Fold DecryptingDemuxerStream::Stop() into the dtor.

media/filters/decoder_selector.cc

 // Copyright 2014 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.
 
 #include "decoder_selector.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/logging.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 98 matching lines @@
       base::Bind(&DecoderSelector<StreamType>::DecryptingDecoderInitDone,
                  weak_ptr_factory_.GetWeakPtr()),
       output_cb_);
 }
 
 template <DemuxerStream::Type StreamType>
 void DecoderSelector<StreamType>::Abort() {
   DVLOG(2) << __FUNCTION__;
   DCHECK(task_runner_->BelongsToCurrentThread());
 
-  // This could happen when SelectDecoder() was not called or when
-  // |select_decoder_cb_| was already posted but not fired (e.g. in the
-  // message loop queue).
-  if (select_decoder_cb_.is_null())
-    return;
-
-  // We must be trying to initialize the |decoder_| or the
-  // |decrypted_stream_|. Invalid all weak pointers so that all initialization
-  // callbacks won't fire.
+  // Invalidate all weak pointers so that pending callbacks won't fire.
   weak_ptr_factory_.InvalidateWeakPtrs();
 
-  if (decoder_) {
-    // |decrypted_stream_| is either NULL or already initialized. We don't
-    // need to Stop() |decrypted_stream_| in either case.
-    decoder_.reset();
+  decoder_.reset();
+  decrypted_stream_.reset();
+
+  if (!select_decoder_cb_.is_null())
     ReturnNullDecoder();
-    return;
-  }
-
-  if (decrypted_stream_) {
-    decrypted_stream_->Stop();
-    ReturnNullDecoder();
-    return;
-  }
-
-  NOTREACHED();
 }
 
 template <DemuxerStream::Type StreamType>
 void DecoderSelector<StreamType>::DecryptingDecoderInitDone(
     PipelineStatus status) {
   DVLOG(2) << __FUNCTION__;
   DCHECK(task_runner_->BelongsToCurrentThread());
 
   if (status == PIPELINE_OK) {
     base::ResetAndReturn(&select_decoder_cb_)
@@ skipping 77 matching lines @@
 
 // These forward declarations tell the compiler that we will use
 // DecoderSelector with these arguments, allowing us to keep these definitions
 // in our .cc without causing linker errors. This also means if anyone tries to
 // instantiate a DecoderSelector with anything but these two specializations
 // they'll most likely get linker errors.
 template class DecoderSelector<DemuxerStream::AUDIO>;
 template class DecoderSelector<DemuxerStream::VIDEO>;
 
 }  // namespace media