2 Copyright (C) 2013-2016 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
21 #include "video_content.h"
23 #include "video_examiner.h"
24 #include "compose.hpp"
27 #include "colour_conversion.h"
30 #include "exceptions.h"
31 #include "frame_rate_change.h"
33 #include "dcpomatic_log.h"
34 #include <dcp/raw_convert.h>
35 #include <libcxml/cxml.h>
36 #include <libxml++/libxml++.h>
42 int const VideoContentProperty::SIZE = 0;
43 int const VideoContentProperty::FRAME_TYPE = 1;
44 int const VideoContentProperty::CROP = 2;
45 int const VideoContentProperty::SCALE = 3;
46 int const VideoContentProperty::COLOUR_CONVERSION = 4;
47 int const VideoContentProperty::FADE_IN = 5;
48 int const VideoContentProperty::FADE_OUT = 6;
51 using std::setprecision;
57 using std::setprecision;
60 using boost::shared_ptr;
61 using boost::optional;
62 using boost::dynamic_pointer_cast;
63 using dcp::raw_convert;
65 VideoContent::VideoContent (Content* parent)
66 : ContentPart (parent)
68 , _frame_type (VIDEO_FRAME_TYPE_2D)
69 , _scale (VideoContentScale (Ratio::from_id ("178")))
77 shared_ptr<VideoContent>
78 VideoContent::from_xml (Content* parent, cxml::ConstNodePtr node, int version)
80 if (!node->optional_number_child<int> ("VideoWidth")) {
81 return shared_ptr<VideoContent> ();
84 return shared_ptr<VideoContent> (new VideoContent (parent, node, version));
87 VideoContent::VideoContent (Content* parent, cxml::ConstNodePtr node, int version)
88 : ContentPart (parent)
90 _size.width = node->number_child<int> ("VideoWidth");
91 _size.height = node->number_child<int> ("VideoHeight");
93 /* Backwards compatibility */
94 optional<double> r = node->optional_number_child<double>("VideoFrameRate");
96 _parent->set_video_frame_rate (r.get ());
99 _length = node->number_child<Frame> ("VideoLength");
102 /* Snapshot of the VideoFrameType enum at version 34 */
103 switch (node->number_child<int> ("VideoFrameType")) {
105 _frame_type = VIDEO_FRAME_TYPE_2D;
108 _frame_type = VIDEO_FRAME_TYPE_3D_LEFT_RIGHT;
111 _frame_type = VIDEO_FRAME_TYPE_3D_TOP_BOTTOM;
114 _frame_type = VIDEO_FRAME_TYPE_3D_ALTERNATE;
117 _frame_type = VIDEO_FRAME_TYPE_3D_LEFT;
120 _frame_type = VIDEO_FRAME_TYPE_3D_RIGHT;
124 _frame_type = string_to_video_frame_type (node->string_child ("VideoFrameType"));
127 _sample_aspect_ratio = node->optional_number_child<double> ("SampleAspectRatio");
128 _crop.left = node->number_child<int> ("LeftCrop");
129 _crop.right = node->number_child<int> ("RightCrop");
130 _crop.top = node->number_child<int> ("TopCrop");
131 _crop.bottom = node->number_child<int> ("BottomCrop");
134 optional<string> r = node->optional_string_child ("Ratio");
136 _scale = VideoContentScale (Ratio::from_id (r.get ()));
139 _scale = VideoContentScale (node->node_child ("Scale"));
142 if (node->optional_node_child ("ColourConversion")) {
143 _colour_conversion = ColourConversion (node->node_child ("ColourConversion"), version);
146 _yuv = node->optional_bool_child("YUV").get_value_or (true);
149 _fade_in = node->number_child<Frame> ("FadeIn");
150 _fade_out = node->number_child<Frame> ("FadeOut");
152 _fade_in = _fade_out = 0;
156 VideoContent::VideoContent (Content* parent, vector<shared_ptr<Content> > c)
157 : ContentPart (parent)
161 shared_ptr<VideoContent> ref = c[0]->video;
162 DCPOMATIC_ASSERT (ref);
164 for (size_t i = 1; i < c.size(); ++i) {
166 if (c[i]->video->size() != ref->size()) {
167 throw JoinError (_("Content to be joined must have the same picture size."));
170 if (c[i]->video->frame_type() != ref->frame_type()) {
171 throw JoinError (_("Content to be joined must have the same video frame type."));
174 if (c[i]->video->crop() != ref->crop()) {
175 throw JoinError (_("Content to be joined must have the same crop."));
178 if (c[i]->video->scale() != ref->scale()) {
179 throw JoinError (_("Content to be joined must have the same scale setting."));
182 if (c[i]->video->colour_conversion() != ref->colour_conversion()) {
183 throw JoinError (_("Content to be joined must have the same colour conversion."));
186 if (c[i]->video->fade_in() != ref->fade_in() || c[i]->video->fade_out() != ref->fade_out()) {
187 throw JoinError (_("Content to be joined must have the same fades."));
190 _length += c[i]->video->length ();
192 if (c[i]->video->yuv ()) {
197 _size = ref->size ();
198 _frame_type = ref->frame_type ();
199 _crop = ref->crop ();
200 _scale = ref->scale ();
201 _colour_conversion = ref->colour_conversion ();
202 _fade_in = ref->fade_in ();
203 _fade_out = ref->fade_out ();
207 VideoContent::as_xml (xmlpp::Node* node) const
209 boost::mutex::scoped_lock lm (_mutex);
210 node->add_child("VideoLength")->add_child_text (raw_convert<string> (_length));
211 node->add_child("VideoWidth")->add_child_text (raw_convert<string> (_size.width));
212 node->add_child("VideoHeight")->add_child_text (raw_convert<string> (_size.height));
213 node->add_child("VideoFrameType")->add_child_text (video_frame_type_to_string (_frame_type));
214 if (_sample_aspect_ratio) {
215 node->add_child("SampleAspectRatio")->add_child_text (raw_convert<string> (_sample_aspect_ratio.get ()));
218 _scale.as_xml (node->add_child("Scale"));
219 if (_colour_conversion) {
220 _colour_conversion.get().as_xml (node->add_child("ColourConversion"));
222 node->add_child("YUV")->add_child_text (_yuv ? "1" : "0");
223 node->add_child("FadeIn")->add_child_text (raw_convert<string> (_fade_in));
224 node->add_child("FadeOut")->add_child_text (raw_convert<string> (_fade_out));
228 VideoContent::take_from_examiner (shared_ptr<VideoExaminer> d)
230 /* These examiner calls could call other content methods which take a lock on the mutex */
231 dcp::Size const vs = d->video_size ();
232 Frame vl = d->video_length ();
233 optional<double> const ar = d->sample_aspect_ratio ();
234 bool const yuv = d->yuv ();
236 ChangeSignaller<Content> cc1 (_parent, VideoContentProperty::SIZE);
237 ChangeSignaller<Content> cc2 (_parent, VideoContentProperty::SCALE);
238 ChangeSignaller<Content> cc3 (_parent, ContentProperty::LENGTH);
241 boost::mutex::scoped_lock lm (_mutex);
244 _sample_aspect_ratio = ar;
247 if (Config::instance()->default_scale_to ()) {
248 _scale = VideoContentScale (Config::instance()->default_scale_to ());
250 /* Guess correct scale from size and sample aspect ratio */
251 _scale = VideoContentScale (
252 Ratio::nearest_from_ratio (double (_size.width) * ar.get_value_or (1) / _size.height)
257 LOG_GENERAL ("Video length obtained from header as %1 frames", _length);
259 if (d->video_frame_rate()) {
260 _parent->set_video_frame_rate (d->video_frame_rate().get());
264 /** @return string which includes everything about how this content looks */
266 VideoContent::identifier () const
270 buffer, sizeof(buffer), "%d_%d_%d_%d_%s_%" PRId64 "_%" PRId64,
275 scale().id().c_str(),
282 if (colour_conversion()) {
283 s += "_" + colour_conversion().get().identifier ();
290 VideoContent::technical_summary () const
292 string s = String::compose (
293 N_("video: length %1 frames, size %2x%3"),
294 length_after_3d_combine(),
299 if (sample_aspect_ratio ()) {
300 s += String::compose (N_(", sample aspect ratio %1"), (sample_aspect_ratio().get ()));
307 VideoContent::size_after_3d_split () const
309 dcp::Size const s = size ();
310 switch (frame_type ()) {
311 case VIDEO_FRAME_TYPE_2D:
312 case VIDEO_FRAME_TYPE_3D:
313 case VIDEO_FRAME_TYPE_3D_ALTERNATE:
314 case VIDEO_FRAME_TYPE_3D_LEFT:
315 case VIDEO_FRAME_TYPE_3D_RIGHT:
317 case VIDEO_FRAME_TYPE_3D_LEFT_RIGHT:
318 return dcp::Size (s.width / 2, s.height);
319 case VIDEO_FRAME_TYPE_3D_TOP_BOTTOM:
320 return dcp::Size (s.width, s.height / 2);
323 DCPOMATIC_ASSERT (false);
326 /** @return Video size after 3D split and crop */
328 VideoContent::size_after_crop () const
330 return crop().apply (size_after_3d_split ());
334 VideoContent::scale_and_crop_to_fit_width (shared_ptr<const Film> film)
336 set_scale (VideoContentScale(film->container()));
338 int const crop = max (0, int (size().height - double (film->frame_size().height) * size().width / film->frame_size().width));
341 set_top_crop (crop / 2);
342 set_bottom_crop (crop / 2);
346 VideoContent::scale_and_crop_to_fit_height (shared_ptr<const Film> film)
348 set_scale (VideoContentScale(film->container()));
350 int const crop = max (0, int (size().width - double (film->frame_size().width) * size().height / film->frame_size().height));
351 set_left_crop (crop / 2);
352 set_right_crop (crop / 2);
357 /** @param f Frame index within the whole (untrimmed) content.
358 * @return Fade factor (between 0 and 1) or unset if there is no fade.
361 VideoContent::fade (shared_ptr<const Film> film, Frame f) const
363 DCPOMATIC_ASSERT (f >= 0);
365 double const vfr = _parent->active_video_frame_rate(film);
367 Frame const ts = _parent->trim_start().frames_round(vfr);
368 if ((f - ts) < fade_in()) {
369 return double (f - ts) / fade_in();
372 Frame fade_out_start = length() - _parent->trim_end().frames_round(vfr) - fade_out();
373 if (f >= fade_out_start) {
374 return 1 - double (f - fade_out_start) / fade_out();
377 return optional<double> ();
381 VideoContent::processing_description (shared_ptr<const Film> film) const
386 if (size().width && size().height) {
387 d += String::compose (
388 _("Content video is %1x%2"),
389 size_after_3d_split().width,
390 size_after_3d_split().height
394 double ratio = size_after_3d_split().ratio ();
396 if (sample_aspect_ratio ()) {
397 snprintf (buffer, sizeof(buffer), _(", pixel aspect ratio %.2f:1"), sample_aspect_ratio().get());
399 ratio *= sample_aspect_ratio().get ();
402 snprintf (buffer, sizeof(buffer), _("\nDisplay aspect ratio %.2f:1"), ratio);
406 if ((crop().left || crop().right || crop().top || crop().bottom) && size() != dcp::Size (0, 0)) {
407 dcp::Size cropped = size_after_crop ();
408 d += String::compose (
409 _("\nCropped to %1x%2"),
410 cropped.width, cropped.height
413 snprintf (buffer, sizeof(buffer), " (%.2f:1)", cropped.ratio());
417 dcp::Size const container_size = film->frame_size ();
418 dcp::Size const scaled = scale().size (shared_from_this(), container_size, container_size);
420 if (scaled != size_after_crop ()) {
421 d += String::compose (
422 _("\nScaled to %1x%2"),
423 scaled.width, scaled.height
426 snprintf (buffer, sizeof(buffer), _(" (%.2f:1)"), scaled.ratio());
430 if (scaled != container_size) {
431 d += String::compose (
432 _("\nPadded with black to fit container %1 (%2x%3)"),
433 film->container()->container_nickname (),
434 container_size.width, container_size.height
437 snprintf (buffer, sizeof(buffer), _(" (%.2f:1)"), container_size.ratio());
441 if (_parent->video_frame_rate()) {
442 double const vfr = _parent->video_frame_rate().get ();
444 snprintf (buffer, sizeof(buffer), _("\nContent frame rate %.4f\n"), vfr);
447 FrameRateChange frc (vfr, film->video_frame_rate ());
448 d += frc.description ();
455 VideoContent::add_properties (list<UserProperty>& p) const
457 p.push_back (UserProperty (UserProperty::VIDEO, _("Length"), length (), _("video frames")));
458 p.push_back (UserProperty (UserProperty::VIDEO, _("Size"), String::compose ("%1x%2", size().width, size().height)));
462 VideoContent::set_length (Frame len)
464 maybe_set (_length, len, ContentProperty::LENGTH);
468 VideoContent::set_left_crop (int c)
470 maybe_set (_crop.left, c, VideoContentProperty::CROP);
474 VideoContent::set_right_crop (int c)
476 maybe_set (_crop.right, c, VideoContentProperty::CROP);
480 VideoContent::set_top_crop (int c)
482 maybe_set (_crop.top, c, VideoContentProperty::CROP);
486 VideoContent::set_bottom_crop (int c)
488 maybe_set (_crop.bottom, c, VideoContentProperty::CROP);
492 VideoContent::set_scale (VideoContentScale s)
494 maybe_set (_scale, s, VideoContentProperty::SCALE);
498 VideoContent::set_frame_type (VideoFrameType t)
500 maybe_set (_frame_type, t, VideoContentProperty::FRAME_TYPE);
504 VideoContent::unset_colour_conversion ()
506 maybe_set (_colour_conversion, boost::optional<ColourConversion> (), VideoContentProperty::COLOUR_CONVERSION);
510 VideoContent::set_colour_conversion (ColourConversion c)
512 maybe_set (_colour_conversion, c, VideoContentProperty::COLOUR_CONVERSION);
516 VideoContent::set_fade_in (Frame t)
518 maybe_set (_fade_in, t, VideoContentProperty::FADE_IN);
522 VideoContent::set_fade_out (Frame t)
524 maybe_set (_fade_out, t, VideoContentProperty::FADE_OUT);
528 VideoContent::take_settings_from (shared_ptr<const VideoContent> c)
530 if (c->_colour_conversion) {
531 set_colour_conversion (c->_colour_conversion.get());
533 unset_colour_conversion ();
535 set_frame_type (c->_frame_type);
536 set_left_crop (c->_crop.left);
537 set_right_crop (c->_crop.right);
538 set_top_crop (c->_crop.top);
539 set_bottom_crop (c->_crop.bottom);
540 set_scale (c->_scale);
541 set_fade_in (c->_fade_in);
542 set_fade_out (c->_fade_out);
546 VideoContent::modify_position (shared_ptr<const Film> film, DCPTime& pos) const
548 pos = pos.round (film->video_frame_rate());
552 VideoContent::modify_trim_start (ContentTime& trim) const
554 if (_parent->video_frame_rate()) {
555 trim = trim.round (_parent->video_frame_rate().get());