int main(PA_GCC_UNUSED int argc, PA_GCC_UNUSED char *argv[]) {
pa_volume_t v;
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",
v, (v*100)/PA_VOLUME_NORM, dB, f, pa_sw_volume_from_dB(dB), pa_sw_volume_from_linear(f));
}
return 0;
}
char *pa_sw_volume_snprint_dB(char *s, size_t l, pa_volume_t v) {
double f;
pa_assert(s);
pa_assert(l > 0);
pa_init_i18n();
if (!PA_VOLUME_IS_VALID(v)) {
pa_snprintf(s, l, _("(invalid)"));
return s;
}
f = pa_sw_volume_to_dB(v);
pa_snprintf(s, l, "%0.2f dB", isinf(f) < 0 || f <= PA_DECIBEL_MININFTY ? -INFINITY : f);
return s;
}
int
voice_pa_vol_to_aep_step(struct userdata *u, pa_volume_t vol)
{
int i;
double vol_dB;
struct aep_volume_steps_s *s = &u->aep_volume_steps;
if (!s->count)
{
pa_log_warn("AEP volume steps table not set.");
return -1;
}
vol_dB = pa_sw_volume_to_dB(vol) * 100.0;
for (i = 0; i < s->count && s->steps[i] < vol_dB; i ++);
return i;
}
/*
* Outputs the volume to stdout.
*/
void show_volume(const sink_info_t *sink_info, const options_t *options) {
pa_volume_t volume;
double v;
char txt[64];
if (sink_info->mute)
volume = 0;
else
volume = options->calculator(&sink_info->volume);
v = (volume * 100) / PA_VOLUME_NORM;
if (options->use_decibel) {
double dB = pa_sw_volume_to_dB(volume);
if (dB > PA_DECIBEL_MININFTY)
snprintf(txt, sizeof(txt), "%0.2f", dB);
else
snprintf(txt, sizeof(txt), "inf");
} else {
snprintf(txt, sizeof(txt), "%0.0f", v);
}
printf("%s\n", txt);
fflush(stdout);
}
/**
* Sink input updated, reflect master volume and mute status into
* showtime's properties.
*/
static void
update_sink_input_info(pa_context *c, const pa_sink_input_info *i,
int eol, void *userdata)
{
pa_audio_mode_t *pam = (pa_audio_mode_t *)userdata;
int n;
pa_volume_t max = PA_VOLUME_MUTED;
if(i == NULL)
return;
for(n = 0; n < i->volume.channels; n++) {
if(i->volume.values[n] > max)
max = i->volume.values[n];
}
pam->mastervol = max;
pam->muted = !!i->mute;
prop_set_float_ex(prop_mastervol, pam->sub_mvol,
pa_sw_volume_to_dB(pam->mastervol), 0);
prop_set_int_ex(prop_mastermute, pam->sub_mute, pam->muted);
}
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);
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_SW_CVOLUME_SNPRINT_DB_MAX];
pa_cvolume_set(&cv, 2, v);
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;
}
