uchelper.h

Linux下比较早的基于命令行的DVD播放器

//
// Copyright (c) 2004 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 DXR3PLAYER_UNICHROME_UCHELPER_H
#define DXR3PLAYER_UNICHROME_UCHELPER_H
//------------------------------------------------------------------------------

#include <asm/types.h>
#include <linux/ioctl.h>

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

/**
 * Parameter structure for flipping.
 */
typedef struct {
    /**
     * The buffer offset to flip to.
     */
    unsigned offset;

    /**
     * The field count at which the flip should take place.
     * If 0, the flip will take place at the next field and the 
     * driver's field count will be reset to 0 as well.
     */
    unsigned field;

    /**
     * Indicate if the field was displayed. It will be 0, if it was
     * skipped for some reason.
     */
    int displayed;
} flip_param_t;

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

#define UCHELPER_IOCTL_TYPE     'U'

#define UCHELPER_CTL_FLIP       _IOWR(UCHELPER_IOCTL_TYPE, 1, flip_param_t)

#define UCHELPER_CTL_GET_COUNT  _IOR(UCHELPER_IOCTL_TYPE, 2, unsigned)

//------------------------------------------------------------------------------
#endif // DXR3PLAYER_UNICHROME_UCHELPER_H

// Local variables:
// mode: C
// c-basic-offset: 4
// indent-tabs-mode: nil
// End: