Do not use exceptions when scan file error occurs

TODO

@@ -14,6 +14,7 @@
 - handle access rights problems (instead of aborting)
 - add a global play counter for tracks. This will help people to spot most popular files
 - rework the exception process in av/metadata/updater in case of bad files
+- Use the WServer::post method to notify the end of the database scan? (with results?)
 
 [Metadata]
 - OGG metadata -> properly handle metadata nested in the audio stream

src/av/InputFormatContext.cpp

@@ -87,14 +87,17 @@ InputFormatContext::getBestStreamIdx(AVMediaType type, Stream::Idx& index)
 	}
 }
 
-void
+bool
 InputFormatContext::findStreamInfo(void)
 {
 	AvError err = avformat_find_stream_info(native(), NULL);
-	if (err) {
+	if (err)
+	{
 		LMS_LOG(MOD_AV, SEV_ERROR) << "Couldn't find stream information: " << err;
-		throw std::runtime_error("av_find_stream_info failed!");
+		return false;
 	}
+
+	return true;
 }
 
 

src/av/InputFormatContext.hpp

@@ -47,7 +47,7 @@ class InputFormatContext : public FormatContext
 		Dictionary	getMetadata(void);	// metadata access
 
 		// Scan file
-		void findStreamInfo();
+		bool findStreamInfo();
 
 
 		// Get attached pictures

src/database-updater/DatabaseUpdater.cpp

@@ -386,7 +386,9 @@ Updater::processAudioFile( const boost::filesystem::path& file, Stats& stats)
 		}
 
 		MetaData::Items items;
-		_metadataParser.parse(file, items);
+
+		if (!_metadataParser.parse(file, items))
+			return;
 
 		// We estimate this is a audio file if:
 		// - we found a least one audio stream

src/metadata/AvFormat.cpp

@@ -32,154 +32,146 @@
 namespace MetaData
 {
 
-void
+bool
 AvFormat::parse(const boost::filesystem::path& p, Items& items)
 {
 
-	try {
+	Av::InputFormatContext input(p);
 
-		Av::InputFormatContext input(p);
-		input.findStreamInfo(); // needed by input.getDurationSecs
+	if (!input.findStreamInfo())
+		return false;
 
-		std::map<std::string, std::string> metadata;
-		input.getMetadata().get(metadata);
+	std::map<std::string, std::string> metadata;
+	input.getMetadata().get(metadata);
 
-		// HACK or OGG files
-		// If we did not find tags, searched metadata in streams
-		if (metadata.empty())
+	// HACK or OGG files
+	// If we did not find tags, searched metadata in streams
+	if (metadata.empty())
+	{
+		// Get input streams
+		std::vector<Av::Stream> streams = input.getStreams();
+
+		BOOST_FOREACH(Av::Stream& stream, streams)
 		{
-			// Get input streams
-			std::vector<Av::Stream> streams = input.getStreams();
+			stream.getMetadata().get(metadata);
 
-			BOOST_FOREACH(Av::Stream& stream, streams)
+			if (!metadata.empty())
+				break;
+		}
+	}
+
+
+	// Stream info
+	{
+		std::vector<Av::Stream> avStreams = input.getStreams();
+
+		std::vector<AudioStream>	audioStreams;
+		std::vector<VideoStream>	videoStreams;
+		std::vector<SubtitleStream>	subtitleStreams;
+
+		BOOST_FOREACH(Av::Stream& avStream, avStreams)
+		{
+			switch(avStream.getCodecContext().getType())
 			{
-				stream.getMetadata().get(metadata);
+				case AVMEDIA_TYPE_VIDEO:
+					if (!avStream.hasAttachedPic())
+					{
+						VideoStream stream;
+						stream.bitRate = avStream.getCodecContext().getBitRate();
+						videoStreams.push_back(stream);
+					}
+					break;
 
-				if (!metadata.empty())
+				case AVMEDIA_TYPE_AUDIO:
+					{
+						AudioStream stream;
+						stream.nbChannels = avStream.getCodecContext().getNbChannels();
+						stream.bitRate = avStream.getCodecContext().getBitRate();
+						audioStreams.push_back(stream);
+					}
+					break;
+
+				case AVMEDIA_TYPE_SUBTITLE:
+					{
+						subtitleStreams.push_back( SubtitleStream() );
+					}
+					break;
+
+				default:
 					break;
 			}
 		}
 
+		if (!videoStreams.empty())
+			items.insert( std::make_pair(MetaData::Type::VideoStreams, videoStreams));
+		if (!audioStreams.empty())
+			items.insert( std::make_pair(MetaData::Type::AudioStreams, audioStreams));
+		if (!subtitleStreams.empty())
+			items.insert( std::make_pair(MetaData::Type::SubtitleStreams, subtitleStreams));
 
-		// Stream info
-		{
-			std::vector<Av::Stream> avStreams = input.getStreams();
+	}
 
-			std::vector<AudioStream>	audioStreams;
-			std::vector<VideoStream>	videoStreams;
-			std::vector<SubtitleStream>	subtitleStreams;
+	// Duration
+	items.insert( std::make_pair(MetaData::Type::Duration, boost::posix_time::time_duration( boost::posix_time::seconds( input.getDurationSecs() )) ));
 
-			BOOST_FOREACH(Av::Stream& avStream, avStreams)
-			{
-				switch(avStream.getCodecContext().getType())
-				{
-					case AVMEDIA_TYPE_VIDEO:
-						if (!avStream.hasAttachedPic())
-						{
-							VideoStream stream;
-							stream.bitRate = avStream.getCodecContext().getBitRate();
-							videoStreams.push_back(stream);
-						}
-						break;
-
-					case AVMEDIA_TYPE_AUDIO:
-						{
-							AudioStream stream;
-							stream.nbChannels = avStream.getCodecContext().getNbChannels();
-							stream.bitRate = avStream.getCodecContext().getBitRate();
-							audioStreams.push_back(stream);
-						}
-						break;
-
-					case AVMEDIA_TYPE_SUBTITLE:
-						{
-							subtitleStreams.push_back( SubtitleStream() );
-						}
-						break;
-
-					default:
-						break;
-				}
-			}
-
-			if (!videoStreams.empty())
-				items.insert( std::make_pair(MetaData::Type::VideoStreams, videoStreams));
-			if (!audioStreams.empty())
-				items.insert( std::make_pair(MetaData::Type::AudioStreams, audioStreams));
-			if (!subtitleStreams.empty())
-				items.insert( std::make_pair(MetaData::Type::SubtitleStreams, subtitleStreams));
+	// Cover
+	items.insert( std::make_pair(MetaData::Type::HasCover, input.getNbPictures() > 0));
 
+	// Embedded MetaData
+	// Make sure to convert strings into UTF-8
+	std::map<std::string, std::string>::const_iterator it;
+	for (it = metadata.begin(); it != metadata.end(); ++it)
+	{
+		if (boost::iequals(it->first, "artist"))
+			items.insert( std::make_pair(MetaData::Type::Artist, string_trim( string_to_utf8(it->second)) ));
+		else if (boost::iequals(it->first, "album"))
+			items.insert( std::make_pair(MetaData::Type::Album, string_trim( string_to_utf8(it->second)) ));
+		else if (boost::iequals(it->first, "title"))
+			items.insert( std::make_pair(MetaData::Type::Title, string_trim( string_to_utf8(it->second)) ));
+		else if (boost::iequals(it->first, "track")) {
+			std::size_t number;
+			if (readAs<std::size_t>(it->second, number))
+				items.insert( std::make_pair(MetaData::Type::TrackNumber, number ));
 		}
-
-		// Duration
-		items.insert( std::make_pair(MetaData::Type::Duration, boost::posix_time::time_duration( boost::posix_time::seconds( input.getDurationSecs() )) ));
-
-		// Cover
-		items.insert( std::make_pair(MetaData::Type::HasCover, input.getNbPictures() > 0));
-
-		// Embedded MetaData
-		// Make sure to convert strings into UTF-8
-		std::map<std::string, std::string>::const_iterator it;
-		for (it = metadata.begin(); it != metadata.end(); ++it)
+		else if (boost::iequals(it->first, "disc"))
 		{
-			if (boost::iequals(it->first, "artist"))
-				items.insert( std::make_pair(MetaData::Type::Artist, string_trim( string_to_utf8(it->second)) ));
-			else if (boost::iequals(it->first, "album"))
-				items.insert( std::make_pair(MetaData::Type::Album, string_trim( string_to_utf8(it->second)) ));
-			else if (boost::iequals(it->first, "title"))
-				items.insert( std::make_pair(MetaData::Type::Title, string_trim( string_to_utf8(it->second)) ));
-			else if (boost::iequals(it->first, "track")) {
-				std::size_t number;
-				if (readAs<std::size_t>(it->second, number))
-					items.insert( std::make_pair(MetaData::Type::TrackNumber, number ));
-			}
-			else if (boost::iequals(it->first, "disc"))
-			{
-				std::size_t number;
-				if (readAs<std::size_t>(it->second, number))
-					items.insert( std::make_pair(MetaData::Type::DiscNumber, number ));
-			}
-			else if (boost::iequals(it->first, "date")
+			std::size_t number;
+			if (readAs<std::size_t>(it->second, number))
+				items.insert( std::make_pair(MetaData::Type::DiscNumber, number ));
+		}
+		else if (boost::iequals(it->first, "date")
 				|| boost::iequals(it->first, "year")
 				|| boost::iequals(it->first, "WM/Year"))
-			{
-				boost::posix_time::ptime p;
-				if (readAsPosixTime(it->second, p))
-					items.insert( std::make_pair(MetaData::Type::Date, p));
-			}
-			else if (boost::iequals(it->first, "TDOR")	// Original release time (ID3v2 2.4)
-				|| boost::iequals(it->first, "TORY"))	// Original release year
-			{
-				boost::posix_time::ptime p;
-				if (readAsPosixTime(it->second, p))
-					items.insert( std::make_pair(MetaData::Type::OriginalDate, p));
-			}
-			else if (boost::iequals(it->first, "genre"))
-			{
-				std::list<std::string> genres;
-				if (readList(it->second, ";,", genres))
-					items.insert( std::make_pair(MetaData::Type::Genres, genres));
-
-			}
-			else if (boost::iequals(it->first, "MusicBrainz Artist Id"))
-			{
-				items.insert( std::make_pair(MetaData::Type::MusicBrainzArtistID, string_trim( string_to_utf8(it->second)) ));
-			}
-			else if (boost::iequals(it->first, "MusicBrainz Album Id"))
-			{
-				items.insert( std::make_pair(MetaData::Type::MusicBrainzAlbumID, string_trim( string_to_utf8(it->second)) ));
-			}
-/*			else
-				LMS_LOG(MOD_METADATA, SEV_DEBUG) << "key = " << it->first << ", value = " << it->second;
-*/
+		{
+			boost::posix_time::ptime p;
+			if (readAsPosixTime(it->second, p))
+				items.insert( std::make_pair(MetaData::Type::Date, p));
 		}
+		else if (boost::iequals(it->first, "TDOR")	// Original release time (ID3v2 2.4)
+				|| boost::iequals(it->first, "TORY"))	// Original release year
+		{
+			boost::posix_time::ptime p;
+			if (readAsPosixTime(it->second, p))
+				items.insert( std::make_pair(MetaData::Type::OriginalDate, p));
+		}
+		else if (boost::iequals(it->first, "genre"))
+		{
+			std::list<std::string> genres;
+			if (readList(it->second, ";,", genres))
+				items.insert( std::make_pair(MetaData::Type::Genres, genres));
 
-	}
-	catch(std::exception &e)
-	{
-		LMS_LOG(MOD_METADATA, SEV_ERROR) << "Parsing of '" << p << "' failed!";
+		}
+		else if (boost::iequals(it->first, "MusicBrainz Artist Id"))
+		{
+			items.insert( std::make_pair(MetaData::Type::MusicBrainzArtistID, string_trim( string_to_utf8(it->second)) ));
+		}
+		else if (boost::iequals(it->first, "MusicBrainz Album Id"))
+		{
+			items.insert( std::make_pair(MetaData::Type::MusicBrainzAlbumID, string_trim( string_to_utf8(it->second)) ));
+		}
 	}
 
+	return true;
 }
 
 } // namespace MetaData

src/metadata/AvFormat.hpp

@@ -30,7 +30,7 @@ class AvFormat : public Parser
 {
 	public:
 
-		void parse(const boost::filesystem::path& p, Items& items);
+		bool parse(const boost::filesystem::path& p, Items& items);
 
 	private:
 

src/metadata/MetaData.hpp

@@ -71,7 +71,7 @@ namespace MetaData
 
 			typedef std::shared_ptr<Parser> pointer;
 
-			virtual void parse(const boost::filesystem::path& p, Items& items) = 0;
+			virtual bool parse(const boost::filesystem::path& p, Items& items) = 0;
 
 	};
 

src/transcode/InputMediaFile.cpp

@@ -19,7 +19,6 @@
 
 
 #include <list>
-#include <boost/foreach.hpp>
 
 #include "logger/Logger.hpp"
 
@@ -47,7 +46,9 @@ InputMediaFile::InputMediaFile(const boost::filesystem::path& p)
 : _path(p)
 {
 	Av::InputFormatContext input(_path);
-	input.findStreamInfo();
+
+	if (!input.findStreamInfo())
+		throw std::runtime_error("Cannot find stream info in file: " + p.string());
 
 	// Calculate estimated duration
 	if (input.getDurationSecs())
@@ -83,7 +84,7 @@ InputMediaFile::InputMediaFile(const boost::filesystem::path& p)
 
 	avMediaTypes.unique();
 	// Scan for best streams
-	BOOST_FOREACH(enum AVMediaType type, avMediaTypes)
+	for (enum AVMediaType type : avMediaTypes)
 	{
 		Av::Stream::Idx index;
 
@@ -102,7 +103,7 @@ std::vector<Stream>
 InputMediaFile::getStreams(Stream::Type type) const
 {
 	std::vector<Stream> res;
-	BOOST_FOREACH(const Stream& stream, _streams)
+	for (const Stream& stream : _streams)
 	{
 		if (stream.getType() == type)
 			res.push_back(stream);
@@ -113,7 +114,7 @@ InputMediaFile::getStreams(Stream::Type type) const
 const Stream&
 InputMediaFile::getStream(Stream::Id index) const
 {
-	BOOST_FOREACH(const Stream& stream, _streams)
+	for (const Stream& stream : _streams)
 	{
 		if (stream.getId() == index)
 			return stream;