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Enable FEC/PLR

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Enable forward error correction + packet loss percent tuning in opus encoder. Additionally, use some sane defaults. This should fix people hearing robo in music when packet loss is happening.
This commit is contained in:
Jake 2016-05-03 22:34:30 -07:00
parent d9c780b8a8
commit 7efabce4b2
1 changed files with 18 additions and 0 deletions
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18
discord/opus.py
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@ -156,6 +156,8 @@ APPLICATION_VOIP = 2048
APPLICATION_LOWDELAY = 2051
CTL_SET_BITRATE = 4002
CTL_SET_BANDWIDTH = 4008
CTL_SET_FEC = 4012
CTL_SET_PLP = 4014
band_ctl = {
'narrow': 1101,
@ -181,6 +183,8 @@ class Encoder:
self._state = self._create_state()
self.set_bitrate(128)
self.set_fec(True)
self.set_expected_packet_loss_percent(0.15)
self.set_bandwidth('full')
def __del__(self):
@ -218,6 +222,20 @@ class Encoder:
if ret < 0:
log.info('error has happened in set_bandwidth')
raise OpusError(ret)
def set_fec(self, enabled=True):
ret = _lib.opus_encoder_ctl(self._state, CTL_SET_FEC, 1 if enabled else 0)
if ret < 0:
log.info('error has happened in set_fec')
raise OpusError(ret)
def set_expected_packet_loss_percent(self, percentage):
ret = _lib.opus_encoder_ctl(self._state, CTL_SET_PLP, min(100, max(0, int(percentage * 100))))
if ret < 0:
log.info('error has happened in set_expected_packet_loss_percent')
raise OpusError(ret)
def encode(self, pcm, frame_size):
max_data_bytes = len(pcm)