ref: 96de6e01587666ef58f4eee5fdf6ba3f057185ef
dir: /codec/decoder/core/arm/block_add_neon.S/
/*! * \copy * Copyright (c) 2013, Cisco Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * */ #ifdef HAVE_NEON #include "arm_arch_common_macro.S" .macro ROW_TRANSFORM_1_STEP arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9 // { // input: src_d[0]~[3], output: e_q[0]~[3]; working: $8 $9 vaddl.s16 \arg4, \arg0, \arg2 //int32 e[i][0] = src[0] + src[2]; vsubl.s16 \arg5, \arg0, \arg2 //int32 e[i][1] = src[0] - src[2]; vshr.s16 \arg8, \arg1, #1 vshr.s16 \arg9, \arg3, #1 vsubl.s16 \arg6, \arg8, \arg3 //int32 e[i][2] = (src[1]>>1)-src[3]; vaddl.s16 \arg7, \arg1, \arg9 //int32 e[i][3] = src[1] + (src[3]>>1); // } .endm .macro TRANSFORM_4BYTES arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7 // both row & col transform used // { // output: f_q[0]~[3], input: e_q[0]~[3]; vadd.s32 \arg0, \arg4, \arg7 //int16 f[i][0] = e[i][0] + e[i][3]; vadd.s32 \arg1, \arg5, \arg6 //int16 f[i][1] = e[i][1] + e[i][2]; vsub.s32 \arg2, \arg5, \arg6 //int16 f[i][2] = e[i][1] - e[i][2]; vsub.s32 \arg3, \arg4, \arg7 //int16 f[i][3] = e[i][0] - e[i][3]; // } .endm .macro COL_TRANSFORM_1_STEP arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7 // { // input: src_q[0]~[3], output: e_q[0]~[3]; vadd.s32 \arg4, \arg0, \arg2 //int32 e[0][j] = f[0][j] + f[2][j]; vsub.s32 \arg5, \arg0, \arg2 //int32 e[1][j] = f[0][j] - f[2][j]; vshr.s32 \arg6, \arg1, #1 vshr.s32 \arg7, \arg3, #1 vsub.s32 \arg6, \arg6, \arg3 //int32 e[2][j] = (f[1][j]>>1) - f[3][j]; vadd.s32 \arg7, \arg1, \arg7 //int32 e[3][j] = f[1][j] + (f[3][j]>>1); // } .endm // uint8_t *pred, const int32_t stride, int16_t *rs WELS_ASM_FUNC_BEGIN IdctResAddPred_neon vld4.s16 {d0, d1, d2, d3}, [r2] // cost 3 cycles! ROW_TRANSFORM_1_STEP d0, d1, d2, d3, q8, q9, q10, q11, d4, d5 TRANSFORM_4BYTES q0, q1, q2, q3, q8, q9, q10, q11 // transform element 32bits vtrn.s32 q0, q1 //[0 1 2 3]+[4 5 6 7]-->[0 4 2 6]+[1 5 3 7] vtrn.s32 q2, q3 //[8 9 10 11]+[12 13 14 15]-->[8 12 10 14]+[9 13 11 15] vswp d1, d4 //[0 4 2 6]+[8 12 10 14]-->[0 4 8 12]+[2 6 10 14] vswp d3, d6 //[1 5 3 7]+[9 13 11 15]-->[1 5 9 13]+[3 7 11 15] COL_TRANSFORM_1_STEP q0, q1, q2, q3, q8, q9, q10, q11 TRANSFORM_4BYTES q0, q1, q2, q3, q8, q9, q10, q11 //after clip_table[MAX_NEG_CROP] into [0, 255] mov r2, r0 vld1.32 {d20[0]},[r0],r1 vld1.32 {d20[1]},[r0],r1 vld1.32 {d22[0]},[r0],r1 vld1.32 {d22[1]},[r0] vrshrn.s32 d16, q0, #6 vrshrn.s32 d17, q1, #6 vrshrn.s32 d18, q2, #6 vrshrn.s32 d19, q3, #6 vmovl.u8 q0,d20 vmovl.u8 q1,d22 vadd.s16 q0,q8 vadd.s16 q1,q9 vqmovun.s16 d20,q0 vqmovun.s16 d22,q1 vst1.32 {d20[0]},[r2],r1 vst1.32 {d20[1]},[r2],r1 vst1.32 {d22[0]},[r2],r1 vst1.32 {d22[1]},[r2] WELS_ASM_FUNC_END WELS_ASM_FUNC_BEGIN WelsBlockZero16x16_neon veor q0, q0 veor q1, q1 lsl r1, r1, 1 .rept 16 vst1.64 {q0, q1}, [r0], r1 .endr WELS_ASM_FUNC_END WELS_ASM_FUNC_BEGIN WelsBlockZero8x8_neon veor q0, q0 lsl r1, r1, 1 .rept 8 vst1.64 {q0}, [r0], r1 .endr WELS_ASM_FUNC_END #endif