OpenTTD
|
Filter using Zlib compression. More...
Public Member Functions | |
ZlibSaveFilter (SaveFilter *chain, byte compression_level) | |
Initialise this filter. | |
~ZlibSaveFilter () | |
Clean up what we allocated. | |
void | WriteLoop (byte *p, size_t len, int mode) |
Helper loop for writing the data. | |
void | Write (byte *buf, size_t size) |
Write a given number of bytes into the savegame. | |
void | Finish () |
Prepare everything to finish writing the savegame. | |
![]() | |
SaveFilter (SaveFilter *chain) | |
Initialise this filter. | |
virtual | ~SaveFilter () |
Make sure the writers are properly closed. |
Data Fields | |
z_stream | z |
Stream state we are writing to. | |
![]() | |
SaveFilter * | chain |
Chained to the (savegame) filters. |
Filter using Zlib compression.
Definition at line 2143 of file saveload.cpp.
|
inline |
Initialise this filter.
chain | The next filter in this chain. |
compression_level | The requested level of compression. |
Definition at line 2151 of file saveload.cpp.
|
inline |
|
inlinevirtual |
Write a given number of bytes into the savegame.
buf | The bytes to write. |
len | The number of bytes to write. |
Implements SaveFilter.
Definition at line 2198 of file saveload.cpp.
References WriteLoop().
|
inline |
Helper loop for writing the data.
p | The bytes to write. |
len | Amount of bytes to write. |
mode | Mode for deflate. |
For the poor next soul who sees many valgrind warnings of the "Conditional jump or move depends on uninitialised value(s)" kind: According to the author of zlib it is not a bug and it won't be fixed. http://groups.google.com/group/comp.compression/browse_thread/thread/b154b8def8c2a3ef/cdf9b8729ce17ee2 [Mark Adler, Feb 24 2004, 'zlib-1.2.1 valgrind warnings' in the newsgroup comp.compression]
Definition at line 2169 of file saveload.cpp.
References SaveFilter::chain, MEMORY_CHUNK_SIZE, SlError(), SaveFilter::Write(), and z.