renderer: massive overhaul to move to a vastly simplified threading system

2020-05-15 00:52:45 +10:00
parent ef6aa18fe1
commit 8795e51452
20 changed files with 1022 additions and 530 deletions
@@ -0,0 +1,166 @@
+/***
+
+  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 RENDERWORKER_H
+#define RENDERWORKER_H
+
+#include <QMatrix4x4>
+
+#include "decodercache.h"
+#include "node/traverser.h"
+#include "node/output/viewer/viewer.h"
+#include "render/backend/rendercache.h"
+
+OLIVE_NAMESPACE_ENTER
+
+class RenderWorker : public QObject, public NodeTraverser
+{
+  Q_OBJECT
+public:
+  RenderWorker();
+
+  virtual ~RenderWorker() override;
+
+  void Init(ViewerOutput *viewer);
+  void Close();
+
+  void Queue(NodeInput* input);
+  void ProcessQueue();
+
+  bool IsAvailable() const
+  {
+    return available_;
+  }
+
+  void SetAvailable(bool a)
+  {
+    available_ = a;
+  }
+
+  ViewerOutput* GetViewer() const
+  {
+    return viewer_;
+  }
+
+  void SetVideoParams(const VideoRenderingParams& params)
+  {
+    video_params_ = params;
+  }
+
+  void SetAudioParams(const AudioRenderingParams& params)
+  {
+    audio_params_ = params;
+  }
+
+  void SetVideoDownloadMatrix(const QMatrix4x4& mat)
+  {
+    video_download_matrix_ = mat;
+  }
+
+  /**
+   * @brief Return a unique ID for the image generated at this time
+   *
+   * This hash should always be unique to this image and can therefore be used to match existing
+   * cached frames.
+   *
+   * @return
+   *
+   * SHA-1 hash or empty QByteArray if no viewer node is set.
+   */
+  QByteArray Hash(const rational &time) const;
+
+  /**
+   * @brief Render the frame at this time
+   *
+   * Produces a fully rendered frame from the connected viewer at this time.
+   *
+   * @return
+   *
+   * A frame corresponding to the set video parameters. If no nodes are active at the time, this
+   * function will still return a blank frame with the same parameters. If no viewer node is set,
+   * nullptr is returned.
+   */
+  FramePtr RenderFrame(const rational& time);
+
+  SampleBufferPtr RenderAudio(ViewerOutput* viewer,
+                              const TimeRange& range,
+                              const SampleFormat::Format& sample_fmt);
+
+protected:
+  virtual void TextureToFrame(const QVariant& texture, FramePtr frame, const QMatrix4x4 &mat) const = 0;
+
+  virtual NodeValue FrameToTexture(DecoderPtr decoder, StreamPtr stream, const TimeRange &range) const = 0;
+
+  virtual void FootageProcessingEvent(StreamPtr stream, const TimeRange &input_time, NodeValueTable* table) override;
+
+  virtual NodeValueTable GenerateBlockTable(const TrackOutput *track, const TimeRange &range) override;
+
+  virtual void ProcessNodeEvent(const Node *node, const TimeRange &range, NodeValueDatabase &input_params_in, NodeValueTable &output_params) override;
+
+  const VideoRenderingParams& video_params() const
+  {
+    return video_params_;
+  }
+
+  const AudioRenderingParams& audio_params() const
+  {
+    return audio_params_;
+  }
+
+signals:
+  void AudioConformUnavailable();
+
+private:
+  NodeValue GetDataFromStream(StreamPtr stream, const TimeRange& input_time);
+
+  DecoderPtr ResolveDecoderFromInput(StreamPtr stream);
+
+  void CopyNodeInputValue(NodeInput* input);
+  Node *CopyNodeConnections(Node *src_node);
+  void CopyNodeMakeConnection(NodeInput *src_input, NodeInput *dst_input);
+
+  VideoRenderingParams video_params_;
+
+  AudioRenderingParams audio_params_;
+
+  struct CachedStill {
+    NodeValue texture;
+    QString colorspace;
+    bool alpha_is_associated;
+    int divider;
+    rational time;
+  };
+
+  RenderCache<Stream*, CachedStill> still_image_cache_;
+
+  QMatrix4x4 video_download_matrix_;
+
+  DecoderCache decoder_cache_;
+
+  ViewerOutput* viewer_;
+  QList<NodeInput*> queued_updates_;
+  QHash<Node*, Node*> copy_map_;
+  bool available_;
+
+};
+
+OLIVE_NAMESPACE_EXIT
+
+#endif // RENDERWORKER_H