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