ios - 使用 PJSIP 连续暂停和启动视频流时应用程序崩溃

Question

如果我在视频通话进行时连续暂停和启动，我的应用程序就会崩溃我已使用以下代码来暂停和恢复视频流。

PJSIP版本:2.9

func pauseVideo(_ value: Bool) {
    guard let id = SIPAccount.account?.calls.last?.call_id else { return }
    let operation = value ? PJSUA_CALL_VID_STRM_STOP_TRANSMIT : PJSUA_CALL_VID_STRM_START_TRANSMIT

    var param = pjsua_call_vid_strm_op_param()
    pjsua_call_vid_strm_op_param_default(&param)
    param.med_idx = pjsua_call_get_vid_stream_idx(pjsua_call_id(id))
    param.dir = value ? PJMEDIA_DIR_NONE : PJMEDIA_DIR_ENCODING_DECODING

    pjsua_call_set_vid_strm(pjsua_call_id(id), operation, &param)
}

日志:

PJSIP_log: in pauseVideo
pjsua_vid.c  Call 0: set video stream, op=5
vid_conf.c  .Updating render state for port id 2 (1 sources)..
vid_conf.c  .Created render state for connection 3->2
vid_conf.c  .src#0=BGRA/352x288->352x264@0,12 dst=320x240@0,0
vid_conf.c  .Port 3 (Front Camera) transmitting to port 2 (vstenc0x12c093028)
vstenc0x12c093028  .Encoder stream resumed
PJSIP_log: video pause status 0
vstenc0x12c093028 !Forcing encoder to generate keyframe
PJSIP_log: in pauseVideo
pjsua_vid.c !Call 0: set video stream, op=6
vstenc0x12c093028  .Encoder stream paused
vid_conf.c  .Cleaned up render state for connection 3->2
vid_conf.c  .Port 3 (Front Camera) stop transmitting to port 2 (vstenc0x12c093028)
PJSIP_log: video pause status 0
silencedet.c !Re-adjust threshold (in silence)to 0
PJSIP_log: in pauseVideo
pjsua_vid.c !Call 0: set video stream, op=5
strm0x12ca03228 !Jitter buffer starts returning normal frames (after 249 empty/lost)
strm0x12ca03228  Jitter buffer empty (prefetch=0), plc invoked
strm0x12ca03228  Start talksprut..
strm0x12ca03228  Starting silence
silencedet.c  Re-adjust threshold (in silence)to 0

之后pjsua_vid.c !Call 0: set video stream, op=5 应用程序挂起，这 3 行将被记录多次

strm0x12ca03228  Start talksprut..
strm0x12ca03228  Starting silence
silencedet.c  Re-adjust threshold (in silence)to 0

Answer 1

使用pjsua_schedule_timer2()解决了这个问题