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diff --git a/nGenEx/PCX.CPP b/nGenEx/PCX.CPP
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-/* Project nGenEx
- Destroyer Studios LLC
- Copyright © 1997-2004. All Rights Reserved.
-
- SUBSYSTEM: nGenEx.lib
- FILE: PCX.cpp
- AUTHOR: John DiCamillo
-
-
- OVERVIEW
- ========
- PCX image file loader
-*/
-
-
-#include "MemDebug.h"
-#include "PCX.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-// +--------------------------------------------------------------------+
-
-#define MAX_SIZE (4*1024*1024)
-
-enum { BYTEMODE, RUNMODE };
-
-// +--------------------------------------------------------------------+
-
-PcxImage::PcxImage()
-: width(0), height(0), bitmap(0), himap(0), imagebytes(0)
-{ }
-
-PcxImage::PcxImage(short w, short h, unsigned char* bits, unsigned char* colors)
-: bitmap(0), himap(0)
-{
- hdr.manufacturer = 10; // Always set to 10
- hdr.version = 5; // Always 5 for 256-color files
- hdr.encoding = 1; // Always set to 1
- hdr.bits_per_pixel = 8; // Should be 8 for 256-color files
- hdr.xmin = 0;
- hdr.xmax = w-1;
- hdr.ymin = 0;
- hdr.ymax = h-1;
- hdr.hres = 0x48;
- hdr.vres = 0x48;
-
- hdr.palette16[ 0] = (unsigned char) 0x00;
- hdr.palette16[ 1] = (unsigned char) 0x00;
- hdr.palette16[ 2] = (unsigned char) 0x00;
- hdr.palette16[ 3] = (unsigned char) 0x80;
- hdr.palette16[ 4] = (unsigned char) 0x00;
- hdr.palette16[ 5] = (unsigned char) 0x00;
- hdr.palette16[ 6] = (unsigned char) 0x00;
- hdr.palette16[ 7] = (unsigned char) 0x80;
- hdr.palette16[ 8] = (unsigned char) 0x00;
- hdr.palette16[ 9] = (unsigned char) 0x80;
- hdr.palette16[10] = (unsigned char) 0x80;
- hdr.palette16[11] = (unsigned char) 0x00;
- hdr.palette16[12] = (unsigned char) 0x00;
- hdr.palette16[13] = (unsigned char) 0x00;
- hdr.palette16[14] = (unsigned char) 0x80;
- hdr.palette16[15] = (unsigned char) 0x80;
-
- hdr.palette16[16] = (unsigned char) 0x00;
- hdr.palette16[17] = (unsigned char) 0x80;
- hdr.palette16[18] = (unsigned char) 0x00;
- hdr.palette16[19] = (unsigned char) 0x80;
- hdr.palette16[20] = (unsigned char) 0x80;
- hdr.palette16[21] = (unsigned char) 0xC0;
- hdr.palette16[22] = (unsigned char) 0xC0;
- hdr.palette16[23] = (unsigned char) 0xC0;
- hdr.palette16[24] = (unsigned char) 0xC0;
- hdr.palette16[25] = (unsigned char) 0xDC;
- hdr.palette16[26] = (unsigned char) 0xC0;
- hdr.palette16[27] = (unsigned char) 0xA6;
- hdr.palette16[28] = (unsigned char) 0xCA;
- hdr.palette16[29] = (unsigned char) 0xF0;
- hdr.palette16[30] = (unsigned char) 0x33;
- hdr.palette16[31] = (unsigned char) 0x2B;
-
- hdr.palette16[32] = (unsigned char) 0x1F;
- hdr.palette16[33] = (unsigned char) 0x2B;
- hdr.palette16[34] = (unsigned char) 0x23;
- hdr.palette16[35] = (unsigned char) 0x1B;
- hdr.palette16[36] = (unsigned char) 0x5F;
- hdr.palette16[37] = (unsigned char) 0x5F;
- hdr.palette16[38] = (unsigned char) 0x5F;
- hdr.palette16[39] = (unsigned char) 0x2F;
- hdr.palette16[40] = (unsigned char) 0x2F;
- hdr.palette16[41] = (unsigned char) 0x2F;
- hdr.palette16[42] = (unsigned char) 0x27;
- hdr.palette16[43] = (unsigned char) 0x27;
- hdr.palette16[44] = (unsigned char) 0x27;
- hdr.palette16[45] = (unsigned char) 0x1F;
- hdr.palette16[46] = (unsigned char) 0x1F;
- hdr.palette16[47] = (unsigned char) 0x1F;
-
- hdr.reserved = 0; // Reserved for future use
- hdr.color_planes = 1; // Color planes
- hdr.bytes_per_line = w; // Number of bytes in 1 line of pixels
- hdr.palette_type = 1; // Should be 1 for color palette
-
- for (unsigned int i = 0; i < 58; i++)
- hdr.filler[i] = 0;
-
- width = w;
- height = h;
- imagebytes = width * height;
-
- bitmap = new(__FILE__,__LINE__) unsigned char [imagebytes];
-
- if (bitmap) {
- for (unsigned long i = 0; i < imagebytes; i++)
- bitmap[i] = bits[i];
-
- unsigned char* p = pal;
- for (int i = 0; i < 256; i++) {
- *p++ = *colors++;
- *p++ = *colors++;
- *p++ = *colors++;
- colors++;
- }
- }
-}
-
-PcxImage::PcxImage(short w, short h, unsigned long* hibits)
-: bitmap(0), himap(0)
-{
- hdr.manufacturer = 10; // Always set to 10
- hdr.version = 5; // Always 5 for true color files
- hdr.encoding = 1; // Always set to 1
- hdr.bits_per_pixel = 8; // Should be 8 for true color files
- hdr.xmin = 0;
- hdr.xmax = w-1;
- hdr.ymin = 0;
- hdr.ymax = h-1;
- hdr.hres = 0x48;
- hdr.vres = 0x48;
-
- hdr.palette16[ 0] = (unsigned char) 0x00;
- hdr.palette16[ 1] = (unsigned char) 0x00;
- hdr.palette16[ 2] = (unsigned char) 0x00;
- hdr.palette16[ 3] = (unsigned char) 0x80;
- hdr.palette16[ 4] = (unsigned char) 0x00;
- hdr.palette16[ 5] = (unsigned char) 0x00;
- hdr.palette16[ 6] = (unsigned char) 0x00;
- hdr.palette16[ 7] = (unsigned char) 0x80;
- hdr.palette16[ 8] = (unsigned char) 0x00;
- hdr.palette16[ 9] = (unsigned char) 0x80;
- hdr.palette16[10] = (unsigned char) 0x80;
- hdr.palette16[11] = (unsigned char) 0x00;
- hdr.palette16[12] = (unsigned char) 0x00;
- hdr.palette16[13] = (unsigned char) 0x00;
- hdr.palette16[14] = (unsigned char) 0x80;
- hdr.palette16[15] = (unsigned char) 0x80;
-
- hdr.palette16[16] = (unsigned char) 0x00;
- hdr.palette16[17] = (unsigned char) 0x80;
- hdr.palette16[18] = (unsigned char) 0x00;
- hdr.palette16[19] = (unsigned char) 0x80;
- hdr.palette16[20] = (unsigned char) 0x80;
- hdr.palette16[21] = (unsigned char) 0xC0;
- hdr.palette16[22] = (unsigned char) 0xC0;
- hdr.palette16[23] = (unsigned char) 0xC0;
- hdr.palette16[24] = (unsigned char) 0xC0;
- hdr.palette16[25] = (unsigned char) 0xDC;
- hdr.palette16[26] = (unsigned char) 0xC0;
- hdr.palette16[27] = (unsigned char) 0xA6;
- hdr.palette16[28] = (unsigned char) 0xCA;
- hdr.palette16[29] = (unsigned char) 0xF0;
- hdr.palette16[30] = (unsigned char) 0x33;
- hdr.palette16[31] = (unsigned char) 0x2B;
-
- hdr.palette16[32] = (unsigned char) 0x1F;
- hdr.palette16[33] = (unsigned char) 0x2B;
- hdr.palette16[34] = (unsigned char) 0x23;
- hdr.palette16[35] = (unsigned char) 0x1B;
- hdr.palette16[36] = (unsigned char) 0x5F;
- hdr.palette16[37] = (unsigned char) 0x5F;
- hdr.palette16[38] = (unsigned char) 0x5F;
- hdr.palette16[39] = (unsigned char) 0x2F;
- hdr.palette16[40] = (unsigned char) 0x2F;
- hdr.palette16[41] = (unsigned char) 0x2F;
- hdr.palette16[42] = (unsigned char) 0x27;
- hdr.palette16[43] = (unsigned char) 0x27;
- hdr.palette16[44] = (unsigned char) 0x27;
- hdr.palette16[45] = (unsigned char) 0x1F;
- hdr.palette16[46] = (unsigned char) 0x1F;
- hdr.palette16[47] = (unsigned char) 0x1F;
-
- hdr.reserved = 0; // Reserved for future use
- hdr.color_planes = 3; // Color planes
- hdr.bytes_per_line = w; // Number of bytes in 1 line of pixels
- hdr.palette_type = 1; // Should be 1 for color palette
-
- for (unsigned int i = 0; i < 58; i++)
- hdr.filler[i] = 0;
-
- width = w;
- height = h;
- imagebytes = width * height;
-
- himap = new(__FILE__,__LINE__) unsigned long [imagebytes];
-
- if (himap) {
- for (unsigned long i = 0; i < imagebytes; i++)
- himap[i] = hibits[i];
- }
-}
-
-PcxImage::~PcxImage()
-{
- delete [] bitmap;
- delete [] himap;
-}
-
-// +--------------------------------------------------------------------+
-
-int PcxImage::Load(char *filename)
-{
- unsigned long i;
- short mode=BYTEMODE, bytecount;
- unsigned char abyte, *p;
- FILE *f;
-
- fopen_s(&f, filename,"rb");
- if (f == NULL)
- return PCX_NOFILE;
-
- fread(&hdr, sizeof(PcxHeader), 1, f);
-
- // read 256 color PCX file
- if (hdr.color_planes == 1) {
- width = 1 + hdr.xmax - hdr.xmin;
- height = 1 + hdr.ymax - hdr.ymin;
- imagebytes = width * height;
-
- if (imagebytes > MAX_SIZE)
- return PCX_TOOBIG;
-
- // get palette from pcx file
- fseek(f,-768L,SEEK_END);
- fread(pal,768,1,f);
-
- // now go back and read the pixel data:
- fseek(f,sizeof(PcxHeader),SEEK_SET);
-
- delete [] himap; himap = 0;
- delete [] bitmap; bitmap = 0;
-
- himap = new(__FILE__,__LINE__) unsigned long [imagebytes];
- if (himap == NULL)
- return PCX_NOMEM;
-
- // force alpha channel to 255
- memset(himap, 0xff, imagebytes*4);
-
- unsigned long* pix = himap;
- for (i=0; i<imagebytes; i++) {
- if (mode == BYTEMODE) {
- abyte = fgetc(f);
-
- if (abyte > 0xbf) {
- bytecount = abyte & 0x3f;
- abyte = fgetc(f);
- if (--bytecount > 0)
- mode = RUNMODE;
- }
- }
- else if (--bytecount == 0) {
- mode = BYTEMODE;
- }
-
- *pix++ = 0xff000000 | (pal[3*abyte] << 16) | (pal[3*abyte+1] << 8) | (pal[3*abyte+2]);
- }
- }
-
- // read 24-bit (true COLOR) PCX file
- else {
- width = 1 + hdr.xmax - hdr.xmin;
- height = 1 + hdr.ymax - hdr.ymin;
- imagebytes = width * height;
-
- if (imagebytes > MAX_SIZE)
- return PCX_TOOBIG;
-
- delete [] himap; himap = 0;
- delete [] bitmap; bitmap = 0;
-
- himap = new(__FILE__,__LINE__) unsigned long [imagebytes];
- if (himap == NULL)
- return PCX_NOMEM;
-
- // force alpha channel to 255
- memset(himap, 0xff, imagebytes*4);
-
- for (int row = 0; row < height; row++) {
- // RED, GREEN, BLUE
- for (int plane = 2; plane >= 0; plane--) {
- p = ((unsigned char*) himap) + width*row*4 + plane;
- for (int col = 0; col < width; col++) {
- if (mode == BYTEMODE) {
- abyte = fgetc(f);
-
- if (abyte > 0xbf) {
- bytecount = abyte & 0x3f;
- abyte = fgetc(f);
- if (--bytecount > 0)
- mode = RUNMODE;
- }
- }
- else if (--bytecount == 0) {
- mode = BYTEMODE;
- }
-
- *p = abyte;
- p += 4;
- }
- }
- }
- }
-
- fclose(f);
- return PCX_OK;
-}
-
-// +--------------------------------------------------------------------+
-
-int PcxImage::LoadBuffer(unsigned char* buf, int len)
-{
- unsigned long i;
- short mode=BYTEMODE, bytecount;
- unsigned char abyte, *p;
- unsigned char* fp;
-
- if (buf == NULL)
- return PCX_NOFILE;
-
- fp = buf;
- memcpy(&hdr, buf, sizeof(PcxHeader));
- fp += sizeof(PcxHeader);
-
- // read 256 color PCX file
- if (hdr.color_planes == 1) {
- width = 1 + hdr.xmax - hdr.xmin;
- height = 1 + hdr.ymax - hdr.ymin;
- imagebytes = width * height;
-
- if (imagebytes > MAX_SIZE)
- return PCX_TOOBIG;
-
- // get palette from end of pcx file
- memcpy(pal,buf+len-768,768);
-
- delete [] himap; himap = 0;
- delete [] bitmap; bitmap = 0;
-
- himap = new(__FILE__,__LINE__) unsigned long [imagebytes];
- if (himap == NULL)
- return PCX_NOMEM;
-
- memset(himap, 0, imagebytes*4);
-
- unsigned long* pix = himap;
- for (i=0; i<imagebytes; i++) {
- if (mode == BYTEMODE) {
- abyte = *fp++;
-
- if (abyte > 0xbf) {
- bytecount = abyte & 0x3f;
- abyte = *fp++;
- if (--bytecount > 0)
- mode = RUNMODE;
- }
- }
- else if (--bytecount == 0) {
- mode = BYTEMODE;
- }
-
- *pix++ = 0xff000000 | (pal[3*abyte] << 16) | (pal[3*abyte+1] << 8) | (pal[3*abyte+2]);
- }
- }
-
- // read 24-bit (true COLOR) PCX file
- else {
- width = 1 + hdr.xmax - hdr.xmin;
- height = 1 + hdr.ymax - hdr.ymin;
- imagebytes = width * height;
-
- if (imagebytes > MAX_SIZE)
- return PCX_TOOBIG;
-
- delete [] himap; himap = 0;
- delete [] bitmap; bitmap = 0;
-
- himap = new(__FILE__,__LINE__) unsigned long [imagebytes];
- if (himap == NULL)
- return PCX_NOMEM;
-
- memset(himap, 0, imagebytes*4);
-
- for (int row = 0; row < height; row++) {
- // RED, GREEN, BLUE
- for (int plane = 2; plane >= 0; plane--) {
- p = ((unsigned char*) himap) + width*row*4 + plane;
- for (int col = 0; col < width; col++) {
- if (mode == BYTEMODE) {
- abyte = *fp++;
-
- if (abyte > 0xbf) {
- bytecount = abyte & 0x3f;
- abyte = *fp++;
- if (--bytecount > 0)
- mode = RUNMODE;
- }
- }
- else if (--bytecount == 0) {
- mode = BYTEMODE;
- }
-
- *p = abyte;
- p += 4;
- }
- }
- }
- }
-
- return PCX_OK;
-}
-
-// +--------------------------------------------------------------------+
-
-int PcxImage::Save(char *filename)
-{
- short mode=BYTEMODE;
- FILE *f;
-
- fopen_s(&f, filename,"wb");
- if (f == NULL)
- return PCX_NOFILE;
-
- fwrite(&hdr, sizeof(PcxHeader), 1, f);
-
- if (hdr.color_planes == 1) {
- unsigned char *p = bitmap;
- unsigned long total = imagebytes;
- unsigned long row = 0;
- unsigned char palette_marker = 12;
-
- while (total) {
- unsigned char* start = p;
- unsigned char count = 0;
-
- while (*start == *p && count < 0x3f && row < width) {
- p++;
- count++;
- row++;
- }
-
- if (count > 1 || *start > 0xbf) {
- unsigned char b[2];
- b[0] = 0xc0 | count;
- b[1] = *start;
- fwrite(b, 2, 1, f);
- }
- else {
- fwrite(start, 1, 1, f);
- }
-
- total -= count;
-
- if (row == width)
- row = 0;
- }
-
- fwrite(&palette_marker,1,1,f);
- fwrite(pal,768,1,f);
- }
-
- // write 24-bit (TRUE COLOR) PCX file
- else {
- for (int row = 0; row < height; row++) {
- for (int plane = 2; plane >= 0; plane--) {
- unsigned long col = 0;
- unsigned char* p = ((unsigned char*) himap) + width*row*4 + plane;
-
- while (col < width) {
- unsigned char* start = p;
- unsigned char count = 0;
-
- while (*start == *p && count < 0x3f && col < width) {
- p += 4;
- count++;
- col++;
- }
-
- if (count > 1 || *start > 0xbf) {
- unsigned char b[2];
- b[0] = 0xc0 | count;
- b[1] = *start;
- fwrite(b, 2, 1, f);
- }
- else {
- fwrite(start, 1, 1, f);
- }
- }
- }
- }
- }
-
- fclose(f);
- return PCX_OK; // return success
-}
-
generated by cgit v1.1 at 2024-11-10 20:41:14 +0000