From 64b0f38b67ed221ac11d017bd27aa62c6b1a8c2b Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Wed, 17 Jun 2009 03:04:21 +0200 Subject: volume: implement functions for multiplicating a cvolume with a scalar --- src/pulse/volume.h | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'src/pulse/volume.h') 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; -- cgit