Replace MessageLoopProxy with SingleThreadTaskRunner for media/filters/ + associated code.

media/filters/decrypting_demuxer_stream.cc

 // 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.
 
 #include "media/filters/decrypting_demuxer_stream.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/location.h"
 #include "base/logging.h"
-#include "base/message_loop/message_loop_proxy.h"
+#include "base/single_thread_task_runner.h"
 #include "media/base/audio_decoder_config.h"
 #include "media/base/video_decoder_config.h"
 #include "media/base/bind_to_loop.h"
 #include "media/base/decoder_buffer.h"
 #include "media/base/decryptor.h"
 #include "media/base/demuxer_stream.h"
 #include "media/base/pipeline.h"
 
 namespace media {
 
 #define BIND_TO_LOOP(function) \
-    media::BindToLoop(message_loop_, base::Bind(function, weak_this_))
+    media::BindToLoop(task_runner_, base::Bind(function, weak_this_))
 
 static bool IsStreamValidAndEncrypted(DemuxerStream* stream) {
   return ((stream->type() == DemuxerStream::AUDIO &&
            stream->audio_decoder_config().IsValidConfig() &&
            stream->audio_decoder_config().is_encrypted()) ||
           (stream->type() == DemuxerStream::VIDEO &&
            stream->video_decoder_config().IsValidConfig() &&
            stream->video_decoder_config().is_encrypted()));
 }
 
 DecryptingDemuxerStream::DecryptingDemuxerStream(
-    const scoped_refptr<base::MessageLoopProxy>& message_loop,
+    const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
     const SetDecryptorReadyCB& set_decryptor_ready_cb)
-    : message_loop_(message_loop),
+    : task_runner_(task_runner),
       weak_factory_(this),
       state_(kUninitialized),
       demuxer_stream_(NULL),
       set_decryptor_ready_cb_(set_decryptor_ready_cb),
       decryptor_(NULL),
       key_added_while_decrypt_pending_(false) {
 }
 
 void DecryptingDemuxerStream::Initialize(DemuxerStream* stream,
                                          const PipelineStatusCB& status_cb) {
   DVLOG(2) << __FUNCTION__;
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK_EQ(state_, kUninitialized) << state_;
 
   DCHECK(!demuxer_stream_);
   weak_this_ = weak_factory_.GetWeakPtr();
   demuxer_stream_ = stream;
   init_cb_ = BindToCurrentLoop(status_cb);
 
   InitializeDecoderConfig();
 
   state_ = kDecryptorRequested;
   set_decryptor_ready_cb_.Run(
       BIND_TO_LOOP(&DecryptingDemuxerStream::SetDecryptor));
 }
 
 void DecryptingDemuxerStream::Read(const ReadCB& read_cb) {
   DVLOG(3) << __FUNCTION__;
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK_EQ(state_, kIdle) << state_;
   DCHECK(!read_cb.is_null());
   CHECK(read_cb_.is_null()) << "Overlapping reads are not supported.";
 
   read_cb_ = BindToCurrentLoop(read_cb);
   state_ = kPendingDemuxerRead;
   demuxer_stream_->Read(
       base::Bind(&DecryptingDemuxerStream::DecryptBuffer, weak_this_));
 }
 
 void DecryptingDemuxerStream::Reset(const base::Closure& closure) {
   DVLOG(2) << __FUNCTION__ << " - state: " << state_;
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK(state_ != kUninitialized) << state_;
   DCHECK(reset_cb_.is_null());
 
   reset_cb_ = BindToCurrentLoop(closure);
 
   if (state_ == kDecryptorRequested) {
     DCHECK(!init_cb_.is_null());
     set_decryptor_ready_cb_.Run(DecryptorReadyCB());
     base::ResetAndReturn(&init_cb_).Run(PIPELINE_ERROR_ABORT);
     DoReset();
@@ skipping 41 matching lines @@
 void DecryptingDemuxerStream::EnableBitstreamConverter() {
   demuxer_stream_->EnableBitstreamConverter();
 }
 
 DecryptingDemuxerStream::~DecryptingDemuxerStream() {
   DVLOG(2) << __FUNCTION__ << " : state_ = " << state_;
 }
 
 void DecryptingDemuxerStream::SetDecryptor(Decryptor* decryptor) {
   DVLOG(2) << __FUNCTION__;
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK_EQ(state_, kDecryptorRequested) << state_;
   DCHECK(!init_cb_.is_null());
   DCHECK(!set_decryptor_ready_cb_.is_null());
 
   set_decryptor_ready_cb_.Reset();
 
   if (!decryptor) {
     state_ = kUninitialized;
     base::ResetAndReturn(&init_cb_).Run(DECODER_ERROR_NOT_SUPPORTED);
     return;
   }
 
   decryptor_ = decryptor;
 
   decryptor_->RegisterNewKeyCB(
       GetDecryptorStreamType(),
       BIND_TO_LOOP(&DecryptingDemuxerStream::OnKeyAdded));
 
   state_ = kIdle;
   base::ResetAndReturn(&init_cb_).Run(PIPELINE_OK);
 }
 
 void DecryptingDemuxerStream::DecryptBuffer(
     DemuxerStream::Status status,
     const scoped_refptr<DecoderBuffer>& buffer) {
   DVLOG(3) << __FUNCTION__;
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK_EQ(state_, kPendingDemuxerRead) << state_;
   DCHECK(!read_cb_.is_null());
   DCHECK_EQ(buffer.get() != NULL, status == kOk) << status;
 
   // Even when |!reset_cb_.is_null()|, we need to pass |kConfigChanged| back to
   // the caller so that the downstream decoder can be properly reinitialized.
   if (status == kConfigChanged) {
     DVLOG(2) << "DoDecryptBuffer() - kConfigChanged.";
     DCHECK_EQ(demuxer_stream_->type() == AUDIO, audio_config_.IsValidConfig());
     DCHECK_EQ(demuxer_stream_->type() == VIDEO, video_config_.IsValidConfig());
@@ skipping 27 matching lines @@
     base::ResetAndReturn(&read_cb_).Run(status, buffer);
     return;
   }
 
   pending_buffer_to_decrypt_ = buffer;
   state_ = kPendingDecrypt;
   DecryptPendingBuffer();
 }
 
 void DecryptingDemuxerStream::DecryptPendingBuffer() {
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK_EQ(state_, kPendingDecrypt) << state_;
   decryptor_->Decrypt(
       GetDecryptorStreamType(),
       pending_buffer_to_decrypt_,
       BIND_TO_LOOP(&DecryptingDemuxerStream::DeliverBuffer));
 }
 
 void DecryptingDemuxerStream::DeliverBuffer(
     Decryptor::Status status,
     const scoped_refptr<DecoderBuffer>& decrypted_buffer) {
   DVLOG(3) << __FUNCTION__ << " - status: " << status;
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
   DCHECK_EQ(state_, kPendingDecrypt) << state_;
   DCHECK_NE(status, Decryptor::kNeedMoreData);
   DCHECK(!read_cb_.is_null());
   DCHECK(pending_buffer_to_decrypt_.get());
 
   bool need_to_try_again_if_nokey = key_added_while_decrypt_pending_;
   key_added_while_decrypt_pending_ = false;
 
   if (!reset_cb_.is_null()) {
     pending_buffer_to_decrypt_ = NULL;
@@ skipping 24 matching lines @@
     return;
   }
 
   DCHECK_EQ(status, Decryptor::kSuccess);
   pending_buffer_to_decrypt_ = NULL;
   state_ = kIdle;
   base::ResetAndReturn(&read_cb_).Run(kOk, decrypted_buffer);
 }
 
 void DecryptingDemuxerStream::OnKeyAdded() {
-  DCHECK(message_loop_->BelongsToCurrentThread());
+  DCHECK(task_runner_->BelongsToCurrentThread());
 
   if (state_ == kPendingDecrypt) {
     key_added_while_decrypt_pending_ = true;
     return;
   }
 
   if (state_ == kWaitingForKey) {
     state_ = kPendingDecrypt;
     DecryptPendingBuffer();
   }
@@ skipping 58 matching lines @@
       break;
     }
 
     default:
       NOTREACHED();
       return;
   }
 }
 
 }  // namespace media