mirror of
https://github.com/FFmpeg/FFmpeg.git
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124 lines
3.2 KiB
NASM
124 lines
3.2 KiB
NASM
;******************************************************************************
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;* SSE-optimized functions for the DCA decoder
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;* Copyright (C) 2012-2014 Christophe Gisquet <christophe.gisquet@gmail.com>
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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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%include "libavutil/x86/x86util.asm"
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SECTION_RODATA
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pf_inv16: times 4 dd 0x3D800000 ; 1/16
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SECTION .text
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; %1=v0/v1 %2=in1 %3=in2
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%macro FIR_LOOP 2-3
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.loop%1:
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%define va m1
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%define vb m2
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%if %1
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%define OFFSET 0
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%else
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%define OFFSET NUM_COEF*count
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%endif
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; for v0, incrementing and for v1, decrementing
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mova va, [cf0q + OFFSET]
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mova vb, [cf0q + OFFSET + 4*NUM_COEF]
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%if %0 == 3
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mova m4, [cf0q + OFFSET + mmsize]
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mova m0, [cf0q + OFFSET + 4*NUM_COEF + mmsize]
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%endif
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mulps va, %2
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mulps vb, %2
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%if %0 == 3
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%if cpuflag(fma3)
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fmaddps va, m4, %3, va
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fmaddps vb, m0, %3, vb
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%else
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mulps m4, %3
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mulps m0, %3
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addps va, m4
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addps vb, m0
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%endif
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%endif
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; va = va1 va2 va3 va4
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; vb = vb1 vb2 vb3 vb4
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%if %1
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SWAP va, vb
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%endif
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mova m4, va
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unpcklps va, vb ; va3 vb3 va4 vb4
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unpckhps m4, vb ; va1 vb1 va2 vb2
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addps m4, va ; va1+3 vb1+3 va2+4 vb2+4
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movhlps vb, m4 ; va1+3 vb1+3
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addps vb, m4 ; va0..4 vb0..4
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movlps [outq + count], vb
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%if %1
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sub cf0q, 8*NUM_COEF
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%endif
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add count, 8
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jl .loop%1
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%endmacro
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; void dca_lfe_fir(float *out, float *in, float *coefs)
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%macro DCA_LFE_FIR 1
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cglobal dca_lfe_fir%1, 3,3,6-%1, out, in, cf0
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%define IN1 m3
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%define IN2 m5
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%define count inq
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%define NUM_COEF 4*(2-%1)
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%define NUM_OUT 32*(%1+1)
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movu IN1, [inq + 4 - 1*mmsize]
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shufps IN1, IN1, q0123
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%if %1 == 0
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movu IN2, [inq + 4 - 2*mmsize]
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shufps IN2, IN2, q0123
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%endif
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mov count, -4*NUM_OUT
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add cf0q, 4*NUM_COEF*NUM_OUT
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add outq, 4*NUM_OUT
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; compute v0 first
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%if %1 == 0
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FIR_LOOP 0, IN1, IN2
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%else
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FIR_LOOP 0, IN1
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%endif
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shufps IN1, IN1, q0123
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mov count, -4*NUM_OUT
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; cf1 already correctly positioned
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add outq, 4*NUM_OUT ; outq now at out2
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sub cf0q, 8*NUM_COEF
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%if %1 == 0
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shufps IN2, IN2, q0123
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FIR_LOOP 1, IN2, IN1
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%else
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FIR_LOOP 1, IN1
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%endif
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RET
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%endmacro
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INIT_XMM sse
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DCA_LFE_FIR 0
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DCA_LFE_FIR 1
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%if HAVE_FMA3_EXTERNAL
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INIT_XMM fma3
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DCA_LFE_FIR 0
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%endif
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