Tune the overrun correction
The new overrun correction is: if the previous write() cycle time is <
50% of expected, then sleep enough extra to make the total cycle time =
95% of expected. This should help compensate for HAL implementations
that have uneven cycle times due to sample rate conversion.
Bug: 6881638
Change-Id: I5ab58afdfceee7ac523177f021fbf62d743d571a
diff --git a/services/audioflinger/FastMixer.cpp b/services/audioflinger/FastMixer.cpp
index b89bf81..fbcc11a 100644
--- a/services/audioflinger/FastMixer.cpp
+++ b/services/audioflinger/FastMixer.cpp
@@ -222,8 +222,8 @@
mixBuffer = new short[frameCount * 2];
periodNs = (frameCount * 1000000000LL) / sampleRate; // 1.00
underrunNs = (frameCount * 1750000000LL) / sampleRate; // 1.75
- overrunNs = (frameCount * 250000000LL) / sampleRate; // 0.25
- forceNs = (frameCount * 750000000LL) / sampleRate; // 0.75
+ overrunNs = (frameCount * 500000000LL) / sampleRate; // 0.50
+ forceNs = (frameCount * 950000000LL) / sampleRate; // 0.95
warmupNs = (frameCount * 500000000LL) / sampleRate; // 0.50
} else {
periodNs = 0;