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| author | Glenn Kasten <gkasten@google.com> | 2014-03-21 17:53:17 -0700 |
|---|---|---|
| committer | Glenn Kasten <gkasten@google.com> | 2014-05-19 09:46:25 -0700 |
| commit | c56f3426099a3cf2d07ccff8886050c7fbce140f (patch) | |
| tree | 9e486a809f9d500a70fd26c4e1d2596ded190dbe /services/audioflinger/AudioMixer.h | |
| parent | 7c96d53a65085f42ac2b6d416cbc16fd36ed72ff (diff) | |
| download | frameworks_av-c56f3426099a3cf2d07ccff8886050c7fbce140f.zip frameworks_av-c56f3426099a3cf2d07ccff8886050c7fbce140f.tar.gz frameworks_av-c56f3426099a3cf2d07ccff8886050c7fbce140f.tar.bz2 | |
Pass stereo gains as packed minifloat
This will allow (eventually) a greater dynamic range for gains.
However there are still a few remaining places in effects and mixer
that will also need to be changed in order to get the full benefit.
Also fixes a minor bug: was not checking for NaN in AudioTrack C++.
Change-Id: I63bce9e82e0a61546d8ff475fb94bcb700d99c96
Diffstat (limited to 'services/audioflinger/AudioMixer.h')
| -rw-r--r-- | services/audioflinger/AudioMixer.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/services/audioflinger/AudioMixer.h b/services/audioflinger/AudioMixer.h index e5e120c..09e63a6 100644 --- a/services/audioflinger/AudioMixer.h +++ b/services/audioflinger/AudioMixer.h @@ -30,6 +30,9 @@ #include <system/audio.h> #include <media/nbaio/NBLog.h> +// FIXME This is actually unity gain, which might not be max in future, expressed in U.12 +#define MAX_GAIN_INT AudioMixer::UNITY_GAIN + namespace android { // ---------------------------------------------------------------------------- @@ -91,6 +94,7 @@ public: REMOVE = 0x4102, // Remove the sample rate converter on this track name; // the track is restored to the mix sample rate. // for target RAMP_VOLUME and VOLUME (8 channels max) + // FIXME use float for these 3 to improve the dynamic range VOLUME0 = 0x4200, VOLUME1 = 0x4201, AUXLEVEL = 0x4210, |