Diff: DuerOS-Light-SDK-v1.1.0/duer-os-light/external/mp3dec/real/assembly.h

Revision:

47:9e361da97763

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DuerOS-Light-SDK-v1.1.0/duer-os-light/external/mp3dec/real/assembly.h	Tue Jul 18 16:54:45 2017 +0800
@@ -0,0 +1,174 @@
+/* ***** 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
+ *
+ * assembly.h - assembly language functions and prototypes for supported platforms
+ *
+ * - inline rountines with access to 64-bit multiply results 
+ * - x86 (_WIN32) and ARM (ARM_ADS, _WIN32_WCE) versions included
+ * - some inline functions are mix of asm and C for speed
+ * - some functions are in native asm files, so only the prototype is given here
+ *
+ * MULSHIFT32(x, y)    signed multiply of two 32-bit integers (x and y), returns top 32 bits of 64-bit result
+ * FASTABS(x)          branchless absolute value of signed integer x
+ * CLZ(x)              count leading zeros in x
+ * MADD64(sum, x, y)   (Windows only) sum [64-bit] += x [32-bit] * y [32-bit]
+ * SHL64(sum, x, y)    (Windows only) 64-bit left shift using __int64
+ * SAR64(sum, x, y)    (Windows only) 64-bit right shift using __int64
+ */
+
+#ifndef _ASSEMBLY_H
+#define _ASSEMBLY_H
+
+#include <stdint.h> 
+
+#define RDA5991H
+
+#if defined(RDA5991H)
+
+#if defined(__ICCARM__)
+#define __inline __INLINE
+#endif
+
+#if 1
+static __inline int FASTABS(int x)
+{
+  return((x > 0) ? x : -(x));
+}
+#endif
+
+#if 0
+static __inline int CLZ(int x)
+{
+  return __CLZ(x);
+}
+#endif
+
+#if 0
+static __inline int CLZ(int x)
+{
+	int numZeros;
+
+	if (!x)
+		return (sizeof(int) * 8);
+
+	numZeros = 0;
+	while (!(x & 0x80000000)) {
+		numZeros++;
+		x <<= 1;
+	} 
+
+	return numZeros;
+}
+#endif
+
+#if 1
+static __inline int CLZ(int x)
+{
+	int numZeros;
+		
+	if (!x)
+		return (sizeof(int) * 8);
+	
+	__asm{
+		CLZ numZeros, x
+	}
+
+	return numZeros;
+}
+#endif
+
+#if 1
+static __inline int64_t SAR64(int64_t x, int n)
+{
+  return (x >> n);
+}
+#endif
+
+#if 1
+static __inline int MULSHIFT32(int x, int y)
+{
+  int64_t tmp;
+
+  tmp = ((int64_t)x * (int64_t)y);
+  return (tmp>>32);
+}
+#endif
+
+#if 0
+static int __inline MULSHIFT32(int x, int y)
+{
+	int tmp;
+	
+	__asm{
+		SMULL tmp, y, x, y
+	}
+
+	return y;
+}
+#endif
+
+#if 1
+static __inline int64_t MADD64(int64_t sum64, int x, int y)
+{
+  return (sum64 + (int64_t)x * (int64_t)y);
+}
+#endif
+
+#if 0
+static __inline int64_t MADD64(int64_t sum64, int x, int y)
+{
+	unsigned int sum64Lo = ((unsigned int *)&sum64)[0];
+	int sum64Hi = ((int *)&sum64)[1];
+	
+	__asm{
+		SMLAL sum64Lo, sum64Hi, x, y
+	}
+
+	sum64 = (((int64_t) sum64Hi) << 32) | sum64Lo;
+	
+	return sum64;
+}
+#endif
+
+#else
+#error No assembly defined. See valid options in assembly.h
+#endif /** RDA5991H */
+
+#endif /* _ASSEMBLY_H */