CoCalc -- float_dsp

05. Matplotlib / ffmpeg-3.0 / libavutil / arm / float_dsp_neon.S
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/*
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 * ARM NEON optimised Float DSP functions
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 * Copyright (c) 2008 Mans Rullgard <[email protected]>
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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 "config.h"
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#include "asm.S"
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function ff_vector_fmul_neon, export=1
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        subs            r3,  r3,  #8
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        vld1.32         {d0-d3},  [r1,:128]!
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        vld1.32         {d4-d7},  [r2,:128]!
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        vmul.f32        q8,  q0,  q2
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        vmul.f32        q9,  q1,  q3
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        beq             3f
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        bics            ip,  r3,  #15
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        beq             2f
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1:      subs            ip,  ip,  #16
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        vld1.32         {d0-d1},  [r1,:128]!
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        vld1.32         {d4-d5},  [r2,:128]!
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        vmul.f32        q10, q0,  q2
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        vld1.32         {d2-d3},  [r1,:128]!
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        vld1.32         {d6-d7},  [r2,:128]!
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        vmul.f32        q11, q1,  q3
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        vst1.32         {d16-d19},[r0,:128]!
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        vld1.32         {d0-d1},  [r1,:128]!
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        vld1.32         {d4-d5},  [r2,:128]!
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        vmul.f32        q8,  q0,  q2
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        vld1.32         {d2-d3},  [r1,:128]!
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        vld1.32         {d6-d7},  [r2,:128]!
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        vmul.f32        q9,  q1,  q3
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        vst1.32         {d20-d23},[r0,:128]!
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        bne             1b
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        ands            r3,  r3,  #15
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        beq             3f
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2:      vld1.32         {d0-d1},  [r1,:128]!
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        vld1.32         {d4-d5},  [r2,:128]!
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        vst1.32         {d16-d17},[r0,:128]!
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        vmul.f32        q8,  q0,  q2
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        vld1.32         {d2-d3},  [r1,:128]!
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        vld1.32         {d6-d7},  [r2,:128]!
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        vst1.32         {d18-d19},[r0,:128]!
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        vmul.f32        q9,  q1,  q3
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3:      vst1.32         {d16-d19},[r0,:128]!
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        bx              lr
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endfunc
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function ff_vector_fmac_scalar_neon, export=1
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VFP     len .req r2
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VFP     acc .req r3
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NOVFP   len .req r3
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NOVFP   acc .req r2
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VFP     vdup.32         q15, d0[0]
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NOVFP   vdup.32         q15, r2
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        bics            r12, len, #15
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        mov             acc, r0
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        beq             3f
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        vld1.32         {q0},     [r1,:128]!
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        vld1.32         {q8},     [acc,:128]!
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        vld1.32         {q1},     [r1,:128]!
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        vld1.32         {q9},     [acc,:128]!
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1:      vmla.f32        q8,  q0,  q15
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        vld1.32         {q2},     [r1,:128]!
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        vld1.32         {q10},    [acc,:128]!
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        vmla.f32        q9,  q1,  q15
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        vld1.32         {q3},     [r1,:128]!
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        vld1.32         {q11},    [acc,:128]!
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        vmla.f32        q10, q2,  q15
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        vst1.32         {q8},     [r0,:128]!
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        vmla.f32        q11, q3,  q15
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        vst1.32         {q9},     [r0,:128]!
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        subs            r12, r12, #16
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        beq             2f
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        vld1.32         {q0},     [r1,:128]!
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        vld1.32         {q8},     [acc,:128]!
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        vst1.32         {q10},    [r0,:128]!
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        vld1.32         {q1},     [r1,:128]!
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        vld1.32         {q9},     [acc,:128]!
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        vst1.32         {q11},    [r0,:128]!
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        b               1b
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2:      vst1.32         {q10},    [r0,:128]!
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        vst1.32         {q11},    [r0,:128]!
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        ands            len, len, #15
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        it              eq
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        bxeq            lr
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3:      vld1.32         {q0},     [r1,:128]!
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        vld1.32         {q8},     [acc,:128]!
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        vmla.f32        q8,  q0,  q15
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        vst1.32         {q8},     [r0,:128]!
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        subs            len, len, #4
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        bgt             3b
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        bx              lr
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        .unreq          len
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endfunc
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function ff_vector_fmul_scalar_neon, export=1
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VFP     len .req r2
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NOVFP   len .req r3
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VFP     vdup.32         q8,  d0[0]
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NOVFP   vdup.32         q8,  r2
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        bics            r12, len, #15
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        beq             3f
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        vld1.32         {q0},[r1,:128]!
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        vld1.32         {q1},[r1,:128]!
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1:      vmul.f32        q0,  q0,  q8
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        vld1.32         {q2},[r1,:128]!
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        vmul.f32        q1,  q1,  q8
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        vld1.32         {q3},[r1,:128]!
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        vmul.f32        q2,  q2,  q8
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        vst1.32         {q0},[r0,:128]!
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        vmul.f32        q3,  q3,  q8
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        vst1.32         {q1},[r0,:128]!
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        subs            r12, r12, #16
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        beq             2f
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        vld1.32         {q0},[r1,:128]!
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        vst1.32         {q2},[r0,:128]!
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        vld1.32         {q1},[r1,:128]!
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        vst1.32         {q3},[r0,:128]!
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        b               1b
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2:      vst1.32         {q2},[r0,:128]!
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        vst1.32         {q3},[r0,:128]!
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        ands            len, len, #15
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        it              eq
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        bxeq            lr
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3:      vld1.32         {q0},[r1,:128]!
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        vmul.f32        q0,  q0,  q8
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        vst1.32         {q0},[r0,:128]!
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        subs            len, len, #4
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        bgt             3b
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        bx              lr
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        .unreq          len
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endfunc
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function ff_vector_fmul_window_neon, export=1
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        push            {r4,r5,lr}
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        ldr             lr,  [sp, #12]
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        sub             r2,  r2,  #8
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        sub             r5,  lr,  #2
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        add             r2,  r2,  r5, lsl #2
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        add             r4,  r3,  r5, lsl #3
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        add             ip,  r0,  r5, lsl #3
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        mov             r5,  #-16
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        vld1.32         {d0,d1},  [r1,:128]!
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        vld1.32         {d2,d3},  [r2,:128], r5
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        vld1.32         {d4,d5},  [r3,:128]!
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        vld1.32         {d6,d7},  [r4,:128], r5
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1:      subs            lr,  lr,  #4
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        vmul.f32        d22, d0,  d4
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        vrev64.32       q3,  q3
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        vmul.f32        d23, d1,  d5
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        vrev64.32       q1,  q1
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        vmul.f32        d20, d0,  d7
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        vmul.f32        d21, d1,  d6
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        beq             2f
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        vmla.f32        d22, d3,  d7
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        vld1.32         {d0,d1},  [r1,:128]!
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        vmla.f32        d23, d2,  d6
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        vld1.32         {d18,d19},[r2,:128], r5
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        vmls.f32        d20, d3,  d4
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        vld1.32         {d24,d25},[r3,:128]!
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        vmls.f32        d21, d2,  d5
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        vld1.32         {d6,d7},  [r4,:128], r5
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        vmov            q1,  q9
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        vrev64.32       q11, q11
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        vmov            q2,  q12
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        vswp            d22, d23
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        vst1.32         {d20,d21},[r0,:128]!
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        vst1.32         {d22,d23},[ip,:128], r5
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        b               1b
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2:      vmla.f32        d22, d3,  d7
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        vmla.f32        d23, d2,  d6
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        vmls.f32        d20, d3,  d4
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        vmls.f32        d21, d2,  d5
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        vrev64.32       q11, q11
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        vswp            d22, d23
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        vst1.32         {d20,d21},[r0,:128]!
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        vst1.32         {d22,d23},[ip,:128], r5
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        pop             {r4,r5,pc}
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endfunc
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function ff_vector_fmul_add_neon, export=1
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        ldr             r12, [sp]
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        vld1.32         {q0-q1},  [r1,:128]!
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        vld1.32         {q8-q9},  [r2,:128]!
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        vld1.32         {q2-q3},  [r3,:128]!
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        vmul.f32        q10, q0,  q8
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        vmul.f32        q11, q1,  q9
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1:      vadd.f32        q12, q2,  q10
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        vadd.f32        q13, q3,  q11
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        pld             [r1, #16]
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        pld             [r2, #16]
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        pld             [r3, #16]
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        subs            r12, r12, #8
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        beq             2f
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        vld1.32         {q0},     [r1,:128]!
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        vld1.32         {q8},     [r2,:128]!
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        vmul.f32        q10, q0,  q8
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        vld1.32         {q1},     [r1,:128]!
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        vld1.32         {q9},     [r2,:128]!
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        vmul.f32        q11, q1,  q9
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        vld1.32         {q2-q3},  [r3,:128]!
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        vst1.32         {q12-q13},[r0,:128]!
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        b               1b
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2:      vst1.32         {q12-q13},[r0,:128]!
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        bx              lr
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endfunc
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function ff_vector_fmul_reverse_neon, export=1
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        add             r2,  r2,  r3,  lsl #2
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        sub             r2,  r2,  #32
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        mov             r12, #-32
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        vld1.32         {q0-q1},  [r1,:128]!
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        vld1.32         {q2-q3},  [r2,:128], r12
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1:      pld             [r1, #32]
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        vrev64.32       q3,  q3
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        vmul.f32        d16, d0,  d7
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        vmul.f32        d17, d1,  d6
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        pld             [r2, #-32]
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        vrev64.32       q2,  q2
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        vmul.f32        d18, d2,  d5
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        vmul.f32        d19, d3,  d4
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        subs            r3,  r3,  #8
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        beq             2f
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        vld1.32         {q0-q1},  [r1,:128]!
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        vld1.32         {q2-q3},  [r2,:128], r12
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        vst1.32         {q8-q9},  [r0,:128]!
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        b               1b
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2:      vst1.32         {q8-q9},  [r0,:128]!
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        bx              lr
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endfunc
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function ff_butterflies_float_neon, export=1
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1:      vld1.32         {q0},[r0,:128]
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        vld1.32         {q1},[r1,:128]
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        vsub.f32        q2,  q0,  q1
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        vadd.f32        q1,  q0,  q1
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        vst1.32         {q2},[r1,:128]!
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        vst1.32         {q1},[r0,:128]!
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        subs            r2,  r2,  #4
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        bgt             1b
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        bx              lr
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endfunc
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function ff_scalarproduct_float_neon, export=1
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        vmov.f32        q2,  #0.0
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1:      vld1.32         {q0},[r0,:128]!
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        vld1.32         {q1},[r1,:128]!
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        vmla.f32        q2,  q0,  q1
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        subs            r2,  r2,  #4
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        bgt             1b
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        vadd.f32        d0,  d4,  d5
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        vpadd.f32       d0,  d0,  d0
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NOVFP   vmov.32         r0,  d0[0]
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        bx              lr
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endfunc
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