Re-add option to build with openjpeg 1.5.x.

1 files changed, 222 insertions, 0 deletions

diff --git a/src/j2k_transcode_oj1.cc b/src/j2k_transcode_oj1.cc
new file mode 100644
index 00000000..6cd6e16d
--- /dev/null
+++ b/src/j2k_transcode_oj1.cc
@@ -0,0 +1,222 @@
+/*
+    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 "compose.hpp"
+#include "data.h"
+#include "dcp_assert.h"
+#include "exceptions.h"
+#include "j2k_transcode.h"
+#include "openjpeg_image.h"
+#include <openjpeg.h>
+#include <cmath>
+
+
+using std::min;
+using std::pow;
+using std::shared_ptr;
+using std::string;
+using namespace dcp;
+
+
+shared_ptr<dcp::OpenJPEGImage>
+dcp::decompress_j2k(Data const& data, int reduce)
+{
+	return dcp::decompress_j2k (data.data(), data.size(), reduce);
+}
+
+
+shared_ptr<dcp::OpenJPEGImage>
+dcp::decompress_j2k(shared_ptr<const Data> data, int reduce)
+{
+	return dcp::decompress_j2k(data->data(), data->size(), reduce);
+}
+
+
+
+/** Decompress a JPEG2000 image to a bitmap.
+ *  @param data JPEG2000 data.
+ *  @param size Size of data in bytes.
+ *  @param reduce A power of 2 by which to reduce the size of the decoded image;
+ *  e.g. 0 reduces by (2^0 == 1), ie keeping the same size.
+ *       1 reduces by (2^1 == 2), ie halving the size of the image.
+ *  This is useful for scaling 4K DCP images down to 2K.
+ *  @return XYZ image.
+ */
+shared_ptr<dcp::OpenJPEGImage>
+dcp::decompress_j2k(uint8_t const* data, int64_t size, int reduce)
+{
+	auto decoder = opj_create_decompress(CODEC_J2K);
+	opj_dparameters_t parameters;
+	opj_set_default_decoder_parameters(&parameters);
+	parameters.cp_reduce = reduce;
+	opj_setup_decoder(decoder, &parameters);
+	auto cio = opj_cio_open((opj_common_ptr) decoder, const_cast<uint8_t*>(data), size);
+	auto image = opj_decode(decoder, cio);
+	if (!image) {
+		opj_destroy_decompress(decoder);
+		opj_cio_close (cio);
+		boost::throw_exception(ReadError(String::compose ("could not decode JPEG2000 codestream of %1 bytes.", size)));
+	}
+
+	opj_destroy_decompress(decoder);
+	opj_cio_close(cio);
+
+	image->x1 = rint(float(image->x1) / pow (2, reduce));
+	image->y1 = rint(float(image->y1) / pow (2, reduce));
+	return std::make_shared<OpenJPEGImage>(image);
+}
+
+
+ArrayData
+dcp::compress_j2k(shared_ptr<const OpenJPEGImage> xyz, int bandwidth, int frames_per_second, bool threed, bool fourk, string comment)
+{
+	/* Set the max image and component sizes based on frame_rate */
+	int max_cs_len = ((float) bandwidth) / 8 / frames_per_second;
+	if (threed) {
+		/* In 3D we have only half the normal bandwidth per eye */
+		max_cs_len /= 2;
+	}
+	int const max_comp_size = max_cs_len / 1.25;
+
+	/* get a J2K compressor handle */
+	auto cinfo = opj_create_compress(CODEC_J2K);
+	if (cinfo == 0) {
+		throw MiscError ("could not create JPEG2000 encoder");
+	}
+
+	if (comment.empty()) {
+		/* asdcplib complains with "Illegal data size" when reading frames encoded with an empty comment */
+		throw MiscError("compress_j2k comment can not be an empty string");
+	}
+
+	/* Set encoding parameters to default values */
+	opj_cparameters_t parameters;
+	opj_set_default_encoder_parameters(&parameters);
+	if (fourk) {
+		parameters.numresolution = 7;
+	}
+
+	/* Set default cinema parameters */
+	parameters.tile_size_on = false;
+	parameters.cp_tdx = 1;
+	parameters.cp_tdy = 1;
+
+	/* Tile part */
+	parameters.tp_flag = 'C';
+	parameters.tp_on = 1;
+
+	/* Tile and Image shall be at (0,0) */
+	parameters.cp_tx0 = 0;
+	parameters.cp_ty0 = 0;
+	parameters.image_offset_x0 = 0;
+	parameters.image_offset_y0 = 0;
+
+	/* Codeblock size = 32x32 */
+	parameters.cblockw_init = 32;
+	parameters.cblockh_init = 32;
+	parameters.csty |= 0x01;
+
+	/* The progression order shall be CPRL */
+	parameters.prog_order = CPRL;
+
+	/* No ROI */
+	parameters.roi_compno = -1;
+
+	parameters.subsampling_dx = 1;
+	parameters.subsampling_dy = 1;
+
+	/* 9-7 transform */
+	parameters.irreversible = 1;
+
+	parameters.tcp_rates[0] = 0;
+	parameters.tcp_numlayers++;
+	parameters.cp_disto_alloc = 1;
+	parameters.cp_rsiz = fourk ? CINEMA4K : CINEMA2K;
+	parameters.cp_comment = strdup(comment.c_str());
+	if (fourk) {
+		parameters.numpocs = 2;
+		parameters.POC[0].tile = 1;
+		parameters.POC[0].resno0 = 0;
+		parameters.POC[0].compno0 = 0;
+		parameters.POC[0].layno1 = 1;
+		parameters.POC[0].resno1 = parameters.numresolution - 1;
+		parameters.POC[0].compno1 = 3;
+		parameters.POC[0].prg1 = CPRL;
+		parameters.POC[1].tile = 1;
+		parameters.POC[1].resno0 = parameters.numresolution - 1;
+		parameters.POC[1].compno0 = 0;
+		parameters.POC[1].layno1 = 1;
+		parameters.POC[1].resno1 = parameters.numresolution;
+		parameters.POC[1].compno1 = 3;
+		parameters.POC[1].prg1 = CPRL;
+	}
+
+	parameters.cp_comment = strdup ("libdcp");
+	parameters.cp_cinema = fourk ? CINEMA4K_24 : CINEMA2K_24;
+
+	/* 3 components, so use MCT */
+	parameters.tcp_mct = 1;
+
+	/* set max image */
+	parameters.max_comp_size = max_comp_size;
+	parameters.tcp_rates[0] = ((float) (3 * xyz->size().width * xyz->size().height * 12)) / (max_cs_len * 8);
+
+	/* Set event manager to null (openjpeg 1.3 bug) */
+	cinfo->event_mgr = 0;
+
+	/* Setup the encoder parameters using the current image and user parameters */
+	opj_setup_encoder(cinfo, &parameters, xyz->opj_image ());
+
+	opj_cio_t* cio = opj_cio_open((opj_common_ptr) cinfo, 0, 0);
+	if (cio == 0) {
+		opj_destroy_compress (cinfo);
+		throw MiscError("could not open JPEG2000 stream");
+	}
+
+	int const r = opj_encode(cinfo, cio, xyz->opj_image(), 0);
+	if (r == 0) {
+		opj_cio_close (cio);
+		opj_destroy_compress (cinfo);
+		throw MiscError("JPEG2000 encoding failed");
+	}
+
+	ArrayData enc(cio->buffer, cio_tell(cio));
+
+	opj_cio_close (cio);
+	free (parameters.cp_comment);
+	opj_destroy_compress (cinfo);
+
+	return enc;
+}
+