mirror of
https://github.com/UberGames/GtkRadiant.git
synced 2024-12-18 08:21:09 +00:00
33efc90892
git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant/branches/ZeroRadiant@185 8a3a26a2-13c4-0310-b231-cf6edde360e5
402 lines
8.8 KiB
C++
402 lines
8.8 KiB
C++
/*
|
|
Copyright (C) 1999-2007 id Software, Inc. and contributors.
|
|
For a list of contributors, see the accompanying CONTRIBUTORS file.
|
|
|
|
This file is part of GtkRadiant.
|
|
|
|
GtkRadiant 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.
|
|
|
|
GtkRadiant 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 GtkRadiant; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <glib.h>
|
|
#include "bmp.h"
|
|
|
|
#include "image.h"
|
|
|
|
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);
|
|
}
|
|
*/
|
|
|
|
// FIXME: calls to Error(const char *, ... ) are dependant on qe3.cpp
|
|
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 file");// %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("Only 8BPP and 24BPP supported");
|
|
//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*>(g_malloc(sizeof(rgb_t) * 256));
|
|
|
|
for (i = 0; i < 256; i++)
|
|
{
|
|
if (fread(&q, sizeof(drgb_t), 1, f) != 1)
|
|
{
|
|
fclose(f); g_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*>(g_malloc(rowbytes));
|
|
|
|
// alloc space for new bitmap
|
|
bit->data = reinterpret_cast<unsigned char*>(g_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);
|
|
}
|
|
|
|
g_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("Only 8BPP and 24BPP supported");
|
|
//Error("BPP %d not supported.", bit->bpp);
|
|
}
|
|
|
|
|
|
if ((f = fopen(filename, "wb")) == NULL)
|
|
{
|
|
Error("Unable to open file");//%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*>(g_malloc(width * height * pixbytes));
|
|
|
|
if (bit->data == NULL)
|
|
{
|
|
Error("NewBMP: g_malloc failed.");
|
|
}
|
|
|
|
// see if we need to create a palette
|
|
if (pixbytes == 1)
|
|
{
|
|
bit->palette = (rgb_t *) g_malloc(768);
|
|
|
|
if (bit->palette == NULL)
|
|
{
|
|
Error("NewBMP: unable to g_malloc palette.");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
bit->palette = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
void FreeBMP(bitmap_t *bitmap)
|
|
{
|
|
if (bitmap->palette)
|
|
{
|
|
g_free(bitmap->palette);
|
|
bitmap->palette = NULL;
|
|
}
|
|
|
|
if (bitmap->data)
|
|
{
|
|
g_free(bitmap->data);
|
|
bitmap->data = NULL;
|
|
}
|
|
}
|
|
|
|
|