127 lines
3 KiB
C
127 lines
3 KiB
C
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#ifndef _PATCH_LZX_H_
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#define _PATCH_LZX_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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//
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// The patch code is using the LZX_MAXWINDOW value to compute
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// progress ranges. We need a better way to compute progress
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// ranges that doesn't need to know the details of the underlying
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// compression engine.
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//
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#define LZX_MAXWINDOW_8 (8*1024*1024) // 8MB
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#define LZX_MAXWINDOW_32 (32*1024*1024) // 32MB
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#ifndef PFNALLOC
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typedef PVOID ( __fastcall * PFNALLOC )( HANDLE hAllocator, ULONG Size );
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#endif
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//
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// The PFNALLOC function must return zeroed memory its caller, or NULL to
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// indicate insufficient memory.
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//
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// Note that no PFNFREE corresponding to PFNALLOC is specified. Functions
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// that take a PFNALLOC parameter use that routine for multiple allocations,
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// but it is the responsibility of the caller to free any allocations made
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// through the PFNALLOC allocator after the function has returned. This
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// scheme is used to facilitate multiple allocations that can be freed with
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// a single call such as a HeapCreate/HeapAlloc[...]/HeapDestroy sequence.
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//
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ULONG
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WINAPI
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EstimateLzxCompressionMemoryRequirement(
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IN ULONG OldDataSize,
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IN ULONG NewDataSize,
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IN ULONG OptionFlags
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);
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ULONG
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WINAPI
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EstimateLzxDecompressionMemoryRequirement(
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IN ULONG OldDataSize,
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IN ULONG NewDataSize,
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IN ULONG OptionFlags
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);
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ULONG
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WINAPI
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RawLzxCompressBuffer(
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IN PVOID InDataBuffer,
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IN ULONG InDataSize,
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IN ULONG OutDataBufferSize,
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OUT PVOID OutDataBuffer OPTIONAL,
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OUT PULONG OutDataSize,
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IN PFNALLOC pfnAlloc,
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IN HANDLE AllocHandle,
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IN PPATCH_PROGRESS_CALLBACK ProgressCallback,
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IN PVOID CallbackContext,
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IN ULONG ProgressInitialValue,
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IN ULONG ProgressMaximumValue
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);
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ULONG
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WINAPI
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CreateRawLzxPatchDataFromBuffers(
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IN PVOID OldDataBuffer,
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IN ULONG OldDataSize,
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IN PVOID NewDataBuffer,
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IN ULONG NewDataSize,
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IN ULONG PatchBufferSize,
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OUT PVOID PatchBuffer,
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OUT ULONG *PatchSize,
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IN ULONG OptionFlags,
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IN PVOID OptionData,
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IN PFNALLOC pfnAlloc,
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IN HANDLE AllocHandle,
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IN PPATCH_PROGRESS_CALLBACK ProgressCallback,
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IN PVOID CallbackContext,
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IN ULONG ProgressInitialValue,
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IN ULONG ProgressMaximumValue
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);
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ULONG
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WINAPI
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ApplyRawLzxPatchToBuffer(
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IN PVOID OldDataBuffer,
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IN ULONG OldDataSize,
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IN PVOID PatchDataBuffer,
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IN ULONG PatchDataSize,
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OUT PVOID NewDataBuffer,
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IN ULONG NewDataSize,
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IN ULONG OptionFlags,
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IN PVOID OptionData,
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IN PFNALLOC pfnAlloc,
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IN HANDLE AllocHandle,
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IN PPATCH_PROGRESS_CALLBACK ProgressCallback,
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IN PVOID CallbackContext,
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IN ULONG ProgressInitialValue,
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IN ULONG ProgressMaximumValue
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);
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ULONG
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__fastcall
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LzxWindowSize(
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IN ULONG OldDataSize,
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IN ULONG NewDataSize,
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IN DWORD OptionFlags
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);
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ULONG
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__fastcall
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LzxInsertSize(
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IN ULONG OldDataSize,
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IN DWORD OptionFlags
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);
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#ifdef __cplusplus
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}
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#endif
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#endif // _PATCH_LZX_H_
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