2 Copyright (C) 2014-2015 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
21 #include "j2k_image_proxy.h"
22 #include "dcpomatic_socket.h"
24 #include "dcpomatic_assert.h"
25 #include <dcp/raw_convert.h>
26 #include <dcp/openjpeg_image.h>
27 #include <dcp/mono_picture_frame.h>
28 #include <dcp/stereo_picture_frame.h>
29 #include <dcp/colour_conversion.h>
30 #include <dcp/rgb_xyz.h>
32 #include <libcxml/cxml.h>
33 #include <libxml++/libxml++.h>
43 using boost::shared_ptr;
44 using boost::optional;
45 using boost::dynamic_pointer_cast;
47 using dcp::raw_convert;
49 /** Construct a J2KImageProxy from a JPEG2000 file */
50 J2KImageProxy::J2KImageProxy (boost::filesystem::path path, dcp::Size size, AVPixelFormat pixel_format)
53 , _pixel_format (pixel_format)
55 /* ::image assumes 16bpp */
56 DCPOMATIC_ASSERT (_pixel_format == AV_PIX_FMT_RGB48 || _pixel_format == AV_PIX_FMT_XYZ12LE);
59 J2KImageProxy::J2KImageProxy (
60 shared_ptr<const dcp::MonoPictureFrame> frame,
62 AVPixelFormat pixel_format,
63 optional<int> forced_reduction
65 : _data (frame->j2k_size ())
67 , _pixel_format (pixel_format)
68 , _forced_reduction (forced_reduction)
70 /* ::image assumes 16bpp */
71 DCPOMATIC_ASSERT (_pixel_format == AV_PIX_FMT_RGB48 || _pixel_format == AV_PIX_FMT_XYZ12LE);
72 memcpy (_data.data().get(), frame->j2k_data(), _data.size ());
75 J2KImageProxy::J2KImageProxy (
76 shared_ptr<const dcp::StereoPictureFrame> frame,
79 AVPixelFormat pixel_format,
80 optional<int> forced_reduction
84 , _pixel_format (pixel_format)
85 , _forced_reduction (forced_reduction)
87 /* ::image assumes 16bpp */
88 DCPOMATIC_ASSERT (_pixel_format == AV_PIX_FMT_RGB48 || _pixel_format == AV_PIX_FMT_XYZ12LE);
91 _data = Data (frame->left_j2k_size ());
92 memcpy (_data.data().get(), frame->left_j2k_data(), _data.size ());
95 _data = Data (frame->right_j2k_size ());
96 memcpy (_data.data().get(), frame->right_j2k_data(), _data.size ());
101 J2KImageProxy::J2KImageProxy (shared_ptr<cxml::Node> xml, shared_ptr<Socket> socket)
103 _size = dcp::Size (xml->number_child<int> ("Width"), xml->number_child<int> ("Height"));
104 if (xml->optional_number_child<int> ("Eye")) {
105 _eye = static_cast<dcp::Eye> (xml->number_child<int> ("Eye"));
107 _data = Data (xml->number_child<int> ("Size"));
108 /* This only matters when we are using J2KImageProxy for the preview, which
109 will never use this constructor (which is only used for passing data to
110 encode servers). So we can put anything in here. It's a bit of a hack.
112 _pixel_format = AV_PIX_FMT_XYZ12LE;
113 socket->read (_data.data().get (), _data.size ());
117 J2KImageProxy::prepare (optional<dcp::Size> target_size) const
119 boost::mutex::scoped_lock lm (_mutex);
121 if (_decompressed && target_size == _target_size) {
122 DCPOMATIC_ASSERT (_reduce);
128 if (_forced_reduction) {
129 reduce = *_forced_reduction;
131 while (target_size && (_size.width / pow(2, reduce)) > target_size->width && (_size.height / pow(2, reduce)) > target_size->height) {
136 reduce = max (0, reduce);
139 _decompressed = dcp::decompress_j2k (const_cast<uint8_t*> (_data.data().get()), _data.size (), reduce);
141 if (_decompressed->precision(0) < 12) {
142 int const shift = 12 - _decompressed->precision (0);
143 for (int c = 0; c < 3; ++c) {
144 int* p = _decompressed->data (c);
145 for (int y = 0; y < _decompressed->size().height; ++y) {
146 for (int x = 0; x < _decompressed->size().width; ++x) {
153 _target_size = target_size;
159 pair<shared_ptr<Image>, int>
160 J2KImageProxy::image (optional<dcp::NoteHandler>, optional<dcp::Size> target_size) const
162 int const reduce = prepare (target_size);
164 shared_ptr<Image> image (new Image (_pixel_format, _decompressed->size(), true));
166 /* Copy data in whatever format (sRGB or XYZ) into our Image; I'm assuming
167 the data is 12-bit either way.
170 int const width = _decompressed->size().width;
173 for (int y = 0; y < _decompressed->size().height; ++y) {
174 uint16_t* q = (uint16_t *) (image->data()[0] + y * image->stride()[0]);
175 for (int x = 0; x < width; ++x) {
176 for (int c = 0; c < 3; ++c) {
177 *q++ = _decompressed->data(c)[p] << 4;
183 return make_pair (image, reduce);
187 J2KImageProxy::add_metadata (xmlpp::Node* node) const
189 node->add_child("Type")->add_child_text (N_("J2K"));
190 node->add_child("Width")->add_child_text (raw_convert<string> (_size.width));
191 node->add_child("Height")->add_child_text (raw_convert<string> (_size.height));
193 node->add_child("Eye")->add_child_text (raw_convert<string> (static_cast<int> (_eye.get ())));
195 node->add_child("Size")->add_child_text (raw_convert<string> (_data.size ()));
199 J2KImageProxy::send_binary (shared_ptr<Socket> socket) const
201 socket->write (_data.data().get(), _data.size());
205 J2KImageProxy::same (shared_ptr<const ImageProxy> other) const
207 shared_ptr<const J2KImageProxy> jp = dynamic_pointer_cast<const J2KImageProxy> (other);
212 if (_data.size() != jp->_data.size()) {
216 return memcmp (_data.data().get(), jp->_data.data().get(), _data.size()) == 0;
219 J2KImageProxy::J2KImageProxy (Data data, dcp::Size size, AVPixelFormat pixel_format)
222 , _pixel_format (pixel_format)
224 /* ::image assumes 16bpp */
225 DCPOMATIC_ASSERT (_pixel_format == AV_PIX_FMT_RGB48 || _pixel_format == AV_PIX_FMT_XYZ12LE);
229 J2KImageProxy::memory_used () const
231 size_t m = _data.size();
233 /* 3 components, 16-bits per pixel */
234 m += 3 * 2 * _decompressed->size().width * _decompressed->size().height;