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code.delx.au - pulseaudio/blob - src/pulsecore/remap_sse.c
2 This file is part of PulseAudio.
4 Copyright 2004-2006 Lennart Poettering
5 Copyright 2009 Wim Taymans <wim.taymans@collabora.co.uk.com>
7 PulseAudio is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as published
9 by the Free Software Foundation; either version 2.1 of the License,
10 or (at your option) any later version.
12 PulseAudio is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with PulseAudio; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
29 #include <pulse/sample.h>
30 #include <pulsecore/log.h>
31 #include <pulsecore/macro.h>
36 #define LOAD_SAMPLES \
37 " movdqu (%1), %%xmm0 \n\t" \
38 " movdqu 16(%1), %%xmm2 \n\t" \
39 " movdqu 32(%1), %%xmm4 \n\t" \
40 " movdqu 48(%1), %%xmm6 \n\t" \
41 " movdqa %%xmm0, %%xmm1 \n\t" \
42 " movdqa %%xmm2, %%xmm3 \n\t" \
43 " movdqa %%xmm4, %%xmm5 \n\t" \
44 " movdqa %%xmm6, %%xmm7 \n\t"
46 #define UNPACK_SAMPLES(s) \
47 " punpckl"#s" %%xmm0, %%xmm0 \n\t" \
48 " punpckh"#s" %%xmm1, %%xmm1 \n\t" \
49 " punpckl"#s" %%xmm2, %%xmm2 \n\t" \
50 " punpckh"#s" %%xmm3, %%xmm3 \n\t" \
51 " punpckl"#s" %%xmm4, %%xmm4 \n\t" \
52 " punpckh"#s" %%xmm5, %%xmm5 \n\t" \
53 " punpckl"#s" %%xmm6, %%xmm6 \n\t" \
54 " punpckh"#s" %%xmm7, %%xmm7 \n\t"
56 #define STORE_SAMPLES \
57 " movdqu %%xmm0, (%0) \n\t" \
58 " movdqu %%xmm1, 16(%0) \n\t" \
59 " movdqu %%xmm2, 32(%0) \n\t" \
60 " movdqu %%xmm3, 48(%0) \n\t" \
61 " movdqu %%xmm4, 64(%0) \n\t" \
62 " movdqu %%xmm5, 80(%0) \n\t" \
63 " movdqu %%xmm6, 96(%0) \n\t" \
64 " movdqu %%xmm7, 112(%0) \n\t" \
68 #define HANDLE_SINGLE(s) \
69 " movd (%1), %%xmm0 \n\t" \
70 " punpckl"#s" %%xmm0, %%xmm0 \n\t" \
71 " movq %%xmm0, (%0) \n\t" \
75 #define MONO_TO_STEREO(s) \
96 static void remap_mono_to_stereo_sse (pa_remap_t
*m
, void *dst
, const void *src
, unsigned n
) {
100 case PA_SAMPLE_FLOAT32NE
:
102 __asm__
__volatile__ (
103 MONO_TO_STEREO(dq
) /* do doubles to quads */
104 : "+r" (dst
), "+r" (src
), "=&r" (temp
)
105 : "r" ((pa_reg_x86
)n
)
110 case PA_SAMPLE_S16NE
:
112 __asm__
__volatile__ (
113 MONO_TO_STEREO(wd
) /* do words to doubles */
114 : "+r" (dst
), "+r" (src
), "=&r" (temp
)
115 : "r" ((pa_reg_x86
)n
)
121 pa_assert_not_reached();
125 /* set the function that will execute the remapping based on the matrices */
126 static void init_remap_sse (pa_remap_t
*m
) {
129 n_oc
= m
->o_ss
->channels
;
130 n_ic
= m
->i_ss
->channels
;
132 /* find some common channel remappings, fall back to full matrix operation. */
133 if (n_ic
== 1 && n_oc
== 2 &&
134 m
->map_table_f
[0][0] >= 1.0 && m
->map_table_f
[1][0] >= 1.0) {
135 m
->do_remap
= (pa_do_remap_func_t
) remap_mono_to_stereo_sse
;
136 pa_log_info("Using SSE mono to stereo remapping");
140 void pa_remap_func_init_sse (pa_cpu_x86_flag_t flags
) {
141 #if defined (__i386__) || defined (__amd64__)
142 pa_log_info("Initialising SSE optimized remappers.");
144 pa_set_init_remap_func ((pa_init_remap_func_t
) init_remap_sse
);
145 #endif /* defined (__i386__) || defined (__amd64__) */