text: /*
   * AAC defines
   *
   * This file is part of FFmpeg.
   *
   * FFmpeg is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * FFmpeg is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with FFmpeg; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
   */
  
  #ifndef AVCODEC_AAC_DEFINES_H
  #define AVCODEC_AAC_DEFINES_H
  
  #ifndef USE_FIXED
  #define USE_FIXED 0
  #endif
  
  #if USE_FIXED
  
  #include "libavutil/softfloat.h"
  
  #define FFT_FLOAT    0
  #define FFT_FIXED_32 1
  
  #define AAC_RENAME(x)       x ## _fixed
  #define AAC_RENAME_32(x)    x ## _fixed_32
  typedef int                 INTFLOAT;
  typedef unsigned            UINTFLOAT;  ///< Equivalent to INTFLOAT, Used as temporal cast to avoid undefined sign overflow operations.
  typedef int64_t             INT64FLOAT;
  typedef int16_t             SHORTFLOAT;
  typedef SoftFloat           AAC_FLOAT;
  typedef int                 AAC_SIGNE;
  #define FIXR(a)             ((int)((a) * 1 + 0.5))
  #define FIXR10(a)           ((int)((a) * 1024.0 + 0.5))
  #define Q23(a)              (int)((a) * 8388608.0 + 0.5)
  #define Q30(x)              (int)((x)*1073741824.0 + 0.5)
  #define Q31(x)              (int)((x)*2147483648.0 + 0.5)
  #define RANGE15(x)          x
  #define GET_GAIN(x, y)      (-(y) * (1 << (x))) + 1024
  #define AAC_MUL16(x, y)     (int)(((int64_t)(x) * (y) + 0x8000) >> 16)
  #define AAC_MUL26(x, y)     (int)(((int64_t)(x) * (y) + 0x2000000) >> 26)
  #define AAC_MUL30(x, y)     (int)(((int64_t)(x) * (y) + 0x20000000) >> 30)
  #define AAC_MUL31(x, y)     (int)(((int64_t)(x) * (y) + 0x40000000) >> 31)
  #define AAC_MADD28(x, y, a, b) (int)((((int64_t)(x) * (y)) + \
                                        ((int64_t)(a) * (b)) + \
                                          0x8000000) >> 28)
  #define AAC_MADD30(x, y, a, b) (int)((((int64_t)(x) * (y)) + \
                                        ((int64_t)(a) * (b)) + \
                                          0x20000000) >> 30)
  #define AAC_MADD30_V8(x, y, a, b, c, d, e, f) (int)((((int64_t)(x) * (y)) + \
                                                       ((int64_t)(a) * (b)) + \
                                                       ((int64_t)(c) * (d)) + \
                                                       ((int64_t)(e) * (f)) + \
                                                         0x20000000) >> 30)
  #define AAC_MSUB30(x, y, a, b) (int)((((int64_t)(x) * (y)) - \
                                        ((int64_t)(a) * (b)) + \
                                          0x20000000) >> 30)
  #define AAC_MSUB30_V8(x, y, a, b, c, d, e, f) (int)((((int64_t)(x) * (y)) + \
                                                       ((int64_t)(a) * (b)) - \
                                                       ((int64_t)(c) * (d)) - \
                                                       ((int64_t)(e) * (f)) + \
                                                         0x20000000) >> 30)
  #define AAC_MSUB31_V3(x, y, z)    (int)((((int64_t)(x) * (z)) - \
                                        ((int64_t)(y) * (z)) + \
                                          0x40000000) >> 31)
  #define AAC_HALF_SUM(x, y)  (((x) >> 1) + ((y) >> 1))
  #define AAC_SRA_R(x, y)     (int)(((x) + (1 << ((y) - 1))) >> (y))
  
  #else
  
  #define FFT_FLOAT    1
  #define FFT_FIXED_32 0
  
  #define AAC_RENAME(x)       x
  #define AAC_RENAME_32(x)    x
  typedef float               INTFLOAT;
  typedef float               UINTFLOAT;
  typedef float               INT64FLOAT;
  typedef float               SHORTFLOAT;
  typedef float               AAC_FLOAT;
  typedef unsigned            AAC_SIGNE;
  #define FIXR(x)             ((float)(x))
  #define FIXR10(x)           ((float)(x))
  #define Q23(x)              ((float)(x))
  #define Q30(x)              ((float)(x))
  #define Q31(x)              ((float)(x))
  #define RANGE15(x)          (32768.0 * (x))
  #define GET_GAIN(x, y)      powf((x), -(y))
  #define AAC_MUL16(x, y)     ((x) * (y))
  #define AAC_MUL26(x, y)     ((x) * (y))
  #define AAC_MUL30(x, y)     ((x) * (y))
  #define AAC_MUL31(x, y)     ((x) * (y))
  #define AAC_MADD28(x, y, a, b) ((x) * (y) + (a) * (b))
  #define AAC_MADD30(x, y, a, b) ((x) * (y) + (a) * (b))
  #define AAC_MADD30_V8(x, y, a, b, c, d, e, f) ((x) * (y) + (a) * (b) + \
                                                 (c) * (d) + (e) * (f))
  #define AAC_MSUB30(x, y, a, b) ((x) * (y) - (a) * (b))
  #define AAC_MSUB30_V8(x, y, a, b, c, d, e, f) ((x) * (y) + (a) * (b) - \
                                                 (c) * (d) - (e) * (f))
  #define AAC_MSUB31_V3(x, y, z)    ((x) - (y)) * (z)
  #define AAC_HALF_SUM(x, y)  ((x) + (y)) * 0.5f
  #define AAC_SRA_R(x, y)     (x)
  
  #endif /* USE_FIXED */
  
  #endif /* AVCODEC_AAC_DEFINES_H */
  