2 This file is part of PulseAudio.
4 PulseAudio is free software; you can redistribute it and/or modify
5 it under the terms of the GNU Lesser General Public License as published
6 by the Free Software Foundation; either version 2.1 of the License,
7 or (at your option) any later version.
9 PulseAudio is distributed in the hope that it will be useful, but
10 WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public License
15 along with PulseAudio; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
27 #include <pulse/volume.h>
29 #include <pulsecore/log.h>
30 #include <pulsecore/macro.h>
32 int main(int argc
, char *argv
[]) {
40 if (!getenv("MAKE_CHECK"))
41 pa_log_set_level(PA_LOG_DEBUG
);
43 pa_log("Attenuation of sample 1 against 32767: %g dB", 20.0*log10(1.0/32767.0));
44 pa_log("Smallest possible attenuation > 0 applied to 32767: %li", lrint(32767.0*pa_sw_volume_to_linear(1)));
46 for (v
= PA_VOLUME_MUTED
; v
<= PA_VOLUME_NORM
*2; v
+= 256) {
48 double dB
= pa_sw_volume_to_dB(v
);
49 double f
= pa_sw_volume_to_linear(v
);
51 pa_log_debug("Volume: %3i; percent: %i%%; decibel %0.2f; linear = %0.2f; volume(decibel): %3i; volume(linear): %3i",
52 v
, (v
*100)/PA_VOLUME_NORM
, dB
, f
, pa_sw_volume_from_dB(dB
), pa_sw_volume_from_linear(f
));
55 for (v
= PA_VOLUME_MUTED
; v
<= PA_VOLUME_NORM
*2; v
+= 256) {
56 char s
[PA_CVOLUME_SNPRINT_MAX
], t
[PA_SW_CVOLUME_SNPRINT_DB_MAX
];
58 pa_cvolume_set(&cv
, 2, v
);
60 pa_log_debug("Volume: %3i [%s] [%s]", v
, pa_cvolume_snprint(s
, sizeof(s
), &cv
), pa_sw_cvolume_snprint_dB(t
, sizeof(t
), &cv
));
63 map
.channels
= cv
.channels
= 2;
64 map
.map
[0] = PA_CHANNEL_POSITION_LEFT
;
65 map
.map
[1] = PA_CHANNEL_POSITION_RIGHT
;
67 for (cv
.values
[0] = PA_VOLUME_MUTED
; cv
.values
[0] <= PA_VOLUME_NORM
*2; cv
.values
[0] += 4096)
68 for (cv
.values
[1] = PA_VOLUME_MUTED
; cv
.values
[1] <= PA_VOLUME_NORM
*2; cv
.values
[1] += 4096) {
69 char s
[PA_CVOLUME_SNPRINT_MAX
];
71 pa_log_debug("Volume: [%s]; balance: %2.1f", pa_cvolume_snprint(s
, sizeof(s
), &cv
), pa_cvolume_get_balance(&cv
, &map
));
74 for (cv
.values
[0] = PA_VOLUME_MUTED
+4096; cv
.values
[0] <= PA_VOLUME_NORM
*2; cv
.values
[0] += 4096)
75 for (cv
.values
[1] = PA_VOLUME_MUTED
; cv
.values
[1] <= PA_VOLUME_NORM
*2; cv
.values
[1] += 4096)
76 for (b
= -1.0f
; b
<= 1.0f
; b
+= 0.2f
) {
77 char s
[PA_CVOLUME_SNPRINT_MAX
];
81 pa_log_debug("Before: volume: [%s]; balance: %2.1f", pa_cvolume_snprint(s
, sizeof(s
), &cv
), pa_cvolume_get_balance(&cv
, &map
));
84 pa_cvolume_set_balance(&r
, &map
,b
);
86 k
= pa_cvolume_get_balance(&r
, &map
);
87 pa_log_debug("After: volume: [%s]; balance: %2.1f (intended: %2.1f) %s", pa_cvolume_snprint(s
, sizeof(s
), &r
), k
, b
, k
< b
-.05 || k
> b
+.5 ? "MISMATCH" : "");
90 for (v
= PA_VOLUME_MUTED
; v
<= PA_VOLUME_NORM
*2; v
+= 51) {
92 double l
= pa_sw_volume_to_linear(v
);
93 pa_volume_t k
= pa_sw_volume_from_linear(l
);
94 double db
= pa_sw_volume_to_dB(v
);
95 pa_volume_t r
= pa_sw_volume_from_dB(db
);
101 for (w
= PA_VOLUME_MUTED
; w
< PA_VOLUME_NORM
*2; w
+= 37) {
103 double t
= pa_sw_volume_to_linear(w
);
104 double db2
= pa_sw_volume_to_dB(w
);
105 pa_volume_t p
, p1
, p2
;
108 p
= pa_sw_volume_multiply(v
, w
);
110 p2
= pa_sw_volume_from_dB(qq
);
112 p1
= pa_sw_volume_from_linear(q
);
114 if (p2
> p
&& p2
- p
> md
)
116 if (p2
< p
&& p
- p2
> md
)
118 if (p1
> p
&& p1
- p
> md
)
120 if (p1
< p
&& p
- p1
> md
)
123 if (p1
!= p
|| p2
!= p
)
128 pa_log("max deviation: %lu n=%lu", (unsigned long) md
, (unsigned long) mdn
);
131 pa_assert(mdn
<= 251);