]>
code.delx.au - pulseaudio/blob - src/pulsecore/remap_mmx.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 " movq (%1), %%mm0 \n\t" \
38 " movq 8(%1), %%mm2 \n\t" \
39 " movq 16(%1), %%mm4 \n\t" \
40 " movq 24(%1), %%mm6 \n\t" \
41 " movq %%mm0, %%mm1 \n\t" \
42 " movq %%mm2, %%mm3 \n\t" \
43 " movq %%mm4, %%mm5 \n\t" \
44 " movq %%mm6, %%mm7 \n\t"
46 #define UNPACK_SAMPLES(s) \
47 " punpckl"#s" %%mm0, %%mm0 \n\t" \
48 " punpckh"#s" %%mm1, %%mm1 \n\t" \
49 " punpckl"#s" %%mm2, %%mm2 \n\t" \
50 " punpckh"#s" %%mm3, %%mm3 \n\t" \
51 " punpckl"#s" %%mm4, %%mm4 \n\t" \
52 " punpckh"#s" %%mm5, %%mm5 \n\t" \
53 " punpckl"#s" %%mm6, %%mm6 \n\t" \
54 " punpckh"#s" %%mm7, %%mm7 \n\t" \
56 #define STORE_SAMPLES \
57 " movq %%mm0, (%0) \n\t" \
58 " movq %%mm1, 8(%0) \n\t" \
59 " movq %%mm2, 16(%0) \n\t" \
60 " movq %%mm3, 24(%0) \n\t" \
61 " movq %%mm4, 32(%0) \n\t" \
62 " movq %%mm5, 40(%0) \n\t" \
63 " movq %%mm6, 48(%0) \n\t" \
64 " movq %%mm7, 56(%0) \n\t" \
68 #define HANDLE_SINGLE(s) \
69 " movd (%1), %%mm0 \n\t" \
70 " movq %%mm0, %%mm1 \n\t" \
71 " punpckl"#s" %%mm0, %%mm0 \n\t" \
72 " movq %%mm0, (%0) \n\t" \
76 #define MONO_TO_STEREO(s) \
98 static void remap_mono_to_stereo_mmx (pa_remap_t
*m
, void *dst
, const void *src
, unsigned n
) {
101 switch (*m
->format
) {
102 case PA_SAMPLE_FLOAT32NE
:
104 __asm__
__volatile__ (
105 MONO_TO_STEREO(dq
) /* do doubles to quads */
106 : "+r" (dst
), "+r" (src
), "=&r" (temp
)
107 : "r" ((pa_reg_x86
)n
)
112 case PA_SAMPLE_S16NE
:
114 __asm__
__volatile__ (
115 MONO_TO_STEREO(wd
) /* do words to doubles */
116 : "+r" (dst
), "+r" (src
), "=&r" (temp
)
117 : "r" ((pa_reg_x86
)n
)
123 pa_assert_not_reached();
127 /* set the function that will execute the remapping based on the matrices */
128 static void init_remap_mmx (pa_remap_t
*m
) {
131 n_oc
= m
->o_ss
->channels
;
132 n_ic
= m
->i_ss
->channels
;
134 /* find some common channel remappings, fall back to full matrix operation. */
135 if (n_ic
== 1 && n_oc
== 2 &&
136 m
->map_table_f
[0][0] >= 1.0 && m
->map_table_f
[1][0] >= 1.0) {
137 m
->do_remap
= (pa_do_remap_func_t
) remap_mono_to_stereo_mmx
;
138 pa_log_info("Using MMX mono to stereo remapping");
142 void pa_remap_func_init_mmx (pa_cpu_x86_flag_t flags
) {
143 #if defined (__i386__) || defined (__amd64__)
144 pa_log_info("Initialising MMX optimized remappers.");
146 pa_set_init_remap_func ((pa_init_remap_func_t
) init_remap_mmx
);
147 #endif /* defined (__i386__) || defined (__amd64__) */