1 // Copyright (c) 2012 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_WEBM_WEBM_INFO_PARSER_H_ 6 #define MEDIA_WEBM_WEBM_INFO_PARSER_H_ 7 8 #include "base/compiler_specific.h" 9 #include "media/base/media_export.h" 10 #include "media/webm/webm_parser.h" 11 12 namespace media { 13 14 // Parser for WebM Info element. 15 class MEDIA_EXPORT WebMInfoParser : public WebMParserClient { 16 public: 17 WebMInfoParser(); 18 virtual ~WebMInfoParser(); 19 20 // Parses a WebM Info element in |buf|. 21 // 22 // Returns -1 if the parse fails. 23 // Returns 0 if more data is needed. 24 // Returns the number of bytes parsed on success. 25 int Parse(const uint8* buf, int size); 26 27 int64 timecode_scale() const { return timecode_scale_; } 28 double duration() const { return duration_; } 29 30 private: 31 // WebMParserClient methods 32 virtual WebMParserClient* OnListStart(int id) OVERRIDE; 33 virtual bool OnListEnd(int id) OVERRIDE; 34 virtual bool OnUInt(int id, int64 val) OVERRIDE; 35 virtual bool OnFloat(int id, double val) OVERRIDE; 36 virtual bool OnBinary(int id, const uint8* data, int size) OVERRIDE; 37 virtual bool OnString(int id, const std::string& str) OVERRIDE; 38 39 int64 timecode_scale_; 40 double duration_; 41 42 DISALLOW_COPY_AND_ASSIGN(WebMInfoParser); 43 }; 44 45 } // namespace media 46 47 #endif // MEDIA_WEBM_WEBM_INFO_PARSER_H_ 48
