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698a4b22d0
The fixed-point AAC decoder is the only user of the fixed-point sinewin
tables from sinewin; and it only uses a few of them (about 10% when
counting by size). This means that guarding initializing these tables by
an AVOnce (as done in 3719122065) is
unnecessary for them. Furthermore the array of pointers to the
individual arrays is also unneeded.
Therefore this commit moves these tables directly into aacdec_fixed.c;
this is done by ridding the original sinewin.h and sinewin_tablegen.h
headers completely of any fixed-point code at the cost of a bit of
duplicated code (the alternative is an ugly ifdef-mess).
This saves about 58KB from the binary when using hardcoded tables (as
these tables are hardcoded in this scenario); when not using hardcoded
tables, most of these savings only affect the .bss segment, but the rest
(< 1KB) contains relocations (i.e. savings in .data.rel.ro).
Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
119 lines
5.1 KiB
C
119 lines
5.1 KiB
C
/*
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* AAC defines
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_AAC_DEFINES_H
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#define AVCODEC_AAC_DEFINES_H
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#ifndef USE_FIXED
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#define USE_FIXED 0
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#endif
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#if USE_FIXED
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#include "libavutil/softfloat.h"
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#define FFT_FLOAT 0
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#define FFT_FIXED_32 1
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#define AAC_RENAME(x) x ## _fixed
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#define AAC_RENAME_32(x) x ## _fixed_32
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#define AAC_RENAME2(x) x ## _fixed
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typedef int INTFLOAT;
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typedef unsigned UINTFLOAT; ///< Equivalent to INTFLOAT, Used as temporal cast to avoid undefined sign overflow operations.
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typedef int64_t INT64FLOAT;
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typedef int16_t SHORTFLOAT;
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typedef SoftFloat AAC_FLOAT;
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typedef int AAC_SIGNE;
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#define FIXR(a) ((int)((a) * 1 + 0.5))
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#define FIXR10(a) ((int)((a) * 1024.0 + 0.5))
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#define Q23(a) (int)((a) * 8388608.0 + 0.5)
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#define Q30(x) (int)((x)*1073741824.0 + 0.5)
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#define Q31(x) (int)((x)*2147483648.0 + 0.5)
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#define RANGE15(x) x
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#define GET_GAIN(x, y) (-(y) * (1 << (x))) + 1024
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#define AAC_MUL16(x, y) (int)(((int64_t)(x) * (y) + 0x8000) >> 16)
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#define AAC_MUL26(x, y) (int)(((int64_t)(x) * (y) + 0x2000000) >> 26)
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#define AAC_MUL30(x, y) (int)(((int64_t)(x) * (y) + 0x20000000) >> 30)
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#define AAC_MUL31(x, y) (int)(((int64_t)(x) * (y) + 0x40000000) >> 31)
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#define AAC_MADD28(x, y, a, b) (int)((((int64_t)(x) * (y)) + \
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((int64_t)(a) * (b)) + \
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0x8000000) >> 28)
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#define AAC_MADD30(x, y, a, b) (int)((((int64_t)(x) * (y)) + \
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((int64_t)(a) * (b)) + \
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0x20000000) >> 30)
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#define AAC_MADD30_V8(x, y, a, b, c, d, e, f) (int)((((int64_t)(x) * (y)) + \
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((int64_t)(a) * (b)) + \
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((int64_t)(c) * (d)) + \
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((int64_t)(e) * (f)) + \
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0x20000000) >> 30)
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#define AAC_MSUB30(x, y, a, b) (int)((((int64_t)(x) * (y)) - \
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((int64_t)(a) * (b)) + \
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0x20000000) >> 30)
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#define AAC_MSUB30_V8(x, y, a, b, c, d, e, f) (int)((((int64_t)(x) * (y)) + \
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((int64_t)(a) * (b)) - \
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((int64_t)(c) * (d)) - \
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((int64_t)(e) * (f)) + \
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0x20000000) >> 30)
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#define AAC_MSUB31_V3(x, y, z) (int)((((int64_t)(x) * (z)) - \
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((int64_t)(y) * (z)) + \
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0x40000000) >> 31)
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#define AAC_HALF_SUM(x, y) (((x) >> 1) + ((y) >> 1))
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#define AAC_SRA_R(x, y) (int)(((x) + (1 << ((y) - 1))) >> (y))
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#else
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#define FFT_FLOAT 1
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#define FFT_FIXED_32 0
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#define AAC_RENAME(x) x
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#define AAC_RENAME_32(x) x
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#define AAC_RENAME2(x) ff_ ## x
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typedef float INTFLOAT;
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typedef float UINTFLOAT;
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typedef float INT64FLOAT;
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typedef float SHORTFLOAT;
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typedef float AAC_FLOAT;
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typedef unsigned AAC_SIGNE;
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#define FIXR(x) ((float)(x))
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#define FIXR10(x) ((float)(x))
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#define Q23(x) ((float)(x))
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#define Q30(x) ((float)(x))
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#define Q31(x) ((float)(x))
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#define RANGE15(x) (32768.0 * (x))
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#define GET_GAIN(x, y) powf((x), -(y))
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#define AAC_MUL16(x, y) ((x) * (y))
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#define AAC_MUL26(x, y) ((x) * (y))
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#define AAC_MUL30(x, y) ((x) * (y))
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#define AAC_MUL31(x, y) ((x) * (y))
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#define AAC_MADD28(x, y, a, b) ((x) * (y) + (a) * (b))
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#define AAC_MADD30(x, y, a, b) ((x) * (y) + (a) * (b))
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#define AAC_MADD30_V8(x, y, a, b, c, d, e, f) ((x) * (y) + (a) * (b) + \
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(c) * (d) + (e) * (f))
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#define AAC_MSUB30(x, y, a, b) ((x) * (y) - (a) * (b))
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#define AAC_MSUB30_V8(x, y, a, b, c, d, e, f) ((x) * (y) + (a) * (b) - \
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(c) * (d) - (e) * (f))
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#define AAC_MSUB31_V3(x, y, z) ((x) - (y)) * (z)
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#define AAC_HALF_SUM(x, y) ((x) + (y)) * 0.5f
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#define AAC_SRA_R(x, y) (x)
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#endif /* USE_FIXED */
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#endif /* AVCODEC_AAC_DEFINES_H */
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