Initial public release of the 2024A software.

managed_components/chmorgan__esp-libhelix-mp3/libhelix-mp3/testwrap/timing.c

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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
+ *
+ * timing.c - implementations of CPU timing functions
+ **************************************************************************************/
+
+#include "timing.h"
+
+/* NOTES: 
+ * - for armulator (ARM_ADS) use -clock 100 (100 Hz system clock) for accurate
+ *     timing since CLOCKS_PER_SEC = 100 (this only works for zero wait-state
+ *     memory unless you adjust memory timings accordingly)
+ * - other option for armulator is to simulate accurate hardware timers (see below)
+ */
+#if (defined (_WIN32) && !defined (_WIN32_WCE)) || defined (ARM_ADS) || (defined (__GNUC__) && defined (ARM))
+
+#include <time.h>
+
+int InitTimer(void)
+{
+    return 0;
+}
+
+UINT ReadTimer(void)
+{
+    return clock();
+}
+
+int FreeTimer(void)
+{
+    return 0;
+}
+
+UINT GetClockFrequency(void)
+{
+    return CLOCKS_PER_SEC;
+}
+
+UINT GetClockDivFactor(void)
+{
+    return 1;
+}
+
+UINT CalcTimeDifference(UINT startTime, UINT endTime)
+{
+    /* timer counts up on x86, 32-bit counter */
+    if (endTime < startTime)
+		return (0x7fffffff - (startTime - endTime) );
+    else
+		return (endTime - startTime);
+}
+#elif defined (_WIN32) && defined (_WIN32_WCE)
+
+#include <windows.h>
+
+int InitTimer(void)
+{
+    return 0;
+}
+
+UINT ReadTimer(void)
+{
+    return GetTickCount();
+}
+
+int FreeTimer(void)
+{
+    return 0;
+}
+
+UINT GetClockFrequency(void)
+{
+    return 1000;
+}
+
+UINT GetClockDivFactor(void)
+{
+    return 1;
+}
+
+UINT CalcTimeDifference(UINT startTime, UINT endTime)
+{
+    /* timer counts up on x86, 32-bit counter */
+    if (endTime < startTime)
+		return (0x7fffffff - (startTime - endTime) );
+    else
+		return (endTime - startTime);
+}
+
+#elif 0	/* if defined ARM_ADS - this uses simulated high-res hardware timers */
+
+/* see definitions in ADSv1_2/bin/peripherals.ami */
+#define TIMER_BASE		0x0a800000
+#define TIMER_VALUE_1	(TIMER_BASE + 0x04)
+#define TIMER_CONTROL_1	(TIMER_BASE + 0x08)
+
+int InitTimer(void)
+{
+	volatile unsigned int *timerControl1 = (volatile unsigned int *)TIMER_CONTROL_1;
+	unsigned int control1;
+	
+	/* see ARMulator Reference, pg 4-78 
+	 * bits [3:2] = clock divisor factor (00 = 1, 01 = 16, 10 = 256, 11 = undef)
+	 * bit  [6]   = free-running mode (0) or periodic mode (1)
+	 * bit  [7]   = timer disabled (0) or enabled (1)
+	 */
+	control1 = 0x00000088;
+	*timerControl1 = control1;
+	
+	return 0;
+}
+
+UINT ReadTimer(void)
+{
+	volatile unsigned int *timerValue1 = (volatile unsigned int *)TIMER_VALUE_1;
+	unsigned int value;
+	
+	value = *timerValue1 & 0x0000ffff;
+	
+	return (UINT)value;
+}
+
+int FreeTimer(void)
+{
+    return 0;
+}
+
+UINT GetClockFrequency(void)
+{
+    return 0;
+}
+
+UINT GetClockDivFactor(void)
+{
+    return 256;
+}
+
+UINT CalcTimeDifference(UINT startTime, UINT endTime)
+{
+	
+    /* timer counts down int ARMulator, 16-bit counter */
+    if (endTime > startTime)
+		return (startTime + 0x00010000 - endTime);
+    else
+		return (startTime - endTime);
+}
+
+#endif