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 <cstddef>
#include <map>
#include <memory>
#include <string>
#include <vector>
#include "Common/ColorUtil.h"
#include "Common/CommonTypes.h"
#include "Common/StringUtil.h"
#include "Common/Logging/Log.h"
#include "DiscIO/Blob.h"
#include "DiscIO/FileMonitor.h"
#include "DiscIO/Filesystem.h"
#include "DiscIO/Volume.h"
#include "DiscIO/VolumeGC.h"
namespace DiscIO
{
CVolumeGC::CVolumeGC(IBlobReader* _pReader)
: m_pReader(_pReader)
{}
CVolumeGC::~CVolumeGC()
{
}
bool CVolumeGC::Read(u64 _Offset, u64 _Length, u8* _pBuffer, bool decrypt) const
{
if (decrypt)
PanicAlertT("Tried to decrypt data from a non-Wii volume");
if (m_pReader == nullptr)
return false;
FileMon::FindFilename(_Offset);
return m_pReader->Read(_Offset, _Length, _pBuffer);
}
std::string CVolumeGC::GetUniqueID() const
{
static const std::string NO_UID("NO_UID");
if (m_pReader == nullptr)
return NO_UID;
char ID[6];
if (!Read(0, sizeof(ID), reinterpret_cast<u8*>(ID)))
{
PanicAlertT("Failed to read unique ID from disc image");
return NO_UID;
}
return DecodeString(ID);
}
IVolume::ECountry CVolumeGC::GetCountry() const
{
if (!m_pReader)
return COUNTRY_UNKNOWN;
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u8 country_code;
m_pReader->Read(3, 1, &country_code);
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return CountrySwitch(country_code);
}
std::string CVolumeGC::GetMakerID() const
{
if (m_pReader == nullptr)
return std::string();
char makerID[2];
if (!Read(0x4, 0x2, (u8*)&makerID))
return std::string();
return DecodeString(makerID);
}
u16 CVolumeGC::GetRevision() const
{
if (!m_pReader)
return 0;
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u8 revision;
if (!Read(7, 1, &revision))
return 0;
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return revision;
}
std::string CVolumeGC::GetInternalName() const
{
char name[0x60];
if (m_pReader != nullptr && Read(0x20, 0x60, (u8*)name))
return DecodeString(name);
else
return "";
}
std::map<IVolume::ELanguage, std::string> CVolumeGC::GetNames(bool prefer_long) const
{
return ReadMultiLanguageStrings(false, prefer_long);
}
std::map<IVolume::ELanguage, std::string> CVolumeGC::GetDescriptions() const
{
return ReadMultiLanguageStrings(true);
}
std::string CVolumeGC::GetCompany() const
{
if (!LoadBannerFile())
return "";
auto const pBanner = (GCBanner*)m_banner_file.data();
std::string company = DecodeString(pBanner->comment[0].longMaker);
if (company.empty())
company = DecodeString(pBanner->comment[0].shortMaker);
return company;
}
std::vector<u32> CVolumeGC::GetBanner(int* width, int* height) const
{
if (!LoadBannerFile())
{
*width = 0;
*height = 0;
return std::vector<u32>();
}
std::vector<u32> image_buffer(GC_BANNER_WIDTH * GC_BANNER_HEIGHT);
auto const pBanner = (GCBanner*)m_banner_file.data();
ColorUtil::decode5A3image(image_buffer.data(), pBanner->image, GC_BANNER_WIDTH, GC_BANNER_HEIGHT);
*width = GC_BANNER_WIDTH;
*height = GC_BANNER_HEIGHT;
return image_buffer;
}
u32 CVolumeGC::GetFSTSize() const
{
if (m_pReader == nullptr)
return 0;
u32 size;
if (!Read(0x428, 0x4, (u8*)&size))
return 0;
return Common::swap32(size);
}
std::string CVolumeGC::GetApploaderDate() const
{
if (m_pReader == nullptr)
return std::string();
char date[16];
if (!Read(0x2440, 0x10, (u8*)&date))
return std::string();
return DecodeString(date);
}
u64 CVolumeGC::GetSize() const
{
if (m_pReader)
return m_pReader->GetDataSize();
else
return 0;
}
u64 CVolumeGC::GetRawSize() const
{
if (m_pReader)
return m_pReader->GetRawSize();
else
return 0;
}
u8 CVolumeGC::GetDiscNumber() const
{
u8 disc_number;
Read(6, 1, &disc_number);
return disc_number;
}
IVolume::EPlatform CVolumeGC::GetVolumeType() const
{
return GAMECUBE_DISC;
}
// Returns true if the loaded banner file is valid,
// regardless of whether it was loaded by the current call
bool CVolumeGC::LoadBannerFile() const
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{
// The methods ReadMultiLanguageStrings, GetCompany and GetBanner
// need to access the opening.bnr file. These methods are
// usually called one after another. The file is cached in
// RAM to avoid reading it from the disc several times, but
// if none of these methods are called, the file is never loaded.
// If opening.bnr has been loaded already, return immediately
if (m_banner_file_type != BANNER_NOT_LOADED)
return m_banner_file_type != BANNER_INVALID;
std::unique_ptr<IFileSystem> file_system(CreateFileSystem(this));
size_t file_size = (size_t)file_system->GetFileSize("opening.bnr");
if (file_size == BNR1_SIZE || file_size == BNR2_SIZE)
{
m_banner_file.resize(file_size);
file_system->ReadFile("opening.bnr", m_banner_file.data(), m_banner_file.size());
u32 bannerSignature = *(u32*)m_banner_file.data();
if (file_size == BNR1_SIZE && bannerSignature == 0x31524e42) // "BNR1"
{
m_banner_file_type = BANNER_BNR1;
}
else if (file_size == BNR2_SIZE && bannerSignature == 0x32524e42) // "BNR2"
{
m_banner_file_type = BANNER_BNR2;
}
else
{
m_banner_file_type = BANNER_INVALID;
WARN_LOG(DISCIO, "Invalid opening.bnr. Type: %0x Size: %0lx", bannerSignature, (unsigned long)file_size);
}
}
else
{
m_banner_file_type = BANNER_INVALID;
WARN_LOG(DISCIO, "Invalid opening.bnr. Size: %0lx", (unsigned long)file_size);
}
return m_banner_file_type != BANNER_INVALID;
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}
std::map<IVolume::ELanguage, std::string> CVolumeGC::ReadMultiLanguageStrings(bool description, bool prefer_long) const
{
std::map<ELanguage, std::string> strings;
if (!LoadBannerFile())
return strings;
u32 number_of_languages = 0;
ELanguage start_language;
bool is_japanese = GetCountry() == ECountry::COUNTRY_JAPAN;
switch (m_banner_file_type)
{
case BANNER_BNR1: // NTSC
number_of_languages = 1;
start_language = is_japanese ? ELanguage::LANGUAGE_JAPANESE : ELanguage::LANGUAGE_ENGLISH;
break;
case BANNER_BNR2: // PAL
number_of_languages = 6;
start_language = ELanguage::LANGUAGE_ENGLISH;
break;
// Shouldn't happen
case BANNER_INVALID:
case BANNER_NOT_LOADED:
break;
}
auto const banner = reinterpret_cast<const GCBanner*>(m_banner_file.data());
for (u32 i = 0; i < number_of_languages; ++i)
{
GCBannerComment comment = banner->comment[i];
std::string string;
if (description)
{
string = DecodeString(comment.comment);
}
else // Title
{
if (prefer_long)
string = DecodeString(comment.longTitle);
if (string.empty())
string = DecodeString(comment.shortTitle);
}
if (!string.empty())
strings[(ELanguage)(start_language + i)] = string;
}
return strings;
}
} // namespace