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         : Asset (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         : Asset (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, int width, int height)
  76         : Asset (directory, mxf_name, 0, fps, length)
  77         , _width (width)
  78         , _height (height)
  79 {
  80
  81 }
  82
  83 string
  84 PictureAsset::path_from_list (int f, vector<string> const & files) const
  85 {
  86         return files[f];
  87 }
  88
  89 void
  90 PictureAsset::construct (sigc::slot<string, int> get_path)
  91 {
  92         ASDCP::JP2K::CodestreamParser j2k_parser;
  93         ASDCP::JP2K::FrameBuffer frame_buffer (4 * Kumu::Megabyte);
  94         if (ASDCP_FAILURE (j2k_parser.OpenReadFrame (get_path(0).c_str(), frame_buffer))) {
  95                 throw FileError ("could not open JPEG2000 file for reading", get_path (0));
  96         }
  97
  98         ASDCP::JP2K::PictureDescriptor picture_desc;
  99         j2k_parser.FillPictureDescriptor (picture_desc);
 100         picture_desc.EditRate = ASDCP::Rational (_fps, 1);
 101
 102         ASDCP::WriterInfo writer_info;
 103         fill_writer_info (&writer_info);
 104
 105         ASDCP::JP2K::MXFWriter mxf_writer;
 106         if (ASDCP_FAILURE (mxf_writer.OpenWrite (mxf_path().string().c_str(), writer_info, picture_desc))) {
 107                 throw FileError ("could not open MXF file for writing", mxf_path().string());
 108         }
 109
 110         for (int i = 0; i < _length; ++i) {
 111
 112                 string const path = get_path (i);
 113
 114                 if (ASDCP_FAILURE (j2k_parser.OpenReadFrame (path.c_str(), frame_buffer))) {
 115                         throw FileError ("could not open JPEG2000 file for reading", path);
 116                 }
 117
 118                 /* XXX: passing 0 to WriteFrame ok? */
 119                 if (ASDCP_FAILURE (mxf_writer.WriteFrame (frame_buffer, 0, 0))) {
 120                         throw MiscError ("error in writing video MXF");
 121                 }
 122
 123                 (*_progress) (0.5 * float (i) / _length);
 124         }
 125
 126         if (ASDCP_FAILURE (mxf_writer.Finalize())) {
 127                 throw MiscError ("error in finalising video MXF");
 128         }
 129 }
 130
 131 void
 132 PictureAsset::write_to_cpl (ostream& s) const
 133 {
 134         s << "        <MainPicture>\n"
 135           << "          <Id>urn:uuid:" << _uuid << "</Id>\n"
 136           << "          <AnnotationText>" << _mxf_name << "</AnnotationText>\n"
 137           << "          <EditRate>" << _fps << " 1</EditRate>\n"
 138           << "          <IntrinsicDuration>" << _length << "</IntrinsicDuration>\n"
 139           << "          <EntryPoint>0</EntryPoint>\n"
 140           << "          <Duration>" << _length << "</Duration>\n"
 141           << "          <FrameRate>" << _fps << " 1</FrameRate>\n"
 142           << "          <ScreenAspectRatio>" << _width << " " << _height << "</ScreenAspectRatio>\n"
 143           << "        </MainPicture>\n";
 144 }
 145
 146 /* XXX: could use get_frame()? */
 147 list<string>
 148 PictureAsset::equals (shared_ptr<const Asset> other, EqualityOptions opt) const
 149 {
 150         list<string> notes = Asset::equals (other, opt);
 151
 152         if (opt.flags & MXF_INSPECT) {
 153                 ASDCP::JP2K::MXFReader reader_A;
 154                 if (ASDCP_FAILURE (reader_A.OpenRead (mxf_path().string().c_str()))) {
 155                         throw FileError ("could not open MXF file for reading", mxf_path().string());
 156                 }
 157
 158                 ASDCP::JP2K::MXFReader reader_B;
 159                 if (ASDCP_FAILURE (reader_B.OpenRead (other->mxf_path().string().c_str()))) {
 160                         throw FileError ("could not open MXF file for reading", mxf_path().string());
 161                 }
 162
 163                 ASDCP::JP2K::PictureDescriptor desc_A;
 164                 if (ASDCP_FAILURE (reader_A.FillPictureDescriptor (desc_A))) {
 165                         throw DCPReadError ("could not read video MXF information");
 166                 }
 167                 ASDCP::JP2K::PictureDescriptor desc_B;
 168                 if (ASDCP_FAILURE (reader_B.FillPictureDescriptor (desc_B))) {
 169                         throw DCPReadError ("could not read video MXF information");
 170                 }
 171
 172                 if (
 173                         desc_A.EditRate != desc_B.EditRate ||
 174                         desc_A.ContainerDuration != desc_B.ContainerDuration ||
 175                         desc_A.SampleRate != desc_B.SampleRate ||
 176                         desc_A.StoredWidth != desc_B.StoredWidth ||
 177                         desc_A.StoredHeight != desc_B.StoredHeight ||
 178                         desc_A.AspectRatio != desc_B.AspectRatio ||
 179                         desc_A.Rsize != desc_B.Rsize ||
 180                         desc_A.Xsize != desc_B.Xsize ||
 181                         desc_A.Ysize != desc_B.Ysize ||
 182                         desc_A.XOsize != desc_B.XOsize ||
 183                         desc_A.YOsize != desc_B.YOsize ||
 184                         desc_A.XTsize != desc_B.XTsize ||
 185                         desc_A.YTsize != desc_B.YTsize ||
 186                         desc_A.XTOsize != desc_B.XTOsize ||
 187                         desc_A.YTOsize != desc_B.YTOsize ||
 188                         desc_A.Csize != desc_B.Csize
 189 //                      desc_A.CodingStyleDefault != desc_B.CodingStyleDefault ||
 190 //                      desc_A.QuantizationDefault != desc_B.QuantizationDefault
 191                         ) {
 192
 193                         notes.push_back ("video MXF picture descriptors differ");
 194                 }
 195
 196 //              for (unsigned int j = 0; j < ASDCP::JP2K::MaxComponents; ++j) {
 197 //                      if (desc_A.ImageComponents[j] != desc_B.ImageComponents[j]) {
 198 //                              notes.pack_start ("video MXF picture descriptors differ");
 199 //                      }
 200 //              }
 201
 202
 203                 ASDCP::JP2K::FrameBuffer buffer_A (4 * Kumu::Megabyte);
 204                 ASDCP::JP2K::FrameBuffer buffer_B (4 * Kumu::Megabyte);
 205
 206                 for (int i = 0; i < _length; ++i) {
 207                         if (ASDCP_FAILURE (reader_A.ReadFrame (i, buffer_A))) {
 208                                 throw DCPReadError ("could not read video frame");
 209                         }
 210
 211                         if (ASDCP_FAILURE (reader_B.ReadFrame (i, buffer_B))) {
 212                                 throw DCPReadError ("could not read video frame");
 213                         }
 214
 215                         bool j2k_same = true;
 216
 217                         if (buffer_A.Size() != buffer_B.Size()) {
 218                                 notes.push_back ("sizes of video data for frame " + lexical_cast<string>(i) + " differ");
 219                                 j2k_same = false;
 220                         } else if (memcmp (buffer_A.RoData(), buffer_B.RoData(), buffer_A.Size()) != 0) {
 221                                 notes.push_back ("J2K data for frame " + lexical_cast<string>(i) + " differ");
 222                                 j2k_same = false;
 223                         }
 224
 225                         if (!j2k_same) {
 226
 227                                 if (opt.verbose) {
 228                                         cout << "J2K images for " << i << " differ; checking by pixel\n";
 229                                 }
 230
 231                                 /* Decompress the images to bitmaps */
 232                                 opj_image_t* image_A = decompress_j2k (const_cast<uint8_t*> (buffer_A.RoData()), buffer_A.Size ());
 233                                 opj_image_t* image_B = decompress_j2k (const_cast<uint8_t*> (buffer_B.RoData()), buffer_B.Size ());
 234
 235                                 /* Compare them */
 236
 237                                 if (image_A->numcomps != image_B->numcomps) {
 238                                         notes.push_back ("image component counts for frame " + lexical_cast<string>(i) + " differ");
 239                                 }
 240
 241                                 vector<int> abs_diffs (image_A->comps[0].w * image_A->comps[0].h * image_A->numcomps);
 242                                 int d = 0;
 243                                 int max_diff = 0;
 244
 245                                 for (int c = 0; c < image_A->numcomps; ++c) {
 246
 247                                         if (image_A->comps[c].w != image_B->comps[c].w || image_A->comps[c].h != image_B->comps[c].h) {
 248                                                 notes.push_back ("image sizes for frame " + lexical_cast<string>(i) + " differ");
 249                                         }
 250
 251                                         int const pixels = image_A->comps[c].w * image_A->comps[c].h;
 252                                         for (int j = 0; j < pixels; ++j) {
 253                                                 int const t = abs (image_A->comps[c].data[j] - image_B->comps[c].data[j]);
 254                                                 abs_diffs[d++] = t;
 255                                                 max_diff = max (max_diff, t);
 256                                         }
 257                                 }
 258
 259                                 uint64_t total = 0;
 260                                 for (vector<int>::iterator j = abs_diffs.begin(); j != abs_diffs.end(); ++j) {
 261                                         total += *j;
 262                                 }
 263
 264                                 double const mean = double (total) / abs_diffs.size ();
 265
 266                                 uint64_t total_squared_deviation = 0;
 267                                 for (vector<int>::iterator j = abs_diffs.begin(); j != abs_diffs.end(); ++j) {
 268                                         total_squared_deviation += pow (*j - mean, 2);
 269                                 }
 270
 271                                 double const std_dev = sqrt (double (total_squared_deviation) / abs_diffs.size());
 272
 273                                 if (mean > opt.max_mean_pixel_error || std_dev > opt.max_std_dev_pixel_error) {
 274                                         notes.push_back ("mean or standard deviation out of range for " + lexical_cast<string>(i));
 275                                 }
 276
 277                                 if (opt.verbose) {
 278                                         cout << "\tmax pixel error " << max_diff << ", mean pixel error " << mean << ", standard deviation " << std_dev << "\n";
 279                                 }
 280
 281                                 opj_image_destroy (image_A);
 282                                 opj_image_destroy (image_B);
 283                         }
 284                 }
 285         }
 286
 287         return notes;
 288 }
 289
 290 opj_image_t *
 291 PictureAsset::decompress_j2k (uint8_t* data, int64_t size) const
 292 {
 293         opj_dinfo_t* decoder = opj_create_decompress (CODEC_J2K);
 294         opj_dparameters_t parameters;
 295         opj_set_default_decoder_parameters (&parameters);
 296         opj_setup_decoder (decoder, &parameters);
 297         opj_cio_t* cio = opj_cio_open ((opj_common_ptr) decoder, data, size);
 298         opj_image_t* image = opj_decode (decoder, cio);
 299         if (!image) {
 300                 opj_destroy_decompress (decoder);
 301                 opj_cio_close (cio);
 302                 throw DCPReadError ("could not decode JPEG2000 codestream");
 303         }
 304
 305         opj_cio_close (cio);
 306         return image;
 307 }
 308
 309 shared_ptr<const PictureFrame>
 310 PictureAsset::get_frame (int n) const
 311 {
 312         return shared_ptr<const PictureFrame> (new PictureFrame (mxf_path().string(), n));
 313 }