big merge

components/spotify/cspot/bell/libhelix-aac/buffers.c

@@ -0,0 +1,165 @@
+/* ***** BEGIN LICENSE BLOCK *****  
+ * Source last modified: $Id: buffers.c,v 1.1 2005/02/26 01:47:34 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
+ **************************************************************************************/
+
+#if defined(USE_DEFAULT_STDLIB) || defined(ESP_PLATFORM)
+#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)
+ **************************************************************************************/
+#include <string.h>
+ void ClearBuffer(void *buf, int nBytes)
+{
+/*	int i;
+	unsigned char *cbuf = (unsigned char *)buf;
+
+	for (i = 0; i < nBytes; i++)
+		cbuf[i] = 0;
+
+	return;
+	*/
+	memset(buf, 0, nBytes);
+}
+
+/**************************************************************************************
+ * 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;
+}
+
+AACDecInfo *AllocateBuffersPre(void **ptr, int *sz)
+{
+        AACDecInfo *aacDecInfo;
+
+        char *p = (char*)*ptr;
+        aacDecInfo = (AACDecInfo *)p;
+        p += (sizeof(AACDecInfo) +7 ) & ~7;
+        *sz -= (sizeof(AACDecInfo) +7 ) & ~7;
+        if (*sz < 0)
+                return 0;
+        ClearBuffer(aacDecInfo, sizeof(AACDecInfo));
+
+        aacDecInfo->psInfoBase = (PSInfoBase*)p;
+        p += (sizeof(PSInfoBase) + 7) & ~7;
+        *sz -= (sizeof(PSInfoBase) + 7) & ~7;
+        if (*sz <0) {
+                return 0;
+        }
+        ClearBuffer(aacDecInfo->psInfoBase, sizeof(PSInfoBase));
+
+	*ptr = p;
+
+        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);
+}