Rename SafeStringStream -> locked_stringstream. Bump deps for removal of stringstream.
[dcpomatic.git] / src / lib / dcp_decoder.cc
index ada0d01d1db617dabf66f117f92971e008102776..283cb29054ab900c0abc9881abccce032f6a05a9 100644 (file)
@@ -1,25 +1,30 @@
 /*
-    Copyright (C) 2014-2015 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>
 
@@ -42,73 +50,94 @@ using std::cout;
 using boost::shared_ptr;
 using boost::dynamic_pointer_cast;
 
-DCPDecoder::DCPDecoder (shared_ptr<const DCPContent> c, bool fast)
-       : VideoDecoder (c)
-       , AudioDecoder (c, fast)
-       , SubtitleDecoder (c)
-       , _dcp_content (c)
+DCPDecoder::DCPDecoder (shared_ptr<const DCPContent> c, shared_ptr<Log> log)
+       : _dcp_content (c)
+       , _decode_referenced (false)
 {
+       video.reset (new VideoDecoder (this, c, log));
+       audio.reset (new AudioDecoder (this, c->audio, log));
+
+       subtitle.reset (
+               new SubtitleDecoder (
+                       this,
+                       c->subtitle,
+                       bind (&DCPDecoder::image_subtitles_during, this, _1, _2),
+                       bind (&DCPDecoder::text_subtitles_during, this, _1, _2)
+                       )
+               );
+
        dcp::DCP dcp (c->directory ());
-       dcp.read ();
+       dcp.read (false, 0, true);
        if (c->kdm ()) {
                dcp.add (dcp::DecryptedKDM (c->kdm().get (), Config::instance()->decryption_chain()->key().get ()));
        }
        DCPOMATIC_ASSERT (dcp.cpls().size() == 1);
        _reels = dcp.cpls().front()->reels ();
+
        _reel = _reels.begin ();
+       _offset = 0;
+       get_readers ();
 }
 
 bool
-DCPDecoder::pass (PassReason reason)
+DCPDecoder::pass (PassReason reason, bool)
 {
        if (_reel == _reels.end () || !_dcp_content->can_be_played ()) {
                return true;
        }
 
-       double const vfr = _dcp_content->video_frame_rate ();
+       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_picture () && reason != PASS_REASON_SUBTITLE) {
+       if ((_mono_reader || _stereo_reader) && reason != PASS_REASON_SUBTITLE && (_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->give (
+                               shared_ptr<ImageProxy> (
+                                       new J2KImageProxy (_mono_reader->get_frame (entry_point + frame), asset->size(), AV_PIX_FMT_XYZ12LE)
+                                       ),
+                               _offset + frame
+                               );
                } else {
-                       video (
-                               shared_ptr<ImageProxy> (new J2KImageProxy (stereo->get_frame (entry_point + frame), asset->size(), dcp::EYE_LEFT)),
-                               frame
+                       video->give (
+                               shared_ptr<ImageProxy> (
+                                       new J2KImageProxy (_stereo_reader->get_frame (entry_point + frame), asset->size(), dcp::EYE_LEFT, AV_PIX_FMT_XYZ12LE)),
+                               _offset + frame
                                );
 
-                       video (
-                               shared_ptr<ImageProxy> (new J2KImageProxy (stereo->get_frame (entry_point + frame), asset->size(), dcp::EYE_RIGHT)),
-                               frame
+                       video->give (
+                               shared_ptr<ImageProxy> (
+                                       new J2KImageProxy (_stereo_reader->get_frame (entry_point + frame), asset->size(), dcp::EYE_RIGHT, AV_PIX_FMT_XYZ12LE)),
+                               _offset + frame
                                );
                }
        }
 
-       if ((*_reel)->main_sound () && reason != PASS_REASON_SUBTITLE) {
+       if (_sound_reader && reason != PASS_REASON_SUBTITLE && (_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] = static_cast<int> ((from[0] << 8) | (from[1] << 16) | (from[2] << 24)) / static_cast<float> (INT_MAX - 256);
+                               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->give (_dcp_content->audio->stream(), data, ContentTime::from_frames (_offset, vfr) + _next);
        }
 
-       if ((*_reel)->main_subtitle ()) {
+       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()->subtitle_asset()->subtitles_during (
+               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
@@ -116,10 +145,10 @@ DCPDecoder::pass (PassReason reason)
 
                if (!subs.empty ()) {
                        /* XXX: assuming that all `subs' are at the same time; maybe this is ok */
-                       text_subtitle (
+                       subtitle->give_text (
                                ContentTimePeriod (
-                                       ContentTime::from_seconds (subs.front().in().as_seconds ()),
-                                       ContentTime::from_seconds (subs.front().out().as_seconds ())
+                                       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
                                );
@@ -130,24 +159,68 @@ DCPDecoder::pass (PassReason reason)
 
        if ((*_reel)->main_picture ()) {
                if (_next.frames_round (vfr) >= (*_reel)->main_picture()->duration()) {
-                       ++_reel;
+                       next_reel ();
+                       _next = ContentTime ();
                }
        }
 
        return false;
 }
 
+void
+DCPDecoder::next_reel ()
+{
+       _offset += (*_reel)->main_picture()->duration();
+       ++_reel;
+       get_readers ();
+}
+
+void
+DCPDecoder::get_readers ()
+{
+       if (_reel == _reels.end()) {
+               _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);
+       video->seek (t, accurate);
+       audio->seek (t, accurate);
+       subtitle->seek (t, accurate);
 
+       _offset = 0;
        _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;
+       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;
@@ -166,7 +239,7 @@ DCPDecoder::text_subtitles_during (ContentTimePeriod period, bool starting) cons
        /* XXX: inefficient */
 
        list<ContentTimePeriod> ctp;
-       double const vfr = _dcp_content->video_frame_rate ();
+       double const vfr = _dcp_content->active_video_frame_rate ();
 
        BOOST_FOREACH (shared_ptr<dcp::Reel> r, _reels) {
                if (!r->main_subtitle ()) {
@@ -175,7 +248,7 @@ DCPDecoder::text_subtitles_during (ContentTimePeriod period, bool starting) cons
 
                int64_t const entry_point = r->main_subtitle()->entry_point ();
 
-               list<dcp::SubtitleString> subs = r->main_subtitle()->subtitle_asset()->subtitles_during (
+               list<dcp::SubtitleString> subs = r->main_subtitle()->asset()->subtitles_during (
                        dcp::Time (period.from.seconds(), 1000) - dcp::Time (entry_point, vfr, vfr),
                        dcp::Time (period.to.seconds(), 1000) - dcp::Time (entry_point, vfr, vfr),
                        starting
@@ -193,3 +266,9 @@ DCPDecoder::text_subtitles_during (ContentTimePeriod period, bool starting) cons
 
        return ctp;
 }
+
+void
+DCPDecoder::set_decode_referenced ()
+{
+       _decode_referenced = true;
+}