X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fdcp_decoder.cc;h=3379f8e90e427bf469cacb939608332cf7fc148c;hb=70a7bb2bd72f90642e01ed660f7d7de495ea0370;hp=0ec50e0cd24ff9a52523707a121ddb50acb22544;hpb=e60bb3e51bd1508b149e6b8f6608f09b5196ae26;p=dcpomatic.git

diff --git a/src/lib/dcp_decoder.cc b/src/lib/dcp_decoder.cc
index 0ec50e0cd..3379f8e90 100644
--- a/src/lib/dcp_decoder.cc
+++ b/src/lib/dcp_decoder.cc
@@ -1,57 +1,96 @@
 /*
-    Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2014-2016 Carl Hetherington <cth@carlh.net>
 
-    This program is free software; you can redistribute it and/or modify
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
 
-    This program is distributed in the hope that it will be useful,
+    DCP-o-matic is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
 
 */
 
 #include "dcp_decoder.h"
 #include "dcp_content.h"
+#include "audio_content.h"
+#include "video_decoder.h"
+#include "audio_decoder.h"
 #include "j2k_image_proxy.h"
+#include "subtitle_decoder.h"
 #include "image.h"
 #include "config.h"
 #include <dcp/dcp.h>
 #include <dcp/cpl.h>
 #include <dcp/reel.h>
 #include <dcp/mono_picture_asset.h>
+#include <dcp/mono_picture_asset_reader.h>
 #include <dcp/stereo_picture_asset.h>
+#include <dcp/stereo_picture_asset_reader.h>
 #include <dcp/reel_picture_asset.h>
 #include <dcp/reel_sound_asset.h>
+#include <dcp/reel_subtitle_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 <boost/foreach.hpp>
+#include <iostream>
 
 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)
-	: VideoDecoder (c)
-	, AudioDecoder (c)
-	, SubtitleDecoder (c)
-	, _dcp_content (c)
+DCPDecoder::DCPDecoder (shared_ptr<const DCPContent> c, shared_ptr<Log> log, bool fast)
+	: DCP (c)
+	, _decode_referenced (false)
 {
-	dcp::DCP dcp (c->directory ());
-	dcp.read ();
-	if (c->kdm ()) {
-		dcp.add (dcp::DecryptedKDM (c->kdm().get (), Config::instance()->decryption_private_key ()));
+	video.reset (new VideoDecoder (this, c, log));
+	if (c->audio) {
+		audio.reset (new AudioDecoder (this, c->audio, log, fast));
+	}
+	if (c->subtitle) {
+		/* XXX: this time here should be the time of the first subtitle, not 0 */
+		subtitle.reset (new SubtitleDecoder (this, c->subtitle, log, ContentTime()));
+	}
+
+	shared_ptr<dcp::CPL> cpl;
+	BOOST_FOREACH (shared_ptr<dcp::CPL> i, cpls ()) {
+		if (_dcp_content->cpl() && i->id() == _dcp_content->cpl().get()) {
+			cpl = i;
+		}
+	}
+
+	if (!cpl) {
+		/* No CPL found; probably an old file that doesn't specify it;
+		   just use the first one.
+		*/
+		cpl = cpls().front ();
+	}
+
+	if (!_decode_referenced) {
+		if (c->reference_video()) {
+			video->set_ignore();
+		}
+		if (c->reference_audio()) {
+			audio->set_ignore();
+		}
 	}
-	DCPOMATIC_ASSERT (dcp.cpls().size() == 1);
-	_reels = dcp.cpls().front()->reels ();
+
+	_reels = cpl->reels ();
+
 	_reel = _reels.begin ();
+	_offset = 0;
+	get_readers ();
 }
 
 bool
@@ -61,86 +100,212 @@ DCPDecoder::pass ()
 		return true;
 	}
 
-	float const vfr = _dcp_content->video_frame_rate ();
-	int64_t const frame = _next.frames (vfr);
+	double const vfr = _dcp_content->active_video_frame_rate ();
 
-	if ((*_reel)->main_picture ()) {
+	/* Frame within the (played part of the) reel that is coming up next */
+	int64_t const frame = _next.frames_round (vfr);
+
+	if ((_mono_reader || _stereo_reader) && (_decode_referenced || !_dcp_content->reference_video())) {
 		shared_ptr<dcp::PictureAsset> asset = (*_reel)->main_picture()->asset ();
-		shared_ptr<dcp::MonoPictureAsset> mono = dynamic_pointer_cast<dcp::MonoPictureAsset> (asset);
-		shared_ptr<dcp::StereoPictureAsset> stereo = dynamic_pointer_cast<dcp::StereoPictureAsset> (asset);
 		int64_t const entry_point = (*_reel)->main_picture()->entry_point ();
-		if (mono) {
-			video (shared_ptr<ImageProxy> (new J2KImageProxy (mono->get_frame (entry_point + frame), asset->size())), frame);
+		if (_mono_reader) {
+			video->emit (
+				shared_ptr<ImageProxy> (
+					new J2KImageProxy (
+						_mono_reader->get_frame (entry_point + frame),
+						asset->size(),
+						AV_PIX_FMT_XYZ12LE,
+						_forced_reduction
+						)
+					),
+				_offset + frame
+				);
 		} else {
-			video (
-				shared_ptr<ImageProxy> (new J2KImageProxy (stereo->get_frame (entry_point + frame), asset->size(), dcp::EYE_LEFT)),
-				frame
+			video->emit (
+				shared_ptr<ImageProxy> (
+					new J2KImageProxy (
+						_stereo_reader->get_frame (entry_point + frame),
+						asset->size(),
+						dcp::EYE_LEFT,
+						AV_PIX_FMT_XYZ12LE,
+						_forced_reduction
+						)
+					),
+				_offset + frame
 				);
 
-			video (
-				shared_ptr<ImageProxy> (new J2KImageProxy (stereo->get_frame (entry_point + frame), asset->size(), dcp::EYE_RIGHT)),
-				frame
+			video->emit (
+				shared_ptr<ImageProxy> (
+					new J2KImageProxy (
+						_stereo_reader->get_frame (entry_point + frame),
+						asset->size(),
+						dcp::EYE_RIGHT,
+						AV_PIX_FMT_XYZ12LE,
+						_forced_reduction
+						)
+					),
+				_offset + frame
 				);
 		}
 	}
 
-	if ((*_reel)->main_sound ()) {
+	if (_sound_reader && (_decode_referenced || !_dcp_content->reference_audio())) {
 		int64_t const entry_point = (*_reel)->main_sound()->entry_point ();
-		shared_ptr<const dcp::SoundFrame> sf = (*_reel)->main_sound()->asset()->get_frame (entry_point + frame);
+		shared_ptr<const dcp::SoundFrame> sf = _sound_reader->get_frame (entry_point + frame);
 		uint8_t const * from = sf->data ();
 
-		int const channels = _dcp_content->audio_stream()->channels ();
+		int const channels = _dcp_content->audio->stream()->channels ();
 		int const frames = sf->size() / (3 * channels);
 		shared_ptr<AudioBuffers> data (new AudioBuffers (channels, frames));
+		float** data_data = data->data();
 		for (int i = 0; i < frames; ++i) {
 			for (int j = 0; j < channels; ++j) {
-				data->data()[j][i] = float (from[0] | (from[1] << 8) | (from[2] << 16)) / (1 << 23);
+				data_data[j][i] = static_cast<int> ((from[0] << 8) | (from[1] << 16) | (from[2] << 24)) / static_cast<float> (INT_MAX - 256);
 				from += 3;
 			}
 		}
 
-		audio (_dcp_content->audio_stream(), data, _next);
+		audio->emit (_dcp_content->audio->stream(), data, ContentTime::from_frames (_offset, vfr) + _next);
 	}
 
-	/* XXX: subtitle */
+	pass_subtitles (_next);
 
 	_next += ContentTime::from_frames (1, vfr);
 
 	if ((*_reel)->main_picture ()) {
-		if (_next.frames (vfr) >= (*_reel)->main_picture()->duration()) {
-			++_reel;
+		if (_next.frames_round (vfr) >= (*_reel)->main_picture()->duration()) {
+			next_reel ();
+			_next = ContentTime ();
 		}
 	}
 
 	return false;
 }
 
+void
+DCPDecoder::pass_subtitles (ContentTime next)
+{
+	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 ((*_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
+			);
+
+		BOOST_FOREACH (dcp::SubtitleString i, subs) {
+			list<dcp::SubtitleString> s;
+			s.push_back (i);
+			subtitle->emit_text (
+				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
+				);
+		}
+	}
+}
+
+void
+DCPDecoder::next_reel ()
+{
+	_offset += (*_reel)->main_picture()->duration();
+	++_reel;
+	get_readers ();
+}
+
+void
+DCPDecoder::get_readers ()
+{
+	if (_reel == _reels.end() || !_dcp_content->can_be_played ()) {
+		_mono_reader.reset ();
+		_stereo_reader.reset ();
+		_sound_reader.reset ();
+		return;
+	}
+
+	if ((*_reel)->main_picture()) {
+		shared_ptr<dcp::PictureAsset> asset = (*_reel)->main_picture()->asset ();
+		shared_ptr<dcp::MonoPictureAsset> mono = dynamic_pointer_cast<dcp::MonoPictureAsset> (asset);
+		shared_ptr<dcp::StereoPictureAsset> stereo = dynamic_pointer_cast<dcp::StereoPictureAsset> (asset);
+		DCPOMATIC_ASSERT (mono || stereo);
+		if (mono) {
+			_mono_reader = mono->start_read ();
+			_stereo_reader.reset ();
+		} else {
+			_stereo_reader = stereo->start_read ();
+			_mono_reader.reset ();
+		}
+	} else {
+		_mono_reader.reset ();
+		_stereo_reader.reset ();
+	}
+
+	if ((*_reel)->main_sound()) {
+		_sound_reader = (*_reel)->main_sound()->asset()->start_read ();
+	} else {
+		_sound_reader.reset ();
+	}
+}
+
 void
 DCPDecoder::seek (ContentTime t, bool accurate)
 {
-	VideoDecoder::seek (t, accurate);
-	AudioDecoder::seek (t, accurate);
-	SubtitleDecoder::seek (t, accurate);
+	Decoder::seek (t, accurate);
 
 	_reel = _reels.begin ();
-	while (_reel != _reels.end() && t >= ContentTime::from_frames ((*_reel)->main_picture()->duration(), _dcp_content->video_frame_rate ())) {
-		t -= ContentTime::from_frames ((*_reel)->main_picture()->duration(), _dcp_content->video_frame_rate ());
-		++_reel;
+	_offset = 0;
+	get_readers ();
+
+	if (accurate) {
+		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 ())) {
+			pre -= ContentTime::from_frames ((*_reel)->main_picture()->duration(), _dcp_content->active_video_frame_rate ());
+			next_reel ();
+		}
+
+		/* Pass subtitles in the pre-roll */
+
+		double const vfr = _dcp_content->active_video_frame_rate ();
+		for (int i = 0; i < pre_roll_seconds * vfr; ++i) {
+			pass_subtitles (pre);
+			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 ();
 	}
 
 	_next = t;
 }
 
-
-list<ContentTimePeriod>
-DCPDecoder::image_subtitles_during (ContentTimePeriod, bool) const
+void
+DCPDecoder::set_decode_referenced ()
 {
-	return list<ContentTimePeriod> ();
+	_decode_referenced = true;
 }
 
-list<ContentTimePeriod>
-DCPDecoder::text_subtitles_during (ContentTimePeriod, bool) const
+void
+DCPDecoder::set_forced_reduction (optional<int> reduction)
 {
-	/* XXX */
-	return list<ContentTimePeriod> ();
+	_forced_reduction = reduction;
 }