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/*******************************************************************************
* apps/graphics/traveler/src/trv_bitmaps.c
* This file contains low-level texture bitmap logic
*
* 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.
*
****************************************************************************/
/****************************************************************************
* Included files
****************************************************************************/
#include "trv_types.h"
#include "trv_mem.h"
#include "trv_bitmaps.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/* These point to the (allocated) bit map buffers for the even and odd
* bitmaps
*/
FAR struct trv_bitmap_s *g_even_bitmaps[MAX_BITMAPS];
#ifndef WEDIT
FAR struct trv_bitmap_s *g_odd_bitmaps[MAX_BITMAPS];
#endif
/* This is the maximum value + 1 of a texture code. */
uint16_t g_trv_nbitmaps;
/* These are the colors from the world palette which should used to rend
* the sky and ground
*/
trv_pixel_t g_sky_color;
trv_pixel_t g_ground_color;
/****************************************************************************
* Private Functions
****************************************************************************/
/*************************************************************************
* Name: trv_free_texture
*
* Description:
* Free both the bitmap and the bitmap container
*
************************************************************************/
static void trv_free_texture(FAR struct trv_bitmap_s *bitmap)
{
if (bitmap->bm)
{
trv_free(bitmap->bm);
}
trv_free(bitmap);
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: trv_initialize_bitmaps
*
* Description:
*
***************************************************************************/
int trv_initialize_bitmaps(void)
{
int i;
for (i = 0; i < MAX_BITMAPS; i++)
{
g_even_bitmaps[i] = NULL;
#ifndef WEDIT
g_odd_bitmaps[i] = NULL;
#endif
}
g_trv_nbitmaps = 0;
return OK;
}
/*************************************************************************
* Name: trv_free_bitmaps
*
* Description:
* This function deallocates all bitmaps.
*
************************************************************************/
void trv_free_bitmaps(void)
{
int i;
for (i = 0; i < MAX_BITMAPS; i++)
{
if (g_even_bitmaps[i])
{
trv_free_texture(g_even_bitmaps[i]);
g_even_bitmaps[i] = NULL;
}
#ifndef WEDIT
if (g_odd_bitmaps[i])
{
trv_free_texture(g_odd_bitmaps[i]);
g_odd_bitmaps[i] = NULL;
}
#endif
}
g_trv_nbitmaps = 0;
}
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