VideoToolbox encoder for cast senders.

media/cast/cast_sender_impl.cc

 // Copyright 2013 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/cast/cast_sender_impl.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 117 matching lines @@
            video_sender_->GetTargetPlayoutDelay());
   }
 }
 
 void CastSenderImpl::InitializeVideo(
     const VideoSenderConfig& video_config,
     const CastInitializationCallback& cast_initialization_cb,
     const CreateVideoEncodeAcceleratorCallback& create_vea_cb,
     const CreateVideoEncodeMemoryCallback& create_video_encode_mem_cb) {
   DCHECK(cast_environment_->CurrentlyOn(CastEnvironment::MAIN));
-  CHECK(video_config.use_external_encoder ||
-        cast_environment_->HasVideoThread());
 
   VLOG(1) << "CastSenderImpl@" << this << "::InitializeVideo()";
 
   video_sender_.reset(new VideoSender(
       cast_environment_,
       video_config,
       base::Bind(&CastSenderImpl::OnVideoInitialized,
                  weak_factory_.GetWeakPtr(), cast_initialization_cb),
       create_vea_cb,
       create_video_encode_mem_cb,
@@ skipping 37 matching lines @@
   if (result == STATUS_VIDEO_INITIALIZED) {
     video_frame_input_ =
         new LocalVideoFrameInput(cast_environment_, video_sender_->AsWeakPtr(),
                                  video_sender_->CreateVideoFrameFactory());
   }
   initialization_cb.Run(result);
 }
 
 }  // namespace cast
 }  // namespace media