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 << "audio_gain " << audio_gain << "\n";
83 f << "audio_delay " << audio_delay << "\n";
84 f << "still_duration " << still_duration << "\n";
85 f << "with_subtitles " << with_subtitles << "\n";
86 f << "subtitle_offset " << subtitle_offset << "\n";
87 f << "subtitle_scale " << subtitle_scale << "\n";
89 /* Cached stuff; this is information about our content; we could
90 look it up each time, but that's slow.
92 for (vector<int>::const_iterator i = thumbs.begin(); i != thumbs.end(); ++i) {
93 f << "thumb " << *i << "\n";
95 f << "width " << size.width << "\n";
96 f << "height " << size.height << "\n";
97 f << "length " << length << "\n";
98 f << "audio_channels " << audio_channels << "\n";
99 f << "audio_sample_rate " << audio_sample_rate << "\n";
100 f << "audio_sample_format " << audio_sample_format_to_string (audio_sample_format) << "\n";
101 f << "content_digest " << content_digest << "\n";
102 f << "has_subtitles " << has_subtitles << "\n";
103 f << "dci_name_prefix " << dci_name_prefix << "\n";
104 f << "audio_language " << audio_language << "\n";
105 f << "subtitle_language " << subtitle_language << "\n";
106 f << "territory " << territory << "\n";
107 f << "rating " << rating << "\n";
108 f << "studio " << studio << "\n";
109 f << "facility " << facility << "\n";
110 f << "package_type " << package_type << "\n";
113 /** Read state from a key / value pair.
118 FilmState::read_metadata (string k, string v)
120 /* User-specified stuff */
123 } else if (k == "use_dci_name") {
124 use_dci_name = (v == "1");
125 } else if (k == "content") {
127 } else if (k == "dcp_content_type") {
128 dcp_content_type = DCPContentType::from_pretty_name (v);
129 } else if (k == "frames_per_second") {
130 frames_per_second = atof (v.c_str ());
131 } else if (k == "format") {
132 format = Format::from_metadata (v);
133 } else if (k == "left_crop") {
134 crop.left = atoi (v.c_str ());
135 } else if (k == "right_crop") {
136 crop.right = atoi (v.c_str ());
137 } else if (k == "top_crop") {
138 crop.top = atoi (v.c_str ());
139 } else if (k == "bottom_crop") {
140 crop.bottom = atoi (v.c_str ());
141 } else if (k == "filter") {
142 filters.push_back (Filter::from_id (v));
143 } else if (k == "scaler") {
144 scaler = Scaler::from_id (v);
145 } else if (k == "dcp_frames") {
146 dcp_frames = atoi (v.c_str ());
147 } else if (k == "dcp_trim_action") {
149 dcp_trim_action = CUT;
150 } else if (v == "black_out") {
151 dcp_trim_action = BLACK_OUT;
153 } else if (k == "dcp_ab") {
155 } else if (k == "audio_gain") {
156 audio_gain = atof (v.c_str ());
157 } else if (k == "audio_delay") {
158 audio_delay = atoi (v.c_str ());
159 } else if (k == "still_duration") {
160 still_duration = atoi (v.c_str ());
161 } else if (k == "with_subtitles") {
162 with_subtitles = (v == "1");
163 } else if (k == "subtitle_offset") {
164 subtitle_offset = atoi (v.c_str ());
165 } else if (k == "subtitle_scale") {
166 subtitle_scale = atof (v.c_str ());
171 int const n = atoi (v.c_str ());
172 /* Only add it to the list if it still exists */
173 if (filesystem::exists (thumb_file_for_frame (n))) {
174 thumbs.push_back (n);
176 } else if (k == "width") {
177 size.width = atoi (v.c_str ());
178 } else if (k == "height") {
179 size.height = atoi (v.c_str ());
180 } else if (k == "length") {
181 length = atof (v.c_str ());
182 } else if (k == "audio_channels") {
183 audio_channels = atoi (v.c_str ());
184 } else if (k == "audio_sample_rate") {
185 audio_sample_rate = atoi (v.c_str ());
186 } else if (k == "audio_sample_format") {
187 audio_sample_format = audio_sample_format_from_string (v);
188 } else if (k == "content_digest") {
190 } else if (k == "has_subtitles") {
191 has_subtitles = (v == "1");
192 } else if (k == "dci_name_prefix") {
194 } else if (k == "audio_language") {
196 } else if (k == "subtitle_language") {
197 subtitle_language = v;
198 } else if (k == "territory") {
200 } else if (k == "rating") {
202 } else if (k == "studio") {
204 } else if (k == "facility") {
206 } else if (k == "package_type") {
212 /** @param n A thumb index.
213 * @return The path to the thumb's image file.
216 FilmState::thumb_file (int n) const
218 return thumb_file_for_frame (thumb_frame (n));
221 /** @param n A frame index within the Film.
222 * @return The path to the thumb's image file for this frame;
223 * we assume that it exists.
226 FilmState::thumb_file_for_frame (int n) const
228 return thumb_base_for_frame(n) + ".png";
232 FilmState::thumb_base (int n) const
234 return thumb_base_for_frame (thumb_frame (n));
238 FilmState::thumb_base_for_frame (int n) const
242 s << setfill('0') << n;
252 /** @param n A thumb index.
253 * @return The frame within the Film that it is for.
256 FilmState::thumb_frame (int n) const
258 assert (n < int (thumbs.size ()));
263 FilmState::cropped_size (Size s) const
265 s.width -= crop.left + crop.right;
266 s.height -= crop.top + crop.bottom;
270 /** Given a directory name, return its full path within the Film's directory.
271 * The directory (and its parents) will be created if they do not exist.
274 FilmState::dir (string d) const
279 filesystem::create_directories (p);
283 /** Given a file or directory name, return its full path within the Film's directory */
285 FilmState::file (string f) const
294 FilmState::content_path () const
296 if (filesystem::path(content).has_root_directory ()) {
300 return file (content);
304 FilmState::content_type () const
306 #if BOOST_FILESYSTEM_VERSION == 3
307 string ext = filesystem::path(content).extension().string();
309 string ext = filesystem::path(content).extension();
312 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
314 if (ext == ".tif" || ext == ".tiff" || ext == ".jpg" || ext == ".jpeg" || ext == ".png") {
321 /** @return Number of bytes per sample of a single channel */
323 FilmState::bytes_per_sample () const
325 switch (audio_sample_format) {
326 case AV_SAMPLE_FMT_S16:
336 FilmState::target_sample_rate () const
338 /* Resample to a DCI-approved sample rate */
339 double t = dcp_audio_sample_rate (audio_sample_rate);
341 /* Compensate for the fact that video will be rounded to the
342 nearest integer number of frames per second.
344 if (rint (frames_per_second) != frames_per_second) {
345 t *= frames_per_second / rint (frames_per_second);
352 FilmState::dcp_length () const
362 FilmState::dci_name () const
365 d << dci_name_prefix << "_";
367 if (dcp_content_type) {
368 d << dcp_content_type->dci_name() << "_";
372 d << format->dci_name() << "_";
375 if (!audio_language.empty ()) {
377 if (!subtitle_language.empty ()) {
378 d << "-" << subtitle_language;
383 if (!territory.empty ()) {
385 if (!rating.empty ()) {
391 switch (audio_channels) {
405 if (!studio.empty ()) {
409 gregorian::date today = gregorian::day_clock::local_day ();
410 d << gregorian::to_iso_extended_string (today) << "_";
412 if (!facility.empty ()) {
413 d << facility << "_";
416 if (!package_type.empty ()) {