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Fix bad pixels if DNG opcode FixBadPixelsConstant == 0, fixes #4471

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heckflosse 2018-03-27 15:29:53 +02:00
parent 100da304b8
commit 54a0ccf156
1 changed files with 20 additions and 0 deletions
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20
rtengine/dcraw.cc
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@ -6386,6 +6386,26 @@ guess_cfa_pc:
((int *)mask)[i] = getint(type);
black = 0;
break;
case 51008: /* OpcodeList1 */
{
unsigned oldOrder = order;
order = 0x4d4d; // always big endian per definition in https://www.adobe.com/content/dam/acom/en/products/photoshop/pdfs/dng_spec_1.4.0.0.pdf chapter 7
unsigned ntags = get4(); // read the number of opcodes
while (ntags--) {
unsigned opcode = get4();
fseek (ifp, 8, SEEK_CUR); // skip 8 bytes as they don't interest us currently
if (opcode == 4) { // FixBadPixelsConstant
fseek (ifp, 4, SEEK_CUR); // skip 4 bytes as we know that the opcode 4 takes 4 byte
if(get4() == 0) { // if raw 0 values should be treated as bad pixels, set zero_is_bad to true (1). That's the only value currently supported by rt
zero_is_bad = 1;
}
} else {
fseek (ifp, get4(), SEEK_CUR);
}
}
order = oldOrder;
break;
}
case 51009: /* OpcodeList2 */
meta_offset = ftell(ifp);
break;