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 12 matching lines @@
 class DecoderBuffer;
 
 // Decryptor-based DemuxerStream implementation that converts a potentially
 // encrypted demuxer stream to a clear demuxer stream.
 // All public APIs and callbacks are trampolined to the |task_runner_| so
 // that no locks are required for thread safety.
 class MEDIA_EXPORT DecryptingDemuxerStream : public DemuxerStream {
  public:
   DecryptingDemuxerStream(
       const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
-      const SetDecryptorReadyCB& set_decryptor_ready_cb);
+      const SetDecryptorReadyCB& set_decryptor_ready_cb,
+      const base::Closure& waiting_for_decryption_key_cb);
 
   // Cancels all pending operations immediately and fires all pending callbacks.
   ~DecryptingDemuxerStream() override;
 
   void Initialize(DemuxerStream* stream,
                   const PipelineStatusCB& status_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
@@ skipping 53 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_decryption_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_