Migrating to new directory structure adopted from the RealVNC's source tree. More changes will follow.
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@589 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/rfb/PixelBuffer.h b/common/rfb/PixelBuffer.h
new file mode 100644
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--- /dev/null
+++ b/common/rfb/PixelBuffer.h
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+/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
+ *
+ * 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.
+ */
+
+// -=- PixelBuffer.h
+//
+// The PixelBuffer class encapsulates the PixelFormat and dimensions
+// of a block of pixel data.
+
+#ifndef __RFB_PIXEL_BUFFER_H__
+#define __RFB_PIXEL_BUFFER_H__
+
+#include <rfb/ImageGetter.h>
+#include <rfb/PixelFormat.h>
+#include <rfb/ColourMap.h>
+#include <rfb/Rect.h>
+#include <rfb/Pixel.h>
+
+namespace rfb {
+
+ class Region;
+
+ class PixelBuffer : public ImageGetter {
+ public:
+ PixelBuffer(const PixelFormat& pf, int width, int height, ColourMap* cm);
+ virtual ~PixelBuffer();
+
+ ///////////////////////////////////////////////
+ // Format / Layout
+ //
+
+ // Set/get pixel format & colourmap
+ virtual void setPF(const PixelFormat &pf);
+ virtual const PixelFormat &getPF() const;
+ virtual ColourMap* getColourMap() const;
+
+ // Get width, height and number of pixels
+ int width() const { return width_; }
+ int height() const { return height_; }
+ int area() const { return width_ * height_; }
+
+ // Get rectangle encompassing this buffer
+ // Top-left of rectangle is either at (0,0), or the specified point.
+ Rect getRect() const { return Rect(0, 0, width_, height_); }
+ Rect getRect(const Point& pos) const {
+ return Rect(pos, pos.translate(Point(width_, height_)));
+ }
+
+ ///////////////////////////////////////////////
+ // Access to pixel data
+ //
+
+ // Get a pointer into the buffer
+ // The pointer is to the top-left pixel of the specified Rect.
+ // The buffer stride (in pixels) is returned.
+ virtual const rdr::U8* getPixelsR(const Rect& r, int* stride) = 0;
+
+ // Get pixel data for a given part of the buffer
+ // Data is copied into the supplied buffer, with the specified
+ // stride.
+ virtual void getImage(void* imageBuf, const Rect& r, int stride=0);
+
+ // Get the data at (x,y) as a Pixel.
+ // VERY INEFFICIENT!!!
+ // *** Pixel getPixel(const Point& p);
+
+ ///////////////////////////////////////////////
+ // Framebuffer update methods
+ //
+
+ // Ensure that the specified rectangle of buffer is up to date.
+ // Overridden by derived classes implementing framebuffer access
+ // to copy the required display data into place.
+ virtual void grabRegion(const Region& region) {}
+
+ protected:
+ PixelBuffer();
+ PixelFormat format;
+ int width_, height_;
+ ColourMap* colourmap;
+ };
+
+ // FullFramePixelBuffer
+
+ class FullFramePixelBuffer : public PixelBuffer {
+ public:
+ FullFramePixelBuffer(const PixelFormat& pf, int width, int height,
+ rdr::U8* data_, ColourMap* cm);
+ virtual ~FullFramePixelBuffer();
+
+ // - Get the number of pixels per row in the actual pixel buffer data area
+ // This may in some cases NOT be the same as width().
+ virtual int getStride() const;
+
+ // Get a pointer to specified pixel data
+ virtual rdr::U8* getPixelsRW(const Rect& r, int* stride);
+ virtual const rdr::U8* getPixelsR(const Rect& r, int* stride) {
+ return getPixelsRW(r, stride);
+ }
+
+ ///////////////////////////////////////////////
+ // Basic rendering operations
+ // These operations DO NOT clip to the pixelbuffer area, or trap overruns.
+
+ // Fill a rectangle
+ virtual void fillRect(const Rect &dest, Pixel pix);
+
+ // Copy pixel data to the buffer
+ virtual void imageRect(const Rect &dest, const void* pixels, int stride=0);
+
+ // Copy pixel data from one PixelBuffer location to another
+ virtual void copyRect(const Rect &dest, const Point &move_by_delta);
+
+ // Copy pixel data to the buffer through a mask
+ // pixels is a pointer to the pixel to be copied to r.tl.
+ // maskPos specifies the pixel offset in the mask to start from.
+ // mask_ is a pointer to the mask bits at (0,0).
+ // pStride and mStride are the strides of the pixel and mask buffers.
+ virtual void maskRect(const Rect& r, const void* pixels, const void* mask_);
+
+ // pixel is the Pixel value to be used where mask_ is set
+ virtual void maskRect(const Rect& r, Pixel pixel, const void* mask_);
+
+ // *** Should this be visible?
+ rdr::U8* data;
+
+ protected:
+ FullFramePixelBuffer();
+ };
+
+ // -=- Managed pixel buffer class
+ // Automatically allocates enough space for the specified format & area
+
+ class ManagedPixelBuffer : public FullFramePixelBuffer {
+ public:
+ ManagedPixelBuffer();
+ ManagedPixelBuffer(const PixelFormat& pf, int width, int height);
+ virtual ~ManagedPixelBuffer();
+
+ // Manage the pixel buffer layout
+ virtual void setPF(const PixelFormat &pf);
+ virtual void setSize(int w, int h);
+
+ // Assign a colour map to the buffer
+ virtual void setColourMap(ColourMap* cm, bool own_cm);
+
+ // Return the total number of bytes of pixel data in the buffer
+ int dataLen() const { return width_ * height_ * (format.bpp/8); }
+
+ protected:
+ unsigned long datasize;
+ bool own_colourmap;
+ void checkDataSize();
+ };
+
+};
+
+#endif // __RFB_PIXEL_BUFFER_H__