зеркало из https://github.com/mozilla/gecko-dev.git
81 строка
2.6 KiB
C++
81 строка
2.6 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 "call/rtx_receive_stream.h"
|
|
|
|
#include <string.h>
|
|
|
|
#include <utility>
|
|
|
|
#include "api/array_view.h"
|
|
#include "modules/rtp_rtcp/include/receive_statistics.h"
|
|
#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
|
|
#include "modules/rtp_rtcp/source/rtp_packet_received.h"
|
|
#include "rtc_base/checks.h"
|
|
#include "rtc_base/logging.h"
|
|
|
|
namespace webrtc {
|
|
|
|
RtxReceiveStream::RtxReceiveStream(
|
|
RtpPacketSinkInterface* media_sink,
|
|
std::map<int, int> associated_payload_types,
|
|
uint32_t media_ssrc,
|
|
ReceiveStatistics* rtp_receive_statistics /* = nullptr */)
|
|
: media_sink_(media_sink),
|
|
associated_payload_types_(std::move(associated_payload_types)),
|
|
media_ssrc_(media_ssrc),
|
|
rtp_receive_statistics_(rtp_receive_statistics) {
|
|
if (associated_payload_types_.empty()) {
|
|
RTC_LOG(LS_WARNING)
|
|
<< "RtxReceiveStream created with empty payload type mapping.";
|
|
}
|
|
}
|
|
|
|
RtxReceiveStream::~RtxReceiveStream() = default;
|
|
|
|
void RtxReceiveStream::OnRtpPacket(const RtpPacketReceived& rtx_packet) {
|
|
if (rtp_receive_statistics_) {
|
|
rtp_receive_statistics_->OnRtpPacket(rtx_packet);
|
|
}
|
|
rtc::ArrayView<const uint8_t> payload = rtx_packet.payload();
|
|
|
|
if (payload.size() < kRtxHeaderSize) {
|
|
return;
|
|
}
|
|
|
|
auto it = associated_payload_types_.find(rtx_packet.PayloadType());
|
|
if (it == associated_payload_types_.end()) {
|
|
RTC_LOG(LS_VERBOSE) << "Unknown payload type "
|
|
<< static_cast<int>(rtx_packet.PayloadType())
|
|
<< " on rtx ssrc " << rtx_packet.Ssrc();
|
|
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);
|
|
media_packet.set_recovered(true);
|
|
media_packet.set_arrival_time_ms(rtx_packet.arrival_time_ms());
|
|
|
|
// 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
|