/*
- Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ 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.
- This program is distributed in the hope that it will be useful,
+ 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 this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
+ 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 "data.h"
#include "dcp_assert.h"
#include "compose.hpp"
#include <openjpeg.h>
#include <cmath>
#include <iostream>
+
using std::min;
using std::pow;
-using boost::shared_ptr;
+using std::string;
+using std::shared_ptr;
using boost::shared_array;
using namespace dcp;
+
shared_ptr<dcp::OpenJPEGImage>
-dcp::decompress_j2k (Data data, int reduce)
+dcp::decompress_j2k (ArrayData data, int reduce)
{
- return dcp::decompress_j2k (data.data().get(), data.size(), reduce);
+ return dcp::decompress_j2k (data.data(), data.size(), reduce);
}
+
+#ifdef LIBDCP_OPENJPEG2
+
class ReadBuffer
{
public:
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);
}
-/** 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.
- */
+
+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,
0x20
};
- OPJ_CODEC_FORMAT format = OPJ_CODEC_J2K;
+ auto format = OPJ_CODEC_J2K;
if (size >= int (sizeof (jp2_magic)) && memcmp (data, jp2_magic, sizeof (jp2_magic)) == 0) {
format = OPJ_CODEC_JP2;
}
- opj_codec_t* decoder = opj_create_decompress (format);
+ auto decoder = opj_create_decompress (format);
if (!decoder) {
- boost::throw_exception (DCPReadError ("could not create JPEG2000 decompresser"));
+ 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);
- opj_stream_t* stream = opj_stream_default_create (OPJ_TRUE);
+ 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);
- ReadBuffer* buffer = new ReadBuffer (data, size);
+ 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_destroy_codec (decoder);
opj_stream_destroy (stream);
if (format == OPJ_CODEC_J2K) {
- boost::throw_exception (DCPReadError (String::compose ("could not decode JPEG2000 codestream of %1 bytes.", size)));
+ boost::throw_exception (ReadError (String::compose ("could not decode JPEG2000 codestream of %1 bytes.", size)));
} else {
- boost::throw_exception (DCPReadError (String::compose ("could not decode JP2 file of %1 bytes.", size)));
+ boost::throw_exception (ReadError (String::compose ("could not decode JP2 file of %1 bytes.", size)));
}
}
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)
+ : _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().get() + _offset, buffer, nb_bytes);
+ memcpy (_data.data() + _offset, buffer, nb_bytes);
_offset += nb_bytes;
- if (_offset > OPJ_SIZE_T (_data.size())) {
+ if (_offset > OPJ_SIZE_T(_data.size())) {
_data.set_size (_offset);
}
return nb_bytes;
return OPJ_TRUE;
}
- Data data () const
+ ArrayData data () const
{
return _data;
}
private:
- Data _data;
+ 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);
+ 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);
-}
+ return reinterpret_cast<WriteBuffer*>(data)->seek(nb_bytes);
-static void
-error_callback (char const * msg, void *)
-{
- throw MiscError (msg);
}
-Data
-dcp::compress_j2k (shared_ptr<const OpenJPEGImage> xyz, int bandwidth, int frames_per_second, bool threed, bool fourk)
+
+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 */
- opj_codec_t* encoder = opj_create_compress (OPJ_CODEC_J2K);
- if (encoder == 0) {
+ auto encoder = opj_create_compress (OPJ_CODEC_J2K);
+ if (encoder == nullptr) {
throw MiscError ("could not create JPEG2000 encoder");
}
- opj_set_error_handler (encoder, error_callback, 0);
+ 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 ("libdcp");
+ parameters.cp_comment = strdup (comment.c_str());
/* set max image */
parameters.max_cs_size = (bandwidth / 8) / frames_per_second;
/* Setup the encoder parameters using the current image and user parameters */
opj_setup_encoder (encoder, ¶meters, xyz->opj_image());
- opj_stream_t* stream = opj_stream_default_create (OPJ_FALSE);
+ 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_user_data (stream, buffer, write_free_function);
if (!opj_start_compress (encoder, xyz->opj_image(), stream)) {
- throw MiscError ("could not start JPEG2000 encoding");
+ 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_destroy_codec (encoder);
opj_stream_destroy (stream);
+ opj_destroy_codec (encoder);
+ free (parameters.cp_comment);
throw MiscError ("JPEG2000 encoding failed");
}
if (!opj_end_compress (encoder, stream)) {
- opj_destroy_codec (encoder);
opj_stream_destroy (stream);
+ opj_destroy_codec (encoder);
+ free (parameters.cp_comment);
throw MiscError ("could not end JPEG2000 encoding");
}
- Data enc (buffer->data ());
+ ArrayData enc (buffer->data ());
- free (parameters.cp_comment);
- opj_destroy_codec (encoder);
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
projects / libdcp.git / blobdiff