2 Copyright (C) 2012-2014 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 <openssl/md5.h>
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>
52 #include <libdcp/raw_convert.h>
53 #include <libcxml/cxml.h>
55 #include "dcp_video_frame.h"
57 #include "exceptions.h"
64 #include "player_video_frame.h"
69 using std::stringstream;
71 using boost::shared_ptr;
73 using libdcp::raw_convert;
75 #define DCI_COEFFICENT (48.0 / 52.37)
77 /** Construct a DCP video frame.
78 * @param frame Input frame.
79 * @param index Index of the frame within the DCP.
80 * @param bw J2K bandwidth to use (see Config::j2k_bandwidth ())
81 * @param l Log to write to.
83 DCPVideoFrame::DCPVideoFrame (
84 shared_ptr<const PlayerVideoFrame> frame, int index, int dcp_fps, int bw, Resolution r, shared_ptr<Log> l
88 , _frames_per_second (dcp_fps)
96 DCPVideoFrame::DCPVideoFrame (shared_ptr<const PlayerVideoFrame> frame, shared_ptr<const cxml::Node> node, shared_ptr<Log> log)
100 _index = node->number_child<int> ("Index");
101 _frames_per_second = node->number_child<int> ("FramesPerSecond");
102 _j2k_bandwidth = node->number_child<int> ("J2KBandwidth");
103 _resolution = Resolution (node->optional_number_child<int>("Resolution").get_value_or (RESOLUTION_2K));
106 /** J2K-encode this frame on the local host.
107 * @return Encoded data.
109 shared_ptr<EncodedData>
110 DCPVideoFrame::encode_locally ()
112 shared_ptr<libdcp::LUT> in_lut;
113 if (_frame->colour_conversion().input_gamma_linearised) {
114 in_lut = libdcp::SRGBLinearisedGammaLUT::cache.get (12, _frame->colour_conversion().input_gamma);
116 in_lut = libdcp::GammaLUT::cache.get (12, _frame->colour_conversion().input_gamma);
119 /* XXX: libdcp should probably use boost */
122 for (int i = 0; i < 3; ++i) {
123 for (int j = 0; j < 3; ++j) {
124 matrix[i][j] = _frame->colour_conversion().matrix (i, j);
128 shared_ptr<libdcp::XYZFrame> xyz = libdcp::rgb_to_xyz (
131 libdcp::GammaLUT::cache.get (16, 1 / _frame->colour_conversion().output_gamma),
137 MD5_Init (&md5_context);
138 MD5_Update (&md5_context, xyz->data(0), 1998 * 1080 * 4);
139 MD5_Update (&md5_context, xyz->data(1), 1998 * 1080 * 4);
140 MD5_Update (&md5_context, xyz->data(2), 1998 * 1080 * 4);
141 unsigned char digest[MD5_DIGEST_LENGTH];
142 MD5_Final (digest, &md5_context);
145 for (int i = 0; i < MD5_DIGEST_LENGTH; ++i) {
146 s << std::hex << std::setfill('0') << std::setw(2) << ((int) digest[i]);
150 /* Set the max image and component sizes based on frame_rate */
151 int max_cs_len = ((float) _j2k_bandwidth) / 8 / _frames_per_second;
152 if (_frame->eyes() == EYES_LEFT || _frame->eyes() == EYES_RIGHT) {
153 /* In 3D we have only half the normal bandwidth per eye */
156 int const max_comp_size = max_cs_len / 1.25;
158 /* get a J2K compressor handle */
159 opj_cinfo_t* cinfo = opj_create_compress (CODEC_J2K);
161 throw EncodeError (N_("could not create JPEG2000 encoder"));
164 /* Set encoding parameters to default values */
165 opj_cparameters_t parameters;
166 opj_set_default_encoder_parameters (¶meters);
168 /* Set default cinema parameters */
169 parameters.tile_size_on = false;
170 parameters.cp_tdx = 1;
171 parameters.cp_tdy = 1;
174 parameters.tp_flag = 'C';
175 parameters.tp_on = 1;
177 /* Tile and Image shall be at (0,0) */
178 parameters.cp_tx0 = 0;
179 parameters.cp_ty0 = 0;
180 parameters.image_offset_x0 = 0;
181 parameters.image_offset_y0 = 0;
183 /* Codeblock size = 32x32 */
184 parameters.cblockw_init = 32;
185 parameters.cblockh_init = 32;
186 parameters.csty |= 0x01;
188 /* The progression order shall be CPRL */
189 parameters.prog_order = CPRL;
192 parameters.roi_compno = -1;
194 parameters.subsampling_dx = 1;
195 parameters.subsampling_dy = 1;
198 parameters.irreversible = 1;
200 parameters.tcp_rates[0] = 0;
201 parameters.tcp_numlayers++;
202 parameters.cp_disto_alloc = 1;
203 parameters.cp_rsiz = _resolution == RESOLUTION_2K ? CINEMA2K : CINEMA4K;
204 if (_resolution == RESOLUTION_4K) {
205 parameters.numpocs = 2;
206 parameters.POC[0].tile = 1;
207 parameters.POC[0].resno0 = 0;
208 parameters.POC[0].compno0 = 0;
209 parameters.POC[0].layno1 = 1;
210 parameters.POC[0].resno1 = parameters.numresolution - 1;
211 parameters.POC[0].compno1 = 3;
212 parameters.POC[0].prg1 = CPRL;
213 parameters.POC[1].tile = 1;
214 parameters.POC[1].resno0 = parameters.numresolution - 1;
215 parameters.POC[1].compno0 = 0;
216 parameters.POC[1].layno1 = 1;
217 parameters.POC[1].resno1 = parameters.numresolution;
218 parameters.POC[1].compno1 = 3;
219 parameters.POC[1].prg1 = CPRL;
222 parameters.cp_comment = strdup (N_("DCP-o-matic"));
223 parameters.cp_cinema = _resolution == RESOLUTION_2K ? CINEMA2K_24 : CINEMA4K_24;
225 /* 3 components, so use MCT */
226 parameters.tcp_mct = 1;
229 parameters.max_comp_size = max_comp_size;
230 parameters.tcp_rates[0] = ((float) (3 * xyz->size().width * xyz->size().height * 12)) / (max_cs_len * 8);
232 /* Set event manager to null (openjpeg 1.3 bug) */
233 cinfo->event_mgr = 0;
235 /* Setup the encoder parameters using the current image and user parameters */
236 opj_setup_encoder (cinfo, ¶meters, xyz->opj_image ());
238 opj_cio_t* cio = opj_cio_open ((opj_common_ptr) cinfo, 0, 0);
240 opj_destroy_compress (cinfo);
241 throw EncodeError (N_("could not open JPEG2000 stream"));
244 int const r = opj_encode (cinfo, cio, xyz->opj_image(), 0);
247 opj_destroy_compress (cinfo);
248 throw EncodeError (N_("JPEG2000 encoding failed"));
251 switch (_frame->eyes()) {
253 _log->log (String::compose (N_("Finished locally-encoded frame %1 for mono"), _index));
256 _log->log (String::compose (N_("Finished locally-encoded frame %1 for L"), _index));
259 _log->log (String::compose (N_("Finished locally-encoded frame %1 for R"), _index));
265 shared_ptr<EncodedData> enc (new LocallyEncodedData (cio->buffer, cio_tell (cio)));
268 free (parameters.cp_comment);
269 opj_destroy_compress (cinfo);
274 /** Send this frame to a remote server for J2K encoding, then read the result.
275 * @param serv Server to send to.
276 * @return Encoded data.
278 shared_ptr<EncodedData>
279 DCPVideoFrame::encode_remotely (ServerDescription serv)
281 boost::asio::io_service io_service;
282 boost::asio::ip::tcp::resolver resolver (io_service);
283 boost::asio::ip::tcp::resolver::query query (serv.host_name(), raw_convert<string> (Config::instance()->server_port_base ()));
284 boost::asio::ip::tcp::resolver::iterator endpoint_iterator = resolver.resolve (query);
286 shared_ptr<Socket> socket (new Socket);
288 socket->connect (*endpoint_iterator);
290 /* Collect all XML metadata */
292 xmlpp::Element* root = doc.create_root_node ("EncodingRequest");
293 root->add_child("Version")->add_child_text (raw_convert<string> (SERVER_LINK_VERSION));
296 _log->log (String::compose (N_("Sending frame %1 to remote"), _index));
298 /* Send XML metadata */
300 doc.write_to_stream (xml, "UTF-8");
301 socket->write (xml.str().length() + 1);
302 socket->write ((uint8_t *) xml.str().c_str(), xml.str().length() + 1);
304 /* Send binary data */
305 _frame->send_binary (socket);
307 /* Read the response (JPEG2000-encoded data); this blocks until the data
308 is ready and sent back.
310 shared_ptr<EncodedData> e (new RemotelyEncodedData (socket->read_uint32 ()));
311 socket->read (e->data(), e->size());
313 _log->log (String::compose (N_("Finished remotely-encoded frame %1"), _index));
319 DCPVideoFrame::add_metadata (xmlpp::Element* el) const
321 el->add_child("Index")->add_child_text (raw_convert<string> (_index));
322 el->add_child("FramesPerSecond")->add_child_text (raw_convert<string> (_frames_per_second));
323 el->add_child("J2KBandwidth")->add_child_text (raw_convert<string> (_j2k_bandwidth));
324 el->add_child("Resolution")->add_child_text (raw_convert<string> (int (_resolution)));
325 _frame->add_metadata (el);
329 DCPVideoFrame::eyes () const
331 return _frame->eyes ();
334 EncodedData::EncodedData (int s)
335 : _data (new uint8_t[s])
341 EncodedData::EncodedData (boost::filesystem::path file)
343 _size = boost::filesystem::file_size (file);
344 _data = new uint8_t[_size];
346 FILE* f = fopen_boost (file, "rb");
348 throw FileError (_("could not open file for reading"), file);
351 size_t const r = fread (_data, 1, _size, f);
352 if (r != size_t (_size)) {
354 throw FileError (_("could not read encoded data"), file);
361 EncodedData::~EncodedData ()
366 /** Write this data to a J2K file.
368 * @param frame DCP frame index.
371 EncodedData::write (shared_ptr<const Film> film, int frame, Eyes eyes) const
373 boost::filesystem::path const tmp_j2c = film->j2c_path (frame, eyes, true);
375 FILE* f = fopen_boost (tmp_j2c, "wb");
378 throw WriteFileError (tmp_j2c, errno);
381 fwrite (_data, 1, _size, f);
384 boost::filesystem::path const real_j2c = film->j2c_path (frame, eyes, false);
386 /* Rename the file from foo.j2c.tmp to foo.j2c now that it is complete */
387 boost::filesystem::rename (tmp_j2c, real_j2c);
391 EncodedData::write_info (shared_ptr<const Film> film, int frame, Eyes eyes, libdcp::FrameInfo fin) const
393 boost::filesystem::path const info = film->info_path (frame, eyes);
394 FILE* h = fopen_boost (info, "w");
399 /** Send this data to a socket.
400 * @param socket Socket
403 EncodedData::send (shared_ptr<Socket> socket)
405 socket->write (_size);
406 socket->write (_data, _size);
409 LocallyEncodedData::LocallyEncodedData (uint8_t* d, int s)
412 memcpy (_data, d, s);
415 /** @param s Size of data in bytes */
416 RemotelyEncodedData::RemotelyEncodedData (int s)