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Quick fix to avoid non-causal AEC signals on PulseAudio.

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BUG=340
TEST=manually with voe_cmd_test

Review URL: https://webrtc-codereview.appspot.com/451007

git-svn-id: http://webrtc.googlecode.com/svn/trunk@1884 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
andrew@webrtc.org 2012-03-13 19:43:47 +00:00
parent 24c65840de
commit 62283c0ebf
1 changed files with 9 additions and 1 deletions
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10
src/modules/audio_device/main/source/linux/audio_device_pulse_linux.cc
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@ -2712,8 +2712,16 @@ WebRtc_Word32 AudioDeviceLinuxPulse::ProcessRecordedData(
}
}
// Set vqe data
const WebRtc_UWord32 clockDrift(0);
// TODO(andrew): this is a temporary hack, to avoid non-causal far- and
// near-end signals at the AEC for PulseAudio. I think the system delay is
// being correctly calculated here, but for legacy reasons we add +10 ms to
// the value in the AEC. The real fix will be part of a larger investigation
// into managing system delay in the AEC.
if (recDelay > 10)
recDelay -= 10;
else
recDelay = 0;
_ptrAudioBuffer->SetVQEData(_sndCardPlayDelay, recDelay, clockDrift);
// Deliver recorded samples at specified sample rate,