std::string RtpConfig::ToString() const {
StringBuilder ss;
ss << "{ssrcs: [";
for (size_t i = 0; i < ssrcs.size(); ++i) {
ss << ssrcs[i];
if (i != ssrcs.size() - 1)
ss << ", ";
}
ss << "], rids: [";
for (size_t i = 0; i < rids.size(); ++i) {
ss << rids[i];
if (i != rids.size() - 1)
ss << ", ";
}
ss << "], mid: '" << mid << "'";
ss << ", rtcp_mode: "
<< (rtcp_mode == RtcpMode::kCompound ? "RtcpMode::kCompound"
: "RtcpMode::kReducedSize");
ss << ", max_packet_size: " << max_packet_size;
ss << ", extmap-allow-mixed: " << (extmap_allow_mixed ? "true" : "false");
ss << ", extensions: [";
for (size_t i = 0; i < extensions.size(); ++i) {
ss << extensions[i].ToString();
if (i != extensions.size() - 1)
ss << ", ";
}
ss << ']';
ss << ", lntf: " << lntf.ToString();
ss << ", nack: {rtp_history_ms: " << nack.rtp_history_ms << '}';
ss << ", ulpfec: " << ulpfec.ToString();
ss << ", payload_name: " << payload_name;
ss << ", payload_type: " << payload_type;
ss << ", raw_payload: " << (raw_payload ? "true" : "false");
ss << ", stream_configs: [";
for (size_t i = 0; i < stream_configs.size(); ++i) {
ss << stream_configs[i].ToString();
if (i != stream_configs.size() - 1)
ss << ", ";
}
ss << ']';
ss << ", flexfec: {payload_type: " << flexfec.payload_type;
ss << ", ssrc: " << flexfec.ssrc;
ss << ", protected_media_ssrcs: [";
for (size_t i = 0; i < flexfec.protected_media_ssrcs.size(); ++i) {
ss << flexfec.protected_media_ssrcs[i];
if (i != flexfec.protected_media_ssrcs.size() - 1)
ss << ", ";
}
ss << "]}";
ss << ", rtx: " << rtx.ToString();
ss << ", c_name: " << c_name;
ss << '}'; return ss.Release();
}
std::string RtpConfig::Rtx::ToString() const {
StringBuilder ss;
ss << "{ssrcs: [";
for (size_t i = 0; i < ssrcs.size(); ++i) {
ss << ssrcs[i];
if (i != ssrcs.size() - 1)
ss << ", ";
}
ss << ']';
ss << ", payload_type: " << payload_type;
ss << '}'; return ss.Release();
}
std::optional<uint32_t> RtpConfig::GetRtxSsrcAssociatedWithMediaSsrc(
uint32_t media_ssrc) const {
RTC_DCHECK(IsMediaSsrc(media_ssrc)); // If we don't use RTX there is no association.
if (rtx.ssrcs.empty()) return std::nullopt; // If we use RTX there MUST be an association ssrcs[i] <-> rtx.ssrcs[i].
RTC_DCHECK_EQ(ssrcs.size(), rtx.ssrcs.size()); return FindAssociatedSsrc(media_ssrc, ssrcs, rtx.ssrcs);
}
uint32_t RtpConfig::GetMediaSsrcAssociatedWithRtxSsrc(uint32_t rtx_ssrc) const {
RTC_DCHECK(IsRtxSsrc(rtx_ssrc)); // If we use RTX there MUST be an association ssrcs[i] <-> rtx.ssrcs[i].
RTC_DCHECK_EQ(ssrcs.size(), rtx.ssrcs.size()); return FindAssociatedSsrc(rtx_ssrc, rtx.ssrcs, ssrcs);
}
uint32_t RtpConfig::GetMediaSsrcAssociatedWithFlexfecSsrc(
uint32_t flexfec_ssrc) const {
RTC_DCHECK(IsFlexfecSsrc(flexfec_ssrc)); // If we use FlexFEC there MUST be an associated media ssrc. // // TODO(brandtr/hbos): The current implementation only supports an association // with a single media ssrc. If multiple ssrcs are to be supported in the // future, in order not to break GetStats()'s packet and byte counters, we // must be able to tell how many packets and bytes have contributed to which // SSRC.
RTC_DCHECK_EQ(1u, flexfec.protected_media_ssrcs.size());
uint32_t media_ssrc = flexfec.protected_media_ssrcs[0];
RTC_DCHECK(IsMediaSsrc(media_ssrc)); return media_ssrc;
}
std::optional<std::string> RtpConfig::GetRidForSsrc(uint32_t ssrc) const { auto it = std::find(ssrcs.begin(), ssrcs.end(), ssrc);
if (it != ssrcs.end()) {
size_t ssrc_index = std::distance(ssrcs.begin(), it);
if (ssrc_index < rids.size()) { return rids[ssrc_index];
}
} return std::nullopt;
}
RtpStreamConfig RtpConfig::GetStreamConfig(size_t index) const { // GetStreamConfig function usually returns stream_configs[index], but if // stream_configs is not initialized (i.e., index >= stream_configs.size()), // it creates and returns an RtpStreamConfig using fields such as ssrcs, rids, // payload_name, and payload_type from RtpConfig.
RTC_DCHECK_LT(index, ssrcs.size());
if (index < stream_configs.size()) { return stream_configs[index];
}
RtpStreamConfig stream_config;
stream_config.ssrc = ssrcs[index];
if (index < rids.size()) {
stream_config.rid = rids[index];
}
stream_config.payload_name = payload_name;
stream_config.payload_type = payload_type;
stream_config.raw_payload = raw_payload;
if (!rtx.ssrcs.empty()) {
RTC_DCHECK_EQ(ssrcs.size(), rtx.ssrcs.size()); auto& stream_config_rtx = stream_config.rtx.emplace(RtpStreamConfig::Rtx());
stream_config_rtx.ssrc = rtx.ssrcs[index];
stream_config_rtx.payload_type = rtx.payload_type;
}
return stream_config;
}
} // namespace webrtc
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