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/*
RawSpeed - RAW file decoder.
Copyright (C) 2009-2014 Klaus Post
Copyright (C) 2015 Pedro Côrte-Real
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "decoders/PefDecoder.h"
#include "common/Common.h" // for uint32, BitOrder_MSB
#include "common/Point.h" // for iPoint2D
#include "decoders/RawDecoderException.h" // for ThrowRDE
#include "decompressors/PentaxDecompressor.h" // for PentaxDecompressor
#include "io/ByteStream.h" // for ByteStream
#include "metadata/ColorFilterArray.h" // for CFA_GREEN, CFA_BLUE
#include "tiff/TiffEntry.h" // for TiffEntry, TIFF_UNDEFINED
#include "tiff/TiffIFD.h" // for TiffRootIFD, TiffIFD
#include "tiff/TiffTag.h" // for TiffTag, ISOSPEEDRATINGS
#include <array> // for array
#include <memory> // for unique_ptr
#include <string> // for operator==, string
namespace rawspeed {
bool PefDecoder::isAppropriateDecoder(const TiffRootIFD* rootIFD,
const Buffer* file) {
const auto id = rootIFD->getID();
const std::string& make = id.make;
// FIXME: magic
return make == "PENTAX Corporation" ||
make == "RICOH IMAGING COMPANY, LTD." || make == "PENTAX";
}
RawImage PefDecoder::decodeRawInternal() {
auto raw = mRootIFD->getIFDWithTag(STRIPOFFSETS);
int compression = raw->getEntry(COMPRESSION)->getU32();
if (1 == compression || compression == 32773) {
decodeUncompressed(raw, BitOrder_MSB);
return mRaw;
}
if (65535 != compression)
ThrowRDE("Unsupported compression");
TiffEntry *offsets = raw->getEntry(STRIPOFFSETS);
TiffEntry *counts = raw->getEntry(STRIPBYTECOUNTS);
if (offsets->count != 1) {
ThrowRDE("Multiple Strips found: %u", offsets->count);
}
if (counts->count != offsets->count) {
ThrowRDE(
"Byte count number does not match strip size: count:%u, strips:%u ",
counts->count, offsets->count);
}
ByteStream bs(mFile, offsets->getU32(), counts->getU32());
uint32 width = raw->getEntry(IMAGEWIDTH)->getU32();
uint32 height = raw->getEntry(IMAGELENGTH)->getU32();
mRaw->dim = iPoint2D(width, height);
ByteStream* metaData = nullptr;
ByteStream stream;
if (getRootIFD()->hasEntryRecursive(static_cast<TiffTag>(0x220))) {
/* Attempt to read huffman table, if found in makernote */
TiffEntry* t = getRootIFD()->getEntryRecursive(static_cast<TiffTag>(0x220));
if (t->type != TIFF_UNDEFINED)
ThrowRDE("Unknown Huffman table type.");
stream = t->getData();
metaData = &stream;
}
PentaxDecompressor p(mRaw, metaData);
mRaw->createData();
p.decompress(bs);
return mRaw;
}
void PefDecoder::decodeMetaDataInternal(const CameraMetaData* meta) {
int iso = 0;
mRaw->cfa.setCFA(iPoint2D(2,2), CFA_RED, CFA_GREEN, CFA_GREEN, CFA_BLUE);
if (mRootIFD->hasEntryRecursive(ISOSPEEDRATINGS))
iso = mRootIFD->getEntryRecursive(ISOSPEEDRATINGS)->getU32();
setMetaData(meta, "", iso);
// Read black level
if (mRootIFD->hasEntryRecursive(static_cast<TiffTag>(0x200))) {
TiffEntry* black = mRootIFD->getEntryRecursive(static_cast<TiffTag>(0x200));
if (black->count == 4) {
for (int i = 0; i < 4; i++)
mRaw->blackLevelSeparate[i] = black->getU32(i);
}
}
// Set the whitebalance
if (mRootIFD->hasEntryRecursive(static_cast<TiffTag>(0x0201))) {
TiffEntry* wb = mRootIFD->getEntryRecursive(static_cast<TiffTag>(0x0201));
if (wb->count == 4) {
mRaw->metadata.wbCoeffs[0] = wb->getU32(0);
mRaw->metadata.wbCoeffs[1] = wb->getU32(1);
mRaw->metadata.wbCoeffs[2] = wb->getU32(3);
}
}
}
} // namespace rawspeed
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