2 Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
3 Taken from code Copyright (C) 2010-2011 Terrence Meiczinger
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 /** @file src/dcp_video_frame.cc
22 * @brief A single frame of video destined for a DCP.
24 * Given an Image and some settings, this class knows how to encode
25 * the image to J2K either on the local host or on a remote server.
27 * Objects of this class are used for the queue that we keep
28 * of images that require encoding.
42 #include <boost/array.hpp>
43 #include <boost/asio.hpp>
44 #include <boost/filesystem.hpp>
45 #include <boost/lexical_cast.hpp>
46 #include <libdcp/rec709_linearised_gamma_lut.h>
47 #include <libdcp/srgb_linearised_gamma_lut.h>
48 #include <libdcp/gamma_lut.h>
49 #include <libdcp/xyz_frame.h>
50 #include <libdcp/rgb_xyz.h>
51 #include <libdcp/colour_matrix.h>
53 #include "dcp_video_frame.h"
55 #include "exceptions.h"
65 using std::stringstream;
68 using boost::shared_ptr;
71 #define DCI_COEFFICENT (48.0 / 52.37)
73 /** Construct a DCP video frame.
74 * @param input Input image.
75 * @param f Index of the frame within the DCP.
76 * @param bw J2K bandwidth to use (see Config::j2k_bandwidth ())
77 * @param l Log to write to.
79 DCPVideoFrame::DCPVideoFrame (
80 shared_ptr<const Image> image, int f, int dcp_fps, int bw, shared_ptr<Log> l
84 , _frames_per_second (dcp_fps)
94 DCPVideoFrame::~DCPVideoFrame ()
101 opj_destroy_compress (_cinfo);
105 free (_parameters->cp_comment);
111 /** J2K-encode this frame on the local host.
112 * @return Encoded data.
114 shared_ptr<EncodedData>
115 DCPVideoFrame::encode_locally ()
117 shared_ptr<libdcp::XYZFrame> xyz = libdcp::rgb_to_xyz (
119 libdcp::SRGBLinearisedGammaLUT::cache.get (12, 2.4),
120 libdcp::GammaLUT::cache.get (16, 1 / 2.6),
121 libdcp::colour_matrix::srgb_to_xyz
124 /* Set the max image and component sizes based on frame_rate */
125 int const max_cs_len = ((float) _j2k_bandwidth) / 8 / _frames_per_second;
126 int const max_comp_size = max_cs_len / 1.25;
128 /* Set encoding parameters to default values */
129 _parameters = new opj_cparameters_t;
130 opj_set_default_encoder_parameters (_parameters);
132 /* Set default cinema parameters */
133 _parameters->tile_size_on = false;
134 _parameters->cp_tdx = 1;
135 _parameters->cp_tdy = 1;
138 _parameters->tp_flag = 'C';
139 _parameters->tp_on = 1;
141 /* Tile and Image shall be at (0,0) */
142 _parameters->cp_tx0 = 0;
143 _parameters->cp_ty0 = 0;
144 _parameters->image_offset_x0 = 0;
145 _parameters->image_offset_y0 = 0;
147 /* Codeblock size = 32x32 */
148 _parameters->cblockw_init = 32;
149 _parameters->cblockh_init = 32;
150 _parameters->csty |= 0x01;
152 /* The progression order shall be CPRL */
153 _parameters->prog_order = CPRL;
156 _parameters->roi_compno = -1;
158 _parameters->subsampling_dx = 1;
159 _parameters->subsampling_dy = 1;
162 _parameters->irreversible = 1;
164 _parameters->tcp_rates[0] = 0;
165 _parameters->tcp_numlayers++;
166 _parameters->cp_disto_alloc = 1;
167 _parameters->cp_rsiz = CINEMA2K;
168 _parameters->cp_comment = strdup (N_("DCP-o-matic"));
169 _parameters->cp_cinema = CINEMA2K_24;
171 /* 3 components, so use MCT */
172 _parameters->tcp_mct = 1;
175 _parameters->max_comp_size = max_comp_size;
176 _parameters->tcp_rates[0] = ((float) (3 * xyz->size().width * xyz->size().height * 12)) / (max_cs_len * 8);
178 /* get a J2K compressor handle */
179 _cinfo = opj_create_compress (CODEC_J2K);
181 throw EncodeError (N_("could not create JPEG2000 encoder"));
184 /* Set event manager to null (openjpeg 1.3 bug) */
185 _cinfo->event_mgr = 0;
187 /* Setup the encoder parameters using the current image and user parameters */
188 opj_setup_encoder (_cinfo, _parameters, xyz->opj_image ());
190 _cio = opj_cio_open ((opj_common_ptr) _cinfo, 0, 0);
192 throw EncodeError (N_("could not open JPEG2000 stream"));
195 int const r = opj_encode (_cinfo, _cio, xyz->opj_image(), 0);
197 throw EncodeError (N_("JPEG2000 encoding failed"));
200 _log->log (String::compose (N_("Finished locally-encoded frame %1"), _frame));
202 return shared_ptr<EncodedData> (new LocallyEncodedData (_cio->buffer, cio_tell (_cio)));
205 /** Send this frame to a remote server for J2K encoding, then read the result.
206 * @param serv Server to send to.
207 * @return Encoded data.
209 shared_ptr<EncodedData>
210 DCPVideoFrame::encode_remotely (ServerDescription const * serv)
212 boost::asio::io_service io_service;
213 boost::asio::ip::tcp::resolver resolver (io_service);
214 boost::asio::ip::tcp::resolver::query query (serv->host_name(), boost::lexical_cast<string> (Config::instance()->server_port ()));
215 boost::asio::ip::tcp::resolver::iterator endpoint_iterator = resolver.resolve (query);
217 shared_ptr<Socket> socket (new Socket);
219 socket->connect (*endpoint_iterator);
222 s << N_("encode please\n")
223 << N_("width ") << _image->size().width << N_("\n")
224 << N_("height ") << _image->size().height << N_("\n")
225 << N_("frame ") << _frame << N_("\n")
226 << N_("frames_per_second ") << _frames_per_second << N_("\n")
227 << N_("j2k_bandwidth ") << _j2k_bandwidth << N_("\n");
229 _log->log (String::compose (
230 N_("Sending to remote; pixel format %1, components %2, lines (%3,%4,%5), line sizes (%6,%7,%8)"),
231 _image->pixel_format(), _image->components(),
232 _image->lines(0), _image->lines(1), _image->lines(2),
233 _image->line_size()[0], _image->line_size()[1], _image->line_size()[2]
236 socket->write (s.str().length() + 1);
237 socket->write ((uint8_t *) s.str().c_str(), s.str().length() + 1);
239 _image->write_to_socket (socket);
241 shared_ptr<EncodedData> e (new RemotelyEncodedData (socket->read_uint32 ()));
242 socket->read (e->data(), e->size());
244 _log->log (String::compose (N_("Finished remotely-encoded frame %1"), _frame));
249 EncodedData::EncodedData (int s)
250 : _data (new uint8_t[s])
256 EncodedData::EncodedData (string file)
258 _size = boost::filesystem::file_size (file);
259 _data = new uint8_t[_size];
261 FILE* f = fopen (file.c_str(), N_("rb"));
263 throw FileError (_("could not open file for reading"), file);
266 fread (_data, 1, _size, f);
271 EncodedData::~EncodedData ()
276 /** Write this data to a J2K file.
278 * @param frame DCP frame index.
281 EncodedData::write (shared_ptr<const Film> film, int frame) const
283 string const tmp_j2c = film->j2c_path (frame, true);
285 FILE* f = fopen (tmp_j2c.c_str (), N_("wb"));
288 throw WriteFileError (tmp_j2c, errno);
291 fwrite (_data, 1, _size, f);
294 string const real_j2c = film->j2c_path (frame, false);
296 /* Rename the file from foo.j2c.tmp to foo.j2c now that it is complete */
297 boost::filesystem::rename (tmp_j2c, real_j2c);
301 EncodedData::write_info (shared_ptr<const Film> film, int frame, libdcp::FrameInfo fin) const
303 string const info = film->info_path (frame);
304 ofstream h (info.c_str());
308 /** Send this data to a socket.
309 * @param socket Socket
312 EncodedData::send (shared_ptr<Socket> socket)
314 socket->write (_size);
315 socket->write (_data, _size);
318 LocallyEncodedData::LocallyEncodedData (uint8_t* d, int s)
321 memcpy (_data, d, s);
324 /** @param s Size of data in bytes */
325 RemotelyEncodedData::RemotelyEncodedData (int s)