libfaad2/common.h

   1 /*
   2 ** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
   3 ** Copyright (C) 2003-2004 M. Bakker, Ahead Software AG, http://www.nero.com
   4 **
   5 ** This program is free software; you can redistribute it and/or modify
   6 ** it under the terms of the GNU General Public License as published by
   7 ** the Free Software Foundation; either version 2 of the License, or
   8 ** (at your option) any later version.
   9 **
  10 ** This program is distributed in the hope that it will be useful,
  11 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 ** GNU General Public License for more details.
  14 **
  15 ** You should have received a copy of the GNU General Public License
  16 ** along with this program; if not, write to the Free Software
  17 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18 **
  19 ** Any non-GPL usage of this software or parts of this software is strictly
  20 ** forbidden.
  21 **
  22 ** Commercial non-GPL licensing of this software is possible.
  23 ** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
  24 **
  25 ** Initially modified for use with MPlayer by Arpad Gereöffy on 2003/08/30
  26 ** $Id$
  27 ** detailed changelog at http://svn.mplayerhq.hu/mplayer/trunk/
  28 ** local_changes.diff contains the exact changes to this file.
  29 **/
  30
  31 #ifndef __COMMON_H__
  32 #define __COMMON_H__
  33
  34 #ifdef __cplusplus
  35 extern "C" {
  36 #endif
  37
  38 #ifdef HAVE_CONFIG_H
  39 #  include "../config.h"
  40 #endif
  41
  42 /* Allow build on Cygwin*/
  43 #if defined(__CYGWIN__)
  44 #define __STRICT_ANSI__
  45 #endif
  46
  47 #define INLINE __inline
  48 #if 0 //defined(_WIN32) && !defined(_WIN32_WCE)
  49 #define ALIGN __declspec(align(16))
  50 #else
  51 #define ALIGN
  52 #endif
  53
  54 #ifndef max
  55 #define max(a, b) (((a) > (b)) ? (a) : (b))
  56 #endif
  57 #ifndef min
  58 #define min(a, b) (((a) < (b)) ? (a) : (b))
  59 #endif
  60
  61 /* COMPILE TIME DEFINITIONS */
  62
  63 /* use double precision */
  64 /* #define USE_DOUBLE_PRECISION */
  65 /* use fixed point reals */
  66 //#define FIXED_POINT
  67 //#define BIG_IQ_TABLE
  68
  69 /* Use if target platform has address generators with autoincrement */
  70 //#define PREFER_POINTERS
  71
  72 #if defined(_WIN32_WCE) || defined(__arm__)
  73 #define FIXED_POINT
  74 #endif
  75
  76
  77 #define ERROR_RESILIENCE
  78
  79
  80 /* Allow decoding of MAIN profile AAC */
  81 #define MAIN_DEC
  82 /* Allow decoding of SSR profile AAC */
  83 //#define SSR_DEC
  84 /* Allow decoding of LTP profile AAC */
  85 #define LTP_DEC
  86 /* Allow decoding of LD profile AAC */
  87 #define LD_DEC
  88 /* Allow decoding of scalable profiles */
  89 //#define SCALABLE_DEC
  90 /* Allow decoding of Digital Radio Mondiale (DRM) */
  91 //#define DRM
  92 //#define DRM_PS
  93
  94 /* LD can't do without LTP */
  95 #ifdef LD_DEC
  96 #ifndef ERROR_RESILIENCE
  97 #define ERROR_RESILIENCE
  98 #endif
  99 #ifndef LTP_DEC
 100 #define LTP_DEC
 101 #endif
 102 #endif
 103
 104 #define ALLOW_SMALL_FRAMELENGTH
 105
 106
 107 // Define LC_ONLY_DECODER if you want a pure AAC LC decoder (independant of SBR_DEC and PS_DEC)
 108 //#define LC_ONLY_DECODER
 109 #ifdef LC_ONLY_DECODER
 110   #undef LD_DEC
 111   #undef LTP_DEC
 112   #undef MAIN_DEC
 113   #undef SSR_DEC
 114   #undef DRM
 115   #undef ALLOW_SMALL_FRAMELENGTH
 116   #undef ERROR_RESILIENCE
 117 #endif
 118
 119 #define SBR_DEC
 120 //#define SBR_LOW_POWER
 121 #define PS_DEC
 122
 123 /* FIXED POINT: No MAIN decoding */
 124 #ifdef FIXED_POINT
 125 # ifdef MAIN_DEC
 126 #  undef MAIN_DEC
 127 # endif
 128 # ifdef SBR_DEC
 129 #  undef SBR_DEC
 130 # endif
 131 #endif // FIXED_POINT
 132
 133 #ifdef DRM
 134 # ifndef SCALABLE_DEC
 135 #  define SCALABLE_DEC
 136 # endif
 137 #endif
 138
 139
 140 #ifdef FIXED_POINT
 141 #define DIV_R(A, B) (((int64_t)A << REAL_BITS)/B)
 142 #define DIV_C(A, B) (((int64_t)A << COEF_BITS)/B)
 143 #else
 144 #define DIV_R(A, B) ((A)/(B))
 145 #define DIV_C(A, B) ((A)/(B))
 146 #endif
 147
 148 #ifndef SBR_LOW_POWER
 149 #define qmf_t complex_t
 150 #define QMF_RE(A) RE(A)
 151 #define QMF_IM(A) IM(A)
 152 #else
 153 #define qmf_t real_t
 154 #define QMF_RE(A) (A)
 155 #define QMF_IM(A)
 156 #endif
 157
 158
 159 /* END COMPILE TIME DEFINITIONS */
 160
 161 #if defined(_WIN32) && !defined(__MINGW32__)
 162
 163 #include <stdlib.h>
 164
 165 #if 0
 166 typedef unsigned __int64 uint64_t;
 167 typedef unsigned __int32 uint32_t;
 168 typedef unsigned __int16 uint16_t;
 169 typedef unsigned __int8 uint8_t;
 170 typedef __int64 int64_t;
 171 typedef __int32 int32_t;
 172 typedef __int16 int16_t;
 173 typedef __int8  int8_t;
 174 #else
 175 #include <inttypes.h>
 176 #endif
 177
 178 typedef float float32_t;
 179
 180
 181 #else
 182
 183 #include <stdio.h>
 184 #if HAVE_SYS_TYPES_H
 185 # include <sys/types.h>
 186 #endif
 187 #if HAVE_SYS_STAT_H
 188 # include <sys/stat.h>
 189 #endif
 190 #if STDC_HEADERS
 191 # include <stdlib.h>
 192 # include <stddef.h>
 193 #else
 194 # if HAVE_STDLIB_H
 195 #  include <stdlib.h>
 196 # endif
 197 #endif
 198 #if HAVE_STRING_H
 199 # if !STDC_HEADERS && HAVE_MEMORY_H
 200 #  include <memory.h>
 201 # endif
 202 # include <string.h>
 203 #endif
 204 #if HAVE_STRINGS_H
 205 # include <strings.h>
 206 #endif
 207 #if HAVE_INTTYPES_H
 208 # include <inttypes.h>
 209 #else
 210 # if HAVE_STDINT_H
 211 #  include <stdint.h>
 212 # else
 213 /* we need these... */
 214 typedef unsigned long long uint64_t;
 215 typedef unsigned long uint32_t;
 216 typedef unsigned short uint16_t;
 217 typedef unsigned char uint8_t;
 218 typedef long long int64_t;
 219 typedef long int32_t;
 220 typedef short int16_t;
 221 typedef char int8_t;
 222 # endif
 223 #endif
 224 #if HAVE_UNISTD_H
 225 # include <unistd.h>
 226 #endif
 227
 228 #ifndef HAVE_FLOAT32_T
 229 typedef float float32_t;
 230 #endif
 231
 232 #if STDC_HEADERS
 233 # include <string.h>
 234 #else
 235 # if !HAVE_STRCHR
 236 #  define strchr index
 237 #  define strrchr rindex
 238 # endif
 239 char *strchr(), *strrchr();
 240 # if !HAVE_MEMCPY
 241 #  define memcpy(d, s, n) bcopy((s), (d), (n))
 242 #  define memmove(d, s, n) bcopy((s), (d), (n))
 243 # endif
 244 #endif
 245
 246 #endif
 247
 248 #ifdef WORDS_BIGENDIAN
 249 #define ARCH_IS_BIG_ENDIAN
 250 #endif
 251
 252 /* FIXED_POINT doesn't work with MAIN and SSR yet */
 253 #ifdef FIXED_POINT
 254   #undef MAIN_DEC
 255   #undef SSR_DEC
 256 #endif
 257
 258
 259 #if defined(FIXED_POINT)
 260
 261   #include "fixed.h"
 262
 263 #elif defined(USE_DOUBLE_PRECISION)
 264
 265   typedef double real_t;
 266
 267   #include <math.h>
 268
 269   #define MUL_R(A,B) ((A)*(B))
 270   #define MUL_C(A,B) ((A)*(B))
 271   #define MUL_F(A,B) ((A)*(B))
 272
 273   /* Complex multiplication */
 274   static INLINE void ComplexMult(real_t *y1, real_t *y2,
 275       real_t x1, real_t x2, real_t c1, real_t c2)
 276   {
 277       *y1 = MUL_F(x1, c1) + MUL_F(x2, c2);
 278       *y2 = MUL_F(x2, c1) - MUL_F(x1, c2);
 279   }
 280
 281   #define REAL_CONST(A) ((real_t)(A))
 282   #define COEF_CONST(A) ((real_t)(A))
 283   #define Q2_CONST(A) ((real_t)(A))
 284   #define FRAC_CONST(A) ((real_t)(A)) /* pure fractional part */
 285
 286 #else /* Normal floating point operation */
 287
 288   typedef float real_t;
 289
 290   #define MUL_R(A,B) ((A)*(B))
 291   #define MUL_C(A,B) ((A)*(B))
 292   #define MUL_F(A,B) ((A)*(B))
 293
 294   #define REAL_CONST(A) ((real_t)(A))
 295   #define COEF_CONST(A) ((real_t)(A))
 296   #define Q2_CONST(A) ((real_t)(A))
 297   #define FRAC_CONST(A) ((real_t)(A)) /* pure fractional part */
 298
 299   /* Complex multiplication */
 300   static INLINE void ComplexMult(real_t *y1, real_t *y2,
 301       real_t x1, real_t x2, real_t c1, real_t c2)
 302   {
 303       *y1 = MUL_F(x1, c1) + MUL_F(x2, c2);
 304       *y2 = MUL_F(x2, c1) - MUL_F(x1, c2);
 305   }
 306
 307
 308   #if defined(_WIN32) && !defined(__MINGW32__) && !defined(HAVE_LRINTF)
 309     #define HAS_LRINTF
 310     static INLINE int lrintf(float f)
 311     {
 312         int i;
 313         __asm
 314         {
 315             fld   f
 316             fistp i
 317         }
 318         return i;
 319     }
 320   #elif (defined(__i386__) && defined(__GNUC__)) && !defined(HAVE_LRINTF)
 321     #define HAS_LRINTF
 322     // from http://www.stereopsis.com/FPU.html
 323     static INLINE int lrintf(float f)
 324     {
 325         int i;
 326         __asm__ __volatile__ (
 327             "flds %1        \n\t"
 328             "fistpl %0      \n\t"
 329             : "=m" (i)
 330             : "m" (f));
 331         return i;
 332     }
 333   #endif
 334
 335
 336   #ifdef __ICL /* only Intel C compiler has fmath ??? */
 337
 338     #include <mathf.h>
 339
 340     #define sin sinf
 341     #define cos cosf
 342     #define log logf
 343     #define floor floorf
 344     #define ceil ceilf
 345     #define sqrt sqrtf
 346
 347   #else
 348
 349 #include <math.h>
 350
 351 #ifdef HAVE_LRINTF
 352 #  define HAS_LRINTF
 353 #  define _ISOC9X_SOURCE 1
 354 #  define _ISOC99_SOURCE 1
 355 #  define __USE_ISOC9X   1
 356 #  define __USE_ISOC99   1
 357 #endif
 358
 359 #ifdef HAVE_SINF
 360 #  define sin sinf
 361 #error
 362 #endif
 363 #ifdef HAVE_COSF
 364 #  define cos cosf
 365 #endif
 366 #ifdef HAVE_LOGF
 367 #  define log logf
 368 #endif
 369 #ifdef HAVE_EXPF
 370 #  define exp expf
 371 #endif
 372 #ifdef HAVE_FLOORF
 373 #  define floor floorf
 374 #endif
 375 #ifdef HAVE_CEILF
 376 #  define ceil ceilf
 377 #endif
 378 #ifdef HAVE_SQRTF
 379 #  define sqrt sqrtf
 380 #endif
 381
 382   #endif
 383
 384 #endif
 385
 386 #ifndef HAS_LRINTF
 387 /* standard cast */
 388 #define lrintf(f) ((int32_t)(f))
 389 #endif
 390
 391 typedef real_t complex_t[2];
 392 #define RE(A) A[0]
 393 #define IM(A) A[1]
 394
 395
 396 /* common functions */
 397 uint8_t cpu_has_sse(void);
 398 uint32_t random_int(void);
 399 uint32_t ones32(uint32_t x);
 400 uint32_t floor_log2(uint32_t x);
 401 uint32_t wl_min_lzc(uint32_t x);
 402 #ifdef FIXED_POINT
 403 #define LOG2_MIN_INF REAL_CONST(-10000)
 404 int32_t log2_int(uint32_t val);
 405 int32_t log2_fix(uint32_t val);
 406 int32_t pow2_int(real_t val);
 407 real_t pow2_fix(real_t val);
 408 #endif
 409 uint8_t get_sr_index(const uint32_t samplerate);
 410 uint8_t max_pred_sfb(const uint8_t sr_index);
 411 uint8_t max_tns_sfb(const uint8_t sr_index, const uint8_t object_type,
 412                     const uint8_t is_short);
 413 uint32_t get_sample_rate(const uint8_t sr_index);
 414 int8_t can_decode_ot(const uint8_t object_type);
 415
 416 void *faad_malloc(size_t size);
 417 void faad_free(void *b);
 418
 419 //#define PROFILE
 420 #ifdef PROFILE
 421 static int64_t faad_get_ts()
 422 {
 423     __asm
 424     {
 425         rdtsc
 426     }
 427 }
 428 #endif
 429
 430 #ifndef M_PI
 431 #define M_PI 3.14159265358979323846
 432 #endif
 433 #ifndef M_PI_2 /* PI/2 */
 434 #define M_PI_2 1.57079632679489661923
 435 #endif
 436
 437
 438 #ifdef __cplusplus
 439 }
 440 #endif
 441 #endif