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+
+/* -----------------------------------------------------------------------------------------------------------
+Software License for The Fraunhofer FDK AAC Codec Library for Android
+
+© Copyright  1995 - 2012 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
+  All rights reserved.
+
+ 1.    INTRODUCTION
+The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
+the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
+This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
+
+AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
+audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
+independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
+of the MPEG specifications.
+
+Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
+may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
+individually for the purpose of encoding or decoding bit streams in products that are compliant with
+the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
+these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
+software may already be covered under those patent licenses when it is used for those licensed purposes only.
+
+Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
+are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
+applications information and documentation.
+
+2.    COPYRIGHT LICENSE
+
+Redistribution and use in source and binary forms, with or without modification, are permitted without
+payment of copyright license fees provided that you satisfy the following conditions:
+
+You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
+your modifications thereto in source code form.
+
+You must retain the complete text of this software license in the documentation and/or other materials
+provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
+You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
+modifications thereto to recipients of copies in binary form.
+
+The name of Fraunhofer may not be used to endorse or promote products derived from this library without
+prior written permission.
+
+You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
+software or your modifications thereto.
+
+Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
+and the date of any change. For modified versions of the FDK AAC Codec, the term
+"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
+"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
+
+3.    NO PATENT LICENSE
+
+NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
+ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
+respect to this software.
+
+You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
+by appropriate patent licenses.
+
+4.    DISCLAIMER
+
+This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
+"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
+of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
+including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
+or business interruption, however caused and on any theory of liability, whether in contract, strict
+liability, or tort (including negligence), arising in any way out of the use of this software, even if
+advised of the possibility of such damage.
+
+5.    CONTACT INFORMATION
+
+Fraunhofer Institute for Integrated Circuits IIS
+Attention: Audio and Multimedia Departments - FDK AAC LL
+Am Wolfsmantel 33
+91058 Erlangen, Germany
+
+www.iis.fraunhofer.de/amm
+amm-info@iis.fraunhofer.de
+----------------------------------------------------------------------------------------------------------- */
+
+/**************************  Fraunhofer IIS FDK SysLib  **********************
+
+   Author(s):   Manuel Jander
+   Description:
+
+******************************************************************************/
+
+#define RESOURCE_scratchBuffer
+#define FUNCTION_FDKprolog
+#define FUNCTION_FDKepilog
+
+#define MIPS_VIRTUAL_START  (0x80000000)
+/* value below is defined in simulator config (MipsMemIntf-{24KE,4KE}.cfg) */
+#define MIPS_SDE_SCRATCHPAD (0x00058000)
+
+//#define MIPS_SRAM_SIZE  (32768)
+#define MIPS_SRAM_SIZE  (4096)
+
+#define MIPS_SCRATCH_SIZE (4096)
+#define DATA_L1_A_SIZE (MIPS_SRAM_SIZE-MIPS_SCRATCH_SIZE)
+
+
+
+
+#ifdef RESOURCE_scratchBuffer
+#define FDK_SCRATCHBUF_SIZE 1024
+static LONG *___scratchBuffer = NULL;
+static LONG *__scratchBuffer = NULL;
+static unsigned char *__pScratchBuffer = NULL;
+#endif
+
+
+#ifdef __linux__
+
+#include <stdio.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+static int fd;
+static inline void * getSram(void)
+{
+  unsigned long *ptr = NULL;
+
+  /* Open driver */
+  fd = open("/dev/sram", 0);
+  if (fd < 0)
+  {
+    printf("Unable to access sram. Fallback to malloc\n");
+    /* Signal "no sram driver at use". */
+    fd = -1;
+    /* Return malloced pointer (fallback) */
+    return malloc(MIPS_SRAM_SIZE);
+  }
+
+  /* Get memory mapped into CPU (virtual) address space */
+  ptr = (unsigned long *)mmap(NULL, MIPS_SRAM_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
+  if(ptr == MAP_FAILED)
+  {
+     printf("Unable to access sram. Fallback to malloc\n");
+     /* Give up on the sram driver */
+     close(fd);
+     /* Signal "no sram driver at use". */
+     fd = -1;
+     /* Return malloced pointer (fallback) */
+     ptr = (unsigned long *)malloc(MIPS_SRAM_SIZE);
+  }
+
+
+  /* Return pointer to sram */
+  return (void*)ptr;
+}
+
+static inline void freeSram(void* ptr)
+{
+  /* Check if sram driver is being used. */
+  if (fd == -1)
+  {
+    free(ptr);
+    return;
+  }
+
+  /* Unmap memory */
+  munmap(ptr, MIPS_SRAM_SIZE);
+  /* Close driver */
+  close(fd);
+
+  return;
+}
+
+#elif defined(__SDE_MIPS__)
+
+#include <stdio.h>
+#include <mips/cpu.h>
+
+static int hasISPRAM, hasDSPRAM;
+
+static inline void * getSram(void)
+{
+  void *addr;
+  unsigned int Config;
+
+  Config = mips_getconfig();
+  hasISPRAM = (Config >> 24) & 1;
+  hasDSPRAM = (Config >> 23) & 1;
+
+  FDKprintf("Config ISP/DSP: %d/%d\n", hasISPRAM, hasDSPRAM);
+
+  if (hasDSPRAM) {
+    long paddr, laddr;
+
+    FDKprintf("wrong\n");
+    paddr = MIPS_SDE_SCRATCHPAD;
+    /* Fixed mapping of kseg0: 0x80000000-0x9fffffff virtual => 0x00000000-0x1fffffff physical */
+    laddr = MIPS_VIRTUAL_START + MIPS_SDE_SCRATCHPAD;
+    addr = (void*)(laddr);
+  } else {
+    FDKprintf("ok\n");
+    addr = malloc(MIPS_SRAM_SIZE);
+    FDKprintf("addr %d\n", (int)addr);
+  }
+  return addr;
+}
+static inline void freeSram(void* ptr)
+{
+  if (!hasDSPRAM) {
+    free(ptr);
+  }
+}
+
+#else
+
+static inline void * getSram(void)
+{
+  return malloc(MIPS_SRAM_SIZE);
+}
+static inline void freeSram(void* ptr)
+{
+  free(ptr);
+}
+
+#endif
+
+
+#ifdef FUNCTION_FDKprolog
+void FDKprolog(void)
+{
+   unsigned char *addr;
+
+#ifdef _MIPS_ARCH_MIPS32R2
+   unsigned status;
+   asm volatile("mfc0 %0, $12, 0;\n" : "=r" (status));
+   status |= (1 << 24);
+   asm volatile("mtc0 %0, $12, 0;\n" :: "r" (status));
+#endif
+
+   addr = (unsigned char*)getSram();
+   if (addr == NULL) {
+     FDKprintfErr("SRAM allocation failed ! This is fatal.\n");
+     exit(-1);
+   } else {
+     FDKprintf("SRAM @ 0x%08x, size = 0x%x\n", (unsigned int) addr, MIPS_SRAM_SIZE);
+   }
+
+
+#ifdef RESOURCE_scratchBuffer
+   ___scratchBuffer = (LONG*)(addr + MIPS_SRAM_SIZE - MIPS_SCRATCH_SIZE);
+#endif
+
+   atexit(FDKepilog);
+
+   FDKprolog_generic();
+}
+#endif
+
+#ifdef FUNCTION_FDKepilog
+void FDKepilog(void)
+{
+
+#ifdef _MIPS_ARCH_MIPS32R2
+   unsigned status;
+   asm volatile("mfc0 %0, $12, 0;\n" : "=r" (status));
+           status &= ~(1 << 24);
+   asm volatile("mtc0 %0, $12, 0;\n" :: "r" (status));
+#endif
+
+   FDKepilog_generic();
+}
+#endif
+
+
+#if !defined(__linux__)
+
+#define FUNCTION_FDKclock
+
+#ifndef MIPS_CPU_CLK
+#define MIPS_CPU_CLK 100000000
+#endif
+
+INT FDKclock(void) {
+  INT clk;
+
+  asm volatile ("mfc0 %0,$9 " : "=r" (clk));
+  return clk;
+}
+
+#endif /* !defined(__linux__) */