1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
/*
* Copyright (c) 2011 Mans Rullgard <mans@mansr.com>
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_ARM_DCA_H
#define AVCODEC_ARM_DCA_H
#include <stdint.h>
#include "config.h"
#include "libavutil/intmath.h"
#if HAVE_ARMV6 && HAVE_INLINE_ASM
#define decode_blockcode decode_blockcode
static inline int decode_blockcode(int code, int levels, int *values)
{
int v0, v1, v2, v3;
__asm__ ("smmul %4, %8, %11 \n"
"smlabb %8, %4, %10, %8 \n"
"smmul %5, %4, %11 \n"
"sub %8, %8, %9, lsr #1 \n"
"smlabb %4, %5, %10, %4 \n"
"smmul %6, %5, %11 \n"
"str %8, %0 \n"
"sub %4, %4, %9, lsr #1 \n"
"smlabb %5, %6, %10, %5 \n"
"smmul %7, %6, %11 \n"
"str %4, %1 \n"
"sub %5, %5, %9, lsr #1 \n"
"smlabb %6, %7, %10, %6 \n"
"cmp %7, #0 \n"
"str %5, %2 \n"
"sub %6, %6, %9, lsr #1 \n"
"it eq \n"
"mvneq %7, #0 \n"
"str %6, %3 \n"
: "=m"(values[0]), "=m"(values[1]),
"=m"(values[2]), "=m"(values[3]),
"=&r"(v0), "=&r"(v1), "=&r"(v2), "=&r"(v3),
"+&r"(code)
: "r"(levels - 1), "r"(-levels), "r"(ff_inverse[levels])
: "cc");
return v3;
}
#endif
#if HAVE_NEON && HAVE_INLINE_ASM && HAVE_ASM_MOD_Y
#define int8x8_fmul_int32 int8x8_fmul_int32
static inline void int8x8_fmul_int32(float *dst, const int8_t *src, int scale)
{
__asm__ ("vcvt.f32.s32 %2, %2, #4 \n"
"vld1.8 {d0}, [%1,:64] \n"
"vmovl.s8 q0, d0 \n"
"vmovl.s16 q1, d1 \n"
"vmovl.s16 q0, d0 \n"
"vcvt.f32.s32 q0, q0 \n"
"vcvt.f32.s32 q1, q1 \n"
"vmul.f32 q0, q0, %y2 \n"
"vmul.f32 q1, q1, %y2 \n"
"vst1.32 {q0-q1}, [%m0,:128] \n"
: "=Um"(*(float (*)[8])dst)
: "r"(src), "x"(scale)
: "d0", "d1", "d2", "d3");
}
#endif
#endif /* AVCODEC_ARM_DCA_H */
|
