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Switched some code to size_t for compatibility with Miniz.

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This commit is contained in:
David Williams 2013-10-04 13:30:30 +02:00
parent 4d683627da
commit 1531e1cd00
2 changed files with 7 additions and 11 deletions
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4
library/PolyVoxCore/include/PolyVoxCore/MinizBlockCompressor.h
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@ -46,8 +46,8 @@ namespace PolyVox
private:
uint32_t getExpectedCompressedSize(uint32_t uUncompressedInputSize);
uint32_t getMaxCompressedSize(uint32_t uUncompressedInputSize);
uint32_t compressWithMiniz(const void* pSrcData, uint32_t uSrcLength, void* pDstData, uint32_t uDstLength);
uint32_t decompressWithMiniz(const void* pSrcData, uint32_t uSrcLength, void* pDstData, uint32_t uDstLength);
uint32_t compressWithMiniz(const void* pSrcData, size_t uSrcLength, void* pDstData, size_t uDstLength);
uint32_t decompressWithMiniz(const void* pSrcData, size_t uSrcLength, void* pDstData, size_t uDstLength);
unsigned int m_uCompressionFlags;

14
library/PolyVoxCore/include/PolyVoxCore/MinizBlockCompressor.inl
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@ -122,8 +122,8 @@ namespace PolyVox
// Get raw pointers so that the data can be decompressed directly into the destination block.
const void* pSrcData = reinterpret_cast<const void*>(pSrcBlock->getData());
void* pDstData = reinterpret_cast<void*>(pDstBlock->getData());
uint32_t uSrcLength = pSrcBlock->getDataSizeInBytes();
uint32_t uDstLength = pDstBlock->getDataSizeInBytes();
size_t uSrcLength = pSrcBlock->getDataSizeInBytes();
size_t uDstLength = pDstBlock->getDataSizeInBytes();
// Perform the decompression
uint32_t uUncompressedLength = decompressWithMiniz(pSrcData, uSrcLength, pDstData, uDstLength);
@ -180,7 +180,7 @@ namespace PolyVox
}
template <typename VoxelType>
uint32_t MinizBlockCompressor<VoxelType>::decompressWithMiniz(const void* pSrcData, uint32_t uSrcLength, void* pDstData, uint32_t uDstLength)
uint32_t MinizBlockCompressor<VoxelType>::decompressWithMiniz(const void* pSrcData, size_t uSrcLength, void* pDstData, size_t uDstLength)
{
// I don't know exactly why this limitation exists but it's an implementation detail of miniz. It shouldn't matter for our purposes
// as our destination is a Block and those are always a power of two. If you need to use this code for other purposes then you'll
@ -188,17 +188,13 @@ namespace PolyVox
// but that means enabling parts of the miniz API which are #defined out at the top of this file.
POLYVOX_THROW_IF(isPowerOf2(uDstLength) == false, std::invalid_argument, "Miniz decompressor requires the destination buffer to have a size which is a power of two.");
// Change the type to avoid compiler warnings
size_t ulSrcLength = uSrcLength;
size_t ulDstLength = uDstLength;
// Create and initialise the decompressor (I believe this is much small than the compressor).
tinfl_decompressor inflator;
tinfl_init(&inflator);
// Do the decompression. In some scenarios 'tinfl_decompress' would be called multiple times with the same dest buffer but
// different locations within it. In our scenario it's only called once so the start and the location are the same (both pDstData).
tinfl_status status = tinfl_decompress(&inflator, (const mz_uint8 *)pSrcData, &ulSrcLength, (mz_uint8 *)pDstData, (mz_uint8 *)pDstData, &ulDstLength, TINFL_FLAG_PARSE_ZLIB_HEADER);
tinfl_status status = tinfl_decompress(&inflator, (const mz_uint8 *)pSrcData, &uSrcLength, (mz_uint8 *)pDstData, (mz_uint8 *)pDstData, &uDstLength, TINFL_FLAG_PARSE_ZLIB_HEADER);
//Check whether the decompression was successful.
if (status != TINFL_STATUS_DONE)
@ -209,6 +205,6 @@ namespace PolyVox
}
// The decompression modifies 'ulDstLength' to hold the new length.
return ulDstLength;
return uDstLength;
}
}