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-rw-r--r--src/pulse/volume.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/src/pulse/volume.c b/src/pulse/volume.c
index 3dcf3157..234c3f72 100644
--- a/src/pulse/volume.c
+++ b/src/pulse/volume.c
@@ -876,3 +876,37 @@ pa_cvolume* pa_cvolume_merge(pa_cvolume *dest, const pa_cvolume *a, const pa_cvo
return dest;
}
+
+pa_cvolume* pa_cvolume_inc(pa_cvolume *v, pa_volume_t inc) {
+ pa_volume_t m;
+
+ pa_assert(v);
+
+ pa_return_val_if_fail(pa_cvolume_valid(v), NULL);
+
+ m = pa_cvolume_max(v);
+
+ if (m >= PA_VOLUME_MAX - inc)
+ m = PA_VOLUME_MAX;
+ else
+ m += inc;
+
+ return pa_cvolume_scale(v, m);
+}
+
+pa_cvolume* pa_cvolume_dec(pa_cvolume *v, pa_volume_t dec) {
+ pa_volume_t m;
+
+ pa_assert(v);
+
+ pa_return_val_if_fail(pa_cvolume_valid(v), NULL);
+
+ m = pa_cvolume_max(v);
+
+ if (m <= PA_VOLUME_MUTED + dec)
+ m = PA_VOLUME_MUTED;
+ else
+ m -= dec;
+
+ return pa_cvolume_scale(v, m);
+}