新增帧合并开关，优化国标流秒开速度

conf/config.ini

@@ -342,6 +342,8 @@ rtp_g711_dur_ms = 100
 #udp接收数据socket buffer大小配置
 #4*1024*1024=4196304
 udp_recv_socket_buffer=4194304
+#ps/ts解析后是否等待下一帧以判断本帧是否完整，开启后提高兼容性，但是可能增加延时
+merge_frame=1
 
 [rtc]
 #rtc播放推流、播放超时时间

src/Common/config.cpp

@@ -366,6 +366,7 @@ const string kOpusPT = RTP_PROXY_FIELD "opus_pt";
 const string kGopCache = RTP_PROXY_FIELD "gop_cache";
 const string kRtpG711DurMs = RTP_PROXY_FIELD "rtp_g711_dur_ms";
 const string kUdpRecvSocketBuffer = RTP_PROXY_FIELD "udp_recv_socket_buffer";
+const std::string kMergeFrame = RTP_PROXY_FIELD "merge_frame";
 
 static onceToken token([]() {
     mINI::Instance()[kDumpDir] = "";
@@ -378,6 +379,7 @@ static onceToken token([]() {
     mINI::Instance()[kGopCache] = 1;
     mINI::Instance()[kRtpG711DurMs] = 100;
     mINI::Instance()[kUdpRecvSocketBuffer] = 4 * 1024 * 1024;
+    mINI::Instance()[kMergeFrame] = 1;
 });
 } // namespace RtpProxy
 

src/Common/config.h

@@ -563,6 +563,8 @@ extern const std::string kGopCache;
 extern const std::string kRtpG711DurMs;
 // udp recv socket buffer size
 extern const std::string kUdpRecvSocketBuffer;
+// ps/ts解析后是否等待下一帧以判断本帧是否完整，开启后提高兼容性，但是可能增加延时
+extern const std::string kMergeFrame;
 } // namespace RtpProxy
 
 /**

src/Rtp/Decoder.cpp

@@ -11,6 +11,7 @@
 #include "Decoder.h"
 #include "PSDecoder.h"
 #include "TSDecoder.h"
+#include "Common/config.h"
 #include "Extension/Factory.h"
 
 #if defined(ENABLE_RTPPROXY) || defined(ENABLE_HLS)
@@ -122,11 +123,18 @@ void DecoderImp::onDecode(int stream, int codecid, int flags, int64_t pts, int64
         WarnL << "Unsupported codec :" << getCodecName(codec);
         return;
     }
+    GET_CONFIG(bool, merge_frame, RtpProxy::kMergeFrame)
     auto frame = Factory::getFrameFromPtr(codec, (char *)data, bytes, dts, pts);
-    if (getTrackType(codec) != TrackVideo) {
+    if (getTrackType(codec) != TrackVideo || !merge_frame) {
         onFrame(stream, frame);
+        if (_last_is_keyframe && _video_merge) {
+            // 上次是关键帧，收到音频后，说明帧收齐了
+            _video_merge->flush();
+        }
         return;
     }
+    _last_is_keyframe = frame->keyFrame() || frame->configFrame();
+    _video_merge = &ref.second;
     ref.second.inputFrame(frame, [this, stream, codec](uint64_t dts, uint64_t pts, const Buffer::Ptr &buffer, bool) {
         onFrame(stream, Factory::getFrameFromBuffer(codec, buffer, dts, pts));
     });

src/Rtp/Decoder.h

@@ -59,13 +59,14 @@ private:
 private:
     bool _finished = false;
     bool _have_video = false;
+    bool _last_is_keyframe = false;
     Decoder::Ptr _decoder;
     MediaSinkInterface *_sink;
-
     class FrameMergerImp : public FrameMerger {
     public:
         FrameMergerImp() : FrameMerger(FrameMerger::none) {}
     };
+    FrameMergerImp *_video_merge = nullptr;
     std::unordered_map<int, std::pair<Track::Ptr, FrameMergerImp> > _tracks;
 };