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https://github.com/citra-mirror/citra.git
synced 2024-08-20 18:33:24 +02:00
Add simple zstd compression
Just a simple default compression is able to shrink savestate file size from ~160MB to ~20MB.
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parent
57efc41973
commit
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@ -13,6 +13,7 @@
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#include "common/archives.h"
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#include "common/archives.h"
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#include "common/logging/log.h"
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#include "common/logging/log.h"
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#include "common/texture.h"
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#include "common/texture.h"
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#include "common/zstd_compression.h"
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#include "core/arm/arm_interface.h"
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#include "core/arm/arm_interface.h"
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#ifdef ARCHITECTURE_x86_64
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#ifdef ARCHITECTURE_x86_64
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#include "core/arm/dynarmic/arm_dynarmic.h"
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#include "core/arm/dynarmic/arm_dynarmic.h"
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@ -116,7 +117,7 @@ System::ResultStatus System::RunLoop(bool tight_loop) {
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case Signal::Load: {
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case Signal::Load: {
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LOG_INFO(Core, "Begin load");
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LOG_INFO(Core, "Begin load");
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auto stream = std::ifstream("save0.citrasave", std::fstream::binary);
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auto stream = std::ifstream("save0.citrasave", std::fstream::binary);
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System::Load(stream);
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System::Load(stream, FileUtil::GetSize("save0.citrasave"));
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LOG_INFO(Core, "Load completed");
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LOG_INFO(Core, "Load completed");
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} break;
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} break;
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case Signal::Save: {
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case Signal::Save: {
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@ -464,27 +465,43 @@ void System::serialize(Archive& ar, const unsigned int file_version) {
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}
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}
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void System::Save(std::ostream& stream) const {
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void System::Save(std::ostream& stream) const {
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std::ostringstream sstream{std::ios_base::binary};
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try {
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try {
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{
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{
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oarchive oa{stream};
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oarchive oa{sstream};
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oa&* this;
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oa&* this;
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}
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}
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VideoCore::Save(stream);
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VideoCore::Save(sstream);
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} catch (const std::exception& e) {
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} catch (const std::exception& e) {
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LOG_ERROR(Core, "Error saving: {}", e.what());
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LOG_ERROR(Core, "Error saving: {}", e.what());
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}
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}
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const std::string& str{sstream.str()};
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auto buffer = Common::Compression::CompressDataZSTDDefault(
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reinterpret_cast<const u8*>(str.data()), str.size());
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stream.write(reinterpret_cast<const char*>(buffer.data()), buffer.size());
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}
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}
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void System::Load(std::istream& stream) {
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void System::Load(std::istream& stream, std::size_t size) {
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std::vector<u8> decompressed;
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{
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std::vector<u8> buffer(size);
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stream.read(reinterpret_cast<char*>(buffer.data()), size);
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decompressed = Common::Compression::DecompressDataZSTD(buffer);
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}
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std::istringstream sstream{
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std::string{reinterpret_cast<char*>(decompressed.data()), decompressed.size()},
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std::ios_base::binary};
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decompressed.clear();
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try {
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try {
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{
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{
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iarchive ia{stream};
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iarchive ia{sstream};
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ia&* this;
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ia&* this;
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}
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}
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VideoCore::Load(stream);
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VideoCore::Load(sstream);
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} catch (const std::exception& e) {
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} catch (const std::exception& e) {
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LOG_ERROR(Core, "Error loading: {}", e.what());
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LOG_ERROR(Core, "Error loading: {}", e.what());
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@ -278,7 +278,7 @@ public:
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void Save(std::ostream& stream) const;
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void Save(std::ostream& stream) const;
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void Load(std::istream& stream);
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void Load(std::istream& stream, std::size_t size);
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private:
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private:
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/**
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/**
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