260 lines
8.2 KiB
C++
260 lines
8.2 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 <functional>
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#include <cstring>
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//todo wywalić
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#define THIS_FILE "mumsi"
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using namespace std;
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/**
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* This is global, because there's no way to pass it's value to onCallMediaState callback.
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*/
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static int mediaPortSlot;
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static void onCallMediaState(pjsua_call_id call_id) {
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pjsua_call_info ci;
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pjsua_call_get_info(call_id, &ci);
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if (ci.media_status == PJSUA_CALL_MEDIA_ACTIVE) {
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pjsua_conf_connect(ci.conf_slot, mediaPortSlot);
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pjsua_conf_connect(mediaPortSlot, ci.conf_slot);
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}
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}
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static void onIncomingCall(pjsua_acc_id acc_id,
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pjsua_call_id call_id,
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pjsip_rx_data *rdata) {
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pjsua_call_info ci;
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PJ_UNUSED_ARG(acc_id);
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PJ_UNUSED_ARG(rdata);
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pjsua_call_get_info(call_id, &ci);
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PJ_LOG(3, (THIS_FILE, "Incoming call from %.*s!!",
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(int) ci.remote_info.slen,
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ci.remote_info.ptr));
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/* Automatically answer incoming calls with 200/OK */
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pjsua_call_answer(call_id, 200, NULL, NULL);
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}
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static void onCallState(pjsua_call_id call_id,
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pjsip_event *e) {
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pjsua_call_info ci;
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PJ_UNUSED_ARG(e);
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pjsua_call_get_info(call_id, &ci);
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PJ_LOG(3, (THIS_FILE, "Call %d state=%.*s", call_id,
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(int) ci.state_text.slen,
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ci.state_text.ptr));
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}
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sip::PjsuaCommunicator::PjsuaCommunicator(
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std::string host,
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std::string user,
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std::string password) : logger(log4cpp::Category::getInstance("SipCommunicator")),
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callbackLogger(log4cpp::Category::getInstance("SipCommunicatorCallback")) {
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pj_status_t status;
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status = pjsua_create();
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if (status != PJ_SUCCESS) {
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throw sip::Exception("Error in pjsua_create()", status);
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}
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pjsua_config generalConfig;
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pjsua_config_default(&generalConfig);
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generalConfig.user_agent = toPjString("Mumsi Mumble-SIP Bridge");
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generalConfig.max_calls = 1;
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generalConfig.cb.on_incoming_call = &onIncomingCall;
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generalConfig.cb.on_call_media_state = &onCallMediaState;
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generalConfig.cb.on_call_state = &onCallState;
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//todo zrobić coś z logami
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pjsua_logging_config logConfig;
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pjsua_logging_config_default(&logConfig);
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logConfig.console_level = 4;
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status = pjsua_init(&generalConfig, &logConfig, NULL);
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if (status != PJ_SUCCESS) {
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throw sip::Exception("Error in pjsua_init()", status);
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}
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pjsua_set_null_snd_dev();
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/* Add UDP transport. */
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pjsua_transport_config transportConfig;
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pjsua_transport_config_default(&transportConfig);
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transportConfig.port = sip::SIP_PORT;
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status = pjsua_transport_create(PJSIP_TRANSPORT_UDP, &transportConfig, NULL);
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if (status != PJ_SUCCESS) {
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throw sip::Exception("Error creating transport", status);
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}
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pj_caching_pool cachingPool;
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pj_caching_pool_init(&cachingPool, &pj_pool_factory_default_policy, 0);
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pj_pool_t *pool = pj_pool_create(&cachingPool.factory, "wav", 32768, 8192, nullptr);
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// create circular buffers
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pjmedia_circ_buf_create(pool, 960 * 10, &inputBuff);
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pjmedia_circ_buf_create(pool, 960 * 10, &outputBuff);
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mediaPort = createMediaPort();
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pjsua_conf_add_port(pool, mediaPort, &mediaPortSlot);
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/* Initialization is done, now start sip */
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status = pjsua_start();
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if (status != PJ_SUCCESS) {
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throw sip::Exception("Error starting sip", 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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pjsua_destroy();
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}
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pjmedia_port *sip::PjsuaCommunicator::createMediaPort() {
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pjmedia_port *mp = new pjmedia_port();
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pj_str_t name = toPjString("Pjsuamp");
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pj_status_t status = pjmedia_port_info_init(&(mp->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 * 20 / 1000); // todo recalculate to match mumble specs
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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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mp->get_frame = &MediaPort_getFrameRawCallback;
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mp->put_frame = &MediaPort_putFrameRawCallback;
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mp->port_data.pdata = this;
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return mp;
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}
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pj_status_t sip::MediaPort_getFrameRawCallback(pjmedia_port *port,
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pjmedia_frame *frame) {
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PjsuaCommunicator *communicator = static_cast<PjsuaCommunicator *>(port->port_data.pdata);
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frame->type = PJMEDIA_FRAME_TYPE_AUDIO;
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return communicator->mediaPortGetFrame(frame);
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}
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pj_status_t sip::MediaPort_putFrameRawCallback(pjmedia_port *port,
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pjmedia_frame *frame) {
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PjsuaCommunicator *communicator = static_cast<PjsuaCommunicator *>(port->port_data.pdata);
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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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communicator->mediaPortPutFrame(samples, count);
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return PJ_SUCCESS;
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}
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pj_status_t sip::PjsuaCommunicator::mediaPortGetFrame(pjmedia_frame *frame) {
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std::unique_lock<std::mutex> lock(inBuffAccessMutex);
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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(&mediaPort->info);
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pj_size_t availableSamples = pjmedia_circ_buf_get_len(inputBuff);
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const int samplesToRead = std::min(count, availableSamples);
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callbackLogger.debug("Pulling %d samples from in-buff.", samplesToRead);
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pjmedia_circ_buf_read(inputBuff, samples, samplesToRead);
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if (availableSamples < count) {
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callbackLogger.debug("Requested %d samples, available %d, filling remaining with zeros.", count,
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availableSamples);
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std::memset(&(samples[availableSamples]), 0, sizeof(pj_int16_t) * (count - availableSamples));
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}
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return PJ_SUCCESS;
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}
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void sip::PjsuaCommunicator::mediaPortPutFrame(pj_int16_t *samples, pj_size_t count) {
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std::unique_lock<std::mutex> lock(outBuffAccessMutex);
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callbackLogger.debug("Pushing %d samples to out-buff.", count);
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pjmedia_circ_buf_write(outputBuff, samples, count);
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lock.unlock();
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outBuffCondVar.notify_all();
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}
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void sip::PjsuaCommunicator::registerAccount(string host, string user, string password) {
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pjsua_acc_config accConfig;
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pjsua_acc_config_default(&accConfig);
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accConfig.id = toPjString(string("sip:") + user + "@" + host);
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accConfig.reg_uri = toPjString(string("sip:") + host);
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accConfig.cred_count = 1;
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accConfig.cred_info[0].realm = toPjString(host);
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accConfig.cred_info[0].scheme = toPjString("digest");
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accConfig.cred_info[0].username = toPjString(user);
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accConfig.cred_info[0].data_type = PJSIP_CRED_DATA_PLAIN_PASSWD;
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accConfig.cred_info[0].data = toPjString(password);
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pjsua_acc_id acc_id;
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pj_status_t status = pjsua_acc_add(&accConfig, PJ_TRUE, &acc_id);
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if (status != PJ_SUCCESS) {
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throw sip::Exception("failed to register account", status);
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}
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}
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void sip::PjsuaCommunicator::pushSamples(int16_t *samples, unsigned int length) {
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std::unique_lock<std::mutex> lock(inBuffAccessMutex);
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callbackLogger.debug("Pushing %d samples to in-buff.", length);
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pjmedia_circ_buf_write(inputBuff, samples, length);
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}
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unsigned int sip::PjsuaCommunicator::pullSamples(int16_t *samples, unsigned int length, bool waitWhenEmpty) {
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std::unique_lock<std::mutex> lock(outBuffAccessMutex);
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unsigned int availableSamples;
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while ((availableSamples = pjmedia_circ_buf_get_len(inputBuff)) < length) {
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callbackLogger.debug("Not enough samples in buffer: %d, requested %d. Waiting.", availableSamples, length);
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outBuffCondVar.wait(lock);
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}
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const int samplesToRead = std::min(length, availableSamples);
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callbackLogger.debug("Pulling %d samples from out-buff.", samplesToRead);
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pjmedia_circ_buf_read(inputBuff, samples, samplesToRead);
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return samplesToRead;
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}
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