summaryrefslogtreecommitdiffstats
path: root/src/pulsecore/remap_sse.c
blob: bf22df7c43394cc0fc45ad5e15e0c973a6fb282c (plain)
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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
/***
  This file is part of PulseAudio.

  Copyright 2004-2006 Lennart Poettering
  Copyright 2009 Wim Taymans <wim.taymans@collabora.co.uk.com>

  PulseAudio 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.

  PulseAudio 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 Lesser General Public License
  along with PulseAudio; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  USA.
***/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <string.h>

#include <pulse/sample.h>
#include <pulsecore/log.h>
#include <pulsecore/macro.h>

#include "cpu-x86.h"
#include "remap.h"

#define LOAD_SAMPLES                                   \
                " movdqu (%1), %%xmm0           \n\t"  \
                " movdqu 16(%1), %%xmm2         \n\t"  \
                " movdqu 32(%1), %%xmm4         \n\t"  \
                " movdqu 48(%1), %%xmm6         \n\t"  \
                " movdqa %%xmm0, %%xmm1         \n\t"  \
                " movdqa %%xmm2, %%xmm3         \n\t"  \
                " movdqa %%xmm4, %%xmm5         \n\t"  \
                " movdqa %%xmm6, %%xmm7         \n\t"

#define UNPACK_SAMPLES(s)                              \
                " punpckl"#s" %%xmm0, %%xmm0    \n\t"  \
                " punpckh"#s" %%xmm1, %%xmm1    \n\t"  \
                " punpckl"#s" %%xmm2, %%xmm2    \n\t"  \
                " punpckh"#s" %%xmm3, %%xmm3    \n\t"  \
                " punpckl"#s" %%xmm4, %%xmm4    \n\t"  \
                " punpckh"#s" %%xmm5, %%xmm5    \n\t"  \
                " punpckl"#s" %%xmm6, %%xmm6    \n\t"  \
                " punpckh"#s" %%xmm7, %%xmm7    \n\t"

#define STORE_SAMPLES                                  \
                " movdqu %%xmm0, (%0)           \n\t"  \
                " movdqu %%xmm1, 16(%0)         \n\t"  \
                " movdqu %%xmm2, 32(%0)         \n\t"  \
                " movdqu %%xmm3, 48(%0)         \n\t"  \
                " movdqu %%xmm4, 64(%0)         \n\t"  \
                " movdqu %%xmm5, 80(%0)         \n\t"  \
                " movdqu %%xmm6, 96(%0)         \n\t"  \
                " movdqu %%xmm7, 112(%0)        \n\t"  \
                " add $64, %1                   \n\t"  \
                " add $128, %0                  \n\t"

#define HANDLE_SINGLE_dq()                             \
                " movd (%1), %%xmm0             \n\t"  \
                " punpckldq %%xmm0, %%xmm0      \n\t"  \
                " movq %%xmm0, (%0)             \n\t"  \
                " add $4, %1                    \n\t"  \
                " add $8, %0                    \n\t"

#define HANDLE_SINGLE_wd()                             \
                " movw (%1), %w3                \n\t"  \
                " movd %3, %%xmm0               \n\t"  \
                " punpcklwd %%xmm0, %%xmm0      \n\t"  \
                " movd %%xmm0, (%0)             \n\t"  \
                " add $2, %1                    \n\t"  \
                " add $4, %0                    \n\t"

#define MONO_TO_STEREO(s,shift,mask)                   \
                " mov %4, %2                    \n\t"  \
                " sar $"#shift", %2             \n\t"  \
                " cmp $0, %2                    \n\t"  \
                " je 2f                         \n\t"  \
                "1:                             \n\t"  \
                LOAD_SAMPLES                           \
                UNPACK_SAMPLES(s)                      \
                STORE_SAMPLES                          \
                " dec %2                        \n\t"  \
                " jne 1b                        \n\t"  \
                "2:                             \n\t"  \
                " mov %4, %2                    \n\t"  \
                " and $"#mask", %2              \n\t"  \
                " je 4f                         \n\t"  \
                "3:                             \n\t"  \
                HANDLE_SINGLE_##s()                    \
                " dec %2                        \n\t"  \
                " jne 3b                        \n\t"  \
                "4:                             \n\t"

#if defined (__i386__) || defined (__amd64__)
static void remap_mono_to_stereo_sse (pa_remap_t *m, void *dst, const void *src, unsigned n) {
    pa_reg_x86 temp, temp2;

    switch (*m->format) {
        case PA_SAMPLE_FLOAT32NE:
        {
            __asm__ __volatile__ (
                MONO_TO_STEREO(dq, 4, 15) /* do doubles to quads */
                : "+r" (dst), "+r" (src), "=&r" (temp), "=&r" (temp2)
                : "r" ((pa_reg_x86)n)
                : "cc"
            );
            break;
        }
        case PA_SAMPLE_S16NE:
        {
            __asm__ __volatile__ (
                MONO_TO_STEREO(wd, 5, 31) /* do words to doubles */
                : "+r" (dst), "+r" (src), "=&r" (temp), "=&r" (temp2)
                : "r" ((pa_reg_x86)n)
                : "cc"
            );
            break;
        }
        default:
            pa_assert_not_reached();
    }
}

/* set the function that will execute the remapping based on the matrices */
static void init_remap_sse (pa_remap_t *m) {
    unsigned n_oc, n_ic;

    n_oc = m->o_ss->channels;
    n_ic = m->i_ss->channels;

    /* find some common channel remappings, fall back to full matrix operation. */
    if (n_ic == 1 && n_oc == 2 &&
            m->map_table_f[0][0] >= 1.0 && m->map_table_f[1][0] >= 1.0) {
        m->do_remap = (pa_do_remap_func_t) remap_mono_to_stereo_sse;
        pa_log_info("Using SSE mono to stereo remapping");
    }
}
#endif /* defined (__i386__) || defined (__amd64__) */

void pa_remap_func_init_sse (pa_cpu_x86_flag_t flags) {
#if defined (__i386__) || defined (__amd64__)
    pa_log_info("Initialising SSE optimized remappers.");

    pa_set_init_remap_func ((pa_init_remap_func_t) init_remap_sse);
#endif /* defined (__i386__) || defined (__amd64__) */
}