libSYS/src/mips/genericStds_mips.cpp

   1
   2 /* -----------------------------------------------------------------------------------------------------------
   3 Software License for The Fraunhofer FDK AAC Codec Library for Android
   4
   5 © Copyright  1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
   6   All rights reserved.
   7
   8  1.    INTRODUCTION
   9 The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
  10 the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
  11 This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
  12
  13 AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
  14 audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
  15 independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
  16 of the MPEG specifications.
  17
  18 Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
  19 may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
  20 individually for the purpose of encoding or decoding bit streams in products that are compliant with
  21 the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
  22 these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
  23 software may already be covered under those patent licenses when it is used for those licensed purposes only.
  24
  25 Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
  26 are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
  27 applications information and documentation.
  28
  29 2.    COPYRIGHT LICENSE
  30
  31 Redistribution and use in source and binary forms, with or without modification, are permitted without
  32 payment of copyright license fees provided that you satisfy the following conditions:
  33
  34 You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
  35 your modifications thereto in source code form.
  36
  37 You must retain the complete text of this software license in the documentation and/or other materials
  38 provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
  39 You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
  40 modifications thereto to recipients of copies in binary form.
  41
  42 The name of Fraunhofer may not be used to endorse or promote products derived from this library without
  43 prior written permission.
  44
  45 You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
  46 software or your modifications thereto.
  47
  48 Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
  49 and the date of any change. For modified versions of the FDK AAC Codec, the term
  50 "Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
  51 "Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
  52
  53 3.    NO PATENT LICENSE
  54
  55 NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
  56 ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
  57 respect to this software.
  58
  59 You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
  60 by appropriate patent licenses.
  61
  62 4.    DISCLAIMER
  63
  64 This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
  65 "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
  66 of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
  67 CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
  68 including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
  69 or business interruption, however caused and on any theory of liability, whether in contract, strict
  70 liability, or tort (including negligence), arising in any way out of the use of this software, even if
  71 advised of the possibility of such damage.
  72
  73 5.    CONTACT INFORMATION
  74
  75 Fraunhofer Institute for Integrated Circuits IIS
  76 Attention: Audio and Multimedia Departments - FDK AAC LL
  77 Am Wolfsmantel 33
  78 91058 Erlangen, Germany
  79
  80 www.iis.fraunhofer.de/amm
  81 amm-info@iis.fraunhofer.de
  82 ----------------------------------------------------------------------------------------------------------- */
  83
  84 /**************************  Fraunhofer IIS FDK SysLib  **********************
  85
  86    Author(s):   Manuel Jander
  87    Description:
  88
  89 ******************************************************************************/
  90
  91 #define RESOURCE_scratchBuffer
  92 #define FUNCTION_FDKprolog
  93 #define FUNCTION_FDKepilog
  94
  95 #define MIPS_VIRTUAL_START  (0x80000000)
  96 /* value below is defined in simulator config (MipsMemIntf-{24KE,4KE}.cfg) */
  97 #define MIPS_SDE_SCRATCHPAD (0x00058000)
  98
  99 //#define MIPS_SRAM_SIZE  (32768)
 100 #define MIPS_SRAM_SIZE  (4096)
 101
 102 #define MIPS_SCRATCH_SIZE (4096)
 103 #define DATA_L1_A_SIZE (MIPS_SRAM_SIZE-MIPS_SCRATCH_SIZE)
 104
 105
 106
 107
 108 #ifdef RESOURCE_scratchBuffer
 109 #define FDK_SCRATCHBUF_SIZE 1024
 110 static LONG *___scratchBuffer = NULL;
 111 static LONG *__scratchBuffer = NULL;
 112 static unsigned char *__pScratchBuffer = NULL;
 113 #endif
 114
 115
 116 #ifdef __linux__
 117
 118 #include <stdio.h>
 119 #include <sys/mman.h>
 120 #include <sys/types.h>
 121 #include <sys/stat.h>
 122 #include <fcntl.h>
 123 #include <unistd.h>
 124
 125 static int fd;
 126 static inline void * getSram(void)
 127 {
 128   unsigned long *ptr = NULL;
 129
 130   /* Open driver */
 131   fd = open("/dev/sram", 0);
 132   if (fd < 0)
 133   {
 134     printf("Unable to access sram. Fallback to malloc\n");
 135     /* Signal "no sram driver at use". */
 136     fd = -1;
 137     /* Return malloced pointer (fallback) */
 138     return malloc(MIPS_SRAM_SIZE);
 139   }
 140
 141   /* Get memory mapped into CPU (virtual) address space */
 142   ptr = (unsigned long *)mmap(NULL, MIPS_SRAM_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
 143   if(ptr == MAP_FAILED)
 144   {
 145      printf("Unable to access sram. Fallback to malloc\n");
 146      /* Give up on the sram driver */
 147      close(fd);
 148      /* Signal "no sram driver at use". */
 149      fd = -1;
 150      /* Return malloced pointer (fallback) */
 151      ptr = (unsigned long *)malloc(MIPS_SRAM_SIZE);
 152   }
 153
 154
 155   /* Return pointer to sram */
 156   return (void*)ptr;
 157 }
 158
 159 static inline void freeSram(void* ptr)
 160 {
 161   /* Check if sram driver is being used. */
 162   if (fd == -1)
 163   {
 164     free(ptr);
 165     return;
 166   }
 167
 168   /* Unmap memory */
 169   munmap(ptr, MIPS_SRAM_SIZE);
 170   /* Close driver */
 171   close(fd);
 172
 173   return;
 174 }
 175
 176 #elif defined(__SDE_MIPS__)
 177
 178 #include <stdio.h>
 179 #include <mips/cpu.h>
 180
 181 static int hasISPRAM, hasDSPRAM;
 182
 183 static inline void * getSram(void)
 184 {
 185   void *addr;
 186   unsigned int Config;
 187
 188   Config = mips_getconfig();
 189   hasISPRAM = (Config >> 24) & 1;
 190   hasDSPRAM = (Config >> 23) & 1;
 191
 192   FDKprintf("Config ISP/DSP: %d/%d\n", hasISPRAM, hasDSPRAM);
 193
 194   if (hasDSPRAM) {
 195     long paddr, laddr;
 196
 197     FDKprintf("wrong\n");
 198     paddr = MIPS_SDE_SCRATCHPAD;
 199     /* Fixed mapping of kseg0: 0x80000000-0x9fffffff virtual => 0x00000000-0x1fffffff physical */
 200     laddr = MIPS_VIRTUAL_START + MIPS_SDE_SCRATCHPAD;
 201     addr = (void*)(laddr);
 202   } else {
 203     FDKprintf("ok\n");
 204     addr = malloc(MIPS_SRAM_SIZE);
 205     FDKprintf("addr %d\n", (int)addr);
 206   }
 207   return addr;
 208 }
 209 static inline void freeSram(void* ptr)
 210 {
 211   if (!hasDSPRAM) {
 212     free(ptr);
 213   }
 214 }
 215
 216 #else
 217
 218 static inline void * getSram(void)
 219 {
 220   return malloc(MIPS_SRAM_SIZE);
 221 }
 222 static inline void freeSram(void* ptr)
 223 {
 224   free(ptr);
 225 }
 226
 227 #endif
 228
 229
 230 #ifdef FUNCTION_FDKprolog
 231 void FDKprolog(void)
 232 {
 233    unsigned char *addr;
 234
 235 #ifdef _MIPS_ARCH_MIPS32R2
 236    unsigned status;
 237    asm volatile("mfc0 %0, $12, 0;\n" : "=r" (status));
 238    status |= (1 << 24);
 239    asm volatile("mtc0 %0, $12, 0;\n" :: "r" (status));
 240 #endif
 241
 242    addr = (unsigned char*)getSram();
 243    if (addr == NULL) {
 244      FDKprintfErr("SRAM allocation failed ! This is fatal.\n");
 245      exit(-1);
 246    } else {
 247      FDKprintf("SRAM @ 0x%08x, size = 0x%x\n", (unsigned int) addr, MIPS_SRAM_SIZE);
 248    }
 249
 250
 251 #ifdef RESOURCE_scratchBuffer
 252    ___scratchBuffer = (LONG*)(addr + MIPS_SRAM_SIZE - MIPS_SCRATCH_SIZE);
 253 #endif
 254
 255    atexit(FDKepilog);
 256
 257    FDKprolog_generic();
 258 }
 259 #endif
 260
 261 #ifdef FUNCTION_FDKepilog
 262 void FDKepilog(void)
 263 {
 264
 265 #ifdef _MIPS_ARCH_MIPS32R2
 266    unsigned status;
 267    asm volatile("mfc0 %0, $12, 0;\n" : "=r" (status));
 268            status &= ~(1 << 24);
 269    asm volatile("mtc0 %0, $12, 0;\n" :: "r" (status));
 270 #endif
 271
 272    FDKepilog_generic();
 273 }
 274 #endif
 275
 276
 277 #if !defined(__linux__)
 278
 279 #define FUNCTION_FDKclock
 280
 281 #ifndef MIPS_CPU_CLK
 282 #define MIPS_CPU_CLK 100000000
 283 #endif
 284
 285 INT FDKclock(void) {
 286   INT clk;
 287
 288   asm volatile ("mfc0 %0,$9 " : "=r" (clk));
 289   return clk;
 290 }
 291
 292 #endif /* !defined(__linux__) */