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DiscIO: Add functions CreateDisc and CreateWAD

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...in addition to the existing function CreateVolume
(renamed from CreateVolumeFromFilename).

Lets code easily add constraints such as not letting the user
select a WAD file when using the disc changing functionality.
This commit is contained in:
JosJuice
2019-07-14 15:49:42 +02:00
parent a77b571da7
commit 0f5a4b37ee
15 changed files with 91 additions and 54 deletions
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53
Source/Core/DiscIO/Volume.cpp
View File

@ -43,23 +43,13 @@ std::map<Language, std::string> Volume::ReadWiiNames(const std::vector<char16_t>
return names;
}
std::unique_ptr<Volume> CreateVolumeFromFilename(const std::string& filename)
static std::unique_ptr<VolumeDisc> CreateDisc(std::unique_ptr<BlobReader>& reader)
{
std::unique_ptr<BlobReader> reader(CreateBlobReader(filename));
if (reader == nullptr)
return nullptr;
// Check for Wii
const std::optional<u32> wii_magic = reader->ReadSwapped<u32>(0x18);
if (wii_magic == u32(0x5D1C9EA3))
return std::make_unique<VolumeWii>(std::move(reader));
// Check for WAD
// 0x206962 for boot2 wads
const std::optional<u32> wad_magic = reader->ReadSwapped<u32>(0x02);
if (wad_magic == u32(0x00204973) || wad_magic == u32(0x00206962))
return std::make_unique<VolumeWAD>(std::move(reader));
// Check for GC
const std::optional<u32> gc_magic = reader->ReadSwapped<u32>(0x1C);
if (gc_magic == u32(0xC2339F3D))
@ -69,4 +59,45 @@ std::unique_ptr<Volume> CreateVolumeFromFilename(const std::string& filename)
return nullptr;
}
std::unique_ptr<VolumeDisc> CreateDisc(const std::string& path)
{
std::unique_ptr<BlobReader> reader(CreateBlobReader(path));
return reader ? CreateDisc(reader) : nullptr;
}
static std::unique_ptr<VolumeWAD> CreateWAD(std::unique_ptr<BlobReader>& reader)
{
// Check for WAD
// 0x206962 for boot2 wads
const std::optional<u32> wad_magic = reader->ReadSwapped<u32>(0x02);
if (wad_magic == u32(0x00204973) || wad_magic == u32(0x00206962))
return std::make_unique<VolumeWAD>(std::move(reader));
// No known magic words found
return nullptr;
}
std::unique_ptr<VolumeWAD> CreateWAD(const std::string& path)
{
std::unique_ptr<BlobReader> reader(CreateBlobReader(path));
return reader ? CreateWAD(reader) : nullptr;
}
std::unique_ptr<Volume> CreateVolume(const std::string& path)
{
std::unique_ptr<BlobReader> reader(CreateBlobReader(path));
if (reader == nullptr)
return nullptr;
std::unique_ptr<VolumeDisc> disc = CreateDisc(reader);
if (disc)
return disc;
std::unique_ptr<VolumeWAD> wad = CreateWAD(reader);
if (wad)
return wad;
return nullptr;
}
} // namespace DiscIO