1 2/* ----------------------------------------------------------------------------------------------------------- 3Software License for The Fraunhofer FDK AAC Codec Library for Android 4 5� Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur F�rderung der angewandten Forschung e.V. 6 All rights reserved. 7 8 1. INTRODUCTION 9The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements 10the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. 11This FDK AAC Codec software is intended to be used on a wide variety of Android devices. 12 13AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual 14audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by 15independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part 16of the MPEG specifications. 17 18Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) 19may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners 20individually for the purpose of encoding or decoding bit streams in products that are compliant with 21the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license 22these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec 23software may already be covered under those patent licenses when it is used for those licensed purposes only. 24 25Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, 26are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional 27applications information and documentation. 28 292. COPYRIGHT LICENSE 30 31Redistribution and use in source and binary forms, with or without modification, are permitted without 32payment of copyright license fees provided that you satisfy the following conditions: 33 34You must retain the complete text of this software license in redistributions of the FDK AAC Codec or 35your modifications thereto in source code form. 36 37You must retain the complete text of this software license in the documentation and/or other materials 38provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. 39You must make available free of charge copies of the complete source code of the FDK AAC Codec and your 40modifications thereto to recipients of copies in binary form. 41 42The name of Fraunhofer may not be used to endorse or promote products derived from this library without 43prior written permission. 44 45You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec 46software or your modifications thereto. 47 48Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software 49and 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." 52 533. NO PATENT LICENSE 54 55NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, 56ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with 57respect to this software. 58 59You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized 60by appropriate patent licenses. 61 624. DISCLAIMER 63 64This 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 66of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 67CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, 68including but not limited to procurement of substitute goods or services; loss of use, data, or profits, 69or business interruption, however caused and on any theory of liability, whether in contract, strict 70liability, or tort (including negligence), arising in any way out of the use of this software, even if 71advised of the possibility of such damage. 72 735. CONTACT INFORMATION 74 75Fraunhofer Institute for Integrated Circuits IIS 76Attention: Audio and Multimedia Departments - FDK AAC LL 77Am Wolfsmantel 33 7891058 Erlangen, Germany 79 80www.iis.fraunhofer.de/amm 81amm-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 110static LONG *___scratchBuffer = NULL; 111static LONG *__scratchBuffer = NULL; 112static 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 125static int fd; 126static 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 159static 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 181static int hasISPRAM, hasDSPRAM; 182 183static 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} 209static inline void freeSram(void* ptr) 210{ 211 if (!hasDSPRAM) { 212 free(ptr); 213 } 214} 215 216#else 217 218static inline void * getSram(void) 219{ 220 return malloc(MIPS_SRAM_SIZE); 221} 222static inline void freeSram(void* ptr) 223{ 224 free(ptr); 225} 226 227#endif 228 229 230#ifdef FUNCTION_FDKprolog 231void 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 262void 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 285INT FDKclock(void) { 286 INT clk; 287 288 asm volatile ("mfc0 %0,$9 " : "=r" (clk)); 289 return clk; 290} 291 292#endif /* !defined(__linux__) */ 293