physicalwindow.h

Linux下比较早的基于命令行的DVD播放器

//
// Copyright (c) 2005 by Istv醤 V醨adi
//
// This file is part of dxr3Player, a DVD player written specifically 
// for the DXR3 (aka Hollywood+) decoder card, but now handles other
// hardware as well. These files contain a (mostly) user-space driver 
// for the Unichrome board found on Via's EPIA motherboards.
//
// The information for implementing this driver has been gathered
// from the following sources:
//
// - The DirectFB Unichrome driver
//   Copyright (c) 2003 Andreas Robinson, All rights reserved.
//
// - Andreas Robinson's MPEG-2 decoder for the Unichrome board.
//   Copyright (c) 2003 Andreas Robinson, All rights reserved.
//
// - Via's Unichrome Framebuffer driver
//   Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
//   Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.


// 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 2 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, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

#ifndef UNICHROME_PHYSICALWINDOW_H
#define UNICHROME_PHYSICALWINDOW_H
//------------------------------------------------------------------------------

#include "Window.h"

//------------------------------------------------------------------------------

namespace unichrome {

//------------------------------------------------------------------------------

class Unichrome;
class MemoryBlock;

//------------------------------------------------------------------------------

/**
 * A "physical" window in the Unichrome board's memory. It is directly
 * associated with the memory. It may have LogicalWindow children.
 */
class PhysicalWindow : public Window
{
private:
    /**
     * Get the real pitch based on the given data.
     */
    static size_t computePitch(size_t width,  size_t pitch);

    /**
     * Get the real height based on the given data.
     */
    static size_t computeHeight(const MemoryBlock& memoryBlock,
                                size_t width, size_t height,
                                size_t pitch);

    /**
     * The Unichrome board.
     */
    Unichrome& unichrome;

    /**
     * The offset of the window within the card's memory.
     */
    size_t offset;

    /**
     * The pitch of the window within the card's memory.
     */
    size_t pitch;

public:
    /**
     * Construct a window for the given Unichrome board at the given
     * offset.
     */
    PhysicalWindow(Unichrome& unichrome, size_t offset, 
                   size_t width, size_t height,
                   size_t pitch = 0,
                   size_t x = 0, size_t y = 0);

    /**
     * Construct a window for the given memory block.
     */
    PhysicalWindow(const MemoryBlock& memoryBlock, 
                   size_t width, size_t height = 0,
                   size_t pitch = 0,
                   size_t x = 0, size_t y = 0);

    /**
     * Set the foreground colour.
     */
    virtual void setForeground(uint32_t color);

    /**
     * Set the background colour.
     */
    virtual void setBackground(uint32_t color);

    /**
     * Disable colour keying.
     */
    virtual void disableKeying();

    /**
     * Enable source colour keying.
     *
     * @param invert invert the key, i.e. copy only those pixels that
     *               are equal to the source key, but only their alpha
     *               values.
     */
    virtual void enableSourceKeying(bool invert = false);

    /**
     * Set the source colour key.
     */
    virtual void setSourceKey(uint32_t color);

    /**
     * Setup a monochrome pattern.
     */
    virtual void setMonoPattern(const uint32_t pattern[2], 
                                size_t xOffset, size_t yOffset);

    /**
     * Draw a line.
     */
    virtual void drawLine(size_t x1, size_t y1, size_t x2, size_t y2);

    /**
     * Fill rectangle.
     */
    virtual void fillRectangle(size_t x, size_t y, 
                               size_t width, size_t height);

    /**
     * Blit from the given starting position and size to the given
     * destination position.
     */
    virtual void blit(size_t x, size_t y,
                      size_t width, size_t height,
                      size_t dx, size_t dy,
                      blitType_t blitType = BLIT_COPY);

    /**
     * Draw an arc to the window at the given position.
     */
    virtual void drawArc(size_t x, size_t y, size_t width, size_t height, 
                         ssize_t x0, ssize_t y0, size_t r1, size_t r2,
                         uint32_t arcColor,
                         uint32_t innerColor = Painter::transparentColor, 
                         uint32_t outerColor = Painter::transparentColor);

    /**
     * Set the area belonging to this window as the source. Both the
     * source base address and the pitch are set.
     */
    virtual void setSource();

    /**
     * Set the area belonging to this window as the destination.
     */
    virtual void setDestination();
};

//------------------------------------------------------------------------------

} /* namespace unichrome */

//------------------------------------------------------------------------------
#endif // UNICHROME_PHYSICALWINDOW_H

// Local variables:
// mode: c++
// End: