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| author | Michael Sevakis <jethead71@rockbox.org> | 2013-08-23 14:18:08 -0400 |
|---|---|---|
| committer | Michael Sevakis <jethead71@rockbox.org> | 2014-03-08 08:04:41 +0100 |
| commit | 61d0583384b81de28498544ea3ec2e5c8eba42be (patch) | |
| tree | 0901394a414674d70c82ee56cdfece1c7cce682a /firmware/target/arm/imx233/system-imx233.c | |
| parent | 62b10e383cc7439508e57751dbcdf0d8a617cf1a (diff) | |
| download | rockbox-61d0583384b81de28498544ea3ec2e5c8eba42be.tar.gz rockbox-61d0583384b81de28498544ea3ec2e5c8eba42be.zip | |
Greatly reduce volume-change zipper artifacts with SW volume.
Uses a cosine factor to smoothly shift the PCM level from the old level
to the new one over the length of a frame.
Implements indirect calls to PCM scaling function instead of testing
conditions on every callback, cleanly assigning a different call to
do the volume transition. The volume change call then assigns the final
scaling function.
Change-Id: If1004b92a91c5ca766dd0e4014ec274636e8ed26
Reviewed-on: http://gerrit.rockbox.org/763
Reviewed-by: Michael Sevakis <jethead71@rockbox.org>
Tested: Michael Sevakis <jethead71@rockbox.org>
Diffstat (limited to 'firmware/target/arm/imx233/system-imx233.c')
0 files changed, 0 insertions, 0 deletions