ref: cebf586c3a9cb74147ab29d72d123c73875c7a41
dir: /codec/processing/src/common/memory.cpp/
/*! * \copy * Copyright (c) 2013, Cisco Systems * All rights reserved. * * 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. * * 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 * COPYRIGHT HOLDER 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 "memory.h" WELSVP_NAMESPACE_BEGIN ///////////////////////////////////////////////////////////////////////////////// void* WelsMalloc (const uint32_t kuiSize, char* pTag) { const int32_t kiSizeVoidPointer = sizeof (void**); const int32_t kiSizeInt32 = sizeof (int32_t); const int32_t kiAlignedBytes = ALIGNBYTES - 1; uint8_t* pBuf = (uint8_t*) ::malloc (kuiSize + kiAlignedBytes + kiSizeVoidPointer + kiSizeInt32); uint8_t* pAlignedBuf = NULL; if (NULL == pBuf) return NULL; // to fill zero values WelsMemset (pBuf, 0, kuiSize + kiAlignedBytes + kiSizeVoidPointer + kiSizeInt32); pAlignedBuf = pBuf + kiAlignedBytes + kiSizeVoidPointer + kiSizeInt32; pAlignedBuf -= WelsCastFromPointer (pAlignedBuf) & kiAlignedBytes; * ((void**) (pAlignedBuf - kiSizeVoidPointer)) = pBuf; * ((int32_t*) (pAlignedBuf - (kiSizeVoidPointer + kiSizeInt32))) = kuiSize; return (pAlignedBuf); } ///////////////////////////////////////////////////////////////////////////// void WelsFree (void* pPointer, char* pTag) { if (pPointer) { ::free (* (((void**) pPointer) - 1)); } } ///////////////////////////////////////////////////////////////////////////// void* InternalReallocate (void* pPointer, const uint32_t kuiSize, char* pTag) { uint32_t iOldSize = 0; uint8_t* pNew = NULL; if (pPointer != NULL) iOldSize = * ((int32_t*) ((uint8_t*) pPointer - sizeof (void**) - sizeof (int32_t))); else return WelsMalloc (kuiSize, pTag); pNew = (uint8_t*)WelsMalloc (kuiSize, pTag); if (0 == pNew) { if (iOldSize > 0 && kuiSize > 0 && iOldSize >= kuiSize) return (pPointer); return 0; } else if (iOldSize > 0 && kuiSize > 0) memcpy (pNew, pPointer, (iOldSize < kuiSize) ? iOldSize : kuiSize); else return 0; WelsFree (pPointer, pTag); return (pNew); } ///////////////////////////////////////////////////////////////////////////// void* WelsRealloc (void* pPointer, uint32_t* pRealSize, const uint32_t kuiSize, char* pTag) { const uint32_t kuiOldSize = *pRealSize; uint32_t kuiNewSize = 0; void* pLocalPointer = NULL; if (kuiOldSize >= kuiSize) // large enough of original block, so do nothing return (pPointer); // new request kuiNewSize = kuiSize + 15; kuiNewSize -= (kuiNewSize & 15); kuiNewSize += 32; pLocalPointer = InternalReallocate (pPointer, kuiNewSize, pTag); if (NULL != pLocalPointer) { *pRealSize = kuiNewSize; return (pLocalPointer); } else { return NULL; } return NULL; // something wrong } WELSVP_NAMESPACE_END