Imported Debian version 2.5.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / arm / lossless_audiodsp_neon.S
1 /*
2 * ARM NEON optimised integer operations
3 * Copyright (c) 2009 Kostya Shishkov
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "libavutil/arm/asm.S"
23
24 @ scalarproduct_and_madd_int16(/*aligned*/v0,v1,v2,order,mul)
25 function ff_scalarproduct_and_madd_int16_neon, export=1
26 vld1.16 {d28[],d29[]}, [sp]
27 vmov.i16 q0, #0
28 vmov.i16 q1, #0
29 vmov.i16 q2, #0
30 vmov.i16 q3, #0
31 mov r12, r0
32
33 1: vld1.16 {d16-d17}, [r0,:128]!
34 vld1.16 {d18-d19}, [r1]!
35 vld1.16 {d20-d21}, [r2]!
36 vld1.16 {d22-d23}, [r0,:128]!
37 vld1.16 {d24-d25}, [r1]!
38 vld1.16 {d26-d27}, [r2]!
39 vmul.s16 q10, q10, q14
40 vmul.s16 q13, q13, q14
41 vmlal.s16 q0, d16, d18
42 vmlal.s16 q1, d17, d19
43 vadd.s16 q10, q8, q10
44 vadd.s16 q13, q11, q13
45 vmlal.s16 q2, d22, d24
46 vmlal.s16 q3, d23, d25
47 vst1.16 {q10}, [r12,:128]!
48 subs r3, r3, #16
49 vst1.16 {q13}, [r12,:128]!
50 bgt 1b
51
52 vpadd.s32 d16, d0, d1
53 vpadd.s32 d17, d2, d3
54 vpadd.s32 d18, d4, d5
55 vpadd.s32 d19, d6, d7
56 vpadd.s32 d0, d16, d17
57 vpadd.s32 d1, d18, d19
58 vpadd.s32 d2, d0, d1
59 vpaddl.s32 d3, d2
60 vmov.32 r0, d3[0]
61 bx lr
62 endfunc