page in the history? - " if (((g0 ^ g2) & " << menu_mask - << ") == 0)\n" - // It does; we treat this as going back and pop the old - // location off the history stack into the current - // location. Clear the free stack slot. - " {\n" - " g1 = g2; g2 = g3; g3 = g4; g4 = g5;\n" - " g5 = g6; g6 = g7; g7 = g8; g8 = g9;\n" - " g9 = g10; g10 = g11; g11 = 0;\n" - " }\n" - " else\n" - // Link goes to some other page, so push current - // location onto the history stack and set the current - // location to be exactly the target location. - " {\n" - " g11 = g10; g10 = g9; g9 = g8; g8 = g7;\n" - " g7 = g6; g6 = g5; g5 = g4; g4 = g3;\n" - " g3 = g2; g2 = g1; g1 = g0;\n" - " }\n" - " }\n" - // Find the target page number. - " g0 = g1 & " << menu_mask << ";\n"; - // There seems to be no way to perform a computed jump, - // so we generate all possible jumps and a binary search - // to select the correct one. - generate_menu_dispatch(file, 12, - 0, contents_.menus.size() - 1); - file << - " }\n"; - } - else // menu_num != 0 - { - file << - " <pgc>\n" - " <pre>\n"; - } - - file << - // Clear link indicator and highlight the - // appropriate link/button. - " g0 = 0; s8 = g1 & " << button_mask << ";\n" - " </pre>\n" - " <vob file='" - << menu.vob_temp->get_name() << "'/>\n"; - - for (std::size_t button_num = 0; - button_num != menu.entries.size(); - ++button_num) - { - file << " <button> " - // Update current location. - " g1 = " - << location_bias + button_num * button_mult + menu_num - << ";"; - - // Jump to appropriate resource. - if (menu.entries[button_num].first == dvd_contents::menu_pgc) - { - file << " g0 = " - << location_bias + menu.entries[button_num].second - << "; jump menu 1;"; - } - else - { - assert(menu.entries[button_num].first - == dvd_contents::title_pgc); - file << " jump title " - << 1 + menu.entries[button_num].second << ";"; - } - - file << " </button>\n"; - } - - file << " </pgc>\n"; - } - - file << - " </menus>\n" - " </vmgm>\n"; - - // Generate a titleset for each title. This appears to make - // jumping to titles a whole lot simpler (but limits us to 99 - // titles). - for (std::size_t title_num = 0; - title_num != contents_.titles.size(); - ++title_num) - { - file << - " <titleset>\n" - // Generate a dummy menu so that the menu button on the - // remote control will work. - " <menus>\n" - " <pgc entry='root'>\n" - " <pre> jump vmgm menu; </pre>\n" - " </pgc>\n" - " </menus>\n" - " <titles>\n" - " <pgc>\n" - // Record calling page/menu. - " <pre> g12 = g1; </pre>\n" - << contents_.titles[title_num].vob_list << - // If page/menu location has not been changed during the - // video, change the location to be the following - // link/button when returning to it. In any case, - // return to a page/menu. - " <post> if (g1 eq g12) g1 = g1 + " << button_mult - << "; call menu; </post>\n" - " </pgc>\n" - " </titles>\n" - " </titleset>\n"; - } - - file << - "</dvdauthor>\n"; - - file.close(); - - { - const char * argv[] = { - "dvdauthor", - "-o", output_dir_.c_str(), - "-x", temp.get_name().c_str(), - 0 - }; - int command_result; - Glib::spawn_sync(".", - Glib::ArrayHandle<std::string>( - argv, sizeof(argv)/sizeof(argv[0]), - Glib::OWNERSHIP_NONE), - Glib::SPAWN_SEARCH_PATH - | Glib::SPAWN_STDOUT_TO_DEV_NULL, - SigC::Slot0<void>(), - 0, 0, - &command_result); - if (command_result != 0) - throw std::runtime_error("dvdauthor failed"); - } - } - - void generate_menu_dispatch(std::ostream & file, int indent, - int first_menu, int last_menu) - { - if (first_menu == last_menu) - { - if (first_menu == 0) - { - // This dispatch code is generated *on* the first menu - // so don't create an infinite loop. - } - else - { - file << std::setw(indent) << "" - << "jump menu " << 1 + first_menu << ";\n"; - } - } - else // first_menu != last_menu - { - if (first_menu == 0 && last_menu == 1) - { - // dvdauthor doesn't allow empty blocks or null - // statements so when selecting between the first 2 - // menus we don't use an "else" part. We must use - // braces so that a following "else" will match the - // right "if". - file << std::setw(indent) << "" << "{\n" - << std::setw(indent) << "" << "if (g0 eq 2)\n" - << std::setw(indent + 2) << "" << "jump menu 2;\n" - << std::setw(indent) << "" << "}\n"; - } - else - { - int middle = (first_menu + last_menu) / 2; - file << std::setw(indent) << "" << "if (g0 le " << 1 + middle - << ")\n"; - generate_menu_dispatch(file, indent + 2, - first_menu, middle); - file << std::setw(indent) << "" << "else\n"; - generate_menu_dispatch(file, indent + 2, - middle + 1, last_menu); - } - } - } - const video::frame_params & lookup_frame_params(const char * str) { assert(str); @@ -1040,16 +786,17 @@ namespace void set_browser_preferences() { - // 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) 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( @@ -1057,9 +804,17 @@ namespace true)); # endif - // TODO: Set display resolution? Unfortunately Mozilla doesn't - // support non-square pixels (and neither do fontconfig or Xft - // anyway). + // 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 higher (PAL/SECAM) or lower (NTSC), 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