blob: 8b56b8b4f10a529f9b9a3b3e0814214d1664b769 [file] [log] [blame]
/*
* Copyright 2017 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "pc/rtptransceiver.h"
#include <string>
#include "pc/rtpmediautils.h"
namespace webrtc {
RtpTransceiver::RtpTransceiver(cricket::MediaType media_type)
: unified_plan_(false), media_type_(media_type) {
RTC_DCHECK(media_type == cricket::MEDIA_TYPE_AUDIO ||
media_type == cricket::MEDIA_TYPE_VIDEO);
}
RtpTransceiver::RtpTransceiver(
rtc::scoped_refptr<RtpSenderProxyWithInternal<RtpSenderInternal>> sender,
rtc::scoped_refptr<RtpReceiverProxyWithInternal<RtpReceiverInternal>>
receiver)
: unified_plan_(true), media_type_(sender->media_type()) {
RTC_DCHECK(media_type_ == cricket::MEDIA_TYPE_AUDIO ||
media_type_ == cricket::MEDIA_TYPE_VIDEO);
RTC_DCHECK_EQ(sender->media_type(), receiver->media_type());
senders_.push_back(sender);
receivers_.push_back(receiver);
}
RtpTransceiver::~RtpTransceiver() {
Stop();
}
void RtpTransceiver::SetChannel(cricket::ChannelInterface* channel) {
// Cannot set a non-null channel on a stopped transceiver.
if (stopped_ && channel) {
return;
}
if (channel) {
RTC_DCHECK_EQ(media_type(), channel->media_type());
}
if (channel_) {
channel_->SignalFirstPacketReceived().disconnect(this);
}
channel_ = channel;
if (channel_) {
channel_->SignalFirstPacketReceived().connect(
this, &RtpTransceiver::OnFirstPacketReceived);
}
for (auto sender : senders_) {
sender->internal()->SetMediaChannel(channel_ ? channel_->media_channel()
: nullptr);
}
for (auto receiver : receivers_) {
if (!channel_) {
receiver->internal()->Stop();
}
receiver->internal()->SetMediaChannel(channel_ ? channel_->media_channel()
: nullptr);
}
}
void RtpTransceiver::AddSender(
rtc::scoped_refptr<RtpSenderProxyWithInternal<RtpSenderInternal>> sender) {
RTC_DCHECK(!stopped_);
RTC_DCHECK(!unified_plan_);
RTC_DCHECK(sender);
RTC_DCHECK_EQ(media_type(), sender->media_type());
RTC_DCHECK(std::find(senders_.begin(), senders_.end(), sender) ==
senders_.end());
senders_.push_back(sender);
}
bool RtpTransceiver::RemoveSender(RtpSenderInterface* sender) {
RTC_DCHECK(!unified_plan_);
if (sender) {
RTC_DCHECK_EQ(media_type(), sender->media_type());
}
auto it = std::find(senders_.begin(), senders_.end(), sender);
if (it == senders_.end()) {
return false;
}
(*it)->internal()->Stop();
senders_.erase(it);
return true;
}
void RtpTransceiver::AddReceiver(
rtc::scoped_refptr<RtpReceiverProxyWithInternal<RtpReceiverInternal>>
receiver) {
RTC_DCHECK(!stopped_);
RTC_DCHECK(!unified_plan_);
RTC_DCHECK(receiver);
RTC_DCHECK_EQ(media_type(), receiver->media_type());
RTC_DCHECK(std::find(receivers_.begin(), receivers_.end(), receiver) ==
receivers_.end());
receivers_.push_back(receiver);
}
bool RtpTransceiver::RemoveReceiver(RtpReceiverInterface* receiver) {
RTC_DCHECK(!unified_plan_);
if (receiver) {
RTC_DCHECK_EQ(media_type(), receiver->media_type());
}
auto it = std::find(receivers_.begin(), receivers_.end(), receiver);
if (it == receivers_.end()) {
return false;
}
(*it)->internal()->Stop();
receivers_.erase(it);
return true;
}
rtc::scoped_refptr<RtpSenderInternal> RtpTransceiver::sender_internal() const {
RTC_DCHECK(unified_plan_);
RTC_CHECK_EQ(1u, senders_.size());
return senders_[0]->internal();
}
rtc::scoped_refptr<RtpReceiverInternal> RtpTransceiver::receiver_internal()
const {
RTC_DCHECK(unified_plan_);
RTC_CHECK_EQ(1u, receivers_.size());
return receivers_[0]->internal();
}
cricket::MediaType RtpTransceiver::media_type() const {
return media_type_;
}
absl::optional<std::string> RtpTransceiver::mid() const {
return mid_;
}
void RtpTransceiver::OnFirstPacketReceived(cricket::ChannelInterface*) {
for (auto receiver : receivers_) {
receiver->internal()->NotifyFirstPacketReceived();
}
}
rtc::scoped_refptr<RtpSenderInterface> RtpTransceiver::sender() const {
RTC_DCHECK(unified_plan_);
RTC_CHECK_EQ(1u, senders_.size());
return senders_[0];
}
rtc::scoped_refptr<RtpReceiverInterface> RtpTransceiver::receiver() const {
RTC_DCHECK(unified_plan_);
RTC_CHECK_EQ(1u, receivers_.size());
return receivers_[0];
}
void RtpTransceiver::set_current_direction(RtpTransceiverDirection direction) {
RTC_LOG(LS_INFO) << "Changing transceiver (MID=" << mid_.value_or("<not set>")
<< ") current direction from "
<< (current_direction_ ? RtpTransceiverDirectionToString(
*current_direction_)
: "<not set>")
<< " to " << RtpTransceiverDirectionToString(direction)
<< ".";
current_direction_ = direction;
if (RtpTransceiverDirectionHasSend(*current_direction_)) {
has_ever_been_used_to_send_ = true;
}
}
void RtpTransceiver::set_fired_direction(RtpTransceiverDirection direction) {
fired_direction_ = direction;
}
bool RtpTransceiver::stopped() const {
return stopped_;
}
RtpTransceiverDirection RtpTransceiver::direction() const {
return direction_;
}
void RtpTransceiver::SetDirection(RtpTransceiverDirection new_direction) {
if (stopped()) {
return;
}
if (new_direction == direction_) {
return;
}
direction_ = new_direction;
SignalNegotiationNeeded();
}
absl::optional<RtpTransceiverDirection> RtpTransceiver::current_direction()
const {
return current_direction_;
}
absl::optional<RtpTransceiverDirection> RtpTransceiver::fired_direction()
const {
return fired_direction_;
}
void RtpTransceiver::Stop() {
for (auto sender : senders_) {
sender->internal()->Stop();
}
for (auto receiver : receivers_) {
receiver->internal()->Stop();
}
stopped_ = true;
current_direction_ = absl::nullopt;
}
void RtpTransceiver::SetCodecPreferences(
rtc::ArrayView<RtpCodecCapability> codecs) {
// TODO(steveanton): Implement this.
RTC_NOTREACHED() << "Not implemented";
}
} // namespace webrtc