mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2024-11-15 22:09:19 -07:00
60 lines
1.2 KiB
C++
60 lines
1.2 KiB
C++
// Copyright 2008 Dolphin Emulator Project
|
|
// Licensed under GPLv2+
|
|
// Refer to the license.txt file included.
|
|
|
|
#pragma once
|
|
|
|
#include <cstdio>
|
|
#include <memory>
|
|
#include <string>
|
|
|
|
#include "Common/CommonTypes.h"
|
|
#include "Common/FileUtil.h"
|
|
#include "DiscIO/Blob.h"
|
|
|
|
namespace DiscIO
|
|
{
|
|
bool IsCISOBlob(const std::string& filename);
|
|
|
|
static const u32 CISO_HEADER_SIZE = 0x8000;
|
|
static const u32 CISO_MAP_SIZE = CISO_HEADER_SIZE - sizeof(u32) - sizeof(char) * 4;
|
|
|
|
struct CISOHeader
|
|
{
|
|
// "CISO"
|
|
char magic[4];
|
|
|
|
// little endian
|
|
u32 block_size;
|
|
|
|
// 0=unused, 1=used, others=invalid
|
|
u8 map[CISO_MAP_SIZE];
|
|
};
|
|
|
|
class CISOFileReader : public IBlobReader
|
|
{
|
|
public:
|
|
static std::unique_ptr<CISOFileReader> Create(const std::string& filename);
|
|
|
|
BlobType GetBlobType() const override { return BlobType::CISO; }
|
|
// The CISO format does not save the original file size.
|
|
// This function returns an upper bound.
|
|
u64 GetDataSize() const override;
|
|
|
|
u64 GetRawSize() const override;
|
|
bool Read(u64 offset, u64 nbytes, u8* out_ptr) override;
|
|
|
|
private:
|
|
CISOFileReader(std::FILE* file);
|
|
|
|
typedef u16 MapType;
|
|
static const MapType UNUSED_BLOCK_ID = -1;
|
|
|
|
File::IOFile m_file;
|
|
u64 m_size;
|
|
u32 m_block_size;
|
|
MapType m_ciso_map[CISO_MAP_SIZE];
|
|
};
|
|
|
|
} // namespace
|