diff options
Diffstat (limited to '')
-rw-r--r-- | src/common/CMakeLists.txt | 4 | ||||
-rw-r--r-- | src/common/assert.h | 18 | ||||
-rw-r--r-- | src/common/zstd_compression.cpp | 53 | ||||
-rw-r--r-- | src/common/zstd_compression.h | 42 |
4 files changed, 116 insertions, 1 deletions
diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt index 5639021d3..1e8e1b215 100644 --- a/src/common/CMakeLists.txt +++ b/src/common/CMakeLists.txt @@ -125,6 +125,8 @@ add_library(common STATIC uint128.h vector_math.h web_result.h + zstd_compression.cpp + zstd_compression.h ) if(ARCHITECTURE_x86_64) @@ -138,4 +140,4 @@ endif() create_target_directory_groups(common) target_link_libraries(common PUBLIC Boost::boost fmt microprofile) -target_link_libraries(common PRIVATE lz4_static) +target_link_libraries(common PRIVATE lz4_static libzstd_static) diff --git a/src/common/assert.h b/src/common/assert.h index 6002f7ab1..4b0e3f64e 100644 --- a/src/common/assert.h +++ b/src/common/assert.h @@ -57,3 +57,21 @@ __declspec(noinline, noreturn) #define UNIMPLEMENTED_IF(cond) ASSERT_MSG(!(cond), "Unimplemented code!") #define UNIMPLEMENTED_IF_MSG(cond, ...) ASSERT_MSG(!(cond), __VA_ARGS__) + +// If the assert is ignored, execute _b_ +#define ASSERT_OR_EXECUTE(_a_, _b_) \ + do { \ + ASSERT(_a_); \ + if (!(_a_)) { \ + _b_ \ + } \ + } while (0) + +// If the assert is ignored, execute _b_ +#define ASSERT_OR_EXECUTE_MSG(_a_, _b_, ...) \ + do { \ + ASSERT_MSG(_a_, __VA_ARGS__); \ + if (!(_a_)) { \ + _b_ \ + } \ + } while (0) diff --git a/src/common/zstd_compression.cpp b/src/common/zstd_compression.cpp new file mode 100644 index 000000000..60a35c67c --- /dev/null +++ b/src/common/zstd_compression.cpp @@ -0,0 +1,53 @@ +// Copyright 2019 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include <algorithm> +#include <zstd.h> + +#include "common/assert.h" +#include "common/zstd_compression.h" + +namespace Common::Compression { + +std::vector<u8> CompressDataZSTD(const u8* source, std::size_t source_size, s32 compression_level) { + compression_level = std::clamp(compression_level, 1, ZSTD_maxCLevel()); + + const std::size_t max_compressed_size = ZSTD_compressBound(source_size); + std::vector<u8> compressed(max_compressed_size); + + const std::size_t compressed_size = + ZSTD_compress(compressed.data(), compressed.size(), source, source_size, compression_level); + + if (ZSTD_isError(compressed_size)) { + // Compression failed + return {}; + } + + compressed.resize(compressed_size); + + return compressed; +} + +std::vector<u8> CompressDataZSTDDefault(const u8* source, std::size_t source_size) { + return CompressDataZSTD(source, source_size, ZSTD_CLEVEL_DEFAULT); +} + +std::vector<u8> DecompressDataZSTD(const std::vector<u8>& compressed) { + const std::size_t decompressed_size = + ZSTD_getDecompressedSize(compressed.data(), compressed.size()); + std::vector<u8> decompressed(decompressed_size); + + const std::size_t uncompressed_result_size = ZSTD_decompress( + decompressed.data(), decompressed.size(), compressed.data(), compressed.size()); + + if (decompressed_size != uncompressed_result_size || ZSTD_isError(uncompressed_result_size)) { + // Decompression failed + return {}; + } + return decompressed; +} + +} // namespace Common::Compression diff --git a/src/common/zstd_compression.h b/src/common/zstd_compression.h new file mode 100644 index 000000000..e0a64b035 --- /dev/null +++ b/src/common/zstd_compression.h @@ -0,0 +1,42 @@ +// Copyright 2019 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include <vector> + +#include "common/common_types.h" + +namespace Common::Compression { + +/** + * Compresses a source memory region with Zstandard and returns the compressed data in a vector. + * + * @param source the uncompressed source memory region. + * @param source_size the size in bytes of the uncompressed source memory region. + * @param compression_level the used compression level. Should be between 1 and 22. + * + * @return the compressed data. + */ +std::vector<u8> CompressDataZSTD(const u8* source, std::size_t source_size, s32 compression_level); + +/** + * Compresses a source memory region with Zstandard with the default compression level and returns + * the compressed data in a vector. + * + * @param source the uncompressed source memory region. + * @param source_size the size in bytes of the uncompressed source memory region. + * + * @return the compressed data. + */ +std::vector<u8> CompressDataZSTDDefault(const u8* source, std::size_t source_size); + +/** + * Decompresses a source memory region with Zstandard and returns the uncompressed data in a vector. + * + * @param compressed the compressed source memory region. + * + * @return the decompressed data. + */ +std::vector<u8> DecompressDataZSTD(const std::vector<u8>& compressed); + +} // namespace Common::Compression
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