MSE: Recognize "unknown duration" in ISOBMFF mvhd version 0, duration max uint32 case

media/formats/mp4/box_definitions.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/formats/mp4/box_definitions.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 268 matching lines @@
   if (type.type == FOURCC_CENC)
     RCHECK(reader->ReadChild(&info));
   // Other protection schemes are silently ignored. Since the protection scheme
   // type can't be determined until this box is opened, we return 'true' for
   // non-CENC protection scheme types. It is the parent box's responsibility to
   // ensure that this scheme type is a supported one.
   return true;
 }
 
 MovieHeader::MovieHeader()
-    : creation_time(0),
+    : version(0),
+      creation_time(0),
       modification_time(0),
       timescale(0),
       duration(0),
       rate(-1),
       volume(-1),
       next_track_id(0) {}
 MovieHeader::MovieHeader(const MovieHeader& other) = default;
 MovieHeader::~MovieHeader() {}
 FourCC MovieHeader::BoxType() const { return FOURCC_MVHD; }
 
 bool MovieHeader::Parse(BoxReader* reader) {
   RCHECK(reader->ReadFullBoxHeader());
+  version = reader->version();
 
-  if (reader->version() == 1) {
+  if (version == 1) {
     RCHECK(reader->Read8(&creation_time) &&
            reader->Read8(&modification_time) &&
            reader->Read4(&timescale) &&
            reader->Read8(&duration));
   } else {
     RCHECK(reader->Read4Into8(&creation_time) &&
            reader->Read4Into8(&modification_time) &&
            reader->Read4(&timescale) &&
            reader->Read4Into8(&duration));
   }
@@ skipping 961 matching lines @@
 SampleDependsOn IndependentAndDisposableSamples::sample_depends_on(
     size_t i) const {
   if (i >= sample_depends_on_.size())
     return kSampleDependsOnUnknown;
 
   return sample_depends_on_[i];
 }
 
 }  // namespace mp4
 }  // namespace media