1/*
2 * Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
3 *
4 * This file is part of FFmpeg.
5 *
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.
10 *
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.
15 *
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
19 */
20
21#include "libavutil/arm/asm.S"
22
23function ff_add_pixels_clamped_armv6, export=1
24        push            {r4-r8,lr}
25        mov             r3,  #8
261:
27        ldm             r0!, {r4,r5,r12,lr}
28        ldrd            r6,  r7,  [r1]
29        pkhbt           r8,  r4,  r5,  lsl #16
30        pkhtb           r5,  r5,  r4,  asr #16
31        pkhbt           r4,  r12, lr,  lsl #16
32        pkhtb           lr,  lr,  r12, asr #16
33        pld             [r1, r2]
34        uxtab16         r8,  r8,  r6
35        uxtab16         r5,  r5,  r6,  ror #8
36        uxtab16         r4,  r4,  r7
37        uxtab16         lr,  lr,  r7,  ror #8
38        usat16          r8,  #8,  r8
39        usat16          r5,  #8,  r5
40        usat16          r4,  #8,  r4
41        usat16          lr,  #8,  lr
42        orr             r6,  r8,  r5,  lsl #8
43        orr             r7,  r4,  lr,  lsl #8
44        subs            r3,  r3,  #1
45        strd_post       r6,  r7,  r1,  r2
46        bgt             1b
47        pop             {r4-r8,pc}
48endfunc
49