+/***
+ This file is part of PulseAudio.
+
+ 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 <stdio.h>
+#include <math.h>
#include <pulse/volume.h>
-#include <pulse/gccmacro.h>
+
+#include <pulsecore/log.h>
+#include <pulsecore/macro.h>
int main(int argc, char *argv[]) {
pa_volume_t v;
pa_cvolume cv;
+ float b;
+ pa_channel_map map;
+ pa_volume_t md = 0;
+ unsigned mdn = 0;
+
+ if (!getenv("MAKE_CHECK"))
+ pa_log_set_level(PA_LOG_DEBUG);
+
+ pa_log("Attenuation of sample 1 against 32767: %g dB", 20.0*log10(1.0/32767.0));
+ pa_log("Smallest possible attenuation > 0 applied to 32767: %li", lrint(32767.0*pa_sw_volume_to_linear(1)));
for (v = PA_VOLUME_MUTED; v <= PA_VOLUME_NORM*2; v += 256) {
double dB = pa_sw_volume_to_dB(v);
double f = pa_sw_volume_to_linear(v);
- printf("Volume: %3i; percent: %i%%; decibel %0.2f; linear = %0.2f; volume(decibel): %3i; volume(linear): %3i\n",
+ pa_log_debug("Volume: %3i; percent: %i%%; decibel %0.2f; linear = %0.2f; volume(decibel): %3i; volume(linear): %3i",
v, (v*100)/PA_VOLUME_NORM, dB, f, pa_sw_volume_from_dB(dB), pa_sw_volume_from_linear(f));
}
for (v = PA_VOLUME_MUTED; v <= PA_VOLUME_NORM*2; v += 256) {
- char s[PA_CVOLUME_SNPRINT_MAX], t[PA_CVOLUME_SNPRINT_DB_MAX];
+ char s[PA_CVOLUME_SNPRINT_MAX], t[PA_SW_CVOLUME_SNPRINT_DB_MAX];
pa_cvolume_set(&cv, 2, v);
- printf("Volume: %3i [%s] [%s]\n",
- v,
- pa_cvolume_snprint(s, sizeof(s), &cv),
- pa_cvolume_snprint_dB(t, sizeof(t), &cv));
+ pa_log_debug("Volume: %3i [%s] [%s]", v, pa_cvolume_snprint(s, sizeof(s), &cv), pa_sw_cvolume_snprint_dB(t, sizeof(t), &cv));
+ }
+
+ map.channels = cv.channels = 2;
+ map.map[0] = PA_CHANNEL_POSITION_LEFT;
+ map.map[1] = PA_CHANNEL_POSITION_RIGHT;
+
+ for (cv.values[0] = PA_VOLUME_MUTED; cv.values[0] <= PA_VOLUME_NORM*2; cv.values[0] += 4096)
+ for (cv.values[1] = PA_VOLUME_MUTED; cv.values[1] <= PA_VOLUME_NORM*2; cv.values[1] += 4096) {
+ char s[PA_CVOLUME_SNPRINT_MAX];
+
+ pa_log_debug("Volume: [%s]; balance: %2.1f", pa_cvolume_snprint(s, sizeof(s), &cv), pa_cvolume_get_balance(&cv, &map));
+ }
+
+ for (cv.values[0] = PA_VOLUME_MUTED+4096; cv.values[0] <= PA_VOLUME_NORM*2; cv.values[0] += 4096)
+ for (cv.values[1] = PA_VOLUME_MUTED; cv.values[1] <= PA_VOLUME_NORM*2; cv.values[1] += 4096)
+ for (b = -1.0f; b <= 1.0f; b += 0.2f) {
+ char s[PA_CVOLUME_SNPRINT_MAX];
+ pa_cvolume r;
+ float k;
+ pa_log_debug("Before: volume: [%s]; balance: %2.1f", pa_cvolume_snprint(s, sizeof(s), &cv), pa_cvolume_get_balance(&cv, &map));
+
+ r = cv;
+ pa_cvolume_set_balance(&r, &map,b);
+
+ k = pa_cvolume_get_balance(&r, &map);
+ 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" : "");
+ }
+
+ for (v = PA_VOLUME_MUTED; v <= PA_VOLUME_NORM*2; v += 51) {
+
+ double l = pa_sw_volume_to_linear(v);
+ pa_volume_t k = pa_sw_volume_from_linear(l);
+ double db = pa_sw_volume_to_dB(v);
+ pa_volume_t r = pa_sw_volume_from_dB(db);
+ pa_volume_t w;
+
+ pa_assert(k == v);
+ pa_assert(r == v);
+
+ for (w = PA_VOLUME_MUTED; w < PA_VOLUME_NORM*2; w += 37) {
+
+ double t = pa_sw_volume_to_linear(w);
+ double db2 = pa_sw_volume_to_dB(w);
+ pa_volume_t p, p1, p2;
+ double q, qq;
+
+ p = pa_sw_volume_multiply(v, w);
+ qq = db + db2;
+ p2 = pa_sw_volume_from_dB(qq);
+ q = l*t;
+ p1 = pa_sw_volume_from_linear(q);
+
+ if (p2 > p && p2 - p > md)
+ md = p2 - p;
+ if (p2 < p && p - p2 > md)
+ md = p - p2;
+ if (p1 > p && p1 - p > md)
+ md = p1 - p;
+ if (p1 < p && p - p1 > md)
+ md = p - p1;
+
+ if (p1 != p || p2 != p)
+ mdn++;
+ }
}
+ pa_log("max deviation: %lu n=%lu", (unsigned long) md, (unsigned long) mdn);
+
+ pa_assert(md <= 1);
+ pa_assert(mdn <= 251);
+
return 0;
}