blob: c12dc2fab783b36fb163315c6b277009fd2d1514
| 1 | /* |
| 2 | * AAC defines |
| 3 | * |
| 4 | * This file is part of FFmpeg. |
| 5 | * |
| 6 | * FFmpeg is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * FFmpeg is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with FFmpeg; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | #ifndef AVCODEC_AAC_DEFINES_H |
| 22 | #define AVCODEC_AAC_DEFINES_H |
| 23 | |
| 24 | #ifndef USE_FIXED |
| 25 | #define USE_FIXED 0 |
| 26 | #endif |
| 27 | |
| 28 | #if USE_FIXED |
| 29 | |
| 30 | #include "libavutil/softfloat.h" |
| 31 | |
| 32 | #define FFT_FLOAT 0 |
| 33 | #define FFT_FIXED_32 1 |
| 34 | |
| 35 | #define AAC_RENAME(x) x ## _fixed |
| 36 | #define AAC_RENAME_32(x) x ## _fixed_32 |
| 37 | typedef int INTFLOAT; |
| 38 | typedef int64_t INT64FLOAT; |
| 39 | typedef int16_t SHORTFLOAT; |
| 40 | typedef SoftFloat AAC_FLOAT; |
| 41 | typedef int AAC_SIGNE; |
| 42 | #define FIXR(a) ((int)((a) * 1 + 0.5)) |
| 43 | #define FIXR10(a) ((int)((a) * 1024.0 + 0.5)) |
| 44 | #define Q23(a) (int)((a) * 8388608.0 + 0.5) |
| 45 | #define Q30(x) (int)((x)*1073741824.0 + 0.5) |
| 46 | #define Q31(x) (int)((x)*2147483648.0 + 0.5) |
| 47 | #define RANGE15(x) x |
| 48 | #define GET_GAIN(x, y) (-(y) << (x)) + 1024 |
| 49 | #define AAC_MUL16(x, y) (int)(((int64_t)(x) * (y) + 0x8000) >> 16) |
| 50 | #define AAC_MUL26(x, y) (int)(((int64_t)(x) * (y) + 0x2000000) >> 26) |
| 51 | #define AAC_MUL30(x, y) (int)(((int64_t)(x) * (y) + 0x20000000) >> 30) |
| 52 | #define AAC_MUL31(x, y) (int)(((int64_t)(x) * (y) + 0x40000000) >> 31) |
| 53 | #define AAC_MADD28(x, y, a, b) (int)((((int64_t)(x) * (y)) + \ |
| 54 | ((int64_t)(a) * (b)) + \ |
| 55 | 0x8000000) >> 28) |
| 56 | #define AAC_MADD30(x, y, a, b) (int)((((int64_t)(x) * (y)) + \ |
| 57 | ((int64_t)(a) * (b)) + \ |
| 58 | 0x20000000) >> 30) |
| 59 | #define AAC_MADD30_V8(x, y, a, b, c, d, e, f) (int)((((int64_t)(x) * (y)) + \ |
| 60 | ((int64_t)(a) * (b)) + \ |
| 61 | ((int64_t)(c) * (d)) + \ |
| 62 | ((int64_t)(e) * (f)) + \ |
| 63 | 0x20000000) >> 30) |
| 64 | #define AAC_MSUB30(x, y, a, b) (int)((((int64_t)(x) * (y)) - \ |
| 65 | ((int64_t)(a) * (b)) + \ |
| 66 | 0x20000000) >> 30) |
| 67 | #define AAC_MSUB30_V8(x, y, a, b, c, d, e, f) (int)((((int64_t)(x) * (y)) + \ |
| 68 | ((int64_t)(a) * (b)) - \ |
| 69 | ((int64_t)(c) * (d)) - \ |
| 70 | ((int64_t)(e) * (f)) + \ |
| 71 | 0x20000000) >> 30) |
| 72 | #define AAC_MSUB31_V3(x, y, z) (int)((((int64_t)(x) * (z)) - \ |
| 73 | ((int64_t)(y) * (z)) + \ |
| 74 | 0x40000000) >> 31) |
| 75 | #define AAC_HALF_SUM(x, y) (x) >> 1 + (y) >> 1 |
| 76 | #define AAC_SRA_R(x, y) (int)(((x) + (1 << ((y) - 1))) >> (y)) |
| 77 | |
| 78 | #else |
| 79 | |
| 80 | #define FFT_FLOAT 1 |
| 81 | #define FFT_FIXED_32 0 |
| 82 | |
| 83 | #define AAC_RENAME(x) x |
| 84 | #define AAC_RENAME_32(x) x |
| 85 | typedef float INTFLOAT; |
| 86 | typedef float INT64FLOAT; |
| 87 | typedef float SHORTFLOAT; |
| 88 | typedef float AAC_FLOAT; |
| 89 | typedef unsigned AAC_SIGNE; |
| 90 | #define FIXR(x) ((float)(x)) |
| 91 | #define FIXR10(x) ((float)(x)) |
| 92 | #define Q23(x) ((float)(x)) |
| 93 | #define Q30(x) ((float)(x)) |
| 94 | #define Q31(x) ((float)(x)) |
| 95 | #define RANGE15(x) (32768.0 * (x)) |
| 96 | #define GET_GAIN(x, y) powf((x), -(y)) |
| 97 | #define AAC_MUL16(x, y) ((x) * (y)) |
| 98 | #define AAC_MUL26(x, y) ((x) * (y)) |
| 99 | #define AAC_MUL30(x, y) ((x) * (y)) |
| 100 | #define AAC_MUL31(x, y) ((x) * (y)) |
| 101 | #define AAC_MADD28(x, y, a, b) ((x) * (y) + (a) * (b)) |
| 102 | #define AAC_MADD30(x, y, a, b) ((x) * (y) + (a) * (b)) |
| 103 | #define AAC_MADD30_V8(x, y, a, b, c, d, e, f) ((x) * (y) + (a) * (b) + \ |
| 104 | (c) * (d) + (e) * (f)) |
| 105 | #define AAC_MSUB30(x, y, a, b) ((x) * (y) - (a) * (b)) |
| 106 | #define AAC_MSUB30_V8(x, y, a, b, c, d, e, f) ((x) * (y) + (a) * (b) - \ |
| 107 | (c) * (d) - (e) * (f)) |
| 108 | #define AAC_MSUB31_V3(x, y, z) ((x) - (y)) * (z) |
| 109 | #define AAC_HALF_SUM(x, y) ((x) + (y)) * 0.5f |
| 110 | #define AAC_SRA_R(x, y) (x) |
| 111 | |
| 112 | #endif /* USE_FIXED */ |
| 113 | |
| 114 | #endif /* AVCODEC_AAC_DEFINES_H */ |
| 115 |