1
2 /* -----------------------------------------------------------------------------------------------------------
3 Software License for The Fraunhofer FDK AAC Codec Library for Android
4
5 � Copyright 1995 - 2012 Fraunhofer-Gesellschaft zur F�rderung 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;
getSram(void)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
freeSram(void * ptr)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
getSram(void)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 }
freeSram(void * ptr)209 static inline void freeSram(void* ptr)
210 {
211 if (!hasDSPRAM) {
212 free(ptr);
213 }
214 }
215
216 #else
217
getSram(void)218 static inline void * getSram(void)
219 {
220 return malloc(MIPS_SRAM_SIZE);
221 }
freeSram(void * ptr)222 static inline void freeSram(void* ptr)
223 {
224 free(ptr);
225 }
226
227 #endif
228
229
230 #ifdef FUNCTION_FDKprolog
FDKprolog(void)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
FDKepilog(void)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
FDKclock(void)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__) */
293