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
|
/*****************************************************************************
* predict.c: h264 encoder
*****************************************************************************
* Copyright (C) 2007 Guillaume POIRIER
*
* Authors: Guillaume POIRIER <gpoirier CHEZ mplayerhq POIS hu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
#ifdef SYS_LINUX
#include <altivec.h>
#endif
#include "common/common.h"
#include "common/clip1.h"
#include "predict.h"
#include "pixel.h"
#include "ppccommon.h"
static void predict_16x16_p_altivec( uint8_t *src )
{
int16_t a, b, c, i;
int H = 0;
int V = 0;
int16_t i00;
for( i = 1; i <= 8; i++ )
{
H += i * ( src[7+i - FDEC_STRIDE ] - src[7-i - FDEC_STRIDE ] );
V += i * ( src[(7+i)*FDEC_STRIDE -1] - src[(7-i)*FDEC_STRIDE -1] );
}
a = 16 * ( src[15*FDEC_STRIDE -1] + src[15 - FDEC_STRIDE] );
b = ( 5 * H + 32 ) >> 6;
c = ( 5 * V + 32 ) >> 6;
i00 = a - b * 7 - c * 7 + 16;
vect_sshort_u i00_u, b_u, c_u;
i00_u.s[0] = i00;
b_u.s[0] = b;
c_u.s[0] = c;
vec_u16_t val5_v = vec_splat_u16(5);
vec_s16_t i00_v, b_v, c_v;
i00_v = vec_splat(i00_u.v, 0);
b_v = vec_splat(b_u.v, 0);
c_v = vec_splat(c_u.v, 0);
vec_s16_t induc_v = (vec_s16_t) CV(0, 1, 2, 3, 4, 5, 6, 7);
vec_s16_t b8_v = vec_sl(b_v, vec_splat_u16(3));
vec_s32_t mule_b_v = vec_mule(induc_v, b_v);
vec_s32_t mulo_b_v = vec_mulo(induc_v, b_v);
vec_s16_t mul_b_induc0_v = vec_pack(vec_mergeh(mule_b_v, mulo_b_v), vec_mergel(mule_b_v, mulo_b_v));
vec_s16_t add_i0_b_0v = vec_adds(i00_v, mul_b_induc0_v);
vec_s16_t add_i0_b_8v = vec_adds(b8_v, add_i0_b_0v);
int y;
for( y = 0; y < 16; y++ )
{
vec_s16_t shift_0_v = vec_sra(add_i0_b_0v, val5_v);
vec_s16_t shift_8_v = vec_sra(add_i0_b_8v, val5_v);
vec_u8_t com_sat_v = vec_packsu(shift_0_v, shift_8_v);
vec_st( com_sat_v, 0, &src[0]);
src += FDEC_STRIDE;
i00 += c;
add_i0_b_0v = vec_adds(add_i0_b_0v, c_v);
add_i0_b_8v = vec_adds(add_i0_b_8v, c_v);
}
}
/****************************************************************************
* Exported functions:
****************************************************************************/
void x264_predict_16x16_init_altivec( x264_predict_t pf[7] )
{
pf[I_PRED_16x16_P] = predict_16x16_p_altivec;
}
|