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yet another auto jitter buffer fix

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This commit is contained in:
Volker Fischer 2009-03-19 17:45:43 +00:00
parent 18d3872d71
commit d1fa3ff53e
1 changed files with 3 additions and 3 deletions
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6
src/client.cpp
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@ -444,8 +444,8 @@ void CClient::UpdateSocketBufferSize()
// We use the time response measurement for the automatic setting. // We use the time response measurement for the automatic setting.
// Assumptions: // Assumptions:
// - the audio interface/network jitter is assumed to be Gaussian // - the audio interface/network jitter is assumed to be Gaussian
// - the buffer size is set to 3 times the standard deviation of // - the buffer size is set to 3.3 times the standard deviation of
// the jitter (~97% of the jitter should be fit in the // the jitter (~98% of the jitter should be fit in the
// buffer) // buffer)
// - introduce a hysteresis to avoid switching the buffer sizes all the // - introduce a hysteresis to avoid switching the buffer sizes all the
// time in case the time response measurement is close to a bound // time in case the time response measurement is close to a bound
@ -469,7 +469,7 @@ void CClient::UpdateSocketBufferSize()
// divide by MIN_SERVER_BLOCK_DURATION_MS because this is the size of // divide by MIN_SERVER_BLOCK_DURATION_MS because this is the size of
// one block in the jitter buffer // one block in the jitter buffer
const double dEstCurBufSet = ( dAudioBufferDurationMs + const double dEstCurBufSet = ( dAudioBufferDurationMs +
3 * ( Channel.GetTimingStdDev() + CycleTimeVariance.GetStdDev() ) ) / 3.3 * ( Channel.GetTimingStdDev() + CycleTimeVariance.GetStdDev() ) ) /
MIN_SERVER_BLOCK_DURATION_MS + 0.5; MIN_SERVER_BLOCK_DURATION_MS + 0.5;
// upper/lower hysteresis decision // upper/lower hysteresis decision