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0ad/source/lib/res/file/compression.h

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v2 of file/res code for thesis: previous zip.* split up into archive, zip and compression. add O(1) lookup via memento. add support for writing Zip archive. simplify IO by having compression module allow queuing input buffers. file: split up into file, file_Io, file_cache. add atom_fn that enables string comparison via pointer compare. (stores all filenames/paths in one place). add statistics gathering. file_cache: landlord algorithm for caching files as well as LRU block cache. file_io: aio code that splits transfers into blocks revamped and made into class. vfs: filelist/trace code moved into new vfs_optimizer. add caching logic to vfs_load. vfs_optimizer: will generate zip archive (to replace current archive builder script). not yet done vfs_tree: major cleanup - now has nice base class rather than union hackery. This was SVN commit r3420.
2006-01-23 21:05:09 +01:00
#ifndef COMPRESSION_H__
#define COMPRESSION_H__
enum ContextType
{
CT_COMPRESSION,
CT_DECOMPRESSION
};
enum CompressionMethod
{
CM_NONE,
// zlib "deflate" - see RFC 1750, 1751.
CM_DEFLATE
};
extern uintptr_t comp_alloc(ContextType type, CompressionMethod method);
extern void comp_set_output(uintptr_t ctx, void* out, size_t out_size);
extern LibError comp_alloc_output(uintptr_t c_, size_t in_size);
extern void* comp_get_output(uintptr_t ctx_);
extern ssize_t comp_feed(uintptr_t ctx, const void* in, size_t in_size);
extern LibError comp_finish(uintptr_t ctx, void** out, size_t* out_size);
Cache: implement meat of landlord algorithm and add remove() allocators: add freelist capability to Bucket; add provision for variable XOR fixed size allocs archive: re-tag file buffers if reading uncompressed from archive; improve LFH fixup logic file_cache: add cache line invalidation; lock down pages (readonly) when IO finished file_io: cleanup+docs; properly cut off at EOF without breaking alignment. file_stats: add seek accounting (WIP) vfs_optimizer: also record file_buf_free in the trace. initial implementation of archive builder (WIP) zip: lfh_fixup now more efficient (does not involve buffer manager - instead it grabs LFH from temp blocks) tex: plug FileIOBuf leak. avoid writing to tex.hm because that is a read-only file_buf. This was SVN commit r3428.
2006-01-28 23:19:42 +01:00
extern LibError comp_reset(uintptr_t ctx);
v2 of file/res code for thesis: previous zip.* split up into archive, zip and compression. add O(1) lookup via memento. add support for writing Zip archive. simplify IO by having compression module allow queuing input buffers. file: split up into file, file_Io, file_cache. add atom_fn that enables string comparison via pointer compare. (stores all filenames/paths in one place). add statistics gathering. file_cache: landlord algorithm for caching files as well as LRU block cache. file_io: aio code that splits transfers into blocks revamped and made into class. vfs: filelist/trace code moved into new vfs_optimizer. add caching logic to vfs_load. vfs_optimizer: will generate zip archive (to replace current archive builder script). not yet done vfs_tree: major cleanup - now has nice base class rather than union hackery. This was SVN commit r3420.
2006-01-23 21:05:09 +01:00
extern void comp_free(uintptr_t ctx);
#endif // #ifndef COMPRESSION_H__
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