Initial import from SVN
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emeric
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#include <boost/date_time/gregorian/gregorian.hpp>
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#include <boost/date_time/posix_time/posix_time.hpp>
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#include <boost/foreach.hpp>
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#include "Utils.hpp"
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#include "Extractor.hpp"
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namespace MetaData
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{
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extern "C" {
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/**
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* Type of a function that libextractor calls for each
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* meta data item found.
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*
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* @param cls closure (user-defined)
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* @param plugin_name name of the plugin that produced this value;
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* special values can be used (i.e. '<zlib>' for zlib being
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* used in the main libextractor library and yielding
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* meta data).
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* @param type libextractor-type describing the meta data
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* @param format basic format information about data
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* @param data_mime_type mime-type of data (not of the original file);
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* can be NULL (if mime-type is not known)
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* @param data actual meta-data found
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* @param data_len number of bytes in data
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* @return 0 to continue extracting, 1 to abort
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*/
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int processMetaData(void *cls,
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const char *plugin_name,
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enum EXTRACTOR_MetaType type,
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enum EXTRACTOR_MetaFormat format,
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const char *data_mime_type,
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const char *data,
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size_t data_len)
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{
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Items& items = *(reinterpret_cast<Items*>(cls));
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switch (type) {
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case EXTRACTOR_METATYPE_ARTIST:
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assert( std::string(data_mime_type) == "text/plain" );
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items.insert( std::make_pair(MetaData::Artist, std::string( data, data_len ? data_len - 1 : 0)) );
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break;
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case EXTRACTOR_METATYPE_TITLE:
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assert( std::string(data_mime_type) == "text/plain" );
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items.insert( std::make_pair(MetaData::Title, std::string( data, data_len ? data_len - 1 : 0)) );
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break;
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case EXTRACTOR_METATYPE_ALBUM:
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assert( std::string(data_mime_type) == "text/plain" );
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items.insert( std::make_pair(MetaData::Album, std::string( data, data_len ? data_len - 1 : 0)) );
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break;
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case EXTRACTOR_METATYPE_GENRE:
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assert( std::string(data_mime_type) == "text/plain" );
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{
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std::list<std::string> genres;
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if (readList(std::string( data, data_len ? data_len - 1 : 0), ";-:/,", genres))
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items.insert( std::make_pair(MetaData::Genre, genres));
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}
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break;
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/* case EXTRACTOR_METATYPE_PICTURE:
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std::cout << "picture spotted" << std::endl;
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break;*/
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case EXTRACTOR_METATYPE_COVER_PICTURE:
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{
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GenericData parsedData;
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const unsigned char* dataStart = reinterpret_cast<const unsigned char*>(data);
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parsedData.mimeType = std::string(data_mime_type);
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parsedData.data = std::vector<unsigned char>( &dataStart[0], &dataStart[data_len]);
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items.insert( std::make_pair(MetaData::Cover, parsedData));
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}
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break;
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/* case EXTRACTOR_METATYPE_EVENT_PICTURE:
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std::cout << "Event picture spotted" << std::endl;
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break;*/
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/* case EXTRACTOR_METATYPE_CONTRIBUTOR_PICTURE:
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std::cout << "Contrib picture spotted" << std::endl;
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break;*/
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/* case EXTRACTOR_METATYPE_SONG_COUNT:
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// How many songs in the album
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break;*/
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/* case EXTRACTOR_METATYPE_AUDIO_CODEC:
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assert( std::string(data_mime_type) == "text/plain" );
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std::cout << "Aduio codec: " << std::string( data, data_len ? data_len - 1 : 0) << std::endl;
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break;*/
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case EXTRACTOR_METATYPE_PUBLICATION_YEAR:
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assert( std::string(data_mime_type) == "text/plain" );
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std::cout << "publication year = " << std::string( data, data_len ? data_len - 1 : 0) << std::endl;
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break;
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case EXTRACTOR_METATYPE_PUBLICATION_DATE:
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assert( std::string(data_mime_type) == "text/plain" );
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std::cout << "publication date = " << std::string( data, data_len ? data_len - 1 : 0) << std::endl;
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break;
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case EXTRACTOR_METATYPE_ORIGINAL_RELEASE_YEAR:
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assert( std::string(data_mime_type) == "text/plain" );
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std::cout << "original release year = " << std::string( data, data_len ? data_len - 1 : 0) << std::endl;
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break;
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case EXTRACTOR_METATYPE_CREATION_TIME:
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assert( std::string(data_mime_type) == "text/plain" );
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{
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boost::posix_time::ptime p;
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if (readAs<boost::posix_time::ptime>(std::string( data, data_len ? data_len - 1 : 0), p))
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items.insert( std::make_pair(MetaData::CreationTime, p));
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else if (readAsPosixTime(std::string( data, data_len ? data_len - 1 : 0), p))
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items.insert( std::make_pair(MetaData::CreationTime, p));
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}
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break;
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case EXTRACTOR_METATYPE_DURATION:
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assert( std::string(data_mime_type) == "text/plain" );
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{
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boost::posix_time::time_duration duration;
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if (readAs<boost::posix_time::time_duration>( std::string( data, data_len ? data_len - 1 : 0), duration))
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items.insert( std::make_pair(MetaData::Duration, duration) );
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}
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break;
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case EXTRACTOR_METATYPE_TRACK_NUMBER:
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assert( std::string(data_mime_type) == "text/plain" );
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{
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std::size_t number(0);
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if (readAs<size_t>( std::string( data, data_len ? data_len - 1 : 0), number))
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items.insert( std::make_pair(MetaData::TrackNumber, number) );
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}
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break;
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case EXTRACTOR_METATYPE_DISC_NUMBER:
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assert( std::string(data_mime_type) == "text/plain" );
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{
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std::size_t number(0);
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if (readAs<size_t>( std::string( data, data_len ? data_len - 1 : 0), number))
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items.insert( std::make_pair(MetaData::DiscNumber, number) );
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}
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break;
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default:
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/* if (std::string(data_mime_type) == "text/plain")
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std::cout << "TYPE = " << type << ", data = '" << std::string(data, data_len ? data_len - 1 : 0) << "'" << std::endl;
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else
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std::cout << "TYPE = " << type << ", data_mime_type = '" << data_mime_type << "', data len = " << data_len << std::endl;
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*/
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break;
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}
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return 0;
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}
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};
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Extractor::Extractor()
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: _plugins( nullptr )
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{
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// _plugins = EXTRACTOR_plugin_add_config (nullptr, "mp3:ogg:flac:wav:gstreamer", EXTRACTOR_OPTION_DEFAULT_POLICY);
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}
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Extractor::~Extractor()
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{
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}
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void
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Extractor::parse(const boost::filesystem::path& p, Items& items)
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{
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if (boost::filesystem::is_regular(p)) {
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_plugins = EXTRACTOR_plugin_add_defaults (EXTRACTOR_OPTION_DEFAULT_POLICY);
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if (_plugins == nullptr) {
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throw std::runtime_error("EXTRACTOR_plugin_add_config failed!");
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}
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EXTRACTOR_extract (_plugins, p.string().c_str(), NULL, 0, &processMetaData, &items);
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EXTRACTOR_plugin_remove_all (_plugins);
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}
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}
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bool
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Extractor::parseCover(const boost::filesystem::path& p, GenericData& data)
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{
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bool res = false;
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Items items;
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if (boost::filesystem::is_regular(p)) {
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_plugins = EXTRACTOR_plugin_add_defaults (EXTRACTOR_OPTION_DEFAULT_POLICY);
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if (_plugins == nullptr) {
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throw std::runtime_error("EXTRACTOR_plugin_add_config failed!");
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}
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EXTRACTOR_extract (_plugins, p.string().c_str(), NULL, 0, &processMetaData, &items);
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EXTRACTOR_plugin_remove_all (_plugins);
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if (items.find(MetaData::Cover) != items.end()) {
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data = boost::any_cast<GenericData>(items[MetaData::Cover]);
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res = true;
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}
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}
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return res;
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}
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} // namespace MetaData
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