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123 lines
3.2 KiB
123 lines
3.2 KiB
;****************************************************************************** |
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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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