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Initial public release of the 2024A software.

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Joe Kearney 2025-01-25 14:04:42 -06:00
parent 7b9ad3edfd
commit 303e9e1dad
361 changed files with 60083 additions and 2 deletions
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managed_components/chmorgan__esp-libhelix-mp3/libhelix-mp3/real/buffers.c Normal file
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/* ***** BEGIN LICENSE BLOCK *****
* Version: RCSL 1.0/RPSL 1.0
*
* Portions Copyright (c) 1995-2002 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
* Version 1.0 (the "RPSL") available at
* http://www.helixcommunity.org/content/rpsl unless you have licensed
* the file under the RealNetworks Community Source License Version 1.0
* (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 MP3 decoder
* Jon Recker (jrecker@real.com), Ken Cooke (kenc@real.com)
* June 2003
*
* buffers.c - allocation and freeing of internal MP3 decoder buffers
*
* All memory allocation for the codec is done in this file, so if you don't want
* to use other the default system malloc() and free() for heap management this is
* the only file you'll need to change.
**************************************************************************************/
//#include "hlxclib/stdlib.h" /* for malloc, free */
#include <stdlib.h>
#include <string.h>
#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)
**************************************************************************************/
static 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 MP3 decoder
*
* Inputs: none
*
* Outputs: none
*
* Return: pointer to MP3DecInfo structure (initialized with pointers to all
* the internal buffers needed for decoding, all other members of
* MP3DecInfo structure set to 0)
*
* Notes: if one or more mallocs fail, function frees any buffers already
* allocated before returning
**************************************************************************************/
MP3DecInfo *AllocateBuffers(void)
{
MP3DecInfo *mp3DecInfo;
FrameHeader *fh;
SideInfo *si;
ScaleFactorInfo *sfi;
HuffmanInfo *hi;
DequantInfo *di;
IMDCTInfo *mi;
SubbandInfo *sbi;
mp3DecInfo = (MP3DecInfo *)malloc(sizeof(MP3DecInfo));
if (!mp3DecInfo)
return 0;
ClearBuffer(mp3DecInfo, sizeof(MP3DecInfo));
fh = (FrameHeader *) malloc(sizeof(FrameHeader));
si = (SideInfo *) malloc(sizeof(SideInfo));
sfi = (ScaleFactorInfo *) malloc(sizeof(ScaleFactorInfo));
hi = (HuffmanInfo *) malloc(sizeof(HuffmanInfo));
di = (DequantInfo *) malloc(sizeof(DequantInfo));
mi = (IMDCTInfo *) malloc(sizeof(IMDCTInfo));
sbi = (SubbandInfo *) malloc(sizeof(SubbandInfo));
mp3DecInfo->FrameHeaderPS = (void *)fh;
mp3DecInfo->SideInfoPS = (void *)si;
mp3DecInfo->ScaleFactorInfoPS = (void *)sfi;
mp3DecInfo->HuffmanInfoPS = (void *)hi;
mp3DecInfo->DequantInfoPS = (void *)di;
mp3DecInfo->IMDCTInfoPS = (void *)mi;
mp3DecInfo->SubbandInfoPS = (void *)sbi;
if (!fh || !si || !sfi || !hi || !di || !mi || !sbi) {
FreeBuffers(mp3DecInfo); /* safe to call - only frees memory that was successfully allocated */
return 0;
}
/* important to do this - DSP primitives assume a bunch of state variables are 0 on first use */
ClearBuffer(fh, sizeof(FrameHeader));
ClearBuffer(si, sizeof(SideInfo));
ClearBuffer(sfi, sizeof(ScaleFactorInfo));
ClearBuffer(hi, sizeof(HuffmanInfo));
ClearBuffer(di, sizeof(DequantInfo));
ClearBuffer(mi, sizeof(IMDCTInfo));
ClearBuffer(sbi, sizeof(SubbandInfo));
return mp3DecInfo;
}
#define SAFE_FREE(x) {if (x) free(x); (x) = 0;} /* helper macro */
/**************************************************************************************
* Function: FreeBuffers
*
* Description: frees all the memory used by the MP3 decoder
*
* Inputs: pointer to initialized MP3DecInfo structure
*
* Outputs: none
*
* Return: none
*
* Notes: safe to call even if some buffers were not allocated (uses SAFE_FREE)
**************************************************************************************/
void FreeBuffers(MP3DecInfo *mp3DecInfo)
{
if (!mp3DecInfo)
return;
SAFE_FREE(mp3DecInfo->FrameHeaderPS);
SAFE_FREE(mp3DecInfo->SideInfoPS);
SAFE_FREE(mp3DecInfo->ScaleFactorInfoPS);
SAFE_FREE(mp3DecInfo->HuffmanInfoPS);
SAFE_FREE(mp3DecInfo->DequantInfoPS);
SAFE_FREE(mp3DecInfo->IMDCTInfoPS);
SAFE_FREE(mp3DecInfo->SubbandInfoPS);
SAFE_FREE(mp3DecInfo);
}