began draft of internal node rendering structure

2019-07-10 23:06:09 -04:00
parent f38e6b876d
commit d76691a9ef
38 changed files with 1617 additions and 14 deletions
@@ -0,0 +1,111 @@
+/***
+
+  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 MEMORYCACHE_H
+#define MEMORYCACHE_H
+
+#include <QList>
+#include <QMutex>
+
+#include "texturebuffer.h"
+#include "memorybuffer.h"
+
+class ImageCache : public QObject
+{
+public:
+
+  enum BufferType {
+    kInvalidBuf,  // No buffer
+    kMemBuf,      // RAM (CPU) buffer
+    kTexBuf       // VRAM (GPU) buffer
+  };
+
+  class Ref {
+  public:
+    Ref(ImageCache* cache);
+    ~Ref();
+
+    void Relinquish();
+  protected:
+    void* BufferInternal();
+
+    BufferType buffer_type_;
+
+    int width_;
+    int height_;
+  private:
+    void Request();
+
+    ImageCache* cache_;
+    int buffer_;
+  };
+
+  class ImgRef : public Ref {
+  public:
+    ImgRef(ImageCache* cache);
+
+    void SetSize(int w, int h);
+
+    MemoryBuffer* buffer();
+
+  };
+
+  class TexRef : public Ref {
+  public:
+    TexRef(ImageCache* cache);
+    TextureBuffer* buffer();
+  };
+
+  ImageCache();
+  ~ImageCache();
+
+  void SetParameters(QOpenGLContext* ctx, int width, int height);
+
+private:
+  int RequestBuffer(Ref *r, const BufferType& type, const olive::PixelFormat &format, int width, int height);
+  int RequestBufferInternal(Ref *r, const BufferType& type, const olive::PixelFormat &format, int width, int height);
+
+  void RelinquishBuffer(int index, const BufferType& type);
+
+  void *Buffer(int index, const BufferType &type);
+
+  bool OutOfMemory();
+
+  void Clear();
+
+  QList<MemoryBuffer> img_buffers_;
+  QList<Ref*> img_refs_;
+  QList<time_t> img_access_times_;
+  QList<int> img_relinquished_;
+
+  QList<TextureBuffer> tex_buffers_;
+  QList<Ref*> tex_refs_;
+  QList<time_t> tex_access_times_;
+  QList<int> tex_relinquished_;
+
+  QOpenGLContext* ctx_;
+
+  int width_;
+  int height_;
+
+  QMutex buffer_array_mutex_;
+};
+
+#endif // MEMORYCACHE_H