/* libFLAC - Free Lossless Audio Codec library * Copyright (C) 2001-2009  Josh Coalson * Copyright (C) 2011-2022  Xiph.Org Foundation * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * - Neither the name of the Xiph.org Foundation nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifdef HAVE_CONFIG_H#  include <config.h>#endif #ifdef HAVE_STDINT_H#include <stdint.h>#endif #include "private/memory.h"#include "FLAC/assert.h"#include "share/compat.h"#include "share/alloc.h" void *FLAC__memory_alloc_aligned(size_t bytes, void **aligned_address){	void *x; 	FLAC__ASSERT(0 != aligned_address); #ifdef FLAC__ALIGN_MALLOC_DATA	/* align on 32-byte (256-bit) boundary */	x = safe_malloc_add_2op_(bytes, /*+*/31L);	*aligned_address = (void*)(((uintptr_t)x + 31L) & -32L);#else	x = safe_malloc_(bytes);	*aligned_address = x;#endif	return x;} FLAC__bool FLAC__memory_alloc_aligned_int32_array(size_t elements, FLAC__int32 **unaligned_pointer, FLAC__int32 **aligned_pointer){	FLAC__int32 *pu; /* unaligned pointer */	union { /* union needed to comply with C99 pointer aliasing rules */		FLAC__int32 *pa; /* aligned pointer */		void        *pv; /* aligned pointer alias */	} u; 	FLAC__ASSERT(elements > 0);	FLAC__ASSERT(0 != unaligned_pointer);	FLAC__ASSERT(0 != aligned_pointer);	FLAC__ASSERT(unaligned_pointer != aligned_pointer); 	if(elements > SIZE_MAX / sizeof(*pu)) /* overflow check */		return false; 	pu = FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);	if(0 == pu) {		return false;	}	else {		if(*unaligned_pointer != 0)			free(*unaligned_pointer);		*unaligned_pointer = pu;		*aligned_pointer = u.pa;		return true;	}} FLAC__bool FLAC__memory_alloc_aligned_uint32_array(size_t elements, FLAC__uint32 **unaligned_pointer, FLAC__uint32 **aligned_pointer){	FLAC__uint32 *pu; /* unaligned pointer */	union { /* union needed to comply with C99 pointer aliasing rules */		FLAC__uint32 *pa; /* aligned pointer */		void         *pv; /* aligned pointer alias */	} u; 	FLAC__ASSERT(elements > 0);	FLAC__ASSERT(0 != unaligned_pointer);	FLAC__ASSERT(0 != aligned_pointer);	FLAC__ASSERT(unaligned_pointer != aligned_pointer); 	if(elements > SIZE_MAX / sizeof(*pu)) /* overflow check */		return false; 	pu = FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);	if(0 == pu) {		return false;	}	else {		if(*unaligned_pointer != 0)			free(*unaligned_pointer);		*unaligned_pointer = pu;		*aligned_pointer = u.pa;		return true;	}} FLAC__bool FLAC__memory_alloc_aligned_int64_array(size_t elements, FLAC__int64 **unaligned_pointer, FLAC__int64 **aligned_pointer){	FLAC__int64 *pu; /* unaligned pointer */	union { /* union needed to comply with C99 pointer aliasing rules */		FLAC__int64 *pa; /* aligned pointer */		void         *pv; /* aligned pointer alias */	} u; 	FLAC__ASSERT(elements > 0);	FLAC__ASSERT(0 != unaligned_pointer);	FLAC__ASSERT(0 != aligned_pointer);	FLAC__ASSERT(unaligned_pointer != aligned_pointer); 	if(elements > SIZE_MAX / sizeof(*pu)) /* overflow check */		return false; 	pu = FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);	if(0 == pu) {		return false;	}	else {		if(*unaligned_pointer != 0)			free(*unaligned_pointer);		*unaligned_pointer = pu;		*aligned_pointer = u.pa;		return true;	}} FLAC__bool FLAC__memory_alloc_aligned_uint64_array(size_t elements, FLAC__uint64 **unaligned_pointer, FLAC__uint64 **aligned_pointer){	FLAC__uint64 *pu; /* unaligned pointer */	union { /* union needed to comply with C99 pointer aliasing rules */		FLAC__uint64 *pa; /* aligned pointer */		void         *pv; /* aligned pointer alias */	} u; 	FLAC__ASSERT(elements > 0);	FLAC__ASSERT(0 != unaligned_pointer);	FLAC__ASSERT(0 != aligned_pointer);	FLAC__ASSERT(unaligned_pointer != aligned_pointer); 	if(elements > SIZE_MAX / sizeof(*pu)) /* overflow check */		return false; 	pu = FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);	if(0 == pu) {		return false;	}	else {		if(*unaligned_pointer != 0)			free(*unaligned_pointer);		*unaligned_pointer = pu;		*aligned_pointer = u.pa;		return true;	}} FLAC__bool FLAC__memory_alloc_aligned_unsigned_array(size_t elements, uint32_t **unaligned_pointer, uint32_t **aligned_pointer){	uint32_t *pu; /* unaligned pointer */	union { /* union needed to comply with C99 pointer aliasing rules */		uint32_t *pa; /* aligned pointer */		void     *pv; /* aligned pointer alias */	} u; 	FLAC__ASSERT(elements > 0);	FLAC__ASSERT(0 != unaligned_pointer);	FLAC__ASSERT(0 != aligned_pointer);	FLAC__ASSERT(unaligned_pointer != aligned_pointer); 	if(elements > SIZE_MAX / sizeof(*pu)) /* overflow check */		return false; 	pu = FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);	if(0 == pu) {		return false;	}	else {		if(*unaligned_pointer != 0)			free(*unaligned_pointer);		*unaligned_pointer = pu;		*aligned_pointer = u.pa;		return true;	}} #ifndef FLAC__INTEGER_ONLY_LIBRARY FLAC__bool FLAC__memory_alloc_aligned_real_array(size_t elements, FLAC__real **unaligned_pointer, FLAC__real **aligned_pointer){	FLAC__real *pu; /* unaligned pointer */	union { /* union needed to comply with C99 pointer aliasing rules */		FLAC__real *pa; /* aligned pointer */		void       *pv; /* aligned pointer alias */	} u; 	FLAC__ASSERT(elements > 0);	FLAC__ASSERT(0 != unaligned_pointer);	FLAC__ASSERT(0 != aligned_pointer);	FLAC__ASSERT(unaligned_pointer != aligned_pointer); 	if(elements > SIZE_MAX / sizeof(*pu)) /* overflow check */		return false; 	pu = FLAC__memory_alloc_aligned(sizeof(*pu) * elements, &u.pv);	if(0 == pu) {		return false;	}	else {		if(*unaligned_pointer != 0)			free(*unaligned_pointer);		*unaligned_pointer = pu;		*aligned_pointer = u.pa;		return true;	}} #endif void *safe_malloc_mul_2op_p(size_t size1, size_t size2){	if(!size1 || !size2)		return malloc(1); /* malloc(0) is undefined; FLAC src convention is to always allocate */	if(size1 > SIZE_MAX / size2)		return 0;	return malloc(size1*size2);}