zdoom/raze
0
0
Fork 0
mirror of https://github.com/ZDoom/Raze.git synced 2025-05-30 00:41:24 +00:00
Code Issues Projects Releases Packages Wiki Activity

- implemented savegame compression

Browse source 
Unfortunately necessary because Ion Fury savegames store 120 GB(!!) of data, mostly zeros.

Unlike the old method, this compresses the entire savegame as one block using a ZLib stream so it should be a lot more efficient now.
This commit is contained in:
Christoph Oelckers 2019-11-08 01:36:32 +01:00
parent a40be954f1
commit 4fc56203c2
5 changed files with 256 additions and 55 deletions
Download patch file Download diff file Expand all files Collapse all files

29
source/common/utility/files.h
View file

@ -56,6 +56,7 @@ enum
METHOD_PPMD = 98,
METHOD_LZSS = 1337, // not used in Zips - this is for Console Doom compression
METHOD_ZLIB = 1338, // Zlib stream with header, used by compressed nodes.
METHOD_TRANSFEROWNER = 0x8000,
};
class FileReaderInterface
@ -85,6 +86,11 @@ public:
{
ErrorCallback = cb;
}
void SetOwnsReader();
protected:
FileReader *File = nullptr;
FileReader OwnedFile;
};
class MemoryReader : public FileReaderInterface
@ -316,7 +322,7 @@ public:
}
virtual ~FileWriter()
{
if (File != NULL) fclose(File);
Close();
}
static FileWriter *Open(const char *filename);
@ -325,7 +331,7 @@ public:
virtual long Tell();
virtual long Seek(long offset, int mode);
size_t Printf(const char *fmt, ...) GCCPRINTF(2,3);
void Close()
virtual void Close()
{
if (File != NULL) fclose(File);
File = nullptr;
@ -351,4 +357,23 @@ public:
TArray<unsigned char>&& TakeBuffer() { return std::move(mBuffer); }
};
class CompressedFileWriter : public FileWriter
{
FileWriter *target;
struct z_stream_s *zipstream;
uint8_t outbuf[1024];
size_t compressedSize;
bool ownsWriter;
size_t WriteBlock(const void *buffer, size_t bytes);
public:
CompressedFileWriter(FileWriter *wr, bool transfer = false);
CompressedFileWriter(FILE *wr);
~CompressedFileWriter() { Close(); }
virtual size_t Write(const void *buffer, size_t len) override;
virtual void Close() override;
};
#endif