1 // Copyright (c) 2016 The WebM project authors. All Rights Reserved.
2 //
3 // Use of this source code is governed by a BSD-style license
4 // that can be found in the LICENSE file in the root of the source
5 // tree. An additional intellectual property rights grant can be found
6 // in the file PATENTS.  All contributing project authors may
7 // be found in the AUTHORS file in the root of the source tree.
8 #ifndef SRC_EBML_PARSER_H_
9 #define SRC_EBML_PARSER_H_
10 
11 #include "src/byte_parser.h"
12 #include "src/int_parser.h"
13 #include "src/master_value_parser.h"
14 #include "webm/dom_types.h"
15 #include "webm/id.h"
16 
17 namespace webm {
18 
19 // Spec references:
20 // http://matroska.org/technical/specs/index.html#EBML
21 // https://github.com/Matroska-Org/ebml-specification/blob/master/specification.markdown#ebml-header-elements
22 // http://www.webmproject.org/docs/container/#EBML
23 class EbmlParser : public MasterValueParser<Ebml> {
24  public:
EbmlParser()25   EbmlParser()
26       : MasterValueParser<Ebml>(
27             MakeChild<UnsignedIntParser>(Id::kEbmlVersion, &Ebml::ebml_version),
28             MakeChild<UnsignedIntParser>(Id::kEbmlReadVersion,
29                                          &Ebml::ebml_read_version),
30             MakeChild<UnsignedIntParser>(Id::kEbmlMaxIdLength,
31                                          &Ebml::ebml_max_id_length),
32             MakeChild<UnsignedIntParser>(Id::kEbmlMaxSizeLength,
33                                          &Ebml::ebml_max_size_length),
34             MakeChild<StringParser>(Id::kDocType, &Ebml::doc_type),
35             MakeChild<UnsignedIntParser>(Id::kDocTypeVersion,
36                                          &Ebml::doc_type_version),
37             MakeChild<UnsignedIntParser>(Id::kDocTypeReadVersion,
38                                          &Ebml::doc_type_read_version)) {}
39 
40  protected:
OnParseCompleted(Callback * callback)41   Status OnParseCompleted(Callback* callback) override {
42     return callback->OnEbml(metadata(Id::kEbml), value());
43   }
44 };
45 
46 }  // namespace webm
47 
48 #endif  // SRC_EBML_PARSER_H_
49