637 lines
No EOL
11 KiB
C++
637 lines
No EOL
11 KiB
C++
#include <string.h>
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#include "pic_private.h"
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#include "pic.h"
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static unsigned long NbPics=0;
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static PIC_PICTURE *HeadPic=NULL;
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// ----------------------------------------------------------------------------------------------------------------------------------
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static PIC_PICTURE *GetPic(unsigned long id)
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{
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PIC_PICTURE *pic;
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for(pic=HeadPic ; pic ; pic=pic->Next)
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{
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if (pic->ID==id)
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{
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return(pic);
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}
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}
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return(NULL);
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}
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// ----------------------------------------------------------------------------------------------------------------------------------
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unsigned long PIC_Load(char* FileName, unsigned char Quantize)
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{
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char ext[4];
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unsigned long type;
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unsigned long i,taken,id;
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PIC_PICTURE *pic;
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char *pDatas;
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char *pPal;
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unsigned long w,h,Depth;
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unsigned long ret;
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// --- Init
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ret=0;
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type=0;
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id=0;
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taken=0;
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w=0;
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h=0;
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Depth=0;
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pic=NULL;
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pDatas=NULL;
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pPal=NULL;
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// --- Get 1st available ID
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for(i=1 ; i<=NbPics+1 ; i++)
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{
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taken=0;
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for(pic=HeadPic ; pic ; pic=pic->Next)
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{
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if (pic->ID==i)
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{
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taken=1;
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break;
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}
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}
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if (!taken)
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{
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id=i;
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break;
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}
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}
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if (!id)
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{
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Pic_SetError("Load, unable to create ID");
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return(0);
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}
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// --- Load pic
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if (FileName)
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{
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ext[0]=FileName[strlen(FileName)-3];
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ext[1]=FileName[strlen(FileName)-2];
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ext[2]=FileName[strlen(FileName)-1];
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ext[3]=0;
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strupr(ext);
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if ( !strcmp(ext,"JPG") )
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{
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type=1;
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}
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else if ( !strcmp(ext,"TGA") )
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{
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type=2;
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}
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else if ( !strcmp(ext,"BMP") )
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{
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type=3;
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}
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switch(type)
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{
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// - JPG
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case 1:
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if (!Quantize)
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{
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Depth=24;
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ret=Pic_JPG_Read(FileName,NULL,&pDatas,&w,&h);
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}
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else
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{
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Depth=8;
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ret=Pic_JPG_Read(FileName,&pPal,&pDatas,&w,&h);
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}
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if (!ret)
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{
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Pic_SetError("Load, unable to load JPG file %s",FileName);
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return(0);
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}
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break;
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// - TGA
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case 2:
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ret=Pic_TGA_Read(FileName,&pPal,&pDatas,&w,&h,&Depth);
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if (!ret)
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{
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Pic_SetError("Load, unable to load TGA file %s",FileName);
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return(0);
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}
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break;
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// - BMP
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case 3:
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ret=Pic_BMP_Read(FileName,&pPal,&pDatas,&w,&h,&Depth);
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if (!ret)
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{
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Pic_SetError("Load, unable to load BMP file %s",FileName);
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return(0);
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}
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break;
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// - Unknown
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default:
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Pic_SetError("Load, unknown extension for %s",FileName);
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return(0);
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}
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}
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// --- Create and place new pic struct
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pic=(PIC_PICTURE *)Pic_calloc(1,sizeof(PIC_PICTURE));
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if (!pic)
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{
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Pic_SetError("Load, not enough memory for internal structure");
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return(0);
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}
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pic->Next=HeadPic;
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HeadPic=pic;
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NbPics++;
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pic->ID=id;
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pic->pDatas=pDatas;
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pic->pPal=pPal;
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pic->Width=w;
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pic->Height=h;
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pic->Depth=Depth;
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return(id);
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}
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// ----------------------------------------------------------------------------------------------------------------------------------
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unsigned long PIC_Create(char* pPal, char* pDatas, unsigned long w, unsigned long h, unsigned long d)
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{
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unsigned long i,taken,id;
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PIC_PICTURE *pic;
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// --- Init
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id=0;
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taken=0;
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pic=NULL;
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// --- Get 1st available ID
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for(i=1 ; i<=NbPics+1 ; i++)
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{
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taken=0;
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for(pic=HeadPic ; pic ; pic=pic->Next)
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{
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if (pic->ID==i)
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{
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taken=1;
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break;
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}
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}
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if (!taken)
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{
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id=i;
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break;
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}
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}
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if (!id)
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{
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Pic_SetError("Create, unable to create ID");
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return(0);
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}
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// --- Create pic
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if (!pDatas)
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{
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pDatas=(char *)Pic_calloc(1,w*h*d/8);
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if (!pDatas)
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{
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Pic_SetError("Create, not enough memory for datas");
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return(0);
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}
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}
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if (d==8)
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{
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if (!pPal)
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{
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pPal=(char *)Pic_calloc(1,256*3);
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if (!pPal)
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{
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Pic_SetError("Create, not enough memory for palette");
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return(0);
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}
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}
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}
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else
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{
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pPal=NULL;
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}
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// --- Create and place new pic struct
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pic=(PIC_PICTURE *)Pic_calloc(1,sizeof(PIC_PICTURE));
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if (!pic)
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{
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Pic_SetError("Create, not enough memory for internal structure");
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return(0);
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}
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pic->Next=HeadPic;
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HeadPic=pic;
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NbPics++;
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pic->ID=id;
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pic->pDatas=pDatas;
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pic->pPal=pPal;
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pic->Width=w;
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pic->Height=h;
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pic->Depth=d;
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return(id);
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}
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// ----------------------------------------------------------------------------------------------------------------------------------
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unsigned long PIC_GetInfos( unsigned long id,
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char **ppPal, char **ppDatas,
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unsigned long *pW, unsigned long *pH, unsigned long *pD)
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{
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PIC_PICTURE *pic;
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pic=GetPic(id);
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if (!pic)
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{
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Pic_SetError("GetInfos, picture internal structure not found");
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return(0);
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}
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if (ppPal)
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{
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*ppPal=pic->pPal;
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}
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if (ppDatas)
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{
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*ppDatas=pic->pDatas;
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}
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if (pW)
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{
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*pW=pic->Width;
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}
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if (pH)
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{
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*pH=pic->Height;
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}
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if (pD)
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{
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*pD=pic->Depth;
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}
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return(id);
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}
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// ----------------------------------------------------------------------------------------------------------------------------------
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static char* Conv8To24(unsigned long id)
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{
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PIC_PICTURE *pic;
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char *buf;
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unsigned long i;
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pic=GetPic(id);
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if (!pic)
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{
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Pic_SetError("Conv8To24, picture internal structure not found");
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return(NULL);
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}
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buf=(char *)Pic_malloc(pic->Width*pic->Height*3);
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if (!buf)
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{
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Pic_SetError("Conv8To24, not enough memory for temporary buffer");
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return(NULL);
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}
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for(i=0 ; i<pic->Width*pic->Height ; i++)
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{
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buf[i*3+0]=pic->pPal[pic->pDatas[i]*3+0];
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buf[i*3+1]=pic->pPal[pic->pDatas[i]*3+1];
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buf[i*3+2]=pic->pPal[pic->pDatas[i]*3+2];
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}
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return(buf);
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}
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// ----------------------------------------
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static char* Conv8To16(unsigned long id)
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{
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PIC_PICTURE *pic;
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unsigned short *buf;
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unsigned long i;
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unsigned short r,g,b,pix16;
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pic=GetPic(id);
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if (!pic)
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{
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Pic_SetError("Conv8To24, picture internal structure not found");
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return(NULL);
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}
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buf=(unsigned short*)Pic_malloc(pic->Width*pic->Height*2);
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if (!buf)
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{
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Pic_SetError("Conv8To24, not enough memory for temporary buffer");
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return(NULL);
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}
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for(i=0 ; i<pic->Width*pic->Height ; i++)
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{
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b=pic->pPal[pic->pDatas[i]*3+0];
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g=pic->pPal[pic->pDatas[i]*3+1];
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r=pic->pPal[pic->pDatas[i]*3+2];
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r>>=3;
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g>>=3; g&=0x3E;
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b>>=3;
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pix16=(r<<10)+(g<<5)+b;
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buf[i]=pix16;
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}
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return (char*)buf;
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}
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// ----------------------------------------
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static char* Conv16To24(unsigned long id)
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{
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PIC_PICTURE *pic;
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unsigned short *pDatas;
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unsigned char *buf;
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unsigned long i;
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unsigned short r,g,b;
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pic=GetPic(id);
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if (!pic)
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{
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Pic_SetError("Conv16To24, picture internal structure not found");
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return(NULL);
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}
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buf=(unsigned char *)Pic_malloc(pic->Width*pic->Height*3);
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if (!buf)
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{
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Pic_SetError("Conv16To24, not enough memory for temporary buffer");
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return(NULL);
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}
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pDatas=(unsigned short*)pic->pDatas;
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for(i=0 ; i<pic->Width*pic->Height ; i++)
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{
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r=(pDatas[i] & 0x7C00)>>(10-3);
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g=(pDatas[i] & 0x03E0)>>(5-3);
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b=(pDatas[i] & 0x001F)<<3;
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buf[i*3+0]=(unsigned char)r;
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buf[i*3+1]=(unsigned char)g;
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buf[i*3+2]=(unsigned char)b;
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}
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return (char*)buf;
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}
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// ----------------------------------------
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static char* Conv24To16(unsigned long id)
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{
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PIC_PICTURE *pic;
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unsigned short *buf;
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unsigned long i;
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unsigned short r,g,b;
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unsigned short pix16;
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pic=GetPic(id);
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if (!pic)
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{
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Pic_SetError("Conv24To16, picture internal structure not found");
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return(NULL);
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}
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buf=(unsigned short*)Pic_malloc(pic->Width*pic->Height*2);
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if (!buf)
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{
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Pic_SetError("Conv24To16, not enough memory for temporary buffer");
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return(NULL);
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}
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for(i=0 ; i<pic->Width*pic->Height ; i++)
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{
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r=pic->pDatas[i*3+0];
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g=pic->pDatas[i*3+1];
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b=pic->pDatas[i*3+2];
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// r : 5 bits forts (0x7C)
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// g : 5 bits (6e zapped) (0x3E)
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// b : 5 bits faibles (0x1F)
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r>>=3;
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g>>=3; g&=0x3E;
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b>>=3;
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pix16=(r<<10)+(g<<5)+b;
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buf[i]=pix16;
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}
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return (char*)buf;
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}
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// ----------------------------------------
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static char* ConvPic(PIC_PICTURE *pic, unsigned long type, char* pErr)
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{
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char *buf;
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unsigned long src,dst;
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*pErr=0;
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buf=NULL;
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src=pic->Depth;
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if (type==PIC_TYPE_TGA8 || type==PIC_TYPE_BMP8)
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{
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dst=8;
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}
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if (type==PIC_TYPE_TGA16)
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{
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dst=16;
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}
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if (type==PIC_TYPE_JPG || type==PIC_TYPE_TGA24 || type==PIC_TYPE_BMP24)
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{
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dst=24;
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}
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// ---
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if (src==dst)
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{
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return(NULL);
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}
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// ---
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if (src==8 && dst==24)
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{
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buf=Conv8To24(pic->ID);
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if (!buf)
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{
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*pErr=1;
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}
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return(buf);
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}
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if (src==8 && dst==16)
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{
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buf=Conv8To16(pic->ID);
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if (!buf)
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{
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*pErr=1;
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}
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return(buf);
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}
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// ---
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if (src==16 && dst==24)
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{
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buf=Conv16To24(pic->ID);
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if (!buf)
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{
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*pErr=1;
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}
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return(buf);
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}
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// ---
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if (src==24 && dst==16)
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{
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buf=Conv24To16(pic->ID);
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if (!buf)
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{
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*pErr=1;
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}
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return buf;
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}
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// ---
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if (src==24 && dst==8)
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{
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Pic_SetError("ConvPic, downsampling 24 to 8 bits unsupported");
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*pErr=1;
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return(NULL);
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}
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Pic_SetError("ConvPic, conversion %d to %d unsupported",src,dst);
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*pErr=1;
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return(NULL);
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}
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// ----------------------------------------
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unsigned long PIC_Save(unsigned long id, char* FileName, unsigned long type, unsigned long qual)
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{
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PIC_PICTURE *pic;
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char err;
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char *buf;
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char *freeit;
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unsigned long depth;
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freeit=NULL;
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pic=GetPic(id);
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if (!pic)
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{
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Pic_SetError("Save %s, picture internal structure not found",FileName);
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return(0);
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}
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freeit = ConvPic(pic,type,&err);
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if (err)
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{
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Pic_SetError("Save %s, error while converting picture",FileName);
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return(0);
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}
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if (!freeit)
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{
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buf=pic->pDatas;
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}
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else
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{
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buf=freeit;
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}
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err=0;
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switch(type)
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{
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// ---
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case PIC_TYPE_JPG:
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if ( !Pic_JPG_Write(FileName,qual,buf,pic->Width,pic->Height) )
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{
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if (freeit)
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{
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Pic_free(buf);
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}
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Pic_SetError("Save %s, error while saving JPG file",FileName);
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err=1;
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}
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break;
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// ---
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case PIC_TYPE_TGA8:
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case PIC_TYPE_TGA16:
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case PIC_TYPE_TGA24:
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if (type==PIC_TYPE_TGA8)
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{
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depth=8;
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}
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if (type==PIC_TYPE_TGA16)
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{
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depth=16;
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}
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if (type==PIC_TYPE_TGA24)
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{
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depth=24;
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}
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if ( !Pic_TGA_Write(FileName,pic->pPal,buf,pic->Width,pic->Height,depth) )
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{
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if (freeit)
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{
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Pic_free(freeit);
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}
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Pic_SetError("Save %s, error while saving TGA file",FileName);
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err=1;
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}
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break;
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// ---
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case PIC_TYPE_BMP8:
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case PIC_TYPE_BMP24:
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if (type==PIC_TYPE_BMP8)
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{
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depth=8;
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}
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if (type==PIC_TYPE_BMP24)
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{
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depth=24;
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}
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if ( !Pic_BMP_Write(FileName,pic->pPal,buf,pic->Width,pic->Height,depth) )
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{
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if (freeit)
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{
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Pic_free(freeit);
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}
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Pic_SetError("Save %s, error while saving BMP file",FileName);
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err=1;
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}
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break;
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// ---
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default:
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Pic_SetError("Save %s, unknow save format/type",FileName);
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err=1;
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break;
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}
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if (freeit)
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{
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Pic_free(freeit);
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}
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return(err-1);
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}
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// ----------------------------------------------------------------------------------------------------------------------------------
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unsigned long PIC_Destroy(unsigned long id)
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{
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PIC_PICTURE *prevpic,*pic;
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unsigned long found;
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prevpic=NULL;
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found=0;
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for(pic=HeadPic ; pic ; pic=pic->Next)
|
|
{
|
|
if (pic->ID==id)
|
|
{
|
|
found=1;
|
|
break;
|
|
}
|
|
prevpic=pic;
|
|
}
|
|
if (!found)
|
|
{
|
|
Pic_SetError("Destroy, picture internal structure not found");
|
|
return(0);
|
|
}
|
|
if (prevpic)
|
|
{
|
|
prevpic->Next=pic->Next;
|
|
}
|
|
if (pic->pDatas)
|
|
{
|
|
Pic_free(pic->pDatas);
|
|
}
|
|
if (pic->pPal)
|
|
{
|
|
Pic_free(pic->pPal);
|
|
}
|
|
if (pic==HeadPic)
|
|
{
|
|
HeadPic=pic->Next;
|
|
}
|
|
Pic_free(pic);
|
|
return(1);
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------------------------------------------------------------
|