mirror of
https://github.com/ossrs/srs.git
synced 2025-03-09 15:49:59 +00:00
116 lines
5 KiB
C
116 lines
5 KiB
C
/*
|
|
* 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 */
|