overlay.h

Linux下比较早的基于命令行的DVD播放器

//
// Copyright (c) 2003 by Istv醤 V醨adi
//
// This file is part of dxr3Player, a DVD player written specifically 
// for the DXR3 (aka Hollywood+) decoder card.

// 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 DXR3_OVERLAY_H
#define DXR3_OVERLAY_H
//------------------------------------------------------------------------------

#include <cstdlib>

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

namespace dxr3 {

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

class DXR3;

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

/**
 * Overlay handler.
 */
class Overlay
{
private:
    /**
     * Enumerated type for the signal modes.
     */
    typedef enum signalMode_t {
        /**
         * Full-screen
         */
        SIGNAL_ONLY = 1,

        /**
         * Overlay with VGA.
         */
        SIGNAL_WITH_VGA = 2,
        
        /**
         * Only VGA (i.e. no overlay).
         */
        VGA_ONLY = 3
    };

    /**
     * The DXR3 we belong to.
     */
    DXR3& dxr3;

    /**
     * The width of the screen.
     */
    size_t width;

    /**
     * The height of the screen.
     */
    size_t height;

    /**
     * The current signal mode.
     */
    signalMode_t signalMode;

public:
    /**
     * Construct the overlay handler with the given DXR3
     */
    Overlay(DXR3* dxr3);

    /**
     * Destroy the overlay.
     */
    ~Overlay();
    
    /**
     * Initialize
     */
    void initialize();

    /**
     * Toggle the overlay mode.
     */
    void toggleOverlayMode();

private:
    /**
     * Setup the resolution
     */
    size_t setupResolution();

    /**
     * Set the given attribute
     */
    void setAttribute(int attribute, int value);

    /**
     * Set the signal mode to the given value.
     */
    void setSignalMode(signalMode_t mode);
};

//------------------------------------------------------------------------------
// Inline definitions
//------------------------------------------------------------------------------

inline Overlay::Overlay(DXR3* dxr3) : 
    dxr3(*dxr3),
    width(640),
    height(480),
    signalMode(VGA_ONLY)
{
}

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

} /* namespace dxr3 */

//------------------------------------------------------------------------------
#endif // DXR3_OVERLAY_H

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