dolphin/Source/Core/DiscIO/VolumeGC.cpp

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// Copyright 2008 Dolphin Emulator Project
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// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <cinttypes>
#include <cstddef>
#include <map>
#include <memory>
#include <optional>
#include <string>
#include <utility>
#include <vector>
#include "Common/Assert.h"
#include "Common/ColorUtil.h"
#include "Common/CommonTypes.h"
#include "Common/Logging/Log.h"
#include "Common/MsgHandler.h"
#include "Common/StringUtil.h"
#include "DiscIO/Blob.h"
#include "DiscIO/DiscExtractor.h"
#include "DiscIO/Enums.h"
#include "DiscIO/FileSystemGCWii.h"
#include "DiscIO/Filesystem.h"
#include "DiscIO/Volume.h"
#include "DiscIO/VolumeGC.h"
namespace DiscIO
{
VolumeGC::VolumeGC(std::unique_ptr<BlobReader> reader) : m_pReader(std::move(reader))
{
_assert_(m_pReader);
m_file_system = [this]() -> std::unique_ptr<FileSystem> {
auto file_system = std::make_unique<FileSystemGCWii>(this, PARTITION_NONE);
return file_system->IsValid() ? std::move(file_system) : nullptr;
};
m_converted_banner = [this] { return LoadBannerFile(); };
}
VolumeGC::~VolumeGC()
{
}
bool VolumeGC::Read(u64 _Offset, u64 _Length, u8* _pBuffer, const Partition& partition) const
{
if (partition != PARTITION_NONE)
return false;
return m_pReader->Read(_Offset, _Length, _pBuffer);
}
const FileSystem* VolumeGC::GetFileSystem(const Partition& partition) const
{
return m_file_system->get();
}
std::string VolumeGC::GetGameID(const Partition& partition) const
{
static const std::string NO_UID("NO_UID");
char ID[6];
if (!Read(0, sizeof(ID), reinterpret_cast<u8*>(ID), partition))
{
PanicAlertT("Failed to read unique ID from disc image");
return NO_UID;
}
return DecodeString(ID);
}
Region VolumeGC::GetRegion() const
{
const std::optional<u32> region_code = ReadSwapped<u32>(0x458, PARTITION_NONE);
if (!region_code)
return Region::UNKNOWN_REGION;
const Region region = static_cast<Region>(*region_code);
return region <= Region::PAL ? region : Region::UNKNOWN_REGION;
}
Country VolumeGC::GetCountry(const Partition& partition) const
{
// The 0 that we use as a default value is mapped to COUNTRY_UNKNOWN and UNKNOWN_REGION
const u8 country = ReadSwapped<u8>(3, partition).value_or(0);
const Region region = GetRegion();
// Korean GC releases use NTSC-J.
// E is normally used for America, but it's also used for English-language Korean GC releases.
// K is used by games that are in the Korean language.
// W means Taiwan for Wii games, but on the GC, it's used for English-language Korean releases.
// (There doesn't seem to be any pattern to which of E and W is used for Korean GC releases.)
if (region == Region::NTSC_J && (country == 'E' || country == 'K' || country == 'W'))
return Country::COUNTRY_KOREA;
if (RegionSwitchGC(country) != region)
return TypicalCountryForRegion(region);
return CountrySwitch(country);
}
std::string VolumeGC::GetMakerID(const Partition& partition) const
{
char makerID[2];
if (!Read(0x4, 0x2, (u8*)&makerID, partition))
return std::string();
return DecodeString(makerID);
}
std::optional<u16> VolumeGC::GetRevision(const Partition& partition) const
{
std::optional<u8> revision = ReadSwapped<u8>(7, partition);
return revision ? *revision : std::optional<u16>();
}
std::string VolumeGC::GetInternalName(const Partition& partition) const
{
char name[0x60];
if (Read(0x20, 0x60, (u8*)name, partition))
return DecodeString(name);
return "";
}
std::map<Language, std::string> VolumeGC::GetShortNames() const
{
return m_converted_banner->short_names;
}
std::map<Language, std::string> VolumeGC::GetLongNames() const
{
return m_converted_banner->long_names;
}
std::map<Language, std::string> VolumeGC::GetShortMakers() const
{
return m_converted_banner->short_makers;
}
std::map<Language, std::string> VolumeGC::GetLongMakers() const
{
return m_converted_banner->long_makers;
}
std::map<Language, std::string> VolumeGC::GetDescriptions() const
{
return m_converted_banner->descriptions;
}
std::vector<u32> VolumeGC::GetBanner(int* width, int* height) const
{
*width = m_converted_banner->image_width;
*height = m_converted_banner->image_height;
return m_converted_banner->image_buffer;
}
std::string VolumeGC::GetApploaderDate(const Partition& partition) const
{
char date[16];
if (!Read(0x2440, 0x10, (u8*)&date, partition))
return std::string();
return DecodeString(date);
}
BlobType VolumeGC::GetBlobType() const
{
return m_pReader->GetBlobType();
}
u64 VolumeGC::GetSize() const
{
return m_pReader->GetDataSize();
}
u64 VolumeGC::GetRawSize() const
{
return m_pReader->GetRawSize();
}
std::optional<u8> VolumeGC::GetDiscNumber(const Partition& partition) const
{
return ReadSwapped<u8>(6, partition);
}
Platform VolumeGC::GetVolumeType() const
{
return Platform::GAMECUBE_DISC;
}
VolumeGC::ConvertedGCBanner VolumeGC::LoadBannerFile() const
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{
GCBanner banner_file;
const u64 file_size = ReadFile(*this, PARTITION_NONE, "opening.bnr",
reinterpret_cast<u8*>(&banner_file), sizeof(GCBanner));
if (file_size < 4)
{
WARN_LOG(DISCIO, "Could not read opening.bnr.");
return {}; // Return early so that we don't access the uninitialized banner_file.id
}
constexpr u32 BNR1_MAGIC = 0x31524e42;
constexpr u32 BNR2_MAGIC = 0x32524e42;
bool is_bnr1;
if (banner_file.id == BNR1_MAGIC && file_size == BNR1_SIZE)
{
is_bnr1 = true;
}
else if (banner_file.id == BNR2_MAGIC && file_size == BNR2_SIZE)
{
is_bnr1 = false;
}
else
{
WARN_LOG(DISCIO, "Invalid opening.bnr. Type: %0x Size: %0" PRIx64, banner_file.id, file_size);
return {};
}
return ExtractBannerInformation(banner_file, is_bnr1);
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}
VolumeGC::ConvertedGCBanner VolumeGC::ExtractBannerInformation(const GCBanner& banner_file,
bool is_bnr1) const
{
ConvertedGCBanner banner;
u32 number_of_languages = 0;
Language start_language = Language::LANGUAGE_UNKNOWN;
if (is_bnr1) // NTSC
{
bool is_japanese = GetRegion() == Region::NTSC_J;
number_of_languages = 1;
start_language = is_japanese ? Language::LANGUAGE_JAPANESE : Language::LANGUAGE_ENGLISH;
}
else // PAL
{
number_of_languages = 6;
start_language = Language::LANGUAGE_ENGLISH;
}
banner.image_width = GC_BANNER_WIDTH;
banner.image_height = GC_BANNER_HEIGHT;
banner.image_buffer = std::vector<u32>(GC_BANNER_WIDTH * GC_BANNER_HEIGHT);
ColorUtil::decode5A3image(banner.image_buffer.data(), banner_file.image, GC_BANNER_WIDTH,
GC_BANNER_HEIGHT);
for (u32 i = 0; i < number_of_languages; ++i)
{
const GCBannerInformation& info = banner_file.information[i];
Language language = static_cast<Language>(static_cast<int>(start_language) + i);
std::string description = DecodeString(info.description);
if (!description.empty())
banner.descriptions.emplace(language, description);
std::string short_name = DecodeString(info.short_name);
if (!short_name.empty())
banner.short_names.emplace(language, short_name);
std::string long_name = DecodeString(info.long_name);
if (!long_name.empty())
banner.long_names.emplace(language, long_name);
std::string short_maker = DecodeString(info.short_maker);
if (!short_maker.empty())
banner.short_makers.emplace(language, short_maker);
std::string long_maker = DecodeString(info.long_maker);
if (!long_maker.empty())
banner.long_makers.emplace(language, long_maker);
}
return banner;
}
VolumeGC::ConvertedGCBanner::ConvertedGCBanner() = default;
VolumeGC::ConvertedGCBanner::~ConvertedGCBanner() = default;
} // namespace