108 lines
2.7 KiB
C++
108 lines
2.7 KiB
C++
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//mactexturesimport.cpp
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//mac-specific (or rather "QuickTime-Specific") code to load textures
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#include <OpenGL/gl.h>
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#include <QuickTime/QuickTime.h>
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#include <string.h>
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#include "fileio.h"
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#include "error.h"
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#include "gamemem.h"
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#include "texturesimport.h"
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#include "network.h"
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typedef struct{
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UInt8 r,g,b,a;
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}tRGBAColor;
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typedef struct{
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UInt8 a,r,g,b;
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}tARGBColor;
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void *TexturesLoadImportBuffer(tFileRef tex,int *xSize,int *ySize)
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{
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ComponentInstance gi;
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int gotImage=false;
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char *fileExtension=FileGetExtension(tex);
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if(!_stricmp(fileExtension,kFileTypeImageURL)){
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tImageURL *url=(tImageURL*)FileGetParsedDataPtr(tex,kParserTypeImageURL,sizeof(tImageURL));
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Handle dataRef=NewHandle(strlen(url->url)+1);
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strcpy(*dataRef,url->url);
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if(!gInternetAvailable)
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tex=url->offlineImage;
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else if(GetGraphicsImporterForDataRef(dataRef,URLDataHandlerSubType,&gi)!=noErr)
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tex=url->offlineImage;
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else
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gotImage=true;
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}
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if(!gotImage)
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{
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void *textureData=FileGetDataPtr(tex);
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Handle dataHandle,dataRef;
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int size=FileGetSize(tex);
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//Get a Handle with the texture file data in it
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PtrToHand(textureData,&dataHandle,FileGetSize(tex));
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char *name=FileGetName(tex);
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unsigned char len=strlen(name);
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//create a new data reference
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dataRef=NewHandle(sizeof(Handle)+len+1);
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*((Handle*)(*dataRef))=dataHandle;
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BlockMoveData(name,*dataRef+sizeof(Handle)+1,len);
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*(unsigned char*)(*dataRef+sizeof(Handle))=len;
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HandleError(GetGraphicsImporterForDataRef(dataRef,HandleDataHandlerSubType,&gi));
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}
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// GWorldPtr oldGW;
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// GDHandle oldGD;
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// GetGWorld(&oldGW,&oldGD);
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//get image bounds
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Rect bounds;
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HandleError(GraphicsImportGetNaturalBounds(gi,&bounds));
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*xSize=bounds.right-bounds.left;
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*ySize=bounds.bottom-bounds.top;
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//create a buffer to hold the decompressed pixel data
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int rowBytes=*xSize*4;
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void *imageBuffer=MemoryAllocateBlock(*ySize*rowBytes);
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//create a GWorld structure for the pixel buffer
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GWorldPtr imageGW;
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QTNewGWorldFromPtr(&imageGW,k32ARGBPixelFormat,&bounds,nil,nil,0,imageBuffer,rowBytes);
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//Set up graphics importer
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HandleError(GraphicsImportSetGWorld(gi,imageGW,nil));
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HandleError(GraphicsImportSetQuality(gi,codecLosslessQuality));
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//decompress the image to the GWorld
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LockPixels(GetGWorldPixMap(imageGW));
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HandleError(GraphicsImportDraw(gi));
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UnlockPixels(GetGWorldPixMap(imageGW));
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//convert ARGB to RGBA
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for(int i=0;i<*ySize*rowBytes/4;i++)
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{
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tARGBColor buf=*(((tARGBColor*)imageBuffer)+i);
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tRGBAColor c;
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c.a=buf.a;
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c.r=buf.r;
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c.g=buf.g;
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c.b=buf.b;
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*(((tRGBAColor*)imageBuffer)+i)=c;
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}
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//re-set the GWorld to use.
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// SetGWorld(oldGW,oldGD);
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//dispose our structures.
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DisposeGWorld(imageGW);
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CloseComponent(gi);
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return imageBuffer;
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}
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