2 * Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "libavutil/arm/asm.S"
23 .macro vp6_edge_filter
26 vsubl.u8 q0, d20, d18 @ p[ 0] - p[-s]
27 vsubl.u8 q1, d16, d22 @ p[-2*s] - p[ s]
28 vsubl.u8 q14, d21, d19
29 vsubl.u8 q15, d17, d23
30 vadd.i16 q2, q0, q0 @ 2*(p[0]-p[-s])
31 vadd.i16 d29, d28, d28
32 vadd.i16 q0, q0, q1 @ p[0]-p[-s] + p[-2*s]-p[s]
33 vadd.i16 d28, d28, d30
34 vadd.i16 q0, q0, q2 @ 3*(p[0]-p[-s]) + p[-2*s]-p[s]
35 vadd.i16 d28, d28, d29
36 vrshr.s16 q0, q0, #3 @ v
37 vrshr.s16 d28, d28, #3
38 vsub.i16 q8, q3, q13 @ t-1
40 vshr.s16 q2, q0, #15 @ s
42 vshr.s16 d29, d28, #15
43 vsub.i16 q12, q1, q3 @ V-t
45 vsub.i16 q12, q12, q13 @ V-t-1
46 vsub.i16 d31, d31, d26
47 vcge.u16 q12, q12, q8 @ V-t-1 >= t-1
48 vcge.u16 d31, d31, d16
49 vadd.i16 q13, q3, q3 @ 2*t
51 vsub.i16 q13, q13, q1 @ 2*t - V
52 vsub.i16 d16, d16, d30
53 vadd.i16 q13, q13, q2 @ += s
54 vadd.i16 d16, d16, d29
55 veor q13, q13, q2 @ ^= s
64 vsub.i16 d30, d30, d28
71 function ff_vp6_edge_filter_ver_neon, export=1
72 sub r0, r0, r1, lsl #1
73 vld1.8 {q8}, [r0], r1 @ p[-2*s]
74 vld1.8 {q9}, [r0], r1 @ p[-s]
75 vld1.8 {q10}, [r0], r1 @ p[0]
76 vld1.8 {q11}, [r0] @ p[s]
78 sub r0, r0, r1, lsl #1
81 vst1.32 {d19[0]}, [r0], r1
83 vst1.32 {d21[0]}, [r0]
87 function ff_vp6_edge_filter_hor_neon, export=1
90 vld1.32 {d16[0]}, [r0], r1
91 vld1.32 {d18[0]}, [r0], r1
92 vld1.32 {d20[0]}, [r0], r1
93 vld1.32 {d22[0]}, [r0], r1
94 vld1.32 {d16[1]}, [r0], r1
95 vld1.32 {d18[1]}, [r0], r1
96 vld1.32 {d20[1]}, [r0], r1
97 vld1.32 {d22[1]}, [r0], r1
98 vld1.32 {d17[0]}, [r0], r1
99 vld1.32 {d19[0]}, [r0], r1
100 vld1.32 {d21[0]}, [r0], r1
101 vld1.32 {d23[0]}, [r0], r1
108 vst1.16 {d18[0]}, [r3], r1
109 vst1.16 {d20[0]}, [r3], r1
110 vst1.16 {d18[1]}, [r3], r1
111 vst1.16 {d20[1]}, [r3], r1
112 vst1.16 {d18[2]}, [r3], r1
113 vst1.16 {d20[2]}, [r3], r1
114 vst1.16 {d18[3]}, [r3], r1
115 vst1.16 {d20[3]}, [r3], r1
116 vst1.16 {d19[0]}, [r3], r1
117 vst1.16 {d21[0]}, [r3], r1
118 vst1.16 {d19[1]}, [r3], r1
119 vst1.16 {d21[1]}, [r3], r1