media/filters/chunk_demuxer_client.h

   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_FILTERS_CHUNK_DEMUXER_CLIENT_H_
   6 #define MEDIA_FILTERS_CHUNK_DEMUXER_CLIENT_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9
  10 namespace media {
  11
  12 class ChunkDemuxer;
  13
  14 // Interface used to notify an external object when a ChunkDemuxer
  15 // is opened & closed.
  16 class ChunkDemuxerClient {
  17  public:
  18   // Called when a ChunkDemuxer object is opened.
  19   virtual void DemuxerOpened(ChunkDemuxer* demuxer) = 0;
  20
  21   // The ChunkDemuxer passed via last DemuxerOpened() call is now
  22   // closed. Any further calls on the demuxer will result in an error.
  23   virtual void DemuxerClosed() = 0;
  24
  25   // A decryption key associated with |init_data| may be needed to decrypt the
  26   // media being demuxed before decoding. Note that the demuxing itself does not
  27   // need decryption.
  28   virtual void KeyNeeded(scoped_array<uint8> init_data, int init_data_size) = 0;
  29 };
  30
  31 }  // namespace media
  32
  33 #endif  // MEDIA_FILTERS_CHUNK_DEMUXER_CLIENT_H_