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/*
*
* Copyright (C) 2000 Thomas Mirlacher
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* The author may be reached as <dent@linuxvideo.org>
*
*------------------------------------------------------------
*
*/
#ifndef __ALPHABLEND_H__
#define __ALPHABLEND_H__
#include "video_out.h"
/* _MSC_VER port changes */
#undef ATTRIBUTE_PACKED
#undef PRAGMA_PACK_BEGIN
#undef PRAGMA_PACK_END
#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95) || defined(__ICC)
#define ATTRIBUTE_PACKED __attribute__ ((packed))
#define PRAGMA_PACK 0
#endif
#if !defined(ATTRIBUTE_PACKED)
#define ATTRIBUTE_PACKED
#define PRAGMA_PACK 1
#endif
#if PRAGMA_PACK
#pragma pack(8)
#endif
typedef struct { /* CLUT == Color LookUp Table */
uint8_t cb : 8;
uint8_t cr : 8;
uint8_t y : 8;
uint8_t foo : 8;
} ATTRIBUTE_PACKED clut_t;
#if PRAGMA_PACK
#pragma pack()
#endif
#define XX44_PALETTE_SIZE 32
typedef struct {
unsigned size;
unsigned max_used;
uint32_t cluts[XX44_PALETTE_SIZE];
/* cache palette entries for both colors and clip_colors */
int lookup_cache[OVL_PALETTE_SIZE*2];
} xx44_palette_t;
void blend_rgb16 (uint8_t * img, vo_overlay_t * img_overl,
int img_width, int img_height,
int dst_width, int dst_height);
void blend_rgb24 (uint8_t * img, vo_overlay_t * img_overl,
int img_width, int img_height,
int dst_width, int dst_height);
void blend_rgb32 (uint8_t * img, vo_overlay_t * img_overl,
int img_width, int img_height,
int dst_width, int dst_height);
void blend_yuv (uint8_t *dst_base[3], vo_overlay_t * img_overl,
int dst_width, int dst_height, int dst_pitches[3]);
void blend_yuy2 (uint8_t * dst_img, vo_overlay_t * img_overl,
int dst_width, int dst_height, int dst_pitch);
/*
* This function isn't too smart about blending. We want to avoid creating new
* colors in the palette as a result from two non-zero colors needed to be
* blended. Instead we choose the color with the highest alpha value to be
* visible. Some parts of the code taken from the "VeXP" project.
*/
void blend_xx44 (uint8_t *dst_img, vo_overlay_t *img_overl,
int dst_width, int dst_height, int dst_pitch,
xx44_palette_t *palette,int ia44);
/*
* Functions to handle the xine-specific palette.
*/
void clear_xx44_palette(xx44_palette_t *p);
void init_xx44_palette(xx44_palette_t *p, unsigned num_entries);
void dispose_xx44_palette(xx44_palette_t *p);
/*
* Convert the xine-specific palette to something useful.
*/
void xx44_to_xvmc_palette(const xx44_palette_t *p,unsigned char *xvmc_palette,
unsigned first_xx44_entry, unsigned num_xx44_entries,
unsigned num_xvmc_components, char *xvmc_components);
#endif
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