/*
  * 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 */