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Break out API to create readables from files

This commit is contained in:
Robin Gareus 2020-01-31 16:26:41 +01:00
parent 34c4602e61
commit 56c1fa0c90
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
4 changed files with 80 additions and 34 deletions

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@ -25,11 +25,15 @@
namespace ARDOUR {
class Session;
class LIBARDOUR_API Readable {
public:
Readable () {}
public:
virtual ~Readable() {}
static std::vector<boost::shared_ptr<Readable> >
load (Session&, std::string const&);
virtual samplecnt_t read (Sample*, samplepos_t pos, samplecnt_t cnt, int channel) const = 0;
virtual samplecnt_t readable_length() const = 0;
virtual uint32_t n_channels () const = 0;

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@ -24,6 +24,7 @@
#include "ardour/audioengine.h"
#include "ardour/audiofilesource.h"
#include "ardour/convolver.h"
#include "ardour/readable.h"
#include "ardour/session.h"
#include "ardour/srcfilesource.h"
#include "ardour/source_factory.h"
@ -48,44 +49,18 @@ Convolver::Convolver (
, _offset (0)
, _configured (false)
{
ARDOUR::SoundFileInfo sf_info;
std::string error_msg;
if (!AudioFileSource::get_soundfile_info (path, sf_info, error_msg)) {
PBD::error << string_compose(_("Convolver: cannot open IR \"%1\": %2"), path, error_msg) << endmsg;
throw failed_constructor ();
}
if (sf_info.length > 0x1000000 /*2^24*/) {
PBD::error << string_compose(_("Convolver: IR \"%1\" file too long."), path) << endmsg;
throw failed_constructor ();
}
for (unsigned int n = 0; n < sf_info.channels; ++n) {
try {
boost::shared_ptr<AudioFileSource> afs;
afs = boost::dynamic_pointer_cast<AudioFileSource> (
SourceFactory::createExternal (DataType::AUDIO, _session,
path, n,
Source::Flag (ARDOUR::AudioFileSource::NoPeakFile), false));
if (afs->sample_rate() != _session.nominal_sample_rate()) {
boost::shared_ptr<SrcFileSource> sfs (new SrcFileSource(_session, afs, ARDOUR::SrcBest));
_readables.push_back(sfs);
} else {
_readables.push_back (afs);
}
} catch (failed_constructor& err) {
PBD::error << string_compose(_("Convolver: Could not open IR \"%1\"."), path) << endmsg;
throw failed_constructor ();
}
}
_readables = Readable::load (_session, path);
if (_readables.empty ()) {
PBD::error << string_compose (_("Convolver: IR \"%1\" no usable audio-channels sound."), path) << endmsg;
throw failed_constructor ();
}
if (_readables[0]->readable_length () > 0x1000000 /*2^24*/) {
PBD::error << string_compose(_("Convolver: IR \"%1\" file too long."), path) << endmsg;
throw failed_constructor ();
}
AudioEngine::instance ()->BufferSizeChanged.connect_same_thread (*this, boost::bind (&Convolver::reconfigure, this));
reconfigure ();

66
libs/ardour/readable.cc Normal file
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@ -0,0 +1,66 @@
/*
* Copyright (C) 2020 Robin Gareus <robin@gareus.org>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <vector>
#include "pbd/error.h"
#include "ardour/audiofilesource.h"
#include "ardour/readable.h"
#include "ardour/session.h"
#include "ardour/srcfilesource.h"
#include "ardour/source_factory.h"
#include "pbd/i18n.h"
using namespace ARDOUR;
std::vector<boost::shared_ptr<Readable> >
Readable::load (Session& session, std::string const& path)
{
std::vector<boost::shared_ptr<Readable> > readables;
ARDOUR::SoundFileInfo sf_info;
std::string error_msg;
if (!AudioFileSource::get_soundfile_info (path, sf_info, error_msg)) {
PBD::error << string_compose(_("Cannot open File \"%1\": %2"), path, error_msg) << endmsg;
throw failed_constructor ();
}
for (unsigned int n = 0; n < sf_info.channels; ++n) {
try {
boost::shared_ptr<AudioFileSource> afs;
afs = boost::dynamic_pointer_cast<AudioFileSource> (
SourceFactory::createExternal (DataType::AUDIO, session,
path, n,
Source::Flag (ARDOUR::AudioFileSource::NoPeakFile), false));
if (afs->sample_rate() != session.nominal_sample_rate()) {
boost::shared_ptr<SrcFileSource> sfs (new SrcFileSource(session, afs, ARDOUR::SrcBest));
readables.push_back(sfs);
} else {
readables.push_back (afs);
}
} catch (failed_constructor& err) {
PBD::error << string_compose(_("Could not read file \"%1\"."), path) << endmsg;
throw failed_constructor ();
}
}
return readables;
}

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@ -181,6 +181,7 @@ libardour_sources = [
'progress.cc',
'quantize.cc',
'rc_configuration.cc',
'readable.cc',
'readonly_control.cc',
'raw_midi_parser.cc',
'recent_sessions.cc',