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
  38 using namespace std;
  39 using namespace boost;
  40 using namespace libdcp;
  41
  42 PictureAsset::PictureAsset (
  43         sigc::slot<string, int> get_path,
  44         string directory,
  45         string mxf_name,
  46         sigc::signal1<void, float>* progress,
  47         int fps,
  48         int length,
  49         int width,
  50         int height)
  51         : Asset (directory, mxf_name, progress, fps, length)
  52         , _width (width)
  53         , _height (height)
  54 {
  55         construct (get_path);
  56 }
  57
  58 PictureAsset::PictureAsset (
  59         vector<string> const & files,
  60         string directory,
  61         string mxf_name,
  62         sigc::signal1<void, float>* progress,
  63         int fps,
  64         int length,
  65         int width,
  66         int height)
  67         : Asset (directory, mxf_name, progress, fps, length)
  68         , _width (width)
  69         , _height (height)
  70 {
  71         construct (sigc::bind (sigc::mem_fun (*this, &PictureAsset::path_from_list), files));
  72 }
  73
  74 PictureAsset::PictureAsset (string directory, string mxf_name, int fps, int length, int width, int height)
  75         : Asset (directory, mxf_name, 0, fps, length)
  76         , _width (width)
  77         , _height (height)
  78 {
  79
  80 }
  81
  82 string
  83 PictureAsset::path_from_list (int f, vector<string> const & files) const
  84 {
  85         return files[f];
  86 }
  87
  88 void
  89 PictureAsset::construct (sigc::slot<string, int> get_path)
  90 {
  91         ASDCP::JP2K::CodestreamParser j2k_parser;
  92         ASDCP::JP2K::FrameBuffer frame_buffer (4 * Kumu::Megabyte);
  93         if (ASDCP_FAILURE (j2k_parser.OpenReadFrame (get_path(0).c_str(), frame_buffer))) {
  94                 throw FileError ("could not open JPEG2000 file for reading", get_path (0));
  95         }
  96
  97         ASDCP::JP2K::PictureDescriptor picture_desc;
  98         j2k_parser.FillPictureDescriptor (picture_desc);
  99         picture_desc.EditRate = ASDCP::Rational (_fps, 1);
 100
 101         ASDCP::WriterInfo writer_info;
 102         fill_writer_info (&writer_info);
 103
 104         ASDCP::JP2K::MXFWriter mxf_writer;
 105         if (ASDCP_FAILURE (mxf_writer.OpenWrite (mxf_path().string().c_str(), writer_info, picture_desc))) {
 106                 throw FileError ("could not open MXF file for writing", mxf_path().string());
 107         }
 108
 109         for (int i = 0; i < _length; ++i) {
 110
 111                 string const path = get_path (i);
 112
 113                 if (ASDCP_FAILURE (j2k_parser.OpenReadFrame (path.c_str(), frame_buffer))) {
 114                         throw FileError ("could not open JPEG2000 file for reading", path);
 115                 }
 116
 117                 /* XXX: passing 0 to WriteFrame ok? */
 118                 if (ASDCP_FAILURE (mxf_writer.WriteFrame (frame_buffer, 0, 0))) {
 119                         throw MiscError ("error in writing video MXF");
 120                 }
 121
 122                 (*_progress) (0.5 * float (i) / _length);
 123         }
 124
 125         if (ASDCP_FAILURE (mxf_writer.Finalize())) {
 126                 throw MiscError ("error in finalising video MXF");
 127         }
 128 }
 129
 130 void
 131 PictureAsset::write_to_cpl (ostream& s) const
 132 {
 133         s << "        <MainPicture>\n"
 134           << "          <Id>urn:uuid:" << _uuid << "</Id>\n"
 135           << "          <AnnotationText>" << _mxf_name << "</AnnotationText>\n"
 136           << "          <EditRate>" << _fps << " 1</EditRate>\n"
 137           << "          <IntrinsicDuration>" << _length << "</IntrinsicDuration>\n"
 138           << "          <EntryPoint>0</EntryPoint>\n"
 139           << "          <Duration>" << _length << "</Duration>\n"
 140           << "          <FrameRate>" << _fps << " 1</FrameRate>\n"
 141           << "          <ScreenAspectRatio>" << _width << " " << _height << "</ScreenAspectRatio>\n"
 142           << "        </MainPicture>\n";
 143 }
 144
 145 list<string>
 146 PictureAsset::equals (shared_ptr<const Asset> other, EqualityOptions opt) const
 147 {
 148         list<string> notes = Asset::equals (other, opt);
 149
 150         if (opt.flags & MXF_INSPECT) {
 151                 ASDCP::JP2K::MXFReader reader_A;
 152                 if (ASDCP_FAILURE (reader_A.OpenRead (mxf_path().string().c_str()))) {
 153                         throw FileError ("could not open MXF file for reading", mxf_path().string());
 154                 }
 155
 156                 ASDCP::JP2K::MXFReader reader_B;
 157                 if (ASDCP_FAILURE (reader_B.OpenRead (other->mxf_path().string().c_str()))) {
 158                         throw FileError ("could not open MXF file for reading", mxf_path().string());
 159                 }
 160
 161                 ASDCP::JP2K::PictureDescriptor desc_A;
 162                 if (ASDCP_FAILURE (reader_A.FillPictureDescriptor (desc_A))) {
 163                         throw DCPReadError ("could not read video MXF information");
 164                 }
 165                 ASDCP::JP2K::PictureDescriptor desc_B;
 166                 if (ASDCP_FAILURE (reader_B.FillPictureDescriptor (desc_B))) {
 167                         throw DCPReadError ("could not read video MXF information");
 168                 }
 169
 170                 if (
 171                         desc_A.EditRate != desc_B.EditRate ||
 172                         desc_A.ContainerDuration != desc_B.ContainerDuration ||
 173                         desc_A.SampleRate != desc_B.SampleRate ||
 174                         desc_A.StoredWidth != desc_B.StoredWidth ||
 175                         desc_A.StoredHeight != desc_B.StoredHeight ||
 176                         desc_A.AspectRatio != desc_B.AspectRatio ||
 177                         desc_A.Rsize != desc_B.Rsize ||
 178                         desc_A.Xsize != desc_B.Xsize ||
 179                         desc_A.Ysize != desc_B.Ysize ||
 180                         desc_A.XOsize != desc_B.XOsize ||
 181                         desc_A.YOsize != desc_B.YOsize ||
 182                         desc_A.XTsize != desc_B.XTsize ||
 183                         desc_A.YTsize != desc_B.YTsize ||
 184                         desc_A.XTOsize != desc_B.XTOsize ||
 185                         desc_A.YTOsize != desc_B.YTOsize ||
 186                         desc_A.Csize != desc_B.Csize
 187 //                      desc_A.CodingStyleDefault != desc_B.CodingStyleDefault ||
 188 //                      desc_A.QuantizationDefault != desc_B.QuantizationDefault
 189                         ) {
 190
 191                         notes.push_back ("video MXF picture descriptors differ");
 192                 }
 193
 194 //              for (unsigned int j = 0; j < ASDCP::JP2K::MaxComponents; ++j) {
 195 //                      if (desc_A.ImageComponents[j] != desc_B.ImageComponents[j]) {
 196 //                              notes.pack_start ("video MXF picture descriptors differ");
 197 //                      }
 198 //              }
 199
 200
 201                 ASDCP::JP2K::FrameBuffer buffer_A (4 * Kumu::Megabyte);
 202                 ASDCP::JP2K::FrameBuffer buffer_B (4 * Kumu::Megabyte);
 203
 204                 for (int i = 0; i < _length; ++i) {
 205                         if (ASDCP_FAILURE (reader_A.ReadFrame (i, buffer_A))) {
 206                                 throw DCPReadError ("could not read video frame");
 207                         }
 208
 209                         if (ASDCP_FAILURE (reader_B.ReadFrame (i, buffer_B))) {
 210                                 throw DCPReadError ("could not read video frame");
 211                         }
 212
 213                         bool j2k_same = true;
 214
 215                         if (buffer_A.Size() != buffer_B.Size()) {
 216                                 notes.push_back ("sizes of video data for frame " + lexical_cast<string>(i) + " differ");
 217                                 j2k_same = false;
 218                         } else if (memcmp (buffer_A.RoData(), buffer_B.RoData(), buffer_A.Size()) != 0) {
 219                                 notes.push_back ("J2K data for frame " + lexical_cast<string>(i) + " differ");
 220                                 j2k_same = false;
 221                         }
 222
 223                         if (!j2k_same) {
 224
 225                                 if (opt.verbose) {
 226                                         cout << "J2K images for " << i << " differ; checking by pixel\n";
 227                                 }
 228
 229                                 /* Decompress the images to bitmaps */
 230                                 opj_image_t* image_A = decompress_j2k (const_cast<uint8_t*> (buffer_A.RoData()), buffer_A.Size ());
 231                                 opj_image_t* image_B = decompress_j2k (const_cast<uint8_t*> (buffer_B.RoData()), buffer_B.Size ());
 232
 233                                 /* Compare them */
 234
 235                                 if (image_A->numcomps != image_B->numcomps) {
 236                                         notes.push_back ("image component counts for frame " + lexical_cast<string>(i) + " differ");
 237                                 }
 238
 239                                 vector<int> abs_diffs (image_A->comps[0].w * image_A->comps[0].h * image_A->numcomps);
 240                                 int d = 0;
 241
 242                                 for (int c = 0; c < image_A->numcomps; ++c) {
 243
 244                                         if (image_A->comps[c].w != image_B->comps[c].w || image_A->comps[c].h != image_B->comps[c].h) {
 245                                                 notes.push_back ("image sizes for frame " + lexical_cast<string>(i) + " differ");
 246                                         }
 247
 248                                         int const pixels = image_A->comps[c].w * image_A->comps[c].h;
 249                                         for (int j = 0; j < pixels; ++j) {
 250                                                 abs_diffs[d++] = abs (image_A->comps[c].data[j] - image_B->comps[c].data[j]);
 251                                         }
 252                                 }
 253
 254                                 uint64_t total = 0;
 255                                 for (vector<int>::iterator j = abs_diffs.begin(); j != abs_diffs.end(); ++j) {
 256                                         total += *j;
 257                                 }
 258
 259                                 double const mean = double (total) / abs_diffs.size ();
 260
 261                                 uint64_t total_squared_deviation = 0;
 262                                 for (vector<int>::iterator j = abs_diffs.begin(); j != abs_diffs.end(); ++j) {
 263                                         total_squared_deviation += pow (*j - mean, 2);
 264                                 }
 265
 266                                 double const std_dev = sqrt (double (total_squared_deviation) / abs_diffs.size());
 267
 268                                 if (mean > opt.max_mean_pixel_error || std_dev > opt.max_std_dev_pixel_error) {
 269                                         notes.push_back ("mean or standard deviation out of range for " + lexical_cast<string>(i));
 270                                 }
 271
 272                                 if (opt.verbose) {
 273                                         cout << "\tmean pixel error " << mean << ", standard deviation " << std_dev << "\n";
 274                                 }
 275
 276                                 opj_image_destroy (image_A);
 277                                 opj_image_destroy (image_B);
 278                         }
 279                 }
 280         }
 281
 282         return notes;
 283 }
 284
 285 opj_image_t *
 286 PictureAsset::decompress_j2k (uint8_t* data, int64_t size) const
 287 {
 288         opj_dinfo_t* decoder = opj_create_decompress (CODEC_J2K);
 289         opj_dparameters_t parameters;
 290         opj_set_default_decoder_parameters (&parameters);
 291         opj_setup_decoder (decoder, &parameters);
 292         opj_cio_t* cio = opj_cio_open ((opj_common_ptr) decoder, data, size);
 293         opj_image_t* image = opj_decode (decoder, cio);
 294         if (!image) {
 295                 opj_destroy_decompress (decoder);
 296                 opj_cio_close (cio);
 297                 throw DCPReadError ("could not decode JPEG2000 codestream");
 298         }
 299
 300         opj_cio_close (cio);
 301         return image;
 302 }