diff options
Diffstat (limited to 'smelt/sdl/CxImage/ximatga.cpp')
| -rw-r--r-- | smelt/sdl/CxImage/ximatga.cpp | 320 |
1 files changed, 0 insertions, 320 deletions
diff --git a/smelt/sdl/CxImage/ximatga.cpp b/smelt/sdl/CxImage/ximatga.cpp deleted file mode 100644 index f1a762a..0000000 --- a/smelt/sdl/CxImage/ximatga.cpp +++ /dev/null @@ -1,320 +0,0 @@ -/*
- * File: ximatga.cpp
- * Purpose: Platform Independent TGA Image Class Loader and Writer
- * 05/Jan/2001 Davide Pizzolato - www.xdp.it
- * CxImage version 7.0.0 31/Dec/2010
- */
-
-#include "ximatga.h"
-
-#if CXIMAGE_SUPPORT_TGA
-
-#include "ximaiter.h"
-
-// Definitions for image types.
-#define TGA_Null 0
-#define TGA_Map 1
-#define TGA_RGB 2
-#define TGA_Mono 3
-#define TGA_RLEMap 9
-#define TGA_RLERGB 10
-#define TGA_RLEMono 11
-#define TGA_CompMap 32
-#define TGA_CompMap4 33
-
-////////////////////////////////////////////////////////////////////////////////
-#if CXIMAGE_SUPPORT_DECODE
-////////////////////////////////////////////////////////////////////////////////
-bool CxImageTGA::Decode(CxFile *hFile)
-{
- if (hFile == NULL) return false;
-
- TGAHEADER tgaHead;
-
- cx_try
- {
- if (hFile->Read(&tgaHead,sizeof(tgaHead),1)==0)
- cx_throw("Not a TGA");
-
- tga_toh(&tgaHead);
-
- bool bCompressed;
- switch (tgaHead.ImageType){
- case TGA_Map:
- case TGA_RGB:
- case TGA_Mono:
- bCompressed = false;
- break;
- case TGA_RLEMap:
- case TGA_RLERGB:
- case TGA_RLEMono:
- bCompressed = true;
- break;
- default:
- cx_throw("Unknown TGA image type");
- }
-
- if (tgaHead.ImageWidth==0 || tgaHead.ImageHeight==0 || tgaHead.PixelDepth==0 || tgaHead.CmapLength>256)
- cx_throw("bad TGA header");
-
- if (tgaHead.PixelDepth!=8 && tgaHead.PixelDepth!=15 && tgaHead.PixelDepth!=16 && tgaHead.PixelDepth!=24 && tgaHead.PixelDepth!=32)
- cx_throw("bad TGA header");
-
- if (info.nEscape == -1){
- head.biWidth = tgaHead.ImageWidth ;
- head.biHeight= tgaHead.ImageHeight;
- info.dwType = CXIMAGE_FORMAT_TGA;
- return true;
- }
-
- if (tgaHead.IdLength>0) hFile->Seek(tgaHead.IdLength,SEEK_CUR); //skip descriptor
-
- Create(tgaHead.ImageWidth, tgaHead.ImageHeight, tgaHead.PixelDepth, CXIMAGE_FORMAT_TGA);
-#if CXIMAGE_SUPPORT_ALPHA // <vho>
- if (tgaHead.PixelDepth==32) AlphaCreate(); // Image has alpha channel
-#endif //CXIMAGE_SUPPORT_ALPHA
-
- if (!IsValid()) cx_throw("TGA Create failed");
-
- if (info.nEscape) cx_throw("Cancelled"); // <vho> - cancel decoding
-
- if (tgaHead.CmapType != 0){ // read the palette
- rgb_color pal[256];
- hFile->Read(pal,tgaHead.CmapLength*sizeof(rgb_color), 1);
- for (int32_t i=0;i<tgaHead.CmapLength; i++) SetPaletteColor((uint8_t)i,pal[i].b,pal[i].g,pal[i].r);
- }
-
- if (tgaHead.ImageType == TGA_Mono || tgaHead.ImageType == TGA_RLEMono)
- SetGrayPalette();
-
- // Bits 4 & 5 of the Image Descriptor byte control the ordering of the pixels.
- bool bXReversed = ((tgaHead.ImagDesc & 16) == 16);
- bool bYReversed = ((tgaHead.ImagDesc & 32) == 32);
-
- CImageIterator iter(this);
- uint8_t rleLeftover = 255; //for images with illegal packet boundary
- uint8_t* pDest;
- for (int32_t y=0; y < tgaHead.ImageHeight; y++){
-
- if (info.nEscape) cx_throw("Cancelled"); // <vho> - cancel decoding
-
- if (hFile == NULL || hFile->Eof()) cx_throw("corrupted TGA");
-
- if (bYReversed) pDest = iter.GetRow(tgaHead.ImageHeight-y-1);
- else pDest = iter.GetRow(y);
-
- if (bCompressed) rleLeftover = ExpandCompressedLine(pDest,&tgaHead,hFile,tgaHead.ImageWidth,y,rleLeftover);
- else ExpandUncompressedLine (pDest,&tgaHead,hFile,tgaHead.ImageWidth,y,0);
- }
-
- if (bXReversed) Mirror();
-
-#if CXIMAGE_SUPPORT_ALPHA
- if (bYReversed && tgaHead.PixelDepth==32) AlphaFlip(); //<lioucr>
-#endif //CXIMAGE_SUPPORT_ALPHA
-
- } cx_catch {
- if (strcmp(message,"")) strncpy(info.szLastError,message,255);
- return false;
- }
- return true;
-}
-////////////////////////////////////////////////////////////////////////////////
-#endif //CXIMAGE_SUPPORT_DECODE
-////////////////////////////////////////////////////////////////////////////////
-#if CXIMAGE_SUPPORT_ENCODE
-////////////////////////////////////////////////////////////////////////////////
-bool CxImageTGA::Encode(CxFile * hFile)
-{
- if (EncodeSafeCheck(hFile)) return false;
-
- if (head.biBitCount<8){
- strcpy(info.szLastError,"Bit depth must be 8 or 24");
- return false;
- }
-
- TGAHEADER tgaHead;
-
- tgaHead.IdLength = 0; // Image ID Field Length
- tgaHead.CmapType = GetPalette()!=0; // Color Map Type
- tgaHead.ImageType = (head.biBitCount == 8) ? (uint8_t)TGA_Map : (uint8_t)TGA_RGB; // Image Type
-
- tgaHead.CmapIndex=0; // First Entry Index
- tgaHead.CmapLength=(head.biBitCount == 8) ? 256 : 0; // Color Map Length
- tgaHead.CmapEntrySize=(head.biBitCount == 8) ? (uint8_t)24 : (uint8_t)0; // Color Map Entry Size
-
- tgaHead.X_Origin=0; // X-origin of Image
- tgaHead.Y_Origin=0; // Y-origin of Image
- tgaHead.ImageWidth=(uint16_t)head.biWidth; // Image Width
- tgaHead.ImageHeight=(uint16_t)head.biHeight; // Image Height
- tgaHead.PixelDepth=(uint8_t)head.biBitCount; // Pixel Depth
- tgaHead.ImagDesc=0; // Image Descriptor
-
- if (pAlpha && head.biBitCount==24) tgaHead.PixelDepth=32;
-
- tga_toh(&tgaHead);
- hFile->Write(&tgaHead,sizeof(TGAHEADER),1);
- tga_toh(&tgaHead);
-
- if (head.biBitCount==8){
- rgb_color pal[256];
- RGBQUAD* ppal = GetPalette();
- for (int32_t i=0;i<256; i++){
- pal[i].r = ppal[i].rgbBlue;
- pal[i].g = ppal[i].rgbGreen;
- pal[i].b = ppal[i].rgbRed;
- }
- hFile->Write(&pal,256*sizeof(rgb_color),1);
- }
-
- CImageIterator iter(this);
- uint8_t* pDest;
- if (pAlpha==0 || head.biBitCount==8){
- for (int32_t y=0; y < tgaHead.ImageHeight; y++){
- pDest = iter.GetRow(y);
- hFile->Write(pDest,tgaHead.ImageWidth * (head.biBitCount >> 3),1);
- }
- } else {
- pDest = (uint8_t*)malloc(4*tgaHead.ImageWidth);
- RGBQUAD c;
- for (int32_t y=0; y < tgaHead.ImageHeight; y++){
- for(int32_t x=0, x4=0;x<tgaHead.ImageWidth;x++, x4+=4){
- c = BlindGetPixelColor(x,y);
- pDest[x4+0]=c.rgbBlue;
- pDest[x4+1]=c.rgbGreen;
- pDest[x4+2]=c.rgbRed;
-#if CXIMAGE_SUPPORT_ALPHA // <vho>
- pDest[x4+3]=AlphaGet(x,y);
-#else
- pDest[x4+3]=0;
-#endif //CXIMAGE_SUPPORT_ALPHA
- }
- hFile->Write(pDest,4*tgaHead.ImageWidth,1);
- }
- free(pDest);
- }
- return true;
-}
-////////////////////////////////////////////////////////////////////////////////
-#endif // CXIMAGE_SUPPORT_ENCODE
-////////////////////////////////////////////////////////////////////////////////
-uint8_t CxImageTGA::ExpandCompressedLine(uint8_t* pDest,TGAHEADER* ptgaHead,CxFile *hFile,int32_t width, int32_t y, uint8_t rleLeftover)
-{
- uint8_t rle;
- int32_t filePos=0;
- for (int32_t x=0; x<width; ){
- if (rleLeftover != 255){
- rle = rleLeftover;
- rleLeftover = 255;
- } else {
- hFile->Read(&rle,1,1);
- }
- if (rle & 128) { // RLE-Encoded packet
- rle -= 127; // Calculate real repeat count.
- if ((x+rle)>width){
- rleLeftover = (uint8_t)(128 + (rle - (width - x) - 1));
- filePos = hFile->Tell();
- rle = (uint8_t)(width - x);
- }
- switch (ptgaHead->PixelDepth)
- {
- case 32: {
- RGBQUAD color;
- hFile->Read(&color,4,1);
- for (int32_t ix = 0; ix < rle; ix++){
- memcpy(&pDest[3*ix],&color,3);
-#if CXIMAGE_SUPPORT_ALPHA // <vho>
- AlphaSet(ix+x,y,color.rgbReserved);
-#endif //CXIMAGE_SUPPORT_ALPHA
- }
- break;
- }
- case 24: {
- rgb_color triple;
- hFile->Read(&triple,3,1);
- for (int32_t ix = 0; ix < rle; ix++) memcpy(&pDest[3*ix],&triple,3);
- break;
- }
- case 15:
- case 16: {
- uint16_t pixel;
- hFile->Read(&pixel,2,1);
- rgb_color triple;
- triple.r = (uint8_t)(( pixel & 0x1F ) * 8); // red
- triple.g = (uint8_t)(( pixel >> 2 ) & 0x0F8); // green
- triple.b = (uint8_t)(( pixel >> 7 ) & 0x0F8); // blue
- for (int32_t ix = 0; ix < rle; ix++){
- memcpy(&pDest[3*ix],&triple,3);
- }
- break;
- }
- case 8: {
- uint8_t pixel;
- hFile->Read(&pixel,1,1);
- for (int32_t ix = 0; ix < rle; ix++) pDest[ix] = pixel;
- }
- }
- if (rleLeftover!=255) hFile->Seek(filePos, SEEK_SET);
- } else { // Raw packet
- rle += 1; // Calculate real repeat count.
- if ((x+rle)>width){
- rleLeftover = (uint8_t)(rle - (width - x) - 1);
- rle = (uint8_t)(width - x);
- }
- ExpandUncompressedLine(pDest,ptgaHead,hFile,rle,y,x);
- }
- if (head.biBitCount == 24) pDest += rle*3; else pDest += rle;
- x += rle;
- }
- return rleLeftover;
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImageTGA::ExpandUncompressedLine(uint8_t* pDest,TGAHEADER* ptgaHead,CxFile *hFile,int32_t width, int32_t y, int32_t xoffset)
-{
- switch (ptgaHead->PixelDepth){
- case 8:
- hFile->Read(pDest,width,1);
- break;
- case 15:
- case 16:{
- uint8_t* dst=pDest;
- uint16_t pixel;
- for (int32_t x=0; x<width; x++){
- hFile->Read(&pixel,2,1);
- *dst++ = (uint8_t)(( pixel & 0x1F ) * 8); // blue
- *dst++ = (uint8_t)(( pixel >> 2 ) & 0x0F8); // green
- *dst++ = (uint8_t)(( pixel >> 7 ) & 0x0F8); // red
- }
- break;
- }
- case 24:
- hFile->Read(pDest,3*width,1);
- break;
- case 32:{
- uint8_t* dst=pDest;
- for (int32_t x=0; x<width; x++){
- RGBQUAD pixel;
- hFile->Read(&pixel,4,1);
- *dst++ = pixel.rgbBlue;
- *dst++ = pixel.rgbGreen;
- *dst++ = pixel.rgbRed;
-#if CXIMAGE_SUPPORT_ALPHA // <vho>
- AlphaSet(x+xoffset,y,pixel.rgbReserved); //alpha
-#endif //CXIMAGE_SUPPORT_ALPHA
- }
- break;
- }
- }
-}
-////////////////////////////////////////////////////////////////////////////////
-void CxImageTGA::tga_toh(TGAHEADER* p)
-{
- p->CmapIndex = m_ntohs(p->CmapIndex);
- p->CmapLength = m_ntohs(p->CmapLength);
- p->X_Origin = m_ntohs(p->X_Origin);
- p->Y_Origin = m_ntohs(p->Y_Origin);
- p->ImageWidth = m_ntohs(p->ImageWidth);
- p->ImageHeight = m_ntohs(p->ImageHeight);
-}
-////////////////////////////////////////////////////////////////////////////////
-#endif // CXIMAGE_SUPPORT_TGA
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