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未选中的plan也返回到sdp中

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This commit is contained in:
xia-chu 2021-05-08 14:50:19 +08:00
parent 0d8a3ef790
commit c10296d432
1 changed files with 18 additions and 6 deletions
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24
webrtc/Sdp.cpp
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@ -1464,7 +1464,7 @@ RETRY:
WarnL << "answer sdp配置为ice_lite模式，与offer sdp中的ice_lite模式冲突";
continue;
}
const RtcCodecPlan *offer_plan_ptr = nullptr;
const RtcCodecPlan *selected_plan = nullptr;
for (auto &plan : offer_media.plan) {
//先检查编码格式是否为偏好
if (check_codec && getCodecId(plan.codec) != codec) {
@ -1475,10 +1475,10 @@ RETRY:
continue;
}
//找到中意的codec
offer_plan_ptr = &plan;
selected_plan = &plan;
break;
}
if (!offer_plan_ptr) {
if (!selected_plan) {
//offer中该媒体的所有的codec都不支持
continue;
}
@ -1542,27 +1542,32 @@ RETRY:
}
//添加媒体plan
answer_media.plan.emplace_back(*offer_plan_ptr);
answer_media.plan.emplace_back(*selected_plan);
onSelectPlan(answer_media.plan.back(), codec);
set<uint8_t> pt_selected = {selected_plan->pt};
//添加rtx,red,ulpfec plan
if (configure.support_red || configure.support_rtx || configure.support_ulpfec) {
for (auto &plan : offer_media.plan) {
if (!strcasecmp(plan.codec.data(), "rtx")) {
if (configure.support_rtx && atoi(plan.getFmtp("apt").data()) == offer_plan_ptr->pt) {
if (configure.support_rtx && atoi(plan.getFmtp("apt").data()) == selected_plan->pt) {
answer_media.plan.emplace_back(plan);
pt_selected.emplace(plan.pt);
}
continue;
}
if (!strcasecmp(plan.codec.data(), "red")) {
if (configure.support_red) {
answer_media.plan.emplace_back(plan);
pt_selected.emplace(plan.pt);
}
continue;
}
if (!strcasecmp(plan.codec.data(), "ulpfec")) {
if (configure.support_ulpfec) {
answer_media.plan.emplace_back(plan);
pt_selected.emplace(plan.pt);
}
continue;
}
@ -1579,12 +1584,19 @@ RETRY:
auto &rtcp_fb_ref = answer_media.plan[0].rtcp_fb;
rtcp_fb_ref.clear();
//对方和我方都支持的rtcpfb，那么我们才支持
for (auto &fp : offer_plan_ptr->rtcp_fb) {
for (auto &fp : selected_plan->rtcp_fb) {
if (configure.rtcp_fb.find(fp) != configure.rtcp_fb.end()) {
//对方该rtcp被我们支持
rtcp_fb_ref.emplace(fp);
}
}
//其他plan放在后面
for (auto &plan : offer_media.plan) {
if (pt_selected.find(plan.pt) == pt_selected.end()) {
answer_media.plan.emplace_back(plan);
}
}
ret->media.emplace_back(answer_media);
return;
}