Mercurial > hg > orthanc
annotate OrthancServer/Internals/DicomImageDecoder.cpp @ 851:e30d22020e35 jpeg
notes
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Fri, 06 Jun 2014 09:59:40 +0200 |
| parents | 9ee2e7a5efaf |
| children | 5944b8b80842 |
| rev | line source |
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| 845 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege, | |
| 4 * Belgium | |
| 5 * | |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU General Public License as | |
| 8 * published by the Free Software Foundation, either version 3 of the | |
| 9 * License, or (at your option) any later version. | |
| 10 * | |
| 11 * In addition, as a special exception, the copyright holders of this | |
| 12 * program give permission to link the code of its release with the | |
| 13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 14 * that use the same license as the "OpenSSL" library), and distribute | |
| 15 * the linked executables. You must obey the GNU General Public License | |
| 16 * in all respects for all of the code used other than "OpenSSL". If you | |
| 17 * modify file(s) with this exception, you may extend this exception to | |
| 18 * your version of the file(s), but you are not obligated to do so. If | |
| 19 * you do not wish to do so, delete this exception statement from your | |
| 20 * version. If you delete this exception statement from all source files | |
| 21 * in the program, then also delete it here. | |
| 22 * | |
| 23 * This program is distributed in the hope that it will be useful, but | |
| 24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 26 * General Public License for more details. | |
| 27 * | |
| 28 * You should have received a copy of the GNU General Public License | |
| 29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 30 **/ | |
| 31 | |
| 32 | |
| 33 #include "../PrecompiledHeadersServer.h" | |
| 34 #include "DicomImageDecoder.h" | |
| 35 | |
| 846 | 36 |
| 37 /*========================================================================= | |
| 38 | |
| 39 This file is based on portions of the following project | |
| 40 (cf. function "DecodePsmctRle1()"): | |
| 41 | |
| 42 Program: GDCM (Grassroots DICOM). A DICOM library | |
| 43 Module: http://gdcm.sourceforge.net/Copyright.html | |
| 44 | |
| 45 Copyright (c) 2006-2011 Mathieu Malaterre | |
| 46 Copyright (c) 1993-2005 CREATIS | |
| 47 (CREATIS = Centre de Recherche et d'Applications en Traitement de l'Image) | |
| 48 All rights reserved. | |
| 49 | |
| 50 Redistribution and use in source and binary forms, with or without | |
| 51 modification, are permitted provided that the following conditions are met: | |
| 52 | |
| 53 * Redistributions of source code must retain the above copyright notice, | |
| 54 this list of conditions and the following disclaimer. | |
| 55 | |
| 56 * Redistributions in binary form must reproduce the above copyright notice, | |
| 57 this list of conditions and the following disclaimer in the documentation | |
| 58 and/or other materials provided with the distribution. | |
| 59 | |
| 60 * Neither name of Mathieu Malaterre, or CREATIS, nor the names of any | |
| 61 contributors (CNRS, INSERM, UCB, Universite Lyon I), may be used to | |
| 62 endorse or promote products derived from this software without specific | |
| 63 prior written permission. | |
| 64 | |
| 65 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' | |
| 66 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 67 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 68 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR | |
| 69 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 70 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
| 71 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | |
| 72 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | |
| 73 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 74 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 75 | |
| 76 =========================================================================*/ | |
| 77 | |
| 78 | |
| 79 | |
| 845 | 80 #include "../../Core/OrthancException.h" |
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81 #include "../../Core/DicomFormat/DicomIntegerPixelAccessor.h" |
| 845 | 82 #include "../ToDcmtkBridge.h" |
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83 #include "../FromDcmtkBridge.h" |
| 845 | 84 |
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85 #include <glog/logging.h> |
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86 |
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87 #include <boost/lexical_cast.hpp> |
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88 |
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89 #if ORTHANC_JPEG_LOSSLESS_ENABLED == 1 |
| 845 | 90 #include <dcmtk/dcmjpls/djcodecd.h> |
| 91 #include <dcmtk/dcmjpls/djcparam.h> | |
| 92 #include <dcmtk/dcmjpeg/djrplol.h> | |
| 93 #endif | |
| 94 | |
| 95 | |
| 96 namespace Orthanc | |
| 97 { | |
| 846 | 98 static const DicomTag DICOM_TAG_CONTENT(0x07a1, 0x100a); |
| 99 static const DicomTag DICOM_TAG_COMPRESSION_TYPE(0x07a1, 0x1011); | |
| 100 | |
| 101 bool DicomImageDecoder::IsPsmctRle1(DcmDataset& dataset) | |
| 102 { | |
| 103 DcmElement* e; | |
| 104 char* c; | |
| 105 | |
| 106 // Check whether the DICOM instance contains an image encoded with | |
| 107 // the PMSCT_RLE1 scheme. | |
| 108 if (!dataset.findAndGetElement(ToDcmtkBridge::Convert(DICOM_TAG_COMPRESSION_TYPE), e).good() || | |
| 109 e == NULL || | |
| 110 !e->isaString() || | |
| 111 !e->getString(c).good() || | |
| 112 c == NULL || | |
| 113 strcmp("PMSCT_RLE1", c)) | |
| 114 { | |
| 115 return false; | |
| 116 } | |
| 117 else | |
| 118 { | |
| 119 return true; | |
| 120 } | |
| 121 } | |
| 122 | |
| 123 | |
| 124 bool DicomImageDecoder::DecodePsmctRle1(std::string& output, | |
| 125 DcmDataset& dataset) | |
| 126 { | |
| 127 // Check whether the DICOM instance contains an image encoded with | |
| 128 // the PMSCT_RLE1 scheme. | |
| 129 if (!IsPsmctRle1(dataset)) | |
| 130 { | |
| 131 return false; | |
| 132 } | |
| 133 | |
| 134 // OK, this is a custom RLE encoding from Philips. Get the pixel | |
| 135 // data from the appropriate private DICOM tag. | |
| 136 Uint8* pixData = NULL; | |
| 137 DcmElement* e; | |
| 138 if (!dataset.findAndGetElement(ToDcmtkBridge::Convert(DICOM_TAG_CONTENT), e).good() || | |
| 139 e == NULL || | |
| 140 e->getUint8Array(pixData) != EC_Normal) | |
| 141 { | |
| 142 return false; | |
| 143 } | |
| 144 | |
| 145 // The "unsigned" below IS VERY IMPORTANT | |
| 146 const uint8_t* inbuffer = reinterpret_cast<const uint8_t*>(pixData); | |
| 147 const size_t length = e->getLength(); | |
| 148 | |
| 149 /** | |
| 150 * The code below is an adaptation of a sample code for GDCM by | |
| 151 * Mathieu Malaterre (under a BSD license). | |
| 152 * http://gdcm.sourceforge.net/html/rle2img_8cxx-example.html | |
| 153 **/ | |
| 154 | |
| 155 // RLE pass | |
| 156 std::vector<uint8_t> temp; | |
| 157 temp.reserve(length); | |
| 158 for (size_t i = 0; i < length; i++) | |
| 159 { | |
| 160 if (inbuffer[i] == 0xa5) | |
| 161 { | |
| 162 temp.push_back(inbuffer[i+2]); | |
| 163 for (uint8_t repeat = inbuffer[i + 1]; repeat != 0; repeat--) | |
| 164 { | |
| 165 temp.push_back(inbuffer[i+2]); | |
| 166 } | |
| 167 i += 2; | |
| 168 } | |
| 169 else | |
| 170 { | |
| 171 temp.push_back(inbuffer[i]); | |
| 172 } | |
| 173 } | |
| 174 | |
| 175 // Delta encoding pass | |
| 176 uint16_t delta = 0; | |
| 177 output.clear(); | |
| 178 output.reserve(temp.size()); | |
| 179 for (size_t i = 0; i < temp.size(); i++) | |
| 180 { | |
| 181 uint16_t value; | |
| 182 | |
| 183 if (temp[i] == 0x5a) | |
| 184 { | |
| 185 uint16_t v1 = temp[i + 1]; | |
| 186 uint16_t v2 = temp[i + 2]; | |
| 187 value = (v2 << 8) + v1; | |
| 188 i += 2; | |
| 189 } | |
| 190 else | |
| 191 { | |
| 192 value = delta + (int8_t) temp[i]; | |
| 193 } | |
| 194 | |
| 195 output.push_back(value & 0xff); | |
| 196 output.push_back(value >> 8); | |
| 197 delta = value; | |
| 198 } | |
| 199 | |
| 200 if (output.size() % 2) | |
| 201 { | |
| 202 output.resize(output.size() - 1); | |
| 203 } | |
| 204 | |
| 205 return true; | |
| 206 } | |
| 207 | |
| 208 | |
| 845 | 209 void DicomImageDecoder::SetupImageBuffer(ImageBuffer& target, |
| 210 DcmDataset& dataset) | |
| 211 { | |
| 212 OFString value; | |
| 213 | |
| 214 if (!dataset.findAndGetOFString(ToDcmtkBridge::Convert(DICOM_TAG_COLUMNS), value).good()) | |
| 215 { | |
| 216 throw OrthancException(ErrorCode_BadFileFormat); | |
| 217 } | |
| 218 | |
| 219 unsigned int width = boost::lexical_cast<unsigned int>(value.c_str()); | |
| 220 | |
| 221 if (!dataset.findAndGetOFString(ToDcmtkBridge::Convert(DICOM_TAG_ROWS), value).good()) | |
| 222 { | |
| 223 throw OrthancException(ErrorCode_BadFileFormat); | |
| 224 } | |
| 225 | |
| 226 unsigned int height = boost::lexical_cast<unsigned int>(value.c_str()); | |
| 227 | |
| 228 if (!dataset.findAndGetOFString(ToDcmtkBridge::Convert(DICOM_TAG_BITS_STORED), value).good()) | |
| 229 { | |
| 230 throw OrthancException(ErrorCode_BadFileFormat); | |
| 231 } | |
| 232 | |
| 233 unsigned int bitsStored = boost::lexical_cast<unsigned int>(value.c_str()); | |
| 234 | |
| 235 if (!dataset.findAndGetOFString(ToDcmtkBridge::Convert(DICOM_TAG_PIXEL_REPRESENTATION), value).good()) | |
| 236 { | |
| 237 throw OrthancException(ErrorCode_BadFileFormat); | |
| 238 } | |
| 239 | |
| 240 bool isSigned = (boost::lexical_cast<unsigned int>(value.c_str()) != 0); | |
| 241 | |
| 242 unsigned int samplesPerPixel = 1; // By default | |
| 243 if (dataset.findAndGetOFString(ToDcmtkBridge::Convert(DICOM_TAG_SAMPLES_PER_PIXEL), value).good()) | |
| 244 { | |
| 245 samplesPerPixel = boost::lexical_cast<unsigned int>(value.c_str()); | |
| 246 } | |
| 247 | |
| 248 target.SetHeight(height); | |
| 249 target.SetWidth(width); | |
| 250 | |
| 251 if (bitsStored == 8 && samplesPerPixel == 1 && !isSigned) | |
| 252 { | |
| 253 target.SetFormat(PixelFormat_Grayscale8); | |
| 254 } | |
| 255 else if (bitsStored == 8 && samplesPerPixel == 3 && !isSigned) | |
| 256 { | |
| 257 target.SetFormat(PixelFormat_RGB24); | |
| 258 } | |
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259 else if (bitsStored >= 9 && bitsStored <= 16 && samplesPerPixel == 1 && !isSigned) |
| 845 | 260 { |
| 261 target.SetFormat(PixelFormat_Grayscale16); | |
| 262 } | |
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263 else if (bitsStored >= 9 && bitsStored <= 16 && samplesPerPixel == 1 && isSigned) |
| 845 | 264 { |
| 265 target.SetFormat(PixelFormat_SignedGrayscale16); | |
| 266 } | |
| 267 else | |
| 268 { | |
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269 LOG(WARNING) << "Unsupported DICOM image: " << bitsStored << "bpp, " |
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270 << samplesPerPixel << " channels, " << (isSigned ? "signed" : "unsigned"); |
| 845 | 271 throw OrthancException(ErrorCode_NotImplemented); |
| 272 } | |
| 273 } | |
| 274 | |
| 275 | |
| 276 bool DicomImageDecoder::IsJpegLossless(const DcmDataset& dataset) | |
| 277 { | |
| 851 | 278 // http://support.dcmtk.org/docs/dcxfer_8h-source.html |
| 845 | 279 return (dataset.getOriginalXfer() == EXS_JPEGLSLossless || |
| 280 dataset.getOriginalXfer() == EXS_JPEGLSLossy); | |
| 281 } | |
| 282 | |
| 283 | |
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284 bool DicomImageDecoder::IsUncompressedImage(const DcmDataset& dataset) |
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285 { |
| 851 | 286 // http://support.dcmtk.org/docs/dcxfer_8h-source.html |
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287 return (dataset.getOriginalXfer() == EXS_Unknown || |
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288 dataset.getOriginalXfer() == EXS_LittleEndianImplicit || |
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289 dataset.getOriginalXfer() == EXS_BigEndianImplicit || |
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290 dataset.getOriginalXfer() == EXS_LittleEndianExplicit || |
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291 dataset.getOriginalXfer() == EXS_BigEndianExplicit); |
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292 } |
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293 |
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294 |
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295 template <typename PixelType> |
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296 static void CopyPixels(ImageAccessor& target, |
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297 const DicomIntegerPixelAccessor& source) |
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298 { |
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299 const PixelType minValue = std::numeric_limits<PixelType>::min(); |
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300 const PixelType maxValue = std::numeric_limits<PixelType>::max(); |
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301 |
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302 for (unsigned int y = 0; y < source.GetHeight(); y++) |
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303 { |
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304 PixelType* pixel = reinterpret_cast<PixelType*>(target.GetRow(y)); |
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305 for (unsigned int x = 0; x < source.GetWidth(); x++) |
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306 { |
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307 for (unsigned int c = 0; c < source.GetChannelCount(); c++, pixel++) |
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308 { |
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309 int32_t v = source.GetValue(x, y, c); |
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310 if (v < static_cast<int32_t>(minValue)) |
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311 { |
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312 *pixel = minValue; |
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313 } |
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314 else if (v > static_cast<int32_t>(maxValue)) |
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315 { |
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316 *pixel = maxValue; |
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317 } |
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318 else |
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319 { |
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320 *pixel = static_cast<PixelType>(v); |
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321 } |
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322 } |
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323 } |
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324 } |
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325 } |
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326 |
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327 |
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328 void DicomImageDecoder::DecodeUncompressedImage(ImageBuffer& target, |
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329 DcmDataset& dataset, |
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330 unsigned int frame) |
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331 { |
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fully functional JPEG-LS conversion
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332 if (!IsUncompressedImage(dataset)) |
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fully functional JPEG-LS conversion
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333 { |
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334 throw OrthancException(ErrorCode_BadParameterType); |
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fully functional JPEG-LS conversion
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335 } |
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fully functional JPEG-LS conversion
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336 |
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fully functional JPEG-LS conversion
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337 DecodeUncompressedImageInternal(target, dataset, frame); |
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fully functional JPEG-LS conversion
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338 } |
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fully functional JPEG-LS conversion
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339 |
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340 |
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fully functional JPEG-LS conversion
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341 void DicomImageDecoder::DecodeUncompressedImageInternal(ImageBuffer& target, |
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342 DcmDataset& dataset, |
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fully functional JPEG-LS conversion
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343 unsigned int frame) |
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fully functional JPEG-LS conversion
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344 { |
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345 // See also: http://support.dcmtk.org/wiki/dcmtk/howto/accessing-compressed-data |
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fully functional JPEG-LS conversion
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346 |
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fully functional JPEG-LS conversion
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347 std::auto_ptr<DicomIntegerPixelAccessor> source; |
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348 |
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fully functional JPEG-LS conversion
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349 DicomMap m; |
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fully functional JPEG-LS conversion
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350 FromDcmtkBridge::Convert(m, dataset); |
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351 |
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352 |
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fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
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353 /** |
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fully functional JPEG-LS conversion
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354 * Create an accessor to the raw values of the DICOM image. |
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fully functional JPEG-LS conversion
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846
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355 **/ |
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fully functional JPEG-LS conversion
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356 |
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357 std::string privateContent; |
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fully functional JPEG-LS conversion
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358 |
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fully functional JPEG-LS conversion
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359 DcmElement* e; |
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fully functional JPEG-LS conversion
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360 if (dataset.findAndGetElement(ToDcmtkBridge::Convert(DICOM_TAG_PIXEL_DATA), e).good() && |
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fully functional JPEG-LS conversion
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361 e != NULL) |
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fully functional JPEG-LS conversion
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362 { |
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363 Uint8* pixData = NULL; |
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fully functional JPEG-LS conversion
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364 if (e->getUint8Array(pixData) == EC_Normal) |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
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|
365 { |
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03ea55da7429
fully functional JPEG-LS conversion
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366 source.reset(new DicomIntegerPixelAccessor(m, pixData, e->getLength())); |
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fully functional JPEG-LS conversion
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846
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367 } |
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03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
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|
368 } |
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03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
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846
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369 else if (DicomImageDecoder::DecodePsmctRle1(privateContent, dataset)) |
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03ea55da7429
fully functional JPEG-LS conversion
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846
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|
370 { |
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fully functional JPEG-LS conversion
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parents:
846
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371 LOG(INFO) << "The PMSCT_RLE1 decoding has succeeded"; |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
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372 Uint8* pixData = NULL; |
|
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fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
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373 if (privateContent.size() > 0) |
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03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
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|
374 { |
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fully functional JPEG-LS conversion
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parents:
846
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|
375 pixData = reinterpret_cast<Uint8*>(&privateContent[0]); |
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03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
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|
376 } |
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fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
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846
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377 |
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fully functional JPEG-LS conversion
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|
378 source.reset(new DicomIntegerPixelAccessor(m, pixData, privateContent.size())); |
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fully functional JPEG-LS conversion
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846
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|
379 } |
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fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
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|
380 |
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03ea55da7429
fully functional JPEG-LS conversion
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381 if (source.get() == NULL) |
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fully functional JPEG-LS conversion
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846
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382 { |
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846
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383 throw OrthancException(ErrorCode_BadFileFormat); |
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03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
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|
384 } |
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03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
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|
385 |
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fully functional JPEG-LS conversion
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386 source->SetCurrentFrame(frame); |
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fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
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846
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|
387 |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
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846
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changeset
|
388 |
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fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
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846
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|
389 /** |
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fully functional JPEG-LS conversion
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390 * Resize the target image, with some sanity checks. |
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fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
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391 **/ |
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fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
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|
392 |
|
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fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
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846
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393 SetupImageBuffer(target, dataset); |
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846
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394 |
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fully functional JPEG-LS conversion
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parents:
846
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395 if (target.GetWidth() != target.GetWidth() || |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
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|
396 target.GetHeight() != target.GetHeight()) |
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03ea55da7429
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
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|
397 { |
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parents:
846
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398 throw OrthancException(ErrorCode_InternalError); |
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03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
399 } |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
400 |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
401 bool ok; |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
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|
402 switch (target.GetFormat()) |
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03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
403 { |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
404 case PixelFormat_RGB24: |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
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|
405 ok = source->GetChannelCount() == 3; |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
406 break; |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
407 |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
408 case PixelFormat_RGBA32: |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
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|
409 ok = source->GetChannelCount() == 4; |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
410 break; |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
411 |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
412 case PixelFormat_Grayscale8: |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
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|
413 case PixelFormat_Grayscale16: |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
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|
414 case PixelFormat_SignedGrayscale16: |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
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|
415 ok = source->GetChannelCount() == 1; |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
416 break; |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
417 |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
418 default: |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
419 ok = false; // (*) |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
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changeset
|
420 break; |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
421 } |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
422 |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
423 if (!ok) |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
424 { |
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03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
425 throw OrthancException(ErrorCode_InternalError); |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
426 } |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
427 |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
428 |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
429 /** |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
430 * Loop over the DICOM buffer, storing its value into the target |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
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|
431 * image. |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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|
432 **/ |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
433 |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
434 ImageAccessor accessor(target.GetAccessor()); |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
435 |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
436 switch (target.GetFormat()) |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
437 { |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
438 case PixelFormat_RGB24: |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
439 case PixelFormat_RGBA32: |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
440 case PixelFormat_Grayscale8: |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
441 CopyPixels<uint8_t>(accessor, *source); |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
442 break; |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
443 |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
444 case PixelFormat_Grayscale16: |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
445 CopyPixels<uint16_t>(accessor, *source); |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
446 break; |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
447 |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
changeset
|
448 case PixelFormat_SignedGrayscale16: |
|
03ea55da7429
fully functional JPEG-LS conversion
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
846
diff
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449 CopyPixels<int16_t>(accessor, *source); |
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450 break; |
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451 |
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452 default: |
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453 throw OrthancException(ErrorCode_InternalError); |
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454 } |
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455 } |
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456 |
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457 |
| 845 | 458 #if ORTHANC_JPEG_LOSSLESS_ENABLED == 1 |
| 459 void DicomImageDecoder::DecodeJpegLossless(ImageBuffer& target, | |
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460 DcmDataset& dataset, |
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461 unsigned int frame) |
| 845 | 462 { |
| 463 if (!IsJpegLossless(dataset)) | |
| 464 { | |
| 465 throw OrthancException(ErrorCode_BadParameterType); | |
| 466 } | |
| 467 | |
| 468 DcmElement *element = NULL; | |
| 469 if (!dataset.findAndGetElement(ToDcmtkBridge::Convert(DICOM_TAG_PIXEL_DATA), element).good()) | |
| 470 { | |
| 471 throw OrthancException(ErrorCode_BadFileFormat); | |
| 472 } | |
| 473 | |
| 474 DcmPixelData& pixelData = dynamic_cast<DcmPixelData&>(*element); | |
| 475 DcmPixelSequence* pixelSequence = NULL; | |
| 476 if (!pixelData.getEncapsulatedRepresentation | |
| 477 (dataset.getOriginalXfer(), NULL, pixelSequence).good()) | |
| 478 { | |
| 479 throw OrthancException(ErrorCode_BadFileFormat); | |
| 480 } | |
| 481 | |
| 482 SetupImageBuffer(target, dataset); | |
| 483 | |
| 484 ImageAccessor accessor(target.GetAccessor()); | |
| 485 | |
| 486 /** | |
| 487 * The "DJLSLosslessDecoder" and "DJLSNearLosslessDecoder" in DCMTK | |
| 488 * are exactly the same, except for the "supportedTransferSyntax()" | |
| 489 * virtual function. | |
| 490 * http://support.dcmtk.org/docs/classDJLSDecoderBase.html | |
| 491 **/ | |
| 492 | |
| 493 DJLSLosslessDecoder decoder; DJLSCodecParameter parameters; | |
| 494 //DJLSNearLosslessDecoder decoder; DJLSCodecParameter parameters; | |
| 495 | |
| 496 Uint32 startFragment = 0; // Default | |
| 497 OFString decompressedColorModel; // Out | |
| 498 DJ_RPLossless representationParameter; | |
| 499 OFCondition c = decoder.decodeFrame(&representationParameter, pixelSequence, ¶meters, | |
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500 &dataset, frame, startFragment, accessor.GetBuffer(), |
| 845 | 501 accessor.GetSize(), decompressedColorModel); |
| 502 | |
| 503 if (!c.good()) | |
| 504 { | |
| 505 throw OrthancException(ErrorCode_InternalError); | |
| 506 } | |
| 507 } | |
| 508 #endif | |
| 846 | 509 |
| 510 | |
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511 |
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512 bool DicomImageDecoder::Decode(ImageBuffer& target, |
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513 DcmDataset& dataset, |
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514 unsigned int frame) |
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515 { |
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516 if (IsUncompressedImage(dataset)) |
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517 { |
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518 DecodeUncompressedImage(target, dataset, frame); |
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519 return true; |
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520 } |
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521 |
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522 #if ORTHANC_JPEG_LOSSLESS_ENABLED == 1 |
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523 if (IsJpegLossless(dataset)) |
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524 { |
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525 LOG(INFO) << "Decoding a JPEG-LS image"; |
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526 DecodeJpegLossless(target, dataset, frame); |
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527 return true; |
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528 } |
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529 #endif |
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530 |
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531 /** |
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532 * This DICOM image format is not natively supported by |
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533 * Orthanc. As a last resort, try and decode it through |
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534 * DCMTK. This will result in higher memory consumption. This is |
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535 * actually the second example of the following page: |
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536 * http://support.dcmtk.org/docs/mod_dcmjpeg.html#Examples |
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537 **/ |
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538 |
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539 { |
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540 LOG(INFO) << "Using DCMTK to decode a compressed image"; |
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541 |
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542 std::auto_ptr<DcmDataset> converted(dynamic_cast<DcmDataset*>(dataset.clone())); |
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543 converted->chooseRepresentation(EXS_LittleEndianExplicit, NULL); |
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544 |
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545 if (converted->canWriteXfer(EXS_LittleEndianExplicit)) |
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546 { |
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547 DecodeUncompressedImageInternal(target, *converted, frame); |
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548 return true; |
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549 } |
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550 } |
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551 |
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552 return false; |
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553 } |
| 845 | 554 } |