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);
141 _image.reset (new Image (_pixel_format, decompressed->size(), true));
143 int const shift = 16 - decompressed->precision (0);
145 /* Copy data in whatever format (sRGB or XYZ) into our Image; I'm assuming
146 the data is 12-bit either way.
149 int const width = decompressed->size().width;
152 int* decomp_0 = decompressed->data (0);
153 int* decomp_1 = decompressed->data (1);
154 int* decomp_2 = decompressed->data (2);
155 for (int y = 0; y < decompressed->size().height; ++y) {
156 uint16_t* q = (uint16_t *) (_image->data()[0] + y * _image->stride()[0]);
157 for (int x = 0; x < width; ++x) {
158 *q++ = decomp_0[p] << shift;
159 *q++ = decomp_1[p] << shift;
160 *q++ = decomp_2[p] << shift;
165 _target_size = target_size;
171 pair<shared_ptr<Image>, int>
172 J2KImageProxy::image (optional<dcp::Size> target_size) const
174 int const r = prepare (target_size);
175 /* I think this is safe without a lock on mutex. _image is guaranteed to be
176 set up when prepare() has happened.
178 return make_pair (_image, r);
182 J2KImageProxy::add_metadata (xmlpp::Node* node) const
184 node->add_child("Type")->add_child_text (N_("J2K"));
185 node->add_child("Width")->add_child_text (raw_convert<string> (_size.width));
186 node->add_child("Height")->add_child_text (raw_convert<string> (_size.height));
188 node->add_child("Eye")->add_child_text (raw_convert<string> (static_cast<int> (_eye.get ())));
190 node->add_child("Size")->add_child_text (raw_convert<string> (_data.size ()));
194 J2KImageProxy::send_binary (shared_ptr<Socket> socket) const
196 socket->write (_data.data().get(), _data.size());
200 J2KImageProxy::same (shared_ptr<const ImageProxy> other) const
202 shared_ptr<const J2KImageProxy> jp = dynamic_pointer_cast<const J2KImageProxy> (other);
207 if (_data.size() != jp->_data.size()) {
211 return memcmp (_data.data().get(), jp->_data.data().get(), _data.size()) == 0;
214 J2KImageProxy::J2KImageProxy (Data data, dcp::Size size, AVPixelFormat pixel_format)
217 , _pixel_format (pixel_format)
219 /* ::image assumes 16bpp */
220 DCPOMATIC_ASSERT (_pixel_format == AV_PIX_FMT_RGB48 || _pixel_format == AV_PIX_FMT_XYZ12LE);
224 J2KImageProxy::memory_used () const
226 size_t m = _data.size();
228 /* 3 components, 16-bits per pixel */
229 m += 3 * 2 * _image->size().width * _image->size().height;