diff options
Diffstat (limited to 'smelt/sdl/CxImage/ximapcx.cpp')
| -rw-r--r-- | smelt/sdl/CxImage/ximapcx.cpp | 479 |
1 files changed, 0 insertions, 479 deletions
diff --git a/smelt/sdl/CxImage/ximapcx.cpp b/smelt/sdl/CxImage/ximapcx.cpp deleted file mode 100644 index 2fa2f5d..0000000 --- a/smelt/sdl/CxImage/ximapcx.cpp +++ /dev/null @@ -1,479 +0,0 @@ -/*
- * File: ximapcx.cpp
- * Purpose: Platform Independent PCX Image Class Loader and Writer
- * 05/Jan/2002 Davide Pizzolato - www.xdp.it
- * CxImage version 7.0.0 31/Dec/2010
- *
- * based on ppmtopcx.c - convert a portable pixmap to PCX
- * Copyright (C) 1994 by Ingo Wilken (Ingo.Wilken@informatik.uni-oldenburg.de)
- * based on ppmtopcx.c by Michael Davidson
- */
-
-#include "ximapcx.h"
-
-#if CXIMAGE_SUPPORT_PCX
-
-#include "xmemfile.h"
-
-#define PCX_MAGIC 0X0A // PCX magic number
-#define PCX_256_COLORS 0X0C // magic number for 256 colors
-#define PCX_HDR_SIZE 128 // size of PCX header
-#define PCX_MAXCOLORS 256
-#define PCX_MAXPLANES 4
-#define PCX_MAXVAL 255
-
-////////////////////////////////////////////////////////////////////////////////
-#if CXIMAGE_SUPPORT_DECODE
-////////////////////////////////////////////////////////////////////////////////
-bool CxImagePCX::Decode(CxFile *hFile)
-{
- if (hFile == NULL) return false;
-
- PCXHEADER pcxHeader;
- int32_t i, x, y, y2, nbytes, count, Height, Width;
- uint8_t c, ColorMap[PCX_MAXCOLORS][3];
- uint8_t *pcximage = NULL, *lpHead1 = NULL, *lpHead2 = NULL;
- uint8_t *pcxplanes, *pcxpixels;
-
- cx_try
- {
- if (hFile->Read(&pcxHeader,sizeof(PCXHEADER),1)==0) cx_throw("Can't read PCX image");
-
- PCX_toh(&pcxHeader);
-
- if (pcxHeader.Manufacturer != PCX_MAGIC) cx_throw("Error: Not a PCX file");
- // Check for PCX run length encoding
- if (pcxHeader.Encoding != 1) cx_throw("PCX file has unknown encoding scheme");
-
- Width = (pcxHeader.Xmax - pcxHeader.Xmin) + 1;
- Height = (pcxHeader.Ymax - pcxHeader.Ymin) + 1;
- info.xDPI = pcxHeader.Hres;
- info.yDPI = pcxHeader.Vres;
-
- if (info.nEscape == -1){
- head.biWidth = Width;
- head.biHeight= Height;
- info.dwType = CXIMAGE_FORMAT_PCX;
- return true;
- }
-
- // Check that we can handle this image format
- if (pcxHeader.ColorPlanes > 4)
- cx_throw("Can't handle image with more than 4 planes");
-
- // Create the image
- if (pcxHeader.ColorPlanes >= 3 && pcxHeader.BitsPerPixel == 8){
- Create (Width, Height, 24, CXIMAGE_FORMAT_PCX);
-#if CXIMAGE_SUPPORT_ALPHA
- if (pcxHeader.ColorPlanes==4) AlphaCreate();
-#endif //CXIMAGE_SUPPORT_ALPHA
- } else if (pcxHeader.ColorPlanes == 4 && pcxHeader.BitsPerPixel == 1)
- Create (Width, Height, 4, CXIMAGE_FORMAT_PCX);
- else
- Create (Width, Height, pcxHeader.BitsPerPixel, CXIMAGE_FORMAT_PCX);
-
- if (info.nEscape) cx_throw("Cancelled"); // <vho> - cancel decoding
-
- //Read the image and check if it's ok
- nbytes = pcxHeader.BytesPerLine * pcxHeader.ColorPlanes * Height;
- lpHead1 = pcximage = (uint8_t*)malloc(nbytes);
- while (nbytes > 0){
- if (hFile == NULL || hFile->Eof()) cx_throw("corrupted PCX");
-
- hFile->Read(&c,1,1);
- if ((c & 0XC0) != 0XC0){ // Repeated group
- *pcximage++ = c;
- --nbytes;
- continue;
- }
- count = c & 0X3F; // extract count
- hFile->Read(&c,1,1);
- if (count > nbytes) cx_throw("repeat count spans end of image");
-
- nbytes -= count;
- while (--count >=0) *pcximage++ = c;
- }
- pcximage = lpHead1;
-
- //store the palette
- for (i = 0; i < 16; i++){
- ColorMap[i][0] = pcxHeader.ColorMap[i][0];
- ColorMap[i][1] = pcxHeader.ColorMap[i][1];
- ColorMap[i][2] = pcxHeader.ColorMap[i][2];
- }
- if (pcxHeader.BitsPerPixel == 8 && pcxHeader.ColorPlanes == 1){
- hFile->Read(&c,1,1);
- if (c != PCX_256_COLORS) cx_throw("bad color map signature");
-
- for (i = 0; i < PCX_MAXCOLORS; i++){
- hFile->Read(&ColorMap[i][0],1,1);
- hFile->Read(&ColorMap[i][1],1,1);
- hFile->Read(&ColorMap[i][2],1,1);
- }
- }
- if (pcxHeader.BitsPerPixel == 1 && pcxHeader.ColorPlanes == 1){
- ColorMap[0][0] = ColorMap[0][1] = ColorMap[0][2] = 0;
- ColorMap[1][0] = ColorMap[1][1] = ColorMap[1][2] = 255;
- }
-
- for (uint32_t idx=0; idx<head.biClrUsed; idx++) SetPaletteColor((uint8_t)idx,ColorMap[idx][0],ColorMap[idx][1],ColorMap[idx][2]);
-
- lpHead2 = pcxpixels = (uint8_t *)malloc(Width + pcxHeader.BytesPerLine * 8);
- // Convert the image
- for (y = 0; y < Height; y++){
-
- if (info.nEscape) cx_throw("Cancelled"); // <vho> - cancel decoding
-
- y2=Height-1-y;
- pcxpixels = lpHead2;
- pcxplanes = pcximage + (y * pcxHeader.BytesPerLine * pcxHeader.ColorPlanes);
-
- if (pcxHeader.ColorPlanes == 3 && pcxHeader.BitsPerPixel == 8){
- // Deal with 24 bit color image
- for (x = 0; x < Width; x++){
- SetPixelColor(x,y2,RGB(pcxplanes[x],pcxplanes[pcxHeader.BytesPerLine + x],pcxplanes[2*pcxHeader.BytesPerLine + x]));
- }
- continue;
-#if CXIMAGE_SUPPORT_ALPHA
- } else if (pcxHeader.ColorPlanes == 4 && pcxHeader.BitsPerPixel == 8){
- for (x = 0; x < Width; x++){
- SetPixelColor(x,y2,RGB(pcxplanes[x],pcxplanes[pcxHeader.BytesPerLine + x],pcxplanes[2*pcxHeader.BytesPerLine + x]));
- AlphaSet(x,y2,pcxplanes[3*pcxHeader.BytesPerLine + x]);
- }
- continue;
-#endif //CXIMAGE_SUPPORT_ALPHA
- } else if (pcxHeader.ColorPlanes == 1) {
- if (!PCX_UnpackPixels(pcxpixels, pcxplanes, pcxHeader.BytesPerLine, pcxHeader.ColorPlanes, pcxHeader.BitsPerPixel)){
- cx_throw("PCX_UnpackPixels: Can't handle packed pixels with more than 1 plane");
- }
- } else {
- if (!PCX_PlanesToPixels(pcxpixels, pcxplanes, pcxHeader.BytesPerLine, pcxHeader.ColorPlanes, pcxHeader.BitsPerPixel)){
- cx_throw("PCX_PlanesToPixels: more than 4 planes or more than 1 bit per pixel");
- }
- }
- for (x = 0; x < Width; x++) SetPixelIndex(x,y2,pcxpixels[x]);
- }
-
- } cx_catch {
- if (strcmp(message,"")) strncpy(info.szLastError,message,255);
- if (lpHead1){ free(lpHead1); lpHead1 = NULL; }
- if (lpHead2){ free(lpHead2); lpHead2 = NULL; }
- return false;
- }
- if (lpHead1){ free(lpHead1); lpHead1 = NULL; }
- if (lpHead2){ free(lpHead2); lpHead2 = NULL; }
- return true;
-}
-////////////////////////////////////////////////////////////////////////////////
-#endif //CXIMAGE_SUPPORT_DECODE
-////////////////////////////////////////////////////////////////////////////////
-#if CXIMAGE_SUPPORT_ENCODE
-////////////////////////////////////////////////////////////////////////////////
-bool CxImagePCX::Encode(CxFile * hFile)
-{
- if (EncodeSafeCheck(hFile)) return false;
-
- cx_try
- {
- PCXHEADER pcxHeader;
- memset(&pcxHeader,0,sizeof(pcxHeader));
- pcxHeader.Manufacturer = PCX_MAGIC;
- pcxHeader.Version = 5;
- pcxHeader.Encoding = 1;
- pcxHeader.Xmin = 0;
- pcxHeader.Ymin = 0;
- pcxHeader.Xmax = (uint16_t)head.biWidth-1;
- pcxHeader.Ymax = (uint16_t)head.biHeight-1;
- pcxHeader.Hres = (uint16_t)info.xDPI;
- pcxHeader.Vres = (uint16_t)info.yDPI;
- pcxHeader.Reserved = 0;
- pcxHeader.PaletteType = head.biClrUsed==0;
-
- switch(head.biBitCount){
- case 24:
- case 8:
- {
- pcxHeader.BitsPerPixel = 8;
- pcxHeader.ColorPlanes = head.biClrUsed==0 ? 3 : 1;
-#if CXIMAGE_SUPPORT_ALPHA
- if (AlphaIsValid() && head.biClrUsed==0) pcxHeader.ColorPlanes =4;
-#endif //CXIMAGE_SUPPORT_ALPHA
- pcxHeader.BytesPerLine = (uint16_t)head.biWidth;
- break;
- }
- default: //(4 1)
- pcxHeader.BitsPerPixel = 1;
- pcxHeader.ColorPlanes = head.biClrUsed==16 ? 4 : 1;
- pcxHeader.BytesPerLine = (uint16_t)((head.biWidth * pcxHeader.BitsPerPixel + 7)>>3);
- }
-
- if (pcxHeader.BitsPerPixel == 1 && pcxHeader.ColorPlanes == 1){
- pcxHeader.ColorMap[0][0] = pcxHeader.ColorMap[0][1] = pcxHeader.ColorMap[0][2] = 0;
- pcxHeader.ColorMap[1][0] = pcxHeader.ColorMap[1][1] = pcxHeader.ColorMap[1][2] = 255;
- }
- if (pcxHeader.BitsPerPixel == 1 && pcxHeader.ColorPlanes == 4){
- RGBQUAD c;
- for (int32_t i = 0; i < 16; i++){
- c=GetPaletteColor(i);
- pcxHeader.ColorMap[i][0] = c.rgbRed;
- pcxHeader.ColorMap[i][1] = c.rgbGreen;
- pcxHeader.ColorMap[i][2] = c.rgbBlue;
- }
- }
-
- pcxHeader.BytesPerLine = (pcxHeader.BytesPerLine + 1)&(~1);
-
- PCX_toh(&pcxHeader);
- if (hFile->Write(&pcxHeader, sizeof(pcxHeader), 1) == 0 )
- cx_throw("cannot write PCX header");
- PCX_toh(&pcxHeader);
-
- CxMemFile buffer;
- buffer.Open();
-
- uint8_t c,n;
- int32_t x,y;
- if (head.biClrUsed==0){
- for (y = head.biHeight-1; y >=0 ; y--){
- for (int32_t p=0; p<pcxHeader.ColorPlanes; p++){
- c=n=0;
- for (x = 0; x<head.biWidth; x++){
- if (p==0)
- PCX_PackPixels(BlindGetPixelColor(x,y).rgbRed,c,n,buffer);
- else if (p==1)
- PCX_PackPixels(BlindGetPixelColor(x,y).rgbGreen,c,n,buffer);
- else if (p==2)
- PCX_PackPixels(BlindGetPixelColor(x,y).rgbBlue,c,n,buffer);
-#if CXIMAGE_SUPPORT_ALPHA
- else if (p==3)
- PCX_PackPixels(BlindAlphaGet(x,y),c,n,buffer);
-#endif //CXIMAGE_SUPPORT_ALPHA
- }
- PCX_PackPixels(-1-(head.biWidth&0x1),c,n,buffer);
- }
- }
-
- hFile->Write(buffer.GetBuffer(false),buffer.Tell(),1);
-
- } else if (head.biBitCount==8) {
-
- for (y = head.biHeight-1; y >=0 ; y--){
- c=n=0;
- for (x = 0; x<head.biWidth; x++){
- PCX_PackPixels(GetPixelIndex(x,y),c,n,buffer);
- }
- PCX_PackPixels(-1-(head.biWidth&0x1),c,n,buffer);
- }
-
- hFile->Write(buffer.GetBuffer(false),buffer.Tell(),1);
-
- if (head.biBitCount == 8){
- hFile->PutC(0x0C);
- uint8_t* pal = (uint8_t*)malloc(768);
- RGBQUAD c;
- for (int32_t i=0;i<256;i++){
- c=GetPaletteColor(i);
- pal[3*i+0] = c.rgbRed;
- pal[3*i+1] = c.rgbGreen;
- pal[3*i+2] = c.rgbBlue;
- }
- hFile->Write(pal,768,1);
- free(pal);
- }
- } else { //(head.biBitCount==4) || (head.biBitCount==1)
-
- RGBQUAD *rgb = GetPalette();
- bool binvert = false;
- if (CompareColors(&rgb[0],&rgb[1])>0) binvert=(head.biBitCount==1);
-
- uint8_t* plane = (uint8_t*)malloc(pcxHeader.BytesPerLine);
- uint8_t* raw = (uint8_t*)malloc(head.biWidth);
-
- for(y = head.biHeight-1; y >=0 ; y--) {
-
- for( x = 0; x < head.biWidth; x++) raw[x] = (uint8_t)GetPixelIndex(x,y);
-
- if (binvert) for( x = 0; x < head.biWidth; x++) raw[x] = 1-raw[x];
-
- for( x = 0; x < pcxHeader.ColorPlanes; x++ ) {
- PCX_PixelsToPlanes(raw, head.biWidth, plane, x);
- PCX_PackPlanes(plane, pcxHeader.BytesPerLine, buffer);
- }
- }
-
- free(plane);
- free(raw);
-
- hFile->Write(buffer.GetBuffer(false),buffer.Tell(),1);
-
- }
-
- } cx_catch {
- if (strcmp(message,"")) strncpy(info.szLastError,message,255);
- return false;
- }
- return true;
-}
-////////////////////////////////////////////////////////////////////////////////
-#endif // CXIMAGE_SUPPORT_ENCODE
-////////////////////////////////////////////////////////////////////////////////
-// Convert multi-plane format into 1 pixel per byte
-// from unpacked file data bitplanes[] into pixel row pixels[]
-// image Height rows, with each row having planes image planes each
-// bytesperline bytes
-bool CxImagePCX::PCX_PlanesToPixels(uint8_t * pixels, uint8_t * bitplanes, int16_t bytesperline, int16_t planes, int16_t bitsperpixel)
-{
- int32_t i, j, npixels;
- uint8_t * p;
- if (planes > 4) return false;
- if (bitsperpixel != 1) return false;
-
- // Clear the pixel buffer
- npixels = (bytesperline * 8) / bitsperpixel;
- p = pixels;
- while (--npixels >= 0) *p++ = 0;
-
- // Do the format conversion
- for (i = 0; i < planes; i++){
- int32_t pixbit, bits, mask;
- p = pixels;
- pixbit = (1 << i); // pixel bit for this plane
- for (j = 0; j < bytesperline; j++){
- bits = *bitplanes++;
- for (mask = 0X80; mask != 0; mask >>= 1, p++)
- if (bits & mask) *p |= pixbit;
- }
- }
- return true;
-}
-////////////////////////////////////////////////////////////////////////////////
-// convert packed pixel format into 1 pixel per byte
-// from unpacked file data bitplanes[] into pixel row pixels[]
-// image Height rows, with each row having planes image planes each
-// bytesperline bytes
-bool CxImagePCX::PCX_UnpackPixels(uint8_t * pixels, uint8_t * bitplanes, int16_t bytesperline, int16_t planes, int16_t bitsperpixel)
-{
- register int32_t bits;
- if (planes != 1) return false;
-
- if (bitsperpixel == 8){ // 8 bits/pixels, no unpacking needed
- while (bytesperline-- > 0) *pixels++ = *bitplanes++;
- } else if (bitsperpixel == 4){ // 4 bits/pixel, two pixels per byte
- while (bytesperline-- > 0){
- bits = *bitplanes++;
- *pixels++ = (uint8_t)((bits >> 4) & 0X0F);
- *pixels++ = (uint8_t)((bits) & 0X0F);
- }
- } else if (bitsperpixel == 2){ // 2 bits/pixel, four pixels per byte
- while (bytesperline-- > 0){
- bits = *bitplanes++;
- *pixels++ = (uint8_t)((bits >> 6) & 0X03);
- *pixels++ = (uint8_t)((bits >> 4) & 0X03);
- *pixels++ = (uint8_t)((bits >> 2) & 0X03);
- *pixels++ = (uint8_t)((bits) & 0X03);
- }
- } else if (bitsperpixel == 1){ // 1 bits/pixel, 8 pixels per byte
- while (bytesperline-- > 0){
- bits = *bitplanes++;
- *pixels++ = ((bits & 0X80) != 0);
- *pixels++ = ((bits & 0X40) != 0);
- *pixels++ = ((bits & 0X20) != 0);
- *pixels++ = ((bits & 0X10) != 0);
- *pixels++ = ((bits & 0X08) != 0);
- *pixels++ = ((bits & 0X04) != 0);
- *pixels++ = ((bits & 0X02) != 0);
- *pixels++ = ((bits & 0X01) != 0);
- }
- }
- return true;
-}
-////////////////////////////////////////////////////////////////////////////////
-/* PCX_PackPixels(const int32_t p,uint8_t &c, uint8_t &n, int32_t &l, CxFile &f)
- * p = current pixel (-1 ends the line -2 ends odd line)
- * c = previous pixel
- * n = number of consecutive pixels
- */
-void CxImagePCX::PCX_PackPixels(const int32_t p,uint8_t &c, uint8_t &n, CxFile &f)
-{
- if (p!=c && n){
- if (n==1 && c<0xC0){
- f.PutC(c);
- } else {
- f.PutC(0xC0|n);
- f.PutC(c);
- }
- n=0;
- }
- if (n==0x3F) {
- f.PutC(0xFF);
- f.PutC(c);
- n=0;
- }
- if (p==-2) f.PutC(0);
- c=(uint8_t)p;
- n++;
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImagePCX::PCX_PackPlanes(uint8_t* buff, const int32_t size, CxFile &f)
-{
- uint8_t *start,*end;
- uint8_t c, previous, count;
-
- start = buff;
- end = buff + size;
- previous = *start++;
- count = 1;
-
- while (start < end) {
- c = *start++;
- if (c == previous && count < 63) {
- ++count;
- continue;
- }
-
- if (count > 1 || (previous & 0xc0) == 0xc0) {
- f.PutC( count | 0xc0 );
- }
- f.PutC(previous);
- previous = c;
- count = 1;
- }
-
- if (count > 1 || (previous & 0xc0) == 0xc0) {
- count |= 0xc0;
- f.PutC(count);
- }
- f.PutC(previous);
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImagePCX::PCX_PixelsToPlanes(uint8_t* raw, int32_t width, uint8_t* buf, int32_t plane)
-{
- int32_t cbit, x, mask;
- uint8_t *cp = buf-1;
-
- mask = 1 << plane;
- cbit = -1;
- for( x = 0; x < width; x++ ) {
- if( cbit < 0 ) {
- cbit = 7;
- *++cp = 0;
- }
- if( raw[x] & mask )
- *cp |= (1<<cbit);
- --cbit;
- }
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImagePCX::PCX_toh(PCXHEADER* p)
-{
- p->Xmin = m_ntohs(p->Xmin);
- p->Ymin = m_ntohs(p->Ymin);
- p->Xmax = m_ntohs(p->Xmax);
- p->Ymax = m_ntohs(p->Ymax);
- p->Hres = m_ntohs(p->Hres);
- p->Vres = m_ntohs(p->Vres);
- p->BytesPerLine = m_ntohs(p->BytesPerLine);
- p->PaletteType = m_ntohs(p->PaletteType);
-}
-////////////////////////////////////////////////////////////////////////////////
-#endif // CXIMAGE_SUPPORT_PCX
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