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/*
Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
This file is part of libdcp.
libdcp is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
libdcp is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with libdcp. If not, see <http://www.gnu.org/licenses/>.
In addition, as a special exception, the copyright holders give
permission to link the code of portions of this program with the
OpenSSL library under certain conditions as described in each
individual source file, and distribute linked combinations
including the two.
You must obey the GNU General Public License in all respects
for all of the code used other than OpenSSL. If you modify
file(s) with this exception, you may extend this exception to your
version of the file(s), but you are not obligated to do so. If you
do not wish to do so, delete this exception statement from your
version. If you delete this exception statement from all source
files in the program, then also delete it here.
*/
#include "picture_asset.h"
#include "util.h"
#include "exceptions.h"
#include "openjpeg_image.h"
#include "picture_asset_writer.h"
#include "dcp_assert.h"
#include "compose.hpp"
#include "j2k.h"
#include <asdcp/AS_DCP.h>
#include <asdcp/KM_fileio.h>
#include <libxml++/nodes/element.h>
#include <boost/filesystem.hpp>
#include <list>
#include <stdexcept>
using std::string;
using std::list;
using std::vector;
using std::max;
using std::pair;
using std::make_pair;
using boost::shared_ptr;
using namespace dcp;
/** Load a PictureAsset from a file */
PictureAsset::PictureAsset (boost::filesystem::path file)
: Asset (file)
, _intrinsic_duration (0)
{
}
/** Create a new PictureAsset with a given edit rate and standard */
PictureAsset::PictureAsset (Fraction edit_rate, Standard standard)
: MXF (standard)
, _edit_rate (edit_rate)
, _intrinsic_duration (0)
{
}
void
PictureAsset::read_picture_descriptor (ASDCP::JP2K::PictureDescriptor const & desc)
{
_size.width = desc.StoredWidth;
_size.height = desc.StoredHeight;
_edit_rate = Fraction (desc.EditRate.Numerator, desc.EditRate.Denominator);
_intrinsic_duration = desc.ContainerDuration;
_frame_rate = Fraction (desc.SampleRate.Numerator, desc.SampleRate.Denominator);
_screen_aspect_ratio = Fraction (desc.AspectRatio.Numerator, desc.AspectRatio.Denominator);
}
bool
PictureAsset::descriptor_equals (
ASDCP::JP2K::PictureDescriptor const & a, ASDCP::JP2K::PictureDescriptor const & b, NoteHandler note
) const
{
if (
a.EditRate != b.EditRate ||
a.SampleRate != b.SampleRate ||
a.StoredWidth != b.StoredWidth ||
a.StoredHeight != b.StoredHeight ||
a.AspectRatio != b.AspectRatio ||
a.Rsize != b.Rsize ||
a.Xsize != b.Xsize ||
a.Ysize != b.Ysize ||
a.XOsize != b.XOsize ||
a.YOsize != b.YOsize ||
a.XTsize != b.XTsize ||
a.YTsize != b.YTsize ||
a.XTOsize != b.XTOsize ||
a.YTOsize != b.YTOsize ||
a.Csize != b.Csize
// a.CodingStyleDefault != b.CodingStyleDefault ||
// a.QuantizationDefault != b.QuantizationDefault
) {
note (DCP_ERROR, "video MXF picture descriptors differ");
return false;
}
if (a.ContainerDuration != b.ContainerDuration) {
note (DCP_ERROR, "video container durations differ");
}
// for (unsigned int j = 0; j < ASDCP::JP2K::MaxComponents; ++j) {
// if (a.ImageComponents[j] != b.ImageComponents[j]) {
// notes.pack_start ("video MXF picture descriptors differ");
// }
// }
return true;
}
bool
PictureAsset::frame_buffer_equals (
int frame, EqualityOptions opt, NoteHandler note,
uint8_t const * data_A, unsigned int size_A, uint8_t const * data_B, unsigned int size_B
) const
{
if (size_A == size_B && memcmp (data_A, data_B, size_A) == 0) {
note (DCP_NOTE, "J2K identical");
/* Easy result; the J2K data is identical */
return true;
}
/* Decompress the images to bitmaps */
shared_ptr<OpenJPEGImage> image_A = decompress_j2k (const_cast<uint8_t*> (data_A), size_A, 0);
shared_ptr<OpenJPEGImage> image_B = decompress_j2k (const_cast<uint8_t*> (data_B), size_B, 0);
/* Compare them */
vector<int> abs_diffs (image_A->size().width * image_A->size().height * 3);
int d = 0;
int max_diff = 0;
for (int c = 0; c < 3; ++c) {
if (image_A->size() != image_B->size()) {
note (DCP_ERROR, String::compose ("image sizes for frame %1 differ", frame));
return false;
}
int const pixels = image_A->size().width * image_A->size().height;
for (int j = 0; j < pixels; ++j) {
int const t = abs (image_A->data(c)[j] - image_B->data(c)[j]);
abs_diffs[d++] = t;
max_diff = max (max_diff, t);
}
}
uint64_t total = 0;
for (vector<int>::iterator j = abs_diffs.begin(); j != abs_diffs.end(); ++j) {
total += *j;
}
double const mean = double (total) / abs_diffs.size ();
uint64_t total_squared_deviation = 0;
for (vector<int>::iterator j = abs_diffs.begin(); j != abs_diffs.end(); ++j) {
total_squared_deviation += pow (*j - mean, 2);
}
double const std_dev = sqrt (double (total_squared_deviation) / abs_diffs.size());
note (DCP_NOTE, String::compose ("mean difference %1 deviation %2", mean, std_dev));
if (mean > opt.max_mean_pixel_error) {
note (
DCP_ERROR,
String::compose ("mean %1 out of range %2 in frame %3", mean, opt.max_mean_pixel_error, frame)
);
return false;
}
if (std_dev > opt.max_std_dev_pixel_error) {
note (
DCP_ERROR,
String::compose ("standard deviation %1 out of range %2 in frame %3", std_dev, opt.max_std_dev_pixel_error, frame)
);
return false;
}
return true;
}
string
PictureAsset::static_pkl_type (Standard standard)
{
switch (standard) {
case INTEROP:
return "application/x-smpte-mxf;asdcpKind=Picture";
case SMPTE:
return "application/mxf";
default:
DCP_ASSERT (false);
}
}
string
PictureAsset::pkl_type (Standard standard) const
{
return static_pkl_type (standard);
}
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