void dng_memory_stream::DoRead (void *data,
uint32 count,
uint64 offset)
{
if (offset + count > fMemoryStreamLength)
{
ThrowEndOfFile ();
}
uint64 baseOffset = offset;
while (count)
{
uint32 pageIndex = (uint32) (offset / fPageSize);
uint32 pageOffset = (uint32) (offset % fPageSize);
uint32 blockCount = Min_uint32 (fPageSize - pageOffset, count);
const uint8 *sPtr = fPageList [pageIndex]->Buffer_uint8 () +
pageOffset;
uint8 *dPtr = ((uint8 *) data) + (uint32) (offset - baseOffset);
DoCopyBytes (sPtr, dPtr, blockCount);
offset += blockCount;
count -= blockCount;
}
}
void dng_image::Put (const dng_pixel_buffer &buffer)
{
// Move the overlapping pixels.
dng_rect overlap = buffer.fArea & fBounds;
if (overlap.NotEmpty ())
{
dng_pixel_buffer temp (buffer);
temp.fArea = overlap;
temp.fData = (void *) buffer.ConstPixel (overlap.t,
overlap.l,
buffer.fPlane);
// Move the overlapping planes.
if (temp.fPlane < Planes ())
{
temp.fPlanes = Min_uint32 (temp.fPlanes,
Planes () - temp.fPlane);
DoPut (temp);
}
}
}
void dng_memory_stream::DoWrite (const void *data,
uint32 count,
uint64 offset)
{
DoSetLength (Max_uint64 (fMemoryStreamLength,
offset + count));
uint64 baseOffset = offset;
while (count)
{
uint32 pageIndex = (uint32) (offset / fPageSize);
uint32 pageOffset = (uint32) (offset % fPageSize);
uint32 blockCount = Min_uint32 (fPageSize - pageOffset, count);
const uint8 *sPtr = ((const uint8 *) data) + (uint32) (offset - baseOffset);
uint8 *dPtr = fPageList [pageIndex]->Buffer_uint8 () +
pageOffset;
DoCopyBytes (sPtr, dPtr, blockCount);
offset += blockCount;
count -= blockCount;
}
}
void dng_opcode_GainMap::ProcessArea (dng_negative & /* negative */,
uint32 /* threadIndex */,
dng_pixel_buffer &buffer,
const dng_rect &dstArea,
const dng_rect &imageBounds)
{
dng_rect overlap = fAreaSpec.Overlap (dstArea);
if (overlap.NotEmpty ())
{
uint32 cols = overlap.W ();
uint32 colPitch = fAreaSpec.ColPitch ();
for (uint32 plane = fAreaSpec.Plane ();
plane < fAreaSpec.Plane () + fAreaSpec.Planes () &&
plane < buffer.Planes ();
plane++)
{
uint32 mapPlane = Min_uint32 (plane, fGainMap->Planes () - 1);
for (int32 row = overlap.t; row < overlap.b; row += fAreaSpec.RowPitch ())
{
real32 *dPtr = buffer.DirtyPixel_real32 (row, overlap.l, plane);
dng_gain_map_interpolator interp (*fGainMap,
imageBounds,
row,
overlap.l,
mapPlane);
for (uint32 col = 0; col < cols; col += colPitch)
{
real32 gain = interp.Interpolate ();
dPtr [col] = Min_real32 (dPtr [col] * gain, 1.0f);
for (uint32 j = 0; j < colPitch; j++)
{
interp.Increment ();
}
}
}
}
}
}
void dng_info::ParseDNGPrivateData (dng_host &host,
dng_stream &stream)
{
if (fShared->fDNGPrivateDataCount < 2)
{
return;
}
// DNG private data should always start with a null-terminated
// company name, to define the format of the private data.
dng_string privateName;
{
char buffer [64];
stream.SetReadPosition (fShared->fDNGPrivateDataOffset);
uint32 readLength = Min_uint32 (fShared->fDNGPrivateDataCount,
sizeof (buffer) - 1);
stream.Get (buffer, readLength);
buffer [readLength] = 0;
privateName.Set (buffer);
}
// Pentax is storing their MakerNote in the DNGPrivateData data.
if (privateName.StartsWith ("PENTAX" ) ||
privateName.StartsWith ("SAMSUNG"))
{
#if qDNGValidate
if (gVerbose)
{
printf ("Parsing Pentax/Samsung DNGPrivateData\n\n");
}
#endif
stream.SetReadPosition (fShared->fDNGPrivateDataOffset + 8);
bool bigEndian = stream.BigEndian ();
uint16 endianMark = stream.Get_uint16 ();
if (endianMark == byteOrderMM)
{
bigEndian = true;
}
else if (endianMark == byteOrderII)
{
bigEndian = false;
}
TempBigEndian temp_endian (stream, bigEndian);
ParseMakerNoteIFD (host,
stream,
fShared->fDNGPrivateDataCount - 10,
fShared->fDNGPrivateDataOffset + 10,
fShared->fDNGPrivateDataOffset,
fShared->fDNGPrivateDataOffset,
fShared->fDNGPrivateDataOffset + fShared->fDNGPrivateDataCount,
tcPentaxMakerNote);
return;
}
// Stop parsing if this is not an Adobe format block.
if (!privateName.Matches ("Adobe"))
{
return;
}
TempBigEndian temp_order (stream);
uint32 section_offset = 6;
while (section_offset + 8 < fShared->fDNGPrivateDataCount)
{
stream.SetReadPosition (fShared->fDNGPrivateDataOffset + section_offset);
uint32 section_key = stream.Get_uint32 ();
uint32 section_count = stream.Get_uint32 ();
if (section_key == DNG_CHAR4 ('M','a','k','N') && section_count > 6)
{
#if qDNGValidate
if (gVerbose)
{
printf ("Found MakerNote inside DNGPrivateData\n\n");
}
#endif
uint16 order_mark = stream.Get_uint16 ();
uint64 old_offset = stream.Get_uint32 ();
uint32 tempSize = section_count - 6;
AutoPtr<dng_memory_block> tempBlock (host.Allocate (tempSize));
uint64 positionInOriginalFile = stream.PositionInOriginalFile();
stream.Get (tempBlock->Buffer (), tempSize);
dng_stream tempStream (tempBlock->Buffer (),
tempSize,
positionInOriginalFile);
tempStream.SetBigEndian (order_mark == byteOrderMM);
ParseMakerNote (host,
tempStream,
tempSize,
0,
0 - old_offset,
0,
tempSize);
}
else if (section_key == DNG_CHAR4 ('S','R','2',' ') && section_count > 6)
{
#if qDNGValidate
if (gVerbose)
{
printf ("Found Sony private data inside DNGPrivateData\n\n");
}
#endif
uint16 order_mark = stream.Get_uint16 ();
uint64 old_offset = stream.Get_uint32 ();
uint64 new_offset = fShared->fDNGPrivateDataOffset + section_offset + 14;
TempBigEndian sr2_order (stream, order_mark == byteOrderMM);
ParseSonyPrivateData (host,
stream,
section_count - 6,
old_offset,
new_offset);
}
else if (section_key == DNG_CHAR4 ('R','A','F',' ') && section_count > 4)
{
#if qDNGValidate
if (gVerbose)
{
printf ("Found Fuji RAF tags inside DNGPrivateData\n\n");
}
#endif
uint16 order_mark = stream.Get_uint16 ();
uint32 tagCount = stream.Get_uint32 ();
uint64 tagOffset = stream.Position ();
if (tagCount)
{
TempBigEndian raf_order (stream, order_mark == byteOrderMM);
ParseTag (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
tcFujiRAF,
tcFujiHeader,
ttUndefined,
tagCount,
tagOffset,
0);
stream.SetReadPosition (tagOffset + tagCount);
}
tagCount = stream.Get_uint32 ();
tagOffset = stream.Position ();
if (tagCount)
{
TempBigEndian raf_order (stream, order_mark == byteOrderMM);
ParseTag (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
tcFujiRAF,
tcFujiRawInfo1,
ttUndefined,
tagCount,
tagOffset,
0);
stream.SetReadPosition (tagOffset + tagCount);
}
tagCount = stream.Get_uint32 ();
tagOffset = stream.Position ();
if (tagCount)
{
TempBigEndian raf_order (stream, order_mark == byteOrderMM);
ParseTag (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
tcFujiRAF,
tcFujiRawInfo2,
ttUndefined,
tagCount,
tagOffset,
0);
stream.SetReadPosition (tagOffset + tagCount);
}
}
else if (section_key == DNG_CHAR4 ('C','n','t','x') && section_count > 4)
{
#if qDNGValidate
if (gVerbose)
{
printf ("Found Contax Raw header inside DNGPrivateData\n\n");
}
#endif
uint16 order_mark = stream.Get_uint16 ();
uint32 tagCount = stream.Get_uint32 ();
uint64 tagOffset = stream.Position ();
if (tagCount)
{
TempBigEndian contax_order (stream, order_mark == byteOrderMM);
ParseTag (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
tcContaxRAW,
tcContaxHeader,
ttUndefined,
tagCount,
tagOffset,
0);
}
}
else if (section_key == DNG_CHAR4 ('C','R','W',' ') && section_count > 4)
{
#if qDNGValidate
if (gVerbose)
{
printf ("Found Canon CRW tags inside DNGPrivateData\n\n");
}
#endif
uint16 order_mark = stream.Get_uint16 ();
uint32 entries = stream.Get_uint16 ();
uint64 crwTagStart = stream.Position ();
for (uint32 parsePass = 1; parsePass <= 2; parsePass++)
{
stream.SetReadPosition (crwTagStart);
for (uint32 index = 0; index < entries; index++)
{
uint32 tagCode = stream.Get_uint16 ();
uint32 tagCount = stream.Get_uint32 ();
uint64 tagOffset = stream.Position ();
// We need to grab the model id tag first, and then all the
// other tags.
if ((parsePass == 1) == (tagCode == 0x5834))
{
TempBigEndian tag_order (stream, order_mark == byteOrderMM);
ParseTag (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
tcCanonCRW,
tagCode,
ttUndefined,
tagCount,
tagOffset,
0);
}
stream.SetReadPosition (tagOffset + tagCount);
}
}
}
else if (section_count > 4)
{
uint32 parentCode = 0;
bool code32 = false;
bool hasType = true;
switch (section_key)
{
case DNG_CHAR4 ('M','R','W',' '):
{
parentCode = tcMinoltaMRW;
code32 = true;
hasType = false;
break;
}
case DNG_CHAR4 ('P','a','n','o'):
{
parentCode = tcPanasonicRAW;
break;
}
case DNG_CHAR4 ('L','e','a','f'):
{
parentCode = tcLeafMOS;
break;
}
case DNG_CHAR4 ('K','o','d','a'):
{
parentCode = tcKodakDCRPrivateIFD;
break;
}
case DNG_CHAR4 ('K','D','C',' '):
{
parentCode = tcKodakKDCPrivateIFD;
break;
}
default:
break;
}
if (parentCode)
{
#if qDNGValidate
if (gVerbose)
{
printf ("Found %s tags inside DNGPrivateData\n\n",
LookupParentCode (parentCode));
}
#endif
uint16 order_mark = stream.Get_uint16 ();
uint32 entries = stream.Get_uint16 ();
for (uint32 index = 0; index < entries; index++)
{
uint32 tagCode = code32 ? stream.Get_uint32 ()
: stream.Get_uint16 ();
uint32 tagType = hasType ? stream.Get_uint16 ()
: ttUndefined;
uint32 tagCount = stream.Get_uint32 ();
uint32 tagSize = tagCount * TagTypeSize (tagType);
uint64 tagOffset = stream.Position ();
TempBigEndian tag_order (stream, order_mark == byteOrderMM);
ParseTag (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
parentCode,
tagCode,
tagType,
tagCount,
tagOffset,
0);
stream.SetReadPosition (tagOffset + tagSize);
}
}
}
section_offset += 8 + section_count;
if (section_offset & 1)
{
section_offset++;
}
}
}
void dng_host::ValidateSizes ()
{
// The maximum size limits the other two sizes.
if (MaximumSize ())
{
SetMinimumSize (Min_uint32 (MinimumSize (), MaximumSize ()));
SetPreferredSize (Min_uint32 (PreferredSize (), MaximumSize ()));
}
// If we have a preferred size, it limits the minimum size.
if (PreferredSize ())
{
SetMinimumSize (Min_uint32 (MinimumSize (), PreferredSize ()));
}
// Else find default value for preferred size.
else
{
// If preferred size is zero, then we want the maximim
// size image.
if (MaximumSize ())
{
SetPreferredSize (MaximumSize ());
}
}
// If we don't have a minimum size, find default.
if (!MinimumSize ())
{
// A common size for embedded thumbnails is 120 by 160 pixels,
// So allow 120 by 160 pixels to be used for thumbnails when the
// preferred size is 256 pixel.
if (PreferredSize () >= 160 && PreferredSize () <= 256)
{
SetMinimumSize (160);
}
// Many sensors are near a multiple of 1024 pixels in size, but after
// the default crop, they are a just under. We can get an extra factor
// of size reduction if we allow a slight undershoot in the final size
// when computing large previews.
else if (PreferredSize () >= 490 && PreferredSize () <= 512)
{
SetMinimumSize (490);
}
else if (PreferredSize () >= 980 && PreferredSize () <= 1024)
{
SetMinimumSize (980);
}
else if (PreferredSize () >= 1470 && PreferredSize () <= 1536)
{
SetMinimumSize (1470);
}
else if (PreferredSize () >= 1960 && PreferredSize () <= 2048)
{
SetMinimumSize (1960);
}
// Else minimum size is same as preferred size.
else
{
SetMinimumSize (PreferredSize ());
}
}
}
dng_point dng_area_task::FindTileSize (const dng_rect &area) const
{
dng_rect repeatingTile1 = RepeatingTile1 ();
dng_rect repeatingTile2 = RepeatingTile2 ();
dng_rect repeatingTile3 = RepeatingTile3 ();
if (repeatingTile1.IsEmpty ())
{
repeatingTile1 = area;
}
if (repeatingTile2.IsEmpty ())
{
repeatingTile2 = area;
}
if (repeatingTile3.IsEmpty ())
{
repeatingTile3 = area;
}
uint32 repeatV = Min_uint32 (Min_uint32 (repeatingTile1.H (),
repeatingTile2.H ()),
repeatingTile3.H ());
uint32 repeatH = Min_uint32 (Min_uint32 (repeatingTile1.W (),
repeatingTile2.W ()),
repeatingTile3.W ());
dng_point maxTileSize = MaxTileSize ();
dng_point tileSize (maxTileSize);
tileSize.v = Min_int32 (tileSize.v, repeatV);
tileSize.h = Min_int32 (tileSize.h, repeatH);
uint32 countV = (repeatV + tileSize.v - 1) / tileSize.v;
uint32 countH = (repeatH + tileSize.h - 1) / tileSize.h;
tileSize.v = (repeatV + countV - 1) / countV;
tileSize.h = (repeatH + countH - 1) / countH;
dng_point unitCell = UnitCell ();
tileSize.v = ((tileSize.v + unitCell.v - 1) / unitCell.v) * unitCell.v;
tileSize.h = ((tileSize.h + unitCell.h - 1) / unitCell.h) * unitCell.h;
if (tileSize.v > maxTileSize.v)
{
tileSize.v = (maxTileSize.v / unitCell.v) * unitCell.v;
}
if (tileSize.h > maxTileSize.h)
{
tileSize.h = (maxTileSize.h / unitCell.h) * unitCell.h;
}
return tileSize;
}
