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;******************************************************************************
;* 32 point SSE-optimized DCT transform
;* Copyright (c) 2010 Vitor Sessak
;*
;* This file is part of Libav.
;*
;* Libav 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.
;*
;* Libav 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 Libav; if not, write to the Free Software
;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;******************************************************************************
%include "x86inc.asm"
SECTION_RODATA 32
align 32
ps_cos_vec: dd 0.500603, 0.505471, 0.515447, 0.531043
dd 0.553104, 0.582935, 0.622504, 0.674808
dd -1.169440, -0.972568, -0.839350, -0.744536
dd -10.190008, -3.407609, -2.057781, -1.484165
dd 0.502419, 0.522499, 0.566944, 0.646822
dd 0.788155, 1.060678, 1.722447, 5.101149
dd 0.509796, 0.601345, 0.899976, 2.562916
dd 1.000000, 1.000000, 1.306563, 0.541196
dd 1.000000, 0.707107, 1.000000, -0.707107
ps_p1p1m1m1: dd 0, 0, 0x80000000, 0x80000000
%macro BUTTERFLY 4
movaps %4, %1
subps %1, %2
addps %2, %4
mulps %1, %3
%endmacro
%macro BUTTERFLY0 5
movaps %4, %1
shufps %1, %1, %5
xorps %4, %2
addps %1, %4
mulps %1, %3
%endmacro
%macro BUTTERFLY2 4
BUTTERFLY0 %1, %2, %3, %4, 0x1b
%endmacro
%macro BUTTERFLY3 4
BUTTERFLY0 %1, %2, %3, %4, 0xb1
%endmacro
INIT_XMM
section .text align=16
; void ff_dct32_float_sse(FFTSample *out, const FFTSample *in)
cglobal dct32_float_sse, 2,3,8, out, in, tmp
; pass 1
movaps m0, [inq+0]
movaps m1, [inq+112]
shufps m1, m1, 0x1b
BUTTERFLY m0, m1, [ps_cos_vec], m3
movaps m7, [inq+64]
movaps m4, [inq+48]
shufps m4, m4, 0x1b
BUTTERFLY m7, m4, [ps_cos_vec+48], m3
; pass 2
movaps m2, [ps_cos_vec+64]
BUTTERFLY m1, m4, m2, m3
movaps [outq+48], m1
movaps [outq+ 0], m4
; pass 1
movaps m1, [inq+16]
movaps m6, [inq+96]
shufps m6, m6, 0x1b
BUTTERFLY m1, m6, [ps_cos_vec+16], m3
movaps m4, [inq+80]
movaps m5, [inq+32]
shufps m5, m5, 0x1b
BUTTERFLY m4, m5, [ps_cos_vec+32], m3
; pass 2
BUTTERFLY m0, m7, m2, m3
movaps m2, [ps_cos_vec+80]
BUTTERFLY m6, m5, m2, m3
BUTTERFLY m1, m4, m2, m3
; pass 3
movaps m2, [ps_cos_vec+96]
shufps m1, m1, 0x1b
BUTTERFLY m0, m1, m2, m3
movaps [outq+112], m0
movaps [outq+ 96], m1
movaps m0, [outq+0]
shufps m5, m5, 0x1b
BUTTERFLY m0, m5, m2, m3
movaps m1, [outq+48]
shufps m6, m6, 0x1b
BUTTERFLY m1, m6, m2, m3
movaps [outq+48], m1
shufps m4, m4, 0x1b
BUTTERFLY m7, m4, m2, m3
; pass 4
movaps m3, [ps_p1p1m1m1+0]
movaps m2, [ps_cos_vec+112]
BUTTERFLY2 m5, m3, m2, m1
BUTTERFLY2 m0, m3, m2, m1
movaps [outq+16], m0
BUTTERFLY2 m6, m3, m2, m1
movaps [outq+32], m6
movaps m0, [outq+48]
BUTTERFLY2 m0, m3, m2, m1
movaps [outq+48], m0
BUTTERFLY2 m4, m3, m2, m1
BUTTERFLY2 m7, m3, m2, m1
movaps m6, [outq+96]
BUTTERFLY2 m6, m3, m2, m1
movaps m0, [outq+112]
BUTTERFLY2 m0, m3, m2, m1
; pass 5
movaps m2, [ps_cos_vec+128]
shufps m3, m3, 0xcc
BUTTERFLY3 m5, m3, m2, m1
movaps [outq+0], m5
movaps m1, [outq+16]
BUTTERFLY3 m1, m3, m2, m5
movaps [outq+16], m1
BUTTERFLY3 m4, m3, m2, m5
movaps [outq+64], m4
BUTTERFLY3 m7, m3, m2, m5
movaps [outq+80], m7
movaps m5, [outq+32]
BUTTERFLY3 m5, m3, m2, m7
movaps [outq+32], m5
movaps m4, [outq+48]
BUTTERFLY3 m4, m3, m2, m7
movaps [outq+48], m4
BUTTERFLY3 m6, m3, m2, m7
movaps [outq+96], m6
BUTTERFLY3 m0, m3, m2, m7
movaps [outq+112], m0
; pass 6, no SIMD...
movss m3, [outq+56]
mov tmpd, [outq+4]
addss m3, [outq+60]
movss m7, [outq+72]
addss m4, m3
movss m2, [outq+52]
addss m2, m3
movss m3, [outq+24]
addss m3, [outq+28]
addss m7, [outq+76]
addss m1, m3
addss m5, m4
movss [outq+ 16], m1
movss m1, [outq+20]
addss m1, m3
movss m3, [outq+40]
movss [outq+ 48], m1
addss m3, [outq+44]
movss m1, [outq+20]
addss m4, m3
addss m3, m2
addss m1, [outq+28]
movss [outq+ 40], m3
addss m2, [outq+36]
movss m3, [outq+8]
movss [outq+ 56], m2
addss m3, [outq+12]
movss [outq+ 8], m5
movss [outq+ 32], m3
movss m2, [outq+52]
movss m3, [outq+80]
movss m5, [outq+120]
movss [outq+ 80], m1
movss [outq+ 24], m4
addss m5, [outq+124]
movss m1, [outq+64]
addss m2, [outq+60]
addss m0, m5
addss m5, [outq+116]
mov [outq+64], tmpd
addss m6, m0
addss m1, m6
mov tmpd, [outq+12]
movss [outq+ 4], m1
movss m1, [outq+88]
mov [outq+ 96], tmpd
addss m1, [outq+92]
movss m4, [outq+104]
mov tmpd, [outq+28]
addss m4, [outq+108]
addss m0, m4
addss m3, m1
addss m1, [outq+84]
addss m4, m5
addss m6, m3
addss m3, m0
addss m0, m7
addss m5, [outq+100]
addss m7, m4
mov [outq+112], tmpd
movss [outq+ 28], m0
movss m0, [outq+36]
movss [outq+ 36], m7
addss m4, m1
movss m7, [outq+116]
addss m0, m2
addss m7, [outq+124]
movss [outq+ 72], m0
movss m0, [outq+44]
movss [outq+ 12], m6
movss [outq+ 20], m3
addss m2, m0
movss [outq+ 44], m4
movss [outq+ 88], m2
addss m0, [outq+60]
mov tmpd, [outq+60]
mov [outq+120], tmpd
movss [outq+104], m0
addss m1, m5
addss m5, [outq+68]
movss [outq+52], m1
movss [outq+60], m5
movss m1, [outq+68]
movss m5, [outq+100]
addss m5, m7
addss m7, [outq+108]
addss m1, m5
movss m2, [outq+84]
addss m2, [outq+92]
addss m5, m2
movss [outq+ 68], m1
addss m2, m7
movss m1, [outq+76]
movss [outq+ 84], m2
movss [outq+ 76], m5
movss m2, [outq+108]
addss m7, m1
addss m2, [outq+124]
addss m1, m2
addss m2, [outq+92]
movss [outq+100], m1
movss [outq+108], m2
movss m2, [outq+92]
movss [outq+ 92], m7
addss m2, [outq+124]
movss [outq+116], m2
RET
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