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 (_image && 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 shared_ptr<dcp::OpenJPEGImage> decompressed = dcp::decompress_j2k (const_cast<uint8_t*> (_data.data().get()), _data.size (), reduce);
140 _image.reset (new Image (_pixel_format, decompressed->size(), true));
142 int const shift = 16 - decompressed->precision (0);
144 /* Copy data in whatever format (sRGB or XYZ) into our Image; I'm assuming
145 the data is 12-bit either way.
148 int const width = decompressed->size().width;
151 int* decomp_0 = decompressed->data (0);
152 int* decomp_1 = decompressed->data (1);
153 int* decomp_2 = decompressed->data (2);
154 for (int y = 0; y < decompressed->size().height; ++y) {
155 uint16_t* q = (uint16_t *) (_image->data()[0] + y * _image->stride()[0]);
156 for (int x = 0; x < width; ++x) {
157 *q++ = decomp_0[p] << shift;
158 *q++ = decomp_1[p] << shift;
159 *q++ = decomp_2[p] << shift;
164 _target_size = target_size;
170 pair<shared_ptr<Image>, int>
171 J2KImageProxy::image (optional<dcp::Size> target_size) const
173 int const r = prepare (target_size);
174 /* I think this is safe without a lock on mutex. _image is guaranteed to be
175 set up when prepare() has happened.
177 return make_pair (_image, r);
181 J2KImageProxy::add_metadata (xmlpp::Node* node) const
183 node->add_child("Type")->add_child_text (N_("J2K"));
184 node->add_child("Width")->add_child_text (raw_convert<string> (_size.width));
185 node->add_child("Height")->add_child_text (raw_convert<string> (_size.height));
187 node->add_child("Eye")->add_child_text (raw_convert<string> (static_cast<int> (_eye.get ())));
189 node->add_child("Size")->add_child_text (raw_convert<string> (_data.size ()));
193 J2KImageProxy::send_binary (shared_ptr<Socket> socket) const
195 socket->write (_data.data().get(), _data.size());
199 J2KImageProxy::same (shared_ptr<const ImageProxy> other) const
201 shared_ptr<const J2KImageProxy> jp = dynamic_pointer_cast<const J2KImageProxy> (other);
206 if (_data.size() != jp->_data.size()) {
210 return memcmp (_data.data().get(), jp->_data.data().get(), _data.size()) == 0;
213 J2KImageProxy::J2KImageProxy (Data data, dcp::Size size, AVPixelFormat pixel_format)
216 , _pixel_format (pixel_format)
218 /* ::image assumes 16bpp */
219 DCPOMATIC_ASSERT (_pixel_format == AV_PIX_FMT_RGB48 || _pixel_format == AV_PIX_FMT_XYZ12LE);
223 J2KImageProxy::memory_used () const
225 size_t m = _data.size();
227 /* 3 components, 16-bits per pixel */
228 m += 3 * 2 * _image->size().width * _image->size().height;