修复rtmp增长时间戳相关bug

src/Rtmp/Rtmp.h

-/*
+/*
  * Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
  *
  * This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
@@ -130,8 +130,6 @@ public:
     uint8_t typeId;
     uint32_t bodySize = 0;
     uint32_t timeStamp = 0;
-    bool hasAbsStamp = false;
-    bool hasExtStamp = false;
     uint32_t deltaStamp = 0;
     uint32_t streamId;
     uint32_t chunkId;
@@ -153,8 +151,6 @@ public:
         typeId = that.typeId;
         bodySize = that.bodySize;
         timeStamp = that.timeStamp;
-        hasAbsStamp = that.hasAbsStamp;
-        hasExtStamp = that.hasExtStamp;
         deltaStamp = that.deltaStamp;
         streamId = that.streamId;
         chunkId = that.chunkId;

src/Rtmp/RtmpProtocol.cpp

@@ -514,7 +514,7 @@ void RtmpProtocol::handle_rtmp() {
     while (!_strRcvBuf.empty()) {
         uint8_t flags = _strRcvBuf[0];
         int iOffset = 0;
-        static const size_t HEADER_LENGTH[] = { 12, 8, 4, 1 };
+        static const size_t HEADER_LENGTH[] = {12, 8, 4, 1};
         size_t iHeaderLen = HEADER_LENGTH[flags >> 6];
         _iNowChunkID = flags & 0x3f;
         switch (_iNowChunkID) {
@@ -554,17 +554,15 @@ void RtmpProtocol::handle_rtmp() {
         chunkData.chunkId = _iNowChunkID;
         switch (iHeaderLen) {
             case 12:
-            chunkData.hasAbsStamp = true;
                 chunkData.streamId = load_le32(header.streamId);
             case 8:
                 chunkData.bodySize = load_be24(header.bodySize);
                 chunkData.typeId = header.typeId;
             case 4:
                 chunkData.deltaStamp = load_be24(header.timeStamp);
-            chunkData.hasExtStamp = chunkData.deltaStamp == 0xFFFFFF;
         }
 
-        if (chunkData.hasExtStamp) {
+        if (chunkData.deltaStamp == 0xFFFFFF) {
             if (_strRcvBuf.size() < iHeaderLen + iOffset + 4) {
                 //need more data
                 return;
@@ -583,21 +581,23 @@ void RtmpProtocol::handle_rtmp() {
             return;
         }
 
+        if (iHeaderLen == 12) {
+            //绝对时间戳
+            chunkData.timeStamp = chunkData.deltaStamp;
+        } else {
+            //时间戳增量
+            chunkData.timeStamp += chunkData.deltaStamp;
+        }
+
         chunkData.strBuf.append(_strRcvBuf, iHeaderLen + iOffset, iMore);
         _strRcvBuf.erase(0, iHeaderLen + iOffset + iMore);
-        
         if (chunkData.strBuf.size() == chunkData.bodySize) {
             //frame is ready
             _iNowStreamID = chunkData.streamId;
-            chunkData.timeStamp = chunkData.deltaStamp + (chunkData.hasAbsStamp ? 0 : chunkData.timeStamp);
-            
-            if(chunkData.bodySize){
+            if (chunkData.bodySize) {
                 handle_rtmpChunk(chunkData);
             }
             chunkData.strBuf.clear();
-            chunkData.hasAbsStamp = false;
-            chunkData.hasExtStamp = false;
-            chunkData.deltaStamp = 0;
         }
     }
 }