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add new API function pa_cvolume_max()

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This commit is contained in:
Lennart Poettering 2008-08-13 13:52:20 +02:00
parent a176f68e0a
commit e4adcf7071
2 changed files with 15 additions and 0 deletions
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12
src/pulse/volume.c
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@ -74,6 +74,18 @@ pa_volume_t pa_cvolume_avg(const pa_cvolume *a) {
return (pa_volume_t) sum; return (pa_volume_t) sum;
} }
pa_volume_t pa_cvolume_max(const pa_cvolume *a) {
pa_volume_t m = 0;
int i;
pa_assert(a);
for (i = 0; i < a->channels; i++)
if (a->values[i] > m)
m = a->values[i];
return m;
}
pa_volume_t pa_sw_volume_multiply(pa_volume_t a, pa_volume_t b) { pa_volume_t pa_sw_volume_multiply(pa_volume_t a, pa_volume_t b) {
return pa_sw_volume_from_linear(pa_sw_volume_to_linear(a)* pa_sw_volume_to_linear(b)); return pa_sw_volume_from_linear(pa_sw_volume_to_linear(a)* pa_sw_volume_to_linear(b));
} }

3
src/pulse/volume.h
View file

@ -134,6 +134,9 @@ char *pa_cvolume_snprint(char *s, size_t l, const pa_cvolume *c);
/** Return the average volume of all channels */ /** Return the average volume of all channels */
pa_volume_t pa_cvolume_avg(const pa_cvolume *a) PA_GCC_PURE; pa_volume_t pa_cvolume_avg(const pa_cvolume *a) PA_GCC_PURE;
/** Return the maximum volume of all channels. \since 0.9.12 */
pa_volume_t pa_cvolume_max(const pa_cvolume *a) PA_GCC_PURE;
/** Return TRUE when the passed cvolume structure is valid, FALSE otherwise */ /** Return TRUE when the passed cvolume structure is valid, FALSE otherwise */
int pa_cvolume_valid(const pa_cvolume *v) PA_GCC_PURE; int pa_cvolume_valid(const pa_cvolume *v) PA_GCC_PURE;