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>
47 #include "dcp_video_frame.h"
50 #include "film_state.h"
52 #include "exceptions.h"
60 using namespace boost;
62 /** Construct a DCP video frame.
63 * @param input Input image.
64 * @param out Required size of output, in pixels (including any padding).
65 * @param s Scaler to use.
66 * @param p Number of pixels of padding either side of the image.
67 * @param f Index of the frame within the Film.
68 * @param fps Frames per second of the Film.
69 * @param pp FFmpeg post-processing string to use.
70 * @param clut Colour look-up table to use (see Config::colour_lut_index ())
71 * @param bw J2K bandwidth to use (see Config::j2k_bandwidth ())
72 * @param l Log to write to.
74 DCPVideoFrame::DCPVideoFrame (
75 shared_ptr<Image> yuv, Size out, int p, Scaler const * s, int f, float fps, string pp, int clut, int bw, Log* l)
81 /* we round here; not sure if this is right */
82 , _frames_per_second (rint (fps))
84 , _colour_lut_index (clut)
95 /** Create a libopenjpeg container suitable for our output image */
97 DCPVideoFrame::create_openjpeg_container ()
99 for (int i = 0; i < 3; ++i) {
102 _cmptparm[i].w = _out_size.width;
103 _cmptparm[i].h = _out_size.height;
106 _cmptparm[i].prec = 12;
107 _cmptparm[i].bpp = 12;
108 _cmptparm[i].sgnd = 0;
111 _image = opj_image_create (3, &_cmptparm[0], CLRSPC_SRGB);
113 throw EncodeError ("could not create libopenjpeg image");
118 _image->x1 = _out_size.width;
119 _image->y1 = _out_size.height;
122 DCPVideoFrame::~DCPVideoFrame ()
125 opj_image_destroy (_image);
129 opj_cio_close (_cio);
133 opj_destroy_compress (_cinfo);
137 free (_parameters->cp_comment);
138 free (_parameters->cp_matrice);
144 /** J2K-encode this frame on the local host.
145 * @return Encoded data.
147 shared_ptr<EncodedData>
148 DCPVideoFrame::encode_locally ()
150 shared_ptr<Image> prepared = _input;
152 if (!_post_process.empty ()) {
153 prepared = prepared->post_process (_post_process);
156 prepared = prepared->scale_and_convert_to_rgb (_out_size, _padding, _scaler);
158 create_openjpeg_container ();
160 int const size = _out_size.width * _out_size.height;
170 /* Copy our RGB into the openjpeg container, converting to XYZ in the process */
172 uint8_t* p = prepared->data()[0];
173 for (int i = 0; i < size; ++i) {
174 /* In gamma LUT (converting 8-bit input to 12-bit) */
175 s.r = lut_in[_colour_lut_index][*p++ << 4];
176 s.g = lut_in[_colour_lut_index][*p++ << 4];
177 s.b = lut_in[_colour_lut_index][*p++ << 4];
179 /* RGB to XYZ Matrix */
180 d.x = ((s.r * color_matrix[_colour_lut_index][0][0]) + (s.g * color_matrix[_colour_lut_index][0][1]) + (s.b * color_matrix[_colour_lut_index][0][2]));
181 d.y = ((s.r * color_matrix[_colour_lut_index][1][0]) + (s.g * color_matrix[_colour_lut_index][1][1]) + (s.b * color_matrix[_colour_lut_index][1][2]));
182 d.z = ((s.r * color_matrix[_colour_lut_index][2][0]) + (s.g * color_matrix[_colour_lut_index][2][1]) + (s.b * color_matrix[_colour_lut_index][2][2]));
185 d.x = d.x * DCI_COEFFICENT * (DCI_LUT_SIZE - 1);
186 d.y = d.y * DCI_COEFFICENT * (DCI_LUT_SIZE - 1);
187 d.z = d.z * DCI_COEFFICENT * (DCI_LUT_SIZE - 1);
190 _image->comps[0].data[i] = lut_out[LO_DCI][(int) d.x];
191 _image->comps[1].data[i] = lut_out[LO_DCI][(int) d.y];
192 _image->comps[2].data[i] = lut_out[LO_DCI][(int) d.z];
195 /* Set the max image and component sizes based on frame_rate */
196 int const max_cs_len = ((float) _j2k_bandwidth) / 8 / _frames_per_second;
197 int const max_comp_size = max_cs_len / 1.25;
199 /* Set encoding parameters to default values */
200 _parameters = new opj_cparameters_t;
201 opj_set_default_encoder_parameters (_parameters);
203 /* Set default cinema parameters */
204 _parameters->tile_size_on = false;
205 _parameters->cp_tdx = 1;
206 _parameters->cp_tdy = 1;
209 _parameters->tp_flag = 'C';
210 _parameters->tp_on = 1;
212 /* Tile and Image shall be at (0,0) */
213 _parameters->cp_tx0 = 0;
214 _parameters->cp_ty0 = 0;
215 _parameters->image_offset_x0 = 0;
216 _parameters->image_offset_y0 = 0;
218 /* Codeblock size = 32x32 */
219 _parameters->cblockw_init = 32;
220 _parameters->cblockh_init = 32;
221 _parameters->csty |= 0x01;
223 /* The progression order shall be CPRL */
224 _parameters->prog_order = CPRL;
227 _parameters->roi_compno = -1;
229 _parameters->subsampling_dx = 1;
230 _parameters->subsampling_dy = 1;
233 _parameters->irreversible = 1;
235 _parameters->tcp_rates[0] = 0;
236 _parameters->tcp_numlayers++;
237 _parameters->cp_disto_alloc = 1;
238 _parameters->cp_rsiz = CINEMA2K;
239 _parameters->cp_comment = strdup ("DVD-o-matic");
240 _parameters->cp_cinema = CINEMA2K_24;
242 /* 3 components, so use MCT */
243 _parameters->tcp_mct = 1;
246 _parameters->max_comp_size = max_comp_size;
247 _parameters->tcp_rates[0] = ((float) (3 * _image->comps[0].w * _image->comps[0].h * _image->comps[0].prec)) / (max_cs_len * 8);
249 /* get a J2K compressor handle */
250 _cinfo = opj_create_compress (CODEC_J2K);
252 /* Set event manager to null (openjpeg 1.3 bug) */
253 _cinfo->event_mgr = 0;
255 /* Setup the encoder parameters using the current image and user parameters */
256 opj_setup_encoder (_cinfo, _parameters, _image);
258 _cio = opj_cio_open ((opj_common_ptr) _cinfo, 0, 0);
260 int const r = opj_encode (_cinfo, _cio, _image, 0);
262 throw EncodeError ("jpeg2000 encoding failed");
265 _log->log (String::compose ("Finished locally-encoded frame %1", _frame));
267 return shared_ptr<EncodedData> (new LocallyEncodedData (_cio->buffer, cio_tell (_cio)));
270 /** Send this frame to a remote server for J2K encoding, then read the result.
271 * @param serv Server to send to.
272 * @return Encoded data.
274 shared_ptr<EncodedData>
275 DCPVideoFrame::encode_remotely (ServerDescription const * serv)
277 asio::io_service io_service;
278 asio::ip::tcp::resolver resolver (io_service);
279 asio::ip::tcp::resolver::query query (serv->host_name(), boost::lexical_cast<string> (Config::instance()->server_port ()));
280 asio::ip::tcp::resolver::iterator endpoint_iterator = resolver.resolve (query);
284 socket.connect (*endpoint_iterator, 30);
288 << _input->size().width << " " << _input->size().height << " "
289 << _input->pixel_format() << " "
290 << _out_size.width << " " << _out_size.height << " "
292 << _scaler->id () << " "
294 << _frames_per_second << " "
295 << (_post_process.empty() ? "none" : _post_process) << " "
296 << Config::instance()->colour_lut_index () << " "
297 << Config::instance()->j2k_bandwidth () << " ";
299 for (int i = 0; i < _input->components(); ++i) {
300 s << _input->line_size()[i] << " ";
303 socket.write ((uint8_t *) s.str().c_str(), s.str().length() + 1, 30);
305 for (int i = 0; i < _input->components(); ++i) {
306 socket.write (_input->data()[i], _input->line_size()[i] * _input->lines(i), 30);
310 socket.read_indefinite ((uint8_t *) buffer, sizeof (buffer), 30);
311 socket.consume (strlen (buffer) + 1);
312 shared_ptr<EncodedData> e (new RemotelyEncodedData (atoi (buffer)));
314 /* now read the rest */
315 socket.read_definite_and_consume (e->data(), e->size(), 30);
317 _log->log (String::compose ("Finished remotely-encoded frame %1", _frame));
322 /** Write this data to a J2K file.
323 * @param opt Options.
324 * @param frame Frame index.
327 EncodedData::write (shared_ptr<const Options> opt, int frame)
329 string const tmp_j2k = opt->frame_out_path (frame, true);
331 FILE* f = fopen (tmp_j2k.c_str (), "wb");
334 throw WriteFileError (tmp_j2k, errno);
337 fwrite (_data, 1, _size, f);
340 string const real_j2k = opt->frame_out_path (frame, false);
342 /* Rename the file from foo.j2c.tmp to foo.j2c now that it is complete */
343 filesystem::rename (tmp_j2k, real_j2k);
345 /* Write a file containing the hash */
346 string const hash = real_j2k + ".md5";
347 ofstream h (hash.c_str());
348 h << md5_digest (_data, _size) << "\n";
352 /** Send this data to a socket.
353 * @param socket Socket
356 EncodedData::send (shared_ptr<Socket> socket)
360 socket->write ((uint8_t *) s.str().c_str(), s.str().length() + 1, 30);
361 socket->write (_data, _size, 30);
364 /** @param s Size of data in bytes */
365 RemotelyEncodedData::RemotelyEncodedData (int s)
366 : EncodedData (new uint8_t[s], s)
371 RemotelyEncodedData::~RemotelyEncodedData ()