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268 lines
8.8 KiB
268 lines
8.8 KiB
/*
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* libjingle
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* Copyright 2004--2005, Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "talk/base/logging.h"
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#include "talk/session/receiver.h"
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#include "talk/session/phone/phonesessionclient.h"
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#include "talk/xmllite/qname.h"
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namespace {
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const std::string NS_PHONE("http://www.google.com/session/phone");
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const std::string NS_EMPTY("");
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const buzz::QName QN_PHONE_DESCRIPTION(true, NS_PHONE, "description");
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const buzz::QName QN_PHONE_PAYLOADTYPE(true, NS_PHONE, "payload-type");
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const buzz::QName QN_PHONE_PAYLOADTYPE_ID(true, NS_EMPTY, "id");
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const buzz::QName QN_PHONE_PAYLOADTYPE_NAME(true, NS_EMPTY, "name");
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}
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namespace cricket {
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PhoneSessionClient::PhoneSessionClient(const buzz::Jid& jid,
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SessionManager *manager) : jid_(jid), SessionClient(manager) {
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// No call to start, and certainly no call with focus
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focus_call_ = NULL;
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// Start up the channel manager on a worker thread
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channel_manager_ = new ChannelManager(session_manager_->worker_thread());
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}
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PhoneSessionClient::~PhoneSessionClient() {
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// Destroy all calls
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std::map<uint32, Call *>::iterator it;
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while (calls_.begin() != calls_.end()) {
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std::map<uint32, Call *>::iterator it = calls_.begin();
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DestroyCall((*it).second);
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}
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// Delete channel manager. This will wait for the channels to exit
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delete channel_manager_;
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}
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const std::string &PhoneSessionClient::GetSessionDescriptionName() {
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return NS_PHONE;
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}
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PhoneSessionDescription* PhoneSessionClient::CreateOfferSessionDescription() {
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PhoneSessionDescription* session_desc = new PhoneSessionDescription();
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MediaEngine *me = channel_manager_->media_engine();
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std::vector<MediaEngine::Codec> codecs = me->codecs();
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std::vector<MediaEngine::Codec>::iterator i;
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for (i = codecs.begin(); i < codecs.end(); i++)
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session_desc->AddCodec(*i);
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session_desc->Sort();
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return session_desc;
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}
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PhoneSessionDescription* PhoneSessionClient::CreateAcceptSessionDescription(const SessionDescription* offer) {
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const PhoneSessionDescription* offer_desc =
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static_cast<const PhoneSessionDescription*>(offer);
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PhoneSessionDescription* accept_desc = new PhoneSessionDescription();
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std::vector<MediaEngine::Codec> codecs = channel_manager_->media_engine()->codecs();
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std::vector<MediaEngine::Codec>::iterator iter;
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for (unsigned int i = 0; i < offer_desc->codecs().size(); ++i) {
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for (iter = codecs.begin(); iter < codecs.end(); iter++) {
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if ((*iter).name == offer_desc->codecs()[i].name)
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accept_desc->AddCodec(*iter);
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}
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}
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accept_desc->Sort();
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return accept_desc;
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}
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bool PhoneSessionClient::FindMediaCodec(MediaEngine* me,
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const PhoneSessionDescription* desc,
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const char** codec) {
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for (size_t i = 0; i < desc->codecs().size(); ++i) {
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if (me->FindCodec(desc->codecs()[i].name.c_str()))
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*codec = desc->codecs()[i].name.c_str();
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return true;
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}
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return false;
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}
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const SessionDescription *PhoneSessionClient::CreateSessionDescription(const buzz::XmlElement *element) {
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PhoneSessionDescription* desc = new PhoneSessionDescription();
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const buzz::XmlElement* payload_type = element->FirstNamed(QN_PHONE_PAYLOADTYPE);
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int num_payload_types = 0;
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while (payload_type) {
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if (payload_type->HasAttr(QN_PHONE_PAYLOADTYPE_ID) &&
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payload_type->HasAttr(QN_PHONE_PAYLOADTYPE_NAME)) {
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int id = atoi(payload_type->Attr(QN_PHONE_PAYLOADTYPE_ID).c_str());
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int pref = 0;
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std::string name = payload_type->Attr(QN_PHONE_PAYLOADTYPE_NAME);
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desc->AddCodec(MediaEngine::Codec(id, name, 0));
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}
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payload_type = payload_type->NextNamed(QN_PHONE_PAYLOADTYPE);
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num_payload_types += 1;
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}
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// For backward compatability, we can assume the other client is (an old
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// version of Talk) if it has no payload types at all.
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if (num_payload_types == 0) {
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desc->AddCodec(MediaEngine::Codec(103, "ISAC", 1));
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desc->AddCodec(MediaEngine::Codec(0, "PCMU", 0));
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}
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return desc;
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}
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buzz::XmlElement *PhoneSessionClient::TranslateSessionDescription(const SessionDescription *_session_desc) {
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const PhoneSessionDescription* session_desc =
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static_cast<const PhoneSessionDescription*>(_session_desc);
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buzz::XmlElement* description = new buzz::XmlElement(QN_PHONE_DESCRIPTION, true);
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for (size_t i = 0; i < session_desc->codecs().size(); ++i) {
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buzz::XmlElement* payload_type = new buzz::XmlElement(QN_PHONE_PAYLOADTYPE, true);
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char buf[32];
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sprintf(buf, "%d", session_desc->codecs()[i].id);
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payload_type->AddAttr(QN_PHONE_PAYLOADTYPE_ID, buf);
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payload_type->AddAttr(QN_PHONE_PAYLOADTYPE_NAME,
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session_desc->codecs()[i].name.c_str());
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description->AddElement(payload_type);
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}
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return description;
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}
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Call *PhoneSessionClient::CreateCall() {
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Call *call = new Call(this);
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calls_[call->id()] = call;
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SignalCallCreate(call);
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return call;
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}
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void PhoneSessionClient::OnSessionCreate(Session *session, bool received_initiate) {
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if (received_initiate) {
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session->SignalState.connect(this, &PhoneSessionClient::OnSessionState);
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Call *call = CreateCall();
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session_map_[session->id()] = call;
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call->AddSession(session);
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}
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}
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void PhoneSessionClient::OnSessionState(Session *session, Session::State state) {
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if (state == Session::STATE_RECEIVEDINITIATE) {
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// If our accept would have no codecs, then we must reject this call.
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PhoneSessionDescription* accept_desc =
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CreateAcceptSessionDescription(session->remote_description());
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if (accept_desc->codecs().size() == 0) {
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// TODO: include an error description with the rejection.
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session->Reject();
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}
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delete accept_desc;
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}
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}
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void PhoneSessionClient::DestroyCall(Call *call) {
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// Change focus away, signal destruction
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if (call == focus_call_)
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SetFocus(NULL);
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SignalCallDestroy(call);
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// Remove it from calls_ map and delete
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std::map<uint32, Call *>::iterator it = calls_.find(call->id());
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if (it != calls_.end())
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calls_.erase(it);
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delete call;
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}
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void PhoneSessionClient::OnSessionDestroy(Session *session) {
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// Find the call this session is in, remove it
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std::map<SessionID, Call *>::iterator it = session_map_.find(session->id());
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assert(it != session_map_.end());
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if (it != session_map_.end()) {
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Call *call = (*it).second;
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session_map_.erase(it);
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call->RemoveSession(session);
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}
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}
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Call *PhoneSessionClient::GetFocus() {
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return focus_call_;
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}
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void PhoneSessionClient::SetFocus(Call *call) {
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Call *old_focus_call = focus_call_;
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if (focus_call_ != call) {
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if (focus_call_ != NULL)
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focus_call_->EnableChannels(false);
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focus_call_ = call;
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if (focus_call_ != NULL)
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focus_call_->EnableChannels(true);
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SignalFocus(focus_call_, old_focus_call);
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}
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}
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void PhoneSessionClient::JoinCalls(Call *call_to_join, Call *call) {
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// Move all sessions from call to call_to_join, delete call.
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// If call_to_join has focus, added sessions should have enabled channels.
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if (focus_call_ == call)
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SetFocus(NULL);
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call_to_join->Join(call, focus_call_ == call_to_join);
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DestroyCall(call);
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}
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Session *PhoneSessionClient::CreateSession(Call *call) {
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Session *session = session_manager_->CreateSession(
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GetSessionDescriptionName(), jid().Str());
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session_map_[session->id()] = call;
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return session;
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}
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ChannelManager *PhoneSessionClient::channel_manager() {
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return channel_manager_;
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}
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const buzz::Jid &PhoneSessionClient::jid() const {
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return jid_;
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}
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const buzz::Jid &PhoneSessionClient::GetJid() const {
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return jid_;
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}
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}
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