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/*
Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
This program 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,
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.
*/
#include "dcp_examiner.h"
#include "dcp_content.h"
#include "exceptions.h"
#include "image.h"
#include "config.h"
#include <dcp/dcp.h>
#include <dcp/decrypted_kdm.h>
#include <dcp/cpl.h>
#include <dcp/reel.h>
#include <dcp/reel_picture_asset.h>
#include <dcp/reel_sound_asset.h>
#include <dcp/mono_picture_asset.h>
#include <dcp/mono_picture_frame.h>
#include <dcp/stereo_picture_asset.h>
#include <dcp/stereo_picture_frame.h>
#include <dcp/sound_asset.h>
#include "i18n.h"
using std::list;
using std::cout;
using boost::shared_ptr;
using boost::dynamic_pointer_cast;
DCPExaminer::DCPExaminer (shared_ptr<const DCPContent> content)
: _video_length (0)
, _audio_length (0)
, _has_subtitles (false)
, _encrypted (false)
, _kdm_valid (false)
{
dcp::DCP dcp (content->directory ());
dcp.read ();
if (content->kdm ()) {
dcp.add (dcp::DecryptedKDM (content->kdm().get(), Config::instance()->decryption_chain()->key().get ()));
}
if (dcp.cpls().size() == 0) {
throw DCPError ("No CPLs found in DCP");
} else if (dcp.cpls().size() > 1) {
throw DCPError ("Multiple CPLs found in DCP");
}
_name = dcp.cpls().front()->content_title_text ();
list<shared_ptr<dcp::Reel> > reels = dcp.cpls().front()->reels ();
for (list<shared_ptr<dcp::Reel> >::const_iterator i = reels.begin(); i != reels.end(); ++i) {
if ((*i)->main_picture ()) {
dcp::Fraction const frac = (*i)->main_picture()->frame_rate ();
float const fr = float(frac.numerator) / frac.denominator;
if (!_video_frame_rate) {
_video_frame_rate = fr;
} else if (_video_frame_rate.get() != fr) {
throw DCPError (_("Mismatched frame rates in DCP"));
}
shared_ptr<dcp::PictureAsset> asset = (*i)->main_picture()->asset ();
if (!_video_size) {
_video_size = asset->size ();
} else if (_video_size.get() != asset->size ()) {
throw DCPError (_("Mismatched video sizes in DCP"));
}
_video_length += (*i)->main_picture()->duration();
}
if ((*i)->main_sound ()) {
shared_ptr<dcp::SoundAsset> asset = (*i)->main_sound()->asset ();
if (!_audio_channels) {
_audio_channels = asset->channels ();
} else if (_audio_channels.get() != asset->channels ()) {
throw DCPError (_("Mismatched audio channel counts in DCP"));
}
if (!_audio_frame_rate) {
_audio_frame_rate = asset->sampling_rate ();
} else if (_audio_frame_rate.get() != asset->sampling_rate ()) {
throw DCPError (_("Mismatched audio frame rates in DCP"));
}
_audio_length += (*i)->main_sound()->duration();
}
if ((*i)->main_subtitle ()) {
_has_subtitles = true;
}
}
_encrypted = dcp.encrypted ();
_kdm_valid = true;
/* Check that we can read the first picture frame */
try {
if (!dcp.cpls().empty () && !dcp.cpls().front()->reels().empty ()) {
shared_ptr<dcp::PictureAsset> asset = dcp.cpls().front()->reels().front()->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);
if (mono) {
mono->get_frame(0)->xyz_image ();
} else {
stereo->get_frame(0)->xyz_image (dcp::EYE_LEFT);
}
}
} catch (dcp::DCPReadError& e) {
_kdm_valid = false;
if (_encrypted && content->kdm ()) {
/* XXX: maybe don't use an exception for this */
throw StringError (_("The KDM does not decrypt the DCP. Perhaps it is targeted at the wrong CPL."));
}
}
}
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