media/formats/webm/webm_content_encodings_client.h

   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_CONTENT_ENCODINGS_CLIENT_H_
   6 #define MEDIA_FORMATS_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/formats/webm/webm_content_encodings.h"
  16 #include "media/formats/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 scoped_refptr<MediaLog>& media_log);
  26   ~WebMContentEncodingsClient() override;
  27
  28   const ContentEncodings& content_encodings() const;
  29
  30   // WebMParserClient methods
  31   WebMParserClient* OnListStart(int id) override;
  32   bool OnListEnd(int id) override;
  33   bool OnUInt(int id, int64 val) override;
  34   bool OnBinary(int id, const uint8* data, int size) override;
  35
  36  private:
  37   scoped_refptr<MediaLog> media_log_;
  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_FORMATS_WEBM_WEBM_CONTENT_ENCODINGS_CLIENT_H_