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DiscIO: merge initial WBFS reads

This commit is contained in:
Tillmann Karras 2015-09-18 00:00:14 +02:00
parent f416106eec
commit 3a2efc9f4f
2 changed files with 18 additions and 23 deletions
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25
Source/Core/DiscIO/WbfsBlob.cpp
View File

@ -83,21 +83,17 @@ bool WbfsFileReader::OpenFiles(const std::string& filename)
bool WbfsFileReader::ReadHeader()
{
m_files[0]->file.Seek(4, SEEK_SET);
// Read hd size info
m_files[0]->file.ReadBytes(&m_hd_sector_count, 4);
m_hd_sector_count = Common::swap32(m_hd_sector_count);
m_files[0]->file.ReadBytes(&m_header, sizeof(WbfsHeader));
m_header.hd_sector_count = Common::swap32(m_header.hd_sector_count);
m_files[0]->file.ReadBytes(&m_hd_sector_shift, 1);
m_hd_sector_size = 1ull << m_hd_sector_shift;
m_hd_sector_size = 1ull << m_header.hd_sector_shift;
if (m_size != (m_hd_sector_count * m_hd_sector_size))
if (m_size != (m_header.hd_sector_count * m_hd_sector_size))
return false;
// Read wbfs cluster info
m_files[0]->file.ReadBytes(&m_wbfs_sector_shift, 1);
m_wbfs_sector_size = 1ull << m_wbfs_sector_shift;
m_wbfs_sector_size = 1ull << m_header.wbfs_sector_shift;
m_wbfs_sector_count = m_size / m_wbfs_sector_size;
if (m_wbfs_sector_size < WII_SECTOR_SIZE)
@ -106,14 +102,7 @@ bool WbfsFileReader::ReadHeader()
m_blocks_per_disc = (WII_SECTOR_COUNT * WII_SECTOR_SIZE) / m_wbfs_sector_size;
m_disc_info_size = align(WII_DISC_HEADER_SIZE + m_blocks_per_disc * sizeof(u16), m_hd_sector_size);
// Read disc table
m_files[0]->file.Seek(2, SEEK_CUR);
m_files[0]->file.ReadBytes(m_disc_table, 500);
if (m_disc_table[0] == 0)
return false;
return true;
return m_header.disc_table[0] != 0;
}
bool WbfsFileReader::Read(u64 offset, u64 nbytes, u8* out_ptr)
@ -142,7 +131,7 @@ bool WbfsFileReader::Read(u64 offset, u64 nbytes, u8* out_ptr)
File::IOFile& WbfsFileReader::SeekToCluster(u64 offset, u64* available)
{
u64 base_cluster = (offset >> m_wbfs_sector_shift);
u64 base_cluster = (offset >> m_header.wbfs_sector_shift);
if (base_cluster < m_blocks_per_disc)
{
u64 cluster_address = m_wbfs_sector_size * m_wlba_table[base_cluster];

16
Source/Core/DiscIO/WbfsBlob.h
View File

@ -48,15 +48,21 @@ private:
u64 m_size;
u64 m_hd_sector_size;
u8 m_hd_sector_shift;
u32 m_hd_sector_count;
u64 m_wbfs_sector_size;
u8 m_wbfs_sector_shift;
u64 m_wbfs_sector_count;
u64 m_disc_info_size;
u8 m_disc_table[500];
#pragma pack(1)
struct WbfsHeader
{
char magic[4];
u32 hd_sector_count;
u8 hd_sector_shift;
u8 wbfs_sector_shift;
u8 padding[2];
u8 disc_table[500];
} m_header;
#pragma pack()
u16* m_wlba_table;
u64 m_blocks_per_disc;