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diff --git a/audio_codec/wfd_aac_decoder/buffers.c b/audio_codec/wfd_aac_decoder/buffers.c new file mode 100644 index 0000000..2428213 --- a/dev/null +++ b/audio_codec/wfd_aac_decoder/buffers.c @@ -0,0 +1,140 @@ +/* ***** BEGIN LICENSE BLOCK ***** + * Source last modified: $Id: buffers.c,v 1.1.2.1 2005/02/26 02:05:12 jrecker Exp $ + * + * Portions Copyright (c) 1995-2005 RealNetworks, Inc. All Rights Reserved. + * + * The contents of this file, and the files included with this file, + * are subject to the current version of the RealNetworks Public + * Source License (the "RPSL") available at + * http://www.helixcommunity.org/content/rpsl unless you have licensed + * the file under the current version of the RealNetworks Community + * Source License (the "RCSL") available at + * http://www.helixcommunity.org/content/rcsl, in which case the RCSL + * will apply. You may also obtain the license terms directly from + * RealNetworks. You may not use this file except in compliance with + * the RPSL or, if you have a valid RCSL with RealNetworks applicable + * to this file, the RCSL. Please see the applicable RPSL or RCSL for + * the rights, obligations and limitations governing use of the + * contents of the file. + * + * This file is part of the Helix DNA Technology. RealNetworks is the + * developer of the Original Code and owns the copyrights in the + * portions it created. + * + * This file, and the files included with this file, is distributed + * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY + * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS + * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET + * ENJOYMENT OR NON-INFRINGEMENT. + * + * Technology Compatibility Kit Test Suite(s) Location: + * http://www.helixcommunity.org/content/tck + * + * Contributor(s): + * + * ***** END LICENSE BLOCK ***** */ + +/************************************************************************************** + * Fixed-point HE-AAC decoder + * Jon Recker (jrecker@real.com) + * February 2005 + * + * buffers.c - allocation and deallocation of internal AAC decoder buffers + **************************************************************************************/ + +#ifdef USE_DEFAULT_STDLIB +#include <stdlib.h> +#else +#include "hlxclib/stdlib.h" +#endif + +#include "coder.h" + +/************************************************************************************** + * Function: ClearBuffer + * + * Description: fill buffer with 0's + * + * Inputs: pointer to buffer + * number of bytes to fill with 0 + * + * Outputs: cleared buffer + * + * Return: none + * + * Notes: slow, platform-independent equivalent to memset(buf, 0, nBytes) + **************************************************************************************/ +void ClearBuffer(void *buf, int nBytes) +{ + int i; + unsigned char *cbuf = (unsigned char *)buf; + + for (i = 0; i < nBytes; i++) { + cbuf[i] = 0; + } + + return; +} + +/************************************************************************************** + * Function: AllocateBuffers + * + * Description: allocate all the memory needed for the AAC decoder + * + * Inputs: none + * + * Outputs: none + * + * Return: pointer to AACDecInfo structure, cleared to all 0's (except for + * pointer to platform-specific data structure) + * + * Notes: if one or more mallocs fail, function frees any buffers already + * allocated before returning + **************************************************************************************/ +AACDecInfo *AllocateBuffers(void) +{ + AACDecInfo *aacDecInfo; + + aacDecInfo = (AACDecInfo *)malloc(sizeof(AACDecInfo)); + if (!aacDecInfo) { + return 0; + } + ClearBuffer(aacDecInfo, sizeof(AACDecInfo)); + + aacDecInfo->psInfoBase = malloc(sizeof(PSInfoBase)); + if (!aacDecInfo->psInfoBase) { + FreeBuffers(aacDecInfo); + return 0; + } + ClearBuffer(aacDecInfo->psInfoBase, sizeof(PSInfoBase)); + + return aacDecInfo; +} + +#ifndef SAFE_FREE +#define SAFE_FREE(x) {if (x) free(x); (x) = 0;} /* helper macro */ +#endif + +/************************************************************************************** + * Function: FreeBuffers + * + * Description: frees all the memory used by the AAC decoder + * + * Inputs: pointer to initialized AACDecInfo structure + * + * Outputs: none + * + * Return: none + * + * Notes: safe to call even if some buffers were not allocated (uses SAFE_FREE) + **************************************************************************************/ +void FreeBuffers(AACDecInfo *aacDecInfo) +{ + if (!aacDecInfo) { + return; + } + + SAFE_FREE(aacDecInfo->psInfoBase); + SAFE_FREE(aacDecInfo); +} |