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rewrite compression and decompression to limit at 30 MB

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This commit is contained in:
Lion Kortlepel
2024-06-22 22:47:31 +02:00
parent a998a7c091
commit 105fd6d4c9
2 changed files with 53 additions and 52 deletions
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54
include/Common.h
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@@ -29,6 +29,7 @@
#include <memory>
#include <mutex>
#include <shared_mutex>
#include <span>
#include <sstream>
#include <unordered_map>
#include <zlib.h>
@@ -289,57 +290,8 @@ void RegisterThread(const std::string& str);
void LogChatMessage(const std::string& name, int id, const std::string& msg);
#define Biggest 30000
template <typename T>
inline T Comp(const T& Data) {
std::array<char, Biggest> C {};
// obsolete
C.fill(0);
z_stream defstream;
defstream.zalloc = nullptr;
defstream.zfree = nullptr;
defstream.opaque = nullptr;
defstream.avail_in = uInt(Data.size());
defstream.next_in = const_cast<Bytef*>(reinterpret_cast<const Bytef*>(&Data[0]));
defstream.avail_out = Biggest;
defstream.next_out = reinterpret_cast<Bytef*>(C.data());
deflateInit(&defstream, Z_BEST_COMPRESSION);
deflate(&defstream, Z_SYNC_FLUSH);
deflate(&defstream, Z_FINISH);
deflateEnd(&defstream);
size_t TotalOut = defstream.total_out;
T Ret;
Ret.resize(TotalOut);
std::fill(Ret.begin(), Ret.end(), 0);
std::copy_n(C.begin(), TotalOut, Ret.begin());
return Ret;
}
template <typename T>
inline T DeComp(const T& Compressed) {
std::array<char, Biggest> C {};
// not needed
C.fill(0);
z_stream infstream;
infstream.zalloc = nullptr;
infstream.zfree = nullptr;
infstream.opaque = nullptr;
infstream.avail_in = Biggest;
infstream.next_in = const_cast<Bytef*>(reinterpret_cast<const Bytef*>(&Compressed[0]));
infstream.avail_out = Biggest;
infstream.next_out = const_cast<Bytef*>(reinterpret_cast<const Bytef*>(C.data()));
inflateInit(&infstream);
inflate(&infstream, Z_SYNC_FLUSH);
inflate(&infstream, Z_FINISH);
inflateEnd(&infstream);
size_t TotalOut = infstream.total_out;
T Ret;
Ret.resize(TotalOut);
std::fill(Ret.begin(), Ret.end(), 0);
std::copy_n(C.begin(), TotalOut, Ret.begin());
return Ret;
}
std::vector<uint8_t> Comp(std::span<const uint8_t> input);
std::vector<uint8_t> DeComp(std::span<const uint8_t> input);
std::string GetPlatformAgnosticErrorString();
#define S_DSN SU_RAW