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      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_CONTENT_ENCODINGS_CLIENT_H_
      6 #define MEDIA_WEBM_WEBM_CONTENT_ENCODINGS_CLIENT_H_
      7 
      8 #include <vector>
      9 
     10 #include "base/callback.h"
     11 #include "base/compiler_specific.h"
     12 #include "base/memory/scoped_ptr.h"
     13 #include "media/base/media_export.h"
     14 #include "media/base/media_log.h"
     15 #include "media/webm/webm_content_encodings.h"
     16 #include "media/webm/webm_parser.h"
     17 
     18 namespace media {
     19 
     20 typedef std::vector<ContentEncoding*> ContentEncodings;
     21 
     22 // Parser for WebM ContentEncodings element.
     23 class MEDIA_EXPORT WebMContentEncodingsClient : public WebMParserClient {
     24  public:
     25   explicit WebMContentEncodingsClient(const LogCB& log_cb);
     26   virtual ~WebMContentEncodingsClient();
     27 
     28   const ContentEncodings& content_encodings() const;
     29 
     30   // WebMParserClient methods
     31   virtual WebMParserClient* OnListStart(int id) OVERRIDE;
     32   virtual bool OnListEnd(int id) OVERRIDE;
     33   virtual bool OnUInt(int id, int64 val) OVERRIDE;
     34   virtual bool OnBinary(int id, const uint8* data, int size) OVERRIDE;
     35 
     36  private:
     37   LogCB log_cb_;
     38   scoped_ptr<ContentEncoding> cur_content_encoding_;
     39   bool content_encryption_encountered_;
     40   ContentEncodings content_encodings_;
     41 
     42   // |content_encodings_| is ready. For debugging purpose.
     43   bool content_encodings_ready_;
     44 
     45   DISALLOW_COPY_AND_ASSIGN(WebMContentEncodingsClient);
     46 };
     47 
     48 }  // namespace media
     49 
     50 #endif  // MEDIA_WEBM_WEBM_CONTENT_ENCODINGS_CLIENT_H_
     51