323 lines
10 KiB
C++
323 lines
10 KiB
C++
#include "PjsuaCommunicator.hpp"
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#include <pjlib.h>
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#include <pjsua-lib/pjsua.h>
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#include <boost/algorithm/string.hpp>
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#include <boost/format.hpp>
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using namespace std;
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namespace sip {
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using namespace log4cpp;
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class _LogWriter : public pj::LogWriter {
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public:
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_LogWriter(Category &logger)
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: logger(logger) { }
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virtual void write(const pj::LogEntry &entry) override {
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auto message = entry.msg.substr(0, entry.msg.size() - 1); // remove newline
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logger << prioritiesMap.at(entry.level) << message;
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}
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private:
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log4cpp::Category &logger;
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std::map<int, Priority::Value> prioritiesMap = {
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{1, Priority::ERROR},
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{2, Priority::WARN},
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{3, Priority::NOTICE},
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{4, Priority::INFO},
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{5, Priority::DEBUG},
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{6, Priority::DEBUG}
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};
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};
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class _MumlibAudioMedia : public pj::AudioMedia {
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public:
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_MumlibAudioMedia(sip::PjsuaCommunicator &comm, int frameTimeLength)
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: communicator(comm) {
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createMediaPort(frameTimeLength);
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registerMediaPort(&mediaPort);
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}
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~_MumlibAudioMedia() {
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unregisterMediaPort();
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}
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private:
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pjmedia_port mediaPort;
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sip::PjsuaCommunicator &communicator;
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static pj_status_t callback_getFrame(pjmedia_port *port, pjmedia_frame *frame) {
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auto *communicator = static_cast<sip::PjsuaCommunicator *>(port->port_data.pdata);
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return communicator->mediaPortGetFrame(port, frame);
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}
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static pj_status_t callback_putFrame(pjmedia_port *port, pjmedia_frame *frame) {
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auto *communicator = static_cast<sip::PjsuaCommunicator *>(port->port_data.pdata);
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return communicator->mediaPortPutFrame(port, frame);
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}
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void createMediaPort(int frameTimeLength) {
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auto name = pj_str((char *) "MumsiMediaPort");
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if (frameTimeLength != 10
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and frameTimeLength != 20
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and frameTimeLength != 40
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and frameTimeLength != 60) {
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throw sip::Exception(
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(boost::format("valid frame time length value: %d. valid values are: 10, 20, 40, 60") %
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frameTimeLength).str());
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}
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pj_status_t status = pjmedia_port_info_init(&(mediaPort.info),
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&name,
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PJMEDIA_SIG_CLASS_PORT_AUD('s', 'i'),
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SAMPLING_RATE,
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1,
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16,
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SAMPLING_RATE * frameTimeLength / 1000);
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if (status != PJ_SUCCESS) {
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throw sip::Exception("error while calling pjmedia_port_info_init()", status);
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}
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mediaPort.port_data.pdata = &communicator;
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mediaPort.get_frame = &callback_getFrame;
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mediaPort.put_frame = &callback_putFrame;
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}
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};
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class _Call : public pj::Call {
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public:
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_Call(sip::PjsuaCommunicator &comm, pj::Account &acc, int call_id = PJSUA_INVALID_ID)
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: pj::Call(acc, call_id),
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communicator(comm),
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account(acc) { }
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virtual void onCallState(pj::OnCallStateParam &prm) override;
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virtual void onCallMediaState(pj::OnCallMediaStateParam &prm) override;
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virtual void onDtmfDigit(pj::OnDtmfDigitParam &prm) override;
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private:
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sip::PjsuaCommunicator &communicator;
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pj::Account &account;
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};
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class _Account : public pj::Account {
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public:
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_Account(sip::PjsuaCommunicator &comm)
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: communicator(comm) { }
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virtual void onRegState(pj::OnRegStateParam &prm) override;
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virtual void onIncomingCall(pj::OnIncomingCallParam &iprm) override;
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private:
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sip::PjsuaCommunicator &communicator;
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bool available = true;
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friend class _Call;
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};
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void _Call::onCallState(pj::OnCallStateParam &prm) {
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auto ci = getInfo();
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communicator.logger.info("Call %d state=%s.", ci.id, ci.stateText.c_str());
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string address = ci.remoteUri;
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boost::replace_all(address, "<", "");
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boost::replace_all(address, ">", "");
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if (ci.state == PJSIP_INV_STATE_CONFIRMED) {
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auto msgText = "Incoming call from " + address + ".";
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communicator.logger.notice(msgText);
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communicator.onStateChange(msgText);
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} else if (ci.state == PJSIP_INV_STATE_DISCONNECTED) {
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auto &acc = dynamic_cast<_Account &>(account);
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if (not acc.available) {
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auto msgText = "Call from " + address + " finished.";
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communicator.mixer->clear();
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communicator.logger.notice(msgText);
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communicator.onStateChange(msgText);
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acc.available = true;
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}
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delete this;
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}
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}
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void _Call::onCallMediaState(pj::OnCallMediaStateParam &prm) {
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auto ci = getInfo();
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if (ci.media.size() != 1) {
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throw sip::Exception("ci.media.size is not 1");
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}
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if (ci.media[0].status == PJSUA_CALL_MEDIA_ACTIVE) {
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auto *aud_med = static_cast<pj::AudioMedia *>(getMedia(0));
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communicator.media->startTransmit(*aud_med);
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aud_med->startTransmit(*communicator.media);
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} else if (ci.media[0].status == PJSUA_CALL_MEDIA_NONE) {
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dynamic_cast<_Account &>(account).available = true;
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}
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}
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void _Call::onDtmfDigit(pj::OnDtmfDigitParam &prm) {
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communicator.logger.notice("DTMF digit '%s' (call %d).", prm.digit.c_str(), getId());
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}
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void _Account::onRegState(pj::OnRegStateParam &prm) {
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pj::AccountInfo ai = getInfo();
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communicator.logger << log4cpp::Priority::INFO
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<< (ai.regIsActive ? "Register:" : "Unregister:") << " code=" << prm.code;
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}
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void _Account::onIncomingCall(pj::OnIncomingCallParam &iprm) {
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auto *call = new _Call(communicator, *this, iprm.callId);
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string uri = call->getInfo().remoteUri;
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communicator.logger.info("Incoming call from %s.", uri.c_str());
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pj::CallOpParam param;
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if (communicator.uriValidator.validateUri(uri)) {
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if (available) {
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param.statusCode = PJSIP_SC_OK;
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available = false;
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} else {
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param.statusCode = PJSIP_SC_BUSY_EVERYWHERE;
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}
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call->answer(param);
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} else {
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communicator.logger.warn("Refusing call from %s.", uri.c_str());
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param.statusCode = PJSIP_SC_SERVICE_UNAVAILABLE;
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call->hangup(param);
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}
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}
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}
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sip::PjsuaCommunicator::PjsuaCommunicator(IncomingConnectionValidator &validator, int frameTimeLength)
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: logger(log4cpp::Category::getInstance("SipCommunicator")),
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pjsuaLogger(log4cpp::Category::getInstance("Pjsua")),
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uriValidator(validator) {
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logWriter.reset(new sip::_LogWriter(pjsuaLogger));
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endpoint.libCreate();
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pj::EpConfig endpointConfig;
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endpointConfig.uaConfig.userAgent = "Mumsi Mumble-SIP gateway";
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endpointConfig.uaConfig.maxCalls = 1;
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endpointConfig.logConfig.writer = logWriter.get();
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endpointConfig.logConfig.level = 5;
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endpointConfig.medConfig.noVad = true;
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endpoint.libInit(endpointConfig);
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pj_caching_pool_init(&cachingPool, &pj_pool_factory_default_policy, 0);
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mixer.reset(new mixer::AudioFramesMixer(cachingPool.factory));
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media.reset(new _MumlibAudioMedia(*this, frameTimeLength));
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logger.info("Created Pjsua communicator with frame length %d ms.", frameTimeLength);
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}
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void sip::PjsuaCommunicator::connect(
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std::string host,
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std::string user,
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std::string password,
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unsigned int port) {
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pj::TransportConfig transportConfig;
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transportConfig.port = port;
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endpoint.transportCreate(PJSIP_TRANSPORT_UDP, transportConfig); // todo try catch
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endpoint.libStart();
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pj_status_t status = pjsua_set_null_snd_dev();
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if (status != PJ_SUCCESS) {
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throw sip::Exception("error in pjsua_set_null_std_dev()", status);
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}
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registerAccount(host, user, password);
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}
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sip::PjsuaCommunicator::~PjsuaCommunicator() {
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endpoint.libDestroy();
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}
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void sip::PjsuaCommunicator::sendPcmSamples(int sessionId, int sequenceNumber, int16_t *samples, unsigned int length) {
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mixer->addFrameToBuffer(sessionId, sequenceNumber, samples, length);
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}
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pj_status_t sip::PjsuaCommunicator::mediaPortGetFrame(pjmedia_port *port, pjmedia_frame *frame) {
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frame->type = PJMEDIA_FRAME_TYPE_AUDIO;
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pj_int16_t *samples = static_cast<pj_int16_t *>(frame->buf);
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pj_size_t count = frame->size / 2 / PJMEDIA_PIA_CCNT(&(port->info));
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const int readSamples = mixer->getMixedSamples(samples, count);
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if (readSamples < count) {
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pjsuaLogger.debug("Requested %d samples, available %d, filling remaining with zeros.",
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count, readSamples);
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for (int i = readSamples; i < count; ++i) {
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samples[i] = 0;
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}
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}
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return PJ_SUCCESS;
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}
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pj_status_t sip::PjsuaCommunicator::mediaPortPutFrame(pjmedia_port *port, pjmedia_frame *frame) {
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pj_int16_t *samples = static_cast<pj_int16_t *>(frame->buf);
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pj_size_t count = frame->size / 2 / PJMEDIA_PIA_CCNT(&port->info);
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frame->type = PJMEDIA_FRAME_TYPE_AUDIO;
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if (count > 0) {
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pjsuaLogger.debug("Calling onIncomingPcmSamples with %d samples.", count);
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onIncomingPcmSamples(samples, count);
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}
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return PJ_SUCCESS;
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}
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void sip::PjsuaCommunicator::registerAccount(string host, string user, string password) {
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string uri = "sip:" + user + "@" + host;
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pj::AccountConfig accountConfig;
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accountConfig.idUri = uri;
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accountConfig.regConfig.registrarUri = "sip:" + host;
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pj::AuthCredInfo cred("digest", "*", user, 0, password);
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accountConfig.sipConfig.authCreds.push_back(cred);
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logger.info("Registering account for URI: %s.", uri.c_str());
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account.reset(new _Account(*this));
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account->create(accountConfig);
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} |