X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fexport_format_specification.cc;h=17ce59933dc96631624e97ba51152331f2dcf4eb;hb=5fa05b403ca21a6573d07b921dc14f0769dc9fc7;hp=bf2585a28113a79b5d79bd94decaa54a9829a345;hpb=75ede0dd6bda0136aef612b0e427ae25b208d0d0;p=ardour.git

diff --git a/libs/ardour/export_format_specification.cc b/libs/ardour/export_format_specification.cc
index bf2585a281..17ce59933d 100644
--- a/libs/ardour/export_format_specification.cc
+++ b/libs/ardour/export_format_specification.cc
@@ -20,24 +20,35 @@
 
 #include "ardour/export_format_specification.h"
 
-#include <sstream>
-
 #include "ardour/export_format_compatibility.h"
 #include "ardour/export_formats.h"
 #include "ardour/session.h"
+#include "ardour/types_convert.h"
 
 #include "pbd/error.h"
 #include "pbd/xml++.h"
 #include "pbd/enumwriter.h"
-#include "pbd/convert.h"
-
-#include "i18n.h"
+#include "pbd/enum_convert.h"
+#include "pbd/string_convert.h"
+#include "pbd/types_convert.h"
+
+#include "pbd/i18n.h"
+
+namespace PBD {
+	DEFINE_ENUM_CONVERT (ARDOUR::ExportFormatBase::FormatId)
+	DEFINE_ENUM_CONVERT (ARDOUR::ExportFormatBase::SampleRate)
+	DEFINE_ENUM_CONVERT (ARDOUR::ExportFormatBase::SampleFormat)
+	DEFINE_ENUM_CONVERT (ARDOUR::ExportFormatBase::DitherType)
+	DEFINE_ENUM_CONVERT (ARDOUR::ExportFormatBase::SRCQuality)
+	DEFINE_ENUM_CONVERT (ARDOUR::ExportFormatBase::Type)
+}
 
 namespace ARDOUR
 {
 
 using namespace PBD;
 using std::string;
+using std::list;
 
 ExportFormatSpecification::Time &
 ExportFormatSpecification::Time::operator= (AnyTime const & other)
@@ -46,11 +57,11 @@ ExportFormatSpecification::Time::operator= (AnyTime const & other)
 	return *this;
 }
 
-framecnt_t
-ExportFormatSpecification::Time::get_frames_at (framepos_t position, framecnt_t target_rate) const
+samplecnt_t
+ExportFormatSpecification::Time::get_samples_at (samplepos_t position, samplecnt_t target_rate) const
 {
-	framecnt_t duration = session.any_duration_to_frames (position, *this);
-	return ((double) target_rate / session.frame_rate()) * duration + 0.5;
+	samplecnt_t duration = session.any_duration_to_samples (position, *this);
+	return ((double) target_rate / session.sample_rate()) * duration + 0.5;
 }
 
 XMLNode &
@@ -59,25 +70,25 @@ ExportFormatSpecification::Time::get_state ()
 
 	XMLNode * node = new XMLNode ("Duration");
 
-	node->add_property ("format", enum_2_string (type));
+	node->set_property ("format", type);
 
 	switch (type) {
 	  case Timecode:
-		node->add_property ("hours", to_string (timecode.hours, std::dec));
-		node->add_property ("minutes", to_string (timecode.minutes, std::dec));
-		node->add_property ("seconds", to_string (timecode.seconds, std::dec));
-		node->add_property ("frames", to_string (timecode.frames, std::dec));
+		node->set_property ("hours", timecode.hours);
+		node->set_property ("minutes", timecode.minutes);
+		node->set_property ("seconds", timecode.seconds);
+		node->set_property ("frames", timecode.frames);
 		break;
 	  case BBT:
-		node->add_property ("bars", to_string (bbt.bars, std::dec));
-		node->add_property ("beats", to_string (bbt.beats, std::dec));
-		node->add_property ("ticks", to_string (bbt.ticks, std::dec));
+		node->set_property ("bars", bbt.bars);
+		node->set_property ("beats", bbt.beats);
+		node->set_property ("ticks", bbt.ticks);
 		break;
-	  case Frames:
-		node->add_property ("frames", to_string (frames, std::dec));
+	  case Samples:
+		node->set_property ("samples", samples);
 		break;
 	  case Seconds:
-		node->add_property ("seconds", to_string (seconds, std::dec));
+		node->set_property ("seconds", seconds);
 		break;
 	}
 
@@ -87,63 +98,32 @@ ExportFormatSpecification::Time::get_state ()
 int
 ExportFormatSpecification::Time::set_state (const XMLNode & node)
 {
-	XMLProperty const * prop;
-
-	prop = node.property ("format");
-
-	if (!prop) { return -1; }
-
-	type = (Type) string_2_enum (prop->value(), Type);
+	if (!node.get_property ("format", type)) {
+		return -1;
+	}
 
 	switch (type) {
-	  case Timecode:
-		if ((prop = node.property ("hours"))) {
-			timecode.hours = atoi (prop->value());
-		}
-
-		if ((prop = node.property ("minutes"))) {
-			timecode.minutes = atoi (prop->value());
-		}
-
-		if ((prop = node.property ("seconds"))) {
-			timecode.seconds = atoi (prop->value());
-		}
-
-		if ((prop = node.property ("frames"))) {
-			timecode.frames = atoi (prop->value());
-		}
-
+	case Timecode:
+		node.get_property ("hours", timecode.hours);
+		node.get_property ("minutes", timecode.minutes);
+		node.get_property ("seconds", timecode.seconds);
+		node.get_property ("frames", timecode.frames);
 		break;
 
-	  case BBT:
-		if ((prop = node.property ("bars"))) {
-			bbt.bars = atoi (prop->value());
-		}
-
-		if ((prop = node.property ("beats"))) {
-			bbt.beats = atoi (prop->value());
-		}
-
-		if ((prop = node.property ("ticks"))) {
-			bbt.ticks = atoi (prop->value());
-		}
-
+	case BBT:
+		node.get_property ("bars", bbt.bars);
+		node.get_property ("beats", bbt.beats);
+		node.get_property ("ticks", bbt.ticks);
 		break;
 
-	  case Frames:
-		if ((prop = node.property ("frames"))) {
-			std::istringstream iss (prop->value());
-			iss >> frames;
-		}
-
+	case Samples:
+		node.get_property ("samples", samples);
 		break;
 
-	  case Seconds:
-		if ((prop = node.property ("seconds"))) {
-			seconds = atof (prop->value());
-		}
-
+	case Seconds:
+		node.get_property ("seconds", seconds);
 		break;
+
 	}
 
 	return 0;
@@ -166,7 +146,17 @@ ExportFormatSpecification::ExportFormatSpecification (Session & s)
 	, _silence_end (s)
 
 	, _normalize (false)
-	, _normalize_target (1.0)
+	, _normalize_loudness (false)
+	, _normalize_dbfs (GAIN_COEFF_UNITY)
+	, _normalize_lufs (-23)
+	, _normalize_dbtp (-1)
+	, _with_toc (false)
+	, _with_cue (false)
+	, _with_mp4chaps (false)
+	, _soundcloud_upload (false)
+	, _command ("")
+	, _analyse (true)
+	, _codec_quality (-3)
 {
 	format_ids.insert (F_None);
 	endiannesses.insert (E_FileDefault);
@@ -177,8 +167,32 @@ ExportFormatSpecification::ExportFormatSpecification (Session & s)
 
 ExportFormatSpecification::ExportFormatSpecification (Session & s, XMLNode const & state)
 	: session (s)
+
+	, has_sample_format (false)
+	, supports_tagging (false)
+	, _has_broadcast_info (false)
+	, _channel_limit (0)
+	, _dither_type (D_None)
+	, _src_quality (SRC_SincBest)
+	, _tag (true)
+
+	, _trim_beginning (false)
 	, _silence_beginning (s)
+	, _trim_end (false)
 	, _silence_end (s)
+
+	, _normalize (false)
+	, _normalize_loudness (false)
+	, _normalize_dbfs (GAIN_COEFF_UNITY)
+	, _normalize_lufs (-23)
+	, _normalize_dbtp (-1)
+	, _with_toc (false)
+	, _with_cue (false)
+	, _with_mp4chaps (false)
+	, _soundcloud_upload (false)
+	, _command ("")
+	, _analyse (true)
+	, _codec_quality (-3)
 {
 	_silence_beginning.type = Time::Timecode;
 	_silence_end.type = Time::Timecode;
@@ -186,13 +200,20 @@ ExportFormatSpecification::ExportFormatSpecification (Session & s, XMLNode const
 	set_state (state);
 }
 
-ExportFormatSpecification::ExportFormatSpecification (ExportFormatSpecification const & other)
+ExportFormatSpecification::ExportFormatSpecification (ExportFormatSpecification const & other, bool modify_name)
 	: ExportFormatBase(other)
 	, session (other.session)
 	, _silence_beginning (other.session)
 	, _silence_end (other.session)
+	, _soundcloud_upload (false)
+	, _analyse (other._analyse)
+	, _codec_quality (other._codec_quality)
 {
-	set_name (other.name() + " (copy)");
+	if (modify_name) {
+		set_name (other.name() + " (copy)");
+	} else {
+		set_name (other.name());
+	}
 
 	_format_name = other._format_name;
 	has_sample_format = other.has_sample_format;
@@ -213,13 +234,16 @@ ExportFormatSpecification::ExportFormatSpecification (ExportFormatSpecification
 	set_trim_beginning (other.trim_beginning());
 	set_trim_end (other.trim_end());
 	set_normalize (other.normalize());
-	set_normalize_target (other.normalize_target());
+	set_normalize_loudness (other.normalize_loudness());
+	set_normalize_dbfs (other.normalize_dbfs());
+	set_normalize_lufs (other.normalize_lufs());
+	set_normalize_dbtp (other.normalize_dbtp());
 
 	set_tag (other.tag());
 
 	set_silence_beginning (other.silence_beginning_time());
 	set_silence_end (other.silence_end_time());
-	
+
 	set_extension(other.extension());
 }
 
@@ -233,53 +257,65 @@ ExportFormatSpecification::get_state ()
 	XMLNode * node;
 	XMLNode * root = new XMLNode ("ExportFormatSpecification");
 
-	root->add_property ("name", _name);
-	root->add_property ("id", _id.to_s());
+	root->set_property ("name", _name);
+	root->set_property ("id", _id.to_s());
+	root->set_property ("with-cue", _with_cue);
+	root->set_property ("with-toc", _with_toc);
+	root->set_property ("with-mp4chaps", _with_mp4chaps);
+	root->set_property ("command", _command);
+	root->set_property ("analyse", _analyse);
+	root->set_property ("soundcloud-upload", _soundcloud_upload);
 
 	node = root->add_child ("Encoding");
-	node->add_property ("id", enum_2_string (format_id()));
-	node->add_property ("type", enum_2_string (type()));
-	node->add_property ("extension", extension());
-	node->add_property ("name", _format_name);
-	node->add_property ("has-sample-format", has_sample_format ? "true" : "false");
-	node->add_property ("channel-limit", to_string (_channel_limit, std::dec));
+	node->set_property ("id", format_id());
+	node->set_property ("type", type());
+	node->set_property ("extension", extension());
+	node->set_property ("name", _format_name);
+	node->set_property ("has-sample-format", has_sample_format);
+	node->set_property ("channel-limit", _channel_limit);
 
 	node = root->add_child ("SampleRate");
-	node->add_property ("rate", to_string (sample_rate(), std::dec));
+	node->set_property ("rate", sample_rate());
 
 	node = root->add_child ("SRCQuality");
-	node->add_property ("quality", enum_2_string (src_quality()));
+	node->set_property ("quality", src_quality());
+
+	node = root->add_child ("CodecQuality");
+	node->set_property ("quality", codec_quality());
 
 	XMLNode * enc_opts = root->add_child ("EncodingOptions");
 
-	add_option (enc_opts, "sample-format", enum_2_string (sample_format()));
-	add_option (enc_opts, "dithering", enum_2_string (dither_type()));
-	add_option (enc_opts, "tag-metadata", _tag ? "true" : "false");
-	add_option (enc_opts, "tag-support", supports_tagging ? "true" : "false");
-	add_option (enc_opts, "broadcast-info", _has_broadcast_info ? "true" : "false");
+	add_option (enc_opts, "sample-format", to_string(sample_format()));
+	add_option (enc_opts, "dithering", to_string (dither_type()));
+	add_option (enc_opts, "tag-metadata", to_string (_tag));
+	add_option (enc_opts, "tag-support", to_string (supports_tagging));
+	add_option (enc_opts, "broadcast-info", to_string (_has_broadcast_info));
 
 	XMLNode * processing = root->add_child ("Processing");
 
 	node = processing->add_child ("Normalize");
-	node->add_property ("enabled", normalize() ? "true" : "false");
-	node->add_property ("target", to_string (normalize_target(), std::dec));
+	node->set_property ("enabled", normalize());
+	node->set_property ("loudness", normalize_loudness());
+	node->set_property ("dbfs", normalize_dbfs());
+	node->set_property ("lufs", normalize_lufs());
+	node->set_property ("dbtp", normalize_dbtp());
 
 	XMLNode * silence = processing->add_child ("Silence");
 	XMLNode * start = silence->add_child ("Start");
 	XMLNode * end = silence->add_child ("End");
 
 	node = start->add_child ("Trim");
-	node->add_property ("enabled", trim_beginning() ? "true" : "false");
+	node->set_property ("enabled", trim_beginning());
 
 	node = start->add_child ("Add");
-	node->add_property ("enabled", _silence_beginning.not_zero() ? "true" : "false");
+	node->set_property ("enabled", _silence_beginning.not_zero());
 	node->add_child_nocopy (_silence_beginning.get_state());
 
 	node = end->add_child ("Trim");
-	node->add_property ("enabled", trim_end() ? "true" : "false");
+	node->set_property ("enabled", trim_end());
 
 	node = end->add_child ("Add");
-	node->add_property ("enabled", _silence_end.not_zero() ? "true" : "false");
+	node->set_property ("enabled", _silence_end.not_zero());
 	node->add_child_nocopy (_silence_end.get_state());
 
 	return *root;
@@ -288,56 +324,74 @@ ExportFormatSpecification::get_state ()
 int
 ExportFormatSpecification::set_state (const XMLNode & root)
 {
-	XMLProperty const * prop;
 	XMLNode const * child;
-	string value;
+	string str;
+
+	root.get_property ("name", _name);
 
-	if ((prop = root.property ("name"))) {
-		_name = prop->value();
+	if (root.get_property ("id", str)) {
+		_id = str;
 	}
 
-	if ((prop = root.property ("id"))) {
-		_id = prop->value();
+	if (!root.get_property ("with-cue", _with_cue)) {
+		_with_cue = false;
 	}
 
-	/* Encoding and SRC */
+	if (!root.get_property ("with-toc", _with_toc)) {
+		_with_toc = false;
+	}
 
-	if ((child = root.child ("Encoding"))) {
-		if ((prop = child->property ("id"))) {
-			set_format_id ((FormatId) string_2_enum (prop->value(), FormatId));
-		}
+	if (!root.get_property ("with-mp4chaps", _with_mp4chaps)) {
+		_with_mp4chaps = false;
+	}
 
-		if ((prop = child->property ("type"))) {
-			set_type ((Type) string_2_enum (prop->value(), Type));
-		}
+	if (!root.get_property ("command", _command)) {
+		_command = "";
+	}
 
-		if ((prop = child->property ("extension"))) {
-			set_extension (prop->value());
-		}
+	if (!root.get_property ("analyse", _analyse)) {
+		_analyse = false;
+	}
 
-		if ((prop = child->property ("name"))) {
-			_format_name = prop->value();
+	if (!root.get_property ("soundcloud-upload", _soundcloud_upload)) {
+		_soundcloud_upload = false;
+	}
+
+	/* Encoding and SRC */
+
+	if ((child = root.child ("Encoding"))) {
+		FormatId fid;
+		if (child->get_property ("id", fid)) {
+			set_format_id (fid);
 		}
 
-		if ((prop = child->property ("has-sample-format"))) {
-			has_sample_format = !prop->value().compare ("true");
+		ExportFormatBase::Type type;
+		if (child->get_property ("type", type)) {
+			set_type (type);
 		}
 
-		if ((prop = child->property ("channel-limit"))) {
-			_channel_limit = atoi (prop->value());
+		if (child->get_property ("extension", str)) {
+			set_extension (str);
 		}
+
+		child->get_property ("name", _format_name);
+		child->get_property ("has-sample-format", has_sample_format);
+		child->get_property ("channel-limit", _channel_limit);
 	}
 
 	if ((child = root.child ("SampleRate"))) {
-		if ((prop = child->property ("rate"))) {
-			set_sample_rate ( (SampleRate) string_2_enum (prop->value(), SampleRate));
+		SampleRate rate;
+		if (child->get_property ("rate", rate)) {
+			set_sample_rate (rate);
 		}
 	}
 
 	if ((child = root.child ("SRCQuality"))) {
-		if ((prop = child->property ("quality"))) {
-			_src_quality = (SRCQuality) string_2_enum (prop->value(), SRCQuality);
-		}
+		child->get_property ("quality", _src_quality);
+	}
+
+	if ((child = root.child ("CodecQuality"))) {
+		child->get_property ("quality", _codec_quality);
 	}
 
 	/* Encoding options */
@@ -345,9 +399,9 @@ ExportFormatSpecification::set_state (const XMLNode & root)
 	if ((child = root.child ("EncodingOptions"))) {
 		set_sample_format ((SampleFormat) string_2_enum (get_option (child, "sample-format"), SampleFormat));
 		set_dither_type ((DitherType) string_2_enum (get_option (child, "dithering"), DitherType));
-		set_tag (!(get_option (child, "tag-metadata").compare ("true")));
-		supports_tagging = (!(get_option (child, "tag-support").compare ("true")));
-		_has_broadcast_info = (!(get_option (child, "broadcast-info").compare ("true")));
+		set_tag (string_to<bool>(get_option (child, "tag-metadata")));
+		supports_tagging = string_to<bool>(get_option (child, "tag-support"));
+		_has_broadcast_info = string_to<bool>(get_option (child, "broadcast-info"));
 	}
 
 	/* Processing */
@@ -356,13 +410,13 @@ ExportFormatSpecification::set_state (const XMLNode & root)
 	if (!proc) { std::cerr << X_("Could not load processing for export format") << std::endl; return -1; }
 
 	if ((child = proc->child ("Normalize"))) {
-		if ((prop = child->property ("enabled"))) {
-			_normalize = (!prop->value().compare ("true"));
-		}
-
-		if ((prop = child->property ("target"))) {
-			_normalize_target = atof (prop->value());
-		}
+		child->get_property ("enabled", _normalize);
+		// old formats before ~ 4.7-930ish
+		child->get_property ("target", _normalize_dbfs);
+		child->get_property ("loudness", _normalize_loudness);
+		child->get_property ("dbfs", _normalize_dbfs);
+		child->get_property ("lufs", _normalize_lufs);
+		child->get_property ("dbtp", _normalize_dbtp);
 	}
 
 	XMLNode const * silence = proc->child ("Silence");
@@ -375,40 +429,33 @@ ExportFormatSpecification::set_state (const XMLNode & root)
 	/* Silence start */
 
 	if ((child = start->child ("Trim"))) {
-		if ((prop = child->property ("enabled"))) {
-			_trim_beginning = (!prop->value().compare ("true"));
-		}
+		child->get_property ("enabled", _trim_beginning);
 	}
 
+	bool enabled;
 	if ((child = start->child ("Add"))) {
-		if ((prop = child->property ("enabled"))) {
-			if (!prop->value().compare ("true")) {
-				if ((child = child->child ("Duration"))) {
-					_silence_beginning.set_state (*child);
-				}
-			} else {
-				_silence_beginning.type = Time::Timecode;
+		if (child->get_property ("enabled", enabled) && enabled) {
+			if ((child = child->child ("Duration"))) {
+				_silence_beginning.set_state (*child);
 			}
+		} else {
+			_silence_beginning.type = Time::Timecode;
 		}
 	}
 
 	/* Silence end */
 
 	if ((child = end->child ("Trim"))) {
-		if ((prop = child->property ("enabled"))) {
-			_trim_end = (!prop->value().compare ("true"));
-		}
+		child->get_property ("enabled", _trim_end);
 	}
 
 	if ((child = end->child ("Add"))) {
-		if ((prop = child->property ("enabled"))) {
-			if (!prop->value().compare ("true")) {
-				if ((child = child->child ("Duration"))) {
-					_silence_end.set_state (*child);
-				}
-			} else {
-				_silence_end.type = Time::Timecode;
+		if (child->get_property ("enabled", enabled) && enabled) {
+			if ((child = child->child ("Duration"))) {
+				_silence_end.set_state (*child);
 			}
+		} else {
+				_silence_end.type = Time::Timecode;
 		}
 	}
 
@@ -504,56 +551,91 @@ ExportFormatSpecification::set_format (boost::shared_ptr<ExportFormat> format)
 }
 
 string
-ExportFormatSpecification::description ()
+ExportFormatSpecification::description (bool include_name)
 {
-	string desc;
-
-	desc = _name + ": ";
+	list<string> components;
 
 	if (_normalize) {
-		desc += _("normalize, ");
+		if (_normalize_loudness) {
+			components.push_back (_("normalize loudness"));
+		} else {
+			components.push_back (_("normalize peak"));
+		}
 	}
 
 	if (_trim_beginning && _trim_end) {
-		desc += _("trim, ");
+		components.push_back ( _("trim"));
 	} else if (_trim_beginning) {
-		desc += _("trim start, ");
+		components.push_back (_("trim start"));
 	} else if (_trim_end) {
-		desc += "trim end, ";
+		components.push_back (_("trim end"));
 	}
 
-	desc += _format_name + ", ";
+	if (_format_name != "") {
+		components.push_back (_format_name);
+	}
 
 	if (has_sample_format) {
-		desc += HasSampleFormat::get_sample_format_name (sample_format())  + ", ";
+		components.push_back (HasSampleFormat::get_sample_format_name (sample_format()));
 	}
 
 	switch (sample_rate()) {
-	  case SR_22_05:
-		desc += "22,5 kHz";
+	case SR_8:
+		components.push_back ("8 kHz");
+		break;
+	case SR_22_05:
+		components.push_back ("22,5 kHz");
 		break;
-	  case SR_44_1:
-		desc += "44,1 kHz";
+	case SR_44_1:
+		components.push_back ("44,1 kHz");
 		break;
-	  case SR_48:
-		desc += "48 kHz";
+	case SR_48:
+		components.push_back ("48 kHz");
 		break;
-	  case SR_88_2:
-		desc += "88,2 kHz";
+	case SR_88_2:
+		components.push_back ("88,2 kHz");
 		break;
-	  case SR_96:
-		desc += "96 kHz";
+	case SR_96:
+		components.push_back ("96 kHz");
 		break;
-	  case SR_192:
-		desc += "192 kHz";
+	case SR_176_4:
+		components.push_back ("176.4 kHz");
 		break;
-	  case SR_Session:
-		desc += _("Session rate");
+	case SR_192:
+		components.push_back ("192 kHz");
 		break;
-	  case SR_None:
+	case SR_Session:
+		components.push_back (_("Session rate"));
 		break;
+	case SR_None:
+		break;
+	}
+
+	if (_with_toc) {
+		components.push_back ("TOC");
+	}
+
+	if (_with_cue) {
+		components.push_back ("CUE");
 	}
 
+	if (_with_mp4chaps) {
+		components.push_back ("MP4ch");
+	}
+
+	if (!_command.empty()) {
+		components.push_back ("+");
+	}
+
+	string desc;
+	if (include_name) {
+		desc = _name + ": ";
+	}
+
+	for (list<string>::const_iterator it = components.begin(); it != components.end(); ++it) {
+		if (it != components.begin()) { desc += ", "; }
+		desc += *it;
+	}
 	return desc;
 }
 
@@ -561,8 +643,8 @@ void
 ExportFormatSpecification::add_option (XMLNode * node, std::string const & name, std::string const & value)
 {
 	node = node->add_child ("Option");
-	node->add_property ("name", name);
-	node->add_property ("value", value);
+	node->set_property ("name", name);
+	node->set_property ("value", value);
 }
 
 std::string
@@ -571,11 +653,10 @@ ExportFormatSpecification::get_option (XMLNode const * node, std::string const &
 	XMLNodeList list (node->children ("Option"));
 
 	for (XMLNodeList::iterator it = list.begin(); it != list.end(); ++it) {
-		XMLProperty * prop = (*it)->property ("name");
-		if (prop && !name.compare (prop->value())) {
-			prop = (*it)->property ("value");
-			if (prop) {
-				return prop->value();
+		std::string str;
+		if ((*it)->get_property ("name", str) && name == str) {
+			if ((*it)->get_property ("value", str)) {
+				return str;
 			}
 		}
 	}