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
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
/*
* Copyright (c) 2010 Mans Rullgard
* Copyright (c) 2014 James Yu <james.yu@linaro.org>
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <arm_neon.h>
#include "config.h"
#include "libavutil/cpu.h"
#if ARCH_AARCH64
# include "libavutil/aarch64/cpu.h"
#elif ARCH_ARM
# include "libavutil/arm/cpu.h"
#endif
#include "libavcodec/mpegvideo.h"
static void inline ff_dct_unquantize_h263_neon(int qscale, int qadd, int nCoeffs,
int16_t *block)
{
int16x8_t q0s16, q2s16, q3s16, q8s16, q10s16, q11s16, q13s16;
int16x8_t q14s16, q15s16, qzs16;
int16x4_t d0s16, d2s16, d3s16, dzs16;
uint16x8_t q1u16, q9u16;
uint16x4_t d1u16;
dzs16 = vdup_n_s16(0);
qzs16 = vdupq_n_s16(0);
q15s16 = vdupq_n_s16(qscale << 1);
q14s16 = vdupq_n_s16(qadd);
q13s16 = vnegq_s16(q14s16);
if (nCoeffs > 4) {
for (; nCoeffs > 8; nCoeffs -= 16, block += 16) {
q0s16 = vld1q_s16(block);
q3s16 = vreinterpretq_s16_u16(vcltq_s16(q0s16, qzs16));
q8s16 = vld1q_s16(block + 8);
q1u16 = vceqq_s16(q0s16, qzs16);
q2s16 = vmulq_s16(q0s16, q15s16);
q11s16 = vreinterpretq_s16_u16(vcltq_s16(q8s16, qzs16));
q10s16 = vmulq_s16(q8s16, q15s16);
q3s16 = vbslq_s16(vreinterpretq_u16_s16(q3s16), q13s16, q14s16);
q11s16 = vbslq_s16(vreinterpretq_u16_s16(q11s16), q13s16, q14s16);
q2s16 = vaddq_s16(q2s16, q3s16);
q9u16 = vceqq_s16(q8s16, qzs16);
q10s16 = vaddq_s16(q10s16, q11s16);
q0s16 = vbslq_s16(q1u16, q0s16, q2s16);
q8s16 = vbslq_s16(q9u16, q8s16, q10s16);
vst1q_s16(block, q0s16);
vst1q_s16(block + 8, q8s16);
}
}
if (nCoeffs <= 0)
return;
d0s16 = vld1_s16(block);
d3s16 = vreinterpret_s16_u16(vclt_s16(d0s16, dzs16));
d1u16 = vceq_s16(d0s16, dzs16);
d2s16 = vmul_s16(d0s16, vget_high_s16(q15s16));
d3s16 = vbsl_s16(vreinterpret_u16_s16(d3s16),
vget_high_s16(q13s16), vget_high_s16(q14s16));
d2s16 = vadd_s16(d2s16, d3s16);
d0s16 = vbsl_s16(d1u16, d0s16, d2s16);
vst1_s16(block, d0s16);
}
static void dct_unquantize_h263_inter_neon(MpegEncContext *s, int16_t *block,
int n, int qscale)
{
int nCoeffs = s->inter_scantable.raster_end[s->block_last_index[n]];
int qadd = (qscale - 1) | 1;
ff_dct_unquantize_h263_neon(qscale, qadd, nCoeffs + 1, block);
}
static void dct_unquantize_h263_intra_neon(MpegEncContext *s, int16_t *block,
int n, int qscale)
{
int qadd;
int nCoeffs, blk0;
if (!s->h263_aic) {
if (n < 4)
block[0] *= s->y_dc_scale;
else
block[0] *= s->c_dc_scale;
qadd = (qscale - 1) | 1;
} else {
qadd = 0;
}
if (s->ac_pred) {
nCoeffs = 63;
} else {
nCoeffs = s->inter_scantable.raster_end[s->block_last_index[n]];
if (nCoeffs <= 0)
return;
}
blk0 = block[0];
ff_dct_unquantize_h263_neon(qscale, qadd, nCoeffs + 1, block);
block[0] = blk0;
}
av_cold void ff_MPV_common_init_neon(MpegEncContext *s)
{
int cpu_flags = av_get_cpu_flags();
if (have_neon(cpu_flags)) {
s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_neon;
s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_neon;
}
}
|
