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Add CompressionV3 and tests

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This commit is contained in:
scawful
2023-10-17 17:08:15 -04:00
parent eb474c19e3
commit 5b686318cd
3 changed files with 992 additions and 345 deletions
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138
src/app/gfx/compression.h
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@@ -68,47 +68,6 @@ void PrintCompressionPiece(const CompressionPiecePointer& piece);
void PrintCompressionChain(const CompressionPiecePointer& chain_head);
// Compression V2
void CheckByteRepeatV2(const uchar* data, uint& src_pos, const uint last_pos,
CompressionCommand& cmd);
void CheckWordRepeatV2(const uchar* data, uint& src_pos, const uint last_pos,
CompressionCommand& cmd);
void CheckIncByteV2(const uchar* data, uint& src_pos, const uint last_pos,
CompressionCommand& cmd);
void CheckIntraCopyV2(const uchar* data, uint& src_pos, const uint last_pos,
uint start, CompressionCommand& cmd);
void ValidateForByteGainV2(const CompressionCommand& cmd, uint& max_win,
uint& cmd_with_max);
void CompressionCommandAlternativeV2(const uchar* data,
const CompressionCommand& cmd,
CompressionPiecePointer& compressed_chain,
uint& src_pos, uint& comp_accumulator,
uint& cmd_with_max, uint& max_win);
absl::StatusOr<Bytes> CompressV2(const uchar* data, const int start,
const int length, int mode = 1,
bool check = false);
absl::StatusOr<Bytes> CompressGraphics(const uchar* data, const int pos,
const int length);
absl::StatusOr<Bytes> CompressOverworld(const uchar* data, const int pos,
const int length);
std::string SetBuffer(const uchar* data, int src_pos, int comp_accumulator);
void memfill(const uchar* data, Bytes& buffer, int buffer_pos, int offset,
int length);
absl::StatusOr<Bytes> DecompressV2(const uchar* data, int offset,
int size = 0x800, int mode = 1);
absl::StatusOr<Bytes> DecompressGraphics(const uchar* data, int pos, int size);
absl::StatusOr<Bytes> DecompressOverworld(const uchar* data, int pos, int size);
absl::StatusOr<Bytes> DecompressOverworld(const std::vector<uint8_t> data, int pos, int size);
// Compression V1
void CheckByteRepeat(const uchar* rom_data, DataSizeArray& data_size_taken,
@@ -138,6 +97,38 @@ void CompressionCommandAlternative(const uchar* rom_data,
uint& src_data_pos, uint& comp_accumulator,
uint& cmd_with_max, uint& max_win);
// Compression V2
void CheckByteRepeatV2(const uchar* data, uint& src_pos, const uint last_pos,
CompressionCommand& cmd);
void CheckWordRepeatV2(const uchar* data, uint& src_pos, const uint last_pos,
CompressionCommand& cmd);
void CheckIncByteV2(const uchar* data, uint& src_pos, const uint last_pos,
CompressionCommand& cmd);
void CheckIntraCopyV2(const uchar* data, uint& src_pos, const uint last_pos,
uint start, CompressionCommand& cmd);
void ValidateForByteGainV2(const CompressionCommand& cmd, uint& max_win,
uint& cmd_with_max);
void CompressionCommandAlternativeV2(const uchar* data,
const CompressionCommand& cmd,
CompressionPiecePointer& compressed_chain,
uint& src_pos, uint& comp_accumulator,
uint& cmd_with_max, uint& max_win);
absl::StatusOr<Bytes> CompressV2(const uchar* data, const int start,
const int length, int mode = 1,
bool check = false);
absl::StatusOr<Bytes> CompressGraphics(const uchar* data, const int pos,
const int length);
absl::StatusOr<Bytes> CompressOverworld(const uchar* data, const int pos,
const int length);
absl::StatusOr<CompressionPiecePointer> SplitCompressionPiece(
CompressionPiecePointer& piece, int mode);
@@ -148,6 +139,71 @@ absl::Status ValidateCompressionResult(CompressionPiecePointer& chain_head,
CompressionPiecePointer MergeCopy(CompressionPiecePointer& start);
// Compression V3
struct CompressionContext {
std::vector<uint8_t> data;
std::vector<uint8_t> compressed_data;
std::vector<CompressionPiece> compression_pieces;
std::vector<uint8_t> compression_string;
uint src_pos;
uint last_pos;
uint start;
uint comp_accumulator = 0;
uint cmd_with_max = kCommandDirectCopy;
uint max_win = 0;
CompressionCommand current_cmd = {};
int mode;
// Constructor to initialize the context
CompressionContext(const std::vector<uint8_t>& data_, const int start,
const int length)
: data(data_), src_pos(start), last_pos(start + length - 1), mode(0) {}
// Constructor to initialize the context
CompressionContext(const std::vector<uint8_t>& data_, const int start,
const int length, int mode_)
: data(data_),
src_pos(start),
last_pos(start + length - 1),
mode(mode_) {}
};
void CheckByteRepeatV3(CompressionContext& context);
void CheckWordRepeatV3(CompressionContext& context);
void CheckIncByteV3(CompressionContext& context);
void CheckIntraCopyV3(CompressionContext& context);
void InitializeCompression(CompressionContext& context);
void CheckAvailableCompressionCommands(CompressionContext& context);
void DetermineBestCompression(CompressionContext& context);
void HandleDirectCopy(CompressionContext& context);
void AddCompressionToChain(CompressionContext& context);
absl::Status ValidateCompressionResultV3(const CompressionContext& context);
absl::StatusOr<CompressionPiece> SplitCompressionPieceV3(
CompressionPiece& piece, int mode);
void FinalizeCompression(CompressionContext& context);
absl::StatusOr<Bytes> CompressV3(const std::vector<uint8_t> data,
const int start, const int length,
int mode = 1, bool check = false);
// Decompression
std::string SetBuffer(const std::vector<uint8_t>& data, int src_pos,
int comp_accumulator);
std::string SetBuffer(const uchar* data, int src_pos, int comp_accumulator);
void memfill(const uchar* data, Bytes& buffer, int buffer_pos, int offset,
int length);
absl::StatusOr<Bytes> DecompressV2(const uchar* data, int offset,
int size = 0x800, int mode = 1);
absl::StatusOr<Bytes> DecompressGraphics(const uchar* data, int pos, int size);
absl::StatusOr<Bytes> DecompressOverworld(const uchar* data, int pos, int size);
absl::StatusOr<Bytes> DecompressOverworld(const std::vector<uint8_t> data,
int pos, int size);
} // namespace lc_lz2
} // namespace gfx