1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef MEDIA_FORMATS_WEBM_WEBM_INFO_PARSER_H_
6#define MEDIA_FORMATS_WEBM_WEBM_INFO_PARSER_H_
7
8#include "base/compiler_specific.h"
9#include "base/time/time.h"
10#include "media/base/media_export.h"
11#include "media/formats/webm/webm_parser.h"
12
13namespace media {
14
15// Parser for WebM Info element.
16class MEDIA_EXPORT WebMInfoParser : public WebMParserClient {
17 public:
18  WebMInfoParser();
19  virtual ~WebMInfoParser();
20
21  // Parses a WebM Info element in |buf|.
22  //
23  // Returns -1 if the parse fails.
24  // Returns 0 if more data is needed.
25  // Returns the number of bytes parsed on success.
26  int Parse(const uint8* buf, int size);
27
28  int64 timecode_scale() const { return timecode_scale_; }
29  double duration() const { return duration_; }
30  base::Time date_utc() const { return date_utc_; }
31
32 private:
33  // WebMParserClient methods
34  virtual WebMParserClient* OnListStart(int id) OVERRIDE;
35  virtual bool OnListEnd(int id) OVERRIDE;
36  virtual bool OnUInt(int id, int64 val) OVERRIDE;
37  virtual bool OnFloat(int id, double val) OVERRIDE;
38  virtual bool OnBinary(int id, const uint8* data, int size) OVERRIDE;
39  virtual bool OnString(int id, const std::string& str) OVERRIDE;
40
41  int64 timecode_scale_;
42  double duration_;
43  base::Time date_utc_;
44
45  DISALLOW_COPY_AND_ASSIGN(WebMInfoParser);
46};
47
48}  // namespace media
49
50#endif  // MEDIA_FORMATS_WEBM_WEBM_INFO_PARSER_H_
51