void setBlack(IFD raw) { if (raw.hasEntry(TagType.MASKEDAREAS)) { if (decodeMaskedAreas(raw)) { return; } } if (raw.getEntry(TagType.BLACKLEVEL) != null) { decodeBlackLevels(raw); } }
protected override Thumbnail decodeThumbInternal() { //find the preview IFD (usually the first if any) try { List <IFD> potential = mRootIFD.getIFDsWithTag(TagType.NEWSUBFILETYPE); if (potential != null || potential.Count != 0) { IFD thumbIFD = null; for (int i = 0; i < potential.Count; i++) { var subFile = potential[i].getEntry(TagType.NEWSUBFILETYPE); if (subFile.getInt() == 1) { thumbIFD = potential[i]; break; } } if (thumbIFD != null) { //there is a thumbnail UInt32 sample_format = 1; UInt32 bps = thumbIFD.getEntry(TagType.BITSPERSAMPLE).getUInt(); iPoint2D dim; if (thumbIFD.hasEntry(TagType.SAMPLEFORMAT)) { sample_format = thumbIFD.getEntry(TagType.SAMPLEFORMAT).getUInt(); } try { dim = new iPoint2D() { x = thumbIFD.getEntry(TagType.IMAGEWIDTH).getInt(), y = thumbIFD.getEntry(TagType.IMAGELENGTH).getInt() }; } catch (TiffParserException) { throw new RawDecoderException("DNG Decoder: Could not read basic image information."); } int compression = thumbIFD.getEntry(TagType.COMPRESSION).getShort(); // Now load the image if (compression == 1) { // Uncompressed. UInt32 cpp = thumbIFD.getEntry(TagType.SAMPLESPERPIXEL).getUInt(); if (cpp > 4) { throw new RawDecoderException("DNG Decoder: More than 4 samples per pixel is not supported."); } Tag offsets = thumbIFD.getEntry(TagType.STRIPOFFSETS); Tag counts = thumbIFD.getEntry(TagType.STRIPBYTECOUNTS); UInt32 yPerSlice = thumbIFD.getEntry(TagType.ROWSPERSTRIP).getUInt(); UInt32 width = thumbIFD.getEntry(TagType.IMAGEWIDTH).getUInt(); UInt32 height = thumbIFD.getEntry(TagType.IMAGELENGTH).getUInt(); if (counts.dataCount != offsets.dataCount) { throw new RawDecoderException("DNG Decoder: Byte count number does not match strip size: count:" + counts.dataCount + ", strips:" + offsets.dataCount); } UInt32 offY = 0; List <DngStrip> slices = new List <DngStrip>(); for (UInt32 s = 0; s < offsets.dataCount; s++) { DngStrip slice = new DngStrip(); slice.offset = offsets.getUInt(s); slice.count = counts.getUInt(s); slice.offsetY = offY; 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.Add(slice); } } for (int i = 0; i < slices.Count; i++) { DngStrip slice = slices[i]; TIFFBinaryReader input = new TIFFBinaryReader(mFile.BaseStream, slice.offset, (uint)mFile.BaseStream.Length); iPoint2D size = new iPoint2D((int)width, (int)slice.h); iPoint2D pos = new iPoint2D(0, (int)slice.offsetY); bool big_endian = (thumbIFD.endian == Endianness.big); // DNG spec says that if not 8 or 16 bit/sample, always use big endian if (bps != 8 && bps != 16) { big_endian = true; } try { // readUncompressedRaw(ref input, size, pos, (int)(mRaw.cpp * width * bps / 8), (int)bps, big_endian ? BitOrder.Jpeg : BitOrder.Plain); } catch (IOException ex) { throw new RawDecoderException("DNG decoder: IO error occurred in first slice, unable to decode more. Error is: " + ex.Message); } } } else if (compression == 7 || compression == 0x884c) { /* * // Let's try loading it as tiles instead * * uint cpp = (thumbIFD.getEntry(TagType.SAMPLESPERPIXEL).getUInt()); * * if (sample_format != 1) * throw new RawDecoderException("DNG Decoder: Only 16 bit unsigned data supported for compressed data."); * * DngDecoderSlices slices = new DngDecoderSlices(mFile, mRaw, compression); * if (thumbIFD.hasEntry(TagType.TILEOFFSETS)) * { * UInt32 tilew = thumbIFD.getEntry(TagType.TILEWIDTH).getUInt(); * UInt32 tileh = thumbIFD.getEntry(TagType.TILELENGTH).getUInt(); * if (tilew == 0 || tileh == 0) * throw new RawDecoderException("DNG Decoder: Invalid tile size"); * * UInt32 tilesX = (uint)(mRaw.dim.x + tilew - 1) / tilew; * UInt32 tilesY = (uint)(mRaw.dim.y + tileh - 1) / tileh; * UInt32 nTiles = tilesX * tilesY; * * Tag offsets = thumbIFD.getEntry(TagType.TILEOFFSETS); * Tag counts = thumbIFD.getEntry(TagType.TILEBYTECOUNTS); * if (offsets.dataCount != counts.dataCount || offsets.dataCount != nTiles) * throw new RawDecoderException("DNG Decoder: Tile count mismatch: offsets:" + offsets.dataCount + " count:" + counts.dataCount + ", calculated:" + nTiles); * * slices.mFixLjpeg = mFixLjpeg; * * for (UInt32 y = 0; y < tilesY; y++) * { * for (UInt32 x = 0; x < tilesX; x++) * { * DngSliceElement e = new DngSliceElement(offsets.getUInt(x + y * tilesX), counts.getUInt(x + y * tilesX), tilew * x, tileh * y); * e.mUseBigtable = tilew * tileh > 1024 * 1024; * slices.addSlice(e); * } * } * } * else * { // Strips * Tag offsets = thumbIFD.getEntry(TagType.STRIPOFFSETS); * Tag counts = thumbIFD.getEntry(TagType.STRIPBYTECOUNTS); * * UInt32 yPerSlice = thumbIFD.getEntry(TagType.ROWSPERSTRIP).getUInt(); * * if (counts.dataCount != offsets.dataCount) * { * throw new RawDecoderException("DNG Decoder: Byte count number does not match strip size: count:" + counts.dataCount + ", stips:" + offsets.dataCount); * } * * if (yPerSlice == 0 || yPerSlice > (UInt32)dim.y) * throw new RawDecoderException("DNG Decoder: Invalid y per slice"); * * UInt32 offY = 0; * for (UInt32 s = 0; s < counts.dataCount; s++) * { * DngSliceElement e = new DngSliceElement(offsets.getUInt(s), counts.getUInt(s), 0, offY); * e.mUseBigtable = yPerSlice * mRaw.dim.y > 1024 * 1024; * offY += yPerSlice; * * if (mFile.isValid(e.byteOffset, e.byteCount)) // Only decode if size is valid * slices.addSlice(e); * } * } * UInt32 nSlices = (uint)slices.slices.Count; * if (nSlices == 0) * throw new RawDecoderException("DNG Decoder: No valid slices found."); * * slices.decodeSlice(); */ } } } } catch (Exception) { //thumbnail are optional so ignore all exception } return(null); }
protected override RawImage decodeRawInternal() { List <IFD> data = mRootIFD.getIFDsWithTag(TagType.COMPRESSION); if (data.Count == 0) { throw new RawDecoderException("DNG Decoder: No image data found"); } // Erase the ones not with JPEG compression for (int k = data.Count - 1; k >= 0; k--) { IFD i = data[k]; int comp = i.getEntry(TagType.COMPRESSION).getShort(0); bool isSubsampled = false; try { isSubsampled = (i.getEntry(TagType.NEWSUBFILETYPE).getInt() & 1) != 0; // bit 0 is on if image is subsampled } catch (TiffParserException) { } if ((comp != 7 && comp != 1 && comp != 0x884c) || isSubsampled) { // Erase if subsampled, or not JPEG or uncompressed data.Remove(i); } } if (data.Count == 0) { throw new RawDecoderException("DNG Decoder: No RAW chunks found"); } /* * if (data.size() > 1) * { * _RPT0(0, "Multiple RAW chunks found - using first only!"); * }*/ IFD raw = data[0]; UInt32 sample_format = 1; UInt32 bps = raw.getEntry(TagType.BITSPERSAMPLE).getUInt(); if (raw.hasEntry(TagType.SAMPLEFORMAT)) { sample_format = raw.getEntry(TagType.SAMPLEFORMAT).getUInt(); } if (sample_format != 1) { throw new RawDecoderException("DNG Decoder: Only 16 bit unsigned data supported."); } mRaw.isCFA = (raw.getEntry(TagType.PHOTOMETRICINTERPRETATION).getUShort() == 32803); /* * if (mRaw.isCFA) * _RPT0(0, "This is a CFA image\n"); * else * _RPT0(0, "This is NOT a CFA image\n"); */ if (sample_format == 1 && bps > 16) { throw new RawDecoderException("DNG Decoder: Integer precision larger than 16 bits currently not supported."); } if (sample_format == 3 && bps != 32) { throw new RawDecoderException("DNG Decoder: Float point must be 32 bits per sample."); } try { mRaw.dim = new iPoint2D(); mRaw.dim.x = raw.getEntry(TagType.IMAGEWIDTH).getInt(); mRaw.dim.y = raw.getEntry(TagType.IMAGELENGTH).getInt(); } catch (TiffParserException) { throw new RawDecoderException("DNG Decoder: Could not read basic image information."); } //init the raw image mRaw.Init(); mRaw.colorDepth = (ushort)bps; int compression = -1; try { compression = raw.getEntry(TagType.COMPRESSION).getShort(); if (mRaw.isCFA) { // Check if layout is OK, if present if (raw.hasEntry(TagType.CFALAYOUT)) { if (raw.getEntry(TagType.CFALAYOUT).getShort() != 1) { throw new RawDecoderException("DNG Decoder: Unsupported CFA Layout."); } } Tag cfadim = raw.getEntry(TagType.CFAREPEATPATTERNDIM); if (cfadim.dataCount != 2) { throw new RawDecoderException("DNG Decoder: Couldn't read CFA pattern dimension"); } Tag pDim = raw.getEntry(TagType.CFAREPEATPATTERNDIM); // Get the size var cPat = raw.getEntry(TagType.CFAPATTERN).data; // Does NOT contain dimensions as some documents state /* * if (raw.hasEntry(CFAPLANECOLOR)) { * Tag e = raw.getEntry(CFAPLANECOLOR); * unsigned stringcPlaneOrder = e.getData(); // Map from the order in the image, to the position in the CFA * printf("Planecolor: "); * for (UInt32 i = 0; i < e.count; i++) { * printf("%u,",cPlaneOrder[i]); * } * printf("\n"); * } */ iPoint2D cfaSize = new iPoint2D(pDim.getInt(1), pDim.getInt(0)); mRaw.cfa.setSize(cfaSize); if (cfaSize.area() != raw.getEntry(TagType.CFAPATTERN).dataCount) { throw new RawDecoderException("DNG Decoder: CFA pattern dimension and pattern count does not match: " + raw.getEntry(TagType.CFAPATTERN).dataCount); } for (int y = 0; y < cfaSize.y; y++) { for (int x = 0; x < cfaSize.x; x++) { UInt32 c1 = Convert.ToUInt32(cPat[x + y * cfaSize.x]); CFAColor c2; switch (c1) { case 0: c2 = CFAColor.RED; break; case 1: c2 = CFAColor.GREEN; break; case 2: c2 = CFAColor.BLUE; break; case 3: c2 = CFAColor.CYAN; break; case 4: c2 = CFAColor.MAGENTA; break; case 5: c2 = CFAColor.YELLOW; break; case 6: c2 = CFAColor.WHITE; break; default: c2 = CFAColor.UNKNOWN; throw new RawDecoderException("DNG Decoder: Unsupported CFA Color."); } mRaw.cfa.setColorAt(new iPoint2D(x, y), c2); } } } // Now load the image if (compression == 1) { // Uncompressed. try { UInt32 cpp = raw.getEntry(TagType.SAMPLESPERPIXEL).getUInt(); if (cpp > 4) { throw new RawDecoderException("DNG Decoder: More than 4 samples per pixel is not supported."); } mRaw.cpp = cpp; Tag offsets = raw.getEntry(TagType.STRIPOFFSETS); Tag counts = raw.getEntry(TagType.STRIPBYTECOUNTS); UInt32 yPerSlice = raw.getEntry(TagType.ROWSPERSTRIP).getUInt(); UInt32 width = raw.getEntry(TagType.IMAGEWIDTH).getUInt(); UInt32 height = raw.getEntry(TagType.IMAGELENGTH).getUInt(); if (counts.dataCount != offsets.dataCount) { throw new RawDecoderException("DNG Decoder: Byte count number does not match strip size: count:" + counts.dataCount + ", strips:" + offsets.dataCount); } UInt32 offY = 0; List <DngStrip> slices = new List <DngStrip>(); for (UInt32 s = 0; s < offsets.dataCount; s++) { DngStrip slice = new DngStrip(); slice.offset = offsets.getUInt(s); slice.count = counts.getUInt(s); slice.offsetY = offY; 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.Add(slice); } } for (int i = 0; i < slices.Count; i++) { DngStrip slice = slices[i]; TIFFBinaryReader input = new TIFFBinaryReader(mFile.BaseStream, slice.offset, (uint)mFile.BaseStream.Length); iPoint2D size = new iPoint2D((int)width, (int)slice.h); iPoint2D pos = new iPoint2D(0, (int)slice.offsetY); bool big_endian = (raw.endian == Endianness.big); // DNG spec says that if not 8 or 16 bit/sample, always use big endian if (bps != 8 && bps != 16) { big_endian = true; } try { readUncompressedRaw(ref input, size, pos, (int)(mRaw.cpp * width * bps / 8), (int)bps, big_endian ? BitOrder.Jpeg : BitOrder.Plain); } catch (IOException ex) { if (i > 0) { mRaw.errors.Add(ex.Message); } else { throw new RawDecoderException("DNG decoder: IO error occurred in first slice, unable to decode more. Error is: " + ex.Message); } } } } catch (TiffParserException) { throw new RawDecoderException("DNG Decoder: Unsupported format, uncompressed with no strips."); } } else if (compression == 7 || compression == 0x884c) { try { // Let's try loading it as tiles instead mRaw.cpp = (raw.getEntry(TagType.SAMPLESPERPIXEL).getUInt()); if (sample_format != 1) { throw new RawDecoderException("DNG Decoder: Only 16 bit unsigned data supported for compressed data."); } DngDecoderSlices slices = new DngDecoderSlices(mFile, mRaw, compression); if (raw.hasEntry(TagType.TILEOFFSETS)) { UInt32 tilew = raw.getEntry(TagType.TILEWIDTH).getUInt(); UInt32 tileh = raw.getEntry(TagType.TILELENGTH).getUInt(); if (tilew == 0 || tileh == 0) { throw new RawDecoderException("DNG Decoder: Invalid tile size"); } UInt32 tilesX = (uint)(mRaw.dim.x + tilew - 1) / tilew; UInt32 tilesY = (uint)(mRaw.dim.y + tileh - 1) / tileh; UInt32 nTiles = tilesX * tilesY; Tag offsets = raw.getEntry(TagType.TILEOFFSETS); Tag counts = raw.getEntry(TagType.TILEBYTECOUNTS); if (offsets.dataCount != counts.dataCount || offsets.dataCount != nTiles) { throw new RawDecoderException("DNG Decoder: Tile count mismatch: offsets:" + offsets.dataCount + " count:" + counts.dataCount + ", calculated:" + nTiles); } slices.mFixLjpeg = mFixLjpeg; for (UInt32 y = 0; y < tilesY; y++) { for (UInt32 x = 0; x < tilesX; x++) { DngSliceElement e = new DngSliceElement(offsets.getUInt(x + y * tilesX), counts.getUInt(x + y * tilesX), tilew * x, tileh * y); e.mUseBigtable = tilew * tileh > 1024 * 1024; slices.addSlice(e); } } } else { // Strips Tag offsets = raw.getEntry(TagType.STRIPOFFSETS); Tag counts = raw.getEntry(TagType.STRIPBYTECOUNTS); UInt32 yPerSlice = raw.getEntry(TagType.ROWSPERSTRIP).getUInt(); if (counts.dataCount != offsets.dataCount) { throw new RawDecoderException("DNG Decoder: Byte count number does not match strip size: count:" + counts.dataCount + ", stips:" + offsets.dataCount); } if (yPerSlice == 0 || yPerSlice > (UInt32)mRaw.dim.y) { throw new RawDecoderException("DNG Decoder: Invalid y per slice"); } UInt32 offY = 0; for (UInt32 s = 0; s < counts.dataCount; s++) { DngSliceElement e = new DngSliceElement(offsets.getUInt(s), counts.getUInt(s), 0, offY); e.mUseBigtable = yPerSlice * mRaw.dim.y > 1024 * 1024; offY += yPerSlice; if (mFile.isValid(e.byteOffset, e.byteCount)) // Only decode if size is valid { slices.addSlice(e); } } } UInt32 nSlices = (uint)slices.slices.Count; if (nSlices == 0) { throw new RawDecoderException("DNG Decoder: No valid slices found."); } slices.decodeSlice(); if (mRaw.errors.Count >= nSlices) { throw new RawDecoderException("DNG Decoding: Too many errors encountered. Giving up.\nFirst Error:" + mRaw.errors[0]); } } catch (TiffParserException e) { throw new RawDecoderException("DNG Decoder: Unsupported format, tried strips and tiles:" + e.Message); } } else { throw new RawDecoderException("DNG Decoder: Unknown compression: " + compression); } } catch (TiffParserException e) { throw new RawDecoderException("DNG Decoder: Image could not be read:" + e.Message); } Tag as_shot_neutral = mRootIFD.getEntryRecursive(TagType.ASSHOTNEUTRAL); if (as_shot_neutral != null) { if (as_shot_neutral.dataCount == 3) { for (UInt32 i = 0; i < 3; i++) { mRaw.metadata.wbCoeffs[i] = 1.0f / Convert.ToSingle(as_shot_neutral.data[i]); } } } else { Tag as_shot_white_xy = mRootIFD.getEntryRecursive(TagType.ASSHOTWHITEXY); if (as_shot_white_xy != null) { if (as_shot_white_xy.dataCount == 2) { mRaw.metadata.wbCoeffs[0] = as_shot_white_xy.getFloat(0); mRaw.metadata.wbCoeffs[1] = as_shot_white_xy.getFloat(1); mRaw.metadata.wbCoeffs[2] = 1 - mRaw.metadata.wbCoeffs[0] - mRaw.metadata.wbCoeffs[1]; float[] d65_white = { 0.950456F, 1, 1.088754F }; for (UInt32 i = 0; i < 3; i++) { mRaw.metadata.wbCoeffs[i] /= d65_white[i]; } } } } // Crop Tag active_area = raw.getEntry(TagType.ACTIVEAREA); if (active_area != null) { iPoint2D new_size = new iPoint2D(mRaw.dim.x, mRaw.dim.y); if (active_area.dataCount != 4) { throw new RawDecoderException("DNG: active area has " + active_area.dataCount + " values instead of 4"); } active_area.getIntArray(out int[] corners, 4); if (new iPoint2D(corners[1], corners[0]).isThisInside(mRaw.dim)) { if (new iPoint2D(corners[3], corners[2]).isThisInside(mRaw.dim)) { iRectangle2D crop = new iRectangle2D(corners[1], corners[0], corners[3] - corners[1], corners[2] - corners[0]); mRaw.subFrame(crop); } } } Tag origin_entry = raw.getEntry(TagType.DEFAULTCROPORIGIN); Tag size_entry = raw.getEntry(TagType.DEFAULTCROPSIZE); if (origin_entry != null && size_entry != null) { iRectangle2D cropped = new iRectangle2D(0, 0, mRaw.dim.x, mRaw.dim.y); /* Read crop position (sometimes is rational so use float) */ origin_entry.getFloatArray(out float[] tl, 2); if (new iPoint2D((int)tl[0], (int)tl[1]).isThisInside(mRaw.dim)) { cropped = new iRectangle2D((int)tl[0], (int)tl[1], 0, 0); } cropped.dim = mRaw.dim - cropped.pos; /* Read size (sometimes is rational so use float) */ size_entry.getFloatArray(out float[] sz, 2); iPoint2D size = new iPoint2D((int)sz[0], (int)sz[1]); if ((size + cropped.pos).isThisInside(mRaw.dim)) { cropped.dim = size; } if (!cropped.hasPositiveArea()) { throw new RawDecoderException("DNG Decoder: No positive crop area"); } mRaw.subFrame(cropped); if (mRaw.isCFA && cropped.pos.x % 2 == 1) { mRaw.cfa.shiftLeft(1); } if (mRaw.isCFA && cropped.pos.y % 2 == 1) { mRaw.cfa.shiftDown(1); } } if (mRaw.dim.area() <= 0) { throw new RawDecoderException("DNG Decoder: No image left after crop"); } // Apply stage 1 opcodes if (applyStage1DngOpcodes) { if (raw.hasEntry(TagType.OPCODELIST1)) { // Apply stage 1 codes try { //DngOpcodes codes = new DngOpcodes(raw.getEntry(TagType.OPCODELIST1)); //mRaw = codes.applyOpCodes(mRaw); } catch (RawDecoderException e) { // We push back errors from the opcode parser, since the image may still be usable mRaw.errors.Add(e.Message); } } } // Linearization Tag lintable = raw.getEntry(TagType.LINEARIZATIONTABLE); if (lintable != null) { UInt32 len = lintable.dataCount; lintable.getShortArray(out ushort[] table, (int)len); mRaw.setTable(table, (int)len, !uncorrectedRawValues); if (!uncorrectedRawValues) { //TODO Fix //mRaw.sixteenBitLookup(); //mRaw.table = (null); } } // Default white level is (2 ** BitsPerSample) - 1 mRaw.whitePoint = (uint)(1 >> raw.getEntry(TagType.BITSPERSAMPLE).getShort()) - 1; Tag whitelevel = raw.getEntry(TagType.WHITELEVEL); try { mRaw.whitePoint = whitelevel.getUInt(); } catch (Exception) { } // Set black setBlack(raw); //convert to linear value //* //TODO optimize (super slow) double maxVal = Math.Pow(2, mRaw.colorDepth); double coeff = maxVal / (mRaw.whitePoint - mRaw.blackLevelSeparate[0]); Parallel.For(mRaw.mOffset.y, mRaw.dim.y + mRaw.mOffset.y, y => //for (int y = mRaw.mOffset.y; y < mRaw.dim.y + mRaw.mOffset.y; y++) { //int offset = ((y % 2) * 2); int realY = y * mRaw.dim.x; for (int x = mRaw.mOffset.x; x < mRaw.dim.x + mRaw.mOffset.x; x++) { int pos = realY + x; double val; //Linearisation if (mRaw.table != null) { val = mRaw.table.tables[mRaw.rawData[pos]]; } else { val = mRaw.rawData[pos]; } //Black sub //val -= mRaw.blackLevelSeparate[offset + x % 2]; val -= mRaw.blackLevelSeparate[0]; //Rescaling //val /= (mRaw.whitePoint - mRaw.blackLevelSeparate[offset + x % 2]); val *= coeff; //change to take into consideration each individual blacklevel //Clip if (val > maxVal) { val = maxVal; } else if (val < 0) { val = 0; } //val *= maxVal; //rescale to colordepth of the original mRaw.rawData[pos] = (ushort)val; } }); //*/ // Apply opcodes to lossy DNG if (compression == 0x884c && !uncorrectedRawValues) { /* * if (raw.hasEntry(TagType.OPCODELIST2)) * { * // We must apply black/white scaling * mRaw.scaleBlackWhite(); * // Apply stage 2 codes * try * { * DngOpcodes codes = new DngOpcodes(raw.getEntry(TagType.OPCODELIST2)); * mRaw = codes.applyOpCodes(mRaw); * } * catch (RawDecoderException e) * { * // We push back errors from the opcode parser, since the image may still be usable * mRaw.errors.Add(e.Message); * } * mRaw.blackAreas.Clear(); * mRaw.blackLevel = 0; * mRaw.blackLevelSeparate[0] = mRaw.blackLevelSeparate[1] = mRaw.blackLevelSeparate[2] = mRaw.blackLevelSeparate[3] = 0; * mRaw.whitePoint = 65535; * }*/ } return(mRaw); }