Rename files to mention J2K.

1 files changed, 230 insertions, 0 deletions

diff --git a/src/j2k_picture_asset.cc b/src/j2k_picture_asset.cc
new file mode 100644
index 00000000..c9f669a6
--- /dev/null
+++ b/src/j2k_picture_asset.cc
@@ -0,0 +1,230 @@
+/*
+    Copyright (C) 2012-2021 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.
+*/
+
+
+/** @file  src/picture_asset.cc
+ *  @brief PictureAsset class
+ */
+
+
+#include "compose.hpp"
+#include "dcp_assert.h"
+#include "equality_options.h"
+#include "exceptions.h"
+#include "j2k_transcode.h"
+#include "openjpeg_image.h"
+#include "picture_asset.h"
+#include "picture_asset_writer.h"
+#include "util.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 std::shared_ptr;
+using namespace dcp;
+
+
+PictureAsset::PictureAsset (boost::filesystem::path file)
+	: Asset (file)
+{
+
+}
+
+
+PictureAsset::PictureAsset (Fraction edit_rate, Standard standard)
+	: MXF (standard)
+	, _edit_rate (edit_rate)
+{
+
+}
+
+
+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 (NoteType::ERROR, "video MXF picture descriptors differ");
+		return false;
+	}
+
+	if (a.ContainerDuration != b.ContainerDuration) {
+		note (NoteType::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 const& 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 (NoteType::NOTE, "J2K identical");
+		/* Easy result; the J2K data is identical */
+		return true;
+	}
+
+	/* Decompress the images to bitmaps */
+	auto image_A = decompress_j2k (const_cast<uint8_t*>(data_A), size_A, 0);
+	auto 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 (NoteType::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 (auto j: abs_diffs) {
+		total_squared_deviation += pow (j - mean, 2);
+	}
+
+	auto const std_dev = sqrt (double (total_squared_deviation) / abs_diffs.size());
+
+	note (NoteType::NOTE, String::compose("mean difference %1 deviation %2", mean, std_dev));
+
+	if (mean > opt.max_mean_pixel_error) {
+		note (
+			NoteType::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 (
+			NoteType::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 Standard::INTEROP:
+		return "application/x-smpte-mxf;asdcpKind=Picture";
+	case Standard::SMPTE:
+		return "application/mxf";
+	default:
+		DCP_ASSERT (false);
+	}
+}
+
+
+string
+PictureAsset::pkl_type (Standard standard) const
+{
+	return static_pkl_type (standard);
+}