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/****************************************************************************
* apps/graphics/traveler/include/trv_bitmaps.h
* This file contains definitions for the texture bitmaps
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __APPS_GRAPHICS_TRAVELER_INCLUDE_TRV_BITMAPS_H
#define __APPS_GRAPHICS_TRAVELER_INCLUDE_TRV_BITMAPS_H
/****************************************************************************
* Included Files
****************************************************************************/
#include "trv_types.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define BITMAP_WIDTH 64
#define BITMAP_HEIGHT 64
#define BITMAP_LOG2H 6
#define BITMAP_SIZE (BITMAP_WIDTH * BITMAP_HEIGHT)
#define BITMAP_IMASK (BITMAP_HEIGHT-1)
#define BITMAP_JMASK (BITMAP_WIDTH-1)
#define BITMAP_JSHIFT 6
#define BMICLIP(i) ((i) & BITMAP_IMASK)
#define BMJCLIP(i) ((i) & BITMAP_JMASK)
#define BMOFFSET(i,j) (((i) << BITMAP_JSHIFT) | (j))
#define MAX_BITMAPS 256
/****************************************************************************
* Public Types
****************************************************************************/
struct trv_bitmap_s
{
uint16_t w;
uint16_t h;
uint8_t log2h;
FAR trv_pixel_t *bm;
};
/****************************************************************************
* Public Data
****************************************************************************/
/* These point to the (allocated) bit map buffers for the even and odd
* bitmaps
*/
extern FAR struct trv_bitmap_s *g_even_bitmaps[MAX_BITMAPS];
#ifndef WEDIT
extern FAR struct trv_bitmap_s *g_odd_bitmaps[MAX_BITMAPS];
#endif
/* This is the maximum value + 1 of a texture code */
extern uint16_t g_trv_nbitmaps;
/* These are the colors from the worldPalette which should used to rend
* the sky and ground
*/
extern trv_pixel_t g_sky_color;
extern trv_pixel_t g_ground_color;
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
int trv_initialize_bitmaps(void);
void trv_release_bitmaps(void);
int trv_load_bitmapfile(FAR const char *bitmapfile, FAR const char *wldpath);
FAR struct trv_bitmap_s *trv_read_texture(FAR const char *filename);
#endif /* __APPS_GRAPHICS_TRAVELER_INCLUDE_TRV_BITMAPS_H */
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