for bug #199, refine the header generate

@@ -600,13 +600,15 @@ void SrsProtocol::generate_chunk_header(SrsMessageHeader* mh, bool c0, int* pnbh
     // generate the header.
     // generate the header.
     char* p = cache;
     char* p = cache;
     
     
+    // timestamp for c0/c3
+    u_int32_t timestamp = (u_int32_t)mh->timestamp;
+    
     if (c0) {
     if (c0) {
         // write new chunk stream header, fmt is 0
         // write new chunk stream header, fmt is 0
         *p++ = 0x00 | (mh->perfer_cid & 0x3F);
         *p++ = 0x00 | (mh->perfer_cid & 0x3F);
         
         
         // chunk message header, 11 bytes
         // chunk message header, 11 bytes
         // timestamp, 3bytes, big-endian
         // timestamp, 3bytes, big-endian
-        u_int32_t timestamp = (u_int32_t)mh->timestamp;
         if (timestamp < RTMP_EXTENDED_TIMESTAMP) {
         if (timestamp < RTMP_EXTENDED_TIMESTAMP) {
             pp = (char*)&timestamp;
             pp = (char*)&timestamp;
             *p++ = pp[2];
             *p++ = pp[2];
@@ -633,43 +635,37 @@ void SrsProtocol::generate_chunk_header(SrsMessageHeader* mh, bool c0, int* pnbh
         *p++ = pp[1];
         *p++ = pp[1];
         *p++ = pp[2];
         *p++ = pp[2];
         *p++ = pp[3];
         *p++ = pp[3];
-        
-        // chunk extended timestamp header, 0 or 4 bytes, big-endian
-        if(timestamp >= RTMP_EXTENDED_TIMESTAMP) {
-            pp = (char*)&timestamp;
-            *p++ = pp[3];
-            *p++ = pp[2];
-            *p++ = pp[1];
-            *p++ = pp[0];
-        }
     } else {
     } else {
         // write no message header chunk stream, fmt is 3
         // write no message header chunk stream, fmt is 3
         // @remark, if perfer_cid > 0x3F, that is, use 2B/3B chunk header,
         // @remark, if perfer_cid > 0x3F, that is, use 2B/3B chunk header,
         // SRS will rollback to 1B chunk header.
         // SRS will rollback to 1B chunk header.
         *p++ = 0xC0 | (mh->perfer_cid & 0x3F);
         *p++ = 0xC0 | (mh->perfer_cid & 0x3F);
-        
-        // chunk extended timestamp header, 0 or 4 bytes, big-endian
-        // 6.1.3. Extended Timestamp
-        // This field is transmitted only when the normal time stamp in the
-        // chunk message header is set to 0x00ffffff. If normal time stamp is
-        // set to any value less than 0x00ffffff, this field MUST NOT be
-        // present. This field MUST NOT be present if the timestamp field is not
-        // present. Type 3 chunks MUST NOT have this field.
-        // adobe changed for Type3 chunk:
-        //        FMLE always sendout the extended-timestamp,
-        //        must send the extended-timestamp to FMS,
-        //        must send the extended-timestamp to flash-player.
-        // @see: ngx_rtmp_prepare_message
-        // @see: http://blog.csdn.net/win_lin/article/details/13363699
-        // TODO: FIXME: extract to outer.
-        u_int32_t timestamp = (u_int32_t)mh->timestamp;
-        if (timestamp >= RTMP_EXTENDED_TIMESTAMP) {
-            pp = (char*)&timestamp;
-            *p++ = pp[3];
-            *p++ = pp[2];
-            *p++ = pp[1];
-            *p++ = pp[0];
-        }
+    }
+    
+    // for c0
+    // chunk extended timestamp header, 0 or 4 bytes, big-endian
+    // 
+    // for c3:
+    // chunk extended timestamp header, 0 or 4 bytes, big-endian
+    // 6.1.3. Extended Timestamp
+    // This field is transmitted only when the normal time stamp in the
+    // chunk message header is set to 0x00ffffff. If normal time stamp is
+    // set to any value less than 0x00ffffff, this field MUST NOT be
+    // present. This field MUST NOT be present if the timestamp field is not
+    // present. Type 3 chunks MUST NOT have this field.
+    // adobe changed for Type3 chunk:
+    //        FMLE always sendout the extended-timestamp,
+    //        must send the extended-timestamp to FMS,
+    //        must send the extended-timestamp to flash-player.
+    // @see: ngx_rtmp_prepare_message
+    // @see: http://blog.csdn.net/win_lin/article/details/13363699
+    // TODO: FIXME: extract to outer.
+    if (timestamp >= RTMP_EXTENDED_TIMESTAMP) {
+        pp = (char*)&timestamp;
+        *p++ = pp[3];
+        *p++ = pp[2];
+        *p++ = pp[1];
+        *p++ = pp[0];
     }
     }
     
     
     // always has header
     // always has header