X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fdcp_decoder.cc;h=72db5369c81e9dd162457d5636bb0c3b420b44fa;hb=72b11d5eb036651b6ff68edf3ed270e8fc52960f;hp=25c805d3f2ab74d8a9c77c7d7941d18a8e7aad93;hpb=22b13599407e45d85d1c83e0805aa14965b0ab19;p=dcpomatic.git

diff --git a/src/lib/dcp_decoder.cc b/src/lib/dcp_decoder.cc
index 25c805d3f..72db5369c 100644
--- a/src/lib/dcp_decoder.cc
+++ b/src/lib/dcp_decoder.cc
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2014-2016 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2014-2018 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
@@ -24,7 +24,8 @@
 #include "video_decoder.h"
 #include "audio_decoder.h"
 #include "j2k_image_proxy.h"
-#include "subtitle_decoder.h"
+#include "text_decoder.h"
+#include "ffmpeg_image_proxy.h"
 #include "image.h"
 #include "config.h"
 #include <dcp/dcp.h>
@@ -37,29 +38,46 @@
 #include <dcp/reel_picture_asset.h>
 #include <dcp/reel_sound_asset.h>
 #include <dcp/reel_subtitle_asset.h>
+#include <dcp/reel_closed_caption_asset.h>
 #include <dcp/mono_picture_frame.h>
 #include <dcp/stereo_picture_frame.h>
 #include <dcp/sound_frame.h>
 #include <dcp/sound_asset_reader.h>
+#include <dcp/subtitle_image.h>
 #include <boost/foreach.hpp>
 #include <iostream>
 
+#include "i18n.h"
+
 using std::list;
 using std::cout;
 using boost::shared_ptr;
 using boost::dynamic_pointer_cast;
+using boost::optional;
 
-DCPDecoder::DCPDecoder (shared_ptr<const DCPContent> c, shared_ptr<Log> log)
+DCPDecoder::DCPDecoder (shared_ptr<const DCPContent> c, shared_ptr<Log> log, bool fast)
 	: DCP (c)
 	, _decode_referenced (false)
 {
-	video.reset (new VideoDecoder (this, c, log));
-	audio.reset (new AudioDecoder (this, c->audio, log));
+	if (c->video) {
+		video.reset (new VideoDecoder (this, c, log));
+	}
+	if (c->audio) {
+		audio.reset (new AudioDecoder (this, c->audio, log, fast));
+	}
+	BOOST_FOREACH (shared_ptr<TextContent> 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, log, ContentTime())));
+	}
+
+	list<shared_ptr<dcp::CPL> > cpl_list = cpls ();
 
-	subtitle.reset (new SubtitleDecoder (this, c->subtitle, log));
+	if (cpl_list.empty()) {
+		throw DCPError (_("No CPLs found in DCP."));
+	}
 
 	shared_ptr<dcp::CPL> cpl;
-	BOOST_FOREACH (shared_ptr<dcp::CPL> i, cpls ()) {
+	BOOST_FOREACH (shared_ptr<dcp::CPL> i, cpl_list) {
 		if (_dcp_content->cpl() && i->id() == _dcp_content->cpl().get()) {
 			cpl = i;
 		}
@@ -72,6 +90,8 @@ DCPDecoder::DCPDecoder (shared_ptr<const DCPContent> c, shared_ptr<Log> log)
 		cpl = cpls().front ();
 	}
 
+	set_decode_referenced (false);
+
 	_reels = cpl->reels ();
 
 	_reel = _reels.begin ();
@@ -79,11 +99,12 @@ DCPDecoder::DCPDecoder (shared_ptr<const DCPContent> c, shared_ptr<Log> log)
 	get_readers ();
 }
 
-void
+
+bool
 DCPDecoder::pass ()
 {
 	if (_reel == _reels.end () || !_dcp_content->can_be_played ()) {
-		return;
+		return true;
 	}
 
 	double const vfr = _dcp_content->active_video_frame_rate ();
@@ -91,26 +112,52 @@ DCPDecoder::pass ()
 	/* Frame within the (played part of the) reel that is coming up next */
 	int64_t const frame = _next.frames_round (vfr);
 
+	shared_ptr<dcp::PictureAsset> picture_asset = (*_reel)->main_picture()->asset();
+	DCPOMATIC_ASSERT (picture_asset);
+
+	/* We must emit texts first as when we emit the video for this frame
+	   it will expect already to have the texts.
+	*/
+	pass_texts (_next, picture_asset->size());
+
 	if ((_mono_reader || _stereo_reader) && (_decode_referenced || !_dcp_content->reference_video())) {
-		shared_ptr<dcp::PictureAsset> asset = (*_reel)->main_picture()->asset ();
 		int64_t const entry_point = (*_reel)->main_picture()->entry_point ();
 		if (_mono_reader) {
 			video->emit (
 				shared_ptr<ImageProxy> (
-					new J2KImageProxy (_mono_reader->get_frame (entry_point + frame), asset->size(), AV_PIX_FMT_XYZ12LE)
+					new J2KImageProxy (
+						_mono_reader->get_frame (entry_point + frame),
+						picture_asset->size(),
+						AV_PIX_FMT_XYZ12LE,
+						_forced_reduction
+						)
 					),
 				_offset + frame
 				);
 		} else {
 			video->emit (
 				shared_ptr<ImageProxy> (
-					new J2KImageProxy (_stereo_reader->get_frame (entry_point + frame), asset->size(), dcp::EYE_LEFT, AV_PIX_FMT_XYZ12LE)),
+					new J2KImageProxy (
+						_stereo_reader->get_frame (entry_point + frame),
+						picture_asset->size(),
+						dcp::EYE_LEFT,
+						AV_PIX_FMT_XYZ12LE,
+						_forced_reduction
+						)
+					),
 				_offset + frame
 				);
 
 			video->emit (
 				shared_ptr<ImageProxy> (
-					new J2KImageProxy (_stereo_reader->get_frame (entry_point + frame), asset->size(), dcp::EYE_RIGHT, AV_PIX_FMT_XYZ12LE)),
+					new J2KImageProxy (
+						_stereo_reader->get_frame (entry_point + frame),
+						picture_asset->size(),
+						dcp::EYE_RIGHT,
+						AV_PIX_FMT_XYZ12LE,
+						_forced_reduction
+						)
+					),
 				_offset + frame
 				);
 		}
@@ -135,26 +182,6 @@ DCPDecoder::pass ()
 		audio->emit (_dcp_content->audio->stream(), data, ContentTime::from_frames (_offset, vfr) + _next);
 	}
 
-	if ((*_reel)->main_subtitle() && (_decode_referenced || !_dcp_content->reference_subtitle())) {
-		int64_t const entry_point = (*_reel)->main_subtitle()->entry_point ();
-		list<dcp::SubtitleString> subs = (*_reel)->main_subtitle()->asset()->subtitles_during (
-			dcp::Time (entry_point + frame, vfr, vfr),
-			dcp::Time (entry_point + frame + 1, vfr, vfr),
-			true
-			);
-
-		if (!subs.empty ()) {
-			/* XXX: assuming that all `subs' are at the same time; maybe this is ok */
-			subtitle->emit_text (
-				ContentTimePeriod (
-					ContentTime::from_frames (_offset - entry_point, vfr) + ContentTime::from_seconds (subs.front().in().as_seconds ()),
-					ContentTime::from_frames (_offset - entry_point, vfr) + ContentTime::from_seconds (subs.front().out().as_seconds ())
-					),
-				subs
-				);
-		}
-	}
-
 	_next += ContentTime::from_frames (1, vfr);
 
 	if ((*_reel)->main_picture ()) {
@@ -163,6 +190,101 @@ DCPDecoder::pass ()
 			_next = ContentTime ();
 		}
 	}
+
+	return false;
+}
+
+void
+DCPDecoder::pass_texts (ContentTime next, dcp::Size size)
+{
+	list<shared_ptr<TextDecoder> >::const_iterator decoder = text.begin ();
+	if ((*_reel)->main_subtitle()) {
+		DCPOMATIC_ASSERT (decoder != text.end ());
+		pass_texts (
+			next, (*_reel)->main_subtitle()->asset(), _dcp_content->reference_text(TEXT_OPEN_SUBTITLE), (*_reel)->main_subtitle()->entry_point(), *decoder, size
+			);
+		++decoder;
+	}
+	BOOST_FOREACH (shared_ptr<dcp::ReelClosedCaptionAsset> i, (*_reel)->closed_captions()) {
+		DCPOMATIC_ASSERT (decoder != text.end ());
+		pass_texts (
+			next, i->asset(), _dcp_content->reference_text(TEXT_CLOSED_CAPTION), i->entry_point(), *decoder, size
+			);
+		++decoder;
+	}
+}
+
+void
+DCPDecoder::pass_texts (ContentTime next, shared_ptr<dcp::SubtitleAsset> asset, bool reference, int64_t entry_point, shared_ptr<TextDecoder> decoder, dcp::Size size)
+{
+	double const vfr = _dcp_content->active_video_frame_rate ();
+	/* Frame within the (played part of the) reel that is coming up next */
+	int64_t const frame = next.frames_round (vfr);
+
+	if (_decode_referenced || !reference) {
+		list<shared_ptr<dcp::Subtitle> > subs = asset->subtitles_during (
+			dcp::Time (entry_point + frame, vfr, vfr),
+			dcp::Time (entry_point + frame + 1, vfr, vfr),
+			true
+			);
+
+		BOOST_FOREACH (shared_ptr<dcp::Subtitle> i, subs) {
+			shared_ptr<dcp::SubtitleString> is = dynamic_pointer_cast<dcp::SubtitleString> (i);
+			if (is) {
+				list<dcp::SubtitleString> s;
+				s.push_back (*is);
+				decoder->emit_plain (
+					ContentTimePeriod (
+						ContentTime::from_frames (_offset - entry_point, vfr) + ContentTime::from_seconds (i->in().as_seconds ()),
+						ContentTime::from_frames (_offset - entry_point, vfr) + ContentTime::from_seconds (i->out().as_seconds ())
+						),
+					s
+					);
+			}
+
+			shared_ptr<dcp::SubtitleImage> ii = dynamic_pointer_cast<dcp::SubtitleImage> (i);
+			if (ii) {
+				FFmpegImageProxy proxy (ii->png_image());
+				shared_ptr<Image> image = proxy.image().first;
+				/* set up rect with height and width */
+				dcpomatic::Rect<double> rect(0, 0, image->size().width / double(size.width), image->size().height / double(size.height));
+
+				/* add in position */
+
+				switch (ii->h_align()) {
+				case dcp::HALIGN_LEFT:
+					rect.x += ii->h_position();
+					break;
+				case dcp::HALIGN_CENTER:
+					rect.x += 0.5 + ii->h_position() - rect.width / 2;
+					break;
+				case dcp::HALIGN_RIGHT:
+					rect.x += 1 - ii->h_position() - rect.width;
+					break;
+				}
+
+				switch (ii->v_align()) {
+				case dcp::VALIGN_TOP:
+					rect.y += ii->v_position();
+					break;
+				case dcp::VALIGN_CENTER:
+					rect.y += 0.5 + ii->v_position() - rect.height / 2;
+					break;
+				case dcp::VALIGN_BOTTOM:
+					rect.y += 1 - ii->v_position() - rect.height;
+					break;
+				}
+
+				decoder->emit_bitmap (
+					ContentTimePeriod (
+						ContentTime::from_frames (_offset - entry_point, vfr) + ContentTime::from_seconds (i->in().as_seconds ()),
+						ContentTime::from_frames (_offset - entry_point, vfr) + ContentTime::from_seconds (i->out().as_seconds ())
+						),
+					image, rect
+					);
+			}
+		}
+	}
 }
 
 void
@@ -208,12 +330,46 @@ DCPDecoder::get_readers ()
 }
 
 void
-DCPDecoder::seek (ContentTime t, bool)
+DCPDecoder::seek (ContentTime t, bool accurate)
 {
+	if (!_dcp_content->can_be_played ()) {
+		return;
+	}
+
+	Decoder::seek (t, accurate);
+
 	_reel = _reels.begin ();
 	_offset = 0;
 	get_readers ();
 
+	int const pre_roll_seconds = 2;
+
+	/* Pre-roll for subs */
+
+	ContentTime pre = t - ContentTime::from_seconds (pre_roll_seconds);
+	if (pre < ContentTime()) {
+		pre = ContentTime ();
+	}
+
+	/* Seek to pre-roll position */
+
+	while (_reel != _reels.end() && pre >= ContentTime::from_frames ((*_reel)->main_picture()->duration(), _dcp_content->active_video_frame_rate ())) {
+		ContentTime rd = ContentTime::from_frames ((*_reel)->main_picture()->duration(), _dcp_content->active_video_frame_rate ());
+		pre -= rd;
+		t -= rd;
+		next_reel ();
+	}
+
+	/* Pass texts in the pre-roll */
+
+	double const vfr = _dcp_content->active_video_frame_rate ();
+	for (int i = 0; i < pre_roll_seconds * vfr; ++i) {
+		pass_texts (pre, (*_reel)->main_picture()->asset()->size());
+		pre += ContentTime::from_frames (1, vfr);
+	}
+
+	/* Seek to correct position */
+
 	while (_reel != _reels.end() && t >= ContentTime::from_frames ((*_reel)->main_picture()->duration(), _dcp_content->active_video_frame_rate ())) {
 		t -= ContentTime::from_frames ((*_reel)->main_picture()->duration(), _dcp_content->active_video_frame_rate ());
 		next_reel ();
@@ -223,7 +379,20 @@ DCPDecoder::seek (ContentTime t, bool)
 }
 
 void
-DCPDecoder::set_decode_referenced ()
+DCPDecoder::set_decode_referenced (bool r)
+{
+	_decode_referenced = r;
+
+	if (video) {
+		video->set_ignore (_dcp_content->reference_video() && !_decode_referenced);
+	}
+	if (audio) {
+		audio->set_ignore (_dcp_content->reference_audio() && !_decode_referenced);
+	}
+}
+
+void
+DCPDecoder::set_forced_reduction (optional<int> reduction)
 {
-	_decode_referenced = true;
+	_forced_reduction = reduction;
 }