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/*
Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#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 "AS_DCP.h"
#include "KM_fileio.h"
#include <libxml++/nodes/element.h>
#include <openjpeg.h>
#include <boost/filesystem.hpp>
#include <list>
#include <stdexcept>
#include <iostream>
#include <sstream>
using std::string;
using std::ostream;
using std::list;
using std::vector;
using std::max;
using std::stringstream;
using std::pair;
using std::make_pair;
using std::istream;
using std::cout;
using boost::shared_ptr;
using namespace dcp;
PictureAsset::PictureAsset (boost::filesystem::path file)
: Asset (file)
, _intrinsic_duration (0)
{
}
PictureAsset::PictureAsset (Fraction edit_rate)
: _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 standard 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::pkl_type (Standard standard) const
{
switch (standard) {
case INTEROP:
return "application/x-smpte-mxf;asdcpKind=Picture";
case SMPTE:
return "application/mxf";
default:
DCP_ASSERT (false);
}
}
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