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zstd_compression: Make use of std::span in interfaces
Allows condensing the data and size parameters into a single argument.
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@ -5,19 +5,18 @@
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#include <algorithm>
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#include <zstd.h>
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#include "common/assert.h"
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#include "common/zstd_compression.h"
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namespace Common::Compression {
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std::vector<u8> CompressDataZSTD(const u8* source, std::size_t source_size, s32 compression_level) {
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std::vector<u8> CompressDataZSTD(std::span<const u8> source, s32 compression_level) {
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compression_level = std::clamp(compression_level, 1, ZSTD_maxCLevel());
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const std::size_t max_compressed_size = ZSTD_compressBound(source_size);
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const std::size_t max_compressed_size = ZSTD_compressBound(source.size());
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std::vector<u8> compressed(max_compressed_size);
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const std::size_t compressed_size =
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ZSTD_compress(compressed.data(), compressed.size(), source, source_size, compression_level);
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const std::size_t compressed_size = ZSTD_compress(
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compressed.data(), compressed.size(), source.data(), source.size(), compression_level);
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if (ZSTD_isError(compressed_size)) {
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// Compression failed
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@ -29,8 +28,8 @@ std::vector<u8> CompressDataZSTD(const u8* source, std::size_t source_size, s32
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return compressed;
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}
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std::vector<u8> CompressDataZSTDDefault(const u8* source, std::size_t source_size) {
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return CompressDataZSTD(source, source_size, ZSTD_CLEVEL_DEFAULT);
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std::vector<u8> CompressDataZSTDDefault(std::span<const u8> source) {
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return CompressDataZSTD(source, ZSTD_CLEVEL_DEFAULT);
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}
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std::vector<u8> DecompressDataZSTD(const std::vector<u8>& compressed) {
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@ -4,6 +4,7 @@
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#pragma once
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#include <span>
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#include <vector>
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#include "common/common_types.h"
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@ -14,23 +15,21 @@ namespace Common::Compression {
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* Compresses a source memory region with Zstandard and returns the compressed data in a vector.
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*
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* @param source the uncompressed source memory region.
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* @param source_size the size in bytes of the uncompressed source memory region.
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* @param compression_level the used compression level. Should be between 1 and 22.
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*
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* @return the compressed data.
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*/
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std::vector<u8> CompressDataZSTD(const u8* source, std::size_t source_size, s32 compression_level);
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std::vector<u8> CompressDataZSTD(std::span<const u8> source, s32 compression_level);
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/**
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* Compresses a source memory region with Zstandard with the default compression level and returns
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* the compressed data in a vector.
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*
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* @param source the uncompressed source memory region.
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* @param source_size the size in bytes of the uncompressed source memory region.
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*
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* @return the compressed data.
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*/
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std::vector<u8> CompressDataZSTDDefault(const u8* source, std::size_t source_size);
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std::vector<u8> CompressDataZSTDDefault(std::span<const u8> source);
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/**
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* Decompresses a source memory region with Zstandard and returns the uncompressed data in a vector.
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@ -422,8 +422,7 @@ void ShaderDiskCacheOpenGL::SavePrecompiledHeaderToVirtualPrecompiledCache() {
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void ShaderDiskCacheOpenGL::SaveVirtualPrecompiledFile() {
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precompiled_cache_virtual_file_offset = 0;
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const std::vector<u8> uncompressed = precompiled_cache_virtual_file.ReadAllBytes();
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const std::vector<u8> compressed =
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Common::Compression::CompressDataZSTDDefault(uncompressed.data(), uncompressed.size());
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const std::vector<u8> compressed = Common::Compression::CompressDataZSTDDefault(uncompressed);
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const auto precompiled_path{GetPrecompiledPath()};
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FileUtil::IOFile file(precompiled_path, "wb");
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