project: replaced proxy with pre-cache

Removed proxy task and replaced with a true honest-to-god pre-cache for
footage. This footage is pre-cached to a sequence and therefore 100% ready
for use in it once the task is done.

app/task/cache/CMakeLists.txt

@@ -18,5 +18,7 @@ set(OLIVE_SOURCES
   ${OLIVE_SOURCES}
   task/cache/cache.h
   task/cache/cache.cpp
+  task/cache/footagecache.h
+  task/cache/footagecache.cpp
   PARENT_SCOPE
 )

app/task/cache/cache.h

@@ -36,10 +36,9 @@ public:
             const AudioParams &aparams,
             bool in_out_only);
 
-public slots:
+protected:
   virtual bool Run() override;
 
-protected:
   virtual QFuture<void> DownloadFrame(FramePtr frame, const QByteArray &hash) override;
 
   virtual void FrameDownloaded(const QByteArray& hash, const std::list<rational>& times) override;

app/task/cache/footagecache.cpp

@@ -0,0 +1,53 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#include "footagecache.h"
+
+#include "common/timecodefunctions.h"
+
+OLIVE_NAMESPACE_ENTER
+
+FootageCacheTask::FootageCacheTask(VideoStreamPtr footage, Sequence *sequence) :
+  CacheTask(new ViewerOutput(), sequence->video_params(), sequence->audio_params(), false),
+  footage_(footage)
+{
+  viewer()->set_video_params(sequence->video_params());
+  viewer()->set_audio_params(sequence->audio_params());
+  backend()->SetVideoParams(sequence->video_params());
+  backend()->SetAudioParams(sequence->audio_params());
+
+  video_node_ = new VideoInput();
+  video_node_->SetFootage(footage);
+
+  NodeParam::ConnectEdge(video_node_->output(), viewer()->texture_input());
+
+  SetTitle(tr("Pre-caching %1:%2").arg(footage->footage()->filename(),
+                                       QString::number(footage->index())));
+
+  backend()->ProcessUpdateQueue();
+}
+
+FootageCacheTask::~FootageCacheTask()
+{
+  delete viewer();
+  delete video_node_;
+}
+
+OLIVE_NAMESPACE_EXIT

app/task/cache/footagecache.h

@@ -0,0 +1,48 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#ifndef FOOTAGECACHETASK_H
+#define FOOTAGECACHETASK_H
+
+#include "cache.h"
+#include "node/input/media/video/video.h"
+#include "project/item/footage/footage.h"
+#include "project/item/sequence/sequence.h"
+
+OLIVE_NAMESPACE_ENTER
+
+class FootageCacheTask : public CacheTask
+{
+  Q_OBJECT
+public:
+  FootageCacheTask(VideoStreamPtr footage, Sequence* sequence);
+
+  virtual ~FootageCacheTask() override;
+
+private:
+  VideoStreamPtr footage_;
+
+  VideoInput* video_node_;
+
+};
+
+OLIVE_NAMESPACE_EXIT
+
+#endif // FOOTAGECACHETASK_H