2 Copyright (C) 2014 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.
23 #include <dcp/mono_picture_mxf.h>
24 #include <dcp/stereo_picture_mxf.h>
25 #include <dcp/reel_picture_asset.h>
26 #include <dcp/reel_sound_asset.h>
27 #include <dcp/mono_picture_frame.h>
28 #include <dcp/stereo_picture_frame.h>
29 #include <dcp/sound_frame.h>
30 #include "dcp_decoder.h"
31 #include "dcp_content.h"
32 #include "j2k_image_proxy.h"
37 using boost::shared_ptr;
38 using boost::dynamic_pointer_cast;
40 DCPDecoder::DCPDecoder (shared_ptr<const DCPContent> c, shared_ptr<Log> log)
47 dcp::DCP dcp (c->directory ());
49 assert (dcp.cpls().size() == 1);
50 _reels = dcp.cpls().front()->reels ();
51 _reel = _reels.begin ();
57 if (_reel == _reels.end ()) {
61 float const vfr = _dcp_content->video_frame_rate ();
62 int64_t const frame = _next.frames (vfr);
64 if ((*_reel)->main_picture ()) {
65 shared_ptr<dcp::PictureMXF> mxf = (*_reel)->main_picture()->mxf ();
66 shared_ptr<dcp::MonoPictureMXF> mono = dynamic_pointer_cast<dcp::MonoPictureMXF> (mxf);
67 shared_ptr<dcp::StereoPictureMXF> stereo = dynamic_pointer_cast<dcp::StereoPictureMXF> (mxf);
68 int64_t const entry_point = (*_reel)->main_picture()->entry_point ();
70 video (shared_ptr<ImageProxy> (new J2KImageProxy (mono->get_frame (entry_point + frame), mxf->size(), _log)), frame);
73 shared_ptr<ImageProxy> (new J2KImageProxy (stereo->get_frame (entry_point + frame), mxf->size(), dcp::EYE_LEFT, _log)),
78 shared_ptr<ImageProxy> (new J2KImageProxy (stereo->get_frame (entry_point + frame), mxf->size(), dcp::EYE_RIGHT, _log)),
84 if ((*_reel)->main_sound ()) {
85 int64_t const entry_point = (*_reel)->main_sound()->entry_point ();
86 shared_ptr<const dcp::SoundFrame> sf = (*_reel)->main_sound()->mxf()->get_frame (entry_point + frame);
87 uint8_t const * from = sf->data ();
89 int const channels = _dcp_content->audio_channels ();
90 int const frames = sf->size() / (3 * channels);
91 shared_ptr<AudioBuffers> data (new AudioBuffers (channels, frames));
92 for (int i = 0; i < frames; ++i) {
93 for (int j = 0; j < channels; ++j) {
94 data->data()[j][i] = float (from[0] | (from[1] << 8) | (from[2] << 16)) / (1 << 23);
104 _next += ContentTime::from_frames (1, vfr);
106 if ((*_reel)->main_picture ()) {
107 if (_next.frames (vfr) >= (*_reel)->main_picture()->duration()) {
116 DCPDecoder::seek (ContentTime t, bool accurate)
118 VideoDecoder::seek (t, accurate);
119 AudioDecoder::seek (t, accurate);
120 SubtitleDecoder::seek (t, accurate);
122 _reel = _reels.begin ();
123 while (_reel != _reels.end() && t >= ContentTime::from_frames ((*_reel)->main_picture()->duration(), _dcp_content->video_frame_rate ())) {
124 t -= ContentTime::from_frames ((*_reel)->main_picture()->duration(), _dcp_content->video_frame_rate ());
132 list<ContentTimePeriod>
133 DCPDecoder::subtitles_during (ContentTimePeriod, bool starting) const
135 return list<ContentTimePeriod> ();