/* * Copyright (c) 2011 Mans Rullgard <mans@mansr.com> * * This file is part of Libav. * * Libav 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. * * Libav 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 Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "asm.S" function ff_ac3_max_msb_abs_int16_neon, export=1 vmov.i16 q0, #0 vmov.i16 q2, #0 1: vld1.16 {q1}, [r0,:128]! vabs.s16 q1, q1 vld1.16 {q3}, [r0,:128]! vabs.s16 q3, q3 vorr q0, q0, q1 vorr q2, q2, q3 subs r1, r1, #16 bgt 1b vorr q0, q0, q2 vorr d0, d0, d1 vpmax.u16 d0, d0, d0 vpmax.u16 d0, d0, d0 vmov.u16 r0, d0[0] bx lr endfunc function ff_ac3_exponent_min_neon, export=1 cmp r1, #0 it eq bxeq lr push {lr} mov r12, #256 1: vld1.8 {q0}, [r0,:128] mov lr, r1 add r3, r0, #256 2: vld1.8 {q1}, [r3,:128], r12 subs lr, lr, #1 vmin.u8 q0, q0, q1 bgt 2b subs r2, r2, #16 vst1.8 {q0}, [r0,:128]! bgt 1b pop {pc} endfunc function ff_ac3_lshift_int16_neon, export=1 vdup.16 q0, r2 1: vld1.16 {q1}, [r0,:128] vshl.s16 q1, q1, q0 vst1.16 {q1}, [r0,:128]! subs r1, r1, #8 bgt 1b bx lr endfunc function ff_ac3_rshift_int32_neon, export=1 rsb r2, r2, #0 vdup.32 q0, r2 1: vld1.32 {q1}, [r0,:128] vshl.s32 q1, q1, q0 vst1.32 {q1}, [r0,:128]! subs r1, r1, #4 bgt 1b bx lr endfunc function ff_float_to_fixed24_neon, export=1 1: vld1.32 {q0-q1}, [r1,:128]! vcvt.s32.f32 q0, q0, #24 vld1.32 {q2-q3}, [r1,:128]! vcvt.s32.f32 q1, q1, #24 vcvt.s32.f32 q2, q2, #24 vst1.32 {q0-q1}, [r0,:128]! vcvt.s32.f32 q3, q3, #24 vst1.32 {q2-q3}, [r0,:128]! subs r2, r2, #16 bgt 1b bx lr endfunc function ff_ac3_extract_exponents_neon, export=1 vmov.i32 q15, #8 1: vld1.32 {q0}, [r1,:128]! vabs.s32 q1, q0 vclz.i32 q3, q1 vsub.i32 q3, q3, q15 vmovn.i32 d6, q3 vmovn.i16 d6, q3 vst1.32 {d6[0]}, [r0,:32]! subs r2, r2, #4 bgt 1b bx lr endfunc