gecko-dev/media/mtransport/transportflow.cpp

103 строки
2.6 KiB
C++
Исходник Обычный вид История

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
// Original author: ekr@rtfm.com
#include <deque>
#include "transportflow.h"
#include "transportlayer.h"
namespace mozilla {
TransportFlow::~TransportFlow() {
for (std::deque<TransportLayer *>::iterator it = layers_.begin();
it != layers_.end(); ++it) {
delete *it;
}
}
nsresult TransportFlow::PushLayer(TransportLayer *layer) {
nsresult rv = layer->Init();
if (!NS_SUCCEEDED(rv))
return rv;
TransportLayer *old_layer = layers_.empty() ? nullptr : layers_.front();
// Re-target my signals to the new layer
if (old_layer) {
old_layer->SignalStateChange.disconnect(this);
old_layer->SignalPacketReceived.disconnect(this);
}
layer->SignalStateChange.connect(this, &TransportFlow::StateChange);
layer->SignalPacketReceived.connect(this, &TransportFlow::PacketReceived);
layers_.push_front(layer);
layer->Inserted(this, old_layer);
return NS_OK;
}
nsresult TransportFlow::PushLayers(std::queue<TransportLayer *> layers) {
nsresult rv;
while (!layers.empty()) {
rv = PushLayer(layers.front());
layers.pop();
if (NS_FAILED(rv)) {
// Destroy any layers we could not push.
while (!layers.empty()) {
delete layers.front();
layers.pop();
}
return rv;
}
}
return NS_OK;
}
TransportLayer *TransportFlow::top() const {
return layers_.empty() ? nullptr : layers_.front();
}
TransportLayer *TransportFlow::GetLayer(const std::string& id) const {
for (std::deque<TransportLayer *>::const_iterator it = layers_.begin();
it != layers_.end(); ++it) {
if ((*it)->id() == id)
return *it;
}
return nullptr;
}
TransportLayer::State TransportFlow::state() {
return top() ? top()->state() : TransportLayer::TS_NONE;
}
TransportResult TransportFlow::SendPacket(const unsigned char *data,
size_t len) {
return top() ? top()->SendPacket(data, len) : TE_ERROR;
}
void TransportFlow::StateChange(TransportLayer *layer,
TransportLayer::State state) {
SignalStateChange(this, state);
}
void TransportFlow::PacketReceived(TransportLayer* layer,
const unsigned char *data,
size_t len) {
SignalPacketReceived(this, data, len);
}
} // close namespace