2 Copyright (C) 2013-2016 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 #include "video_content.h"
22 #include "video_examiner.h"
23 #include "compose.hpp"
26 #include "colour_conversion.h"
29 #include "exceptions.h"
30 #include "frame_rate_change.h"
32 #include "safe_stringstream.h"
33 #include "raw_convert.h"
34 #include <libcxml/cxml.h>
35 #include <dcp/colour_matrix.h>
36 #include <libxml++/libxml++.h>
42 #define LOG_GENERAL(...) film->log()->log (String::compose (__VA_ARGS__), LogEntry::TYPE_GENERAL);
44 int const VideoContentProperty::SIZE = 0;
45 int const VideoContentProperty::FRAME_RATE = 1;
46 int const VideoContentProperty::FRAME_TYPE = 2;
47 int const VideoContentProperty::CROP = 3;
48 int const VideoContentProperty::SCALE = 4;
49 int const VideoContentProperty::COLOUR_CONVERSION = 5;
50 int const VideoContentProperty::FADE_IN = 6;
51 int const VideoContentProperty::FADE_OUT = 7;
54 using std::setprecision;
60 using std::setprecision;
63 using boost::shared_ptr;
64 using boost::optional;
65 using boost::dynamic_pointer_cast;
67 VideoContent::VideoContent (Content* parent, shared_ptr<const Film> film)
68 : ContentPart (parent, film)
70 , _frame_type (VIDEO_FRAME_TYPE_2D)
71 , _scale (VideoContentScale (Ratio::from_id ("178")))
79 VideoContent::VideoContent (Content* parent, shared_ptr<const Film> film, cxml::ConstNodePtr node, int version)
80 : ContentPart (parent, film)
82 _size.width = node->number_child<int> ("VideoWidth");
83 _size.height = node->number_child<int> ("VideoHeight");
84 _frame_rate = node->optional_number_child<double> ("VideoFrameRate");
85 _length = node->number_child<Frame> ("VideoLength");
86 _frame_type = static_cast<VideoFrameType> (node->number_child<int> ("VideoFrameType"));
87 _sample_aspect_ratio = node->optional_number_child<double> ("SampleAspectRatio");
88 _crop.left = node->number_child<int> ("LeftCrop");
89 _crop.right = node->number_child<int> ("RightCrop");
90 _crop.top = node->number_child<int> ("TopCrop");
91 _crop.bottom = node->number_child<int> ("BottomCrop");
94 optional<string> r = node->optional_string_child ("Ratio");
96 _scale = VideoContentScale (Ratio::from_id (r.get ()));
99 _scale = VideoContentScale (node->node_child ("Scale"));
103 if (node->optional_node_child ("ColourConversion")) {
104 _colour_conversion = ColourConversion (node->node_child ("ColourConversion"), version);
107 _yuv = node->optional_bool_child("YUV").get_value_or (true);
110 _fade_in = node->number_child<Frame> ("FadeIn");
111 _fade_out = node->number_child<Frame> ("FadeOut");
113 _fade_in = _fade_out = 0;
117 VideoContent::VideoContent (Content* parent, shared_ptr<const Film> film, vector<shared_ptr<Content> > c)
118 : ContentPart (parent, film)
122 shared_ptr<VideoContent> ref = c[0]->video;
123 DCPOMATIC_ASSERT (ref);
125 for (size_t i = 1; i < c.size(); ++i) {
127 if (c[i]->video->size() != ref->size()) {
128 throw JoinError (_("Content to be joined must have the same picture size."));
131 if (c[i]->video->frame_rate() != ref->frame_rate()) {
132 throw JoinError (_("Content to be joined must have the same video frame rate."));
135 if (c[i]->video->frame_type() != ref->frame_type()) {
136 throw JoinError (_("Content to be joined must have the same video frame type."));
139 if (c[i]->video->crop() != ref->crop()) {
140 throw JoinError (_("Content to be joined must have the same crop."));
143 if (c[i]->video->scale() != ref->scale()) {
144 throw JoinError (_("Content to be joined must have the same scale setting."));
147 if (c[i]->video->colour_conversion() != ref->colour_conversion()) {
148 throw JoinError (_("Content to be joined must have the same colour conversion."));
151 if (c[i]->video->fade_in() != ref->fade_in() || c[i]->video->fade_out() != ref->fade_out()) {
152 throw JoinError (_("Content to be joined must have the same fades."));
155 _length += c[i]->video->length ();
157 if (c[i]->video->yuv ()) {
162 _size = ref->size ();
163 _frame_rate = ref->frame_rate ();
164 _frame_type = ref->frame_type ();
165 _crop = ref->crop ();
166 _scale = ref->scale ();
167 _colour_conversion = ref->colour_conversion ();
168 _fade_in = ref->fade_in ();
169 _fade_out = ref->fade_out ();
173 VideoContent::as_xml (xmlpp::Node* node) const
175 boost::mutex::scoped_lock lm (_mutex);
176 node->add_child("VideoLength")->add_child_text (raw_convert<string> (_length));
177 node->add_child("VideoWidth")->add_child_text (raw_convert<string> (_size.width));
178 node->add_child("VideoHeight")->add_child_text (raw_convert<string> (_size.height));
180 node->add_child("VideoFrameRate")->add_child_text (raw_convert<string> (_frame_rate.get()));
182 node->add_child("VideoFrameType")->add_child_text (raw_convert<string> (static_cast<int> (_frame_type)));
183 if (_sample_aspect_ratio) {
184 node->add_child("SampleAspectRatio")->add_child_text (raw_convert<string> (_sample_aspect_ratio.get ()));
187 _scale.as_xml (node->add_child("Scale"));
188 if (_colour_conversion) {
189 _colour_conversion.get().as_xml (node->add_child("ColourConversion"));
191 node->add_child("YUV")->add_child_text (_yuv ? "1" : "0");
192 node->add_child("FadeIn")->add_child_text (raw_convert<string> (_fade_in));
193 node->add_child("FadeOut")->add_child_text (raw_convert<string> (_fade_out));
197 VideoContent::take_from_examiner (shared_ptr<VideoExaminer> d)
199 /* These examiner calls could call other content methods which take a lock on the mutex */
200 dcp::Size const vs = d->video_size ();
201 optional<double> const vfr = d->video_frame_rate ();
202 Frame vl = d->video_length ();
203 optional<double> const ar = d->sample_aspect_ratio ();
204 bool const yuv = d->yuv ();
207 boost::mutex::scoped_lock lm (_mutex);
211 _sample_aspect_ratio = ar;
214 /* Guess correct scale from size and sample aspect ratio */
215 _scale = VideoContentScale (
216 Ratio::nearest_from_ratio (double (_size.width) * ar.get_value_or (1) / _size.height)
220 shared_ptr<const Film> film = _film.lock ();
221 DCPOMATIC_ASSERT (film);
222 LOG_GENERAL ("Video length obtained from header as %1 frames", _length);
224 _parent->signal_changed (VideoContentProperty::SIZE);
225 _parent->signal_changed (VideoContentProperty::FRAME_RATE);
226 _parent->signal_changed (VideoContentProperty::SCALE);
227 _parent->signal_changed (ContentProperty::LENGTH);
230 /** @return string which includes everything about how this content looks */
232 VideoContent::identifier () const
236 << "_" << crop().right
238 << "_" << crop().bottom
239 << "_" << scale().id()
243 if (colour_conversion()) {
244 s << "_" << colour_conversion().get().identifier ();
251 VideoContent::technical_summary () const
253 string s = String::compose (
254 N_("video: length %1 frames, size %2x%3, rate %4"),
255 length_after_3d_combine(),
261 if (sample_aspect_ratio ()) {
262 s += String::compose (N_(", sample aspect ratio %1"), (sample_aspect_ratio().get ()));
269 VideoContent::size_after_3d_split () const
271 dcp::Size const s = size ();
272 switch (frame_type ()) {
273 case VIDEO_FRAME_TYPE_2D:
274 case VIDEO_FRAME_TYPE_3D_ALTERNATE:
275 case VIDEO_FRAME_TYPE_3D_LEFT:
276 case VIDEO_FRAME_TYPE_3D_RIGHT:
278 case VIDEO_FRAME_TYPE_3D_LEFT_RIGHT:
279 return dcp::Size (s.width / 2, s.height);
280 case VIDEO_FRAME_TYPE_3D_TOP_BOTTOM:
281 return dcp::Size (s.width, s.height / 2);
284 DCPOMATIC_ASSERT (false);
287 /** @return Video size after 3D split and crop */
289 VideoContent::size_after_crop () const
291 return crop().apply (size_after_3d_split ());
295 VideoContent::scale_and_crop_to_fit_width ()
297 shared_ptr<const Film> film = _film.lock ();
298 DCPOMATIC_ASSERT (film);
299 set_scale (VideoContentScale (film->container ()));
301 int const crop = max (0, int (size().height - double (film->frame_size().height) * size().width / film->frame_size().width));
304 set_top_crop (crop / 2);
305 set_bottom_crop (crop / 2);
309 VideoContent::scale_and_crop_to_fit_height ()
311 shared_ptr<const Film> film = _film.lock ();
312 DCPOMATIC_ASSERT (film);
313 set_scale (VideoContentScale (film->container ()));
315 int const crop = max (0, int (size().width - double (film->frame_size().width) * size().height / film->frame_size().height));
316 set_left_crop (crop / 2);
317 set_right_crop (crop / 2);
322 /** @param f Frame index within the whole (untrimmed) content */
324 VideoContent::fade (Frame f) const
326 DCPOMATIC_ASSERT (f >= 0);
328 Frame const ts = _parent->trim_start().frames_round(frame_rate());
329 if ((f - ts) < fade_in()) {
330 return double (f - ts) / fade_in();
333 Frame fade_out_start = length() - _parent->trim_end().frames_round(frame_rate()) - fade_out();
334 if (f >= fade_out_start) {
335 return 1 - double (f - fade_out_start) / fade_out();
338 return optional<double> ();
342 VideoContent::processing_description () const
344 /* stringstream is OK here as this string is just for presentation to the user */
347 if (size().width && size().height) {
348 d << String::compose (
349 _("Content video is %1x%2"),
350 size_after_3d_split().width,
351 size_after_3d_split().height
355 double ratio = size_after_3d_split().ratio ();
357 if (sample_aspect_ratio ()) {
358 d << ", " << _("pixel aspect ratio") << " " << fixed << setprecision(2) << sample_aspect_ratio().get () << ":1";
359 ratio *= sample_aspect_ratio().get ();
362 d << "\n" << _("Display aspect ratio") << " " << fixed << setprecision(2) << ratio << ":1\n";
365 if ((crop().left || crop().right || crop().top || crop().bottom) && size() != dcp::Size (0, 0)) {
366 dcp::Size cropped = size_after_crop ();
367 d << String::compose (
368 _("Cropped to %1x%2"),
369 cropped.width, cropped.height
372 d << " (" << fixed << setprecision(2) << cropped.ratio () << ":1)\n";
375 shared_ptr<const Film> film = _film.lock ();
376 DCPOMATIC_ASSERT (film);
377 dcp::Size const container_size = film->frame_size ();
378 dcp::Size const scaled = scale().size (shared_from_this(), container_size, container_size);
380 if (scaled != size_after_crop ()) {
381 d << String::compose (
382 _("Scaled to %1x%2"),
383 scaled.width, scaled.height
386 d << " (" << fixed << setprecision(2) << scaled.ratio() << ":1)\n";
389 if (scaled != container_size) {
390 d << String::compose (
391 _("Padded with black to fit container %1 (%2x%3)"),
392 film->container()->nickname (),
393 container_size.width, container_size.height
396 d << " (" << fixed << setprecision(2) << container_size.ratio () << ":1)\n";
399 d << _("Content frame rate");
400 d << " " << fixed << setprecision(4) << frame_rate() << "\n";
402 FrameRateChange frc (frame_rate(), film->video_frame_rate ());
403 d << frc.description () << "\n";
409 VideoContent::add_properties (list<UserProperty>& p) const
411 p.push_back (UserProperty (_("Video"), _("Length"), raw_convert<string> (length ()), _("video frames")));
412 p.push_back (UserProperty (_("Video"), _("Size"), raw_convert<string> (size().width) + "x" + raw_convert<string> (size().height)));
413 p.push_back (UserProperty (_("Video"), _("Frame rate"), raw_convert<string> (frame_rate(), 5), _("frames per second")));
417 VideoContent::frame_rate () const
419 boost::mutex::scoped_lock lm (_mutex);
420 shared_ptr<const Film> film = _film.lock ();
421 DCPOMATIC_ASSERT (film);
422 return _frame_rate.get_value_or (film->video_frame_rate ());
426 VideoContent::set_length (Frame len)
428 maybe_set (_length, len, ContentProperty::LENGTH);
432 VideoContent::set_left_crop (int c)
434 maybe_set (_crop.left, c, VideoContentProperty::CROP);
438 VideoContent::set_right_crop (int c)
440 maybe_set (_crop.right, c, VideoContentProperty::CROP);
444 VideoContent::set_top_crop (int c)
446 maybe_set (_crop.top, c, VideoContentProperty::CROP);
450 VideoContent::set_bottom_crop (int c)
452 maybe_set (_crop.bottom, c, VideoContentProperty::CROP);
456 VideoContent::set_scale (VideoContentScale s)
458 maybe_set (_scale, s, VideoContentProperty::SCALE);
462 VideoContent::set_frame_rate (double r)
464 maybe_set (_frame_rate, r, VideoContentProperty::FRAME_RATE);
468 VideoContent::set_frame_type (VideoFrameType t)
470 maybe_set (_frame_type, t, VideoContentProperty::FRAME_TYPE);
474 VideoContent::unset_colour_conversion ()
476 maybe_set (_colour_conversion, boost::optional<ColourConversion> (), VideoContentProperty::COLOUR_CONVERSION);
480 VideoContent::set_colour_conversion (ColourConversion c)
482 maybe_set (_colour_conversion, c, VideoContentProperty::COLOUR_CONVERSION);
486 VideoContent::set_fade_in (Frame t)
488 maybe_set (_fade_in, t, VideoContentProperty::FADE_IN);
492 VideoContent::set_fade_out (Frame t)
494 maybe_set (_fade_out, t, VideoContentProperty::FADE_OUT);