doubango/bindings/_common/MediaSessionMgr.cxx

676 lines
21 KiB
C++
Executable File

/*
* Copyright (C) 2010-2011 Mamadou Diop.
*
* Contact: Mamadou Diop <diopmamadou(at)doubango.org>
*
* This file is part of Open Source Doubango Framework.
*
* DOUBANGO is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* DOUBANGO is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with DOUBANGO.
*
*/
#include "MediaSessionMgr.h"
//
// QoS
//
QoS::QoS(float qavg, float q1 /*= -1.f*/, float q2 /*= -1.f*/, float q3 /*= -1.f*/, float q4 /*= -1.f*/, float q5 /*= -1.f*/)
: m_Qqvg(qavg)
, m_VideoInWidth(0)
, m_VideoOutWidth(0)
, m_VideoInHeight(0)
, m_VideoOutHeight(0)
, m_BandwidthDownKbps(0)
, m_BandwidthUpKbps(0)
, m_VideoInAvgFps(0)
, m_VideoDecAvgTime(0)
, m_VideoEncAvgTime(0)
{
m_Qn[0] = q1;
m_Qn[1] = q2;
m_Qn[2] = q3;
m_Qn[3] = q4;
m_Qn[4] = q5;
}
QoS::~QoS()
{
}
//
// Codec
//
Codec::Codec(const struct tmedia_codec_s* pWrappedCodec)
{
m_pWrappedCodec = (struct tmedia_codec_s*)tsk_object_ref(TSK_OBJECT(pWrappedCodec));
}
Codec::~Codec()
{
TSK_OBJECT_SAFE_FREE(m_pWrappedCodec);
}
twrap_media_type_t Codec::getMediaType()
{
if(m_pWrappedCodec) {
switch(m_pWrappedCodec->type) {
case tmedia_audio:
return twrap_media_audio;
case tmedia_video:
return twrap_media_video;
case tmedia_msrp:
return twrap_media_msrp;
default:
break;
}
}
return twrap_media_none;
}
const char* Codec::getName()
{
if(m_pWrappedCodec) {
return m_pWrappedCodec->name;
}
return tsk_null;
}
const char* Codec::getDescription()
{
if(m_pWrappedCodec) {
return m_pWrappedCodec->desc;
}
return tsk_null;
}
const char* Codec::getNegFormat()
{
if(m_pWrappedCodec) {
return m_pWrappedCodec->neg_format ? m_pWrappedCodec->neg_format : m_pWrappedCodec->format;
}
return tsk_null;
}
int Codec::getAudioSamplingRate()
{
if(m_pWrappedCodec && m_pWrappedCodec->plugin) {
return m_pWrappedCodec->plugin->rate;
}
return 0;
}
int Codec::getAudioChannels()
{
if(m_pWrappedCodec && (m_pWrappedCodec->type & tmedia_audio) && m_pWrappedCodec->plugin) {
return m_pWrappedCodec->plugin->audio.channels;
}
return 0;
}
int Codec::getAudioPTime()
{
if(m_pWrappedCodec && (m_pWrappedCodec->type & tmedia_audio) && m_pWrappedCodec->plugin) {
return m_pWrappedCodec->plugin->audio.ptime;
}
return 0;
}
//
// MediaSessionMgr
//
MediaSessionMgr::MediaSessionMgr(tmedia_session_mgr_t* pWrappedMgr)
{
m_pWrappedMgr = (tmedia_session_mgr_t*)tsk_object_ref(pWrappedMgr);
}
MediaSessionMgr::~MediaSessionMgr()
{
TSK_OBJECT_SAFE_FREE(m_pWrappedMgr);
}
bool MediaSessionMgr::sessionSetInt32(twrap_media_type_t media, const char* key, int32_t value)
{
tmedia_type_t _media = twrap_get_native_media_type(media);
return (tmedia_session_mgr_set(m_pWrappedMgr,
TMEDIA_SESSION_SET_INT32(_media, key, value),
TMEDIA_SESSION_SET_NULL()) == 0);
}
int32_t MediaSessionMgr::sessionGetInt32(twrap_media_type_t media, const char* key)
{
int32_t value = 0;
tmedia_type_t _media = twrap_get_native_media_type(media);
(tmedia_session_mgr_get(m_pWrappedMgr,
TMEDIA_SESSION_GET_INT32(_media, key, &value),
TMEDIA_SESSION_GET_NULL()));
return value;
}
QoS* MediaSessionMgr::sessionGetQoS(twrap_media_type_t media)
{
tmedia_type_t _media = twrap_get_native_media_type(media);
tmedia_session_t* session = tmedia_session_mgr_find(m_pWrappedMgr, _media);
if (session) {
QoS* pQoS = new QoS(
session->qos_metrics.qvag,
session->qos_metrics.q1,
session->qos_metrics.q2,
session->qos_metrics.q3,
session->qos_metrics.q4,
session->qos_metrics.q5);
if (pQoS && ((_media & tmedia_video) || (_media & tmedia_bfcp_video))) {
pQoS->m_VideoInWidth = session->qos_metrics.video_in_width;
pQoS->m_VideoInHeight = session->qos_metrics.video_in_height;
pQoS->m_VideoOutWidth = session->qos_metrics.video_out_width;
pQoS->m_VideoOutHeight = session->qos_metrics.video_out_height;
pQoS->m_BandwidthDownKbps = session->qos_metrics.bw_down_est_kbps;
pQoS->m_BandwidthUpKbps = session->qos_metrics.bw_up_est_kbps;
pQoS->m_VideoInAvgFps = session->qos_metrics.video_in_avg_fps;
pQoS->m_VideoDecAvgTime = session->qos_metrics.video_dec_avg_time;
pQoS->m_VideoEncAvgTime = session->qos_metrics.video_enc_avg_time;
}
TSK_OBJECT_SAFE_FREE(session);
return pQoS;
}
return NULL;
}
bool MediaSessionMgr::consumerSetInt32(twrap_media_type_t media, const char* key, int32_t value)
{
tmedia_type_t _media = twrap_get_native_media_type(media);
return (tmedia_session_mgr_set(m_pWrappedMgr,
TMEDIA_SESSION_CONSUMER_SET_INT32(_media, key, value),
TMEDIA_SESSION_SET_NULL()) == 0);
}
bool MediaSessionMgr::consumerSetInt64(twrap_media_type_t media, const char* key, int64_t value)
{
tmedia_type_t _media = twrap_get_native_media_type(media);
return (tmedia_session_mgr_set(m_pWrappedMgr,
TMEDIA_SESSION_CONSUMER_SET_INT64(_media, key, value),
TMEDIA_SESSION_SET_NULL()) == 0);
}
bool MediaSessionMgr::producerSetInt32(twrap_media_type_t media, const char* key, int32_t value)
{
tmedia_type_t _media = twrap_get_native_media_type(media);
return (tmedia_session_mgr_set(m_pWrappedMgr,
TMEDIA_SESSION_PRODUCER_SET_INT32(_media, key, value),
TMEDIA_SESSION_SET_NULL()) == 0);
}
bool MediaSessionMgr::producerSetInt64(twrap_media_type_t media, const char* key, int64_t value)
{
tmedia_type_t _media = twrap_get_native_media_type(media);
return (tmedia_session_mgr_set(m_pWrappedMgr,
TMEDIA_SESSION_PRODUCER_SET_INT64(_media, key, value),
TMEDIA_SESSION_SET_NULL()) == 0);
}
Codec* MediaSessionMgr::producerGetCodec(twrap_media_type_t media)
{
tmedia_codec_t* _codec = tsk_null;
tmedia_type_t _media = twrap_get_native_media_type(media);
(tmedia_session_mgr_get(m_pWrappedMgr,
TMEDIA_SESSION_PRODUCER_GET_POBJECT(_media, "codec", &_codec),
TMEDIA_SESSION_GET_NULL()));
if(_codec) {
Codec* pCodec = new Codec(_codec);
TSK_OBJECT_SAFE_FREE(_codec);
return pCodec;
}
return NULL;
}
#include "tinydav/audio/tdav_session_audio.h"
#include "tinydav/video/tdav_session_video.h"
#include "ProxyPluginMgr.h"
const ProxyPlugin* MediaSessionMgr::findProxyPlugin(twrap_media_type_t media, bool consumer)const
{
const ProxyPlugin* plugin = tsk_null;
ProxyPluginMgr* manager = ProxyPluginMgr::getInstance();
if(media != twrap_media_audio && media != twrap_media_video) {
TSK_DEBUG_ERROR("Invalid media type");
return tsk_null;
}
if(manager && m_pWrappedMgr) {
tmedia_type_t _media = twrap_get_native_media_type(media);
tmedia_session_t* session = tmedia_session_mgr_find(m_pWrappedMgr, _media);
if(session) {
if(session->plugin == tdav_session_audio_plugin_def_t) {
if(consumer) {
plugin = manager->findPlugin(TDAV_SESSION_AV(session)->consumer);
}
else {
plugin = manager->findPlugin(TDAV_SESSION_AV(session)->producer);
}
}
else if(session->plugin == tdav_session_video_plugin_def_t) {
if(consumer) {
plugin = manager->findPlugin(TDAV_SESSION_AV(session)->consumer);
}
else {
plugin = manager->findPlugin(TDAV_SESSION_AV(session)->producer);
}
}
else {
TSK_DEBUG_ERROR("Unknown session with media type = %d", _media);
}
tsk_object_unref(session);
}
}
else {
TSK_DEBUG_ERROR("Invalid state");
}
return plugin;
}
// FIXME: create generic function to register any kind and number of plugin from a file
unsigned int MediaSessionMgr::registerAudioPluginFromFile(const char* path)
{
static struct tsk_plugin_s* __plugin = tsk_null;
if(__plugin) {
TSK_DEBUG_ERROR("Audio plugin already registered");
return 0;
}
if((__plugin = tsk_plugin_create(path))) {
unsigned int count = 0;
tsk_plugin_def_ptr_const_t plugin_def_ptr_const;
if((plugin_def_ptr_const = tsk_plugin_get_def(__plugin, tsk_plugin_def_type_consumer, tsk_plugin_def_media_type_audio))) {
if(tmedia_consumer_plugin_register((const tmedia_consumer_plugin_def_t*)plugin_def_ptr_const) == 0) {
++count;
}
}
if((plugin_def_ptr_const = tsk_plugin_get_def(__plugin, tsk_plugin_def_type_producer, tsk_plugin_def_media_type_audio))) {
if(tmedia_producer_plugin_register((const tmedia_producer_plugin_def_t*)plugin_def_ptr_const) == 0) {
++count;
}
}
return count;
}
TSK_DEBUG_ERROR("Failed to create plugin with path=%s", path);
return 0;
}
uint64_t MediaSessionMgr::getSessionId(twrap_media_type_t media)const
{
//const ProxyPlugin* plugin = tsk_null;
ProxyPluginMgr* manager = ProxyPluginMgr::getInstance();
uint64_t id = 0;
if (media != twrap_media_audio && media != twrap_media_video) {
TSK_DEBUG_ERROR("Invalid media type");
return 0;
}
if (manager && m_pWrappedMgr) {
tmedia_type_t _media = twrap_get_native_media_type(media);
tmedia_session_t* session = tmedia_session_mgr_find(m_pWrappedMgr, _media);
if (session) {
id = session->id;
}
tsk_object_unref(session);
}
else {
TSK_DEBUG_ERROR("Invalid state");
}
return id;
}
bool MediaSessionMgr::defaultsSetProfile(tmedia_profile_t profile)
{
return (tmedia_defaults_set_profile(profile) == 0);
}
tmedia_profile_t MediaSessionMgr::defaultsGetProfile()
{
return tmedia_defaults_get_profile();
}
bool MediaSessionMgr::defaultsSetBandwidthLevel(tmedia_bandwidth_level_t bl) // @deprecated
{
return tmedia_defaults_set_bl(bl) == 0;
}
tmedia_bandwidth_level_t MediaSessionMgr::defaultsGetBandwidthLevel() // @deprecated
{
return tmedia_defaults_get_bl();
}
bool MediaSessionMgr::defaultsSetCongestionCtrlEnabled(bool enabled)
{
return tmedia_defaults_set_congestion_ctrl_enabled(enabled ? tsk_true : tsk_false) == 0;
}
bool MediaSessionMgr::defaultsSetVideoMotionRank(int32_t video_motion_rank)
{
return (tmedia_defaults_set_video_motion_rank(video_motion_rank) == 0);
}
bool MediaSessionMgr::defaultsSetVideoFps(int32_t video_fps)
{
return (tmedia_defaults_set_video_fps(video_fps) == 0);
}
bool MediaSessionMgr::defaultsSetBandwidthVideoUploadMax(int32_t bw_video_up_max_kbps)
{
return (tmedia_defaults_set_bandwidth_video_upload_max(bw_video_up_max_kbps) == 0);
}
bool MediaSessionMgr::defaultsSetBandwidthVideoDownloadMax(int32_t bw_video_down_max_kbps)
{
return (tmedia_defaults_set_bandwidth_video_download_max(bw_video_down_max_kbps) == 0);
}
bool MediaSessionMgr::defaultsSetPrefVideoSize(tmedia_pref_video_size_t pref_video_size)
{
return tmedia_defaults_set_pref_video_size(pref_video_size) == 0;
}
bool MediaSessionMgr::defaultsSetPrefVideoSizeOutRange(tmedia_pref_video_size_t min, tmedia_pref_video_size_t max)
{
return tmedia_defaults_set_pref_video_size_range(min, max) == 0;
}
bool MediaSessionMgr::defaultsSetAdaptativeVideoSizeOutEnabled(bool enabled)
{
return tmedia_defaults_set_adapt_video_size_range_enabled(enabled ? tsk_true : tsk_false) == 0;
}
bool MediaSessionMgr::defaultsSetJbMargin(uint32_t jb_margin_ms)
{
return tmedia_defaults_set_jb_margin(jb_margin_ms) == 0;
}
bool MediaSessionMgr::defaultsSetJbMaxLateRate(uint32_t jb_late_rate_percent)
{
return tmedia_defaults_set_jb_max_late_rate(jb_late_rate_percent) == 0;
}
bool MediaSessionMgr::defaultsSetEchoTail(uint32_t echo_tail)
{
return tmedia_defaults_set_echo_tail(echo_tail) == 0;
}
uint32_t MediaSessionMgr::defaultsGetEchoTail()
{
return tmedia_defaults_get_echo_tail();
}
bool MediaSessionMgr::defaultsSetEchoSkew(uint32_t echo_skew)
{
return tmedia_defaults_set_echo_skew(echo_skew) == 0;
}
bool MediaSessionMgr::defaultsSetEchoSuppEnabled(bool echo_supp_enabled)
{
return tmedia_defaults_set_echo_supp_enabled(echo_supp_enabled ? tsk_true : tsk_false) == 0;
}
bool MediaSessionMgr::defaultsGetEchoSuppEnabled()
{
return tmedia_defaults_get_echo_supp_enabled() ? true : false;
}
bool MediaSessionMgr::defaultsSetAgcEnabled(bool agc_enabled)
{
return tmedia_defaults_set_agc_enabled(agc_enabled ? tsk_true : tsk_false) == 0;
}
bool MediaSessionMgr::defaultsGetAgcEnabled()
{
return tmedia_defaults_get_agc_enabled() ? true : false;
}
bool MediaSessionMgr::defaultsSetAgcLevel(float agc_level)
{
return tmedia_defaults_set_agc_level(agc_level) == 0;
}
float MediaSessionMgr::defaultsGetAgcLevel()
{
return tmedia_defaults_get_agc_level();
}
bool MediaSessionMgr::defaultsSetVadEnabled(bool vad_enabled)
{
return tmedia_defaults_set_vad_enabled(vad_enabled ? tsk_true : tsk_false) == 0;
}
bool MediaSessionMgr::defaultsGetGetVadEnabled()
{
return tmedia_defaults_get_vad_enabled() ? true : false;
}
bool MediaSessionMgr::defaultsSetNoiseSuppEnabled(bool noise_supp_enabled)
{
return tmedia_defaults_set_noise_supp_enabled(noise_supp_enabled ? tsk_true : tsk_false) == 0;
}
bool MediaSessionMgr::defaultsGetNoiseSuppEnabled()
{
return tmedia_defaults_get_noise_supp_enabled() ? true : false;
}
bool MediaSessionMgr::defaultsSetNoiseSuppLevel(int32_t noise_supp_level)
{
return tmedia_defaults_set_noise_supp_level(noise_supp_level) == 0;
}
int32_t MediaSessionMgr::defaultsGetNoiseSuppLevel()
{
return tmedia_defaults_get_noise_supp_level();
}
bool MediaSessionMgr::defaultsSetConditionalRingingEnabled(bool _cond_ringing_enabled)
{
return tmedia_defaults_set_conditional_ringing_enabled(_cond_ringing_enabled ? tsk_true : tsk_false) == 0;
}
bool MediaSessionMgr::defaultsGetConditionalRingingEnabled()
{
return !!tmedia_defaults_get_conditional_ringing_enabled();
}
bool MediaSessionMgr::defaultsSet100relEnabled(bool _100rel_enabled)
{
return tmedia_defaults_set_100rel_enabled(_100rel_enabled ? tsk_true : tsk_false) == 0;
}
bool MediaSessionMgr::defaultsGet100relEnabled()
{
return !!tmedia_defaults_get_100rel_enabled();
}
bool MediaSessionMgr::defaultsSetScreenSize(int32_t sx, int32_t sy)
{
return tmedia_defaults_set_screen_size(sx, sy) == 0;
}
bool MediaSessionMgr::defaultsSetAudioGain(int32_t producer_gain, int32_t consumer_gain)
{
return tmedia_defaults_set_audio_gain(producer_gain, consumer_gain) == 0;
}
bool MediaSessionMgr::defaultsSetAudioPtime(int32_t ptime)
{
return tmedia_defaults_set_audio_ptime(ptime) == 0;
}
bool MediaSessionMgr::defaultsSetAudioChannels(int32_t channel_playback, int32_t channel_record)
{
return tmedia_defaults_set_audio_channels(channel_playback, channel_record) == 0;
}
bool MediaSessionMgr::defaultsSetRtpPortRange(uint16_t range_start, uint16_t range_stop)
{
return tmedia_defaults_set_rtp_port_range(range_start, range_stop) == 0;
}
bool MediaSessionMgr::defaultsSetRtpSymetricEnabled(bool enabled)
{
return tmedia_defaults_set_rtp_symetric_enabled(enabled ? tsk_true : tsk_false) == 0;
}
bool MediaSessionMgr::defaultsSetMediaType(twrap_media_type_t media_type)
{
return (tmedia_defaults_set_media_type(twrap_get_native_media_type(media_type)) == 0);
}
bool MediaSessionMgr::defaultsSetVolume(int32_t volume)
{
return (tmedia_defaults_set_volume(volume) == 0);
}
int32_t MediaSessionMgr::defaultsGetVolume()
{
return tmedia_defaults_get_volume();
}
bool MediaSessionMgr::defaultsSetInviteSessionTimers(int32_t timeout, const char* refresher)
{
int ret = tmedia_defaults_set_inv_session_expires(timeout);
ret &= tmedia_defaults_set_inv_session_refresher(refresher);
return (ret == 0);
}
bool MediaSessionMgr::defaultsSetSRtpMode(tmedia_srtp_mode_t mode)
{
return (tmedia_defaults_set_srtp_mode(mode) == 0);
}
tmedia_srtp_mode_t MediaSessionMgr::defaultsGetSRtpMode()
{
return tmedia_defaults_get_srtp_mode();
}
bool MediaSessionMgr::defaultsSetSRtpType(tmedia_srtp_type_t srtp_type)
{
return (tmedia_defaults_set_srtp_type(srtp_type) == 0);
}
tmedia_srtp_type_t MediaSessionMgr::defaultsGetSRtpType()
{
return tmedia_defaults_get_srtp_type();
}
bool MediaSessionMgr::defaultsSetRtcpEnabled(bool enabled)
{
return (tmedia_defaults_set_rtcp_enabled(enabled ? tsk_true : tsk_false) == 0);
}
bool MediaSessionMgr::defaultsGetRtcpEnabled()
{
return (tmedia_defaults_get_rtcp_enabled() == tsk_true);
}
bool MediaSessionMgr::defaultsSetRtcpMuxEnabled(bool enabled)
{
return (tmedia_defaults_set_rtcpmux_enabled(enabled ? tsk_true : tsk_false) == 0);
}
bool MediaSessionMgr::defaultsGetRtcpMuxEnabled()
{
return (tmedia_defaults_get_rtcpmux_enabled() == tsk_true);
}
bool MediaSessionMgr::defaultsSetStunEnabled(bool stun_enabled)
{
return (tmedia_defaults_set_stun_enabled(stun_enabled ? tsk_true : tsk_false) == 0);
}
bool MediaSessionMgr::defaultsSetIceStunEnabled(bool icestun_enabled)
{
return (tmedia_defaults_set_icestun_enabled(icestun_enabled ? tsk_true : tsk_false) == 0);
}
bool MediaSessionMgr::defaultsSetIceTurnEnabled(bool iceturn_enabled)
{
return (tmedia_defaults_set_iceturn_enabled(iceturn_enabled ? tsk_true : tsk_false) == 0);
}
bool MediaSessionMgr::defaultsSetStunServer(const char* server_ip, uint16_t server_port)
{
return (tmedia_defaults_set_stun_server(server_ip, server_port) == 0);
}
bool MediaSessionMgr::defaultsSetStunCred(const char* username, const char* password)
{
return (tmedia_defaults_set_stun_cred(username, password) == 0);
}
bool MediaSessionMgr::defaultsSetIceEnabled(bool ice_enabled)
{
return (tmedia_defaults_set_ice_enabled(ice_enabled ? tsk_true : tsk_false) == 0);
}
bool MediaSessionMgr::defaultsSetByPassEncoding(bool enabled)
{
return (tmedia_defaults_set_bypass_encoding(enabled ? tsk_true : tsk_false) == 0);
}
bool MediaSessionMgr::defaultsGetByPassEncoding()
{
return (tmedia_defaults_get_bypass_encoding() == tsk_true);
}
bool MediaSessionMgr::defaultsSetByPassDecoding(bool enabled)
{
return (tmedia_defaults_set_bypass_decoding(enabled ? tsk_true : tsk_false) == 0);
}
bool MediaSessionMgr::defaultsGetByPassDecoding()
{
return (tmedia_defaults_get_bypass_decoding() == tsk_true);
}
bool MediaSessionMgr::defaultsSetVideoJbEnabled(bool enabled)
{
return (tmedia_defaults_set_videojb_enabled(enabled ? tsk_true : tsk_false) == 0);
}
bool MediaSessionMgr::defaultsGetVideoJbEnabled()
{
return (tmedia_defaults_get_videojb_enabled() == tsk_true);
}
bool MediaSessionMgr::defaultsSetVideoZeroArtifactsEnabled(bool enabled)
{
return (tmedia_defaults_set_video_zeroartifacts_enabled(enabled ? tsk_true : tsk_false) == 0);
}
bool MediaSessionMgr::defaultsGetVideoZeroArtifactsEnabled()
{
return (tmedia_defaults_get_video_zeroartifacts_enabled() == tsk_true);
}
bool MediaSessionMgr::defaultsSetRtpBuffSize(unsigned buffSize)
{
return (tmedia_defaults_set_rtpbuff_size(buffSize) == 0);
}
unsigned MediaSessionMgr::defaultsGetRtpBuffSize()
{
return tmedia_defaults_get_rtpbuff_size();
}
bool MediaSessionMgr::defaultsSetAvpfTail(unsigned tail_min, unsigned tail_max)
{
return (tmedia_defaults_set_avpf_tail(tail_min, tail_max) == 0);
}
bool MediaSessionMgr::defaultsSetAvpfMode(enum tmedia_mode_e mode)
{
return (tmedia_defaults_set_avpf_mode(mode) == 0);
}
bool MediaSessionMgr::defaultsSetOpusMaxCaptureRate(uint32_t opus_maxcapturerate)
{
return (tmedia_defaults_set_opus_maxcapturerate(opus_maxcapturerate) == 0);
}
bool MediaSessionMgr::defaultsSetOpusMaxPlaybackRate(uint32_t opus_maxplaybackrate)
{
return (tmedia_defaults_set_opus_maxplaybackrate(opus_maxplaybackrate) == 0);
}
bool MediaSessionMgr::defaultsSetMaxFds(int32_t max_fds)
{
return (tmedia_defaults_set_max_fds(max_fds) == 0);
}