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https://github.com/dolphin-emu/dolphin.git
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401 lines
14 KiB
C++
401 lines
14 KiB
C++
// Copyright 2018 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <array>
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#include <limits>
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#include <map>
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#include <memory>
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#include <mutex>
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#include <type_traits>
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#include <utility>
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#include "Common/CommonTypes.h"
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#include "Common/Crypto/SHA1.h"
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#include "Common/IOFile.h"
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#include "Common/Swap.h"
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#include "DiscIO/Blob.h"
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#include "DiscIO/MultithreadedCompressor.h"
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#include "DiscIO/WIACompression.h"
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#include "DiscIO/WiiEncryptionCache.h"
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namespace DiscIO
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{
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class FileSystem;
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class VolumeDisc;
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enum class WIARVZCompressionType : u32
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{
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None = 0,
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Purge = 1,
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Bzip2 = 2,
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LZMA = 3,
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LZMA2 = 4,
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Zstd = 5,
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};
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std::pair<int, int> GetAllowedCompressionLevels(WIARVZCompressionType compression_type, bool gui);
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constexpr u32 WIA_MAGIC = 0x01414957; // "WIA\x1" (byteswapped to little endian)
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constexpr u32 RVZ_MAGIC = 0x015A5652; // "RVZ\x1" (byteswapped to little endian)
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template <bool RVZ>
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class WIARVZFileReader : public BlobReader
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{
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public:
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~WIARVZFileReader();
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static std::unique_ptr<WIARVZFileReader> Create(File::IOFile file, const std::string& path);
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BlobType GetBlobType() const override;
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u64 GetRawSize() const override { return Common::swap64(m_header_1.wia_file_size); }
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u64 GetDataSize() const override { return Common::swap64(m_header_1.iso_file_size); }
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bool IsDataSizeAccurate() const override { return true; }
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u64 GetBlockSize() const override { return Common::swap32(m_header_2.chunk_size); }
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bool HasFastRandomAccessInBlock() const override { return false; }
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std::string GetCompressionMethod() const override;
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std::optional<int> GetCompressionLevel() const override
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{
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return static_cast<int>(static_cast<s32>(Common::swap32(m_header_2.compression_level)));
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}
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bool Read(u64 offset, u64 size, u8* out_ptr) override;
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bool SupportsReadWiiDecrypted(u64 offset, u64 size, u64 partition_data_offset) const override;
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bool ReadWiiDecrypted(u64 offset, u64 size, u8* out_ptr, u64 partition_data_offset) override;
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static ConversionResultCode Convert(BlobReader* infile, const VolumeDisc* infile_volume,
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File::IOFile* outfile, WIARVZCompressionType compression_type,
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int compression_level, int chunk_size, CompressCB callback);
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private:
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using WiiKey = std::array<u8, 16>;
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// See docs/WiaAndRvz.md for details about the format
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#pragma pack(push, 1)
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struct WIAHeader1
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{
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u32 magic;
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u32 version;
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u32 version_compatible;
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u32 header_2_size;
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Common::SHA1::Digest header_2_hash;
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u64 iso_file_size;
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u64 wia_file_size;
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Common::SHA1::Digest header_1_hash;
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};
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static_assert(sizeof(WIAHeader1) == 0x48, "Wrong size for WIA header 1");
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struct WIAHeader2
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{
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u32 disc_type;
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u32 compression_type;
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s32 compression_level; // Informative only
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u32 chunk_size;
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std::array<u8, 0x80> disc_header;
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u32 number_of_partition_entries;
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u32 partition_entry_size;
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u64 partition_entries_offset;
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Common::SHA1::Digest partition_entries_hash;
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u32 number_of_raw_data_entries;
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u64 raw_data_entries_offset;
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u32 raw_data_entries_size;
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u32 number_of_group_entries;
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u64 group_entries_offset;
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u32 group_entries_size;
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u8 compressor_data_size;
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u8 compressor_data[7];
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};
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static_assert(sizeof(WIAHeader2) == 0xdc, "Wrong size for WIA header 2");
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struct PartitionDataEntry
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{
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u32 first_sector;
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u32 number_of_sectors;
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u32 group_index;
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u32 number_of_groups;
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};
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static_assert(sizeof(PartitionDataEntry) == 0x10, "Wrong size for WIA partition data entry");
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struct PartitionEntry
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{
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WiiKey partition_key;
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std::array<PartitionDataEntry, 2> data_entries;
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};
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static_assert(sizeof(PartitionEntry) == 0x30, "Wrong size for WIA partition entry");
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struct RawDataEntry
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{
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u64 data_offset;
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u64 data_size;
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u32 group_index;
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u32 number_of_groups;
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};
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static_assert(sizeof(RawDataEntry) == 0x18, "Wrong size for WIA raw data entry");
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struct WIAGroupEntry
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{
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u32 data_offset; // >> 2
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u32 data_size;
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};
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static_assert(sizeof(WIAGroupEntry) == 0x08, "Wrong size for WIA group entry");
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struct RVZGroupEntry
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{
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u32 data_offset; // >> 2
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u32 data_size;
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u32 rvz_packed_size;
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};
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static_assert(sizeof(RVZGroupEntry) == 0x0c, "Wrong size for RVZ group entry");
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using GroupEntry = std::conditional_t<RVZ, RVZGroupEntry, WIAGroupEntry>;
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struct HashExceptionEntry
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{
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u16 offset;
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Common::SHA1::Digest hash;
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};
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static_assert(sizeof(HashExceptionEntry) == 0x16, "Wrong size for WIA hash exception entry");
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#pragma pack(pop)
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struct DataEntry
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{
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u32 index;
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bool is_partition;
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u8 partition_data_index;
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DataEntry(size_t index_)
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: index(static_cast<u32>(index_)), is_partition(false), partition_data_index(0)
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{
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}
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DataEntry(size_t index_, size_t partition_data_index_)
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: index(static_cast<u32>(index_)), is_partition(true),
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partition_data_index(static_cast<u8>(partition_data_index_))
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{
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}
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};
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class Chunk
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{
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public:
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Chunk();
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Chunk(File::IOFile* file, u64 offset_in_file, u64 compressed_size, u64 decompressed_size,
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u32 exception_lists, bool compressed_exception_lists, u32 rvz_packed_size,
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u64 data_offset, std::unique_ptr<Decompressor> decompressor);
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bool Read(u64 offset, u64 size, u8* out_ptr);
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// This can only be called once at least one byte of data has been read
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void GetHashExceptions(std::vector<HashExceptionEntry>* exception_list,
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u64 exception_list_index, u16 additional_offset) const;
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template <typename T>
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bool ReadAll(std::vector<T>* vector)
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{
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return Read(0, vector->size() * sizeof(T), reinterpret_cast<u8*>(vector->data()));
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}
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private:
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bool Decompress();
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bool HandleExceptions(const u8* data, size_t bytes_allocated, size_t bytes_written,
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size_t* bytes_used, bool align);
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size_t GetOutBytesWrittenExcludingExceptions() const;
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DecompressionBuffer m_in;
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DecompressionBuffer m_out;
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size_t m_in_bytes_read = 0;
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std::unique_ptr<Decompressor> m_decompressor = nullptr;
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File::IOFile* m_file = nullptr;
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u64 m_offset_in_file = 0;
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size_t m_out_bytes_allocated_for_exceptions = 0;
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size_t m_out_bytes_used_for_exceptions = 0;
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size_t m_in_bytes_used_for_exceptions = 0;
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u32 m_exception_lists = 0;
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bool m_compressed_exception_lists = false;
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u32 m_rvz_packed_size = 0;
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u64 m_data_offset = 0;
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};
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explicit WIARVZFileReader(File::IOFile file, const std::string& path);
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bool Initialize(const std::string& path);
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bool HasDataOverlap() const;
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const PartitionEntry* GetPartition(u64 partition_data_offset, u32* partition_first_sector) const;
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bool ReadFromGroups(u64* offset, u64* size, u8** out_ptr, u64 chunk_size, u32 sector_size,
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u64 data_offset, u64 data_size, u32 group_index, u32 number_of_groups,
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u32 exception_lists);
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Chunk& ReadCompressedData(u64 offset_in_file, u64 compressed_size, u64 decompressed_size,
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WIARVZCompressionType compression_type, u32 exception_lists = 0,
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u32 rvz_packed_size = 0, u64 data_offset = 0);
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static bool ApplyHashExceptions(const std::vector<HashExceptionEntry>& exception_list,
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VolumeWii::HashBlock hash_blocks[VolumeWii::BLOCKS_PER_GROUP]);
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static std::string VersionToString(u32 version);
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struct ReuseID
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{
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bool operator==(const ReuseID& other) const
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{
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return std::tie(partition_key, data_size, encrypted, value) ==
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std::tie(other.partition_key, other.data_size, other.encrypted, other.value);
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}
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bool operator<(const ReuseID& other) const
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{
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return std::tie(partition_key, data_size, encrypted, value) <
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std::tie(other.partition_key, other.data_size, other.encrypted, other.value);
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}
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bool operator>(const ReuseID& other) const
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{
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return std::tie(partition_key, data_size, encrypted, value) >
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std::tie(other.partition_key, other.data_size, other.encrypted, other.value);
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}
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bool operator!=(const ReuseID& other) const { return !operator==(other); }
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bool operator>=(const ReuseID& other) const { return !operator<(other); }
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bool operator<=(const ReuseID& other) const { return !operator>(other); }
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WiiKey partition_key;
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u64 data_size;
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bool encrypted;
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u8 value;
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};
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struct CompressThreadState
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{
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using WiiBlockData = std::array<u8, VolumeWii::BLOCK_DATA_SIZE>;
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std::unique_ptr<Compressor> compressor;
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std::vector<WiiBlockData> decryption_buffer =
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std::vector<WiiBlockData>(VolumeWii::BLOCKS_PER_GROUP);
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std::vector<VolumeWii::HashBlock> hash_buffer =
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std::vector<VolumeWii::HashBlock>(VolumeWii::BLOCKS_PER_GROUP);
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};
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struct CompressParameters
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{
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std::vector<u8> data{};
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const DataEntry* data_entry = nullptr;
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u64 data_offset = 0;
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u64 bytes_read = 0;
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size_t group_index = 0;
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};
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struct WIAOutputParametersEntry
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{
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std::vector<u8> exception_lists;
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std::vector<u8> main_data;
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std::optional<ReuseID> reuse_id;
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std::optional<GroupEntry> reused_group;
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};
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struct RVZOutputParametersEntry
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{
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std::vector<u8> exception_lists;
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std::vector<u8> main_data;
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std::optional<ReuseID> reuse_id;
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std::optional<GroupEntry> reused_group;
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size_t rvz_packed_size = 0;
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bool compressed = false;
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};
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using OutputParametersEntry =
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std::conditional_t<RVZ, RVZOutputParametersEntry, WIAOutputParametersEntry>;
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struct OutputParameters
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{
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std::vector<OutputParametersEntry> entries;
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u64 bytes_read = 0;
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size_t group_index = 0;
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};
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static bool PadTo4(File::IOFile* file, u64* bytes_written);
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static void AddRawDataEntry(u64 offset, u64 size, int chunk_size, u32* total_groups,
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std::vector<RawDataEntry>* raw_data_entries,
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std::vector<DataEntry>* data_entries);
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static PartitionDataEntry
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CreatePartitionDataEntry(u64 offset, u64 size, u32 index, int chunk_size, u32* total_groups,
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const std::vector<PartitionEntry>& partition_entries,
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std::vector<DataEntry>* data_entries);
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static ConversionResultCode SetUpDataEntriesForWriting(
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const VolumeDisc* volume, int chunk_size, u64 iso_size, u32* total_groups,
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std::vector<PartitionEntry>* partition_entries, std::vector<RawDataEntry>* raw_data_entries,
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std::vector<DataEntry>* data_entries, std::vector<const FileSystem*>* partition_file_systems);
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static std::optional<std::vector<u8>> Compress(Compressor* compressor, const u8* data,
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size_t size);
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static bool WriteHeader(File::IOFile* file, const u8* data, size_t size, u64 upper_bound,
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u64* bytes_written, u64* offset_out);
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static void SetUpCompressor(std::unique_ptr<Compressor>* compressor,
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WIARVZCompressionType compression_type, int compression_level,
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WIAHeader2* header_2);
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static bool TryReuse(std::map<ReuseID, GroupEntry>* reusable_groups,
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std::mutex* reusable_groups_mutex, OutputParametersEntry* entry);
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static ConversionResult<OutputParameters>
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ProcessAndCompress(CompressThreadState* state, CompressParameters parameters,
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const std::vector<PartitionEntry>& partition_entries,
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const std::vector<DataEntry>& data_entries, const FileSystem* file_system,
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std::map<ReuseID, GroupEntry>* reusable_groups,
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std::mutex* reusable_groups_mutex, u64 chunks_per_wii_group,
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u64 exception_lists_per_chunk, bool compressed_exception_lists,
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bool compression);
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static ConversionResultCode Output(std::vector<OutputParametersEntry>* entries,
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File::IOFile* outfile,
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std::map<ReuseID, GroupEntry>* reusable_groups,
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std::mutex* reusable_groups_mutex, GroupEntry* group_entry,
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u64* bytes_written);
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static ConversionResultCode RunCallback(size_t groups_written, u64 bytes_read, u64 bytes_written,
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u32 total_groups, u64 iso_size, CompressCB callback);
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bool m_valid;
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WIARVZCompressionType m_compression_type;
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File::IOFile m_file;
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Chunk m_cached_chunk;
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u64 m_cached_chunk_offset = std::numeric_limits<u64>::max();
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WiiEncryptionCache m_encryption_cache;
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std::vector<HashExceptionEntry> m_exception_list;
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bool m_write_to_exception_list = false;
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u64 m_exception_list_last_group_index;
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WIAHeader1 m_header_1;
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WIAHeader2 m_header_2;
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std::vector<PartitionEntry> m_partition_entries;
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std::vector<RawDataEntry> m_raw_data_entries;
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std::vector<GroupEntry> m_group_entries;
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std::map<u64, DataEntry> m_data_entries;
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// Perhaps we could set WIA_VERSION_WRITE_COMPATIBLE to 0.9, but WIA version 0.9 was never in
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// any official release of wit, and interim versions (either source or binaries) are hard to find.
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// Since we've been unable to check if we're write compatible with 0.9, we set it 1.0 to be safe.
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static constexpr u32 WIA_VERSION = 0x01000000;
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static constexpr u32 WIA_VERSION_WRITE_COMPATIBLE = 0x01000000;
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static constexpr u32 WIA_VERSION_READ_COMPATIBLE = 0x00080000;
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static constexpr u32 RVZ_VERSION = 0x01000000;
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static constexpr u32 RVZ_VERSION_WRITE_COMPATIBLE = 0x00030000;
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static constexpr u32 RVZ_VERSION_READ_COMPATIBLE = 0x00030000;
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};
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using WIAFileReader = WIARVZFileReader<false>;
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using RVZFileReader = WIARVZFileReader<true>;
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} // namespace DiscIO
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