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Changed Moved LoadBMP into the OpenArena namespace

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~g2k
This commit is contained in:
Tom Hicks
2006-06-18 14:30:52 -04:00
parent 64c8c11d0c
commit b03bdb0cbc
2 changed files with 163 additions and 155 deletions
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4
include/bmp.h
View File

@@ -5,6 +5,8 @@
#include "datatypes.h"
#include "texture.h"
TextureImage* LoadBMP(const char* Filename);
namespace OpenArena{
TextureImage* LoadBMP(const char* Filename);
};
#endif

314
src/bmp.cpp
View File

@@ -20,175 +20,181 @@
#include <cstdio>
#include "../include/bmp.h"
#ifdef WIN32
#pragma warning(disable:4996)
#endif
namespace OpenArena{
#pragma pack(push,1)
struct BITMAP_HEADER
{
uint16 type;
uint32 size;
uint16 reserved1;
uint16 reserved2;
uint32 offset;
};
struct BITMAP_HEADER
{
uint16 type;
uint32 size;
uint16 reserved1;
uint16 reserved2;
uint32 offset;
};
struct BITMAP_INFO
{
uint32 size;
uint32 width;
uint32 height;
uint16 planes;
uint16 bitCount;
uint32 compression;
uint32 sizeImage;
uint32 xPelsPerMeter;
uint32 yPelsPerMeter;
uint32 clrUsed;
uint32 clrImportant;
};
struct BITMAP_INFO
{
uint32 size;
uint32 width;
uint32 height;
uint16 planes;
uint16 bitCount;
uint32 compression;
uint32 sizeImage;
uint32 xPelsPerMeter;
uint32 yPelsPerMeter;
uint32 clrUsed;
uint32 clrImportant;
};
struct BITMAP_QUAD
{
uint8 blue;
uint8 green;
uint8 red;
uint8 reserved;
};
struct BITMAP_QUAD
{
uint8 blue;
uint8 green;
uint8 red;
uint8 reserved;
};
#pragma pack(pop)
#define BITMAP_MAGIC 19778
TextureImage* LoadBMP(const char* fn)
{
//If anything is not perfect return NULL after cleaning up our mess
FILE* f=NULL; //A pointer to our file structure
//If our filename is null
if(!fn)
return NULL;
//Try to open our file and if successfull...
f=fopen(fn, "rb");
if(f)
TextureImage* LoadBMP(const char* fn)
{
BITMAP_HEADER bmpHeader;
BITMAP_INFO bmpInfo;
BITMAP_QUAD* bmpPallette = NULL;
uint32 palletteEntries = 0;
fread(&bmpHeader, sizeof(bmpHeader), 1, f);
fread(&bmpInfo, sizeof(bmpInfo), 1, f);
if(bmpInfo.width < 0)
{
//This needs to be abstracted somehow
#ifdef WIN32
MessageBox(NULL, "Image width is negative", "ERROR", MB_OK);
#endif
fclose(f);
//If anything is not perfect return NULL after cleaning up our mess
FILE* f=NULL; //A pointer to our file structure
//If our filename is null
if(!fn)
return NULL;
}
if(bmpInfo.width % 4 != 0)
//Try to open our file and if successfull...
f=fopen(fn, "rb");
if(f)
{
//This needs to be abstracted somehow
#ifdef WIN32
MessageBox(NULL, "Image width must be a multiple of 8", "ERROR", MB_OK);
#endif
fclose(f);
return NULL;
}
if(bmpInfo.height < 0)
{
//This needs to be abstracted somehow
#ifdef WIN32
MessageBox(NULL, "Image height is negative", "ERROR", MB_OK);
#endif
fclose(f);
return NULL;
}
if(bmpInfo.height % 4 != 0)
{
//This needs to be abstracted somehow
#ifdef WIN32
MessageBox(NULL, "Image height must be a multiple of 8", "ERROR", MB_OK);
#endif
fclose(f);
return NULL;
}
if((bmpInfo.bitCount != 8 && bmpInfo.bitCount != 24) || bmpInfo.compression != 0)
{
//This needs to be abstracted somehow
#ifdef WIN32
MessageBox(NULL, "Only 8 and 24 bit uncompressed windows bmp files are currently supported", "ERROR", MB_OK);
#endif
fclose(f);
return NULL;
}
//Allocate memory for a TextureImage structure
TextureImage* tex = new TextureImage;
tex->sizeX = bmpInfo.width;
tex->sizeY = bmpInfo.height;
if(bmpInfo.bitCount >= 8)
{
tex->bpp = bmpInfo.bitCount >> 3;
}
tex->type = GL_RGB;
uint32 pixels = tex->sizeX * tex->sizeY;
uint32 bytes = pixels * tex->bpp;
tex->data = new uint8[bytes];
if(bmpInfo.bitCount == 8)
{
//Load the pallette
palletteEntries = bmpInfo.bitCount << 8;
bmpPallette = new BITMAP_QUAD[palletteEntries];
fread(bmpPallette, sizeof(BITMAP_QUAD), palletteEntries, f);
}
fseek(f, bmpHeader.offset, SEEK_SET);
fread(tex->data, bytes, 1, f);
if(bmpInfo.bitCount == 8)
{
//Apply the pallette
uint8* image = tex->data;
tex->bpp = 24;
bytes = pixels * tex->bpp;
BITMAP_HEADER bmpHeader;
BITMAP_INFO bmpInfo;
BITMAP_QUAD* bmpPallette = NULL;
uint32 palletteEntries = 0;
fread(&bmpHeader, sizeof(bmpHeader), 1, f);
fread(&bmpInfo, sizeof(bmpInfo), 1, f);
if(bmpInfo.width < 0)
{
//This needs to be abstracted somehow
#ifdef WIN32
MessageBox(NULL, "Image width is negative", "ERROR", MB_OK);
#endif
fclose(f);
return NULL;
}
if(bmpInfo.width % 4 != 0)
{
//This needs to be abstracted somehow
#ifdef WIN32
MessageBox(NULL, "Image width must be a multiple of 8", "ERROR", MB_OK);
#endif
fclose(f);
return NULL;
}
if(bmpInfo.height < 0)
{
//This needs to be abstracted somehow
#ifdef WIN32
MessageBox(NULL, "Image height is negative", "ERROR", MB_OK);
#endif
fclose(f);
return NULL;
}
if(bmpInfo.height % 4 != 0)
{
//This needs to be abstracted somehow
#ifdef WIN32
MessageBox(NULL, "Image height must be a multiple of 8", "ERROR", MB_OK);
#endif
fclose(f);
return NULL;
}
if((bmpInfo.bitCount != 8 && bmpInfo.bitCount != 24) || bmpInfo.compression != 0)
{
//This needs to be abstracted somehow
#ifdef WIN32
MessageBox(NULL, "Only 8 and 24 bit uncompressed windows bmp files are currently supported", "ERROR", MB_OK);
#endif
fclose(f);
return NULL;
}
//Allocate memory for a TextureImage structure
TextureImage* tex = new TextureImage;
tex->sizeX = bmpInfo.width;
tex->sizeY = bmpInfo.height;
if(bmpInfo.bitCount >= 8)
{
tex->bpp = bmpInfo.bitCount >> 3;
}
tex->type = GL_RGB;
uint32 pixels = tex->sizeX * tex->sizeY;
uint32 bytes = pixels * tex->bpp;
tex->data = new uint8[bytes];
uint32 i;
uint32 i2;
for(i=0; i<pixels; i++)
if(bmpInfo.bitCount == 8)
{
i2 = (i << 1) + 1;
//Should make sure image[i] < palletteEntries
tex->data[i2] = bmpPallette[image[i]].red;
tex->data[i2 + 1] = bmpPallette[image[i]].blue;
tex->data[i2 + 2] = bmpPallette[image[i]].green;
//Load the pallette
palletteEntries = bmpInfo.bitCount << 8;
bmpPallette = new BITMAP_QUAD[palletteEntries];
fread(bmpPallette, sizeof(BITMAP_QUAD), palletteEntries, f);
}
delete [] image;
image = NULL;
}
else if(bmpInfo.bitCount == 24)
{
uint32 i;
uint8 t;
for(i=0; i<bytes; i+=3)
fseek(f, bmpHeader.offset, SEEK_SET);
fread(tex->data, bytes, 1, f);
if(bmpInfo.bitCount == 8)
{
t = tex->data[i];
tex->data[i] = tex->data[i+2];
tex->data[i+2] = t;
//Apply the pallette
uint8* image = tex->data;
tex->bpp = 24;
bytes = pixels * tex->bpp;
tex->data = new uint8[bytes];
uint32 i;
uint32 i2;
for(i=0; i<pixels; i++)
{
i2 = (i << 1) + 1;
//Should make sure image[i] < palletteEntries
tex->data[i2] = bmpPallette[image[i]].red;
tex->data[i2 + 1] = bmpPallette[image[i]].blue;
tex->data[i2 + 2] = bmpPallette[image[i]].green;
}
delete [] image;
image = NULL;
}
else if(bmpInfo.bitCount == 24)
{
uint32 i;
uint8 t;
for(i=0; i<bytes; i+=3)
{
t = tex->data[i];
tex->data[i] = tex->data[i+2];
tex->data[i+2] = t;
}
}
return tex;
}
return tex;
return NULL;
}
return NULL;
}
};