media/libopus/celt/arch.h

   1 /* Copyright (c) 2003-2008 Jean-Marc Valin
   2    Copyright (c) 2007-2008 CSIRO
   3    Copyright (c) 2007-2009 Xiph.Org Foundation
   4    Written by Jean-Marc Valin */
   5 /**
   6    @file arch.h
   7    @brief Various architecture definitions for CELT
   8 */
   9 /*
  10    Redistribution and use in source and binary forms, with or without
  11    modification, are permitted provided that the following conditions
  12    are met:
  13
  14    - Redistributions of source code must retain the above copyright
  15    notice, this list of conditions and the following disclaimer.
  16
  17    - Redistributions in binary form must reproduce the above copyright
  18    notice, this list of conditions and the following disclaimer in the
  19    documentation and/or other materials provided with the distribution.
  20
  21    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  25    OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  26    EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  27    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  28    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  29    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  30    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  31    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32 */
  33
  34 #ifndef ARCH_H
  35 #define ARCH_H
  36
  37 #include "opus_types.h"
  38 #include "opus_defines.h"
  39
  40 # if !defined(__GNUC_PREREQ)
  41 #  if defined(__GNUC__)&&defined(__GNUC_MINOR__)
  42 #   define __GNUC_PREREQ(_maj,_min) \
  43  ((__GNUC__<<16)+__GNUC_MINOR__>=((_maj)<<16)+(_min))
  44 #  else
  45 #   define __GNUC_PREREQ(_maj,_min) 0
  46 #  endif
  47 # endif
  48
  49 #if OPUS_GNUC_PREREQ(3, 0)
  50 #define opus_likely(x)       (__builtin_expect(!!(x), 1))
  51 #define opus_unlikely(x)     (__builtin_expect(!!(x), 0))
  52 #else
  53 #define opus_likely(x)       (!!(x))
  54 #define opus_unlikely(x)     (!!(x))
  55 #endif
  56
  57 #define CELT_SIG_SCALE 32768.f
  58
  59 #define CELT_FATAL(str) celt_fatal(str, __FILE__, __LINE__);
  60
  61 #if defined(ENABLE_ASSERTIONS) || defined(ENABLE_HARDENING)
  62 #ifdef __GNUC__
  63 __attribute__((noreturn))
  64 #endif
  65 void celt_fatal(const char *str, const char *file, int line);
  66
  67 #if defined(CELT_C) && !defined(OVERRIDE_celt_fatal)
  68 #include <stdio.h>
  69 #include <stdlib.h>
  70 #ifdef __GNUC__
  71 __attribute__((noreturn))
  72 #endif
  73 void celt_fatal(const char *str, const char *file, int line)
  74 {
  75    fprintf (stderr, "Fatal (internal) error in %s, line %d: %s\n", file, line, str);
  76 #if defined(_MSC_VER)
  77    _set_abort_behavior( 0, _WRITE_ABORT_MSG);
  78 #endif
  79    abort();
  80 }
  81 #endif
  82
  83 #define celt_assert(cond) {if (!(cond)) {CELT_FATAL("assertion failed: " #cond);}}
  84 #define celt_assert2(cond, message) {if (!(cond)) {CELT_FATAL("assertion failed: " #cond "\n" message);}}
  85 #define MUST_SUCCEED(call) celt_assert((call) == OPUS_OK)
  86 #else
  87 #define celt_assert(cond)
  88 #define celt_assert2(cond, message)
  89 #define MUST_SUCCEED(call) do {if((call) != OPUS_OK) {RESTORE_STACK; return OPUS_INTERNAL_ERROR;} } while (0)
  90 #endif
  91
  92 #if defined(ENABLE_ASSERTIONS)
  93 #define celt_sig_assert(cond) {if (!(cond)) {CELT_FATAL("signal assertion failed: " #cond);}}
  94 #else
  95 #define celt_sig_assert(cond)
  96 #endif
  97
  98 #define IMUL32(a,b) ((a)*(b))
  99
 100 #define MIN16(a,b) ((a) < (b) ? (a) : (b))   /**< Minimum 16-bit value.   */
 101 #define MAX16(a,b) ((a) > (b) ? (a) : (b))   /**< Maximum 16-bit value.   */
 102 #define MIN32(a,b) ((a) < (b) ? (a) : (b))   /**< Minimum 32-bit value.   */
 103 #define MAX32(a,b) ((a) > (b) ? (a) : (b))   /**< Maximum 32-bit value.   */
 104 #define IMIN(a,b) ((a) < (b) ? (a) : (b))   /**< Minimum int value.   */
 105 #define IMAX(a,b) ((a) > (b) ? (a) : (b))   /**< Maximum int value.   */
 106 #define UADD32(a,b) ((a)+(b))
 107 #define USUB32(a,b) ((a)-(b))
 108
 109 /* Set this if opus_int64 is a native type of the CPU. */
 110 /* Assume that all LP64 architectures have fast 64-bit types; also x86_64
 111    (which can be ILP32 for x32) and Win64 (which is LLP64). */
 112 #if defined(__x86_64__) || defined(__LP64__) || defined(_WIN64)
 113 #define OPUS_FAST_INT64 1
 114 #else
 115 #define OPUS_FAST_INT64 0
 116 #endif
 117
 118 #define PRINT_MIPS(file)
 119
 120 #ifdef FIXED_POINT
 121
 122 typedef opus_int16 opus_val16;
 123 typedef opus_int32 opus_val32;
 124 typedef opus_int64 opus_val64;
 125
 126 typedef opus_val32 celt_sig;
 127 typedef opus_val16 celt_norm;
 128 typedef opus_val32 celt_ener;
 129
 130 #define celt_isnan(x) 0
 131
 132 #define Q15ONE 32767
 133
 134 #define SIG_SHIFT 12
 135 /* Safe saturation value for 32-bit signals. Should be less than
 136    2^31*(1-0.85) to avoid blowing up on DC at deemphasis.*/
 137 #define SIG_SAT (300000000)
 138
 139 #define NORM_SCALING 16384
 140
 141 #define DB_SHIFT 10
 142
 143 #define EPSILON 1
 144 #define VERY_SMALL 0
 145 #define VERY_LARGE16 ((opus_val16)32767)
 146 #define Q15_ONE ((opus_val16)32767)
 147
 148 #define SCALEIN(a)      (a)
 149 #define SCALEOUT(a)     (a)
 150
 151 #define ABS16(x) ((x) < 0 ? (-(x)) : (x))
 152 #define ABS32(x) ((x) < 0 ? (-(x)) : (x))
 153
 154 static OPUS_INLINE opus_int16 SAT16(opus_int32 x) {
 155    return x > 32767 ? 32767 : x < -32768 ? -32768 : (opus_int16)x;
 156 }
 157
 158 #ifdef FIXED_DEBUG
 159 #include "fixed_debug.h"
 160 #else
 161
 162 #include "fixed_generic.h"
 163
 164 #ifdef OPUS_ARM_PRESUME_AARCH64_NEON_INTR
 165 #include "arm/fixed_arm64.h"
 166 #elif defined (OPUS_ARM_INLINE_EDSP)
 167 #include "arm/fixed_armv5e.h"
 168 #elif defined (OPUS_ARM_INLINE_ASM)
 169 #include "arm/fixed_armv4.h"
 170 #elif defined (BFIN_ASM)
 171 #include "fixed_bfin.h"
 172 #elif defined (TI_C5X_ASM)
 173 #include "fixed_c5x.h"
 174 #elif defined (TI_C6X_ASM)
 175 #include "fixed_c6x.h"
 176 #endif
 177
 178 #endif
 179
 180 #else /* FIXED_POINT */
 181
 182 typedef float opus_val16;
 183 typedef float opus_val32;
 184 typedef float opus_val64;
 185
 186 typedef float celt_sig;
 187 typedef float celt_norm;
 188 typedef float celt_ener;
 189
 190 #ifdef FLOAT_APPROX
 191 /* This code should reliably detect NaN/inf even when -ffast-math is used.
 192    Assumes IEEE 754 format. */
 193 static OPUS_INLINE int celt_isnan(float x)
 194 {
 195    union {float f; opus_uint32 i;} in;
 196    in.f = x;
 197    return ((in.i>>23)&0xFF)==0xFF && (in.i&0x007FFFFF)!=0;
 198 }
 199 #else
 200 #ifdef __FAST_MATH__
 201 #error Cannot build libopus with -ffast-math unless FLOAT_APPROX is defined. This could result in crashes on extreme (e.g. NaN) input
 202 #endif
 203 #define celt_isnan(x) ((x)!=(x))
 204 #endif
 205
 206 #define Q15ONE 1.0f
 207
 208 #define NORM_SCALING 1.f
 209
 210 #define EPSILON 1e-15f
 211 #define VERY_SMALL 1e-30f
 212 #define VERY_LARGE16 1e15f
 213 #define Q15_ONE ((opus_val16)1.f)
 214
 215 /* This appears to be the same speed as C99's fabsf() but it's more portable. */
 216 #define ABS16(x) ((float)fabs(x))
 217 #define ABS32(x) ((float)fabs(x))
 218
 219 #define QCONST16(x,bits) (x)
 220 #define QCONST32(x,bits) (x)
 221
 222 #define NEG16(x) (-(x))
 223 #define NEG32(x) (-(x))
 224 #define NEG32_ovflw(x) (-(x))
 225 #define EXTRACT16(x) (x)
 226 #define EXTEND32(x) (x)
 227 #define SHR16(a,shift) (a)
 228 #define SHL16(a,shift) (a)
 229 #define SHR32(a,shift) (a)
 230 #define SHL32(a,shift) (a)
 231 #define PSHR32(a,shift) (a)
 232 #define VSHR32(a,shift) (a)
 233
 234 #define PSHR(a,shift)   (a)
 235 #define SHR(a,shift)    (a)
 236 #define SHL(a,shift)    (a)
 237 #define SATURATE(x,a)   (x)
 238 #define SATURATE16(x)   (x)
 239
 240 #define ROUND16(a,shift)  (a)
 241 #define SROUND16(a,shift) (a)
 242 #define HALF16(x)       (.5f*(x))
 243 #define HALF32(x)       (.5f*(x))
 244
 245 #define ADD16(a,b) ((a)+(b))
 246 #define SUB16(a,b) ((a)-(b))
 247 #define ADD32(a,b) ((a)+(b))
 248 #define SUB32(a,b) ((a)-(b))
 249 #define ADD32_ovflw(a,b) ((a)+(b))
 250 #define SUB32_ovflw(a,b) ((a)-(b))
 251 #define MULT16_16_16(a,b)     ((a)*(b))
 252 #define MULT16_16(a,b)     ((opus_val32)(a)*(opus_val32)(b))
 253 #define MAC16_16(c,a,b)     ((c)+(opus_val32)(a)*(opus_val32)(b))
 254
 255 #define MULT16_32_Q15(a,b)     ((a)*(b))
 256 #define MULT16_32_Q16(a,b)     ((a)*(b))
 257
 258 #define MULT32_32_Q31(a,b)     ((a)*(b))
 259
 260 #define MAC16_32_Q15(c,a,b)     ((c)+(a)*(b))
 261 #define MAC16_32_Q16(c,a,b)     ((c)+(a)*(b))
 262
 263 #define MULT16_16_Q11_32(a,b)     ((a)*(b))
 264 #define MULT16_16_Q11(a,b)     ((a)*(b))
 265 #define MULT16_16_Q13(a,b)     ((a)*(b))
 266 #define MULT16_16_Q14(a,b)     ((a)*(b))
 267 #define MULT16_16_Q15(a,b)     ((a)*(b))
 268 #define MULT16_16_P15(a,b)     ((a)*(b))
 269 #define MULT16_16_P13(a,b)     ((a)*(b))
 270 #define MULT16_16_P14(a,b)     ((a)*(b))
 271 #define MULT16_32_P16(a,b)     ((a)*(b))
 272
 273 #define DIV32_16(a,b)     (((opus_val32)(a))/(opus_val16)(b))
 274 #define DIV32(a,b)     (((opus_val32)(a))/(opus_val32)(b))
 275
 276 #define SCALEIN(a)      ((a)*CELT_SIG_SCALE)
 277 #define SCALEOUT(a)     ((a)*(1/CELT_SIG_SCALE))
 278
 279 #define SIG2WORD16(x) (x)
 280
 281 #endif /* !FIXED_POINT */
 282
 283 #ifndef GLOBAL_STACK_SIZE
 284 #ifdef FIXED_POINT
 285 #define GLOBAL_STACK_SIZE 120000
 286 #else
 287 #define GLOBAL_STACK_SIZE 120000
 288 #endif
 289 #endif
 290
 291 #endif /* ARCH_H */