TMC3.cpp 19.9 KB
Newer Older
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
1
/* The copyright in this software is being made available under the BSD
David Flynn's avatar
David Flynn committed
2
3
4
 * Licence, included below.  This software may be subject to other third
 * party and contributor rights, including patent rights, and no such
 * rights are granted under this licence.
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
5
 *
David Flynn's avatar
David Flynn committed
6
 * Copyright (c) 2017-2018, ISO/IEC
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
7
8
9
10
11
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
David Flynn's avatar
David Flynn committed
12
13
14
15
16
17
18
19
20
21
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * * Neither the name of the ISO/IEC nor the names of its contributors
 *   may be used to endorse or promote products derived from this
 *   software without specific prior written permission.
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
22
23
24
25
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
David Flynn's avatar
David Flynn committed
26
27
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
28
29
30
31
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
David Flynn's avatar
David Flynn committed
32
33
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
34
35
36
 */

#include "TMC3.h"
37
#include "program_options_lite.h"
38
#include "version.h"
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
39
40
41
42
43

using namespace std;
using namespace pcc;

int main(int argc, char *argv[]) {
44
  cout << "MPEG PCC tmc3 version " << ::pcc::version << endl;
45

Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
46
47
48
49
  Parameters params;
  if (!ParseParameters(argc, argv, params)) {
    return -1;
  }
50
51
52
53
54
55
56

  // Timers to count elapsed wall/user time
  pcc::chrono::Stopwatch<std::chrono::steady_clock> clock_wall;
  pcc::chrono::Stopwatch<pcc::chrono::utime_inc_children_clock> clock_user;

  clock_wall.start();

Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
57
  int ret = 0;
58
59
  if (params.mode == CODEC_MODE_ENCODE || params.mode == CODEC_MODE_ENCODE_LOSSLESS_GEOMETRY ||
      params.mode == CODEC_MODE_ENCODE_TRISOUP_GEOMETRY) {
60
    ret = Compress(params, clock_user);
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
61
  } else {
62
    ret = Decompress(params, clock_user);
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
63
64
  }

65
66
67
68
69
70
71
72
  clock_wall.stop();

  using namespace std::chrono;
  auto total_wall = duration_cast<milliseconds>(clock_wall.count()).count();
  auto total_user = duration_cast<milliseconds>(clock_user.count()).count();
  std::cout << "Processing time (wall): " << total_wall / 1000.0 << " s\n";
  std::cout << "Processing time (user): " << total_user / 1000.0 << " s\n";

Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
73
74
75
  return ret;
}

76
77
78
79
80
81
82
83
84
85
86
87
88
//---------------------------------------------------------------------------
// :: Command line / config parsing helpers

template <typename T>
static std::istream& readUInt(std::istream &in, T &val) {
  unsigned int tmp;
  in >> tmp;
  val = T(tmp);
  return in;
}

static std::istream& operator>>(std::istream &in, CodecMode &val) {
  return readUInt(in, val);
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
89
90
}

91
92
93
94
static std::istream& operator>>(std::istream &in, ColorTransform &val) {
  return readUInt(in, val);
}

95
96
97
98
99
namespace pcc {
static std::istream& operator>>(std::istream &in, TransformType &val) {
  return readUInt(in, val);
}}

100
101
102
103
104
namespace pcc {
static std::istream& operator>>(std::istream &in, GeometryCodecType &val) {
  return readUInt(in, val);
}}

105
106
107
108
109
110
111
112
113
namespace pcc {
static std::ostream& operator<<(std::ostream &out, const TransformType &val) {
  switch (val) {
  case TransformType::kIntegerLift: out << "0 (IntegerLifting)"; break;
  case TransformType::kRAHT:        out << "1 (RAHT)"; break;
  }
  return out;
}}

114
115
116
117
118
119
120
121
122
123
namespace pcc {
static std::ostream& operator<<(std::ostream &out, const GeometryCodecType &val) {
  switch (val) {
  case GeometryCodecType::kBypass:  out << "0 (Bypass)"; break;
  case GeometryCodecType::kOctree:  out << "1 (TMC1 Octree)"; break;
  case GeometryCodecType::kTriSoup: out << "2 (TMC3 TriSoup)"; break;
  }
  return out;
}}

124
125
126
//---------------------------------------------------------------------------
// :: Command line / config parsing

Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
127
bool ParseParameters(int argc, char *argv[], Parameters &params) {
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147

  namespace po = df::program_options_lite;

  PCCAttributeEncodeParamaters params_attr;
  bool print_help = false;

  // a helper to set the attribute
  std::function<po::OptionFunc::Func> attribute_setter =
    [&](po::Options&, const std::string& name, po::ErrorReporter) {
      // copy the current state of parsed attribute parameters
      //
      // NB: this does not cause the default values of attr to be restored
      // for the next attribute block.  A side-effect of this is that the
      // following is allowed leading to attribute foo having both X=1 and
      // Y=2:
      //   "--attr.X=1 --attribute foo --attr.Y=2 --attribute foo"
      //
      params.encodeParameters.attributeEncodeParameters[name] = params_attr;
    };

148
  /* clang-format off */
149
150
151
152
153
154
155
156
157
158
159
160
  // The definition of the program/config options, along with default values.
  //
  // NB: when updating the following tables:
  //      (a) please keep to 80-columns for easier reading at a glance,
  //      (b) do not vertically align values -- it breaks quickly
  //
  po::Options opts;
  opts.addOptions()
  ("help", print_help, false, "this help text")
  ("config,c", po::parseConfigFile, "configuration file name")

  ("mode", params.mode, CODEC_MODE_ENCODE,
161
162
163
164
165
166
    "The encoding/decoding mode:\n"
    "  0: encode\n"
    "  1: decode\n"
    // NB: the following forms are deprecated
    "  2: encode with lossless geometry\n"
    "  3: decode with lossless geometry")
167
168
169

  // i/o parameters
  ("reconstructedDataPath",
170
171
    params.reconstructedDataPath, {},
    "The ouput reconstructed pointcloud file path (decoder only)")
172
173

  ("uncompressedDataPath",
174
175
    params.uncompressedDataPath, {},
    "The input pointcloud file path")
176
177

  ("compressedStreamPath",
178
179
    params.compressedStreamPath, {},
    "The compressed bitstream path (encoder=output, decoder=input)")
180

181
  ("postRecolorPath",
182
183
    params.encodeParameters.postRecolorPath, {},
    "Recolored pointcloud file path (encoder only)")
184
185

  ("preInvScalePath",
186
187
    params.decodeParameters.preInvScalePath, {},
    "Pre inverse scaled pointcloud file path (decoder only)")
188

189
190
  // general
  ("colorTransform",
191
192
193
194
    params.colorTransform, COLOR_TRANSFORM_RGB_TO_YCBCR,
    "The colour transform to be applied:\n"
    "  0: none\n"
    "  1: RGB to YCbCr (Rec.709)")
195
196

  ("positionQuantizationScale",
197
198
    params.encodeParameters.positionQuantizationScale, 1.,
    "Scale factor to be applied to point positions during quantization process")
199
200

  ("mergeDuplicatedPoints",
201
202
    params.encodeParameters.mergeDuplicatedPoints, true,
    "Enables removal of duplicated points")
203
204

  ("roundOutputPositions",
205
206
    params.decodeParameters.roundOutputPositions, false,
    "todo(kmammou)")
207

208
  // tools
209
  ("geometryCodec",
210
211
212
213
214
    params.encodeParameters.geometryCodec, GeometryCodecType::kOctree,
    "Controls the method used to encode geometry:"
    "  0: bypass (a priori)\n"
    "  1: octree (TMC3)\n"
    "  2: trisoup (TMC1)")
215

216
  ("neighbourContextualisation",
217
218
    params.encodeParameters.neighbourContextsEnabled, true,
    "Contextualise geometry octree occupancy based on neighbour patterns")
219

220
  ("inferredDirectCodingMode",
221
222
    params.encodeParameters.inferredDirectCodingModeEnabled, true,
    "Permits early termination of the geometry octree for isolated points")
223

224
225
  // (trisoup) geometry parameters
  ("triSoupDepth",  // log2(maxBB+1), where maxBB+1 is analogous to image width
226
227
    params.encodeParameters.triSoup.depth, 10,
    "Depth of voxels (reconstructed points) in trisoup geometry")
228
229

  ("triSoupLevel",
230
231
    params.encodeParameters.triSoup.level, 7,
    "Level of triangles (reconstructed surface) in trisoup geometry")
232
233

  ("triSoupIntToOrigScale",  // reciprocal of positionQuantizationScale
234
235
    params.encodeParameters.triSoup.intToOrigScale, 1.,
    "orig_coords = integer_coords * intToOrigScale + intToOrigTranslation")
236
237

  ("triSoupIntToOrigTranslation",
238
239
    params.encodeParameters.triSoup.intToOrigTranslation, {0., 0., 0.},
    "orig_coords = integer_coords * intToOrigScale + intToOrigTranslation")
240

241
242
243
  // attribute processing
  //   NB: Attribute options are special in the way they are applied (see above)
  ("attribute",
244
245
246
    attribute_setter,
    "Encode the given attribute (NB, must appear after the"
    "following attribute parameters)")
247
248

  ("searchRange",
249
250
    params_attr.searchRange, size_t(0),
    "Attribute's todo(kmammou)")
251

252
  ("transformType",
253
254
255
256
    params_attr.transformType, TransformType::kIntegerLift,
    "Coding method to use for attribute:\n"
    "  0: Nearest neighbour prediction with integer lifting transform\n"
    "  1: Region Adaptive Hierarchical Transform (RAHT)")
257

258
  ("rahtLeafDecimationDepth",
259
260
261
    params_attr.binaryLevelThresholdRaht, 3,
    "Sets coefficients to zero in the bottom n levels of RAHT tree. "
    "Used for chroma-subsampling in attribute=color only.")
262

263
  ("rahtQuantizationStep",
264
265
    params_attr.quantizationStepRaht, 1,
    "Quantization step size used in RAHT")
266
267

  ("rahtDepth",
268
269
270
    params_attr.depthRaht, 21,
    "Number of bits for morton representation of an RAHT co-ordinate"
    "component")
271

272
  ("numberOfNearestNeighborsInPrediction",
273
274
    params_attr.numberOfNearestNeighborsInPrediction, size_t(4),
    "Attribute's maximum number of nearest neighbors to be used for prediction")
275
276

  ("levelOfDetailCount",
277
278
    params_attr.levelOfDetailCount, size_t(6),
    "Attribute's number of levels of detail")
279
280

  ("quantizationSteps",
281
282
    params_attr.quantizationSteps, {},
    "Attribute's list of quantization step sizes (one for each LoD)")
283
284

  ("dist2", params_attr.dist2, {},
285
    "Attribute's list of squared distances (one for each LoD)")
286
  ;
287
  /* clang-format on */
288

289

290
291
292
293
294
295
296
297
298
299
300
301
302
303
  po::setDefaults(opts);
  po::ErrorReporter err;
  const list<const char*>& argv_unhandled =
    po::scanArgv(opts, argc, (const char**)argv, err);

  for (const auto arg : argv_unhandled) {
    err.warn() << "Unhandled argument ignored: " << arg << "\n";
  }

  if (argc == 1 || print_help) {
    po::doHelp(std::cout, opts, 78);
    return false;
  }

304
305
306
307
308
309
310
311
312
313
314
315
  // Set GeometryCodecType according to codec mode
  // NB: for bypass, the decoder must load the a priori geometry
  if (params.mode == 2 || params.mode == 3) {
    params.encodeParameters.geometryCodec = GeometryCodecType::kBypass;
  }
  if (params.mode == 4) {
    params.encodeParameters.geometryCodec = GeometryCodecType::kTriSoup;
  }

  // Restore params.mode to be encode vs decode
  params.mode = CodecMode(params.mode & 1);

316
  // For trisoup, ensure that positionQuantizationScale is the exact inverse of intToOrigScale.
317
  if (params.encodeParameters.geometryCodec == GeometryCodecType::kTriSoup) {
318
319
320
321
    params.encodeParameters.positionQuantizationScale =
        1.0 / params.encodeParameters.triSoup.intToOrigScale;
  }

322
323
324
325
326
327
328
  // For RAHT, ensure that the unused lod count = 0 (prevents mishaps)
  for (auto &attr : params.encodeParameters.attributeEncodeParameters) {
    if (attr.second.transformType != TransformType::kIntegerLift) {
      attr.second.levelOfDetailCount = 0;
    }
  }

329
  // sanity checks
330
  //  - validate that quantizationSteps, dist2
331
332
  //    of each attribute contain levelOfDetailCount elements.
  for (const auto &attr : params.encodeParameters.attributeEncodeParameters) {
333
334
    if (attr.second.transformType == TransformType::kIntegerLift) {
      int lod = attr.second.levelOfDetailCount;
335

336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
      if (lod > 255) {
        err.error() << attr.first
          << ".levelOfDetailCount must be less than 256\n";
      }
      if (attr.second.dist2.size() != lod) {
        err.error() << attr.first << ".dist2 does not have " << lod << " entries\n";
      }
      if (attr.second.quantizationSteps.size() != lod) {
        err.error() << attr.first << ".quantizationSteps does not have " << lod << " entries\n";
      }
      if (attr.second.numberOfNearestNeighborsInPrediction >
          PCCTMC3MaxPredictionNearestNeighborCount)
      {
        err.error() << attr.first
          << ".numberOfNearestNeighborsInPrediction must be less than "
          << PCCTMC3MaxPredictionNearestNeighborCount << "\n";
      }
353
    }
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
354
355
  }

356
357
  // check required arguments are specified

358
  const bool encode = params.mode == CODEC_MODE_ENCODE;
359
360
361
362
363
364
365
366
367
368
369
370

  if (encode && params.uncompressedDataPath.empty())
    err.error() << "uncompressedDataPath not set\n";

  if (!encode && params.reconstructedDataPath.empty())
    err.error() << "reconstructedDataPath not set\n";

  if (params.compressedStreamPath.empty())
    err.error() << "compressedStreamPath not set\n";

  // currently the attributes with lossless geometry require the source data
  // todo(?): remove this dependency by improving reporting
371
  if (params.encodeParameters.geometryCodec == GeometryCodecType::kBypass
372
373
374
375
376
377
378
379
   && params.uncompressedDataPath.empty())
    err.error() << "uncompressedDataPath not set\n";

  // report the current configuration (only in the absence of errors so
  // that errors/warnings are more obvious and in the same place).
  if (err.is_errored)
    return false;

Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
380
  cout << "+ Parameters" << endl;
381
  if (params.mode == CODEC_MODE_ENCODE) {
382
    cout << "\t mode                        encode\n";
383
  } else if (params.mode == CODEC_MODE_DECODE) {
384
    cout << "\t mode                        decode\n";
385
  }
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
386
387
388
389
  cout << "\t uncompressedDataPath        " << params.uncompressedDataPath << endl;
  cout << "\t compressedStreamPath        " << params.compressedStreamPath << endl;
  cout << "\t reconstructedDataPath       " << params.reconstructedDataPath << endl;
  cout << "\t colorTransform              " << params.colorTransform << endl;
390
  if (encode) {
391
392
393
    cout << "\t geometryCodec               "
         << params.encodeParameters.geometryCodec << endl;

Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
394
395
    cout << "\t positionQuantizationScale   " << params.encodeParameters.positionQuantizationScale
         << endl;
396
397
398
399
400
401
402
403
404
405
406

    if (params.encodeParameters.geometryCodec == GeometryCodecType::kOctree) {
      cout << "\t mergeDuplicatedPoints       "
           << params.encodeParameters.mergeDuplicatedPoints << '\n';
      cout << "\t neighbourContextualisation  "
           << params.encodeParameters.neighbourContextsEnabled << '\n';
      cout << "\t inferredDirectCodingMode    "
           << params.encodeParameters.inferredDirectCodingModeEnabled << '\n';
    }

    if (params.encodeParameters.geometryCodec == GeometryCodecType::kTriSoup) {
407
408
409
410
411
412
413
414
415
      cout << "\t triSoupDepth                " << params.encodeParameters.triSoup.depth << endl;
      cout << "\t triSoupLevel                " << params.encodeParameters.triSoup.level << endl;
      cout << "\t triSoupIntToOrigScale       " << params.encodeParameters.triSoup.intToOrigScale << endl;
      cout << "\t triSoupIntToOrigTranslation ";
      for (const auto tr : params.encodeParameters.triSoup.intToOrigTranslation) {
        cout << tr << " ";
      }
      cout << endl;
    }
416
    for (const auto & attributeEncodeParameters : params.encodeParameters.attributeEncodeParameters) {
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
417
      cout << "\t " << attributeEncodeParameters.first << endl;
418
419
      cout << "\t\t transformType                          "
           << attributeEncodeParameters.second.transformType << endl;
420
421
422
423
424
425

      if (attributeEncodeParameters.second.transformType == TransformType::kRAHT) {
        cout << "\t\t rahtQuantizationStep                   "
             << attributeEncodeParameters.second.quantizationStepRaht << endl;
        cout << "\t\t rahtDepth                              "
             << attributeEncodeParameters.second.depthRaht << endl;
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
426
      }
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444

      if (attributeEncodeParameters.second.transformType == TransformType::kIntegerLift) {
        cout << "\t\t numberOfNearestNeighborsInPrediction   "
             << attributeEncodeParameters.second.numberOfNearestNeighborsInPrediction << endl;
        cout << "\t\t searchRange                            "
             << attributeEncodeParameters.second.searchRange << endl;
        cout << "\t\t levelOfDetailCount                     "
             << attributeEncodeParameters.second.levelOfDetailCount << endl;
        cout << "\t\t dist2                                  ";
        for (const auto qs : attributeEncodeParameters.second.dist2) {
          cout << qs << " ";
        }
        cout << endl;
        cout << "\t\t quantizationSteps                      ";
        for (const auto qs : attributeEncodeParameters.second.quantizationSteps) {
          cout << qs << " ";
        }
        cout << endl;
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
445
446
447
      }
    }
    cout << endl;
448
  } else {
449
450
      cout << "\t roundOutputPositions        "
           << params.decodeParameters.roundOutputPositions << '\n';
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
451
452
453
454
  }

  return true;
}
455

456
int Compress(const Parameters &params, Stopwatch& clock) {
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
457
458
459
460
461
462
  PCCPointSet3 pointCloud;
  if (!pointCloud.read(params.uncompressedDataPath) || pointCloud.getPointCount() == 0) {
    cout << "Error: can't open input file!" << endl;
    return -1;
  }

463
464
  clock.start();

Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
465
466
467
468
469
470
471
  if (params.colorTransform == COLOR_TRANSFORM_RGB_TO_YCBCR) {
    pointCloud.convertRGBToYUV();
  }
  PCCTMC3Encoder3 encoder;
  PCCBitstream bitstream = {};
  const size_t predictedBitstreamSize =
      encoder.estimateBitstreamSize(pointCloud, params.encodeParameters);
472
  std::unique_ptr<uint8_t[]> buffer(new uint8_t[predictedBitstreamSize]);
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
473
474
475
476
477
478
479
480
481
  bitstream.buffer = buffer.get();
  bitstream.capacity = predictedBitstreamSize;
  bitstream.size = 0;

  std::unique_ptr<PCCPointSet3> reconstructedPointCloud;
  if (!params.reconstructedDataPath.empty()) {
    reconstructedPointCloud.reset(new PCCPointSet3);
  }

482
  int ret = encoder.compress(
483
484
485
      pointCloud, params.encodeParameters, bitstream,
      reconstructedPointCloud.get());
  if (ret) {
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
486
487
488
    cout << "Error: can't compress point cloud!" << endl;
    return -1;
  }
489

490
491
  clock.stop();

Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
  assert(bitstream.size <= bitstream.capacity);
  std::cout << "Total bitstream size " << bitstream.size << " B" << std::endl;
  ofstream fout(params.compressedStreamPath, ios::binary);
  if (!fout.is_open()) {
    return -1;
  }
  fout.write(reinterpret_cast<const char *>(bitstream.buffer), bitstream.size);
  fout.close();

  if (!params.reconstructedDataPath.empty()) {
    if (params.colorTransform == COLOR_TRANSFORM_RGB_TO_YCBCR) {
      reconstructedPointCloud->convertYUVToRGB();
    }
    reconstructedPointCloud->write(params.reconstructedDataPath, true);
  }

  return 0;
}
510
int Decompress(const Parameters &params, Stopwatch &clock) {
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
  PCCBitstream bitstream = {};
  ifstream fin(params.compressedStreamPath, ios::binary);
  if (!fin.is_open()) {
    return -1;
  }
  fin.seekg(0, std::ios::end);
  uint64_t bitStreamSize = fin.tellg();
  fin.seekg(0, std::ios::beg);
  unique_ptr<uint8_t[]> buffer(new uint8_t[bitStreamSize]);
  bitstream.buffer = buffer.get();
  bitstream.capacity = bitStreamSize;
  bitstream.size = 0;
  fin.read(reinterpret_cast<char *>(bitstream.buffer), bitStreamSize);
  if (!fin) {
    return -1;
  }
  fin.close();

529
530
  clock.start();

Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
531
532
  PCCTMC3Decoder3 decoder;
  PCCPointSet3 pointCloud;
533
534
535

  // read a priori geometry from input file for bypass case
  if (params.encodeParameters.geometryCodec == GeometryCodecType::kBypass) {
536
537
538
539
540
541
542
543
    if (!pointCloud.read(params.uncompressedDataPath) || pointCloud.getPointCount() == 0) {
      cout << "Error: can't open input file!" << endl;
      return -1;
    }
    pointCloud.removeReflectances();
    pointCloud.removeColors();
  }

544
  int ret = decoder.decompress(params.decodeParameters, bitstream, pointCloud);
545
  if (ret) {
Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
546
547
548
549
550
551
552
553
554
555
    cout << "Error: can't decompress point cloud!" << endl;
    return -1;
  }
  assert(bitstream.size <= bitstream.capacity);
  std::cout << "Total bitstream size " << bitstream.size << " B" << std::endl;

  if (params.colorTransform == COLOR_TRANSFORM_RGB_TO_YCBCR) {
    pointCloud.convertYUVToRGB();
  }

556
557
  clock.stop();

Khaled Mammou's avatar
TMC3v0  
Khaled Mammou committed
558
559
560
561
562
563
  if (!pointCloud.write(params.reconstructedDataPath, true)) {
    cout << "Error: can't open output file!" << endl;
    return -1;
  }
  return 0;
}