This is variant 1 to fix that issue by directly calling pjmedia_port_get_frame in conference.c (write_port) after calling pjmedia_portput_frame to ensure that there are "snychronous" calls of put- and get-frame. --- pjmedia/src/pjmedia/conference.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/pjmedia/src/pjmedia/conference.c b/pjmedia/src/pjmedia/conference.c index 2ef65380..42e741d6 100644 --- a/pjmedia/src/pjmedia/conference.c +++ b/pjmedia/src/pjmedia/conference.c @@ -214,6 +214,11 @@ struct conf_port * Burst and drift are handled by delay buffer. */ pjmedia_delay_buf *delay_buf; + + /* RX null buffer is a temporary buffer to be used if port is muted or + * nobody is transmitting to this port, transmit NULL frame. + */ + pj_int16_t *rx_null_buf; /**< Rx null buffer. */ }; @@ -396,6 +401,10 @@ static pj_status_t create_conf_port( pj_pool_t *pool, PJ_ASSERT_RETURN(conf_port->tx_buf, PJ_ENOMEM); } + /* create null frame to store silence frames */ + conf_port->rx_null_buf = (pj_int16_t*) + pj_pool_alloc(pool, conf_port->samples_per_frame * + sizeof(conf_port->rx_null_buf[0])); /* Create mix buffer. */ conf_port->mix_buf = (pj_int32_t*) @@ -1587,6 +1596,15 @@ static pj_status_t write_port(pjmedia_conf *conf, struct conf_port *cport, cport->tx_heart_beat -= cport->samples_per_frame; frame.timestamp.u64 += cport->samples_per_frame; + + /* directly call get_frame to have synchron access and avoid + JB at full capacity */ + pjmedia_frame null_frame; + pj_bzero(&null_frame, sizeof(null_frame)); + null_frame.buf = cport->rx_null_buf; + null_frame.type = PJMEDIA_FRAME_TYPE_AUDIO; + null_frame.size = cport->samples_per_frame * BYTES_PER_SAMPLE; + pjmedia_port_get_frame(cport->port, &null_frame); } } -- 2.13.7 _______________________________________________ Visit our blog: http://blog.pjsip.org pjsip mailing list pjsip@xxxxxxxxxxxxxxx http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org
