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RTC: webrtc偏好音视频codec可配置(#1214)

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This commit is contained in:
ziyue 2021-11-15 10:32:54 +08:00
parent a5fc3b04d3
commit a7d6e2ba38
2 changed files with 36 additions and 2 deletions
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6
conf/config.ini
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@ -234,6 +234,12 @@ port=8000
#设置remb比特率，非0时关闭twcc并开启remb。该设置在rtc推流时有效，可以控制推流画质
#目前已经实现twcc自动调整码率，关闭remb根据真实网络状况调整码率
rembBitRate=0
#rtc支持的音频codec类型,在前面的优先级更高
#以下范例为所有支持的音频codec
preferredCodecA=PCMU,PCMA,opus,mpeg4-generic
#rtc支持的视频codec类型,在前面的优先级更高
#以下范例为所有支持的视频codec
preferredCodecV=H264,H265,AV1X,VP9,VP8
[rtsp]
#rtsp专有鉴权方式是采用base64还是md5方式

32
webrtc/Sdp.cpp
View File

@ -13,6 +13,16 @@
#include <cinttypes>
using namespace mediakit;
namespace RTC {
#define RTC_FIELD "rtc."
const string kPreferredCodecA = RTC_FIELD"preferredCodecA";
const string kPreferredCodecV = RTC_FIELD"preferredCodecV";
static onceToken token([]() {
mINI::Instance()[kPreferredCodecA] = "PCMU,PCMA,opus,mpeg4-generic";
mINI::Instance()[kPreferredCodecV] = "H264,H265,AV1X,VP9,VP8";
});
}
using onCreateSdpItem = function<SdpItem::Ptr(const string &key, const string &value)>;
static map<string, onCreateSdpItem, StrCaseCompare> sdpItemCreator;
@ -1372,6 +1382,18 @@ void RtcConfigure::RtcTrackConfigure::enableREMB(bool enable){
}
}
static vector<CodecId> toCodecArray(const string &str){
vector<CodecId> ret;
auto vec = split(str, ",");
for (auto &s : vec) {
auto codec = getCodecId(trim(s));
if (codec != CodecInvalid) {
ret.emplace_back(codec);
}
}
return ret;
}
void RtcConfigure::RtcTrackConfigure::setDefaultSetting(TrackType type){
rtcp_mux = true;
rtcp_rsize = false;
@ -1385,7 +1407,10 @@ void RtcConfigure::RtcTrackConfigure::setDefaultSetting(TrackType type){
switch (type) {
case TrackAudio: {
//此处调整偏好的编码格式优先级
preferred_codec = {CodecAAC, CodecG711U, CodecG711A, CodecOpus};
GET_CONFIG_FUNC(vector<CodecId>, s_preferred_codec, RTC::kPreferredCodecA, toCodecArray);
CHECK(!s_preferred_codec.empty(), "rtc音频偏好codec不能为空");
preferred_codec = s_preferred_codec;
rtcp_fb = {SdpConst::kTWCCRtcpFb, SdpConst::kRembRtcpFb};
extmap = {
{RtpExtType::ssrc_audio_level, RtpDirection::sendrecv},
@ -1401,7 +1426,10 @@ void RtcConfigure::RtcTrackConfigure::setDefaultSetting(TrackType type){
}
case TrackVideo: {
//此处调整偏好的编码格式优先级
preferred_codec = {CodecH264, CodecH265, CodecAV1};
GET_CONFIG_FUNC(vector<CodecId>, s_preferred_codec, RTC::kPreferredCodecV, toCodecArray);
CHECK(!s_preferred_codec.empty(), "rtc视频偏好codec不能为空");
preferred_codec = s_preferred_codec;
rtcp_fb = {SdpConst::kTWCCRtcpFb, SdpConst::kRembRtcpFb, "nack", "ccm fir", "nack pli"};
extmap = {
{RtpExtType::abs_send_time, RtpDirection::sendrecv},