kopia lustrzana https://github.com/Jean-MarcHarvengt/MCUME
152 wiersze
3.9 KiB
C
152 wiersze
3.9 KiB
C
/*
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** Nofrendo (c) 1998-2000 Matthew Conte (matt@conte.com)
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**
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**
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** This program is free software; you can redistribute it and/or
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** modify it under the terms of version 2 of the GNU Library General
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** Public License as published by the Free Software Foundation.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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** Library General Public License for more details. To obtain a
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** copy of the GNU Library General Public License, write to the Free
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** Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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**
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** Any permitted reproduction of these routines, in whole or in part,
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** must bear this legend.
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**
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**
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** bitmap.c
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**
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** Bitmap object manipulation routines
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** $Id: bitmap.c,v 1.2 2001/04/27 14:37:11 neil Exp $
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*/
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#include <stdio.h>
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#include <string.h>
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#include "noftypes.h"
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#include "bitmap.h"
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// JMH this file had to be adapted for the ESP
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#include "emuapi.h"
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void bmp_clear(const bitmap_t *bitmap, uint8 color)
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{
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memset(bitmap->data, color, bitmap->pitch * bitmap->height);
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}
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static bitmap_t *_make_bitmap(uint8 *data_addr, bool hw, int width,
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int height, int pitch, int overdraw)
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{
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bitmap_t *bitmap;
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int i;
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/* quick safety check */
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if (NULL == data_addr)
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return NULL;
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/* Make sure to add in space for line pointers */
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bitmap = emu_Malloc(sizeof(bitmap_t) + (sizeof(uint8 *) * height));
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if (NULL == bitmap)
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{
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return NULL;
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}
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bitmap->hardware = hw;
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bitmap->height = height;
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bitmap->width = width;
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bitmap->data = data_addr;
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bitmap->pitch = pitch + (overdraw * 2);
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/* Set up line pointers */
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/* we want to make some 32-bit aligned adjustment
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** if we haven't been given a hardware bitmap
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*/
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//printf("setting up bitmap %d\n",(int)bitmap);
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for (i = 0; i < height; i++) {
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bitmap->line[i] = emu_Malloc(pitch); //emu_LineBuffer(i);
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}
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return bitmap;
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}
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static char fb[1];
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/* Allocate and initialize a bitmap structure */
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bitmap_t *bmp_create(int width, int height, int overdraw)
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{
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// uint8 *addr;
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// int pitch;
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//
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// pitch = width + (overdraw * 2); /* left and right */
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// addr = malloc((pitch * height) + 3); /* add max 32-bit aligned adjustment */
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// if (NULL == addr)
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// return NULL;
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//printf("bmp_create\n");
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return _make_bitmap((uint8*)fb, false, width, height, width, overdraw);
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}
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/* allocate and initialize a hardware bitmap */
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bitmap_t *bmp_createhw(uint8 *addr, int width, int height, int pitch)
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{
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return _make_bitmap(addr, true, width, height, pitch, 0); /* zero overdraw */
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}
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/* Deallocate space for a bitmap structure */
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void bmp_destroy(bitmap_t **bitmap)
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{
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if (*bitmap)
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{
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free(*bitmap);
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*bitmap = NULL;
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}
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}
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/*
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** $Log: bitmap.c,v $
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** Revision 1.2 2001/04/27 14:37:11 neil
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** wheeee
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**
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** Revision 1.1.1.1 2001/04/27 07:03:54 neil
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** initial
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**
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** Revision 1.16 2000/11/05 16:37:18 matt
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** rolled rgb.h into bitmap.h
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**
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** Revision 1.15 2000/10/10 13:58:13 matt
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** stroustrup squeezing his way in the door
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**
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** Revision 1.14 2000/09/18 02:06:48 matt
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** -pedantic is your friend
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**
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** Revision 1.13 2000/08/13 13:16:30 matt
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** bugfix for alignment adjustment
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**
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** Revision 1.12 2000/07/24 04:31:43 matt
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** pitch/data area on non-hw bitmaps get padded to 32-bit boundaries
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**
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** Revision 1.11 2000/07/17 01:52:27 matt
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** made sure last line of all source files is a newline
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**
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** Revision 1.10 2000/07/09 14:43:01 matt
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** pitch is now configurable for bmp_createhw()
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**
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** Revision 1.9 2000/07/06 17:55:57 matt
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** two big bugs fixed
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**
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** Revision 1.8 2000/07/06 17:38:11 matt
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** replaced missing string.h include
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**
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** Revision 1.7 2000/07/06 16:46:57 matt
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** added bmp_clear() routine
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**
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** Revision 1.6 2000/06/26 04:56:24 matt
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** minor cleanup
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**
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** Revision 1.5 2000/06/09 15:12:25 matt
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** initial revision
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**
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*/
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