MPEGfilter.h
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/*
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 */
#ifndef _MPEGFILTER_H_
#define _MPEGFILTER_H_
/* SMPEG filter info flags */
#define SMPEG_FILTER_INFO_MB_ERROR 1
#define SMPEG_FILTER_INFO_PIXEL_ERROR 2
/* Filter info from SMPEG */
typedef struct SMPEG_FilterInfo {
Uint16* yuv_mb_square_error;
Uint16* yuv_pixel_square_error;
} SMPEG_FilterInfo;
/* MPEG filter definition */
struct SMPEG_Filter;
/* 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)( struct SMPEG_Filter * filter );
/* The filter definition itself */
typedef struct SMPEG_Filter {
Uint32 flags;
void * data;
SMPEG_FilterCallback callback;
SMPEG_FilterDestroy destroy;
} SMPEG_Filter;
/* SMPEG built-in filters. */
#ifdef __cplusplus
extern "C" {
#endif
/* The null filter (default). It simply copies the source rectangle to the video overlay. */
extern DECLSPEC SMPEG_Filter * SMPEGfilter_null(void);
/* The bilinear filter. A basic low-pass filter that will produce a smoother image. */
extern DECLSPEC SMPEG_Filter * SMPEGfilter_bilinear(void);
/* The deblocking filter. It filters block borders and non-intra coded blocks to reduce blockiness */
extern DECLSPEC SMPEG_Filter * SMPEGfilter_deblocking(void);
#ifdef __cplusplus
};
#endif
#endif /* _MPEGFILTER_H_ */