10d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@/***************************************************************************** 20d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@* 30d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore 40d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@* 50d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@* Licensed under the Apache License, Version 2.0 (the "License"); 60d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@* you may not use this file except in compliance with the License. 70d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@* You may obtain a copy of the License at: 80d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@* 90d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@* http://www.apache.org/licenses/LICENSE-2.0 100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@* 110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@* Unless required by applicable law or agreed to in writing, software 120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@* distributed under the License is distributed on an "AS IS" BASIS, 130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@* See the License for the specific language governing permissions and 150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@* limitations under the License. 160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@* 170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@*****************************************************************************/ 180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@/** 190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ ******************************************************************************* 200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @file 210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * ihevc_itrans_recon_4x4_neon.s 220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @brief 240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * contains function definitions for single stage inverse transform 250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @author 270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * naveen sr 280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @par list of functions: 300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * - ihevc_itrans_recon_4x4() 310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @remarks 330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * none 340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ ******************************************************************************* 360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@*/ 370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ /** 380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ ******************************************************************************* 390d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 400d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @brief 410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * this function performs inverse transform and reconstruction for 4x4 420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * input block 430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @par description: 450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * performs inverse transform and adds the prediction data and clips output 460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * to 8 bit 470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @param[in] pi2_src 490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * input 4x4 coefficients 500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @param[in] pi2_tmp 520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * temporary 4x4 buffer for storing inverse 530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * transform 550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 1st stage output 560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @param[in] pu1_pred 580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * prediction 4x4 block 590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @param[out] pu1_dst 610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * output 4x4 block 620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @param[in] src_strd 640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * input stride 650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @param[in] pred_strd 670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * prediction stride 680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @param[in] dst_strd 700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * output stride 710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @param[in] shift 730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * output shift 740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @param[in] zero_cols 760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * zero columns in pi2_src 770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @returns void 790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * @remarks 810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * none 820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ * 830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ ******************************************************************************* 840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ */ 850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@void ihevc_itrans_recon_4x4(word16 *pi2_src, 860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ word16 *pi2_tmp, 870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ uword8 *pu1_pred, 880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ uword8 *pu1_dst, 890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ word32 src_strd, 900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ word32 pred_strd, 910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ word32 dst_strd, 920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ word32 zero_cols) 930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@**************variables vs registers************************* 940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ r0 => *pi2_src 950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ r1 => *pi2_tmp 960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ r2 => *pu1_pred 970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ r3 => *pu1_dst 980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ r4 => src_strd 990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ r5 => pred_strd 1000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ r6 => dst_strd 1010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar@ r7 => zero_cols 1020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 103a47cb8865a33a87f163d87781f417884d30d46edRakesh Kumar.equ src_strd_offset, 104 104a47cb8865a33a87f163d87781f417884d30d46edRakesh Kumar.equ pred_strd_offset, 108 105a47cb8865a33a87f163d87781f417884d30d46edRakesh Kumar.equ dst_strd_offset, 112 106a47cb8865a33a87f163d87781f417884d30d46edRakesh Kumar.equ zero_cols_offset, 116 1070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar.text 1090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar.align 4 1100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar.set shift_stage1_idct , 7 1130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar.set shift_stage2_idct , 12 1140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar.globl ihevc_itrans_recon_4x4_a9q 1180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar.extern g_ai2_ihevc_trans_4_transpose 1200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakarg_ai2_ihevc_trans_4_transpose_addr: 1220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar.long g_ai2_ihevc_trans_4_transpose - ulbl1 - 8 1230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar.type ihevc_itrans_recon_4x4_a9q, %function 1250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakarihevc_itrans_recon_4x4_a9q: 1270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar stmfd sp!, {r4-r12, r14} @stack stores the values of the arguments 129a47cb8865a33a87f163d87781f417884d30d46edRakesh Kumar vpush {d8 - d15} 1300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1310d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ldr r8,g_ai2_ihevc_trans_4_transpose_addr 1320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakarulbl1: 1330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add r8,r8,pc 1340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 135a47cb8865a33a87f163d87781f417884d30d46edRakesh Kumar ldr r4,[sp,#src_strd_offset] @loading src_strd 136a47cb8865a33a87f163d87781f417884d30d46edRakesh Kumar ldr r5,[sp,#pred_strd_offset] @loading pred_strd 1370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add r4,r4,r4 @ src_strd in terms of word16 1380d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 139a47cb8865a33a87f163d87781f417884d30d46edRakesh Kumar ldr r6,[sp,#dst_strd_offset] @loading dst_strd 140a47cb8865a33a87f163d87781f417884d30d46edRakesh Kumar ldr r7,[sp,#zero_cols_offset] @loading zero_cols 1410d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add r9,r0,r4 @ pi2_src[0] + src_strd 1420d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1430d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1440d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1450d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vld1.16 d4,[r8] @loading first row of g_ai2_ihevc_trans_4_transpose 1460d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar @ d4 = {36,64,83,64} 1470d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar @index = 3 2 1 0 1480d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add r10,r9,r4, lsl #1 @ 3*src_strd 1490d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar add r4,r4,r4 1500d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vld1.16 d1,[r9] @loading pi2_src 2nd row 1510d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vld1.16 d3,[r10] @loading pi2_src 4th row 1520d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vld1.16 d0,[r0],r4 @loading pi2_src 1st row 1530d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vld1.16 d2,[r0],r4 @loading pi2_src 3rd row 1540d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1550d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1560d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar @ first stage computation starts 1570d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vmull.s16 q3,d1,d4[1] @83 * pi2_src[1] 1580d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vmlal.s16 q3,d3,d4[3] @o[0] = 83 * pi2_src[1] + 36 * pi2_src[3] 1590d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vmull.s16 q4,d1,d4[3] @36 * pi2_src[1] 1600d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vld1.32 d22[0], [r2],r5 1610d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vmlsl.s16 q4,d3,d4[1] @o[1] = 36 * pi2_src[1] - 83 * pi2_src[3] 1620d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1630d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vaddl.s16 q5,d0,d2 @pi2_src[0] + pi2_src[2] 1640d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vsubl.s16 q6,d0,d2 @pi2_src[0] - pi2_src[2] 1650d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vshl.s32 q5,q5,#6 @e[0] = 64*(pi2_src[0] + pi2_src[2]) 1660d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vshl.s32 q6,q6,#6 @e[1] = 64*(pi2_src[0] - pi2_src[2]) 1670d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1680d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vadd.s32 q7,q5,q3 @((e[0] + o[0] ) 1690d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vadd.s32 q8,q6,q4 @((e[1] + o[1]) 1700d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vsub.s32 q9,q6,q4 @((e[1] - o[1]) 1710d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vsub.s32 q10,q5,q3 @((e[0] - o[0]) 1720d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1730d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vqrshrn.s32 d0,q7,#shift_stage1_idct @pi2_out[0] = clip_s16((e[0] + o[0] + add)>>shift) ) 1740d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vqrshrn.s32 d1,q8,#shift_stage1_idct @pi2_out[1] = clip_s16((e[1] + o[1] + add)>>shift) ) 1750d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vqrshrn.s32 d2,q9,#shift_stage1_idct @pi2_out[2] = clip_s16((e[0] - o[0] + add)>>shift) ) 1760d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vqrshrn.s32 d3,q10,#shift_stage1_idct @pi2_out[3] = clip_s16((e[0] - o[0] + add)>>shift) ) 1770d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1780d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vtrn.16 d0,d1 1790d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vtrn.16 d2,d3 1800d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vtrn.32 d0,d2 1810d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vtrn.32 d1,d3 1820d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1830d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar @ first stage ends 1840d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar @ output in d0,d1,d2,d3 1850d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar @ second stage starts 1860d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vmull.s16 q3,d1,d4[1] @83 * pi2_src[1] 1870d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vld1.32 d22[1], [r2],r5 1880d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vmlal.s16 q3,d3,d4[3] @o[0] = 83 * pi2_src[1] + 36 * pi2_src[3] 1890d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vmull.s16 q4,d1,d4[3] @36 * pi2_src[1] 1900d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vmlsl.s16 q4,d3,d4[1] @o[1] = 36 * pi2_src[1] - 83 * pi2_src[3] 1910d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vld1.32 d23[0], [r2],r5 1920d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1930d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vaddl.s16 q5,d0,d2 @pi2_src[0] + pi2_src[2] 1940d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vsubl.s16 q6,d0,d2 @pi2_src[0] - pi2_src[2] 1950d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vshl.s32 q5,q5,#6 @e[0] = 64*(pi2_src[0] + pi2_src[2]) 1960d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vshl.s32 q6,q6,#6 @e[1] = 64*(pi2_src[0] - pi2_src[2]) 1970d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1980d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 1990d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vadd.s32 q7,q5,q3 @((e[0] + o[0] ) 2000d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vadd.s32 q8,q6,q4 @((e[1] + o[1]) 2010d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vsub.s32 q9,q6,q4 @((e[1] - o[1]) 2020d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vsub.s32 q10,q5,q3 @((e[0] - o[0]) 2030d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2040d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vqrshrn.s32 d0,q7,#shift_stage2_idct @pi2_out[0] = clip_s16((e[0] + o[0] + add)>>shift) ) 2050d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vqrshrn.s32 d1,q8,#shift_stage2_idct @pi2_out[1] = clip_s16((e[1] + o[1] + add)>>shift) ) 2060d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vqrshrn.s32 d2,q9,#shift_stage2_idct @pi2_out[2] = clip_s16((e[0] - o[0] + add)>>shift) ) 2070d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vqrshrn.s32 d3,q10,#shift_stage2_idct @pi2_out[3] = clip_s16((e[0] - o[0] + add)>>shift) ) 2080d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vld1.32 d23[1], [r2],r5 2090d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2100d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vtrn.16 d0,d1 2110d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vtrn.16 d2,d3 2120d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vtrn.32 d0,d2 2130d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vtrn.32 d1,d3 2140d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar @ second stage ends 2150d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar @ output in d0,d1,d2,d3 2160d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar @ second stage computation ends 2170d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2180d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar @ loading pred 2190d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2200d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vaddw.u8 q0,q0,d22 @ pi2_out(16bit) + pu1_pred(8bit) 2210d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vaddw.u8 q1,q1,d23 @ pi2_out(16bit) + pu1_pred(8bit) 2220d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vqmovun.s16 d0,q0 @ clip_u8(pi2_out(16bit) + pu1_pred(8bit)) 2230d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vqmovun.s16 d1,q1 @ clip_u8(pi2_out(16bit) + pu1_pred(8bit)) 2240d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2250d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar @ storing destination 2260d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vst1.32 {d0[0]},[r3],r6 2270d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vst1.32 {d0[1]},[r3],r6 2280d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vst1.32 {d1[0]},[r3],r6 2290d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar vst1.32 {d1[1]},[r3],r6 2300d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 231a47cb8865a33a87f163d87781f417884d30d46edRakesh Kumar vpop {d8 - d15} 2320d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar ldmfd sp!,{r4-r12,r15} @reload the registers from sp 2330d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2340d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2350d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2360d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 2370d8951cef4b1a1dbf4ff5ba3e8796cf1d4503098Harish Mahendrakar 238