添加安全冗余代码

src/Record/MP4Muxer.cpp

@@ -129,6 +129,10 @@ void MP4Muxer::addTrack(const Track::Ptr &track) {
                 WarnL << "不是AAC Track";
                 return;
             }
+            if(!aac_track->ready()){
+                WarnL << "AAC Track未就绪";
+                return;
+            }
             auto track_id = mov_writer_add_audio(_mov_writter.get(),
                                                  MOV_OBJECT_AAC,
                                                  aac_track->getAudioChannel(),
@@ -148,6 +152,10 @@ void MP4Muxer::addTrack(const Track::Ptr &track) {
                 WarnL << "不是H264 Track";
                 return;
             }
+            if(!h264_track->ready()){
+                WarnL << "H264 Track未就绪";
+                return;
+            }
 
             struct mpeg4_avc_t avc;
             string sps_pps = string("\x00\x00\x00\x01", 4) + h264_track->getSps() +
@@ -181,6 +189,10 @@ void MP4Muxer::addTrack(const Track::Ptr &track) {
                 WarnL << "不是H265 Track";
                 return;
             }
+            if(!h265_track->ready()){
+                WarnL << "H265 Track未就绪";
+                return;
+            }
 
             struct mpeg4_hevc_t hevc;
             string vps_sps_pps = string("\x00\x00\x00\x01", 4) + h265_track->getVps() +