mirror of
https://github.com/RetroDECK/Supermodel.git
synced 2024-11-22 13:55:38 +00:00
429 lines
15 KiB
C++
429 lines
15 KiB
C++
#include "GameLoader.h"
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#include "OSD/Logger.h"
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#include "Util/NewConfig.h"
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#include "Util/ConfigBuilders.h"
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#include "Util/ByteSwap.h"
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#include <algorithm>
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#include <iostream>
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bool GameLoader::LoadZipArchive(ZipArchive *zip, const std::string &zipfilename) const
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{
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zip->zipfilename = zipfilename;
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zip->zf = unzOpen(zipfilename.c_str());
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if (NULL == zip->zf)
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{
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ErrorLog("Could not open '%s'.", zipfilename.c_str());
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return true;
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}
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// Identify all files in zip archive
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int err = UNZ_OK;
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for (err = unzGoToFirstFile(zip->zf); err == UNZ_OK; err = unzGoToNextFile(zip->zf))
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{
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unz_file_info file_info;
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char filename_buffer[256];
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if (UNZ_OK != unzGetCurrentFileInfo(zip->zf, &file_info, filename_buffer, sizeof(filename_buffer), NULL, 0, NULL, 0))
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continue;
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zip->files_by_crc[file_info.crc].filename = filename_buffer;
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zip->files_by_crc[file_info.crc].uncompressed_size = file_info.uncompressed_size;
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zip->files_by_crc[file_info.crc].crc32 = file_info.crc;
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}
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if (err != UNZ_END_OF_LIST_OF_FILE)
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{
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ErrorLog("Unable to read the contents of '%s' (code 0x%x).", zipfilename.c_str(), err);
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return true;
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}
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return false;
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}
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bool GameLoader::LoadZippedFile(std::shared_ptr<uint8_t> *buffer, size_t *file_size, const GameLoader::File::ptr_t &file, const ZipArchive &zip)
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{
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// Locate file
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const ZippedFile *zipped_file = LookupFile(file, zip);
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if (!zipped_file)
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return true;
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if (UNZ_OK != unzLocateFile(zip.zf, zipped_file->filename.c_str(), 2))
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{
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ErrorLog("Unable to locate '%s' in '%s'. Is zip file corrupt?", zipped_file->filename.c_str(), zip.zipfilename.c_str());
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return true;
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}
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// Read it in
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if (UNZ_OK != unzOpenCurrentFile(zip.zf))
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{
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ErrorLog("Unable to read '%s' from '%s'. Is zip file corrupt?", zipped_file->filename.c_str(), zip.zipfilename.c_str());
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return true;
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}
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*file_size = zipped_file->uncompressed_size;
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buffer->reset(new uint8_t[*file_size], std::default_delete<uint8_t[]>());
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ZPOS64_T bytes_read = unzReadCurrentFile(zip.zf, buffer->get(), *file_size);
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if (bytes_read != *file_size)
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{
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ErrorLog("Unable to read '%s' from '%s'. Is zip file corrupt?", zipped_file->filename.c_str(), zip.zipfilename.c_str());
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unzCloseCurrentFile(zip.zf);
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return true;
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}
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// And close it
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if (UNZ_CRCERROR == unzCloseCurrentFile(zip.zf))
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ErrorLog("CRC error reading '%s' from '%s'. File may be corrupt.", zipped_file->filename.c_str(), zip.zipfilename.c_str());
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return false;
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}
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const GameLoader::ZippedFile *GameLoader::LookupFile(const File::ptr_t &file, const ZipArchive &zip) const
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{
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if (file->has_crc32)
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{
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auto it = zip.files_by_crc.find(file->crc32);
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if (it == zip.files_by_crc.end())
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{
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ErrorLog("'%s' with CRC32 0x%08x not found in '%s'.", file->filename.c_str(), file->crc32, zip.zipfilename.c_str());
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return nullptr;
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}
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return &it->second;
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}
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// Try to lookup by name
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for (auto &v: zip.files_by_crc)
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{
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if (Util::ToLower(v.second.filename) == file->filename)
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return &v.second;
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}
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ErrorLog("'%s' not found in '%s'.", file->filename.c_str(), zip.zipfilename.c_str());
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return nullptr;
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}
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bool GameLoader::MissingAttrib(const GameLoader &loader, const Util::Config::Node &node, const std::string &attribute)
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{
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if (node[attribute].Empty())
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{
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ErrorLog("%s: <%s> tag is missing required attribute '%s'.", loader.m_xml_filename.c_str(), node.Key().c_str(), attribute.c_str());
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return true;
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}
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return false;
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}
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GameLoader::File::ptr_t GameLoader::File::Create(const GameLoader &loader, const Util::Config::Node &file_node)
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{
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if (GameLoader::MissingAttrib(loader, file_node, "name") | GameLoader::MissingAttrib(loader, file_node, "offset"))
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return ptr_t();
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ptr_t file = std::make_shared<File>();
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file->offset = file_node["offset"].ValueAs<uint32_t>();
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file->filename = Util::ToLower(file_node["name"].ValueAs<std::string>());
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file->has_crc32 = file_node["crc32"].Exists();
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file->crc32 = file->has_crc32 ? file_node["crc32"].ValueAs<uint32_t>() : 0;
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return file;
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}
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bool GameLoader::File::Matches(const std::string &filename_to_match, uint32_t crc32_to_match) const
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{
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if (has_crc32)
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return crc32_to_match == crc32;
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return Util::ToLower(filename_to_match) == filename;
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}
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GameLoader::Region::ptr_t GameLoader::Region::Create(const GameLoader &loader, const Util::Config::Node ®ion_node)
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{
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if (GameLoader::MissingAttrib(loader, region_node, "name") | MissingAttrib(loader, region_node, "stride") | GameLoader::MissingAttrib(loader, region_node, "chunk_size"))
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return ptr_t();
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ptr_t region = std::make_shared<Region>();
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region->region_name = region_node["name"].Value<std::string>();
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region->stride = region_node["stride"].ValueAs<size_t>();
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region->chunk_size = region_node["chunk_size"].ValueAs<size_t>();
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region->byte_swap = region_node["byte_swap"].ValueAsDefault<bool>(false);
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return region;
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}
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static void PopulateGameInfo(Game *game, const Util::Config::Node &game_node)
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{
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game->name = game_node["name"].ValueAs<std::string>();
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game->parent = game_node["parent"].ValueAsDefault<std::string>(std::string());
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game->title = game_node["identity/title"].ValueAsDefault<std::string>("Unknown");
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game->version = game_node["identity/version"].ValueAsDefault<std::string>("");
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game->manufacturer = game_node["identity/manufacturer"].ValueAsDefault<std::string>("Unknown");
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game->year = game_node["identity/year"].ValueAsDefault<unsigned>(0);
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game->stepping = game_node["hardware/stepping"].ValueAsDefault<std::string>("");
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game->mpeg_board = game_node["hardware/mpeg_board"].ValueAsDefault<std::string>("");
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game->encryption_key = game_node["hardware/encryption_key"].ValueAsDefault<uint32_t>(0);
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std::map<std::string, uint32_t> input_flags
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{
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{ "common", Game::INPUT_COMMON },
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{ "vehicle", Game::INPUT_VEHICLE },
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{ "joystick1", Game::INPUT_JOYSTICK1 },
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{ "joystick2", Game::INPUT_JOYSTICK2 },
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{ "fighting", Game::INPUT_FIGHTING },
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{ "vr4", Game::INPUT_VR4 },
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{ "viewchange", Game::INPUT_VIEWCHANGE },
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{ "shift4", Game::INPUT_SHIFT4 },
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{ "shiftupdown", Game::INPUT_SHIFTUPDOWN },
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{ "handbrake", Game::INPUT_HANDBRAKE },
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{ "harley", Game::INPUT_HARLEY },
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{ "gun1", Game::INPUT_GUN1 },
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{ "gun2", Game::INPUT_GUN2 },
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{ "analog_joystick", Game::INPUT_ANALOG_JOYSTICK },
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{ "twin_joysticks", Game::INPUT_TWIN_JOYSTICKS },
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{ "soccer", Game::INPUT_SOCCER },
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{ "spikeout", Game::INPUT_SPIKEOUT },
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{ "analog_gun1", Game::INPUT_ANALOG_GUN1 },
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{ "analog_gun2", Game::INPUT_ANALOG_GUN2 },
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{ "ski", Game::INPUT_SKI },
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{ "magtruck", Game::INPUT_MAGTRUCK },
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{ "fishing", Game::INPUT_FISHING }
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};
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for (auto &node: game_node["hardware/inputs"])
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{
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if (node.Key() == "input" && node["type"].Exists())
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{
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const std::string input_type = node["type"].ValueAs<std::string>();
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game->inputs |= input_flags[input_type];
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}
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}
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}
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bool GameLoader::ParseXML(const Util::Config::Node &xml)
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{
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for (auto it = xml.begin(); it != xml.end(); ++it)
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{
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// Game node
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auto &game_node = *it;
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if (game_node.Key() != "game")
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continue;
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if (game_node["name"].Empty())
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{
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//TODO: associate line numbers in config
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//ErrorLog("%s: Ignoring <game> tag with missing 'name' attribute.", m_xml_filename.c_str());
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continue;
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}
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std::string game_name = game_node["name"].ValueAs<std::string>();
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if (m_regions_by_game.find(game_name) != m_regions_by_game.end())
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{
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ErrorLog("%s: Ignoring redefinition of game '%s'.", m_xml_filename.c_str(), game_name.c_str());
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continue;
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}
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RegionsByName_t ®ions_by_name = m_regions_by_game[game_name];
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PopulateGameInfo(&m_game_info_by_game[game_name], game_node);
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for (auto &roms_node: game_node)
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{
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if (roms_node.Key() != "roms")
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continue;
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/*
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* Regions define contiguous memory areas that individual ROM files are
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* loaded into. It is possible to have multiple region tags identifying
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* the same region. They will be aggregated. This is useful for parent
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* and child ROM sets, which each may need to define the same region,
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* with the child set loading in different files to overwrite the parent
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* set.
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*/
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for (auto ®ion_node: roms_node)
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{
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if (region_node.Key() != "region")
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continue;
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// Look up region structure or create new one if needed
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std::string region_name = region_node["name"].Value<std::string>();
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auto it = regions_by_name.find(region_name);
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Region::ptr_t region = (it != regions_by_name.end()) ? it->second : Region::Create(*this, region_node);
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if (!region)
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continue;
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/*
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* Files are defined by the offset they are loaded at. Normally, there
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* should be one file per offset but parent/child ROM sets will violate
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* this, and so it is allowed.
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*/
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std::vector<File::ptr_t> &files = region->files;
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for (auto &file_node: region_node)
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{
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if (file_node.Key() != "file")
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continue;
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File::ptr_t file = File::Create(*this, file_node);
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if (!file)
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continue;
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files.push_back(file);
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}
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// Check to ensure that some files were defined in the region
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if (files.empty())
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ErrorLog("%s: No files defined in region '%s' of '%s'.", m_xml_filename.c_str(), region->region_name.c_str(), game_name.c_str());
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else
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regions_by_name[region->region_name] = region;
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}
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}
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// Check to ensure that some ROM regions were defined for the game
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if (regions_by_name.empty())
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ErrorLog("%s: No ROM regions defined for '%s'.", m_xml_filename.c_str(), game_name.c_str());
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}
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// Check to ensure some games were defined
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if (m_regions_by_game.empty())
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{
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ErrorLog("%s: No games defined.", m_xml_filename.c_str());
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return true;
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}
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return false;
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}
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std::set<std::string> GameLoader::IdentifyGamesFileBelongsTo(const std::string &filename, uint32_t crc32) const
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{
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std::set<std::string> games;
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for (auto &v_game: m_regions_by_game)
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{
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const std::string &game_name = v_game.first;
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auto ®ions_by_name = v_game.second;
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for (auto &v_region: regions_by_name)
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{
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Region::ptr_t region = v_region.second;
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for (auto file: region->files)
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{
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if (file->Matches(filename, crc32))
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games.insert(game_name);
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}
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}
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}
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return games;
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}
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std::vector<std::string> GameLoader::IdentifyGamesInZipArchive(const ZipArchive &zip) const
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{
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std::map<std::string, size_t> files_per_game;
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std::set<std::string> all_games_found;
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for (auto &v: zip.files_by_crc)
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{
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std::set<std::string> games = IdentifyGamesFileBelongsTo(v.second.filename, v.first);
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all_games_found.insert(games.begin(), games.end());
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for (auto &game: games)
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{
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files_per_game[game]++;
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}
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}
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std::vector<std::string> sorted_games_found(all_games_found.begin(), all_games_found.end());
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std::sort(sorted_games_found.begin(), sorted_games_found.end(),
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[&files_per_game](const std::string &a, const std::string &b)
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{
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return files_per_game[a] > files_per_game[b]; // sort descending order
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});
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return sorted_games_found;
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}
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bool GameLoader::ComputeRegionSize(uint32_t *region_size, const GameLoader::Region::ptr_t ®ion, const ZipArchive &zip) const
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{
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// Files in region need not be loaded contiguously. To find region size,
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// use maximum end_addr = offset + stride * (num_chunks - 1) + chunk_size.
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std::vector<uint32_t> end_addr;
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bool error = false;
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for (auto file: region->files)
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{
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const ZippedFile *zipped_file = LookupFile(file, zip);
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if (zipped_file)
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{
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if (zipped_file->uncompressed_size % region->chunk_size != 0)
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{
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ErrorLog("File '%s' in '%s' is not sized in %d-byte chunks.", zipped_file->filename.c_str(), zip.zipfilename.c_str(), region->chunk_size);
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error = true;
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}
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uint32_t num_chunks = (uint32_t)(zipped_file->uncompressed_size / region->chunk_size);
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end_addr.push_back(file->offset + region->stride * (num_chunks - 1) + region->chunk_size);
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}
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else
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error = true;
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}
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if (!error)
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*region_size = *std::max_element(end_addr.begin(), end_addr.end());
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return error;
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}
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bool GameLoader::LoadRegion(ROM *rom, const GameLoader::Region::ptr_t ®ion, const ZipArchive &zip)
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{
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bool error = false;
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for (auto &file: region->files)
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{
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std::shared_ptr<uint8_t> tmp;
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size_t file_size;
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error |= LoadZippedFile(&tmp, &file_size, file, zip);
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if (!error)
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{
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size_t num_chunks = file_size / region->chunk_size;
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for (size_t i = 0; i < num_chunks; i++)
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{
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uint8_t *dest = rom->data.get() + file->offset + i * region->stride;
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uint8_t *src = tmp.get() + i * region->chunk_size;
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memcpy(dest, src, region->chunk_size);
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}
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}
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}
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if (region->byte_swap)
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Util::FlipEndian16(rom->data.get(), rom->size);
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return error;
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}
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bool GameLoader::LoadROMs(ROMSet *rom_set, const std::string &game_name, const ZipArchive &zip)
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{
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auto it = m_regions_by_game.find(game_name);
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if (it == m_regions_by_game.end())
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{
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ErrorLog("Game '%s' not found in '%s'.", game_name.c_str(), zip.zipfilename.c_str());
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return true;
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}
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bool error = false;
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auto ®ions_by_name = it->second;
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for (auto &v_region: regions_by_name)
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{
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auto ®ion = v_region.second;
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uint32_t region_size = 0;
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if (ComputeRegionSize(®ion_size, region, zip))
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error |= true;
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else
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{
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auto &rom = rom_set->rom_by_region[region->region_name];
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rom.size = region_size;
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rom.data.reset(new uint8_t[region_size], std::default_delete<uint8_t[]>());
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error |= LoadRegion(&rom, region, zip);
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}
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}
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return error;
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}
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bool GameLoader::LoadDefinitionXML(const std::string &filename)
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{
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m_xml_filename = filename;
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Util::Config::Node xml("xml");
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if (Util::Config::FromXMLFile(&xml, filename))
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return true;
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return ParseXML(xml);
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}
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bool GameLoader::Load(Game *game, ROMSet *rom_set, const std::string &zipfilename)
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{
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*game = Game();
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// Load the zip file and identify all games in it
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ZipArchive zip;
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if (LoadZipArchive(&zip, zipfilename))
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return true;
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std::vector<std::string> games_found = IdentifyGamesInZipArchive(zip);
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if (games_found.empty())
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{
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ErrorLog("No valid Model 3 ROMs found in '%s'.", zipfilename.c_str());
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return true;
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}
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else if (games_found.size() > 1)
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ErrorLog("Files for multiple games found in '%s' (%s). Loading '%s'.", zipfilename.c_str(), std::string(Util::Format(", ").Join(games_found)).c_str(), games_found[0].c_str());
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// Load the top game by file count
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*game = m_game_info_by_game[games_found[0]];
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bool error = LoadROMs(rom_set, games_found[0], zip);
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if (error)
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*game = Game();
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return error;
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}
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GameLoader::GameLoader(const std::string &xml_file)
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{
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LoadDefinitionXML(xml_file);
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}
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