module SDL_smpeg_filter;
/*
  SMPEG - SDL MPEG Player Library
  Copyright (C) 1999  Loki Entertainment Software

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Library General Public
  License as published by the Free Software Foundation; either
  version 2 of the License, or (at your option) any later version.

  This library 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
  Library General Public License for more details.

  You should have received a copy of the GNU Library General Public
  License along with this library; if not, write to the Free
  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

/* MPEG filters */

// convert to D by shinichiro.h

private import SDL;

extern (C) {

/* SMPEG filter info flags */
	const int SMPEG_FILTER_INFO_MB_ERROR = 1;
	const int SMPEG_FILTER_INFO_PIXEL_ERROR = 2;

/* Filter info from SMPEG */
	struct SMPEG_FilterInfo {
		Uint16* yuv_mb_square_error;
		Uint16* yuv_pixel_square_error;
	}

/* Callback functions for the filter */
	typedef void (* SMPEG_FilterCallback)( SDL_Overlay * dest, SDL_Overlay * source, SDL_Rect * region, SMPEG_FilterInfo * filter_info, void * data );
	typedef void (* SMPEG_FilterDestroy)( SMPEG_Filter * filter );

/* The filter definition itself */
	struct SMPEG_Filter {
		Uint32 flags;
		void * data;
		SMPEG_FilterCallback callback;
		SMPEG_FilterDestroy destroy;
	}

/* The null filter (default). It simply copies the source rectangle to the video overlay. */ 
	SMPEG_Filter * SMPEGfilter_null();

/* The bilinear filter. A basic low-pass filter that will produce a smoother image. */ 
	SMPEG_Filter * SMPEGfilter_bilinear();

/* The deblocking filter. It filters block borders and non-intra coded blocks to reduce blockiness */ 
	SMPEG_Filter * SMPEGfilter_deblocking();

}
