/*
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* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/video/payload_router.h"
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#include "webrtc/base/checks.h"
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#include "webrtc/modules/rtp_rtcp/include/rtp_rtcp.h"
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#include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
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#include "webrtc/system_wrappers/include/critical_section_wrapper.h"
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namespace webrtc {
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PayloadRouter::PayloadRouter()
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: crit_(CriticalSectionWrapper::CreateCriticalSection()),
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active_(false) {}
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PayloadRouter::~PayloadRouter() {}
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size_t PayloadRouter::DefaultMaxPayloadLength() {
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const size_t kIpUdpSrtpLength = 44;
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return IP_PACKET_SIZE - kIpUdpSrtpLength;
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}
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void PayloadRouter::SetSendingRtpModules(
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const std::list<RtpRtcp*>& rtp_modules) {
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CriticalSectionScoped cs(crit_.get());
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rtp_modules_.clear();
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rtp_modules_.reserve(rtp_modules.size());
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for (auto* rtp_module : rtp_modules) {
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rtp_modules_.push_back(rtp_module);
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}
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}
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void PayloadRouter::set_active(bool active) {
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CriticalSectionScoped cs(crit_.get());
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active_ = active;
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}
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bool PayloadRouter::active() {
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CriticalSectionScoped cs(crit_.get());
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return active_ && !rtp_modules_.empty();
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}
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bool PayloadRouter::RoutePayload(FrameType frame_type,
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int8_t payload_type,
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uint32_t time_stamp,
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int64_t capture_time_ms,
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const uint8_t* payload_data,
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size_t payload_length,
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const RTPFragmentationHeader* fragmentation,
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const RTPVideoHeader* rtp_video_hdr) {
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CriticalSectionScoped cs(crit_.get());
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if (!active_ || rtp_modules_.empty())
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return false;
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// The simulcast index might actually be larger than the number of modules in
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// case the encoder was processing a frame during a codec reconfig.
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if (rtp_video_hdr != NULL &&
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rtp_video_hdr->simulcastIdx >= rtp_modules_.size())
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return false;
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int stream_idx = 0;
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if (rtp_video_hdr != NULL)
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stream_idx = rtp_video_hdr->simulcastIdx;
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return rtp_modules_[stream_idx]->SendOutgoingData(
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frame_type, payload_type, time_stamp, capture_time_ms, payload_data,
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payload_length, fragmentation, rtp_video_hdr) == 0 ? true : false;
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}
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void PayloadRouter::SetTargetSendBitrates(
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const std::vector<uint32_t>& stream_bitrates) {
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CriticalSectionScoped cs(crit_.get());
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if (stream_bitrates.size() < rtp_modules_.size()) {
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// There can be a size mis-match during codec reconfiguration.
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return;
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}
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int idx = 0;
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for (auto* rtp_module : rtp_modules_) {
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rtp_module->SetTargetSendBitrate(stream_bitrates[idx++]);
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}
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}
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size_t PayloadRouter::MaxPayloadLength() const {
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size_t min_payload_length = DefaultMaxPayloadLength();
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CriticalSectionScoped cs(crit_.get());
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for (auto* rtp_module : rtp_modules_) {
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size_t module_payload_length = rtp_module->MaxDataPayloadLength();
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if (module_payload_length < min_payload_length)
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min_payload_length = module_payload_length;
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}
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return min_payload_length;
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}
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} // namespace webrtc
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