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livetrax/libs/ardour/audio_playlist_importer.cc

269 lines
7.2 KiB
C++

/*
Copyright (C) 2008 Paul Davis
Author: Sakari Bergen
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 "ardour/audio_playlist_importer.h"
#include <sstream>
#include "pbd/failed_constructor.h"
#include "pbd/compose.h"
#include "pbd/error.h"
#include "ardour/audio_region_importer.h"
#include "ardour/session.h"
#include "ardour/playlist_factory.h"
#include "ardour/session_playlists.h"
#include "i18n.h"
using namespace std;
using namespace PBD;
using namespace ARDOUR;
/**** Handler ***/
AudioPlaylistImportHandler::AudioPlaylistImportHandler (XMLTree const & source, Session & session, AudioRegionImportHandler & region_handler, const char * nodename) :
ElementImportHandler (source, session),
region_handler (region_handler)
{
XMLNode const * root = source.root();
XMLNode const * playlists;
if (!(playlists = root->child (nodename))) {
throw failed_constructor();
}
XMLNodeList const & pl_children = playlists->children();
for (XMLNodeList::const_iterator it = pl_children.begin(); it != pl_children.end(); ++it) {
const XMLProperty* type = (*it)->property("type");
if ( !type || type->value() == "audio" ) {
try {
elements.push_back (ElementPtr ( new AudioPlaylistImporter (source, session, *this, **it)));
} catch (failed_constructor err) {
set_dirty();
}
}
}
}
string
AudioPlaylistImportHandler::get_info () const
{
return _("Audio Playlists");
}
void
AudioPlaylistImportHandler::get_regions (XMLNode const & node, ElementList & list) const
{
region_handler.create_regions_from_children (node, list);
}
void
AudioPlaylistImportHandler::update_region_id (XMLProperty* id_prop)
{
PBD::ID old_id (id_prop->value());
PBD::ID new_id (region_handler.get_new_id (old_id));
id_prop->set_value (new_id.to_s());
}
void
AudioPlaylistImportHandler::playlists_by_diskstream (PBD::ID const & id, PlaylistList & list) const
{
for (ElementList::const_iterator it = elements.begin(); it != elements.end(); ++it) {
boost::shared_ptr<AudioPlaylistImporter> pl = boost::dynamic_pointer_cast<AudioPlaylistImporter> (*it);
if (pl && pl->orig_diskstream() == id) {
list.push_back (PlaylistPtr (new AudioPlaylistImporter (*pl)));
}
}
}
/*** AudioPlaylistImporter ***/
AudioPlaylistImporter::AudioPlaylistImporter (XMLTree const & source, Session & session, AudioPlaylistImportHandler & handler, XMLNode const & node) :
ElementImporter (source, session),
handler (handler),
orig_node (node),
xml_playlist (node),
diskstream_id ("0")
{
bool ds_ok = false;
populate_region_list ();
// Parse XML
XMLPropertyList const & props = xml_playlist.properties();
for (XMLPropertyList::const_iterator it = props.begin(); it != props.end(); ++it) {
string prop = (*it)->name();
if (!prop.compare("type") || !prop.compare("frozen")) {
// All ok
} else if (!prop.compare("name")) {
name = (*it)->value();
} else if (!prop.compare("orig-diskstream-id")) {
orig_diskstream_id = (*it)->value();
ds_ok = true;
} else {
std::cerr << string_compose (X_("AudioPlaylistImporter did not recognise XML-property \"%1\""), prop) << endmsg;
}
}
if (!ds_ok) {
error << string_compose (X_("AudioPlaylistImporter (%1): did not find XML-property \"orig_diskstream_id\" which is mandatory"), name) << endmsg;
throw failed_constructor();
}
}
AudioPlaylistImporter::AudioPlaylistImporter (AudioPlaylistImporter const & other) :
ElementImporter (other.source, other.session),
handler (other.handler),
orig_node (other.orig_node),
xml_playlist (other.xml_playlist),
orig_diskstream_id (other.orig_diskstream_id)
{
populate_region_list ();
}
AudioPlaylistImporter::~AudioPlaylistImporter ()
{
}
string
AudioPlaylistImporter::get_info () const
{
XMLNodeList children = xml_playlist.children();
unsigned int regions = 0;
std::ostringstream oss;
for (XMLNodeIterator it = children.begin(); it != children.end(); it++) {
if ((*it)->name() == "Region") {
++regions;
}
}
oss << regions << " ";
if (regions == 1) {
oss << _("region");
} else {
oss << _("regions");
}
return oss.str();
}
bool
AudioPlaylistImporter::_prepare_move ()
{
// Rename
while (session.playlists->by_name (name) || !handler.check_name (name)) {
std::pair<bool, string> rename_pair = *Rename (_("A playlist with this name already exists, please rename it."), name);
if (!rename_pair.first) {
return false;
}
name = rename_pair.second;
}
XMLProperty* p = xml_playlist.property ("name");
if (!p) {
error << _("badly-formed XML in imported playlist") << endmsg;
return false;
}
p->set_value (name);
handler.add_name (name);
return true;
}
void
AudioPlaylistImporter::_cancel_move ()
{
handler.remove_name (name);
}
void
AudioPlaylistImporter::_move ()
{
boost::shared_ptr<Playlist> playlist;
// Update diskstream id
xml_playlist.property ("orig-diskstream-id")->set_value (diskstream_id.to_s());
// Update region XML in playlist and prepare sources
xml_playlist.remove_nodes("Region");
for (RegionList::iterator it = regions.begin(); it != regions.end(); ++it) {
xml_playlist.add_child_copy ((*it)->get_xml());
(*it)->add_sources_to_session();
if ((*it)->broken()) {
handler.set_dirty();
set_broken();
return; // TODO clean up?
}
}
// Update region ids in crossfades
XMLNodeList crossfades = xml_playlist.children("Crossfade");
for (XMLNodeIterator it = crossfades.begin(); it != crossfades.end(); ++it) {
XMLProperty* in = (*it)->property("in");
XMLProperty* out = (*it)->property("out");
if (!in || !out) {
error << string_compose (X_("AudioPlaylistImporter (%1): did not find the \"in\" or \"out\" property from a crossfade"), name) << endmsg;
continue; // or fatal?
}
handler.update_region_id (in);
handler.update_region_id (out);
// rate convert length and position
XMLProperty* length = (*it)->property("length");
if (length) {
length->set_value (rate_convert_samples (length->value()));
}
XMLProperty* position = (*it)->property("position");
if (position) {
position->set_value (rate_convert_samples (position->value()));
}
}
// Create playlist
playlist = PlaylistFactory::create (session, xml_playlist, false, true);
}
void
AudioPlaylistImporter::set_diskstream (PBD::ID const & id)
{
diskstream_id = id;
}
void
AudioPlaylistImporter::populate_region_list ()
{
ElementImportHandler::ElementList elements;
handler.get_regions (orig_node, elements);
for (ElementImportHandler::ElementList::iterator it = elements.begin(); it != elements.end(); ++it) {
regions.push_back (boost::dynamic_pointer_cast<AudioRegionImporter> (*it));
}
}
string
UnusedAudioPlaylistImportHandler::get_info () const
{
return _("Audio Playlists (unused)");
}