| 1 | #include "lbmread.hpp" |
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| 2 | #include <stdio.h> |
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| 3 | #include <stdlib.h> |
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| 4 | #include "system.h" |
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| 5 | |
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| 6 | |
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| 7 | |
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| 8 | image *read_lbm(char *filename, palette *&pal) |
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| 9 | { |
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| 10 | FILE *fp=fopen("/cam/amur/set/city/city1.lbm","rb"); |
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| 11 | char type[4]; |
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| 12 | image *im=NULL; |
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| 13 | fread(type,1,4,fp); |
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| 14 | if (memcmp(type,"FORM",4)) |
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| 15 | { |
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| 16 | set_error(imNOT_SUPPORTED); |
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| 17 | fclose(fp); |
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| 18 | return NULL; |
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| 19 | } |
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| 20 | else |
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| 21 | { |
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| 22 | int32_t size=read_other_uint32(fp); |
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| 23 | fread(type,1,4,fp); |
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| 24 | if (memcmp(type,"PBM ",4)) |
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| 25 | { |
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| 26 | set_error(imNOT_SUPPORTED); |
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| 27 | fclose(fp); |
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| 28 | return NULL; |
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| 29 | } |
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| 30 | else |
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| 31 | { |
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| 32 | int32_t ssize; |
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| 33 | char stype[4]; |
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| 34 | int16_t w=0,h=0,x,y,tcolor,pagew,pageh; |
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| 35 | char planes,masking,compr=0,padl,xa,ya; |
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| 36 | |
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| 37 | while (ftell(fp)+4<size) |
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| 38 | { |
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| 39 | fread(stype,1,4,fp); |
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| 40 | ssize=read_other_uint32(fp); |
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| 41 | if (ssize &1) ssize++; // specs say all chunks are padded by 2 |
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| 42 | if (!memcmp(stype,"BMHD",4)) |
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| 43 | { |
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| 44 | w=read_other_uint16(fp); |
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| 45 | h=read_other_uint16(fp); |
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| 46 | x=read_other_uint16(fp); |
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| 47 | y=read_other_uint16(fp); |
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| 48 | planes=fgetc(fp); |
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| 49 | masking=fgetc(fp); |
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| 50 | compr=fgetc(fp); |
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| 51 | padl=fgetc(fp); |
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| 52 | tcolor=read_other_uint16(fp); |
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| 53 | xa=fgetc(fp); |
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| 54 | ya=fgetc(fp); |
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| 55 | pagew=read_other_uint16(fp); |
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| 56 | pageh=read_other_uint16(fp); |
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| 57 | } else if (!memcmp(stype,"CMAP",4)) |
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| 58 | { |
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| 59 | pal=new palette(256); |
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| 60 | fread(pal->addr(),1,768,fp); |
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| 61 | } else if (!memcmp(stype,"BODY",4) && w && h) // make sure we read a BHMD before |
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| 62 | { |
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| 63 | if (im) delete im; // shouldn't be two BODY's butjust in case... |
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| 64 | im=new image(w,h); |
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| 65 | int y; |
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| 66 | if (!compr) |
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| 67 | { |
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| 68 | for (y=0;y<h;h++) |
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| 69 | fread(im->scan_line(y),1,w,fp); |
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| 70 | } else |
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| 71 | { |
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| 72 | for (y=0;y<h;y++) |
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| 73 | { |
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| 74 | int c,i,n=0; |
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| 75 | unsigned char *sl=im->scan_line(y); |
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| 76 | do |
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| 77 | { |
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| 78 | c=fgetc(fp)&0xff; |
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| 79 | if (c&0x80) |
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| 80 | { |
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| 81 | if (c!=0x80) |
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| 82 | { |
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| 83 | i=((~c)&0xff)+2; |
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| 84 | c=fgetc(fp); |
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| 85 | while (i--) sl[n++]=c; |
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| 86 | } |
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| 87 | } |
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| 88 | else |
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| 89 | { |
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| 90 | i=c+1; |
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| 91 | while (i--) sl[n++]=fgetc(fp); |
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| 92 | } |
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| 93 | } while (n<w); |
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| 94 | } |
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| 95 | } |
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| 96 | } |
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| 97 | else |
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| 98 | fseek(fp,ssize,SEEK_CUR); |
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| 99 | } |
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| 100 | } |
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| 101 | } |
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| 102 | fclose(fp); |
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| 103 | if (!im) set_error(imFILE_CORRUPTED); |
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| 104 | return im; |
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| 105 | } |
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| 106 | |
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| 107 | |
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