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| author | Klaus Schmidinger <vdr@tvdr.de> | 2004-10-17 09:12:16 +0200 |
|---|---|---|
| committer | Klaus Schmidinger <vdr@tvdr.de> | 2004-10-17 09:12:16 +0200 |
| commit | 1f726846f5e6f8137c6bcc1df53b61b35e3ae08d (patch) | |
| tree | 67028640d791f0190cf7e8c97f67b40676c3f7d2 | |
| parent | 9f18dbc8cfa3446938656f1cea1ed18ff31ec386 (diff) | |
| download | vdr-1f726846f5e6f8137c6bcc1df53b61b35e3ae08d.tar.gz vdr-1f726846f5e6f8137c6bcc1df53b61b35e3ae08d.tar.bz2 | |
Refined formula for making volume control more linear
| -rw-r--r-- | CONTRIBUTORS | 3 | ||||
| -rw-r--r-- | HISTORY | 2 | ||||
| -rw-r--r-- | dvbdevice.c | 7 |
3 files changed, 6 insertions, 6 deletions
diff --git a/CONTRIBUTORS b/CONTRIBUTORS index 55250de3..09e3229a 100644 --- a/CONTRIBUTORS +++ b/CONTRIBUTORS @@ -1092,3 +1092,6 @@ Arthur Konovalov <kasjas@hot.ee> Milos Kapoun <m.kapoun@cra.cz> for suggesting to skip code table info in SI data for adding missing Czech characters to fontosd-iso8859-2.c + +Udo Richter <udo_richter@gmx.de> + for refining the formula for making volume control more linear @@ -3022,7 +3022,7 @@ Video Disk Recorder Revision History - Avoiding unnecessary section filter start/stops (thanks to Marco Schlüßler). - Made the "Channel not available!" message and mtInfo instead of mtError (suggested by Wayne Keer). -- Made volume control more linear (thanks to Emil Naepflein). +- Made volume control more linear (thanks to Emil Naepflein and Udo Richter). - Now skipping code table info in SI data (suggested by Milos Kapoun). - Added missing Czech characters to fontosd-iso8859-2.c (thanks to Milos Kapoun). - Fixed a crash in the time search mechanism (reported by Reinhard Nissl). diff --git a/dvbdevice.c b/dvbdevice.c index 6bee3edc..561b6c62 100644 --- a/dvbdevice.c +++ b/dvbdevice.c @@ -4,7 +4,7 @@ * See the main source file 'vdr.c' for copyright information and * how to reach the author. * - * $Id: dvbdevice.c 1.96 2004/10/16 14:38:24 kls Exp $ + * $Id: dvbdevice.c 1.97 2004/10/17 09:10:43 kls Exp $ */ #include "dvbdevice.h" @@ -786,10 +786,7 @@ void cDvbDevice::SetVolumeDevice(int Volume) if (HasDecoder()) { audio_mixer_t am; // conversion for linear volume response: - int i, Vol; - for (i = 1, Vol = 0; i < Volume; i++) - Vol += (256 - i) * (256 - i); - am.volume_left = am.volume_right = Vol / 21718; + am.volume_left = am.volume_right = 2 * Volume - Volume * Volume / 255; CHECK(ioctl(fd_audio, AUDIO_SET_MIXER, &am)); } } |