Last change
on this file since 608 was
49,
checked in by Sam Hocevar, 15 years ago
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- Imported original public domain release, for future reference.
|
-
Property svn:keywords set to
Id
|
File size:
2.0 KB
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Rev | Line | |
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[49] | 1 | #include "image.hpp" |
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| 2 | #include "specs.hpp" |
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| 3 | |
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| 4 | image *load_targa(char *filename, palette *pal) |
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| 5 | { |
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| 6 | bFILE *fp=open_file(filename,"rb"); |
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| 7 | if (!fp) |
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| 8 | return 0; |
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| 9 | |
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| 10 | if (fp->open_failure()) |
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| 11 | { |
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| 12 | delete fp; |
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| 13 | return 0; |
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| 14 | } |
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| 15 | |
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| 16 | unsigned char id,color_map,im_type; |
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| 17 | |
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| 18 | id=fp->read_byte(); |
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| 19 | color_map=fp->read_byte(); |
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| 20 | im_type=fp->read_byte(); |
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| 21 | |
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| 22 | if (color_map!=0) |
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| 23 | { |
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| 24 | delete fp; |
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| 25 | return 0; |
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| 26 | } |
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| 27 | |
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| 28 | if (!(im_type==2 || im_type==10)) |
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| 29 | { |
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| 30 | delete fp; |
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| 31 | return 0; |
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| 32 | } |
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| 33 | |
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| 34 | fp->read_short(); |
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| 35 | fp->read_short(); |
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| 36 | fp->read_byte(); |
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| 37 | |
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| 38 | fp->read_short(); |
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| 39 | fp->read_short(); |
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| 40 | |
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| 41 | |
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| 42 | int w=fp->read_short(); |
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| 43 | int h=fp->read_short(); |
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| 44 | unsigned char bpp=fp->read_byte(); |
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| 45 | unsigned char im_des=fp->read_byte(); |
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| 46 | |
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| 47 | if (bpp!=32) |
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| 48 | { |
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| 49 | delete fp; |
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| 50 | return 0; |
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| 51 | } |
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| 52 | |
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| 53 | image *im=new image(w,h); |
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| 54 | |
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| 55 | int x,y; |
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| 56 | unsigned char ctrl; |
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| 57 | unsigned char bgra[4],*sl,c,lr,lg,lb,ll=0,lc; |
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| 58 | |
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| 59 | |
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| 60 | |
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| 61 | |
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| 62 | if (im_type==10) |
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| 63 | { |
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| 64 | for (y=0;y<h;y++) |
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| 65 | { |
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| 66 | sl=im->scan_line(h-y-1); |
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| 67 | |
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| 68 | for (x=0;x<w;) |
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| 69 | { |
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| 70 | ctrl=fp->read_byte(); |
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| 71 | if (ctrl&0x80) |
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| 72 | { |
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| 73 | fp->read(bgra,4); |
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| 74 | ctrl&=(~0x80); |
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| 75 | ctrl++; |
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| 76 | if (bgra[3]) |
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| 77 | { |
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| 78 | if (ll && lr==bgra[2] && lg==bgra[1] && lb==bgra[0]) |
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| 79 | c=lc; |
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| 80 | else |
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| 81 | { |
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| 82 | c=pal->find_closest_non0(bgra[2],bgra[1],bgra[0]); |
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| 83 | lr=bgra[2]; |
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| 84 | lg=bgra[1]; |
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| 85 | lb=bgra[0]; |
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| 86 | lc=c; |
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| 87 | ll=1; |
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| 88 | } |
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| 89 | |
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| 90 | } |
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| 91 | else c=0; |
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| 92 | |
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| 93 | while (ctrl--) |
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| 94 | { |
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| 95 | *sl=c; |
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| 96 | sl++; |
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| 97 | x++; |
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| 98 | } |
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| 99 | } else |
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| 100 | { |
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| 101 | ctrl++; |
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| 102 | while (ctrl--) |
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| 103 | { |
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| 104 | fp->read(bgra,4); |
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| 105 | if (bgra[3]) |
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| 106 | { |
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| 107 | c=pal->find_closest_non0(bgra[2],bgra[1],bgra[0]); |
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| 108 | } |
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| 109 | else c=0; |
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| 110 | *sl=c; |
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| 111 | sl++; |
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| 112 | x++; |
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| 113 | } |
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| 114 | } |
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| 115 | } |
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| 116 | } |
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| 117 | } |
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| 118 | |
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| 119 | |
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| 120 | |
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| 121 | delete fp; |
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| 122 | return im; |
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| 123 | } |
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