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Diffstat (limited to 'libavcodec/aac_defines.h')
| -rw-r--r-- | libavcodec/aac_defines.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/libavcodec/aac_defines.h b/libavcodec/aac_defines.h new file mode 100644 index 0000000..438d78a --- /dev/null +++ b/libavcodec/aac_defines.h @@ -0,0 +1,116 @@ +/* + * 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 */ |
