#include "array_data.h"
#include "util.h"
#include "version.h"
-#include "j2k.h"
+#include "j2k_transcode.h"
#include "openjpeg_image.h"
#include <sys/time.h>
#include <iostream>
+++ /dev/null
-/*
- 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/j2k.cc
- * @brief Methods to encode and decode JPEG2000
- */
-
-
-#include "array_data.h"
-#include "j2k.h"
-#include "exceptions.h"
-#include "openjpeg_image.h"
-#include "dcp_assert.h"
-#include "compose.hpp"
-#include <openjpeg.h>
-#include <cmath>
-#include <iostream>
-
-
-using std::min;
-using std::pow;
-using std::string;
-using std::shared_ptr;
-using boost::shared_array;
-using namespace dcp;
-
-
-shared_ptr<dcp::OpenJPEGImage>
-dcp::decompress_j2k (ArrayData data, int reduce)
-{
- return dcp::decompress_j2k (data.data(), data.size(), reduce);
-}
-
-
-#ifdef LIBDCP_OPENJPEG2
-
-class ReadBuffer
-{
-public:
- ReadBuffer (uint8_t* data, int64_t size)
- : _data (data)
- , _size (size)
- , _offset (0)
- {}
-
- OPJ_SIZE_T read (void* buffer, OPJ_SIZE_T nb_bytes)
- {
- int64_t N = min (nb_bytes, _size - _offset);
- memcpy (buffer, _data + _offset, N);
- _offset += N;
- return N;
- }
-
-private:
- uint8_t* _data;
- OPJ_SIZE_T _size;
- OPJ_SIZE_T _offset;
-};
-
-
-static OPJ_SIZE_T
-read_function (void* buffer, OPJ_SIZE_T nb_bytes, void* data)
-{
- return reinterpret_cast<ReadBuffer*>(data)->read (buffer, nb_bytes);
-}
-
-
-static void
-read_free_function (void* data)
-{
- delete reinterpret_cast<ReadBuffer*>(data);
-}
-
-
-static void
-decompress_error_callback (char const * msg, void *)
-{
- throw J2KDecompressionError (msg);
-}
-
-
-static void
-compress_error_callback (char const * msg, void *)
-{
- throw MiscError (msg);
-}
-
-
-shared_ptr<dcp::OpenJPEGImage>
-dcp::decompress_j2k (uint8_t* data, int64_t size, int reduce)
-{
- DCP_ASSERT (reduce >= 0);
-
- uint8_t const jp2_magic[] = {
- 0x00,
- 0x00,
- 0x00,
- 0x0c,
- 'j',
- 'P',
- 0x20,
- 0x20
- };
-
- auto format = OPJ_CODEC_J2K;
- if (size >= int (sizeof (jp2_magic)) && memcmp (data, jp2_magic, sizeof (jp2_magic)) == 0) {
- format = OPJ_CODEC_JP2;
- }
-
- auto decoder = opj_create_decompress (format);
- if (!decoder) {
- boost::throw_exception (ReadError ("could not create JPEG2000 decompresser"));
- }
- opj_dparameters_t parameters;
- opj_set_default_decoder_parameters (¶meters);
- parameters.cp_reduce = reduce;
- opj_setup_decoder (decoder, ¶meters);
-
- auto stream = opj_stream_default_create (OPJ_TRUE);
- if (!stream) {
- throw MiscError ("could not create JPEG2000 stream");
- }
-
- opj_set_error_handler(decoder, decompress_error_callback, 00);
-
- opj_stream_set_read_function (stream, read_function);
- auto buffer = new ReadBuffer (data, size);
- opj_stream_set_user_data (stream, buffer, read_free_function);
- opj_stream_set_user_data_length (stream, size);
-
- opj_image_t* image = 0;
- opj_read_header (stream, decoder, &image);
- if (opj_decode (decoder, stream, image) == OPJ_FALSE) {
- opj_destroy_codec (decoder);
- opj_stream_destroy (stream);
- if (format == OPJ_CODEC_J2K) {
- boost::throw_exception (ReadError (String::compose ("could not decode JPEG2000 codestream of %1 bytes.", size)));
- } else {
- boost::throw_exception (ReadError (String::compose ("could not decode JP2 file of %1 bytes.", size)));
- }
- }
-
- opj_destroy_codec (decoder);
- opj_stream_destroy (stream);
-
- image->x1 = rint (float(image->x1) / pow (2.0f, reduce));
- image->y1 = rint (float(image->y1) / pow (2.0f, reduce));
- return shared_ptr<OpenJPEGImage> (new OpenJPEGImage (image));
-}
-
-#endif
-
-
-#ifdef LIBDCP_OPENJPEG1
-
-shared_ptr<dcp::OpenJPEGImage>
-dcp::decompress_j2k (uint8_t* data, int64_t size, int reduce)
-{
- auto decoder = opj_create_decompress (CODEC_J2K);
- opj_dparameters_t parameters;
- opj_set_default_decoder_parameters (¶meters);
- parameters.cp_reduce = reduce;
- opj_setup_decoder (decoder, ¶meters);
- auto cio = opj_cio_open ((opj_common_ptr) decoder, 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 shared_ptr<OpenJPEGImage> (new OpenJPEGImage (image));
-}
-#endif
-
-
-#ifdef LIBDCP_OPENJPEG2
-
-class WriteBuffer
-{
-public:
-/* XXX: is there a better strategy for this? */
-#define MAX_J2K_SIZE (1024 * 1024 * 2)
- WriteBuffer ()
- : _data (shared_array<uint8_t>(new uint8_t[MAX_J2K_SIZE]), MAX_J2K_SIZE)
- , _offset (0)
- {
- _data.set_size (0);
- }
-
- OPJ_SIZE_T write (void* buffer, OPJ_SIZE_T nb_bytes)
- {
- DCP_ASSERT ((_offset + nb_bytes) < MAX_J2K_SIZE);
- memcpy (_data.data() + _offset, buffer, nb_bytes);
- _offset += nb_bytes;
- if (_offset > OPJ_SIZE_T(_data.size())) {
- _data.set_size (_offset);
- }
- return nb_bytes;
- }
-
- OPJ_BOOL seek (OPJ_SIZE_T nb_bytes)
- {
- _offset = nb_bytes;
- return OPJ_TRUE;
- }
-
- ArrayData data () const
- {
- return _data;
- }
-
-private:
- ArrayData _data;
- OPJ_SIZE_T _offset;
-};
-
-
-static OPJ_SIZE_T
-write_function (void* buffer, OPJ_SIZE_T nb_bytes, void* data)
-{
- return reinterpret_cast<WriteBuffer*>(data)->write(buffer, nb_bytes);
-}
-
-
-static void
-write_free_function (void* data)
-{
- delete reinterpret_cast<WriteBuffer*>(data);
-}
-
-
-static OPJ_BOOL
-seek_function (OPJ_OFF_T nb_bytes, void* data)
-{
- return reinterpret_cast<WriteBuffer*>(data)->seek(nb_bytes);
-
-}
-
-
-ArrayData
-dcp::compress_j2k (shared_ptr<const OpenJPEGImage> xyz, int bandwidth, int frames_per_second, bool threed, bool fourk, string comment)
-{
- /* get a J2K compressor handle */
- auto encoder = opj_create_compress (OPJ_CODEC_J2K);
- if (encoder == nullptr) {
- 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");
- }
-
- opj_set_error_handler (encoder, compress_error_callback, 0);
-
- /* Set encoding parameters to default values */
- opj_cparameters_t parameters;
- opj_set_default_encoder_parameters (¶meters);
- if (fourk) {
- parameters.numresolution = 7;
- }
- parameters.rsiz = fourk ? OPJ_PROFILE_CINEMA_4K : OPJ_PROFILE_CINEMA_2K;
- parameters.cp_comment = strdup (comment.c_str());
-
- /* set max image */
- parameters.max_cs_size = (bandwidth / 8) / frames_per_second;
- if (threed) {
- /* In 3D we have only half the normal bandwidth per eye */
- parameters.max_cs_size /= 2;
- }
- parameters.max_comp_size = parameters.max_cs_size / 1.25;
- parameters.tcp_numlayers = 1;
- parameters.tcp_mct = 1;
-
- /* Setup the encoder parameters using the current image and user parameters */
- opj_setup_encoder (encoder, ¶meters, xyz->opj_image());
-
- auto stream = opj_stream_default_create (OPJ_FALSE);
- if (!stream) {
- opj_destroy_codec (encoder);
- free (parameters.cp_comment);
- throw MiscError ("could not create JPEG2000 stream");
- }
-
- opj_stream_set_write_function (stream, write_function);
- opj_stream_set_seek_function (stream, seek_function);
- WriteBuffer* buffer = new WriteBuffer ();
- opj_stream_set_user_data (stream, buffer, write_free_function);
-
- if (!opj_start_compress (encoder, xyz->opj_image(), stream)) {
- opj_stream_destroy (stream);
- opj_destroy_codec (encoder);
- free (parameters.cp_comment);
- if ((errno & 0x61500) == 0x61500) {
- /* We've had one of the magic error codes from our patched openjpeg */
- boost::throw_exception (StartCompressionError (errno & 0xff));
- } else {
- boost::throw_exception (StartCompressionError ());
- }
- }
-
- if (!opj_encode (encoder, stream)) {
- opj_stream_destroy (stream);
- opj_destroy_codec (encoder);
- free (parameters.cp_comment);
- throw MiscError ("JPEG2000 encoding failed");
- }
-
- if (!opj_end_compress (encoder, stream)) {
- opj_stream_destroy (stream);
- opj_destroy_codec (encoder);
- free (parameters.cp_comment);
- throw MiscError ("could not end JPEG2000 encoding");
- }
-
- ArrayData enc (buffer->data ());
-
- opj_stream_destroy (stream);
- opj_destroy_codec (encoder);
- free (parameters.cp_comment);
-
- return enc;
-}
-
-#endif
-
-
-#ifdef LIBDCP_OPENJPEG1
-
-ArrayData
-dcp::compress_j2k (shared_ptr<const OpenJPEGImage> xyz, int bandwidth, int frames_per_second, bool threed, bool fourk)
-{
- /* 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 == nullptr) {
- throw MiscError ("could not create JPEG2000 encoder");
- }
-
- /* Set encoding parameters to default values */
- opj_cparameters_t parameters;
- opj_set_default_encoder_parameters (¶meters);
- 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;
- 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, ¶meters, xyz->opj_image());
-
- auto cio = opj_cio_open ((opj_common_ptr) cinfo, 0, 0);
- if (cio == nullptr) {
- 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;
-}
-
-#endif
+++ /dev/null
-/*
- 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/j2k.h
- * @brief Methods to encode and decode JPEG2000
- */
-
-
-#include "array_data.h"
-#include <memory>
-#include <stdint.h>
-
-
-namespace dcp {
-
-
-class OpenJPEGImage;
-
-
-extern std::shared_ptr<OpenJPEGImage> decompress_j2k (uint8_t* data, int64_t size, int 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 OpenJPEGImage
- */
-extern std::shared_ptr<OpenJPEGImage> decompress_j2k (ArrayData data, int reduce);
-
-/** @xyz Picture to compress. Parts of xyz's data WILL BE OVERWRITTEN by libopenjpeg so xyz cannot be re-used
- * after this call; see opj_j2k_encode where if l_reuse_data is false it will set l_tilec->data = l_img_comp->data.
- */
-extern ArrayData compress_j2k (std::shared_ptr<const OpenJPEGImage>, int bandwith, int frames_per_second, bool threed, bool fourk, std::string comment = "libdcp");
-
-
-}
--- /dev/null
+/*
+ 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/j2k_transcode.cc
+ * @brief Methods to encode and decode JPEG2000
+ */
+
+
+#include "array_data.h"
+#include "j2k_transcode.h"
+#include "exceptions.h"
+#include "openjpeg_image.h"
+#include "dcp_assert.h"
+#include "compose.hpp"
+#include <openjpeg.h>
+#include <cmath>
+#include <iostream>
+
+
+using std::min;
+using std::pow;
+using std::string;
+using std::shared_ptr;
+using boost::shared_array;
+using namespace dcp;
+
+
+shared_ptr<dcp::OpenJPEGImage>
+dcp::decompress_j2k (ArrayData data, int reduce)
+{
+ return dcp::decompress_j2k (data.data(), data.size(), reduce);
+}
+
+
+#ifdef LIBDCP_OPENJPEG2
+
+class ReadBuffer
+{
+public:
+ ReadBuffer (uint8_t* data, int64_t size)
+ : _data (data)
+ , _size (size)
+ , _offset (0)
+ {}
+
+ OPJ_SIZE_T read (void* buffer, OPJ_SIZE_T nb_bytes)
+ {
+ int64_t N = min (nb_bytes, _size - _offset);
+ memcpy (buffer, _data + _offset, N);
+ _offset += N;
+ return N;
+ }
+
+private:
+ uint8_t* _data;
+ OPJ_SIZE_T _size;
+ OPJ_SIZE_T _offset;
+};
+
+
+static OPJ_SIZE_T
+read_function (void* buffer, OPJ_SIZE_T nb_bytes, void* data)
+{
+ return reinterpret_cast<ReadBuffer*>(data)->read (buffer, nb_bytes);
+}
+
+
+static void
+read_free_function (void* data)
+{
+ delete reinterpret_cast<ReadBuffer*>(data);
+}
+
+
+static void
+decompress_error_callback (char const * msg, void *)
+{
+ throw J2KDecompressionError (msg);
+}
+
+
+static void
+compress_error_callback (char const * msg, void *)
+{
+ throw MiscError (msg);
+}
+
+
+shared_ptr<dcp::OpenJPEGImage>
+dcp::decompress_j2k (uint8_t* data, int64_t size, int reduce)
+{
+ DCP_ASSERT (reduce >= 0);
+
+ uint8_t const jp2_magic[] = {
+ 0x00,
+ 0x00,
+ 0x00,
+ 0x0c,
+ 'j',
+ 'P',
+ 0x20,
+ 0x20
+ };
+
+ auto format = OPJ_CODEC_J2K;
+ if (size >= int (sizeof (jp2_magic)) && memcmp (data, jp2_magic, sizeof (jp2_magic)) == 0) {
+ format = OPJ_CODEC_JP2;
+ }
+
+ auto decoder = opj_create_decompress (format);
+ if (!decoder) {
+ boost::throw_exception (ReadError ("could not create JPEG2000 decompresser"));
+ }
+ opj_dparameters_t parameters;
+ opj_set_default_decoder_parameters (¶meters);
+ parameters.cp_reduce = reduce;
+ opj_setup_decoder (decoder, ¶meters);
+
+ auto stream = opj_stream_default_create (OPJ_TRUE);
+ if (!stream) {
+ throw MiscError ("could not create JPEG2000 stream");
+ }
+
+ opj_set_error_handler(decoder, decompress_error_callback, 00);
+
+ opj_stream_set_read_function (stream, read_function);
+ auto buffer = new ReadBuffer (data, size);
+ opj_stream_set_user_data (stream, buffer, read_free_function);
+ opj_stream_set_user_data_length (stream, size);
+
+ opj_image_t* image = 0;
+ opj_read_header (stream, decoder, &image);
+ if (opj_decode (decoder, stream, image) == OPJ_FALSE) {
+ opj_destroy_codec (decoder);
+ opj_stream_destroy (stream);
+ if (format == OPJ_CODEC_J2K) {
+ boost::throw_exception (ReadError (String::compose ("could not decode JPEG2000 codestream of %1 bytes.", size)));
+ } else {
+ boost::throw_exception (ReadError (String::compose ("could not decode JP2 file of %1 bytes.", size)));
+ }
+ }
+
+ opj_destroy_codec (decoder);
+ opj_stream_destroy (stream);
+
+ image->x1 = rint (float(image->x1) / pow (2.0f, reduce));
+ image->y1 = rint (float(image->y1) / pow (2.0f, reduce));
+ return shared_ptr<OpenJPEGImage> (new OpenJPEGImage (image));
+}
+
+#endif
+
+
+#ifdef LIBDCP_OPENJPEG1
+
+shared_ptr<dcp::OpenJPEGImage>
+dcp::decompress_j2k (uint8_t* data, int64_t size, int reduce)
+{
+ auto decoder = opj_create_decompress (CODEC_J2K);
+ opj_dparameters_t parameters;
+ opj_set_default_decoder_parameters (¶meters);
+ parameters.cp_reduce = reduce;
+ opj_setup_decoder (decoder, ¶meters);
+ auto cio = opj_cio_open ((opj_common_ptr) decoder, 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 shared_ptr<OpenJPEGImage> (new OpenJPEGImage (image));
+}
+#endif
+
+
+#ifdef LIBDCP_OPENJPEG2
+
+class WriteBuffer
+{
+public:
+/* XXX: is there a better strategy for this? */
+#define MAX_J2K_SIZE (1024 * 1024 * 2)
+ WriteBuffer ()
+ : _data (shared_array<uint8_t>(new uint8_t[MAX_J2K_SIZE]), MAX_J2K_SIZE)
+ , _offset (0)
+ {
+ _data.set_size (0);
+ }
+
+ OPJ_SIZE_T write (void* buffer, OPJ_SIZE_T nb_bytes)
+ {
+ DCP_ASSERT ((_offset + nb_bytes) < MAX_J2K_SIZE);
+ memcpy (_data.data() + _offset, buffer, nb_bytes);
+ _offset += nb_bytes;
+ if (_offset > OPJ_SIZE_T(_data.size())) {
+ _data.set_size (_offset);
+ }
+ return nb_bytes;
+ }
+
+ OPJ_BOOL seek (OPJ_SIZE_T nb_bytes)
+ {
+ _offset = nb_bytes;
+ return OPJ_TRUE;
+ }
+
+ ArrayData data () const
+ {
+ return _data;
+ }
+
+private:
+ ArrayData _data;
+ OPJ_SIZE_T _offset;
+};
+
+
+static OPJ_SIZE_T
+write_function (void* buffer, OPJ_SIZE_T nb_bytes, void* data)
+{
+ return reinterpret_cast<WriteBuffer*>(data)->write(buffer, nb_bytes);
+}
+
+
+static void
+write_free_function (void* data)
+{
+ delete reinterpret_cast<WriteBuffer*>(data);
+}
+
+
+static OPJ_BOOL
+seek_function (OPJ_OFF_T nb_bytes, void* data)
+{
+ return reinterpret_cast<WriteBuffer*>(data)->seek(nb_bytes);
+
+}
+
+
+ArrayData
+dcp::compress_j2k (shared_ptr<const OpenJPEGImage> xyz, int bandwidth, int frames_per_second, bool threed, bool fourk, string comment)
+{
+ /* get a J2K compressor handle */
+ auto encoder = opj_create_compress (OPJ_CODEC_J2K);
+ if (encoder == nullptr) {
+ 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");
+ }
+
+ opj_set_error_handler (encoder, compress_error_callback, 0);
+
+ /* Set encoding parameters to default values */
+ opj_cparameters_t parameters;
+ opj_set_default_encoder_parameters (¶meters);
+ if (fourk) {
+ parameters.numresolution = 7;
+ }
+ parameters.rsiz = fourk ? OPJ_PROFILE_CINEMA_4K : OPJ_PROFILE_CINEMA_2K;
+ parameters.cp_comment = strdup (comment.c_str());
+
+ /* set max image */
+ parameters.max_cs_size = (bandwidth / 8) / frames_per_second;
+ if (threed) {
+ /* In 3D we have only half the normal bandwidth per eye */
+ parameters.max_cs_size /= 2;
+ }
+ parameters.max_comp_size = parameters.max_cs_size / 1.25;
+ parameters.tcp_numlayers = 1;
+ parameters.tcp_mct = 1;
+
+ /* Setup the encoder parameters using the current image and user parameters */
+ opj_setup_encoder (encoder, ¶meters, xyz->opj_image());
+
+ auto stream = opj_stream_default_create (OPJ_FALSE);
+ if (!stream) {
+ opj_destroy_codec (encoder);
+ free (parameters.cp_comment);
+ throw MiscError ("could not create JPEG2000 stream");
+ }
+
+ opj_stream_set_write_function (stream, write_function);
+ opj_stream_set_seek_function (stream, seek_function);
+ WriteBuffer* buffer = new WriteBuffer ();
+ opj_stream_set_user_data (stream, buffer, write_free_function);
+
+ if (!opj_start_compress (encoder, xyz->opj_image(), stream)) {
+ opj_stream_destroy (stream);
+ opj_destroy_codec (encoder);
+ free (parameters.cp_comment);
+ if ((errno & 0x61500) == 0x61500) {
+ /* We've had one of the magic error codes from our patched openjpeg */
+ boost::throw_exception (StartCompressionError (errno & 0xff));
+ } else {
+ boost::throw_exception (StartCompressionError ());
+ }
+ }
+
+ if (!opj_encode (encoder, stream)) {
+ opj_stream_destroy (stream);
+ opj_destroy_codec (encoder);
+ free (parameters.cp_comment);
+ throw MiscError ("JPEG2000 encoding failed");
+ }
+
+ if (!opj_end_compress (encoder, stream)) {
+ opj_stream_destroy (stream);
+ opj_destroy_codec (encoder);
+ free (parameters.cp_comment);
+ throw MiscError ("could not end JPEG2000 encoding");
+ }
+
+ ArrayData enc (buffer->data ());
+
+ opj_stream_destroy (stream);
+ opj_destroy_codec (encoder);
+ free (parameters.cp_comment);
+
+ return enc;
+}
+
+#endif
+
+
+#ifdef LIBDCP_OPENJPEG1
+
+ArrayData
+dcp::compress_j2k (shared_ptr<const OpenJPEGImage> xyz, int bandwidth, int frames_per_second, bool threed, bool fourk)
+{
+ /* 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 == nullptr) {
+ throw MiscError ("could not create JPEG2000 encoder");
+ }
+
+ /* Set encoding parameters to default values */
+ opj_cparameters_t parameters;
+ opj_set_default_encoder_parameters (¶meters);
+ 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;
+ 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, ¶meters, xyz->opj_image());
+
+ auto cio = opj_cio_open ((opj_common_ptr) cinfo, 0, 0);
+ if (cio == nullptr) {
+ 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;
+}
+
+#endif
--- /dev/null
+/*
+ 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/j2k_transcode.h
+ * @brief Methods to encode and decode JPEG2000
+ */
+
+
+#include "array_data.h"
+#include <memory>
+#include <stdint.h>
+
+
+namespace dcp {
+
+
+class OpenJPEGImage;
+
+
+extern std::shared_ptr<OpenJPEGImage> decompress_j2k (uint8_t* data, int64_t size, int 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 OpenJPEGImage
+ */
+extern std::shared_ptr<OpenJPEGImage> decompress_j2k (ArrayData data, int reduce);
+
+/** @xyz Picture to compress. Parts of xyz's data WILL BE OVERWRITTEN by libopenjpeg so xyz cannot be re-used
+ * after this call; see opj_j2k_encode where if l_reuse_data is false it will set l_tilec->data = l_img_comp->data.
+ */
+extern ArrayData compress_j2k (std::shared_ptr<const OpenJPEGImage>, int bandwith, int frames_per_second, bool threed, bool fourk, std::string comment = "libdcp");
+
+
+}
*/
-#include "mono_picture_frame.h"
-#include "exceptions.h"
-#include "util.h"
-#include "rgb_xyz.h"
#include "colour_conversion.h"
#include "compose.hpp"
-#include "j2k.h"
#include "crypto_context.h"
+#include "exceptions.h"
+#include "j2k_transcode.h"
+#include "mono_picture_frame.h"
+#include "rgb_xyz.h"
+#include "util.h"
#include <asdcp/KM_fileio.h>
#include <asdcp/AS_DCP.h>
#include "picture_asset_writer.h"
#include "dcp_assert.h"
#include "compose.hpp"
-#include "j2k.h"
+#include "j2k_transcode.h"
#include <asdcp/AS_DCP.h>
#include <asdcp/KM_fileio.h>
#include <libxml++/nodes/element.h>
*/
-#include "stereo_picture_frame.h"
-#include "exceptions.h"
-#include "util.h"
-#include "rgb_xyz.h"
#include "colour_conversion.h"
#include "compose.hpp"
-#include "j2k.h"
#include "crypto_context.h"
+#include "exceptions.h"
+#include "j2k_transcode.h"
+#include "rgb_xyz.h"
+#include "stereo_picture_frame.h"
+#include "util.h"
#include <asdcp/AS_DCP.h>
#include <asdcp/KM_fileio.h>
identity_transfer_function.cc
interop_load_font_node.cc
interop_subtitle_asset.cc
- j2k.cc
+ j2k_transcode.cc
key.cc
language_tag.cc
local_time.cc
identity_transfer_function.h
interop_load_font_node.h
interop_subtitle_asset.h
- j2k.h
+ j2k_transcode.h
key.h
language_tag.h
load_font_node.h
#include "mono_picture_asset.h"
#include "mono_picture_asset_writer.h"
-#include "j2k.h"
+#include "j2k_transcode.h"
#include "openjpeg_image.h"
#include <boost/test/unit_test.hpp>
#include "smpte_subtitle_asset.h"
#include "mono_picture_asset.h"
#include "openjpeg_image.h"
-#include "j2k.h"
+#include "j2k_transcode.h"
#include "picture_asset_writer.h"
#include "reel_mono_picture_asset.h"
#include "reel_asset.h"
files in the program, then also delete it here.
*/
-#include "verify.h"
-#include "util.h"
-#include "j2k.h"
-#include "reel.h"
-#include "reel_mono_picture_asset.h"
-#include "reel_sound_asset.h"
+#include "compose.hpp"
#include "cpl.h"
#include "dcp.h"
-#include "openjpeg_image.h"
+#include "interop_subtitle_asset.h"
+#include "j2k_transcode.h"
#include "mono_picture_asset.h"
-#include "stereo_picture_asset.h"
#include "mono_picture_asset_writer.h"
-#include "interop_subtitle_asset.h"
-#include "smpte_subtitle_asset.h"
+#include "openjpeg_image.h"
+#include "raw_convert.h"
+#include "reel.h"
#include "reel_closed_caption_asset.h"
+#include "reel_markers_asset.h"
+#include "reel_mono_picture_asset.h"
+#include "reel_sound_asset.h"
#include "reel_stereo_picture_asset.h"
#include "reel_subtitle_asset.h"
-#include "reel_markers_asset.h"
-#include "compose.hpp"
-#include "test.h"
-#include "raw_convert.h"
+#include "smpte_subtitle_asset.h"
+#include "stereo_picture_asset.h"
#include "stream_operators.h"
+#include "test.h"
+#include "util.h"
+#include "verify.h"
#include <boost/test/unit_test.hpp>
#include <boost/algorithm/string.hpp>
#include <cstdio>
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