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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
- *
- * 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_ENCODEMANAGER_H__
- #define __RFB_ENCODEMANAGER_H__
-
- #include <vector>
-
- #include <rdr/types.h>
- #include <rfb/PixelBuffer.h>
- #include <rfb/Region.h>
- #include <rfb/Timer.h>
-
- namespace rfb {
- class SConnection;
- class Encoder;
- class UpdateInfo;
- class PixelBuffer;
- class RenderedCursor;
- struct Rect;
-
- struct RectInfo;
-
- class EncodeManager : public Timer::Callback {
- public:
- EncodeManager(SConnection* conn);
- ~EncodeManager();
-
- void logStats();
-
- // Hack to let ConnParams calculate the client's preferred encoding
- static bool supported(int encoding);
-
- bool needsLosslessRefresh(const Region& req);
- int getNextLosslessRefresh(const Region& req);
-
- void pruneLosslessRefresh(const Region& limits);
-
- void writeUpdate(const UpdateInfo& ui, const PixelBuffer* pb,
- const RenderedCursor* renderedCursor);
-
- void writeLosslessRefresh(const Region& req, const PixelBuffer* pb,
- const RenderedCursor* renderedCursor,
- size_t maxUpdateSize);
-
- protected:
- virtual bool handleTimeout(Timer* t);
-
- void doUpdate(bool allowLossy, const Region& changed,
- const Region& copied, const Point& copy_delta,
- const PixelBuffer* pb,
- const RenderedCursor* renderedCursor);
- void prepareEncoders(bool allowLossy);
-
- Region getLosslessRefresh(const Region& req, size_t maxUpdateSize);
-
- int computeNumRects(const Region& changed);
-
- Encoder *startRect(const Rect& rect, int type);
- void endRect();
-
- void writeCopyRects(const Region& copied, const Point& delta);
- void writeSolidRects(Region *changed, const PixelBuffer* pb);
- void findSolidRect(const Rect& rect, Region *changed, const PixelBuffer* pb);
- void writeRects(const Region& changed, const PixelBuffer* pb);
-
- void writeSubRect(const Rect& rect, const PixelBuffer *pb);
-
- bool checkSolidTile(const Rect& r, const rdr::U8* colourValue,
- const PixelBuffer *pb);
- void extendSolidAreaByBlock(const Rect& r, const rdr::U8* colourValue,
- const PixelBuffer *pb, Rect* er);
- void extendSolidAreaByPixel(const Rect& r, const Rect& sr,
- const rdr::U8* colourValue,
- const PixelBuffer *pb, Rect* er);
-
- PixelBuffer* preparePixelBuffer(const Rect& rect,
- const PixelBuffer *pb, bool convert);
-
- bool analyseRect(const PixelBuffer *pb,
- struct RectInfo *info, int maxColours);
-
- protected:
- // Preprocessor generated, optimised methods
- inline bool checkSolidTile(const Rect& r, rdr::U8 colourValue,
- const PixelBuffer *pb);
- inline bool checkSolidTile(const Rect& r, rdr::U16 colourValue,
- const PixelBuffer *pb);
- inline bool checkSolidTile(const Rect& r, rdr::U32 colourValue,
- const PixelBuffer *pb);
-
- inline bool analyseRect(int width, int height,
- const rdr::U8* buffer, int stride,
- struct RectInfo *info, int maxColours);
- inline bool analyseRect(int width, int height,
- const rdr::U16* buffer, int stride,
- struct RectInfo *info, int maxColours);
- inline bool analyseRect(int width, int height,
- const rdr::U32* buffer, int stride,
- struct RectInfo *info, int maxColours);
-
- protected:
- SConnection *conn;
-
- std::vector<Encoder*> encoders;
- std::vector<int> activeEncoders;
-
- Region lossyRegion;
- Region recentlyChangedRegion;
- Region pendingRefreshRegion;
-
- Timer recentChangeTimer;
-
- struct EncoderStats {
- unsigned rects;
- unsigned long long bytes;
- unsigned long long pixels;
- unsigned long long equivalent;
- };
- typedef std::vector< std::vector<struct EncoderStats> > StatsVector;
-
- unsigned updates;
- EncoderStats copyStats;
- StatsVector stats;
- int activeType;
- int beforeLength;
-
- class OffsetPixelBuffer : public FullFramePixelBuffer {
- public:
- OffsetPixelBuffer() {}
- virtual ~OffsetPixelBuffer() {}
-
- void update(const PixelFormat& pf, int width, int height,
- const rdr::U8* data_, int stride);
-
- private:
- virtual rdr::U8* getBufferRW(const Rect& r, int* stride);
- };
-
- OffsetPixelBuffer offsetPixelBuffer;
- ManagedPixelBuffer convertedPixelBuffer;
- };
- }
-
- #endif
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