558 lines
13 KiB
C++
558 lines
13 KiB
C++
#include "toollib.h"
|
|
#include "piclib.h"
|
|
|
|
byte_t* g_tgabuffer;
|
|
byte_t* g_tgabuffptr;
|
|
|
|
/*****************************************************************************
|
|
TL_LoadPCX
|
|
|
|
*****************************************************************************/
|
|
void TL_LoadPCX(char* filename, byte_t** pic, byte_t** palette, int* width, int* height)
|
|
{
|
|
byte_t* raw;
|
|
pcx_t* pcx;
|
|
int x;
|
|
int y;
|
|
int len;
|
|
int databyte;
|
|
int runlength;
|
|
byte_t* out;
|
|
byte_t* pix;
|
|
|
|
// load the file
|
|
len = TL_LoadFile(filename,(void **)&raw);
|
|
|
|
// parse the PCX file
|
|
pcx = (pcx_t*)raw;
|
|
raw = &pcx->data;
|
|
|
|
pcx->xmin = TL_LittleShort(pcx->xmin);
|
|
pcx->ymin = TL_LittleShort(pcx->ymin);
|
|
pcx->xmax = TL_LittleShort(pcx->xmax);
|
|
pcx->ymax = TL_LittleShort(pcx->ymax);
|
|
pcx->hres = TL_LittleShort(pcx->hres);
|
|
pcx->vres = TL_LittleShort(pcx->vres);
|
|
pcx->bytes_per_line = TL_LittleShort(pcx->bytes_per_line);
|
|
pcx->palette_type = TL_LittleShort(pcx->palette_type);
|
|
|
|
if (pcx->manufacturer != 0x0a ||
|
|
pcx->version != 5 ||
|
|
pcx->encoding != 1 ||
|
|
pcx->bits_per_pixel != 8 ||
|
|
pcx->xmax >= 640 ||
|
|
pcx->ymax >= 480)
|
|
TL_Error("Bad pcx file %s",filename);
|
|
|
|
if (palette)
|
|
{
|
|
*palette = (byte_t*)TL_Malloc(768);
|
|
memcpy(*palette,(byte_t*)pcx + len - 768,768);
|
|
}
|
|
|
|
if (width)
|
|
*width = pcx->xmax+1;
|
|
|
|
if (height)
|
|
*height = pcx->ymax+1;
|
|
|
|
if (!pic)
|
|
return;
|
|
|
|
out = (byte_t*)TL_Malloc((pcx->ymax+1)*(pcx->xmax+1));
|
|
*pic = out;
|
|
pix = out;
|
|
|
|
for (y=0; y<=pcx->ymax; y++, pix += pcx->xmax+1)
|
|
{
|
|
for (x=0; x<=pcx->xmax; )
|
|
{
|
|
databyte = *raw++;
|
|
|
|
if((databyte & 0xC0) == 0xC0)
|
|
{
|
|
runlength = databyte & 0x3F;
|
|
databyte = *raw++;
|
|
}
|
|
else
|
|
runlength = 1;
|
|
|
|
while (runlength-- > 0)
|
|
pix[x++] = databyte;
|
|
}
|
|
}
|
|
|
|
if (raw - (byte_t *)pcx > len)
|
|
TL_Error("PCX file %s was malformed",filename);
|
|
|
|
TL_Free(pcx);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
TL_SavePCX
|
|
|
|
*****************************************************************************/
|
|
void TL_SavePCX(char* filename, byte_t* data, int width, int height, byte_t* palette)
|
|
{
|
|
int i;
|
|
int j;
|
|
int length;
|
|
pcx_t* pcx;
|
|
byte_t* pack;
|
|
|
|
pcx = (pcx_t*)TL_Malloc(width*height*2+1000);
|
|
|
|
pcx->manufacturer = 0x0A; // PCX id
|
|
pcx->version = 5; // 256 color
|
|
pcx->encoding = 1; // uncompressed
|
|
pcx->bits_per_pixel = 8; // 256 color
|
|
pcx->xmin = 0;
|
|
pcx->ymin = 0;
|
|
pcx->xmax = TL_LittleShort((short)(width-1));
|
|
pcx->ymax = TL_LittleShort((short)(height-1));
|
|
pcx->hres = TL_LittleShort((short)width);
|
|
pcx->vres = TL_LittleShort((short)height);
|
|
pcx->color_planes = 1; // chunky image
|
|
pcx->bytes_per_line = TL_LittleShort((short)width);
|
|
pcx->palette_type = TL_LittleShort(2); // not a grey scale
|
|
|
|
// pack the image
|
|
pack = &pcx->data;
|
|
|
|
for (i=0; i<height; i++)
|
|
{
|
|
for (j=0; j<width; j++)
|
|
{
|
|
if ((*data & 0xc0) != 0xC0)
|
|
*pack++ = *data++;
|
|
else
|
|
{
|
|
*pack++ = 0xC1;
|
|
*pack++ = *data++;
|
|
}
|
|
}
|
|
}
|
|
|
|
// write the palette
|
|
*pack++ = 0x0C;
|
|
for (i=0; i<768; i++)
|
|
*pack++ = *palette++;
|
|
|
|
// write output file
|
|
length = pack - (byte_t*)pcx;
|
|
TL_SaveFile(filename,pcx,length);
|
|
|
|
TL_Free(pcx);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
TGA_GetByte
|
|
|
|
*****************************************************************************/
|
|
byte_t TGA_GetByte(void)
|
|
{
|
|
return (*g_tgabuffptr++);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
TGA_GetShort
|
|
|
|
*****************************************************************************/
|
|
short TGA_GetShort(void)
|
|
{
|
|
byte_t msb;
|
|
byte_t lsb;
|
|
|
|
lsb = g_tgabuffptr[0];
|
|
msb = g_tgabuffptr[1];
|
|
|
|
g_tgabuffptr += 2;
|
|
|
|
return ((msb<<8)|lsb);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
TL_LoadTGA
|
|
|
|
*****************************************************************************/
|
|
void TL_LoadTGA(char* name, byte_t** pixels, int* width, int* height)
|
|
{
|
|
int columns;
|
|
int rows;
|
|
int numPixels;
|
|
byte_t* pixbuf;
|
|
int row;
|
|
int column;
|
|
byte_t* targa_rgba;
|
|
tga_t targa_header;
|
|
byte_t red;
|
|
byte_t green;
|
|
byte_t blue;
|
|
byte_t alphabyte;
|
|
byte_t packetHeader;
|
|
byte_t packetSize;
|
|
byte_t j;
|
|
|
|
TL_LoadFile(name,(void**)&g_tgabuffer);
|
|
g_tgabuffptr = g_tgabuffer;
|
|
|
|
/* load unaligned tga data */
|
|
targa_header.id_length = TGA_GetByte();
|
|
targa_header.colormap_type = TGA_GetByte();
|
|
targa_header.image_type = TGA_GetByte();
|
|
targa_header.colormap_index = TGA_GetShort();
|
|
targa_header.colormap_length = TGA_GetShort();
|
|
targa_header.colormap_size = TGA_GetByte();
|
|
targa_header.x_origin = TGA_GetShort();
|
|
targa_header.y_origin = TGA_GetShort();
|
|
targa_header.width = TGA_GetShort();
|
|
targa_header.height = TGA_GetShort();
|
|
targa_header.pixel_size = TGA_GetByte();
|
|
targa_header.attributes = TGA_GetByte();
|
|
|
|
if (targa_header.image_type != 2 && targa_header.image_type != 10)
|
|
TL_Error("TL_LoadTGA: %s - Only type 2 and 10 targa RGB images supported",name);
|
|
|
|
if ((targa_header.colormap_type != 0) || (targa_header.pixel_size != 32 && targa_header.pixel_size != 24))
|
|
TL_Error("TL_LoadTGA: %s - Only 32 or 24 bit images supported (no colormaps)",name);
|
|
|
|
columns = targa_header.width;
|
|
rows = targa_header.height;
|
|
numPixels = columns * rows;
|
|
|
|
if (width)
|
|
*width = columns;
|
|
if (height)
|
|
*height = rows;
|
|
|
|
targa_rgba = (byte_t*)TL_Malloc(numPixels*4);
|
|
*pixels = targa_rgba;
|
|
|
|
if (targa_header.id_length != 0)
|
|
{
|
|
// skip TARGA image comment
|
|
g_tgabuffptr += targa_header.id_length;
|
|
}
|
|
|
|
if (targa_header.image_type==2)
|
|
{
|
|
// Uncompressed, RGB images
|
|
for (row=rows-1; row>=0; row--)
|
|
{
|
|
pixbuf = targa_rgba + row*columns*4;
|
|
for(column=0; column<columns; column++)
|
|
{
|
|
switch (targa_header.pixel_size)
|
|
{
|
|
case 24:
|
|
blue = TGA_GetByte();
|
|
green = TGA_GetByte();
|
|
red = TGA_GetByte();
|
|
alphabyte = 255;
|
|
break;
|
|
|
|
case 32:
|
|
blue = TGA_GetByte();
|
|
green = TGA_GetByte();
|
|
red = TGA_GetByte();
|
|
alphabyte = TGA_GetByte();
|
|
break;
|
|
}
|
|
|
|
*pixbuf++ = red;
|
|
*pixbuf++ = green;
|
|
*pixbuf++ = blue;
|
|
*pixbuf++ = alphabyte;
|
|
|
|
}
|
|
}
|
|
}
|
|
else if (targa_header.image_type==10)
|
|
{
|
|
// Runlength encoded RGB images
|
|
for (row=rows-1; row>=0; row--)
|
|
{
|
|
pixbuf = targa_rgba + row*columns*4;
|
|
for(column=0; column<columns; )
|
|
{
|
|
packetHeader = TGA_GetByte();
|
|
packetSize = 1 + (packetHeader & 0x7f);
|
|
if (packetHeader & 0x80)
|
|
{
|
|
// run-length packet
|
|
switch (targa_header.pixel_size)
|
|
{
|
|
case 24:
|
|
blue = TGA_GetByte();
|
|
green = TGA_GetByte();
|
|
red = TGA_GetByte();
|
|
alphabyte = 255;
|
|
break;
|
|
|
|
case 32:
|
|
blue = TGA_GetByte();
|
|
green = TGA_GetByte();
|
|
red = TGA_GetByte();
|
|
alphabyte = TGA_GetByte();
|
|
break;
|
|
}
|
|
|
|
for(j=0; j<packetSize; j++)
|
|
{
|
|
*pixbuf++ = red;
|
|
*pixbuf++ = green;
|
|
*pixbuf++ = blue;
|
|
*pixbuf++ = alphabyte;
|
|
column++;
|
|
|
|
if (column==columns)
|
|
{
|
|
// run spans across rows
|
|
column=0;
|
|
if (row>0)
|
|
row--;
|
|
else
|
|
goto breakOut;
|
|
pixbuf = targa_rgba + row*columns*4;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// non run-length packet
|
|
for(j=0; j<packetSize; j++)
|
|
{
|
|
switch (targa_header.pixel_size)
|
|
{
|
|
case 24:
|
|
blue = TGA_GetByte();
|
|
green = TGA_GetByte();
|
|
red = TGA_GetByte();
|
|
alphabyte = 255;
|
|
break;
|
|
|
|
case 32:
|
|
blue = TGA_GetByte();
|
|
green = TGA_GetByte();
|
|
red = TGA_GetByte();
|
|
alphabyte = TGA_GetByte();
|
|
break;
|
|
}
|
|
|
|
*pixbuf++ = red;
|
|
*pixbuf++ = green;
|
|
*pixbuf++ = blue;
|
|
*pixbuf++ = alphabyte;
|
|
column++;
|
|
|
|
if (column == columns)
|
|
{
|
|
// pixel packet run spans across rows
|
|
column=0;
|
|
if (row>0)
|
|
row--;
|
|
else
|
|
goto breakOut;
|
|
pixbuf = targa_rgba + row*columns*4;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
breakOut:;
|
|
}
|
|
}
|
|
|
|
TL_Free(g_tgabuffer);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
TL_SaveTGA
|
|
|
|
Saves TGA. Supports r/w 16/24/32 bpp.
|
|
*****************************************************************************/
|
|
void TL_SaveTGA(char* filename, byte_t* pixels, int width, int height, int sbpp, int tbpp)
|
|
{
|
|
int handle;
|
|
tga_t tga;
|
|
unsigned short rgba5551;
|
|
unsigned long rgba8888;
|
|
int r;
|
|
int g;
|
|
int b;
|
|
int x;
|
|
int y;
|
|
int a;
|
|
byte_t* tgabuffer;
|
|
byte_t* tgabufferptr;
|
|
byte_t* rawbufferptr;
|
|
byte_t* tempbuffer;
|
|
byte_t* tempbufferptr;
|
|
int bytesperpixel;
|
|
|
|
// all source is upsampled into easy 32 bit rgba8888
|
|
// and downsampled into tga buffer
|
|
tempbuffer = (byte_t*)TL_Malloc(width*height*4);
|
|
|
|
if (sbpp == 16)
|
|
{
|
|
/* source is 16 bit rgba */
|
|
rawbufferptr = pixels;
|
|
for (y=0; y<height; y++)
|
|
{
|
|
tempbufferptr = tempbuffer + y*width*4;
|
|
for (x=0; x<width; x++)
|
|
{
|
|
rgba5551 = *(unsigned short*)rawbufferptr;
|
|
r = (rgba5551 & 0xF800)>>11;
|
|
g = (rgba5551 & 0x07C0)>>6;
|
|
b = (rgba5551 & 0x003E)>>1;
|
|
a = (rgba5551 & 0x01);
|
|
tempbufferptr[0] = (byte_t)(b * (255.0/31.0));
|
|
tempbufferptr[1] = (byte_t)(g * (255.0/31.0));
|
|
tempbufferptr[2] = (byte_t)(r * (255.0/31.0));
|
|
tempbufferptr[3] = (byte_t)(a * 255.0);
|
|
|
|
rawbufferptr += sizeof(unsigned short);
|
|
tempbufferptr += 4;
|
|
}
|
|
}
|
|
}
|
|
else if (sbpp == 24)
|
|
{
|
|
/* source is 24 bit rgba */
|
|
rawbufferptr = pixels;
|
|
for (y=0; y<height; y++)
|
|
{
|
|
tempbufferptr = tempbuffer + y*width*4;
|
|
for (x=0; x<width; x++)
|
|
{
|
|
tempbufferptr[0] = rawbufferptr[0];
|
|
tempbufferptr[1] = rawbufferptr[1];
|
|
tempbufferptr[2] = rawbufferptr[2];
|
|
tempbufferptr[3] = 255;
|
|
|
|
rawbufferptr += 3;
|
|
tempbufferptr += 4;
|
|
}
|
|
}
|
|
}
|
|
else if (sbpp == 32)
|
|
{
|
|
/* source is 32 bit rgba */
|
|
memcpy(tempbuffer,pixels,width*height*4);
|
|
}
|
|
else
|
|
TL_Error("TL_SaveTGA: cannot handle source %d bits per pixel",sbpp);
|
|
|
|
if (tbpp == 16)
|
|
bytesperpixel = 2;
|
|
else if (tbpp == 24)
|
|
bytesperpixel = 3;
|
|
else if (tbpp == 32)
|
|
bytesperpixel = 4;
|
|
else
|
|
TL_Error("TL_SaveTGA: cannot handle target %d bits per pixel",tbpp);
|
|
|
|
handle = TL_SafeOpenWrite(filename);
|
|
|
|
/* write the targa header */
|
|
tga.id_length = 0;
|
|
tga.colormap_type = 0;
|
|
tga.image_type = 2;
|
|
tga.colormap_index = 0;
|
|
tga.colormap_length = 0;
|
|
tga.colormap_size = 0;
|
|
tga.x_origin = 0;
|
|
tga.y_origin = 0;
|
|
tga.width = width;
|
|
tga.height = height;
|
|
tga.pixel_size = tbpp;
|
|
tga.attributes = 0;
|
|
|
|
TL_SafeWrite(handle,&tga.id_length,sizeof(tga.id_length));
|
|
TL_SafeWrite(handle,&tga.colormap_type,sizeof(tga.colormap_type));
|
|
TL_SafeWrite(handle,&tga.image_type,sizeof(tga.image_type));
|
|
TL_SafeWrite(handle,&tga.colormap_index,sizeof(tga.colormap_index));
|
|
TL_SafeWrite(handle,&tga.colormap_length,sizeof(tga.colormap_length));
|
|
TL_SafeWrite(handle,&tga.colormap_size,sizeof(tga.colormap_size));
|
|
TL_SafeWrite(handle,&tga.x_origin,sizeof(tga.x_origin));
|
|
TL_SafeWrite(handle,&tga.y_origin,sizeof(tga.y_origin));
|
|
TL_SafeWrite(handle,&tga.width,sizeof(tga.width));
|
|
TL_SafeWrite(handle,&tga.height,sizeof(tga.height));
|
|
TL_SafeWrite(handle,&tga.pixel_size,sizeof(tga.pixel_size));
|
|
TL_SafeWrite(handle,&tga.attributes,sizeof(tga.attributes));
|
|
|
|
/* tga images are upside down left to right - !@#$% */
|
|
tgabuffer = (byte_t*)TL_Malloc(width*height*bytesperpixel);
|
|
|
|
/* source is 32 bit rgba */
|
|
rawbufferptr = tempbuffer;
|
|
for (y=height-1; y>=0; y--)
|
|
{
|
|
tgabufferptr = tgabuffer + y*width*bytesperpixel;
|
|
for (x=0; x<width; x++)
|
|
{
|
|
switch (bytesperpixel)
|
|
{
|
|
case 2:
|
|
break;
|
|
|
|
case 3:
|
|
rgba8888 = TL_BigLong(*(unsigned long*)rawbufferptr);
|
|
r = (rgba8888 & 0xFF000000)>>24;
|
|
g = (rgba8888 & 0x00FF0000)>>16;
|
|
b = (rgba8888 & 0x0000FF00)>>8;
|
|
|
|
tgabufferptr[0] = b;
|
|
tgabufferptr[1] = g;
|
|
tgabufferptr[2] = r;
|
|
break;
|
|
|
|
case 4:
|
|
rgba8888 = TL_BigLong(*(unsigned long*)rawbufferptr);
|
|
r = (rgba8888 & 0xFF000000)>>24;
|
|
g = (rgba8888 & 0x00FF0000)>>16;
|
|
b = (rgba8888 & 0x0000FF00)>>8;
|
|
a = rgba8888 & 0xFF;
|
|
|
|
tgabufferptr[0] = b;
|
|
tgabufferptr[1] = g;
|
|
tgabufferptr[2] = r;
|
|
tgabufferptr[3] = a;
|
|
break;
|
|
}
|
|
|
|
rawbufferptr += 4;
|
|
tgabufferptr += bytesperpixel;
|
|
}
|
|
}
|
|
|
|
TL_SafeWrite(handle,tgabuffer,width*height*bytesperpixel);
|
|
close(handle);
|
|
|
|
TL_Free(tempbuffer);
|
|
TL_Free(tgabuffer);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
TL_LoadImage
|
|
|
|
Loads an image based on extension.
|
|
*****************************************************************************/
|
|
void TL_LoadImage(char* name, byte_t** pixels, byte_t** palette, int* width, int* height)
|
|
{
|
|
char ext[16];
|
|
|
|
TL_GetExtension(name,ext);
|
|
if (!stricmp(ext,"pcx"))
|
|
TL_LoadPCX(name,pixels,palette,width,height);
|
|
else if (!stricmp(ext,"tga"))
|
|
{
|
|
TL_LoadTGA(name,pixels,width,height);
|
|
*palette = NULL;
|
|
}
|
|
else
|
|
TL_Error("TL_LoadImage: unknown image extension %s",ext);
|
|
}
|
|
|