45 lines
1.6 KiB
C
45 lines
1.6 KiB
C
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// Copyright 2012 Google Inc. All Rights Reserved.
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//
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// This code is licensed under the same terms as WebM:
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// Software License Agreement: http://www.webmproject.org/license/software/
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// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
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// -----------------------------------------------------------------------------
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//
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// Misc. common utility functions
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//
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// Author: Skal (pascal.massimino@gmail.com)
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#ifndef WEBP_UTILS_UTILS_H_
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#define WEBP_UTILS_UTILS_H_
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#include "../types.h"
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#if defined(__cplusplus) || defined(c_plusplus)
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extern "C" {
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#endif
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//------------------------------------------------------------------------------
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// Memory allocation
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// This is the maximum memory amount that libwebp will ever try to allocate.
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#define WEBP_MAX_ALLOCABLE_MEMORY (1ULL << 40)
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// size-checking safe malloc/calloc: verify that the requested size is not too
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// large, or return NULL. You don't need to call these for constructs like
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// malloc(sizeof(foo)), but only if there's picture-dependent size involved
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// somewhere (like: malloc(num_pixels * sizeof(*something))). That's why this
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// safe malloc() borrows the signature from calloc(), pointing at the dangerous
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// underlying multiply involved.
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void* WebPSafeMalloc(uint64_t nmemb, size_t size);
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// Note that WebPSafeCalloc() expects the second argument type to be 'size_t'
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// in order to favor the "calloc(num_foo, sizeof(foo))" pattern.
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void* WebPSafeCalloc(uint64_t nmemb, size_t size);
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//------------------------------------------------------------------------------
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#if defined(__cplusplus) || defined(c_plusplus)
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} // extern "C"
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#endif
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#endif /* WEBP_UTILS_UTILS_H_ */
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