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// Copyright 2012 Google Inc. All Rights Reserved.
//
// This code is licensed under the same terms as WebM:
// Software License Agreement: http://www.webmproject.org/license/software/
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// Misc. common utility functions
//
// Author: Skal (pascal.massimino@gmail.com)
#include <stdlib.h>
#include "./utils.h"
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
//------------------------------------------------------------------------------
// Checked memory allocation
static int CheckSizeArguments(uint64_t nmemb, size_t size) {
const uint64_t total_size = nmemb * size;
if (nmemb == 0) return 1;
if ((uint64_t)size > WEBP_MAX_ALLOCABLE_MEMORY / nmemb) return 0;
if (total_size != (size_t)total_size) return 0;
return 1;
}
void* WebPSafeMalloc(uint64_t nmemb, size_t size) {
if (!CheckSizeArguments(nmemb, size)) return NULL;
return malloc((size_t)(nmemb * size));
}
void* WebPSafeCalloc(uint64_t nmemb, size_t size) {
if (!CheckSizeArguments(nmemb, size)) return NULL;
return calloc((size_t)nmemb, size);
}
//------------------------------------------------------------------------------
#if defined(__cplusplus) || defined(c_plusplus)
} // extern "C"
#endif
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