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authorLennart Poettering <lennart@poettering.net>2009-06-17 03:04:21 +0200
committerLennart Poettering <lennart@poettering.net>2009-06-17 03:04:21 +0200
commit64b0f38b67ed221ac11d017bd27aa62c6b1a8c2b (patch)
treec4f58d6f6313bfbb0107220d0fffe82f8365c952 /src/pulse/volume.h
parentc6830bd9dc53ee745ac331c4ab1c55134562d114 (diff)
volume: implement functions for multiplicating a cvolume with a scalar
Diffstat (limited to 'src/pulse/volume.h')
-rw-r--r--src/pulse/volume.h12
1 files changed, 11 insertions, 1 deletions
diff --git a/src/pulse/volume.h b/src/pulse/volume.h
index c07fd99a..05b7ebb4 100644
--- a/src/pulse/volume.h
+++ b/src/pulse/volume.h
@@ -216,16 +216,26 @@ pa_volume_t pa_sw_volume_multiply(pa_volume_t a, pa_volume_t b) PA_GCC_CONST;
* *dest. This is only valid for software volumes! */
pa_cvolume *pa_sw_cvolume_multiply(pa_cvolume *dest, const pa_cvolume *a, const pa_cvolume *b);
+/** Multiply a per-channel volume with a scalar volume and return the
+ * result in *dest. This is only valid for software volumes! \since
+ * 0.9.16 */
+pa_cvolume *pa_sw_cvolume_multiply_scalar(pa_cvolume *dest, const pa_cvolume *a, pa_volume_t b);
+
/** Divide two volume specifications, return the result. This uses
* PA_VOLUME_NORM as neutral element of division. This is only valid
* for software volumes! If a division by zero is tried the result
* will be 0. \since 0.9.13 */
pa_volume_t pa_sw_volume_divide(pa_volume_t a, pa_volume_t b) PA_GCC_CONST;
-/** Multiply to per-channel volumes and return the result in
+/** Divide two per-channel volumes and return the result in
* *dest. This is only valid for software volumes! \since 0.9.13 */
pa_cvolume *pa_sw_cvolume_divide(pa_cvolume *dest, const pa_cvolume *a, const pa_cvolume *b);
+/** Divide a per-channel volume by a scalar volume and return the
+ * result in *dest. This is only valid for software volumes! \since
+ * 0.9.16 */
+pa_cvolume *pa_sw_cvolume_divide_scalar(pa_cvolume *dest, const pa_cvolume *a, pa_volume_t b);
+
/** Convert a decibel value to a volume (amplitude, not power). This is only valid for software volumes! */
pa_volume_t pa_sw_volume_from_dB(double f) PA_GCC_CONST;