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/*
Copyright (C) 2016 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/>.
*/
#include "mono_picture_asset.h"
#include "mono_picture_asset_writer.h"
#include "j2k.h"
#include "openjpeg_image.h"
#include <boost/test/unit_test.hpp>
using std::string;
using boost::shared_ptr;
static void
check (unsigned int* seed, shared_ptr<dcp::PictureAssetWriter> writer, string hash)
{
shared_ptr<dcp::OpenJPEGImage> xyz (new dcp::OpenJPEGImage (dcp::Size (1998, 1080)));
for (int c = 0; c < 3; ++c) {
for (int p = 0; p < (1998 * 1080); ++p) {
xyz->data(c)[p] = rand_r (seed) & 0xfff;
}
}
dcp::Data data = dcp::compress_j2k (xyz, 100000000, 24, false, false);
dcp::FrameInfo info = writer->write (data.data().get(), data.size());
BOOST_CHECK_EQUAL (info.hash, hash);
}
/** Test the hashing of data written to JPEG2000 MXFs with some random inputs */
BOOST_AUTO_TEST_CASE (frame_info_hash_test)
{
shared_ptr<dcp::MonoPictureAsset> mp (new dcp::MonoPictureAsset (dcp::Fraction (24, 1), dcp::SMPTE));
shared_ptr<dcp::PictureAssetWriter> writer = mp->start_write ("build/test/frame_info_hash_test.mxf", false);
unsigned int seed = 42;
/* Check a few random frames */
check (&seed, writer, "c039c5a0e5d20bc646f7e9c10e2d5874");
check (&seed, writer, "d9e694cfe84544c54a869c128ba39343");
check (&seed, writer, "fafb05a0039cb9fc604279c90a13cb87");
}
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