diff options
Diffstat (limited to 'archive/hge/CxImage/ximaska.cpp')
| -rw-r--r-- | archive/hge/CxImage/ximaska.cpp | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/archive/hge/CxImage/ximaska.cpp b/archive/hge/CxImage/ximaska.cpp new file mode 100644 index 0000000..6f1b1c2 --- /dev/null +++ b/archive/hge/CxImage/ximaska.cpp @@ -0,0 +1,126 @@ +/*
+ * File: ximaska.cpp
+ * Purpose: Platform Independent SKA Image Class Loader and Writer
+ * 25/Sep/2007 Davide Pizzolato - www.xdp.it
+ * CxImage version 7.0.0 31/Dec/2010
+ */
+
+#include "ximaska.h"
+
+#if CXIMAGE_SUPPORT_SKA
+
+////////////////////////////////////////////////////////////////////////////////
+#if CXIMAGE_SUPPORT_DECODE
+////////////////////////////////////////////////////////////////////////////////
+bool CxImageSKA::Decode(CxFile *hFile)
+{
+ if (hFile==NULL)
+ return false;
+
+ // read the header
+ SKAHEADER ska_header;
+ hFile->Read(&ska_header,sizeof(SKAHEADER),1);
+
+ ska_header.Width = m_ntohs(ska_header.Width);
+ ska_header.Height = m_ntohs(ska_header.Height);
+ ska_header.dwUnknown = m_ntohl(ska_header.dwUnknown);
+
+ // check header
+ if (ska_header.dwUnknown != 0x01000000 ||
+ ska_header.Width > 0x7FFF || ska_header.Height > 0x7FFF ||
+ ska_header.BppExp != 3)
+ return false;
+
+ if (info.nEscape == -1){
+ head.biWidth = ska_header.Width ;
+ head.biHeight= ska_header.Height;
+ info.dwType = CXIMAGE_FORMAT_SKA;
+ return true;
+ }
+
+ int32_t bpp = 1<<ska_header.BppExp;
+
+ Create(ska_header.Width,ska_header.Height,bpp,CXIMAGE_FORMAT_SKA);
+ if (!IsValid())
+ return false;
+
+ // read the palette
+ int32_t nColors = 1<<bpp;
+ rgb_color* ppal = (rgb_color*)malloc(nColors*sizeof(rgb_color));
+ if (!ppal) return false;
+ hFile->Read(ppal,nColors*sizeof(rgb_color),1);
+ SetPalette(ppal,nColors);
+ free(ppal);
+
+ //read the image
+ hFile->Read(GetBits(),ska_header.Width*ska_header.Height,1);
+
+ //reorder rows
+ if (GetEffWidth() != ska_header.Width){
+ uint8_t *src,*dst;
+ src = GetBits() + ska_header.Width*(ska_header.Height-1);
+ dst = GetBits(ska_header.Height-1);
+ for(int32_t y=0;y<ska_header.Height;y++){
+ memcpy(dst,src,ska_header.Width);
+ src -= ska_header.Width;
+ dst -= GetEffWidth();
+ }
+ }
+
+ Flip();
+
+ return true;
+}
+////////////////////////////////////////////////////////////////////////////////
+#endif //CXIMAGE_SUPPORT_DECODE
+////////////////////////////////////////////////////////////////////////////////
+#if CXIMAGE_SUPPORT_ENCODE
+////////////////////////////////////////////////////////////////////////////////
+bool CxImageSKA::Encode(CxFile * hFile)
+{
+ if (EncodeSafeCheck(hFile)) return false;
+
+ if(head.biBitCount > 8) {
+ strcpy(info.szLastError,"SKA Images must be 8 bit or less");
+ return false;
+ }
+
+ SKAHEADER ska_header;
+
+ ska_header.Width = (uint16_t)GetWidth();
+ ska_header.Height = (uint16_t)GetHeight();
+ ska_header.BppExp = 3;
+ ska_header.dwUnknown = 0x01000000;
+
+ ska_header.Width = m_ntohs(ska_header.Width);
+ ska_header.Height = m_ntohs(ska_header.Height);
+ ska_header.dwUnknown = m_ntohl(ska_header.dwUnknown);
+
+ hFile->Write(&ska_header,sizeof(SKAHEADER),1);
+
+ ska_header.Width = m_ntohs(ska_header.Width);
+ ska_header.Height = m_ntohs(ska_header.Height);
+ ska_header.dwUnknown = m_ntohl(ska_header.dwUnknown);
+
+ if (head.biBitCount<8) IncreaseBpp(8);
+
+ rgb_color pal[256];
+ for(int32_t idx=0; idx<256; idx++){
+ GetPaletteColor(idx,&(pal[idx].r),&(pal[idx].g),&(pal[idx].b));
+ }
+
+ hFile->Write(pal,256*sizeof(rgb_color),1);
+
+ uint8_t* src = GetBits(ska_header.Height-1);
+ for(int32_t y=0;y<ska_header.Height;y++){
+ hFile->Write(src,ska_header.Width,1);
+ src -= GetEffWidth();
+ }
+
+ return true;
+}
+////////////////////////////////////////////////////////////////////////////////
+#endif // CXIMAGE_SUPPORT_ENCODE
+////////////////////////////////////////////////////////////////////////////////
+#endif // CXIMAGE_SUPPORT_SKA
+
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