The Quake III Arena sources as originally released under the GPL license on August 20, 2005.
This commit is contained in:
Travis Bradshaw
commit
dbe4ddb103
1409 changed files with 806066 additions and 0 deletions
417
q3radiant/Bmp.cpp
Normal file
417
q3radiant/Bmp.cpp
Normal file
|
|
@ -0,0 +1,417 @@
|
|||
/*
|
||||
===========================================================================
|
||||
Copyright (C) 1999-2005 Id Software, Inc.
|
||||
|
||||
This file is part of Quake III Arena source code.
|
||||
|
||||
Quake III Arena source code 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.
|
||||
|
||||
Quake III Arena source code 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 Foobar; if not, write to the Free Software
|
||||
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
===========================================================================
|
||||
*/
|
||||
|
||||
#include "stdafx.h"
|
||||
#include <stdio.h>
|
||||
#include <malloc.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "bmp.h"
|
||||
|
||||
|
||||
void Error(char *fmt, ...);
|
||||
|
||||
|
||||
static int GetColorCount(int nbits)
|
||||
{
|
||||
int ncolors = 0;
|
||||
|
||||
if (nbits < 24)
|
||||
{
|
||||
ncolors = 1 << nbits;
|
||||
}
|
||||
|
||||
return(ncolors);
|
||||
}
|
||||
|
||||
|
||||
static void BMPLineNone(FILE *f, char *sline, int pixbytes, int width)
|
||||
{
|
||||
int nbytes, i, k, j;
|
||||
|
||||
switch (pixbytes)
|
||||
{
|
||||
case 1 :
|
||||
nbytes = (width + 3) / 4;
|
||||
nbytes *= 4;
|
||||
|
||||
fread(sline, width, 1, f);
|
||||
nbytes -= width;
|
||||
|
||||
while (nbytes-- > 0) fgetc(f);
|
||||
return;
|
||||
|
||||
case 3 :
|
||||
nbytes = ((width * 3) + 3) / 4;
|
||||
nbytes *= 4;
|
||||
|
||||
fread(sline, width, 3, f);
|
||||
nbytes -= width * 3;
|
||||
|
||||
while (nbytes-- > 0) fgetc(f);
|
||||
|
||||
// reorder bgr to rgb
|
||||
for (i = 0, j = 0; i < width; i++, j += 3)
|
||||
{
|
||||
k = sline[j];
|
||||
sline[j] = sline[j+2];
|
||||
sline[j+2] = k;
|
||||
}
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
Error("BMPLineNone failed.");
|
||||
}
|
||||
|
||||
|
||||
static void BMPLineRLE8(FILE *f, char *sline, int pixbytes, int width)
|
||||
{
|
||||
Error("RLE8 not yet supported.");
|
||||
}
|
||||
|
||||
|
||||
static void BMPLineRLE4(FILE *f, char *sline, int pixbytes, int width)
|
||||
{
|
||||
Error("RLE4 not yet supported.");
|
||||
}
|
||||
|
||||
|
||||
static void BMPLine(FILE *f, char *scanline, int pixbytes, int width, int rle)
|
||||
{
|
||||
switch (rle)
|
||||
{
|
||||
case xBI_NONE : BMPLineNone(f, scanline, pixbytes, width); return;
|
||||
case xBI_RLE8 : BMPLineRLE8(f, scanline, pixbytes, width); return;
|
||||
case xBI_RLE4 : BMPLineRLE4(f, scanline, pixbytes, width); return;
|
||||
}
|
||||
|
||||
Error("Unknown compression type.");
|
||||
}
|
||||
|
||||
|
||||
|
||||
static void PrintHeader(binfo_t *b)
|
||||
{
|
||||
printf("biSize : %ld\n", b->biSize);
|
||||
printf("biWidth : %ld\n", b->biWidth);
|
||||
printf("biHeight : %ld\n", b->biHeight);
|
||||
printf("biPlanes : %d\n", b->biPlanes);
|
||||
printf("biBitCount : %d\n", b->biBitCount);
|
||||
printf("biCompression : %ld\n", b->biCompression);
|
||||
printf("biSizeImage : %ld\n", b->biSizeImage);
|
||||
printf("biXPelsPerMeter: %ld\n", b->biXPelsPerMeter);
|
||||
printf("biYPelsPerMeter: %ld\n", b->biYPelsPerMeter);
|
||||
printf("biClrUsed : %ld\n", b->biClrUsed);
|
||||
printf("biClrImportant : %ld\n", b->biClrImportant);
|
||||
}
|
||||
|
||||
|
||||
void LoadBMP(char *filename, bitmap_t *bit)
|
||||
{
|
||||
FILE *f;
|
||||
bmphd_t bhd;
|
||||
binfo_t info;
|
||||
int pxlsize = 1;
|
||||
int rowbytes, i, pixbytes;
|
||||
char *scanline;
|
||||
|
||||
// open file
|
||||
if ((f = fopen(filename, "rb")) == NULL)
|
||||
{
|
||||
Error("Unable to open %s.", filename);
|
||||
}
|
||||
|
||||
// read in bitmap header
|
||||
if (fread(&bhd, sizeof(bhd), 1, f) != 1)
|
||||
{
|
||||
fclose(f);
|
||||
Error("Unable to read in bitmap header.");
|
||||
}
|
||||
|
||||
// make sure we have a valid bitmap file
|
||||
if (bhd.bfType != BMP_SIGNATURE_WORD)
|
||||
{
|
||||
fclose(f);
|
||||
Error("Invalid BMP file: %s", filename);
|
||||
}
|
||||
|
||||
// load in info header
|
||||
if (fread(&info, sizeof(info), 1, f) != 1)
|
||||
{
|
||||
fclose(f);
|
||||
Error("Unable to read bitmap info header.");
|
||||
}
|
||||
|
||||
// make sure this is an info type of bitmap
|
||||
if (info.biSize != sizeof(binfo_t))
|
||||
{
|
||||
fclose(f);
|
||||
Error("We only support the info bitmap type.");
|
||||
}
|
||||
|
||||
// PrintHeader(&info);
|
||||
|
||||
bit->bpp = info.biBitCount;
|
||||
bit->width = info.biWidth;
|
||||
bit->height = info.biHeight;
|
||||
bit->data = NULL;
|
||||
bit->palette = NULL;
|
||||
|
||||
//currently we only read in 8 and 24 bit bmp files
|
||||
if (info.biBitCount == 8) pixbytes = 1;
|
||||
else if (info.biBitCount == 24) pixbytes = 3;
|
||||
else
|
||||
{
|
||||
Error("BPP %d not supported.", info.biBitCount);
|
||||
}
|
||||
|
||||
// if this is an eight bit image load palette
|
||||
if (pixbytes == 1)
|
||||
{
|
||||
drgb_t q;
|
||||
|
||||
bit->palette = reinterpret_cast<rgb_t*>(malloc(sizeof(rgb_t) * 256));
|
||||
|
||||
for (i = 0; i < 256; i++)
|
||||
{
|
||||
if (fread(&q, sizeof(drgb_t), 1, f) != 1)
|
||||
{
|
||||
fclose(f); free(bit->palette);
|
||||
Error("Unable to read palette.");
|
||||
}
|
||||
|
||||
bit->palette[i].r = q.red;
|
||||
bit->palette[i].g = q.green;
|
||||
bit->palette[i].b = q.blue;
|
||||
}
|
||||
}
|
||||
|
||||
// position to start of bitmap
|
||||
fseek(f, bhd.bfOffBits, SEEK_SET);
|
||||
|
||||
// create scanline to read data into
|
||||
rowbytes = ((info.biWidth * pixbytes) + 3) / 4;
|
||||
rowbytes *= 4;
|
||||
|
||||
scanline = reinterpret_cast<char*>(malloc(rowbytes));
|
||||
|
||||
// alloc space for new bitmap
|
||||
bit->data = reinterpret_cast<unsigned char*>(malloc(info.biWidth * pixbytes * info.biHeight));
|
||||
|
||||
// read in image
|
||||
for (i = 0; i < info.biHeight; i++)
|
||||
{
|
||||
BMPLine(f, scanline, pixbytes, info.biWidth, info.biCompression);
|
||||
|
||||
// store line
|
||||
memcpy(&bit->data[info.biWidth * pixbytes * (info.biHeight - i - 1)], scanline, info.biWidth * pixbytes);
|
||||
}
|
||||
|
||||
free(scanline);
|
||||
fclose(f);
|
||||
}
|
||||
|
||||
|
||||
|
||||
static void BMPEncodeLine(FILE *f, unsigned char *data, int npxls, int pixbytes)
|
||||
{
|
||||
int nbytes, i, j, k;
|
||||
|
||||
switch (pixbytes)
|
||||
{
|
||||
case 1 :
|
||||
nbytes = (npxls + 3) / 4;
|
||||
nbytes *= 4;
|
||||
|
||||
fwrite(data, npxls, 1, f);
|
||||
nbytes -= npxls;
|
||||
|
||||
while (nbytes-- > 0) fputc(0, f);
|
||||
return;
|
||||
|
||||
case 3 :
|
||||
// reorder rgb to bgr
|
||||
for (i = 0, j = 0; i < npxls; i++, j+= 3)
|
||||
{
|
||||
k = data[j];
|
||||
data[j] = data[j + 2];
|
||||
data[j + 2] = k;
|
||||
}
|
||||
|
||||
nbytes = ((npxls * 3) + 3) / 4;
|
||||
nbytes *= 4;
|
||||
|
||||
fwrite(data, npxls, 3, f);
|
||||
nbytes -= npxls * 3;
|
||||
|
||||
while (nbytes-- > 0) fputc(0, f);
|
||||
return;
|
||||
}
|
||||
|
||||
Error("BMPEncodeLine Failed.");
|
||||
}
|
||||
|
||||
|
||||
|
||||
void WriteBMP(char *filename, bitmap_t *bit)
|
||||
{
|
||||
FILE *f;
|
||||
bmphd_t header;
|
||||
binfo_t info;
|
||||
drgb_t q; // palette that gets written
|
||||
long bmofs;
|
||||
int w, h, i;
|
||||
int pixbytes;
|
||||
|
||||
if (bit->bpp == 8) pixbytes = 1;
|
||||
else if (bit->bpp == 24) pixbytes = 3;
|
||||
|
||||
else
|
||||
{
|
||||
Error("BPP %d not supported.", bit->bpp);
|
||||
}
|
||||
|
||||
|
||||
if ((f = fopen(filename, "wb")) == NULL)
|
||||
{
|
||||
Error("Unable to open %s.", filename);
|
||||
}
|
||||
|
||||
// write out an empty header as a place holder
|
||||
if (fwrite(&header, sizeof(header), 1, f) != 1)
|
||||
{
|
||||
Error("Unable to fwrite.");
|
||||
}
|
||||
|
||||
// init and write info header
|
||||
info.biSize = sizeof(binfo_t);
|
||||
info.biWidth = bit->width;
|
||||
info.biHeight = bit->height;
|
||||
info.biPlanes = 1;
|
||||
info.biBitCount = bit->bpp;
|
||||
info.biCompression = xBI_NONE;
|
||||
info.biSizeImage = bit->width * bit->height;
|
||||
info.biXPelsPerMeter = 0;
|
||||
info.biYPelsPerMeter = 0;
|
||||
info.biClrUsed = 256;
|
||||
info.biClrImportant = 256;
|
||||
|
||||
if (fwrite(&info, sizeof(binfo_t), 1, f) != 1)
|
||||
{
|
||||
Error("fwrite failed.");
|
||||
}
|
||||
|
||||
// write out palette if we need to
|
||||
if (bit->bpp == 8)
|
||||
{
|
||||
for (i = 0; i < 256; i++)
|
||||
{
|
||||
q.red = bit->palette[i].r;
|
||||
q.green = bit->palette[i].g;
|
||||
q.blue = bit->palette[i].b;
|
||||
|
||||
fwrite(&q, sizeof(q), 1, f);
|
||||
}
|
||||
}
|
||||
|
||||
// save offset to start of bitmap
|
||||
bmofs = ftell(f);
|
||||
|
||||
// output bitmap
|
||||
w = bit->width;
|
||||
h = bit->height;
|
||||
|
||||
for (i = h - 1; i >= 0; i--)
|
||||
{
|
||||
BMPEncodeLine(f, &bit->data[w * pixbytes * i], w, pixbytes);
|
||||
}
|
||||
|
||||
// update and rewrite file header
|
||||
header.bfType = BMP_SIGNATURE_WORD;
|
||||
header.bfSize = ftell(f);
|
||||
header.bfOffBits = bmofs;
|
||||
|
||||
fseek(f, 0L, SEEK_SET);
|
||||
fwrite(&header, sizeof(header), 1, f);
|
||||
|
||||
fclose(f);
|
||||
}
|
||||
|
||||
|
||||
void NewBMP(int width, int height, int bpp, bitmap_t *bit)
|
||||
{
|
||||
int pixbytes;
|
||||
|
||||
if (bpp == 8) pixbytes = 1;
|
||||
else if (bpp == 24) pixbytes = 3;
|
||||
|
||||
else
|
||||
{
|
||||
Error("NewBMP: 8 or 24 bit only.");
|
||||
}
|
||||
|
||||
bit->bpp = bpp;
|
||||
bit->width = width;
|
||||
bit->height = height;
|
||||
|
||||
bit->data = reinterpret_cast<unsigned char*>(malloc(width * height * pixbytes));
|
||||
|
||||
if (bit->data == NULL)
|
||||
{
|
||||
Error("NewBMP: malloc failed.");
|
||||
}
|
||||
|
||||
// see if we need to create a palette
|
||||
if (pixbytes == 1)
|
||||
{
|
||||
bit->palette = (rgb_t *) malloc(768);
|
||||
|
||||
if (bit->palette == NULL)
|
||||
{
|
||||
Error("NewBMP: unable to malloc palette.");
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
bit->palette = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
void FreeBMP(bitmap_t *bitmap)
|
||||
{
|
||||
if (bitmap->palette)
|
||||
{
|
||||
free(bitmap->palette);
|
||||
bitmap->palette = NULL;
|
||||
}
|
||||
|
||||
if (bitmap->data)
|
||||
{
|
||||
free(bitmap->data);
|
||||
bitmap->data = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Loading…
Add table
Add a link
Reference in a new issue