Hi,
I need an unidirectional media flow from network to the SIP device. At
the moment, both direction are established but the CPU performance is to
high.
The stream is resampled from 8000kHz to 48000kHz.
If I make four calls at the same time the CPU performance is reached 80%!
In the INVITE message the SDP offer contains the media attribute "recvonly".
In this case the stream encoder is paused and the stream decoder is
started (see the PJSIP log below).
pjsua_media.c .....Call 0: updating media..
pjsua_aud.c ......Audio channel update..
rtp.c .......pjmedia_rtp_session_init: ses=0x7fd59800aa14,
default_pt=8, ssrc=0x7718876c
rtp.c .......pjmedia_rtp_session_init: ses=0x7fd59800b094,
default_pt=8, ssrc=0x7718876c
stream.c .......Stream strm0x7fd598008378 created
strm0x7fd59800 .......Encoder stream paused
strm0x7fd59800 .......Decoder stream started
resample.c .......resample created: high qualiy, large filter,
in/out rate=8000/16000
resample.c .......resample created: high qualiy, large filter,
in/out rate=16000/8000
pjsua_media.c ......Audio updated, stream #0: PCMA (recvonly)
However, the stream is not passed to the sound device. Sound devices are
the memory receiver and the memory player.
Is there any possibility to establish a call in the direction from the
network to the sound device without the encoder?
Best regards
Norbert
