/* Check if the decoder can decode the image from this camera */
/* A RawDecoderException will be thrown if the camera isn't supported */
/* Unknown cameras does NOT generate any specific feedback */
/* This function must be overridden by actual decoders */
void decodeUncompressed(ref TiffIFD rawIFD, BitOrder order)
{
UInt32 nslices = rawIFD.getEntry(STRIPOFFSETS).count;
TiffEntry* offsets = rawIFD.getEntry(STRIPOFFSETS);
TiffEntry* counts = rawIFD.getEntry(STRIPBYTECOUNTS);
UInt32 yPerSlice = rawIFD.getEntry(ROWSPERSTRIP).getInt();
UInt32 width = rawIFD.getEntry(IMAGEWIDTH).getInt();
UInt32 height = rawIFD.getEntry(IMAGELENGTH).getInt();
UInt32 bitPerPixel = rawIFD.getEntry(BITSPERSAMPLE).getInt();
vector<RawSlice> slices;
UInt32 offY = 0;
for (UInt32 s = 0; s < nslices; s++)
{
RawSlice slice;
slice.offset = offsets.getInt(s);
slice.count = counts.getInt(s);
if (offY + yPerSlice > height)
slice.h = height - offY;
else
slice.h = yPerSlice;
offY += yPerSlice;
if (mFile.isValid(slice.offset, slice.count)) // Only decode if size is valid
slices.push_back(slice);
}
if (0 == slices.size())
ThrowRDE("RAW Decoder: No valid slices found. File probably truncated.");
mRaw.dim = iPoint2D(width, offY);
mRaw.createData();
mRaw.whitePoint = (1 << bitPerPixel) - 1;
offY = 0;
for (UInt32 i = 0; i < slices.size(); i++)
{
RawSlice slice = slices[i];
ByteStream in(mFile, slice.offset, slice.count);
iPoint2D size(width, slice.h);
iPoint2D pos(0, offY);
bitPerPixel = (int)((UInt64)((UInt64)slice.count * 8u) / (slice.h * width));
try
{
readUncompressedRaw(in, size, pos, width * bitPerPixel / 8, bitPerPixel, order);
}
catch (RawDecoderException &e) {
if (i > 0)
mRaw.setError(e.what());
else
throw;
} catch (IOException &e) {
TiffIFD(ref FileMap f, UInt32 offset, UInt32 _depth)
{
TIFF_DEPTH(_depth);
mFile = f;
ushort[] entries;
entries = *(ushort*)f.getData(offset, 2); // Directory entries in this IFD
for (UInt32 i = 0; i < entries; i++)
{
int entry_offset = (int)(offset + 2 + i * 12);
// If the space for the entry is no longer valid stop reading any more as
// the file is broken or truncated
if (!mFile.isValid(entry_offset, 12))
break;
TiffEntry t = null;
try
{
t = new TiffEntry(f, entry_offset, offset);
}
catch (IOException)
{ // Ignore unparsable entry
continue;
}
switch (t.tag)
{
case DNGPRIVATEDATA:
{
try
{
TiffIFD* maker_ifd = parseDngPrivateData(t);
mSubIFD.push_back(maker_ifd);
delete(t);
}
catch (TiffParserException)
{ // Unparsable private data are added as entries
mEntry[t.tag] = t;
}
catch (IOException)
{ // Unparsable private data are added as entries
mEntry[t.tag] = t;
}
}
break;
case MAKERNOTE:
case MAKERNOTE_ALT:
{
try
{
mSubIFD.push_back(parseMakerNote(f, t.getDataOffset(), endian));
delete(t);
}
catch (TiffParserException)
{ // Unparsable makernotes are added as entries
mEntry[t.tag] = t;
}
catch (IOException)
{ // Unparsable makernotes are added as entries
mEntry[t.tag] = t;
}
}
break;
case FUJI_RAW_IFD:
if (t.type == 0xd) // FUJI - correct type
t.type = TIFF_LONG;
case SUBIFDS:
case EXIFIFDPOINTER:
try
{
for (UInt32 j = 0; j < t.count; j++)
{
mSubIFD.push_back(new TiffIFD(f, t.getInt(j), depth));
}
delete(t);
}
catch (TiffParserException)
{ // Unparsable subifds are added as entries
mEntry[t.tag] = t;
}
catch (IOException)
{ // Unparsable subifds are added as entries
mEntry[t.tag] = t;
}
break;
default:
mEntry[t.tag] = t;
}
}
nextIFD = *(align1_int*)f.getData(offset + 2 + entries * 12, 4);
}
