| /////////////////////////////////////////////////////////////////////////////// |
| // // |
| // DxilCompression.h // |
| // Copyright (C) Microsoft Corporation. All rights reserved. // |
| // This file is distributed under the University of Illinois Open Source // |
| // License. See LICENSE.TXT for details. // |
| // // |
| /////////////////////////////////////////////////////////////////////////////// |
| // |
| // Helper wrapper functions for zlib deflate and inflate. Entirely |
| // self-contained, only depends on IMalloc interface. |
| // |
| |
| #pragma once |
| #include <cstddef> |
| struct IMalloc; |
| namespace hlsl { |
| enum class ZlibResult { |
| Success = 0, |
| InvalidData = 1, |
| OutOfMemory = 2, |
| }; |
| |
| ZlibResult ZlibDecompress(IMalloc *pMalloc, const void *pCompressedBuffer, |
| size_t BufferSizeInBytes, void *pUncompressedBuffer, |
| size_t UncompressedBufferSize); |
| |
| // |
| // This is a user-provided callback function. The compression routine does |
| // not need to know how the destination data is being managed. For example: |
| // appending to an std::vector. |
| // |
| // During compression, the routine will call this callback to request the |
| // amount of memory required for the next segment, and then write to it. |
| // |
| // See DxilCompressionHelpers for example of usage. |
| // |
| typedef void *ZlibCallbackFn(void *pUserData, size_t RequiredSize); |
| |
| ZlibResult ZlibCompress(IMalloc *pMalloc, const void *pData, size_t pDataSize, |
| void *pUserData, ZlibCallbackFn *Callback, |
| size_t *pOutCompressedSize); |
| } // namespace hlsl |
