Add info logging when packaging starts/finishes

Change-Id: I6adc2490e779242a34e3d2db11d349bd0c97eb9f

packager/media/base/demuxer.cc

@@ -51,6 +51,8 @@ Status Demuxer::Initialize() {
   DCHECK(!media_file_);
   DCHECK(!init_event_received_);
 
+  LOG(INFO) << "Initialize Demuxer for file '" << file_name_ << "'.";
+
   media_file_ = File::Open(file_name_.c_str(), "r");
   if (!media_file_) {
     return Status(error::FILE_FAILURE,
@@ -126,6 +128,8 @@ bool Demuxer::NewSampleEvent(uint32_t track_id,
 Status Demuxer::Run() {
   Status status;
 
+  LOG(INFO) << "Demuxer::Run() on file '" << file_name_ << "'.";
+
   // Start the streams.
   for (std::vector<MediaStream*>::iterator it = streams_.begin();
        it != streams_.end();

packager/media/formats/mp4/mp4_media_parser.cc

@@ -143,8 +143,7 @@ bool MP4MediaParser::ParseBox(bool* err) {
     // before the head of the 'moof', so keeping this box around is sufficient.)
     return !(*err);
   } else {
-    DLOG(WARNING) << "Skipping unrecognized top-level box: "
-                  << FourCCToString(reader->type());
+    VLOG(2) << "Skipping top-level box: " << FourCCToString(reader->type());
   }
 
   queue_.Pop(reader->size());

packager/media/formats/mp4/mp4_muxer.cc

@@ -123,6 +123,7 @@ Status MP4Muxer::Finalize() {
     return segmenter_finalized;
 
   FireOnMediaEndEvent();
+  LOG(INFO) << "MP4 file '" << options().output_file_name << "' finalized.";
   return Status::OK;
 }
 

packager/media/formats/mp4/single_segment_segmenter.cc

@@ -114,6 +114,9 @@ Status SingleSegmentSegmenter::DoFinalize() {
                   "Cannot open file to write " + options().output_file_name);
   }
 
+  LOG(INFO) << "Update media header (moov) and rewrite the file to '"
+            << options().output_file_name << "'.";
+
   // Write ftyp, moov and sidx to output file.
   scoped_ptr<BufferWriter> buffer(new BufferWriter());
   ftyp()->Write(buffer.get());