X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fdcp_decoder.cc;h=4076936ddca2460898d06f4aae30046fbc3ef9ba;hb=8fedaaa75c4586a4cc7ffb393bd71d1fdb091dc8;hp=95cad926620ad9a4824b40e8ff1914331d3e776e;hpb=19f51503621a57794bd79bac053c9e6549a69f46;p=dcpomatic.git

diff --git a/src/lib/dcp_decoder.cc b/src/lib/dcp_decoder.cc
index 95cad9266..4076936dd 100644
--- a/src/lib/dcp_decoder.cc
+++ b/src/lib/dcp_decoder.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2014-2018 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2014-2020 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
@@ -18,6 +18,7 @@
 
 */
 
+#include "atmos_decoder.h"
 #include "dcp_decoder.h"
 #include "dcp_content.h"
 #include "audio_content.h"
@@ -28,6 +29,8 @@
 #include "ffmpeg_image_proxy.h"
 #include "image.h"
 #include "config.h"
+#include "digester.h"
+#include "frame_interval_checker.h"
 #include <dcp/dcp.h>
 #include <dcp/cpl.h>
 #include <dcp/reel.h>
@@ -45,15 +48,18 @@
 #include <dcp/sound_asset_reader.h>
 #include <dcp/subtitle_image.h>
 #include <dcp/decrypted_kdm.h>
-#include <boost/foreach.hpp>
+#include <dcp/reel_atmos_asset.h>
 #include <iostream>
 
 #include "i18n.h"
 
 using std::list;
 using std::cout;
-using boost::shared_ptr;
-using boost::dynamic_pointer_cast;
+using std::map;
+using std::string;
+using std::vector;
+using std::shared_ptr;
+using std::dynamic_pointer_cast;
 using boost::optional;
 using namespace dcpomatic;
 
@@ -69,22 +75,27 @@ DCPDecoder::DCPDecoder (shared_ptr<const Film> film, shared_ptr<const DCPContent
 		if (c->audio) {
 			audio.reset (new AudioDecoder (this, c->audio, fast));
 		}
-		BOOST_FOREACH (shared_ptr<TextContent> i, c->text) {
+		for (auto i: c->text) {
 			/* XXX: this time here should be the time of the first subtitle, not 0 */
 			text.push_back (shared_ptr<TextDecoder> (new TextDecoder (this, i, ContentTime())));
 		}
+		if (c->atmos) {
+			atmos.reset (new AtmosDecoder (this, c));
+		}
 	}
 
-	if (old) {
-		_reels = old->_reels;
+	/* We try to avoid re-scanning the DCP's files every time we make a new DCPDecoder; we do this
+	   by re-using the _reels list.  Before we do this we need to check that nothing too serious
+	   has changed in the DCPContent.
 
-		/* We might have gained a KDM since we made the Reel objects */
-		if (_dcp_content->kdm ()) {
-			dcp::DecryptedKDM k = decrypted_kdm ();
-			BOOST_FOREACH (shared_ptr<dcp::Reel> i, _reels) {
-				i->add (k);
-			}
-		}
+	   We do this by storing a digest of the important bits of the DCPContent and then checking that's
+	   the same before we re-use _reels.
+	*/
+
+	_lazy_digest = calculate_lazy_digest (c);
+
+	if (old && old->lazy_digest() == _lazy_digest) {
+		_reels = old->_reels;
 	} else {
 
 		list<shared_ptr<dcp::CPL> > cpl_list = cpls ();
@@ -94,7 +105,7 @@ DCPDecoder::DCPDecoder (shared_ptr<const Film> film, shared_ptr<const DCPContent
 		}
 
 		shared_ptr<dcp::CPL> cpl;
-		BOOST_FOREACH (shared_ptr<dcp::CPL> i, cpl_list) {
+		for (auto i: cpl_list) {
 			if (_dcp_content->cpl() && i->id() == _dcp_content->cpl().get()) {
 				cpl = i;
 			}
@@ -121,7 +132,14 @@ DCPDecoder::DCPDecoder (shared_ptr<const Film> film, shared_ptr<const DCPContent
 bool
 DCPDecoder::pass ()
 {
-	if (_reel == _reels.end () || !_dcp_content->can_be_played ()) {
+	if (!_dcp_content->can_be_played()) {
+		return true;
+	}
+
+	if (_reel == _reels.end()) {
+		if (audio) {
+			audio->flush ();
+		}
 		return true;
 	}
 
@@ -160,7 +178,7 @@ DCPDecoder::pass ()
 					new J2KImageProxy (
 						_stereo_reader->get_frame (entry_point + frame),
 						picture_asset->size(),
-						dcp::EYE_LEFT,
+						dcp::Eye::LEFT,
 						AV_PIX_FMT_XYZ12LE,
 						_forced_reduction
 						)
@@ -174,7 +192,7 @@ DCPDecoder::pass ()
 					new J2KImageProxy (
 						_stereo_reader->get_frame (entry_point + frame),
 						picture_asset->size(),
-						dcp::EYE_RIGHT,
+						dcp::Eye::RIGHT,
 						AV_PIX_FMT_XYZ12LE,
 						_forced_reduction
 						)
@@ -203,6 +221,12 @@ DCPDecoder::pass ()
 		audio->emit (film(), _dcp_content->audio->stream(), data, ContentTime::from_frames (_offset, vfr) + _next);
 	}
 
+	if (_atmos_reader) {
+		DCPOMATIC_ASSERT (_atmos_metadata);
+		int64_t const entry_point = (*_reel)->atmos()->entry_point().get_value_or(0);
+		atmos->emit (film(), _atmos_reader->get_frame(entry_point + frame), _offset + frame, *_atmos_metadata);
+	}
+
 	_next += ContentTime::from_frames (1, vfr);
 
 	if ((*_reel)->main_picture ()) {
@@ -219,22 +243,28 @@ void
 DCPDecoder::pass_texts (ContentTime next, dcp::Size size)
 {
 	list<shared_ptr<TextDecoder> >::const_iterator decoder = text.begin ();
+	if (decoder == text.end()) {
+		/* It's possible that there is now a main subtitle but no TextDecoders, for example if
+		   the CPL has just changed but the TextContent's texts have not been recreated yet.
+		*/
+		return;
+	}
+
 	if ((*_reel)->main_subtitle()) {
-		DCPOMATIC_ASSERT (decoder != text.end ());
 		pass_texts (
 			next,
 			(*_reel)->main_subtitle()->asset(),
-			_dcp_content->reference_text(TEXT_OPEN_SUBTITLE),
+			_dcp_content->reference_text(TextType::OPEN_SUBTITLE),
 			(*_reel)->main_subtitle()->entry_point().get_value_or(0),
 			*decoder,
 			size
 			);
 		++decoder;
 	}
-	BOOST_FOREACH (shared_ptr<dcp::ReelClosedCaptionAsset> i, (*_reel)->closed_captions()) {
-		DCPOMATIC_ASSERT (decoder != text.end ());
+
+	for (auto i: (*_reel)->closed_captions()) {
 		pass_texts (
-			next, i->asset(), _dcp_content->reference_text(TEXT_CLOSED_CAPTION), i->entry_point().get_value_or(0), *decoder, size
+			next, i->asset(), _dcp_content->reference_text(TextType::CLOSED_CAPTION), i->entry_point().get_value_or(0), *decoder, size
 			);
 		++decoder;
 	}
@@ -250,7 +280,7 @@ DCPDecoder::pass_texts (
 	int64_t const frame = next.frames_round (vfr);
 
 	if (_decode_referenced || !reference) {
-		list<shared_ptr<dcp::Subtitle> > subs = asset->subtitles_during (
+		auto subs = asset->subtitles_during (
 			dcp::Time (entry_point + frame, vfr, vfr),
 			dcp::Time (entry_point + frame + 1, vfr, vfr),
 			true
@@ -258,11 +288,11 @@ DCPDecoder::pass_texts (
 
 		list<dcp::SubtitleString> strings;
 
-		BOOST_FOREACH (shared_ptr<dcp::Subtitle> i, subs) {
-			shared_ptr<dcp::SubtitleString> is = dynamic_pointer_cast<dcp::SubtitleString> (i);
+		for (auto i: subs) {
+			auto is = dynamic_pointer_cast<const dcp::SubtitleString>(i);
 			if (is) {
 				if (!strings.empty() && (strings.back().in() != is->in() || strings.back().out() != is->out())) {
-					dcp::SubtitleString b = strings.back();
+					auto b = strings.back();
 					decoder->emit_plain (
 						ContentTimePeriod (
 							ContentTime::from_frames(_offset - entry_point, vfr) + ContentTime::from_seconds(b.in().as_seconds()),
@@ -280,7 +310,7 @@ DCPDecoder::pass_texts (
 			   this would need to be done both here and in DCPSubtitleDecoder.
 			*/
 
-			shared_ptr<dcp::SubtitleImage> ii = dynamic_pointer_cast<dcp::SubtitleImage> (i);
+			auto ii = dynamic_pointer_cast<const dcp::SubtitleImage>(i);
 			if (ii) {
 				emit_subtitle_image (
 					ContentTimePeriod (
@@ -295,7 +325,7 @@ DCPDecoder::pass_texts (
 		}
 
 		if (!strings.empty()) {
-			dcp::SubtitleString b = strings.back();
+			auto b = strings.back();
 			decoder->emit_plain (
 				ContentTimePeriod (
 					ContentTime::from_frames(_offset - entry_point, vfr) + ContentTime::from_seconds(b.in().as_seconds()),
@@ -323,6 +353,7 @@ DCPDecoder::get_readers ()
 		_mono_reader.reset ();
 		_stereo_reader.reset ();
 		_sound_reader.reset ();
+		_atmos_reader.reset ();
 		return;
 	}
 
@@ -348,6 +379,15 @@ DCPDecoder::get_readers ()
 	} else {
 		_sound_reader.reset ();
 	}
+
+	if ((*_reel)->atmos()) {
+		shared_ptr<dcp::AtmosAsset> asset = (*_reel)->atmos()->asset();
+		_atmos_reader = asset->start_read();
+		_atmos_metadata = AtmosMetadata (asset);
+	} else {
+		_atmos_reader.reset ();
+		_atmos_metadata = boost::none;
+	}
 }
 
 void
@@ -425,3 +465,43 @@ DCPDecoder::set_forced_reduction (optional<int> reduction)
 {
 	_forced_reduction = reduction;
 }
+
+string
+DCPDecoder::calculate_lazy_digest (shared_ptr<const DCPContent> c) const
+{
+	Digester d;
+	for (auto i: c->paths()) {
+		d.add (i.string());
+	}
+	if (_dcp_content->kdm()) {
+		d.add(_dcp_content->kdm()->id());
+	}
+	d.add (static_cast<bool>(c->cpl()));
+	if (c->cpl()) {
+		d.add (c->cpl().get());
+	}
+	return d.get ();
+}
+
+ContentTime
+DCPDecoder::position () const
+{
+	return ContentTime::from_frames(_offset, _dcp_content->active_video_frame_rate(film())) + _next;
+}
+
+
+vector<FontData>
+DCPDecoder::fonts () const
+{
+	vector<FontData> data;
+	for (auto i: _reels) {
+		if (i->main_subtitle() && i->main_subtitle()->asset()) {
+			map<string, dcp::ArrayData> fm = i->main_subtitle()->asset()->font_data();
+			for (map<string, dcp::ArrayData>::const_iterator j = fm.begin(); j != fm.end(); ++j) {
+				data.push_back (FontData(j->first, j->second));
+			}
+		}
+	}
+	return data;
+}
+