76e62b0d38
BUG=webrtc:163 Review-Url: https://codereview.webrtc.org/2913793002 Cr-Commit-Position: refs/heads/master@{#18345}
59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
/*
|
|
* Copyright (c) 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 <utility>
|
|
|
|
#include "webrtc/call/rtx_receive_stream.h"
|
|
#include "webrtc/modules/rtp_rtcp/source/rtp_packet_received.h"
|
|
|
|
namespace webrtc {
|
|
|
|
RtxReceiveStream::RtxReceiveStream(
|
|
RtpPacketSinkInterface* media_sink,
|
|
std::map<int, int> rtx_payload_type_map,
|
|
uint32_t media_ssrc)
|
|
: media_sink_(media_sink),
|
|
rtx_payload_type_map_(std::move(rtx_payload_type_map)),
|
|
media_ssrc_(media_ssrc) {}
|
|
|
|
RtxReceiveStream::~RtxReceiveStream() = default;
|
|
|
|
void RtxReceiveStream::OnRtpPacket(const RtpPacketReceived& rtx_packet) {
|
|
rtc::ArrayView<const uint8_t> payload = rtx_packet.payload();
|
|
|
|
if (payload.size() < kRtxHeaderSize) {
|
|
return;
|
|
}
|
|
|
|
auto it = rtx_payload_type_map_.find(rtx_packet.PayloadType());
|
|
if (it == rtx_payload_type_map_.end()) {
|
|
return;
|
|
}
|
|
RtpPacketReceived media_packet;
|
|
media_packet.CopyHeaderFrom(rtx_packet);
|
|
|
|
media_packet.SetSsrc(media_ssrc_);
|
|
media_packet.SetSequenceNumber((payload[0] << 8) + payload[1]);
|
|
media_packet.SetPayloadType(it->second);
|
|
|
|
// Skip the RTX header.
|
|
rtc::ArrayView<const uint8_t> rtx_payload =
|
|
payload.subview(kRtxHeaderSize);
|
|
|
|
uint8_t* media_payload = media_packet.AllocatePayload(rtx_payload.size());
|
|
RTC_DCHECK(media_payload != nullptr);
|
|
|
|
memcpy(media_payload, rtx_payload.data(), rtx_payload.size());
|
|
|
|
media_sink_->OnRtpPacket(media_packet);
|
|
}
|
|
|
|
} // namespace webrtc
|