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Add new API functions pa_volume_snprint() and pa_sw_volume_snprint_dB()

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This commit is contained in:
Lennart Poettering 2008-12-24 00:45:06 +01:00
parent c2bd8dc517
commit 6342053b34
3 changed files with 62 additions and 3 deletions
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43
src/pulse/volume.c
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@ -179,6 +179,21 @@ char *pa_cvolume_snprint(char *s, size_t l, const pa_cvolume *c) {
return s;
}
char *pa_volume_snprint(char *s, size_t l, pa_volume_t v) {
pa_assert(s);
pa_assert(l > 0);
pa_init_i18n();
if (v == (pa_volume_t) -1) {
pa_snprintf(s, l, _("(invalid)"));
return s;
}
pa_snprintf(s, l, "%3u%%", (v*100)/PA_VOLUME_NORM);
return s;
}
char *pa_sw_cvolume_snprint_dB(char *s, size_t l, const pa_cvolume *c) {
unsigned channel;
pa_bool_t first = TRUE;
@ -198,10 +213,12 @@ char *pa_sw_cvolume_snprint_dB(char *s, size_t l, const pa_cvolume *c) {
*(e = s) = 0;
for (channel = 0; channel < c->channels && l > 1; channel++) {
double f = pa_sw_volume_to_dB(c->values[channel]);
l -= pa_snprintf(e, l, "%s%u: %0.2f dB",
first ? "" : " ",
channel,
pa_sw_volume_to_dB(c->values[channel]));
first ? "" : " ",
channel,
isinf(f) < 0 || f <= -USER_DECIBEL_RANGE ? -INFINITY : f);
e = strchr(e, 0);
first = FALSE;
@ -210,6 +227,26 @@ char *pa_sw_cvolume_snprint_dB(char *s, size_t l, const pa_cvolume *c) {
return s;
}
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 (v == (pa_volume_t) -1) {
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 <= -USER_DECIBEL_RANGE ? -INFINITY : f);
return s;
}
/** Return non-zero if the volume of all channels is equal to the specified value */
int pa_cvolume_channels_equal_to(const pa_cvolume *a, pa_volume_t v) {
unsigned c;