1474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org; 2474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org; Copyright (c) 2011 The WebM project authors. All Rights Reserved. 3474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org; 4474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org; Use of this source code is governed by a BSD-style license 5474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org; that can be found in the LICENSE file in the root of the source 6474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org; tree. An additional intellectual property rights grant can be found 7474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org; in the file PATENTS. All contributing project authors may 8474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org; be found in the AUTHORS file in the root of the source tree. 9474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org; 10474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 11474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 12474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org EXPORT |vp8_fast_quantize_b_neon| 13474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org EXPORT |vp8_fast_quantize_b_pair_neon| 14474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 156fefe538d859300e7febe78271828198c10f1b52fgalligan@chromium.org INCLUDE vp8_asm_enc_offsets.asm 16474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 17474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ARM 18474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org REQUIRE8 19474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org PRESERVE8 20474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 21474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org AREA ||.text||, CODE, READONLY, ALIGN=4 22474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 23474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org;vp8_fast_quantize_b_pair_neon(BLOCK *b1, BLOCK *b2, BLOCKD *d1, BLOCKD *d2); 24474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org|vp8_fast_quantize_b_pair_neon| PROC 25474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 26474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org stmfd sp!, {r4-r9} 27474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vstmdb sp!, {q4-q7} 28474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 29474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldr r4, [r0, #vp8_block_coeff] 30474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldr r5, [r0, #vp8_block_quant_fast] 31474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldr r6, [r0, #vp8_block_round] 32474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 33474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vld1.16 {q0, q1}, [r4@128] ; load z 34474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 35474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldr r7, [r2, #vp8_blockd_qcoeff] 36474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 37474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vabs.s16 q4, q0 ; calculate x = abs(z) 38474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vabs.s16 q5, q1 39474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 40474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ;right shift 15 to get sign, all 0 if it is positive, all 1 if it is negative 41474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vshr.s16 q2, q0, #15 ; sz 42474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vshr.s16 q3, q1, #15 43474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 44474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vld1.s16 {q6, q7}, [r6@128] ; load round_ptr [0-15] 45474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vld1.s16 {q8, q9}, [r5@128] ; load quant_ptr [0-15] 46474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 47474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldr r4, [r1, #vp8_block_coeff] 48474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 49474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vadd.s16 q4, q6 ; x + Round 50474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vadd.s16 q5, q7 51474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 52474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vld1.16 {q0, q1}, [r4@128] ; load z2 53474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 54474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vqdmulh.s16 q4, q8 ; y = ((Round+abs(z)) * Quant) >> 16 55474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vqdmulh.s16 q5, q9 56474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 57474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vabs.s16 q10, q0 ; calculate x2 = abs(z_2) 58474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vabs.s16 q11, q1 59474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vshr.s16 q12, q0, #15 ; sz2 60474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vshr.s16 q13, q1, #15 61474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 62474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ;modify data to have its original sign 63474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org veor.s16 q4, q2 ; y^sz 64474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org veor.s16 q5, q3 65474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 66474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vadd.s16 q10, q6 ; x2 + Round 67474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vadd.s16 q11, q7 68474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 69474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldr r8, [r2, #vp8_blockd_dequant] 70474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 71474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vqdmulh.s16 q10, q8 ; y2 = ((Round+abs(z)) * Quant) >> 16 72474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vqdmulh.s16 q11, q9 73474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 74474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vshr.s16 q4, #1 ; right shift 1 after vqdmulh 75474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vshr.s16 q5, #1 76474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 77474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vld1.s16 {q6, q7}, [r8@128] ;load dequant_ptr[i] 78474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 79474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vsub.s16 q4, q2 ; x1=(y^sz)-sz = (y^sz)-(-1) (2's complement) 80474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vsub.s16 q5, q3 81474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 82474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vshr.s16 q10, #1 ; right shift 1 after vqdmulh 83474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vshr.s16 q11, #1 84474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 85474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldr r9, [r2, #vp8_blockd_dqcoeff] 86474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 87474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org veor.s16 q10, q12 ; y2^sz2 88474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org veor.s16 q11, q13 89474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 90474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vst1.s16 {q4, q5}, [r7] ; store: qcoeff = x1 91474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 92474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 93474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vsub.s16 q10, q12 ; x2=(y^sz)-sz = (y^sz)-(-1) (2's complement) 94474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vsub.s16 q11, q13 95474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 96474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldr r6, [r3, #vp8_blockd_qcoeff] 97474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 98474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmul.s16 q2, q6, q4 ; x * Dequant 99474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmul.s16 q3, q7, q5 100474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1015c1d3b27608a3f3f6028c069b9bf066a4de474b6hclam@chromium.org adr r0, inv_zig_zag ; load ptr of inverse zigzag table 102474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 103474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vceq.s16 q8, q8 ; set q8 to all 1 104474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 105474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vst1.s16 {q10, q11}, [r6] ; store: qcoeff = x2 106474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 107474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmul.s16 q12, q6, q10 ; x2 * Dequant 108474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmul.s16 q13, q7, q11 109474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 110474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vld1.16 {q6, q7}, [r0@128] ; load inverse scan order 111474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 112474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vtst.16 q14, q4, q8 ; now find eob 113474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vtst.16 q15, q5, q8 ; non-zero element is set to all 1 114474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 115474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vst1.s16 {q2, q3}, [r9] ; store dqcoeff = x * Dequant 116474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 117474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldr r7, [r3, #vp8_blockd_dqcoeff] 118474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 119474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vand q0, q6, q14 ; get all valid numbers from scan array 120474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vand q1, q7, q15 121474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 122474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vst1.s16 {q12, q13}, [r7] ; store dqcoeff = x * Dequant 123474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 124474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vtst.16 q2, q10, q8 ; now find eob 125474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vtst.16 q3, q11, q8 ; non-zero element is set to all 1 126474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 127474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmax.u16 q0, q0, q1 ; find maximum value in q0, q1 128474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 129474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vand q10, q6, q2 ; get all valid numbers from scan array 130474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vand q11, q7, q3 131474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmax.u16 q10, q10, q11 ; find maximum value in q10, q11 132474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 133474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmax.u16 d0, d0, d1 134474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmax.u16 d20, d20, d21 135474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmovl.u16 q0, d0 136474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmovl.u16 q10, d20 137474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 138474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmax.u32 d0, d0, d1 139474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmax.u32 d20, d20, d21 140474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vpmax.u32 d0, d0, d0 141474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vpmax.u32 d20, d20, d20 142474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 143167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org ldr r4, [r2, #vp8_blockd_eob] 144167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org ldr r5, [r3, #vp8_blockd_eob] 145474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 146167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org vst1.8 {d0[0]}, [r4] ; store eob 147167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org vst1.8 {d20[0]}, [r5] ; store eob 148474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 149474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vldmia sp!, {q4-q7} 150474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldmfd sp!, {r4-r9} 151474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org bx lr 152474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 153474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ENDP 154474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 155474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org;void vp8_fast_quantize_b_c(BLOCK *b, BLOCKD *d) 156474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org|vp8_fast_quantize_b_neon| PROC 157474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 158474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org stmfd sp!, {r4-r7} 159474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 160474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldr r3, [r0, #vp8_block_coeff] 161474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldr r4, [r0, #vp8_block_quant_fast] 162474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldr r5, [r0, #vp8_block_round] 163474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 164474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vld1.16 {q0, q1}, [r3@128] ; load z 165474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vorr.s16 q14, q0, q1 ; check if all zero (step 1) 166474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldr r6, [r1, #vp8_blockd_qcoeff] 167474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldr r7, [r1, #vp8_blockd_dqcoeff] 168474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vorr.s16 d28, d28, d29 ; check if all zero (step 2) 169474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 170474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vabs.s16 q12, q0 ; calculate x = abs(z) 171474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vabs.s16 q13, q1 172474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 173474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ;right shift 15 to get sign, all 0 if it is positive, all 1 if it is negative 174474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vshr.s16 q2, q0, #15 ; sz 175474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmov r2, r3, d28 ; check if all zero (step 3) 176474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vshr.s16 q3, q1, #15 177474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 178474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vld1.s16 {q14, q15}, [r5@128]; load round_ptr [0-15] 179474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vld1.s16 {q8, q9}, [r4@128] ; load quant_ptr [0-15] 180474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 181474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vadd.s16 q12, q14 ; x + Round 182474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vadd.s16 q13, q15 183474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 1845c1d3b27608a3f3f6028c069b9bf066a4de474b6hclam@chromium.org adr r0, inv_zig_zag ; load ptr of inverse zigzag table 185474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 186474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vqdmulh.s16 q12, q8 ; y = ((Round+abs(z)) * Quant) >> 16 187474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vqdmulh.s16 q13, q9 188474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 189474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vld1.16 {q10, q11}, [r0@128]; load inverse scan order 190474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 191474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vceq.s16 q8, q8 ; set q8 to all 1 192474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 193474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldr r4, [r1, #vp8_blockd_dequant] 194474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 195474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vshr.s16 q12, #1 ; right shift 1 after vqdmulh 196474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vshr.s16 q13, #1 197474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 198167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org ldr r5, [r1, #vp8_blockd_eob] 199167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org 200474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org orr r2, r2, r3 ; check if all zero (step 4) 201474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org cmp r2, #0 ; check if all zero (step 5) 202474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org beq zero_output ; check if all zero (step 6) 203474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 204474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ;modify data to have its original sign 205474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org veor.s16 q12, q2 ; y^sz 206474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org veor.s16 q13, q3 207474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 208474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vsub.s16 q12, q2 ; x1=(y^sz)-sz = (y^sz)-(-1) (2's complement) 209474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vsub.s16 q13, q3 210474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 211474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vld1.s16 {q2, q3}, [r4@128] ; load dequant_ptr[i] 212474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 213474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vtst.16 q14, q12, q8 ; now find eob 214474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vtst.16 q15, q13, q8 ; non-zero element is set to all 1 215474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 216474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vst1.s16 {q12, q13}, [r6@128]; store: qcoeff = x1 217474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 218474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vand q10, q10, q14 ; get all valid numbers from scan array 219474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vand q11, q11, q15 220474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 221474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 222474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmax.u16 q0, q10, q11 ; find maximum value in q0, q1 223474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmax.u16 d0, d0, d1 224474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmovl.u16 q0, d0 225474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 226474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmul.s16 q2, q12 ; x * Dequant 227474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmul.s16 q3, q13 228474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 229474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vmax.u32 d0, d0, d1 230474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vpmax.u32 d0, d0, d0 231474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 232474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vst1.s16 {q2, q3}, [r7@128] ; store dqcoeff = x * Dequant 233474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 234167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org vst1.8 {d0[0]}, [r5] ; store eob 235474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 236474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldmfd sp!, {r4-r7} 237474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org bx lr 238474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 239474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orgzero_output 240167514562bbce1eb0566271d6cb41d90d2b5ffa0hclam@chromium.org strb r2, [r5] ; store eob 241474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vst1.s16 {q0, q1}, [r6@128] ; qcoeff = 0 242474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org vst1.s16 {q0, q1}, [r7@128] ; dqcoeff = 0 243474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 244474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ldmfd sp!, {r4-r7} 245474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org bx lr 246474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 247474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ENDP 248474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 249474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org; default inverse zigzag table is defined in vp8/common/entropy.c 250474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org ALIGN 16 ; enable use of @128 bit aligned loads 251474eb7536515fb785e925cc9375d22817c416851hclam@chromium.orginv_zig_zag 252474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org DCW 0x0001, 0x0002, 0x0006, 0x0007 253474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org DCW 0x0003, 0x0005, 0x0008, 0x000d 254474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org DCW 0x0004, 0x0009, 0x000c, 0x000e 255474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org DCW 0x000a, 0x000b, 0x000f, 0x0010 256474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 257474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org END 258474eb7536515fb785e925cc9375d22817c416851hclam@chromium.org 259