2 Copyright (C) 2013-2015 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"
21 #include "video_examiner.h"
22 #include "compose.hpp"
25 #include "colour_conversion.h"
28 #include "exceptions.h"
29 #include "frame_rate_change.h"
31 #include "safe_stringstream.h"
32 #include "raw_convert.h"
33 #include <libcxml/cxml.h>
34 #include <dcp/colour_matrix.h>
39 #define LOG_GENERAL(...) film->log()->log (String::compose (__VA_ARGS__), Log::TYPE_GENERAL);
41 int const VideoContentProperty::VIDEO_SIZE = 0;
42 int const VideoContentProperty::VIDEO_FRAME_RATE = 1;
43 int const VideoContentProperty::VIDEO_FRAME_TYPE = 2;
44 int const VideoContentProperty::VIDEO_CROP = 3;
45 int const VideoContentProperty::VIDEO_SCALE = 4;
46 int const VideoContentProperty::COLOUR_CONVERSION = 5;
47 int const VideoContentProperty::VIDEO_FADE_IN = 6;
48 int const VideoContentProperty::VIDEO_FADE_OUT = 7;
51 using std::setprecision;
56 using std::stringstream;
58 using std::setprecision;
59 using boost::shared_ptr;
60 using boost::optional;
61 using boost::dynamic_pointer_cast;
63 VideoContent::VideoContent (shared_ptr<const Film> f)
66 , _video_frame_rate (0)
67 , _video_frame_type (VIDEO_FRAME_TYPE_2D)
68 , _scale (VideoContentScale (Ratio::from_id ("178")))
70 set_default_colour_conversion ();
73 VideoContent::VideoContent (shared_ptr<const Film> f, DCPTime s, Frame len)
76 , _video_frame_rate (0)
77 , _video_frame_type (VIDEO_FRAME_TYPE_2D)
78 , _scale (VideoContentScale (Ratio::from_id ("178")))
80 set_default_colour_conversion ();
83 VideoContent::VideoContent (shared_ptr<const Film> f, boost::filesystem::path p)
86 , _video_frame_rate (0)
87 , _video_frame_type (VIDEO_FRAME_TYPE_2D)
88 , _scale (VideoContentScale (Ratio::from_id ("178")))
90 set_default_colour_conversion ();
93 VideoContent::VideoContent (shared_ptr<const Film> f, cxml::ConstNodePtr node, int version)
96 _video_size.width = node->number_child<int> ("VideoWidth");
97 _video_size.height = node->number_child<int> ("VideoHeight");
98 _video_frame_rate = node->number_child<float> ("VideoFrameRate");
99 _video_length = node->number_child<Frame> ("VideoLength");
100 _video_frame_type = static_cast<VideoFrameType> (node->number_child<int> ("VideoFrameType"));
101 _sample_aspect_ratio = node->optional_number_child<float> ("SampleAspectRatio");
102 _crop.left = node->number_child<int> ("LeftCrop");
103 _crop.right = node->number_child<int> ("RightCrop");
104 _crop.top = node->number_child<int> ("TopCrop");
105 _crop.bottom = node->number_child<int> ("BottomCrop");
108 optional<string> r = node->optional_string_child ("Ratio");
110 _scale = VideoContentScale (Ratio::from_id (r.get ()));
113 _scale = VideoContentScale (node->node_child ("Scale"));
117 if (node->optional_node_child ("ColourConversion")) {
118 _colour_conversion = ColourConversion (node->node_child ("ColourConversion"), version);
121 _fade_in = node->number_child<Frame> ("FadeIn");
122 _fade_out = node->number_child<Frame> ("FadeOut");
126 VideoContent::VideoContent (shared_ptr<const Film> f, vector<shared_ptr<Content> > c)
130 shared_ptr<VideoContent> ref = dynamic_pointer_cast<VideoContent> (c[0]);
131 DCPOMATIC_ASSERT (ref);
133 for (size_t i = 0; i < c.size(); ++i) {
134 shared_ptr<VideoContent> vc = dynamic_pointer_cast<VideoContent> (c[i]);
136 if (vc->video_size() != ref->video_size()) {
137 throw JoinError (_("Content to be joined must have the same picture size."));
140 if (vc->video_frame_rate() != ref->video_frame_rate()) {
141 throw JoinError (_("Content to be joined must have the same video frame rate."));
144 if (vc->video_frame_type() != ref->video_frame_type()) {
145 throw JoinError (_("Content to be joined must have the same video frame type."));
148 if (vc->crop() != ref->crop()) {
149 throw JoinError (_("Content to be joined must have the same crop."));
152 if (vc->scale() != ref->scale()) {
153 throw JoinError (_("Content to be joined must have the same scale setting."));
156 if (vc->colour_conversion() != ref->colour_conversion()) {
157 throw JoinError (_("Content to be joined must have the same colour conversion."));
160 if (vc->fade_in() != ref->fade_in() || vc->fade_out() != ref->fade_out()) {
161 throw JoinError (_("Content to be joined must have the same fades."));
164 _video_length += vc->video_length ();
167 _video_size = ref->video_size ();
168 _video_frame_rate = ref->video_frame_rate ();
169 _video_frame_type = ref->video_frame_type ();
170 _crop = ref->crop ();
171 _scale = ref->scale ();
172 _colour_conversion = ref->colour_conversion ();
173 _fade_in = ref->fade_in ();
174 _fade_out = ref->fade_out ();
178 VideoContent::as_xml (xmlpp::Node* node) const
180 boost::mutex::scoped_lock lm (_mutex);
181 node->add_child("VideoLength")->add_child_text (raw_convert<string> (_video_length));
182 node->add_child("VideoWidth")->add_child_text (raw_convert<string> (_video_size.width));
183 node->add_child("VideoHeight")->add_child_text (raw_convert<string> (_video_size.height));
184 node->add_child("VideoFrameRate")->add_child_text (raw_convert<string> (_video_frame_rate));
185 node->add_child("VideoFrameType")->add_child_text (raw_convert<string> (static_cast<int> (_video_frame_type)));
186 if (_sample_aspect_ratio) {
187 node->add_child("SampleAspectRatio")->add_child_text (raw_convert<string> (_sample_aspect_ratio.get ()));
190 _scale.as_xml (node->add_child("Scale"));
191 if (_colour_conversion) {
192 _colour_conversion.get().as_xml (node->add_child("ColourConversion"));
194 node->add_child("FadeIn")->add_child_text (raw_convert<string> (_fade_in));
195 node->add_child("FadeOut")->add_child_text (raw_convert<string> (_fade_out));
199 VideoContent::set_default_colour_conversion ()
201 /* If there's no better offer we'll use Rec. 709 */
202 boost::mutex::scoped_lock lm (_mutex);
203 _colour_conversion = PresetColourConversion::from_id ("rec709").conversion;
207 VideoContent::take_from_video_examiner (shared_ptr<VideoExaminer> d)
209 /* These examiner calls could call other content methods which take a lock on the mutex */
210 dcp::Size const vs = d->video_size ();
211 optional<float> const vfr = d->video_frame_rate ();
212 Frame vl = d->video_length ();
213 optional<float> const ar = d->sample_aspect_ratio ();
216 boost::mutex::scoped_lock lm (_mutex);
218 /* Default video frame rate to 24fps if the examiner doesn't know */
219 _video_frame_rate = vfr.get_value_or (24);
221 _sample_aspect_ratio = ar;
223 /* Guess correct scale from size and sample aspect ratio */
224 _scale = VideoContentScale (
225 Ratio::nearest_from_ratio (float (_video_size.width) * ar.get_value_or (1) / _video_size.height)
229 shared_ptr<const Film> film = _film.lock ();
230 DCPOMATIC_ASSERT (film);
231 LOG_GENERAL ("Video length obtained from header as %1 frames", _video_length);
233 set_default_colour_conversion ();
235 signal_changed (VideoContentProperty::VIDEO_SIZE);
236 signal_changed (VideoContentProperty::VIDEO_FRAME_RATE);
237 signal_changed (VideoContentProperty::VIDEO_SCALE);
238 signal_changed (ContentProperty::LENGTH);
242 VideoContent::set_left_crop (int c)
245 boost::mutex::scoped_lock lm (_mutex);
247 if (_crop.left == c) {
254 signal_changed (VideoContentProperty::VIDEO_CROP);
258 VideoContent::set_right_crop (int c)
261 boost::mutex::scoped_lock lm (_mutex);
262 if (_crop.right == c) {
269 signal_changed (VideoContentProperty::VIDEO_CROP);
273 VideoContent::set_top_crop (int c)
276 boost::mutex::scoped_lock lm (_mutex);
277 if (_crop.top == c) {
284 signal_changed (VideoContentProperty::VIDEO_CROP);
288 VideoContent::set_bottom_crop (int c)
291 boost::mutex::scoped_lock lm (_mutex);
292 if (_crop.bottom == c) {
299 signal_changed (VideoContentProperty::VIDEO_CROP);
303 VideoContent::set_scale (VideoContentScale s)
306 boost::mutex::scoped_lock lm (_mutex);
314 signal_changed (VideoContentProperty::VIDEO_SCALE);
317 /** @return string which includes everything about how this content looks */
319 VideoContent::identifier () const
322 s << Content::identifier()
323 << "_" << crop().left
324 << "_" << crop().right
326 << "_" << crop().bottom
327 << "_" << scale().id();
329 if (colour_conversion()) {
330 s << "_" << colour_conversion().get().identifier ();
337 VideoContent::set_video_frame_type (VideoFrameType t)
340 boost::mutex::scoped_lock lm (_mutex);
341 _video_frame_type = t;
344 signal_changed (VideoContentProperty::VIDEO_FRAME_TYPE);
348 VideoContent::technical_summary () const
350 string s = String::compose (
351 N_("video: length %1 frames, size %2x%3, rate %4"),
352 video_length_after_3d_combine(),
358 if (sample_aspect_ratio ()) {
359 s += String::compose (N_(", sample aspect ratio %1"), (sample_aspect_ratio().get ()));
366 VideoContent::video_size_after_3d_split () const
368 dcp::Size const s = video_size ();
369 switch (video_frame_type ()) {
370 case VIDEO_FRAME_TYPE_2D:
371 case VIDEO_FRAME_TYPE_3D_ALTERNATE:
372 case VIDEO_FRAME_TYPE_3D_LEFT:
373 case VIDEO_FRAME_TYPE_3D_RIGHT:
375 case VIDEO_FRAME_TYPE_3D_LEFT_RIGHT:
376 return dcp::Size (s.width / 2, s.height);
377 case VIDEO_FRAME_TYPE_3D_TOP_BOTTOM:
378 return dcp::Size (s.width, s.height / 2);
381 DCPOMATIC_ASSERT (false);
385 VideoContent::unset_colour_conversion (bool signal)
388 boost::mutex::scoped_lock lm (_mutex);
389 _colour_conversion = boost::optional<ColourConversion> ();
393 signal_changed (VideoContentProperty::COLOUR_CONVERSION);
398 VideoContent::set_colour_conversion (ColourConversion c)
401 boost::mutex::scoped_lock lm (_mutex);
402 _colour_conversion = c;
405 signal_changed (VideoContentProperty::COLOUR_CONVERSION);
409 VideoContent::set_fade_in (Frame t)
412 boost::mutex::scoped_lock lm (_mutex);
416 signal_changed (VideoContentProperty::VIDEO_FADE_IN);
420 VideoContent::set_fade_out (Frame t)
423 boost::mutex::scoped_lock lm (_mutex);
427 signal_changed (VideoContentProperty::VIDEO_FADE_OUT);
430 /** @return Video size after 3D split and crop */
432 VideoContent::video_size_after_crop () const
434 return crop().apply (video_size_after_3d_split ());
438 VideoContent::scale_and_crop_to_fit_width ()
440 shared_ptr<const Film> film = _film.lock ();
441 DCPOMATIC_ASSERT (film);
443 set_scale (VideoContentScale (film->container ()));
445 int const crop = max (0, int (video_size().height - double (film->frame_size().height) * video_size().width / film->frame_size().width));
446 set_top_crop (crop / 2);
447 set_bottom_crop (crop / 2);
451 VideoContent::scale_and_crop_to_fit_height ()
453 shared_ptr<const Film> film = _film.lock ();
454 DCPOMATIC_ASSERT (film);
456 set_scale (VideoContentScale (film->container ()));
458 int const crop = max (0, int (video_size().width - double (film->frame_size().width) * video_size().height / film->frame_size().height));
459 set_left_crop (crop / 2);
460 set_right_crop (crop / 2);
464 VideoContent::set_video_frame_rate (float r)
467 boost::mutex::scoped_lock lm (_mutex);
468 if (_video_frame_rate == r) {
472 _video_frame_rate = r;
475 signal_changed (VideoContentProperty::VIDEO_FRAME_RATE);
479 VideoContent::fade (Frame f) const
481 DCPOMATIC_ASSERT (f >= 0);
484 return float (f) / fade_in();
487 Frame fade_out_start = video_length() - fade_out();
488 if (f >= fade_out_start) {
489 return 1 - float (f - fade_out_start) / fade_out();
492 return optional<float> ();
496 VideoContent::processing_description () const
498 /* stringstream is OK here as this string is just for presentation to the user */
501 if (video_size().width && video_size().height) {
502 d << String::compose (
503 _("Content video is %1x%2"),
504 video_size_after_3d_split().width,
505 video_size_after_3d_split().height
509 float ratio = video_size_after_3d_split().ratio ();
511 if (sample_aspect_ratio ()) {
512 d << ", " << _("pixel aspect ratio") << " " << fixed << setprecision(2) << sample_aspect_ratio().get () << ":1";
513 ratio *= sample_aspect_ratio().get ();
516 d << "\n" << _("Display aspect ratio") << " " << fixed << setprecision(2) << ratio << ":1\n";
519 if ((crop().left || crop().right || crop().top || crop().bottom) && video_size() != dcp::Size (0, 0)) {
520 dcp::Size cropped = video_size_after_crop ();
521 d << String::compose (
522 _("Cropped to %1x%2"),
523 cropped.width, cropped.height
526 d << " (" << fixed << setprecision(2) << cropped.ratio () << ":1)\n";
529 shared_ptr<const Film> film = _film.lock ();
530 DCPOMATIC_ASSERT (film);
532 dcp::Size const container_size = film->frame_size ();
533 dcp::Size const scaled = scale().size (dynamic_pointer_cast<const VideoContent> (shared_from_this ()), container_size, container_size);
535 if (scaled != video_size_after_crop ()) {
536 d << String::compose (
537 _("Scaled to %1x%2"),
538 scaled.width, scaled.height
541 d << " (" << fixed << setprecision(2) << scaled.ratio() << ":1)\n";
544 if (scaled != container_size) {
545 d << String::compose (
546 _("Padded with black to fit container %1 (%2x%3)"),
547 film->container()->nickname (),
548 container_size.width, container_size.height
551 d << " (" << fixed << setprecision(2) << container_size.ratio () << ":1)\n";
554 d << _("Content frame rate");
555 d << " " << fixed << setprecision(4) << video_frame_rate() << "\n";
557 FrameRateChange frc (video_frame_rate(), film->video_frame_rate ());
558 d << frc.description () << "\n";