// Methods :: Private :: DownloadFromAmazonViaMusicBrainz
/// <summary>
/// Get the cover URL from amazon with the help of libmusicbrainz
/// </summary>
/// <remarks>
/// This should only be called from <see cref="GetWebThread" />
/// and <see cref="DownloadFromAmazon" />. Normally,
/// <see cref="GetWeb" /> should be used instead.
/// </remarks>
/// <param name="album">
/// The <see cref="Album"> for which a cover needs to be downloaded.
/// </param>
/// <returns>
/// A <see cref="Gdk.Pixbuf" /> if a cover is found, null otherwise.
/// </returns>
/// <exception cref="WebException">
/// Thrown if an error occurred while downloading.
/// </exception>
/// <exception cref="GLib.GException">
/// Thrown if loading file fails.
/// </exception>
private Pixbuf DownloadFromAmazonViaMusicBrainz(Album album)
{
// Rather than do the lib search and catch the
// DllNotFoundException every single time,
// we check a simple bool as a performance helper.
if (musicbrainz_lib_missing)
{
return(null);
}
Pixbuf pix = null;
try {
// Sane album title
string sane_album_title;
if (album.Name != null)
{
sane_album_title = SanitizeString(album.Name);
}
else
{
sane_album_title = String.Empty;
}
// Sane artist name
string sane_artist_name;
if (album.Artists != null && album.Artists.Length > 0)
{
sane_artist_name = album.Artists [0].ToLower();
}
else
{
sane_artist_name = String.Empty;
}
//
string asin = null;
// TODO: Move to constant
string AmazonImageUri =
"http://images.amazon.com/images/P/{0}.01._SCMZZZZZZZ_.jpg";
// remove "disc 1" and family
// TODO: Make the regexes translatable?
// (e.g. "uno|dos|tres...", "les|los..)
string sane_album_title_regex = @"[,:]?\s*";
sane_album_title_regex += @"(cd|dis[ck])\s*";
sane_album_title_regex += @"(\d+|one|two|three|four|five|six|seven|eight|nine|ten)\s*$";
sane_album_title = Regex.Replace(sane_album_title, sane_album_title_regex, String.Empty);
// Remove "The " and "the " from artist names
string sane_artist_name_regex = @"^the\s+";
sane_artist_name = Regex.Replace(sane_artist_name, sane_artist_name_regex, String.Empty);
MusicBrainz c = new MusicBrainz();
// set the depth of the query
// (see http://wiki.musicbrainz.org/ClientHOWTO)
c.SetDepth(4);
string [] album_name = new string [] { sane_album_title };
bool match =
c.Query(MusicBrainz.MBQ_FindAlbumByName, album_name);
if (match)
{
int num_albums =
c.GetResultInt(MusicBrainz.MBE_GetNumAlbums);
string fetched_artist_name;
for (int i = 1; i <= num_albums; i++)
{
c.Select(MusicBrainz.MBS_SelectAlbum, i);
// gets the artist from the first track of the album
c.GetResultData
(MusicBrainz.MBE_AlbumGetArtistName, 1,
out fetched_artist_name);
// Remove "The " here as well
if (fetched_artist_name != null)
{
string tmp = fetched_artist_name.ToLower();
string fetched_artist_name_regex = @"^the\s+";
fetched_artist_name = Regex.Replace(tmp, fetched_artist_name_regex, String.Empty);
}
else
{
fetched_artist_name = String.Empty;
}
if (fetched_artist_name == sane_artist_name)
{
c.GetResultData
(MusicBrainz.MBE_AlbumGetAmazonAsin, out asin);
break;
}
// go back one level so we can select the next album
c.Select(MusicBrainz.MBS_Back);
}
}
if (asin == null)
{
pix = null;
}
else
{
string uri = String.Format(AmazonImageUri, asin);
pix = Download(uri);
}
} catch (DllNotFoundException) {
// We catch this exception so we can always include the
// musicbrainz support but not have a strict compile/runtime
// requirement on it.
musicbrainz_lib_missing = true;
}
return(pix);
}
//////////////////////////////////////////////////////////////////////////
// Method: GetMusicBrainzReleases
// FullName: MusicDataminer.MusicDBParser.GetMusicBrainzReleases
// Access: public
// Returns: bool
// Parameter: string artist
// Parameter: string albumName
// Parameter: MusicBrainz o
// Parameter: List<MusicBrainzAlbum> releasesList
// Parameter: out string retrievedName
//////////////////////////////////////////////////////////////////////////
public bool GetMusicBrainzReleases(string artist, string albumName,
List <MusicBrainzRelease> releasesList, out string retrievedName, string aStyle)
{
MusicBrainz o;
// Create the musicbrainz object, which will be needed for subsequent calls
o = new MusicBrainz();
// Set the proper server to use. Defaults to mm.musicbrainz.org:80
if (Environment.GetEnvironmentVariable("MB_SERVER") != null)
{
o.SetServer(Environment.GetEnvironmentVariable("MB_SERVER"), 80);
}
// Check to see if the debug env var has been set
if (Environment.GetEnvironmentVariable("MB_DEBUG") != null)
{
o.SetDebug(Environment.GetEnvironmentVariable("MB_DEBUG") != "0");
}
// Tell the server to only return 4 levels of data, unless the MB_DEPTH env var is set
if (Environment.GetEnvironmentVariable("MB_DEPTH") != null)
{
o.SetDepth(int.Parse(Environment.GetEnvironmentVariable("MB_DEPTH")));
}
else
{
o.SetDepth(4);
}
retrievedName = albumName;
bool foundRelevantRelease = false;
//Console.WriteLine("Searching for occurrences for: " + artist + " / " + albumName);
iForm.PrintLine("(" + aStyle + ") LOOK: " + artist + " / " + albumName);
bool found = o.Query(MusicBrainz.MBQ_FileInfoLookup, new String[] { "", artist, albumName, "", "", "" });
if (!found)
{
return(found);
}
// Select the first album
o.Select(MusicBrainz.MBS_SelectLookupResult, 1);
string type;
o.GetResultData(MusicBrainz.MBE_LookupGetType, out type);
string fragment;
o.GetFragmentFromURL(type, out fragment);
// iterate through all the results
o.Select(MusicBrainz.MBS_Rewind);
if (!o.Select(MusicBrainz.MBS_SelectLookupResult, 1))
{
return(foundRelevantRelease);
}
// NOTE: must be done before the next Select
int relevance = o.GetResultInt(MusicBrainz.MBE_LookupGetRelevance);
// if not sure about it, quit
if (relevance < 80)
{
return(foundRelevantRelease);
}
// select the album
o.Select(MusicBrainz.MBS_SelectLookupResultAlbum);
o.GetResultData(MusicBrainz.MBE_AlbumGetAlbumName, out retrievedName);
int nReleases = o.GetResultInt(MusicBrainz.MBE_AlbumGetNumReleaseDates);
if (nReleases != 0)
{
albumName = retrievedName;
for (int i = 1; i <= nReleases; i++)
{
if (o.Select(MusicBrainz.MBS_SelectReleaseDate, i))
{
foundRelevantRelease = true;
string country;
o.GetResultData(MusicBrainz.MBE_ReleaseGetCountry, out country);
string date;
o.GetResultData(MusicBrainz.MBE_ReleaseGetDate, out date);
if (dataBase.countries.ContainsKey(country.ToUpper()))
{
// add it to the list
MusicBrainzRelease release = new MusicBrainzRelease();
release.country = (Country)dataBase.countries[country];
if (date.Length >= 4)
{
release.date = int.Parse(date.Substring(0, 4));
}
else
{
return(false); //release.date = int.Parse(date);
}
// Add the release both to the Album and Country
releasesList.Add(release);
release.country.releases.Add(release);
}
}
o.Select(MusicBrainz.MBS_Back);
}
}
return(foundRelevantRelease);
}
