aac5773f
 hucm
功能基本完成，接口待打磨
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;******************************************************************************
;* SIMD optimized AAC encoder DSP functions
;*
;* Copyright (C) 2016 Rostislav Pehlivanov <atomnuker@gmail.com>
;*
;* 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
;******************************************************************************
%include "libavutil/x86/x86util.asm"
SECTION_RODATA
float_abs_mask: times 4 dd 0x7fffffff
SECTION .text
;*******************************************************************
;void ff_abs_pow34(float *out, const float *in, const int size);
;*******************************************************************
INIT_XMM sse
cglobal abs_pow34, 3, 3, 3, out, in, size
mova m2, [float_abs_mask]
shl sizeq, 2
add inq, sizeq
add outq, sizeq
neg sizeq
.loop:
andps m0, m2, [inq+sizeq]
sqrtps m1, m0
mulps m0, m1
sqrtps m0, m0
mova [outq+sizeq], m0
add sizeq, mmsize
jl .loop
RET
;*******************************************************************
;void ff_aac_quantize_bands(int *out, const float *in, const float *scaled,
; int size, int is_signed, int maxval, const float Q34,
; const float rounding)
;*******************************************************************
INIT_XMM sse2
cglobal aac_quantize_bands, 5, 5, 6, out, in, scaled, size, is_signed, maxval, Q34, rounding
%if UNIX64 == 0
movss m0, Q34m
movss m1, roundingm
cvtsi2ss m3, dword maxvalm
%else
cvtsi2ss m3, maxvald
%endif
shufps m0, m0, 0
shufps m1, m1, 0
shufps m3, m3, 0
shl is_signedd, 31
movd m4, is_signedd
shufps m4, m4, 0
shl sized, 2
add inq, sizeq
add outq, sizeq
add scaledq, sizeq
neg sizeq
.loop:
mulps m2, m0, [scaledq+sizeq]
addps m2, m1
minps m2, m3
andps m5, m4, [inq+sizeq]
orps m2, m5
cvttps2dq m2, m2
mova [outq+sizeq], m2
add sizeq, mmsize
jl .loop
RET
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