mirror of https://git.ffmpeg.org/ffmpeg.git
851 lines
20 KiB
NASM
851 lines
20 KiB
NASM
;******************************************************************************
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;* FFT transform with SSE/3DNow optimizations
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;* Copyright (c) 2008 Loren Merritt
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;* Copyright (c) 2011 Vitor Sessak
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;*
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;* This algorithm (though not any of the implementation details) is
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;* based on libdjbfft by D. J. Bernstein.
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;*
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;* This file is part of Libav.
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;*
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;* Libav 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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;* Libav 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 Libav; 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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; These functions are not individually interchangeable with the C versions.
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; While C takes arrays of FFTComplex, SSE/3DNow leave intermediate results
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; in blocks as conventient to the vector size.
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; i.e. {4x real, 4x imaginary, 4x real, ...} (or 2x respectively)
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%include "x86inc.asm"
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%ifdef ARCH_X86_64
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%define pointer resq
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%else
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%define pointer resd
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%endif
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struc FFTContext
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.nbits: resd 1
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.reverse: resd 1
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.revtab: pointer 1
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.tmpbuf: pointer 1
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.mdctsize: resd 1
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.mdctbits: resd 1
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.tcos: pointer 1
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.tsin: pointer 1
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endstruc
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SECTION_RODATA
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%define M_SQRT1_2 0.70710678118654752440
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%define M_COS_PI_1_8 0.923879532511287
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%define M_COS_PI_3_8 0.38268343236509
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align 32
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ps_cos16_1: dd 1.0, M_COS_PI_1_8, M_SQRT1_2, M_COS_PI_3_8, 1.0, M_COS_PI_1_8, M_SQRT1_2, M_COS_PI_3_8
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ps_cos16_2: dd 0, M_COS_PI_3_8, M_SQRT1_2, M_COS_PI_1_8, 0, -M_COS_PI_3_8, -M_SQRT1_2, -M_COS_PI_1_8
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ps_root2: times 8 dd M_SQRT1_2
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ps_root2mppm: dd -M_SQRT1_2, M_SQRT1_2, M_SQRT1_2, -M_SQRT1_2, -M_SQRT1_2, M_SQRT1_2, M_SQRT1_2, -M_SQRT1_2
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ps_p1p1m1p1: dd 0, 0, 1<<31, 0, 0, 0, 1<<31, 0
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perm1: dd 0x00, 0x02, 0x03, 0x01, 0x03, 0x00, 0x02, 0x01
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perm2: dd 0x00, 0x01, 0x02, 0x03, 0x01, 0x00, 0x02, 0x03
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ps_p1p1m1p1root2: dd 1.0, 1.0, -1.0, 1.0, M_SQRT1_2, M_SQRT1_2, M_SQRT1_2, M_SQRT1_2
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ps_m1m1p1m1p1m1m1m1: dd 1<<31, 1<<31, 0, 1<<31, 0, 1<<31, 1<<31, 1<<31
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ps_m1p1: dd 1<<31, 0
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%assign i 16
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%rep 13
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cextern cos_ %+ i
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%assign i i<<1
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%endrep
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%ifdef ARCH_X86_64
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%define pointer dq
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%else
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%define pointer dd
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%endif
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%macro IF0 1+
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%endmacro
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%macro IF1 1+
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%1
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%endmacro
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SECTION_TEXT
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%macro T2_3DN 4 ; z0, z1, mem0, mem1
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mova %1, %3
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mova %2, %1
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pfadd %1, %4
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pfsub %2, %4
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%endmacro
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%macro T4_3DN 6 ; z0, z1, z2, z3, tmp0, tmp1
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mova %5, %3
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pfsub %3, %4
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pfadd %5, %4 ; {t6,t5}
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pxor %3, [ps_m1p1] ; {t8,t7}
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mova %6, %1
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pswapd %3, %3
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pfadd %1, %5 ; {r0,i0}
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pfsub %6, %5 ; {r2,i2}
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mova %4, %2
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pfadd %2, %3 ; {r1,i1}
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pfsub %4, %3 ; {r3,i3}
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SWAP %3, %6
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%endmacro
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; in: %1 = {r0,i0,r2,i2,r4,i4,r6,i6}
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; %2 = {r1,i1,r3,i3,r5,i5,r7,i7}
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; %3, %4, %5 tmp
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; out: %1 = {r0,r1,r2,r3,i0,i1,i2,i3}
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; %2 = {r4,r5,r6,r7,i4,i5,i6,i7}
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%macro T8_AVX 5
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vsubps %5, %1, %2 ; v = %1 - %2
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vaddps %3, %1, %2 ; w = %1 + %2
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vmulps %2, %5, [ps_p1p1m1p1root2] ; v *= vals1
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vpermilps %2, %2, [perm1]
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vblendps %1, %2, %3, 0x33 ; q = {w1,w2,v4,v2,w5,w6,v7,v6}
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vshufps %5, %3, %2, 0x4e ; r = {w3,w4,v1,v3,w7,w8,v8,v5}
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vsubps %4, %5, %1 ; s = r - q
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vaddps %1, %5, %1 ; u = r + q
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vpermilps %1, %1, [perm2] ; k = {u1,u2,u3,u4,u6,u5,u7,u8}
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vshufps %5, %4, %1, 0xbb
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vshufps %3, %4, %1, 0xee
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vperm2f128 %3, %3, %5, 0x13
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vxorps %4, %4, [ps_m1m1p1m1p1m1m1m1] ; s *= {1,1,-1,-1,1,-1,-1,-1}
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vshufps %2, %1, %4, 0xdd
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vshufps %1, %1, %4, 0x88
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vperm2f128 %4, %2, %1, 0x02 ; v = {k1,k3,s1,s3,k2,k4,s2,s4}
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vperm2f128 %1, %1, %2, 0x13 ; w = {k6,k8,s6,s8,k5,k7,s5,s7}
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vsubps %5, %1, %3
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vblendps %1, %5, %1, 0x55 ; w -= {0,s7,0,k7,0,s8,0,k8}
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vsubps %2, %4, %1 ; %2 = v - w
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vaddps %1, %4, %1 ; %1 = v + w
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%endmacro
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; In SSE mode do one fft4 transforms
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; in: %1={r0,i0,r2,i2} %2={r1,i1,r3,i3}
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; out: %1={r0,r1,r2,r3} %2={i0,i1,i2,i3}
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;
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; In AVX mode do two fft4 transforms
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; in: %1={r0,i0,r2,i2,r4,i4,r6,i6} %2={r1,i1,r3,i3,r5,i5,r7,i7}
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; out: %1={r0,r1,r2,r3,r4,r5,r6,r7} %2={i0,i1,i2,i3,i4,i5,i6,i7}
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%macro T4_SSE 3
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subps %3, %1, %2 ; {t3,t4,-t8,t7}
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addps %1, %1, %2 ; {t1,t2,t6,t5}
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xorps %3, %3, [ps_p1p1m1p1]
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shufps %2, %1, %3, 0xbe ; {t6,t5,t7,t8}
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shufps %1, %1, %3, 0x44 ; {t1,t2,t3,t4}
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subps %3, %1, %2 ; {r2,i2,r3,i3}
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addps %1, %1, %2 ; {r0,i0,r1,i1}
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shufps %2, %1, %3, 0xdd ; {i0,i1,i2,i3}
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shufps %1, %1, %3, 0x88 ; {r0,r1,r2,r3}
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%endmacro
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; In SSE mode do one FFT8
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; in: %1={r0,r1,r2,r3} %2={i0,i1,i2,i3} %3={r4,i4,r6,i6} %4={r5,i5,r7,i7}
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; out: %1={r0,r1,r2,r3} %2={i0,i1,i2,i3} %1={r4,r5,r6,r7} %2={i4,i5,i6,i7}
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;
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; In AVX mode do two FFT8
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; in: %1={r0,i0,r2,i2,r8, i8, r10,i10} %2={r1,i1,r3,i3,r9, i9, r11,i11}
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; %3={r4,i4,r6,i6,r12,i12,r14,i14} %4={r5,i5,r7,i7,r13,i13,r15,i15}
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; out: %1={r0,r1,r2,r3,r8, r9, r10,r11} %2={i0,i1,i2,i3,i8, i9, i10,i11}
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; %3={r4,r5,r6,r7,r12,r13,r14,r15} %4={i4,i5,i6,i7,i12,i13,i14,i15}
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%macro T8_SSE 6
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addps %6, %3, %4 ; {t1,t2,t3,t4}
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subps %3, %3, %4 ; {r5,i5,r7,i7}
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shufps %4, %3, %3, 0xb1 ; {i5,r5,i7,r7}
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mulps %3, %3, [ps_root2mppm] ; {-r5,i5,r7,-i7}
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mulps %4, %4, [ps_root2]
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addps %3, %3, %4 ; {t8,t7,ta,t9}
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shufps %4, %6, %3, 0x9c ; {t1,t4,t7,ta}
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shufps %6, %6, %3, 0x36 ; {t3,t2,t9,t8}
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subps %3, %6, %4 ; {t6,t5,tc,tb}
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addps %6, %6, %4 ; {t1,t2,t9,ta}
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shufps %5, %6, %3, 0x8d ; {t2,ta,t6,tc}
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shufps %6, %6, %3, 0xd8 ; {t1,t9,t5,tb}
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subps %3, %1, %6 ; {r4,r5,r6,r7}
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addps %1, %1, %6 ; {r0,r1,r2,r3}
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subps %4, %2, %5 ; {i4,i5,i6,i7}
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addps %2, %2, %5 ; {i0,i1,i2,i3}
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%endmacro
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; scheduled for cpu-bound sizes
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%macro PASS_SMALL 3 ; (to load m4-m7), wre, wim
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IF%1 mova m4, Z(4)
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IF%1 mova m5, Z(5)
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mova m0, %2 ; wre
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mova m1, %3 ; wim
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mulps m2, m4, m0 ; r2*wre
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IF%1 mova m6, Z2(6)
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mulps m3, m5, m1 ; i2*wim
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IF%1 mova m7, Z2(7)
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mulps m4, m4, m1 ; r2*wim
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mulps m5, m5, m0 ; i2*wre
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addps m2, m2, m3 ; r2*wre + i2*wim
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mulps m3, m1, m7 ; i3*wim
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subps m5, m5, m4 ; i2*wre - r2*wim
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mulps m1, m1, m6 ; r3*wim
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mulps m4, m0, m6 ; r3*wre
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mulps m0, m0, m7 ; i3*wre
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subps m4, m4, m3 ; r3*wre - i3*wim
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mova m3, Z(0)
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addps m0, m0, m1 ; i3*wre + r3*wim
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subps m1, m4, m2 ; t3
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addps m4, m4, m2 ; t5
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subps m3, m3, m4 ; r2
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addps m4, m4, Z(0) ; r0
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mova m6, Z(2)
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mova Z(4), m3
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mova Z(0), m4
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subps m3, m5, m0 ; t4
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subps m4, m6, m3 ; r3
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addps m3, m3, m6 ; r1
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mova Z2(6), m4
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mova Z(2), m3
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mova m2, Z(3)
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addps m3, m5, m0 ; t6
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subps m2, m2, m1 ; i3
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mova m7, Z(1)
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addps m1, m1, Z(3) ; i1
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mova Z2(7), m2
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mova Z(3), m1
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subps m4, m7, m3 ; i2
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addps m3, m3, m7 ; i0
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mova Z(5), m4
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mova Z(1), m3
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%endmacro
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; scheduled to avoid store->load aliasing
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%macro PASS_BIG 1 ; (!interleave)
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mova m4, Z(4) ; r2
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mova m5, Z(5) ; i2
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mova m0, [wq] ; wre
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mova m1, [wq+o1q] ; wim
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mulps m2, m4, m0 ; r2*wre
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mova m6, Z2(6) ; r3
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mulps m3, m5, m1 ; i2*wim
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mova m7, Z2(7) ; i3
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mulps m4, m4, m1 ; r2*wim
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mulps m5, m5, m0 ; i2*wre
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addps m2, m2, m3 ; r2*wre + i2*wim
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mulps m3, m1, m7 ; i3*wim
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mulps m1, m1, m6 ; r3*wim
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subps m5, m5, m4 ; i2*wre - r2*wim
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mulps m4, m0, m6 ; r3*wre
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mulps m0, m0, m7 ; i3*wre
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subps m4, m4, m3 ; r3*wre - i3*wim
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mova m3, Z(0)
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addps m0, m0, m1 ; i3*wre + r3*wim
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subps m1, m4, m2 ; t3
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addps m4, m4, m2 ; t5
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subps m3, m3, m4 ; r2
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addps m4, m4, Z(0) ; r0
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mova m6, Z(2)
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mova Z(4), m3
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mova Z(0), m4
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subps m3, m5, m0 ; t4
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subps m4, m6, m3 ; r3
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addps m3, m3, m6 ; r1
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IF%1 mova Z2(6), m4
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IF%1 mova Z(2), m3
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mova m2, Z(3)
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addps m5, m5, m0 ; t6
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subps m2, m2, m1 ; i3
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mova m7, Z(1)
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addps m1, m1, Z(3) ; i1
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IF%1 mova Z2(7), m2
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IF%1 mova Z(3), m1
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subps m6, m7, m5 ; i2
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addps m5, m5, m7 ; i0
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IF%1 mova Z(5), m6
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IF%1 mova Z(1), m5
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%if %1==0
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INTERL m1, m3, m7, Z, 2
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INTERL m2, m4, m0, Z2, 6
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mova m1, Z(0)
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mova m2, Z(4)
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INTERL m5, m1, m3, Z, 0
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INTERL m6, m2, m7, Z, 4
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%endif
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%endmacro
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%macro PUNPCK 3
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mova %3, %1
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punpckldq %1, %2
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punpckhdq %3, %2
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%endmacro
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%define Z(x) [r0+mmsize*x]
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%define Z2(x) [r0+mmsize*x]
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%define ZH(x) [r0+mmsize*x+mmsize/2]
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INIT_YMM
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align 16
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fft8_avx:
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mova m0, Z(0)
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mova m1, Z(1)
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T8_AVX m0, m1, m2, m3, m4
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mova Z(0), m0
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mova Z(1), m1
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ret
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align 16
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fft16_avx:
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mova m2, Z(2)
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mova m3, Z(3)
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T4_SSE m2, m3, m7
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mova m0, Z(0)
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mova m1, Z(1)
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T8_AVX m0, m1, m4, m5, m7
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mova m4, [ps_cos16_1]
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mova m5, [ps_cos16_2]
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vmulps m6, m2, m4
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vmulps m7, m3, m5
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vaddps m7, m7, m6
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vmulps m2, m2, m5
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vmulps m3, m3, m4
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vsubps m3, m3, m2
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vblendps m2, m7, m3, 0xf0
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vperm2f128 m3, m7, m3, 0x21
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vaddps m4, m2, m3
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vsubps m2, m3, m2
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vperm2f128 m2, m2, m2, 0x01
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vsubps m3, m1, m2
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vaddps m1, m1, m2
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vsubps m5, m0, m4
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vaddps m0, m0, m4
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vextractf128 Z(0), m0, 0
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vextractf128 ZH(0), m1, 0
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vextractf128 Z(1), m0, 1
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vextractf128 ZH(1), m1, 1
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vextractf128 Z(2), m5, 0
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vextractf128 ZH(2), m3, 0
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vextractf128 Z(3), m5, 1
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vextractf128 ZH(3), m3, 1
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ret
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align 16
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fft32_avx:
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call fft16_avx
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mova m0, Z(4)
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mova m1, Z(5)
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T4_SSE m0, m1, m4
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mova m2, Z(6)
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mova m3, Z(7)
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T8_SSE m0, m1, m2, m3, m4, m6
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; m0={r0,r1,r2,r3,r8, r9, r10,r11} m1={i0,i1,i2,i3,i8, i9, i10,i11}
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; m2={r4,r5,r6,r7,r12,r13,r14,r15} m3={i4,i5,i6,i7,i12,i13,i14,i15}
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vperm2f128 m4, m0, m2, 0x20
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vperm2f128 m5, m1, m3, 0x20
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vperm2f128 m6, m0, m2, 0x31
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vperm2f128 m7, m1, m3, 0x31
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PASS_SMALL 0, [cos_32], [cos_32+32]
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|
ret
|
|
|
|
fft32_interleave_avx:
|
|
call fft32_avx
|
|
mov r2d, 32
|
|
.deint_loop:
|
|
mova m2, Z(0)
|
|
mova m3, Z(1)
|
|
vunpcklps m0, m2, m3
|
|
vunpckhps m1, m2, m3
|
|
vextractf128 Z(0), m0, 0
|
|
vextractf128 ZH(0), m1, 0
|
|
vextractf128 Z(1), m0, 1
|
|
vextractf128 ZH(1), m1, 1
|
|
add r0, mmsize*2
|
|
sub r2d, mmsize/4
|
|
jg .deint_loop
|
|
ret
|
|
|
|
INIT_XMM
|
|
%define movdqa movaps
|
|
|
|
align 16
|
|
fft4_avx:
|
|
fft4_sse:
|
|
mova m0, Z(0)
|
|
mova m1, Z(1)
|
|
T4_SSE m0, m1, m2
|
|
mova Z(0), m0
|
|
mova Z(1), m1
|
|
ret
|
|
|
|
align 16
|
|
fft8_sse:
|
|
mova m0, Z(0)
|
|
mova m1, Z(1)
|
|
T4_SSE m0, m1, m2
|
|
mova m2, Z(2)
|
|
mova m3, Z(3)
|
|
T8_SSE m0, m1, m2, m3, m4, m5
|
|
mova Z(0), m0
|
|
mova Z(1), m1
|
|
mova Z(2), m2
|
|
mova Z(3), m3
|
|
ret
|
|
|
|
align 16
|
|
fft16_sse:
|
|
mova m0, Z(0)
|
|
mova m1, Z(1)
|
|
T4_SSE m0, m1, m2
|
|
mova m2, Z(2)
|
|
mova m3, Z(3)
|
|
T8_SSE m0, m1, m2, m3, m4, m5
|
|
mova m4, Z(4)
|
|
mova m5, Z(5)
|
|
mova Z(0), m0
|
|
mova Z(1), m1
|
|
mova Z(2), m2
|
|
mova Z(3), m3
|
|
T4_SSE m4, m5, m6
|
|
mova m6, Z2(6)
|
|
mova m7, Z2(7)
|
|
T4_SSE m6, m7, m0
|
|
PASS_SMALL 0, [cos_16], [cos_16+16]
|
|
ret
|
|
|
|
|
|
INIT_MMX
|
|
|
|
%macro FFT48_3DN 1
|
|
align 16
|
|
fft4%1:
|
|
T2_3DN m0, m1, Z(0), Z(1)
|
|
mova m2, Z(2)
|
|
mova m3, Z(3)
|
|
T4_3DN m0, m1, m2, m3, m4, m5
|
|
PUNPCK m0, m1, m4
|
|
PUNPCK m2, m3, m5
|
|
mova Z(0), m0
|
|
mova Z(1), m4
|
|
mova Z(2), m2
|
|
mova Z(3), m5
|
|
ret
|
|
|
|
align 16
|
|
fft8%1:
|
|
T2_3DN m0, m1, Z(0), Z(1)
|
|
mova m2, Z(2)
|
|
mova m3, Z(3)
|
|
T4_3DN m0, m1, m2, m3, m4, m5
|
|
mova Z(0), m0
|
|
mova Z(2), m2
|
|
T2_3DN m4, m5, Z(4), Z(5)
|
|
T2_3DN m6, m7, Z2(6), Z2(7)
|
|
pswapd m0, m5
|
|
pswapd m2, m7
|
|
pxor m0, [ps_m1p1]
|
|
pxor m2, [ps_m1p1]
|
|
pfsub m5, m0
|
|
pfadd m7, m2
|
|
pfmul m5, [ps_root2]
|
|
pfmul m7, [ps_root2]
|
|
T4_3DN m1, m3, m5, m7, m0, m2
|
|
mova Z(5), m5
|
|
mova Z2(7), m7
|
|
mova m0, Z(0)
|
|
mova m2, Z(2)
|
|
T4_3DN m0, m2, m4, m6, m5, m7
|
|
PUNPCK m0, m1, m5
|
|
PUNPCK m2, m3, m7
|
|
mova Z(0), m0
|
|
mova Z(1), m5
|
|
mova Z(2), m2
|
|
mova Z(3), m7
|
|
PUNPCK m4, Z(5), m5
|
|
PUNPCK m6, Z2(7), m7
|
|
mova Z(4), m4
|
|
mova Z(5), m5
|
|
mova Z2(6), m6
|
|
mova Z2(7), m7
|
|
ret
|
|
%endmacro
|
|
|
|
FFT48_3DN _3dn2
|
|
|
|
%macro pswapd 2
|
|
%ifidn %1, %2
|
|
movd [r0+12], %1
|
|
punpckhdq %1, [r0+8]
|
|
%else
|
|
movq %1, %2
|
|
psrlq %1, 32
|
|
punpckldq %1, %2
|
|
%endif
|
|
%endmacro
|
|
|
|
FFT48_3DN _3dn
|
|
|
|
|
|
%define Z(x) [zq + o1q*(x&6) + mmsize*(x&1)]
|
|
%define Z2(x) [zq + o3q + mmsize*(x&1)]
|
|
%define ZH(x) [zq + o1q*(x&6) + mmsize*(x&1) + mmsize/2]
|
|
%define Z2H(x) [zq + o3q + mmsize*(x&1) + mmsize/2]
|
|
|
|
%macro DECL_PASS 2+ ; name, payload
|
|
align 16
|
|
%1:
|
|
DEFINE_ARGS z, w, n, o1, o3
|
|
lea o3q, [nq*3]
|
|
lea o1q, [nq*8]
|
|
shl o3q, 4
|
|
.loop:
|
|
%2
|
|
add zq, mmsize*2
|
|
add wq, mmsize
|
|
sub nd, mmsize/8
|
|
jg .loop
|
|
rep ret
|
|
%endmacro
|
|
|
|
INIT_YMM
|
|
|
|
%macro INTERL_AVX 5
|
|
vunpckhps %3, %2, %1
|
|
vunpcklps %2, %2, %1
|
|
vextractf128 %4(%5), %2, 0
|
|
vextractf128 %4 %+ H(%5), %3, 0
|
|
vextractf128 %4(%5 + 1), %2, 1
|
|
vextractf128 %4 %+ H(%5 + 1), %3, 1
|
|
%endmacro
|
|
|
|
%define INTERL INTERL_AVX
|
|
|
|
DECL_PASS pass_avx, PASS_BIG 1
|
|
DECL_PASS pass_interleave_avx, PASS_BIG 0
|
|
|
|
INIT_XMM
|
|
|
|
%macro INTERL_SSE 5
|
|
mova %3, %2
|
|
unpcklps %2, %1
|
|
unpckhps %3, %1
|
|
mova %4(%5), %2
|
|
mova %4(%5+1), %3
|
|
%endmacro
|
|
|
|
%define INTERL INTERL_SSE
|
|
|
|
DECL_PASS pass_sse, PASS_BIG 1
|
|
DECL_PASS pass_interleave_sse, PASS_BIG 0
|
|
|
|
INIT_MMX
|
|
%define mulps pfmul
|
|
%define addps pfadd
|
|
%define subps pfsub
|
|
%define unpcklps punpckldq
|
|
%define unpckhps punpckhdq
|
|
DECL_PASS pass_3dn, PASS_SMALL 1, [wq], [wq+o1q]
|
|
DECL_PASS pass_interleave_3dn, PASS_BIG 0
|
|
%define pass_3dn2 pass_3dn
|
|
%define pass_interleave_3dn2 pass_interleave_3dn
|
|
|
|
%ifdef PIC
|
|
%define SECTION_REL - $$
|
|
%else
|
|
%define SECTION_REL
|
|
%endif
|
|
|
|
%macro FFT_DISPATCH 2; clobbers 5 GPRs, 8 XMMs
|
|
lea r2, [dispatch_tab%1]
|
|
mov r2, [r2 + (%2q-2)*gprsize]
|
|
%ifdef PIC
|
|
lea r3, [$$]
|
|
add r2, r3
|
|
%endif
|
|
call r2
|
|
%endmacro ; FFT_DISPATCH
|
|
|
|
%macro DECL_FFT 2-3 ; nbits, cpu, suffix
|
|
%xdefine list_of_fft fft4%2 SECTION_REL, fft8%2 SECTION_REL
|
|
%if %1>=5
|
|
%xdefine list_of_fft list_of_fft, fft16%2 SECTION_REL
|
|
%endif
|
|
%if %1>=6
|
|
%xdefine list_of_fft list_of_fft, fft32%3%2 SECTION_REL
|
|
%endif
|
|
|
|
%assign n 1<<%1
|
|
%rep 17-%1
|
|
%assign n2 n/2
|
|
%assign n4 n/4
|
|
%xdefine list_of_fft list_of_fft, fft %+ n %+ %3%2 SECTION_REL
|
|
|
|
align 16
|
|
fft %+ n %+ %3%2:
|
|
call fft %+ n2 %+ %2
|
|
add r0, n*4 - (n&(-2<<%1))
|
|
call fft %+ n4 %+ %2
|
|
add r0, n*2 - (n2&(-2<<%1))
|
|
call fft %+ n4 %+ %2
|
|
sub r0, n*6 + (n2&(-2<<%1))
|
|
lea r1, [cos_ %+ n]
|
|
mov r2d, n4/2
|
|
jmp pass%3%2
|
|
|
|
%assign n n*2
|
|
%endrep
|
|
%undef n
|
|
|
|
align 8
|
|
dispatch_tab%3%2: pointer list_of_fft
|
|
|
|
section .text
|
|
|
|
; On x86_32, this function does the register saving and restoring for all of fft.
|
|
; The others pass args in registers and don't spill anything.
|
|
cglobal fft_dispatch%3%2, 2,5,8, z, nbits
|
|
FFT_DISPATCH %3%2, nbits
|
|
%ifidn %2, _avx
|
|
vzeroupper
|
|
%endif
|
|
RET
|
|
%endmacro ; DECL_FFT
|
|
|
|
DECL_FFT 6, _avx
|
|
DECL_FFT 6, _avx, _interleave
|
|
DECL_FFT 5, _sse
|
|
DECL_FFT 5, _sse, _interleave
|
|
DECL_FFT 4, _3dn
|
|
DECL_FFT 4, _3dn, _interleave
|
|
DECL_FFT 4, _3dn2
|
|
DECL_FFT 4, _3dn2, _interleave
|
|
|
|
INIT_XMM
|
|
%undef mulps
|
|
%undef addps
|
|
%undef subps
|
|
%undef unpcklps
|
|
%undef unpckhps
|
|
|
|
%macro PREROTATER 5 ;-2*k, 2*k, input+n4, tcos+n8, tsin+n8
|
|
movaps xmm0, [%3+%2*4]
|
|
movaps xmm1, [%3+%1*4-0x10]
|
|
movaps xmm2, xmm0
|
|
shufps xmm0, xmm1, 0x88
|
|
shufps xmm1, xmm2, 0x77
|
|
movlps xmm4, [%4+%2*2]
|
|
movlps xmm5, [%5+%2*2+0x0]
|
|
movhps xmm4, [%4+%1*2-0x8]
|
|
movhps xmm5, [%5+%1*2-0x8]
|
|
movaps xmm2, xmm0
|
|
movaps xmm3, xmm1
|
|
mulps xmm0, xmm5
|
|
mulps xmm1, xmm4
|
|
mulps xmm2, xmm4
|
|
mulps xmm3, xmm5
|
|
subps xmm1, xmm0
|
|
addps xmm2, xmm3
|
|
movaps xmm0, xmm1
|
|
unpcklps xmm1, xmm2
|
|
unpckhps xmm0, xmm2
|
|
%endmacro
|
|
|
|
%macro CMUL 6 ;j, xmm0, xmm1, 3, 4, 5
|
|
mulps m6, %3, [%5+%1]
|
|
mulps m7, %2, [%5+%1]
|
|
mulps %2, %2, [%6+%1]
|
|
mulps %3, %3, [%6+%1]
|
|
subps %2, %2, m6
|
|
addps %3, %3, m7
|
|
%endmacro
|
|
|
|
%macro POSROTATESHUF_AVX 5 ;j, k, z+n8, tcos+n8, tsin+n8
|
|
.post:
|
|
vmovaps ymm1, [%3+%1*2]
|
|
vmovaps ymm0, [%3+%1*2+0x20]
|
|
vmovaps ymm3, [%3+%2*2]
|
|
vmovaps ymm2, [%3+%2*2+0x20]
|
|
|
|
CMUL %1, ymm0, ymm1, %3, %4, %5
|
|
CMUL %2, ymm2, ymm3, %3, %4, %5
|
|
vshufps ymm1, ymm1, ymm1, 0x1b
|
|
vshufps ymm3, ymm3, ymm3, 0x1b
|
|
vperm2f128 ymm1, ymm1, ymm1, 0x01
|
|
vperm2f128 ymm3, ymm3, ymm3, 0x01
|
|
vunpcklps ymm6, ymm2, ymm1
|
|
vunpckhps ymm4, ymm2, ymm1
|
|
vunpcklps ymm7, ymm0, ymm3
|
|
vunpckhps ymm5, ymm0, ymm3
|
|
|
|
vextractf128 [%3+%1*2], ymm7, 0
|
|
vextractf128 [%3+%1*2+0x10], ymm5, 0
|
|
vextractf128 [%3+%1*2+0x20], ymm7, 1
|
|
vextractf128 [%3+%1*2+0x30], ymm5, 1
|
|
|
|
vextractf128 [%3+%2*2], ymm6, 0
|
|
vextractf128 [%3+%2*2+0x10], ymm4, 0
|
|
vextractf128 [%3+%2*2+0x20], ymm6, 1
|
|
vextractf128 [%3+%2*2+0x30], ymm4, 1
|
|
sub %2, 0x20
|
|
add %1, 0x20
|
|
jl .post
|
|
%endmacro
|
|
|
|
%macro POSROTATESHUF 5 ;j, k, z+n8, tcos+n8, tsin+n8
|
|
.post:
|
|
movaps xmm1, [%3+%1*2]
|
|
movaps xmm0, [%3+%1*2+0x10]
|
|
CMUL %1, xmm0, xmm1, %3, %4, %5
|
|
movaps xmm5, [%3+%2*2]
|
|
movaps xmm4, [%3+%2*2+0x10]
|
|
CMUL %2, xmm4, xmm5, %3, %4, %5
|
|
shufps xmm1, xmm1, 0x1b
|
|
shufps xmm5, xmm5, 0x1b
|
|
movaps xmm6, xmm4
|
|
unpckhps xmm4, xmm1
|
|
unpcklps xmm6, xmm1
|
|
movaps xmm2, xmm0
|
|
unpcklps xmm0, xmm5
|
|
unpckhps xmm2, xmm5
|
|
movaps [%3+%2*2], xmm6
|
|
movaps [%3+%2*2+0x10], xmm4
|
|
movaps [%3+%1*2], xmm0
|
|
movaps [%3+%1*2+0x10], xmm2
|
|
sub %2, 0x10
|
|
add %1, 0x10
|
|
jl .post
|
|
%endmacro
|
|
|
|
%macro DECL_IMDCT 2
|
|
cglobal imdct_half%1, 3,7,8; FFTContext *s, FFTSample *output, const FFTSample *input
|
|
%ifdef ARCH_X86_64
|
|
%define rrevtab r10
|
|
%define rtcos r11
|
|
%define rtsin r12
|
|
push r12
|
|
push r13
|
|
push r14
|
|
%else
|
|
%define rrevtab r6
|
|
%define rtsin r6
|
|
%define rtcos r5
|
|
%endif
|
|
mov r3d, [r0+FFTContext.mdctsize]
|
|
add r2, r3
|
|
shr r3, 1
|
|
mov rtcos, [r0+FFTContext.tcos]
|
|
mov rtsin, [r0+FFTContext.tsin]
|
|
add rtcos, r3
|
|
add rtsin, r3
|
|
%ifndef ARCH_X86_64
|
|
push rtcos
|
|
push rtsin
|
|
%endif
|
|
shr r3, 1
|
|
mov rrevtab, [r0+FFTContext.revtab]
|
|
add rrevtab, r3
|
|
%ifndef ARCH_X86_64
|
|
push rrevtab
|
|
%endif
|
|
|
|
sub r3, 4
|
|
%ifdef ARCH_X86_64
|
|
xor r4, r4
|
|
sub r4, r3
|
|
%endif
|
|
.pre:
|
|
%ifndef ARCH_X86_64
|
|
;unspill
|
|
xor r4, r4
|
|
sub r4, r3
|
|
mov rtsin, [esp+4]
|
|
mov rtcos, [esp+8]
|
|
%endif
|
|
|
|
PREROTATER r4, r3, r2, rtcos, rtsin
|
|
%ifdef ARCH_X86_64
|
|
movzx r5, word [rrevtab+r4-4]
|
|
movzx r6, word [rrevtab+r4-2]
|
|
movzx r13, word [rrevtab+r3]
|
|
movzx r14, word [rrevtab+r3+2]
|
|
movlps [r1+r5 *8], xmm0
|
|
movhps [r1+r6 *8], xmm0
|
|
movlps [r1+r13*8], xmm1
|
|
movhps [r1+r14*8], xmm1
|
|
add r4, 4
|
|
%else
|
|
mov r6, [esp]
|
|
movzx r5, word [r6+r4-4]
|
|
movzx r4, word [r6+r4-2]
|
|
movlps [r1+r5*8], xmm0
|
|
movhps [r1+r4*8], xmm0
|
|
movzx r5, word [r6+r3]
|
|
movzx r4, word [r6+r3+2]
|
|
movlps [r1+r5*8], xmm1
|
|
movhps [r1+r4*8], xmm1
|
|
%endif
|
|
sub r3, 4
|
|
jns .pre
|
|
|
|
mov r5, r0
|
|
mov r6, r1
|
|
mov r0, r1
|
|
mov r1d, [r5+FFTContext.nbits]
|
|
|
|
FFT_DISPATCH %1, r1
|
|
|
|
mov r0d, [r5+FFTContext.mdctsize]
|
|
add r6, r0
|
|
shr r0, 1
|
|
%ifndef ARCH_X86_64
|
|
%define rtcos r2
|
|
%define rtsin r3
|
|
mov rtcos, [esp+8]
|
|
mov rtsin, [esp+4]
|
|
%endif
|
|
neg r0
|
|
mov r1, -mmsize
|
|
sub r1, r0
|
|
%2 r0, r1, r6, rtcos, rtsin
|
|
%ifdef ARCH_X86_64
|
|
pop r14
|
|
pop r13
|
|
pop r12
|
|
%else
|
|
add esp, 12
|
|
%endif
|
|
%ifidn avx_enabled, 1
|
|
vzeroupper
|
|
%endif
|
|
RET
|
|
%endmacro
|
|
|
|
DECL_IMDCT _sse, POSROTATESHUF
|
|
|
|
INIT_YMM
|
|
|
|
DECL_IMDCT _avx, POSROTATESHUF_AVX
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