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Diffstat (limited to 'libavcodec/aac_defines.h')
-rw-r--r-- | libavcodec/aac_defines.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/libavcodec/aac_defines.h b/libavcodec/aac_defines.h new file mode 100644 index 0000000000..0f3905fe0b --- /dev/null +++ b/libavcodec/aac_defines.h @@ -0,0 +1,78 @@ +/* + * 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 +#define INTFLOAT int +#define SHORTFLOAT int16_t +#define AAC_FLOAT SoftFloat +#define AAC_SIGNE int +#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) << (x)) + 1024 +#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_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 +#define INTFLOAT float +#define SHORTFLOAT float +#define AAC_FLOAT float +#define AAC_SIGNE unsigned +#define FIXR(x) ((float)(x)) +#define FIXR10(x) ((float)(x)) +#define Q23(x) x +#define Q30(x) x +#define Q31(x) x +#define RANGE15(x) (32768.0 * (x)) +#define GET_GAIN(x, y) powf((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_SRA_R(x, y) (x) + +#endif /* USE_FIXED */ + +#endif /* AVCODEC_AAC_DEFINES_H */ |