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Initial import of libFLAC from flac-1.1.2.tar.gz

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5983 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Dave Chapman 2005-02-16 19:33:19 +00:00
parent 9b32a1988f
commit aa97e4d498
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apps/codecs/libFLAC/memory.c Normal file
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/* libFLAC - Free Lossless Audio Codec library
* Copyright (C) 2001,2002,2003,2004,2005 Josh Coalson
*
* 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.
*/
#include "private/memory.h"
#include "FLAC/assert.h"
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
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 = malloc(bytes+31);
*aligned_address = (void*)(((unsigned)x + 31) & -32);
#else
x = malloc(bytes);
*aligned_address = x;
#endif
return x;
}
FLAC__bool FLAC__memory_alloc_aligned_int32_array(unsigned 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);
pu = (FLAC__int32*)FLAC__memory_alloc_aligned(sizeof(FLAC__int32) * 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(unsigned 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);
pu = (FLAC__uint32*)FLAC__memory_alloc_aligned(sizeof(FLAC__uint32) * 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(unsigned 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);
pu = (FLAC__uint64*)FLAC__memory_alloc_aligned(sizeof(FLAC__uint64) * 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(unsigned elements, unsigned **unaligned_pointer, unsigned **aligned_pointer)
{
unsigned *pu; /* unaligned pointer */
union { /* union needed to comply with C99 pointer aliasing rules */
unsigned *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);
pu = (unsigned*)FLAC__memory_alloc_aligned(sizeof(unsigned) * 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(unsigned 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);
pu = (FLAC__real*)FLAC__memory_alloc_aligned(sizeof(FLAC__real) * 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