Decryptors can report kNoKey to WebMediaPlayer

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 "base/memory/weak_ptr.h"
@@ skipping 18 matching lines @@
 class MEDIA_EXPORT DecryptingDemuxerStream : public DemuxerStream {
  public:
   DecryptingDemuxerStream(
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
       const SetDecryptorReadyCB& set_decryptor_ready_cb);
 
   // Cancels all pending operations immediately and fires all pending callbacks.
   ~DecryptingDemuxerStream() override;
 
   void Initialize(DemuxerStream* stream,
-                  const PipelineStatusCB& status_cb);
+                  const PipelineStatusCB& status_cb,
+                  const base::Closure& waiting_for_encryption_key_cb);
 
   // Cancels all pending operations and fires all pending callbacks. If in
   // kPendingDemuxerRead or kPendingDecrypt state, waits for the pending
   // operation to finish before satisfying |closure|. Sets the state to
   // kUninitialized if |this| hasn't been initialized, or to kIdle otherwise.
   void Reset(const base::Closure& closure);
 
   // DemuxerStream implementation.
   void Read(const ReadCB& read_cb) override;
   AudioDecoderConfig audio_decoder_config() override;
@@ skipping 47 matching lines @@
   // |demuxer_stream_|.
   void InitializeDecoderConfig();
 
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
   State state_;
 
   PipelineStatusCB init_cb_;
   ReadCB read_cb_;
   base::Closure reset_cb_;
+  base::Closure waiting_for_encryption_key_cb_;
 
   // Pointer to the input demuxer stream that will feed us encrypted buffers.
   DemuxerStream* demuxer_stream_;
 
   AudioDecoderConfig audio_config_;
   VideoDecoderConfig video_config_;
 
   // Callback to request/cancel decryptor creation notification.
   SetDecryptorReadyCB set_decryptor_ready_cb_;
 
@@ skipping 10 matching lines @@
 
   base::WeakPtr<DecryptingDemuxerStream> weak_this_;
   base::WeakPtrFactory<DecryptingDemuxerStream> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DecryptingDemuxerStream);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_DECRYPTING_DEMUXER_STREAM_H_