X-Git-Url: https://git.decadent.org.uk/gitweb/?p=videolink.git;a=blobdiff_plain;f=webdvd.cpp;h=8019007deb4fda978bc7533328dbbdcd28bfb169;hp=eb2a9b2743d28a2a59bdd369af6ab072c25ae16f;hb=3fb06bde35cdcd9864329517f4548e1c5f0ad97c;hpb=ddc364c6916166aab0d2341e42efb35f925aada5 diff --git a/webdvd.cpp b/webdvd.cpp index eb2a9b2..8019007 100644 --- a/webdvd.cpp +++ b/webdvd.cpp @@ -53,6 +53,7 @@ #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" @@ -172,60 +173,6 @@ namespace } - struct dvd_contents - { - enum pgc_type { unknown_pgc, menu_pgc, title_pgc }; - - struct pgc_ref - { - explicit pgc_ref(pgc_type type = unknown_pgc, - int index = -1, - int sub_index = 0) - : type(type), index(index), sub_index(sub_index) - {} - bool operator==(const pgc_ref & other) const - { - return type == other.type && index == other.index; - } - bool operator!=(const pgc_ref & other) const - { - return !(*this == other); - } - - pgc_type type; // Menu or title reference? - unsigned index; // Menu or title index (within resp. vector) - unsigned sub_index; // Button or chapter number (1-based; 0 if - // unspecified; not compared!) - }; - - 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; - }; - - void generate_dvd(const dvd_contents & contents, - const std::string & output_dir); - class webdvd_window : public Gtk::Window { public: @@ -837,224 +784,6 @@ namespace } } - void generate_dvd(const dvd_contents & contents, - const std::string & output_dir) - { - 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: scratch - // g1: current location - // g12: location that last jumped 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; - - file << - "<dvdauthor>\n" - " <vmgm>\n" - " <menus>\n"; - - for (unsigned menu_num = 0; - menu_num != contents.menus.size(); - ++menu_num) - { - const dvd_contents::menu & menu = contents.menus[menu_num]; - - if (menu_num == 0) - { - // This is the first (title) menu, displayed when the - // disc is first played. - file << - " <pgc entry='title'>\n" - " <pre>\n" - // Initialise the current location if it is not set - // (all general registers are initially 0). - " if (g1 eq 0)\n" - " g1 = " << 1 + button_mult << ";\n"; - } - else - { - file << - " <pgc>\n" - " <pre>\n"; - } - - // When a title finishes or the user presses the menu - // button, this always jumps to the titleset's root menu. - // We want to return the user to the last menu they used. - // So we arrange for each titleset's root menu to return - // to the vmgm title menu and then dispatch from there to - // whatever the correct menu is. We determine the correct - // menu by looking at the menu part of g1. - - file << " g0 = g1 & " << menu_mask << ";\n"; - - // There is a limit of 128 VM instructions in each PGC. - // Therefore in each menu's <pre> section we generate - // jumps to menus with numbers greater by 512, 256, 128, - // ..., 1 where (a) such a menu exists, (b) this menu - // number is divisible by twice that increment and (c) the - // correct menu is that or a later menu. Thus each menu - // has at most 10 such conditional jumps and is reachable - // by at most 10 jumps from the title menu. This chain of - // jumps might take too long on some players; this has yet - // to be investigated. - - for (std::size_t menu_incr = (menu_mask + 1) / 2; - menu_incr != 0; - menu_incr /= 2) - { - if (menu_num + menu_incr < contents.menus.size() - && (menu_num & (menu_incr * 2 - 1)) == 0) - { - file << - " if (g0 ge " << 1 + menu_num + menu_incr - << ")\n" - " jump menu " << 1 + menu_num + menu_incr - << ";\n"; - } - } - - file << - // Highlight the appropriate button. - " s8 = g1 & " << button_mask << ";\n" - " </pre>\n" - " <vob file='" << menu.vob_temp->get_name() << "'/>\n"; - - for (unsigned button_num = 0; - button_num != menu.entries.size(); - ++button_num) - { - const dvd_contents::pgc_ref & target = - menu.entries[button_num]; - - file << " <button> "; - - if (target.type == dvd_contents::menu_pgc) - { - unsigned target_button_num; - - if (target.sub_index) - { - target_button_num = target.sub_index; - } - else - { - // Look for a button on the new menu that links - // back to this one. If there is one, set that to - // be the highlighted button; otherwise, use the - // first button. - const std::vector<dvd_contents::pgc_ref> & - target_menu_entries = - contents.menus[target.index].entries; - dvd_contents::pgc_ref this_pgc(dvd_contents::menu_pgc, - menu_num); - target_button_num = target_menu_entries.size(); - while (target_button_num != 0 - && (target_menu_entries[--target_button_num] - != this_pgc)) - ; - target_button_num += 1; - } - - file << "g1 = " - << (1 + target.index - + target_button_num * button_mult) - << "; jump menu " << 1 + target.index << ";"; - } - else - { - assert(target.type == dvd_contents::title_pgc); - - file << "g1 = " - << 1 + menu_num + (1 + button_num) * button_mult - << "; jump title " - << 1 + target.index; - if (target.sub_index) - file << " chapter " << target.sub_index; - file << ";"; - } - - 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 (unsigned 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 location. - " <pre> g12 = g1; </pre>\n" - << contents.titles[title_num].vob_list << - // If the menu location has not been changed during - // the title, set the location to be the following - // button in the menu. In any case, return to some - // 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"); - } - } - const video::frame_params & lookup_frame_params(const char * str) { assert(str);