/* * ARM NEON optimised Format Conversion Utils * Copyright (c) 2008 Mans Rullgard <mans@mansr.com> * Copyright (c) 2015 Janne Grunau <janne-libav@jannau.net>b * * This file is part of FFmpeg. * * FFmpeg 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. * * FFmpeg 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 FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "config.h" #include "libavutil/arm/asm.S" function ff_int32_to_float_fmul_scalar_neon, export=1 VFP vdup.32 q0, d0[0] VFP len .req r2 NOVFP vdup.32 q0, r2 NOVFP len .req r3 vld1.32 {q1},[r1,:128]! vcvt.f32.s32 q3, q1 vld1.32 {q2},[r1,:128]! vcvt.f32.s32 q8, q2 1: subs len, len, #8 pld [r1, #16] vmul.f32 q9, q3, q0 vmul.f32 q10, q8, q0 beq 2f vld1.32 {q1},[r1,:128]! vcvt.f32.s32 q3, q1 vld1.32 {q2},[r1,:128]! vcvt.f32.s32 q8, q2 vst1.32 {q9}, [r0,:128]! vst1.32 {q10},[r0,:128]! b 1b 2: vst1.32 {q9}, [r0,:128]! vst1.32 {q10},[r0,:128]! bx lr .unreq len endfunc function ff_int32_to_float_fmul_array8_neon, export=1 ldr r0, [sp] lsr r0, r0, #3 subs r0, r0, #1 beq 1f 2: vld1.32 {q0-q1}, [r2,:128]! vld1.32 {q2-q3}, [r2,:128]! vld1.32 {d20}, [r3]! subs r0, r0, #2 vcvt.f32.s32 q0, q0 vcvt.f32.s32 q1, q1 vdup.32 q8, d20[0] vcvt.f32.s32 q2, q2 vcvt.f32.s32 q3, q3 vmul.f32 q0, q0, q8 vdup.32 q9, d20[1] vmul.f32 q1, q1, q8 vmul.f32 q2, q2, q9 vmul.f32 q3, q3, q9 vst1.32 {q0-q1}, [r1,:128]! vst1.32 {q2-q3}, [r1,:128]! bgt 2b it lt bxlt lr 1: vld1.32 {q0-q1}, [r2,:128] vld1.32 {d16[],d17[]}, [r3] vcvt.f32.s32 q0, q0 vcvt.f32.s32 q1, q1 vmul.f32 q0, q0, q8 vmul.f32 q1, q1, q8 vst1.32 {q0-q1}, [r1,:128] bx lr endfunc