2 Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 /** @file src/film_state.cc
21 * @brief The state of a Film. This is separate from Film so that
22 * state can easily be copied and kept around for reference
23 * by long-running jobs. This avoids the jobs getting confused
24 * by the user changing Film settings during their run.
31 #include <boost/filesystem.hpp>
32 #include <boost/date_time.hpp>
33 #include "film_state.h"
37 #include "dcp_content_type.h"
39 #include "exceptions.h"
42 using namespace boost;
44 /** Write state to a stream.
45 * @param f Stream to write to.
48 FilmState::write_metadata (ofstream& f) const
51 f << "name " << name << "\n";
52 f << "use_dci_name " << use_dci_name << "\n";
53 f << "content " << content << "\n";
54 if (dcp_content_type) {
55 f << "dcp_content_type " << dcp_content_type->pretty_name () << "\n";
57 f << "frames_per_second " << frames_per_second << "\n";
59 f << "format " << format->as_metadata () << "\n";
61 f << "left_crop " << crop.left << "\n";
62 f << "right_crop " << crop.right << "\n";
63 f << "top_crop " << crop.top << "\n";
64 f << "bottom_crop " << crop.bottom << "\n";
65 for (vector<Filter const *>::const_iterator i = filters.begin(); i != filters.end(); ++i) {
66 f << "filter " << (*i)->id () << "\n";
68 f << "scaler " << scaler->id () << "\n";
69 f << "dcp_frames " << dcp_frames << "\n";
71 f << "dcp_trim_action ";
72 switch (dcp_trim_action) {
81 f << "dcp_ab " << (dcp_ab ? "1" : "0") << "\n";
82 f << "selected_audio_stream " << audio_stream << "\n";
83 f << "audio_gain " << audio_gain << "\n";
84 f << "audio_delay " << audio_delay << "\n";
85 f << "still_duration " << still_duration << "\n";
86 f << "with_subtitles " << with_subtitles << "\n";
87 f << "subtitle_offset " << subtitle_offset << "\n";
88 f << "subtitle_scale " << subtitle_scale << "\n";
89 f << "audio_language " << audio_language << "\n";
90 f << "subtitle_language " << subtitle_language << "\n";
91 f << "territory " << territory << "\n";
92 f << "rating " << rating << "\n";
93 f << "studio " << studio << "\n";
94 f << "facility " << facility << "\n";
95 f << "package_type " << package_type << "\n";
97 /* Cached stuff; this is information about our content; we could
98 look it up each time, but that's slow.
100 for (vector<int>::const_iterator i = thumbs.begin(); i != thumbs.end(); ++i) {
101 f << "thumb " << *i << "\n";
103 f << "width " << size.width << "\n";
104 f << "height " << size.height << "\n";
105 f << "length " << length << "\n";
106 f << "audio_channels " << audio_channels << "\n";
107 f << "audio_sample_rate " << audio_sample_rate << "\n";
108 f << "audio_sample_format " << audio_sample_format_to_string (audio_sample_format) << "\n";
109 f << "content_digest " << content_digest << "\n";
110 f << "selected_subtitle_stream " << subtitle_stream << "\n";
111 f << "has_subtitles " << has_subtitles << "\n";
113 for (vector<Stream>::const_iterator i = audio_streams.begin(); i != audio_streams.end(); ++i) {
114 f << "audio_stream " << i->to_string () << "\n";
117 for (vector<Stream>::const_iterator i = subtitle_streams.begin(); i != subtitle_streams.end(); ++i) {
118 f << "subtitle_stream " << i->to_string () << "\n";
122 /** Read state from a key / value pair.
127 FilmState::read_metadata (string k, string v)
129 /* User-specified stuff */
132 } else if (k == "use_dci_name") {
133 use_dci_name = (v == "1");
134 } else if (k == "content") {
136 } else if (k == "dcp_content_type") {
137 dcp_content_type = DCPContentType::from_pretty_name (v);
138 } else if (k == "frames_per_second") {
139 frames_per_second = atof (v.c_str ());
140 } else if (k == "format") {
141 format = Format::from_metadata (v);
142 } else if (k == "left_crop") {
143 crop.left = atoi (v.c_str ());
144 } else if (k == "right_crop") {
145 crop.right = atoi (v.c_str ());
146 } else if (k == "top_crop") {
147 crop.top = atoi (v.c_str ());
148 } else if (k == "bottom_crop") {
149 crop.bottom = atoi (v.c_str ());
150 } else if (k == "filter") {
151 filters.push_back (Filter::from_id (v));
152 } else if (k == "scaler") {
153 scaler = Scaler::from_id (v);
154 } else if (k == "dcp_frames") {
155 dcp_frames = atoi (v.c_str ());
156 } else if (k == "dcp_trim_action") {
158 dcp_trim_action = CUT;
159 } else if (v == "black_out") {
160 dcp_trim_action = BLACK_OUT;
162 } else if (k == "dcp_ab") {
164 } else if (k == "selected_audio_stream") {
165 audio_stream = atoi (v.c_str ());
166 } else if (k == "audio_gain") {
167 audio_gain = atof (v.c_str ());
168 } else if (k == "audio_delay") {
169 audio_delay = atoi (v.c_str ());
170 } else if (k == "still_duration") {
171 still_duration = atoi (v.c_str ());
172 } else if (k == "with_subtitles") {
173 with_subtitles = (v == "1");
174 } else if (k == "subtitle_offset") {
175 subtitle_offset = atoi (v.c_str ());
176 } else if (k == "subtitle_scale") {
177 subtitle_scale = atof (v.c_str ());
178 } else if (k == "selected_subtitle_stream") {
179 subtitle_stream = atoi (v.c_str ());
180 } else if (k == "audio_language") {
182 } else if (k == "subtitle_language") {
183 subtitle_language = v;
184 } else if (k == "territory") {
186 } else if (k == "rating") {
188 } else if (k == "studio") {
190 } else if (k == "facility") {
192 } else if (k == "package_type") {
198 int const n = atoi (v.c_str ());
199 /* Only add it to the list if it still exists */
200 if (filesystem::exists (thumb_file_for_frame (n))) {
201 thumbs.push_back (n);
203 } else if (k == "width") {
204 size.width = atoi (v.c_str ());
205 } else if (k == "height") {
206 size.height = atoi (v.c_str ());
207 } else if (k == "length") {
208 length = atof (v.c_str ());
209 } else if (k == "audio_channels") {
210 audio_channels = atoi (v.c_str ());
211 } else if (k == "audio_sample_rate") {
212 audio_sample_rate = atoi (v.c_str ());
213 } else if (k == "audio_sample_format") {
214 audio_sample_format = audio_sample_format_from_string (v);
215 } else if (k == "content_digest") {
217 } else if (k == "has_subtitles") {
218 has_subtitles = (v == "1");
219 } else if (k == "audio_stream") {
220 audio_streams.push_back (Stream (v));
221 } else if (k == "subtitle_stream") {
222 subtitle_streams.push_back (Stream (v));
227 /** @param n A thumb index.
228 * @return The path to the thumb's image file.
231 FilmState::thumb_file (int n) const
233 return thumb_file_for_frame (thumb_frame (n));
236 /** @param n A frame index within the Film.
237 * @return The path to the thumb's image file for this frame;
238 * we assume that it exists.
241 FilmState::thumb_file_for_frame (int n) const
243 return thumb_base_for_frame(n) + ".png";
247 FilmState::thumb_base (int n) const
249 return thumb_base_for_frame (thumb_frame (n));
253 FilmState::thumb_base_for_frame (int n) const
257 s << setfill('0') << n;
267 /** @param n A thumb index.
268 * @return The frame within the Film that it is for.
271 FilmState::thumb_frame (int n) const
273 assert (n < int (thumbs.size ()));
278 FilmState::cropped_size (Size s) const
280 s.width -= crop.left + crop.right;
281 s.height -= crop.top + crop.bottom;
285 /** Given a directory name, return its full path within the Film's directory.
286 * The directory (and its parents) will be created if they do not exist.
289 FilmState::dir (string d) const
294 filesystem::create_directories (p);
298 /** Given a file or directory name, return its full path within the Film's directory */
300 FilmState::file (string f) const
309 FilmState::content_path () const
311 if (filesystem::path(content).has_root_directory ()) {
315 return file (content);
319 FilmState::content_type () const
321 #if BOOST_FILESYSTEM_VERSION == 3
322 string ext = filesystem::path(content).extension().string();
324 string ext = filesystem::path(content).extension();
327 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
329 if (ext == ".tif" || ext == ".tiff" || ext == ".jpg" || ext == ".jpeg" || ext == ".png") {
336 /** @return Number of bytes per sample of a single channel */
338 FilmState::bytes_per_sample () const
340 switch (audio_sample_format) {
341 case AV_SAMPLE_FMT_S16:
351 FilmState::target_sample_rate () const
353 /* Resample to a DCI-approved sample rate */
354 double t = dcp_audio_sample_rate (audio_sample_rate);
356 /* Compensate for the fact that video will be rounded to the
357 nearest integer number of frames per second.
359 if (rint (frames_per_second) != frames_per_second) {
360 t *= frames_per_second / rint (frames_per_second);
367 FilmState::dcp_length () const
376 /** @return a DCI-compliant name for a DCP of this film */
378 FilmState::dci_name () const
382 string fixed_name = to_upper_copy (name);
383 for (size_t i = 0; i < fixed_name.length(); ++i) {
384 if (fixed_name[i] == ' ') {
389 /* Spec is that the name part should be maximum 14 characters, as I understand it */
390 if (fixed_name.length() > 14) {
391 fixed_name = fixed_name.substr (0, 14);
394 d << fixed_name << "_";
396 if (dcp_content_type) {
397 d << dcp_content_type->dci_name() << "_";
401 d << format->dci_name() << "_";
404 if (!audio_language.empty ()) {
406 if (!subtitle_language.empty() && with_subtitles) {
407 d << "-" << subtitle_language;
415 if (!territory.empty ()) {
417 if (!rating.empty ()) {
423 switch (audio_channels) {
437 if (!studio.empty ()) {
441 gregorian::date today = gregorian::day_clock::local_day ();
442 d << gregorian::to_iso_string (today) << "_";
444 if (!facility.empty ()) {
445 d << facility << "_";
448 if (!package_type.empty ()) {
455 /** @return name to give the DCP */
457 FilmState::dcp_name () const