Encrypted Media: Support config change in DecryptingDemuxerStream.

media/filters/decrypting_demuxer_stream.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_FILTERS_DECRYPTING_DEMUXER_STREAM_H_
 #define MEDIA_FILTERS_DECRYPTING_DEMUXER_STREAM_H_
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "media/base/decryptor.h"
@@ skipping 73 matching lines @@
   // Callback for the |decryptor_| to notify this object that a new key has been
   // added.
   void OnKeyAdded();
 
   // Resets decoder and calls |reset_cb_|.
   void DoReset();
 
   // Returns Decryptor::StreamType converted from |stream_type_|.
   Decryptor::StreamType GetDecryptorStreamType() const;
 
+  // Sets |{audio|video}_config_| from |stream|.
+  void SetDecoderConfig(const scoped_refptr<DemuxerStream>& stream);
+
   scoped_refptr<base::MessageLoopProxy> message_loop_;
 
   State state_;
 
   PipelineStatusCB init_cb_;
   ReadCB read_cb_;
   base::Closure reset_cb_;
 
   // Pointer to the input demuxer stream that will feed us encrypted buffers.
   scoped_refptr<DemuxerStream> demuxer_stream_;
@@ skipping 15 matching lines @@
   // If this variable is true and kNoKey is returned then we need to try
   // decrypting again in case the newly added key is the correct decryption key.
   bool key_added_while_decrypt_pending_;
 
   DISALLOW_COPY_AND_ASSIGN(DecryptingDemuxerStream);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_DECRYPTING_DEMUXER_STREAM_H_