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livetrax/libs/ardour/filter.cc

149 lines
4.2 KiB
C++

/*
Copyright (C) 2004-2007 Paul Davis
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 <time.h>
#include <cerrno>
#include "pbd/basename.h"
#include "ardour/analyser.h"
#include "ardour/audiofilesource.h"
#include "ardour/audioregion.h"
#include "ardour/filter.h"
#include "ardour/region.h"
#include "ardour/region_factory.h"
#include "ardour/session.h"
#include "ardour/smf_source.h"
#include "ardour/source_factory.h"
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
int
Filter::make_new_sources (boost::shared_ptr<Region> region, SourceList& nsrcs, string suffix)
{
vector<string> names = region->master_source_names();
assert (region->n_channels() <= names.size());
for (uint32_t i = 0; i < region->n_channels(); ++i) {
string name = PBD::basename_nosuffix (names[i]);
/* remove any existing version of suffix by assuming it starts
with some kind of "special" character.
*/
if (!suffix.empty()) {
string::size_type pos = name.find (suffix[0]);
if (pos != string::npos && pos > 2) {
name = name.substr (0, pos - 1);
}
}
string path = session.new_audio_source_path (name, region->n_channels(), i, false, false);
if (path.empty()) {
error << string_compose (_("filter: error creating name for new file based on %1"), region->name())
<< endmsg;
return -1;
}
try {
nsrcs.push_back (boost::dynamic_pointer_cast<Source> (
SourceFactory::createWritable (region->data_type(), session,
path, false, session.frame_rate())));
}
catch (failed_constructor& err) {
error << string_compose (_("filter: error creating new file %1 (%2)"), path, strerror (errno)) << endmsg;
return -1;
}
}
return 0;
}
int
Filter::finish (boost::shared_ptr<Region> region, SourceList& nsrcs, string region_name)
{
/* update headers on new sources */
time_t xnow;
struct tm* now;
time (&xnow);
now = localtime (&xnow);
/* this is ugly. */
for (SourceList::iterator si = nsrcs.begin(); si != nsrcs.end(); ++si) {
boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(*si);
if (afs) {
afs->done_with_peakfile_writes ();
afs->update_header (region->position(), *now, xnow);
afs->mark_immutable ();
}
boost::shared_ptr<SMFSource> smfs = boost::dynamic_pointer_cast<SMFSource>(*si);
if (smfs) {
smfs->set_timeline_position (region->position());
smfs->flush ();
}
/* now that there is data there, requeue the file for analysis */
Analyser::queue_source_for_analysis (*si, false);
}
/* create a new region */
if (region_name.empty()) {
region_name = RegionFactory::new_region_name (region->name());
}
results.clear ();
PropertyList plist;
plist.add (Properties::start, 0);
plist.add (Properties::length, region->length());
plist.add (Properties::name, region_name);
plist.add (Properties::whole_file, true);
plist.add (Properties::position, region->position());
boost::shared_ptr<Region> r = RegionFactory::create (nsrcs, plist);
boost::shared_ptr<AudioRegion> audio_region = boost::dynamic_pointer_cast<AudioRegion> (region);
boost::shared_ptr<AudioRegion> audio_r = boost::dynamic_pointer_cast<AudioRegion> (r);
if (audio_region && audio_r) {
audio_r->set_scale_amplitude (audio_region->scale_amplitude());
audio_r->set_fade_in_active (audio_region->fade_in_active ());
audio_r->set_fade_in (audio_region->fade_in ());
audio_r->set_fade_out_active (audio_region->fade_out_active ());
audio_r->set_fade_out (audio_region->fade_out ());
*(audio_r->envelope()) = *(audio_region->envelope ());
}
results.push_back (r);
return 0;
}