src/picture_asset.cc

   1 /*
   2     Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 /** @file  src/picture_asset.cc
  21  *  @brief An asset made up of JPEG2000 files
  22  */
  23
  24 #include <list>
  25 #include <stdexcept>
  26 #include <iostream>
  27 #include <sstream>
  28 #include <fstream>
  29 #include <boost/filesystem.hpp>
  30 #include <boost/lexical_cast.hpp>
  31 #include <openjpeg.h>
  32 #include "AS_DCP.h"
  33 #include "KM_fileio.h"
  34 #include "picture_asset.h"
  35 #include "util.h"
  36 #include "exceptions.h"
  37 #include "picture_frame.h"
  38
  39 using namespace std;
  40 using namespace boost;
  41 using namespace libdcp;
  42
  43 PictureAsset::PictureAsset (
  44         sigc::slot<string, int> get_path,
  45         string directory,
  46         string mxf_name,
  47         sigc::signal1<void, float>* progress,
  48         int fps,
  49         int length,
  50         int width,
  51         int height)
  52         : MXFAsset (directory, mxf_name, progress, fps, length)
  53         , _width (width)
  54         , _height (height)
  55 {
  56         construct (get_path);
  57 }
  58
  59 PictureAsset::PictureAsset (
  60         vector<string> const & files,
  61         string directory,
  62         string mxf_name,
  63         sigc::signal1<void, float>* progress,
  64         int fps,
  65         int length,
  66         int width,
  67         int height)
  68         : MXFAsset (directory, mxf_name, progress, fps, length)
  69         , _width (width)
  70         , _height (height)
  71 {
  72         construct (sigc::bind (sigc::mem_fun (*this, &PictureAsset::path_from_list), files));
  73 }
  74
  75 PictureAsset::PictureAsset (string directory, string mxf_name, int fps, int length)
  76         : MXFAsset (directory, mxf_name, 0, fps, length)
  77 {
  78         ASDCP::JP2K::MXFReader reader;
  79         if (ASDCP_FAILURE (reader.OpenRead (path().string().c_str()))) {
  80                 throw FileError ("could not open MXF file for reading", path().string());
  81         }
  82
  83         ASDCP::JP2K::PictureDescriptor desc;
  84         if (ASDCP_FAILURE (reader.FillPictureDescriptor (desc))) {
  85                 throw DCPReadError ("could not read video MXF information");
  86         }
  87
  88         _width = desc.StoredWidth;
  89         _height = desc.StoredHeight;
  90
  91 }
  92
  93 string
  94 PictureAsset::path_from_list (int f, vector<string> const & files) const
  95 {
  96         return files[f];
  97 }
  98
  99 void
 100 PictureAsset::construct (sigc::slot<string, int> get_path)
 101 {
 102         ASDCP::JP2K::CodestreamParser j2k_parser;
 103         ASDCP::JP2K::FrameBuffer frame_buffer (4 * Kumu::Megabyte);
 104         if (ASDCP_FAILURE (j2k_parser.OpenReadFrame (get_path(0).c_str(), frame_buffer))) {
 105                 throw FileError ("could not open JPEG2000 file for reading", get_path (0));
 106         }
 107
 108         ASDCP::JP2K::PictureDescriptor picture_desc;
 109         j2k_parser.FillPictureDescriptor (picture_desc);
 110         picture_desc.EditRate = ASDCP::Rational (_fps, 1);
 111
 112         ASDCP::WriterInfo writer_info;
 113         fill_writer_info (&writer_info);
 114
 115         ASDCP::JP2K::MXFWriter mxf_writer;
 116         if (ASDCP_FAILURE (mxf_writer.OpenWrite (path().string().c_str(), writer_info, picture_desc))) {
 117                 throw FileError ("could not open MXF file for writing", path().string());
 118         }
 119
 120         for (int i = 0; i < _length; ++i) {
 121
 122                 string const path = get_path (i);
 123
 124                 if (ASDCP_FAILURE (j2k_parser.OpenReadFrame (path.c_str(), frame_buffer))) {
 125                         throw FileError ("could not open JPEG2000 file for reading", path);
 126                 }
 127
 128                 /* XXX: passing 0 to WriteFrame ok? */
 129                 if (ASDCP_FAILURE (mxf_writer.WriteFrame (frame_buffer, 0, 0))) {
 130                         throw MiscError ("error in writing video MXF");
 131                 }
 132
 133                 (*_progress) (0.5 * float (i) / _length);
 134         }
 135
 136         if (ASDCP_FAILURE (mxf_writer.Finalize())) {
 137                 throw MiscError ("error in finalising video MXF");
 138         }
 139 }
 140
 141 void
 142 PictureAsset::write_to_cpl (ostream& s) const
 143 {
 144         s << "        <MainPicture>\n"
 145           << "          <Id>urn:uuid:" << _uuid << "</Id>\n"
 146           << "          <AnnotationText>" << _file_name << "</AnnotationText>\n"
 147           << "          <EditRate>" << _fps << " 1</EditRate>\n"
 148           << "          <IntrinsicDuration>" << _length << "</IntrinsicDuration>\n"
 149           << "          <EntryPoint>0</EntryPoint>\n"
 150           << "          <Duration>" << _length << "</Duration>\n"
 151           << "          <FrameRate>" << _fps << " 1</FrameRate>\n"
 152           << "          <ScreenAspectRatio>" << _width << " " << _height << "</ScreenAspectRatio>\n"
 153           << "        </MainPicture>\n";
 154 }
 155
 156 /* XXX: could use get_frame()? */
 157 list<string>
 158 PictureAsset::equals (shared_ptr<const Asset> other, EqualityOptions opt) const
 159 {
 160         list<string> notes = MXFAsset::equals (other, opt);
 161
 162         if (opt.flags & MXF_INSPECT) {
 163                 ASDCP::JP2K::MXFReader reader_A;
 164                 if (ASDCP_FAILURE (reader_A.OpenRead (path().string().c_str()))) {
 165                         throw FileError ("could not open MXF file for reading", path().string());
 166                 }
 167
 168                 ASDCP::JP2K::MXFReader reader_B;
 169                 if (ASDCP_FAILURE (reader_B.OpenRead (other->path().string().c_str()))) {
 170                         throw FileError ("could not open MXF file for reading", path().string());
 171                 }
 172
 173                 ASDCP::JP2K::PictureDescriptor desc_A;
 174                 if (ASDCP_FAILURE (reader_A.FillPictureDescriptor (desc_A))) {
 175                         throw DCPReadError ("could not read video MXF information");
 176                 }
 177                 ASDCP::JP2K::PictureDescriptor desc_B;
 178                 if (ASDCP_FAILURE (reader_B.FillPictureDescriptor (desc_B))) {
 179                         throw DCPReadError ("could not read video MXF information");
 180                 }
 181
 182                 if (
 183                         desc_A.EditRate != desc_B.EditRate ||
 184                         desc_A.ContainerDuration != desc_B.ContainerDuration ||
 185                         desc_A.SampleRate != desc_B.SampleRate ||
 186                         desc_A.StoredWidth != desc_B.StoredWidth ||
 187                         desc_A.StoredHeight != desc_B.StoredHeight ||
 188                         desc_A.AspectRatio != desc_B.AspectRatio ||
 189                         desc_A.Rsize != desc_B.Rsize ||
 190                         desc_A.Xsize != desc_B.Xsize ||
 191                         desc_A.Ysize != desc_B.Ysize ||
 192                         desc_A.XOsize != desc_B.XOsize ||
 193                         desc_A.YOsize != desc_B.YOsize ||
 194                         desc_A.XTsize != desc_B.XTsize ||
 195                         desc_A.YTsize != desc_B.YTsize ||
 196                         desc_A.XTOsize != desc_B.XTOsize ||
 197                         desc_A.YTOsize != desc_B.YTOsize ||
 198                         desc_A.Csize != desc_B.Csize
 199 //                      desc_A.CodingStyleDefault != desc_B.CodingStyleDefault ||
 200 //                      desc_A.QuantizationDefault != desc_B.QuantizationDefault
 201                         ) {
 202
 203                         notes.push_back ("video MXF picture descriptors differ");
 204                 }
 205
 206 //              for (unsigned int j = 0; j < ASDCP::JP2K::MaxComponents; ++j) {
 207 //                      if (desc_A.ImageComponents[j] != desc_B.ImageComponents[j]) {
 208 //                              notes.pack_start ("video MXF picture descriptors differ");
 209 //                      }
 210 //              }
 211
 212
 213                 ASDCP::JP2K::FrameBuffer buffer_A (4 * Kumu::Megabyte);
 214                 ASDCP::JP2K::FrameBuffer buffer_B (4 * Kumu::Megabyte);
 215
 216                 for (int i = 0; i < _length; ++i) {
 217                         if (ASDCP_FAILURE (reader_A.ReadFrame (i, buffer_A))) {
 218                                 throw DCPReadError ("could not read video frame");
 219                         }
 220
 221                         if (ASDCP_FAILURE (reader_B.ReadFrame (i, buffer_B))) {
 222                                 throw DCPReadError ("could not read video frame");
 223                         }
 224
 225                         bool j2k_same = true;
 226
 227                         if (buffer_A.Size() != buffer_B.Size()) {
 228                                 notes.push_back ("sizes of video data for frame " + lexical_cast<string>(i) + " differ");
 229                                 j2k_same = false;
 230                         } else if (memcmp (buffer_A.RoData(), buffer_B.RoData(), buffer_A.Size()) != 0) {
 231                                 notes.push_back ("J2K data for frame " + lexical_cast<string>(i) + " differ");
 232                                 j2k_same = false;
 233                         }
 234
 235                         if (!j2k_same) {
 236
 237                                 if (opt.verbose) {
 238                                         cout << "J2K images for " << i << " differ; checking by pixel\n";
 239                                 }
 240
 241                                 /* Decompress the images to bitmaps */
 242                                 opj_image_t* image_A = decompress_j2k (const_cast<uint8_t*> (buffer_A.RoData()), buffer_A.Size ());
 243                                 opj_image_t* image_B = decompress_j2k (const_cast<uint8_t*> (buffer_B.RoData()), buffer_B.Size ());
 244
 245                                 /* Compare them */
 246
 247                                 if (image_A->numcomps != image_B->numcomps) {
 248                                         notes.push_back ("image component counts for frame " + lexical_cast<string>(i) + " differ");
 249                                 }
 250
 251                                 vector<int> abs_diffs (image_A->comps[0].w * image_A->comps[0].h * image_A->numcomps);
 252                                 int d = 0;
 253                                 int max_diff = 0;
 254
 255                                 for (int c = 0; c < image_A->numcomps; ++c) {
 256
 257                                         if (image_A->comps[c].w != image_B->comps[c].w || image_A->comps[c].h != image_B->comps[c].h) {
 258                                                 notes.push_back ("image sizes for frame " + lexical_cast<string>(i) + " differ");
 259                                         }
 260
 261                                         int const pixels = image_A->comps[c].w * image_A->comps[c].h;
 262                                         for (int j = 0; j < pixels; ++j) {
 263                                                 int const t = abs (image_A->comps[c].data[j] - image_B->comps[c].data[j]);
 264                                                 abs_diffs[d++] = t;
 265                                                 max_diff = max (max_diff, t);
 266                                         }
 267                                 }
 268
 269                                 uint64_t total = 0;
 270                                 for (vector<int>::iterator j = abs_diffs.begin(); j != abs_diffs.end(); ++j) {
 271                                         total += *j;
 272                                 }
 273
 274                                 double const mean = double (total) / abs_diffs.size ();
 275
 276                                 uint64_t total_squared_deviation = 0;
 277                                 for (vector<int>::iterator j = abs_diffs.begin(); j != abs_diffs.end(); ++j) {
 278                                         total_squared_deviation += pow (*j - mean, 2);
 279                                 }
 280
 281                                 double const std_dev = sqrt (double (total_squared_deviation) / abs_diffs.size());
 282
 283                                 if (mean > opt.max_mean_pixel_error || std_dev > opt.max_std_dev_pixel_error) {
 284                                         notes.push_back ("mean or standard deviation out of range for " + lexical_cast<string>(i));
 285                                 }
 286
 287                                 if (opt.verbose) {
 288                                         cout << "\tmax pixel error " << max_diff << ", mean pixel error " << mean << ", standard deviation " << std_dev << "\n";
 289                                 }
 290
 291                                 opj_image_destroy (image_A);
 292                                 opj_image_destroy (image_B);
 293                         }
 294                 }
 295         }
 296
 297         return notes;
 298 }
 299
 300 opj_image_t *
 301 PictureAsset::decompress_j2k (uint8_t* data, int64_t size) const
 302 {
 303         opj_dinfo_t* decoder = opj_create_decompress (CODEC_J2K);
 304         opj_dparameters_t parameters;
 305         opj_set_default_decoder_parameters (&parameters);
 306         opj_setup_decoder (decoder, &parameters);
 307         opj_cio_t* cio = opj_cio_open ((opj_common_ptr) decoder, data, size);
 308         opj_image_t* image = opj_decode (decoder, cio);
 309         if (!image) {
 310                 opj_destroy_decompress (decoder);
 311                 opj_cio_close (cio);
 312                 throw DCPReadError ("could not decode JPEG2000 codestream");
 313         }
 314
 315         opj_cio_close (cio);
 316         return image;
 317 }
 318
 319 shared_ptr<const PictureFrame>
 320 PictureAsset::get_frame (int n) const
 321 {
 322         return shared_ptr<const PictureFrame> (new PictureFrame (path().string(), n));
 323 }