2 ; Copyright (c) 2010 The WebM project authors. All Rights Reserved.
4 ; Use of this source code is governed by a BSD-style license
5 ; that can be found in the LICENSE file in the root of the source
6 ; tree. An additional intellectual property rights grant can be found
7 ; in the file PATENTS. All contributing project authors may
8 ; be found in the AUTHORS file in the root of the source tree.
11 EXPORT |vp8_subtract_b_neon|
12 EXPORT |vp8_subtract_mby_neon|
13 EXPORT |vp8_subtract_mbuv_neon|
15 INCLUDE asm_enc_offsets.asm
21 AREA ||.text||, CODE, READONLY, ALIGN=2
23 ;void vp8_subtract_b_neon(BLOCK *be, BLOCKD *bd, int pitch)
24 |vp8_subtract_b_neon| PROC
28 ldr r3, [r0, #vp8_block_base_src]
29 ldr r4, [r0, #vp8_block_src]
30 ldr r5, [r0, #vp8_block_src_diff]
32 ldr r6, [r0, #vp8_block_src_stride]
33 add r3, r3, r4 ; src = *base_src + src
34 ldr r7, [r1, #vp8_blockd_predictor]
36 vld1.8 {d0}, [r3], r6 ;load src
37 vld1.8 {d1}, [r7], r2 ;load pred
52 vst1.16 {d20}, [r5], r2 ;store diff
53 vst1.16 {d22}, [r5], r2
54 vst1.16 {d24}, [r5], r2
55 vst1.16 {d26}, [r5], r2
63 ;==========================================
64 ;void vp8_subtract_mby_neon(short *diff, unsigned char *src, int src_stride
65 ; unsigned char *pred, int pred_stride)
66 |vp8_subtract_mby_neon| PROC
69 ldr r4, [sp, #16] ; pred_stride
70 mov r6, #32 ; "diff" stride x2
71 add r5, r0, #16 ; second diff pointer
74 vld1.8 {q0}, [r1], r2 ;load src
75 vld1.8 {q1}, [r3], r4 ;load pred
89 vsubl.u8 q14, d12, d14
90 vsubl.u8 q15, d13, d15
92 vst1.16 {q8}, [r0], r6 ;store diff
93 vst1.16 {q9}, [r5], r6
94 vst1.16 {q10}, [r0], r6
95 vst1.16 {q11}, [r5], r6
96 vst1.16 {q12}, [r0], r6
97 vst1.16 {q13}, [r5], r6
98 vst1.16 {q14}, [r0], r6
99 vst1.16 {q15}, [r5], r6
102 bne subtract_mby_loop
108 ;=================================
109 ;void vp8_subtract_mbuv_c(short *diff, unsigned char *usrc, unsigned char *vsrc,
110 ; int src_stride, unsigned char *upred,
111 ; unsigned char *vpred, int pred_stride)
113 |vp8_subtract_mbuv_neon| PROC
115 ldr r4, [sp, #16] ; upred
116 ldr r5, [sp, #20] ; vpred
117 ldr r6, [sp, #24] ; pred_stride
118 add r0, r0, #512 ; short *udiff = diff + 256;
119 mov r12, #32 ; "diff" stride x2
120 add r7, r0, #16 ; second diff pointer
123 vld1.8 {d0}, [r1], r3 ;load usrc
124 vld1.8 {d1}, [r4], r6 ;load upred
125 vld1.8 {d2}, [r1], r3
126 vld1.8 {d3}, [r4], r6
127 vld1.8 {d4}, [r1], r3
128 vld1.8 {d5}, [r4], r6
129 vld1.8 {d6}, [r1], r3
130 vld1.8 {d7}, [r4], r6
131 vld1.8 {d8}, [r1], r3
132 vld1.8 {d9}, [r4], r6
133 vld1.8 {d10}, [r1], r3
134 vld1.8 {d11}, [r4], r6
135 vld1.8 {d12}, [r1], r3
136 vld1.8 {d13}, [r4], r6
137 vld1.8 {d14}, [r1], r3
138 vld1.8 {d15}, [r4], r6
145 vsubl.u8 q13, d10, d11
146 vsubl.u8 q14, d12, d13
147 vsubl.u8 q15, d14, d15
149 vst1.16 {q8}, [r0], r12 ;store diff
150 vst1.16 {q9}, [r7], r12
151 vst1.16 {q10}, [r0], r12
152 vst1.16 {q11}, [r7], r12
153 vst1.16 {q12}, [r0], r12
154 vst1.16 {q13}, [r7], r12
155 vst1.16 {q14}, [r0], r12
156 vst1.16 {q15}, [r7], r12
159 vld1.8 {d0}, [r2], r3 ;load vsrc
160 vld1.8 {d1}, [r5], r6 ;load vpred
161 vld1.8 {d2}, [r2], r3
162 vld1.8 {d3}, [r5], r6
163 vld1.8 {d4}, [r2], r3
164 vld1.8 {d5}, [r5], r6
165 vld1.8 {d6}, [r2], r3
166 vld1.8 {d7}, [r5], r6
167 vld1.8 {d8}, [r2], r3
168 vld1.8 {d9}, [r5], r6
169 vld1.8 {d10}, [r2], r3
170 vld1.8 {d11}, [r5], r6
171 vld1.8 {d12}, [r2], r3
172 vld1.8 {d13}, [r5], r6
173 vld1.8 {d14}, [r2], r3
174 vld1.8 {d15}, [r5], r6
181 vsubl.u8 q13, d10, d11
182 vsubl.u8 q14, d12, d13
183 vsubl.u8 q15, d14, d15
185 vst1.16 {q8}, [r0], r12 ;store diff
186 vst1.16 {q9}, [r7], r12
187 vst1.16 {q10}, [r0], r12
188 vst1.16 {q11}, [r7], r12
189 vst1.16 {q12}, [r0], r12
190 vst1.16 {q13}, [r7], r12
191 vst1.16 {q14}, [r0], r12
192 vst1.16 {q15}, [r7], r12