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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 958 | leency | 1 | #include "..\kosSyst.h" |
| 2 | #include "bmp.h" |
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| 3 | |||
| 4 | int BMPFile::LoadBMPFile(Byte* filebuff, Dword filesize) |
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| 5 | { |
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| 6 | Dword offset; |
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| 7 | |||
| 8 | memcpy((Byte*)&Bmp_head,(Byte*)filebuff,sizeof(tagBITMAPFILEHEADER)); |
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| 9 | memcpy((Byte*)&Info_head,(Byte*)filebuff+14,sizeof(tagBITMAPINFOHEADER)); |
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| 10 | |||
| 11 | width=Info_head.biWidth; |
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| 12 | height=Info_head.biHeight; |
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| 13 | offset=(Dword)Bmp_head.bfOffbits; |
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| 14 | |||
| 15 | int state=0; |
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| 16 | if (Bmp_head.bfType==0x4d42 && !Info_head.biCompression) |
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| 17 | { |
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| 18 | Byte* cBuffer; |
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| 19 | Byte* pImg; |
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| 20 | Byte* pPal; |
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| 21 | Dword x,y; |
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| 22 | Byte r; |
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| 23 | Dword s,p; |
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| 24 | Dword cWidth; |
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| 25 | int i; |
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| 26 | |||
| 27 | buffer=kos_GetMemory(width*height*3); |
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| 28 | pImg=filebuff+offset; |
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| 29 | pPal=filebuff+53; |
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| 30 | |||
| 31 | int align_bytes = (4 - ((width * 3) % 4)) % 4; |
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| 32 | Dword bpp = Info_head.biBitCount; |
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| 33 | |||
| 34 | switch(Info_head.biBitCount) |
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| 35 | { |
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| 36 | /* 16,24,32-bit decoding */ |
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| 37 | case 32: |
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| 38 | case 24: |
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| 39 | case 16: |
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| 40 | for(y=height-1;y!=-1;y--) |
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| 41 | { |
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| 42 | for(x=0;x |
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| 43 | { |
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| 44 | cBuffer=buffer+(y*width*3)+x*3; |
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| 45 | if (Info_head.biBitCount==16) |
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| 46 | { |
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| 47 | *(cBuffer+0)=(Byte)((*(Word*)(pImg)) & 31)<<3; |
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| 48 | *(cBuffer+1)=(Byte)((*(Word*)(pImg)>>5) & 31)<<3; |
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| 49 | *(cBuffer+2)=(Byte)((*(Word*)(pImg)>>10) & 31)<<3; |
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| 50 | } else { |
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| 51 | *(cBuffer+0)=*(pImg+0); |
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| 52 | *(cBuffer+1)=*(pImg+1); |
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| 53 | *(cBuffer+2)=*(pImg+2); |
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| 54 | } |
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| 55 | pImg=pImg+Info_head.biBitCount/8; |
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| 56 | } |
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| 57 | pImg=pImg+align_bytes; |
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| 58 | } |
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| 59 | break; |
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| 60 | /* 8-bit decoding */ |
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| 61 | case 8: |
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| 62 | for(y=height-1;y!=-1;y--) |
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| 63 | { |
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| 64 | for(x=0;x |
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| 65 | { |
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| 66 | r=*(pImg); pImg++; |
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| 67 | cBuffer=buffer+(y*width*3)+x*3; |
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| 68 | *(cBuffer+0)=(Byte)(pPal[r*4+1]); |
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| 69 | *(cBuffer+1)=(Byte)(pPal[r*4+2]); |
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| 70 | *(cBuffer+2)=(Byte)(pPal[r*4+3]); |
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| 71 | } |
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| 72 | } |
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| 73 | break; |
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| 74 | /* 1,4-bit decode */ |
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| 75 | case 4: |
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| 76 | case 1: |
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| 77 | for(y=height-1;y!=-1;y--) |
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| 78 | { |
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| 79 | x=0; |
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| 80 | while(x |
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| 81 | { |
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| 82 | s=*(Dword*)(pImg); |
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| 83 | pImg=pImg+4; |
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| 84 | __asm |
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| 85 | { |
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| 86 | mov eax,s |
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| 87 | bswap eax |
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| 88 | mov s,eax |
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| 89 | } |
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| 90 | for(i=0;i<32/bpp;i++) |
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| 91 | { |
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| 92 | if (x>=width) break; |
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| 93 | __asm |
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| 94 | { |
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| 95 | mov eax,s |
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| 96 | mov ecx,bpp |
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| 97 | rol eax,cl |
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| 98 | mov s,eax |
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| 99 | mov ebx,1 |
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| 100 | shl ebx,cl |
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| 101 | dec ebx |
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| 102 | and eax,ebx |
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| 103 | mov p,eax |
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| 104 | } |
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| 105 | cBuffer=buffer+(y*width*3)+x*3; |
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| 106 | *(cBuffer+0)=(Byte)(pPal[p*4+1]); |
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| 107 | *(cBuffer+1)=(Byte)(pPal[p*4+2]); |
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| 108 | *(cBuffer+2)=(Byte)(pPal[p*4+3]); |
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| 109 | x++; |
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| 110 | } |
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| 111 | } |
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| 112 | } |
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| 113 | break; |
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| 114 | default: |
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| 115 | state=1; |
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| 116 | break; |
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| 117 | } |
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| 118 | } else { |
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| 119 | state=1; |
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| 120 | } |
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| 121 | return state; |
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| 122 | } |