mirrors/pulseaudio
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git synced 2025-11-04 13:29:59 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

implement pa_sw_volume_divide() and pa_sw_cvolume_divide()

Browse source
This commit is contained in:
Lennart Poettering 2008-10-04 01:40:41 +02:00
parent 87c8132ce3
commit da4ad5ed01
2 changed files with 40 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

17
src/pulse/volume.h
View file

@ -168,12 +168,25 @@ int pa_cvolume_channels_equal_to(const pa_cvolume *a, pa_volume_t v) PA_GCC_PURE
/** Return 1 if the specified volume has all channels on normal level */
#define pa_cvolume_is_norm(a) pa_cvolume_channels_equal_to((a), PA_VOLUME_NORM)
/** Multiply two volumes specifications, return the result. This uses PA_VOLUME_NORM as neutral element of multiplication. This is only valid for software volumes! */
/** Multiply two volume specifications, return the result. This uses
* PA_VOLUME_NORM as neutral element of multiplication. This is only
* valid for software volumes! */
pa_volume_t pa_sw_volume_multiply(pa_volume_t a, pa_volume_t b) PA_GCC_CONST;
/** Multiply to per-channel volumes and return the result in *dest. This is only valid for software volumes! */
/** Multiply two per-channel volumes and return the result in
* *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);
/** 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
* *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);
/** Convert a decibel value to a volume. This is only valid for software volumes! */
pa_volume_t pa_sw_volume_from_dB(double f) PA_GCC_CONST;