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common/rfb/EncCache.h

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+/* Copyright (C) 2000-2003 Constantin Kaplinsky.  All Rights Reserved.
+ * Copyright (C) 2011 D. R. Commander.  All Rights Reserved.
+ * Copyright 2014-2018 Pierre Ossman for Cendio AB
+ * Copyright (C) 2019 Lauri Kasanen
+ *
+ * This 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This software 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 software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+#ifndef __RFB_ENCCACHE_H__
+#define __RFB_ENCCACHE_H__
+
+#include <map>
+
+#include <rdr/types.h>
+
+#include <stdint.h>
+#include <stdlib.h>
+
+namespace rfb {
+
+  struct EncId {
+    uint8_t type;
+    uint16_t x, y, w, h;
+    uint32_t len;
+
+    bool operator <(const EncId &other) const {
+      return type < other.type ||
+             x < other.x ||
+             y < other.y ||
+             w < other.w ||
+             h < other.h;
+    }
+  };
+
+  class EncCache {
+  public:
+    EncCache();
+    ~EncCache();
+
+    void clear();
+    void add(uint8_t type, uint16_t x, uint16_t y, uint16_t w, uint16_t h,
+             uint32_t len, const void *data);
+    const void *get(uint8_t type, uint16_t x, uint16_t y, uint16_t w, uint16_t h,
+                    uint32_t &len) const;
+
+    bool enabled;
+
+  protected:
+    std::map<EncId, const void *> cache;
+  };
+}
+
+#endif