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
|
;******************************************************************************
;* x86 optimized Format Conversion Utils
;* Copyright (c) 2008 Loren Merritt
;*
;* 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
;******************************************************************************
%include "libavutil/x86/x86util.asm"
SECTION .text
;------------------------------------------------------------------------------
; void ff_int32_to_float_fmul_scalar(float *dst, const int32_t *src, float mul,
; int len);
;------------------------------------------------------------------------------
%macro INT32_TO_FLOAT_FMUL_SCALAR 1
%if UNIX64
cglobal int32_to_float_fmul_scalar, 3, 3, %1, dst, src, len
%else
cglobal int32_to_float_fmul_scalar, 4, 4, %1, dst, src, mul, len
%endif
%if WIN64
SWAP 0, 2
%elif ARCH_X86_32
movss m0, mulm
%endif
%if ARCH_X86_64
movsxd lenq, lend
%endif
SPLATD m0
shl lenq, 2
add srcq, lenq
add dstq, lenq
neg lenq
.loop:
%if cpuflag(sse2)
cvtdq2ps m1, [srcq+lenq ]
cvtdq2ps m2, [srcq+lenq+16]
%else
cvtpi2ps m1, [srcq+lenq ]
cvtpi2ps m3, [srcq+lenq+ 8]
cvtpi2ps m2, [srcq+lenq+16]
cvtpi2ps m4, [srcq+lenq+24]
movlhps m1, m3
movlhps m2, m4
%endif
mulps m1, m0
mulps m2, m0
mova [dstq+lenq ], m1
mova [dstq+lenq+16], m2
add lenq, 32
jl .loop
REP_RET
%endmacro
INIT_XMM sse
INT32_TO_FLOAT_FMUL_SCALAR 5
INIT_XMM sse2
INT32_TO_FLOAT_FMUL_SCALAR 3
|
