private TrackInfo InitializeTrackInfo(Uri path)
{
int srate = 0;
int channels = 0;
FileStream fs = File.Open(path.ToString(), FileMode.Open, FileAccess.Read, FileShare.Read);
if (fs == null)
return null;
if (fs.Seek(0, SeekOrigin.Begin) == -1L)
{
fs.Close();
return null;
}
byte[] hdr = new byte[36];
if (fs.Read(hdr, 0, 36) <= 0)
{
fs.Close();
return null;
}
if (hdr[0] != 'R' || hdr[1] != 'I' || hdr[2] != 'F' || hdr[3] != 'F')
{
fs.Close();
return null;
}
// Note: bytes 4 thru 7 contain the file size - 8 bytes
if (hdr[8] != 'W' || hdr[9] != 'A' || hdr[10] != 'V' || hdr[11] != 'E')
{
fs.Close();
return null;
}
if (hdr[12] != 'f' || hdr[13] != 'm' || hdr[14] != 't' || hdr[15] != ' ')
{
fs.Close();
return null;
}
long extraBytes = hdr[16] + (hdr[17] << 8) + (hdr[18] << 16) + (hdr[19] << 24) - 16;
int compression = hdr[20] + (hdr[21] << 8);
// Type 1 is PCM/Uncompressed
if (compression != 1)
{
fs.Close();
return null;
}
channels = hdr[22] + (hdr[23] << 8);
// Only mono or stereo PCM is supported in this example
if (channels < 1 || channels > 2)
{
fs.Close();
return null;
}
// Samples per second, independent of number of channels
srate = hdr[24] + (hdr[25] << 8) + (hdr[26] << 16) + (hdr[27] << 24);
// Bytes 28-31 contain the "average bytes per second", unneeded here
// Bytes 32-33 contain the number of bytes per sample (includes channels)
// Bytes 34-35 contain the number of bits per single sample
int bits = hdr[34] + (hdr[35] << 8);
// Supporting other sample depths will require conversion
if (bits != 16)
{
fs.Close();
return null;
}
// Skip past extra bytes, if any
if (fs.Seek(36L + extraBytes, SeekOrigin.Begin) == -1L)
{
fs.Close();
return null;
}
// Start reading the next frame. Only supported frame is the data block
byte[] b = new byte[8];
if (fs.Read(b, 0, 8) <= 0)
{
fs.Close();
return null;
}
// Do we have a fact block?
if (b[0] == 'f' && b[1] == 'a' && b[2] == 'c' && b[3] == 't')
{
// Skip the fact block
if (fs.Seek(36L + extraBytes + 12L, SeekOrigin.Begin) == -1L)
{
fs.Close();
return null;
}
// Read the next frame
if (fs.Read(b, 0, 8) <= 0)
{
fs.Close();
return null;
}
}
// Now look for the data block
if (b[0] != 'd' || b[1] != 'a' || b[2] != 't' || b[3] != 'a')
{
fs.Close();
return null;
}
int bytes = b[4] + (b[5] << 8) + (b[6] << 16) + (b[7] << 24);
int ms = (bytes / 2) / (srate / 1000);
if (channels == 2) ms /= 2;
// No need to read the whole file, just the first 135 seconds
int size = bytes;
int sampleSize = 135;
int bytesInNSecs = sampleSize * srate * 2 * channels;
bytes = bytes > bytesInNSecs ? bytesInNSecs : bytes;
byte[] samples = new byte[bytes];
if (fs.Read(samples, 0, bytes) <= 0)
{
fs.Close();
return null;
}
fs.Close();
//AudioData data = new AudioData();
//data.SetData(samples, Constants.OFA_LITTLE_ENDIAN, bytes/2, srate,
//channels == 2 ? true : false, ms, Constants.WavFileExtension);
bool stereo = (channels == 2) ? true : false;
string fingerprint = NativeMethods.ofa_create_print(samples, 0, (int)bytes / 2, srate, stereo);
TrackInfo info = new TrackInfo();
info.FileName = path.ToString();
info.Fingerprint = fingerprint;
info.LengthInMS = ms;
info.Format = waveFormat;
return info;
}
private TrackInfo InitializeTrackInfo(Uri path)
{
int srate = 0;
int channels = 0;
FileStream fs = File.Open(path.ToString(), FileMode.Open, FileAccess.Read, FileShare.Read);
if (fs == null)
{
return(null);
}
if (fs.Seek(0, SeekOrigin.Begin) == -1L)
{
fs.Close();
return(null);
}
byte[] hdr = new byte[36];
if (fs.Read(hdr, 0, 36) <= 0)
{
fs.Close();
return(null);
}
if (hdr[0] != 'R' || hdr[1] != 'I' || hdr[2] != 'F' || hdr[3] != 'F')
{
fs.Close();
return(null);
}
// Note: bytes 4 thru 7 contain the file size - 8 bytes
if (hdr[8] != 'W' || hdr[9] != 'A' || hdr[10] != 'V' || hdr[11] != 'E')
{
fs.Close();
return(null);
}
if (hdr[12] != 'f' || hdr[13] != 'm' || hdr[14] != 't' || hdr[15] != ' ')
{
fs.Close();
return(null);
}
long extraBytes = hdr[16] + (hdr[17] << 8) + (hdr[18] << 16) + (hdr[19] << 24) - 16;
int compression = hdr[20] + (hdr[21] << 8);
// Type 1 is PCM/Uncompressed
if (compression != 1)
{
fs.Close();
return(null);
}
channels = hdr[22] + (hdr[23] << 8);
// Only mono or stereo PCM is supported in this example
if (channels < 1 || channels > 2)
{
fs.Close();
return(null);
}
// Samples per second, independent of number of channels
srate = hdr[24] + (hdr[25] << 8) + (hdr[26] << 16) + (hdr[27] << 24);
// Bytes 28-31 contain the "average bytes per second", unneeded here
// Bytes 32-33 contain the number of bytes per sample (includes channels)
// Bytes 34-35 contain the number of bits per single sample
int bits = hdr[34] + (hdr[35] << 8);
// Supporting other sample depths will require conversion
if (bits != 16)
{
fs.Close();
return(null);
}
// Skip past extra bytes, if any
if (fs.Seek(36L + extraBytes, SeekOrigin.Begin) == -1L)
{
fs.Close();
return(null);
}
// Start reading the next frame. Only supported frame is the data block
byte[] b = new byte[8];
if (fs.Read(b, 0, 8) <= 0)
{
fs.Close();
return(null);
}
// Do we have a fact block?
if (b[0] == 'f' && b[1] == 'a' && b[2] == 'c' && b[3] == 't')
{
// Skip the fact block
if (fs.Seek(36L + extraBytes + 12L, SeekOrigin.Begin) == -1L)
{
fs.Close();
return(null);
}
// Read the next frame
if (fs.Read(b, 0, 8) <= 0)
{
fs.Close();
return(null);
}
}
// Now look for the data block
if (b[0] != 'd' || b[1] != 'a' || b[2] != 't' || b[3] != 'a')
{
fs.Close();
return(null);
}
int bytes = b[4] + (b[5] << 8) + (b[6] << 16) + (b[7] << 24);
int ms = (bytes / 2) / (srate / 1000);
if (channels == 2)
{
ms /= 2;
}
// No need to read the whole file, just the first 135 seconds
int size = bytes;
int sampleSize = 135;
int bytesInNSecs = sampleSize * srate * 2 * channels;
bytes = bytes > bytesInNSecs ? bytesInNSecs : bytes;
byte[] samples = new byte[bytes];
if (fs.Read(samples, 0, bytes) <= 0)
{
fs.Close();
return(null);
}
fs.Close();
//AudioData data = new AudioData();
//data.SetData(samples, Constants.OFA_LITTLE_ENDIAN, bytes/2, srate,
//channels == 2 ? true : false, ms, Constants.WavFileExtension);
bool stereo = (channels == 2) ? true : false;
string fingerprint = NativeMethods.ofa_create_print(samples, 0, (int)bytes / 2, srate, stereo);
TrackInfo info = new TrackInfo();
info.FileName = path.ToString();
info.Fingerprint = fingerprint;
info.LengthInMS = ms;
info.Format = waveFormat;
return(info);
}
private void FillTrackInfo(TrackInfo info, bool lookupByFingerprint, bool getMetadata)
{
string requestString = url + "?" + string.Format(fingerprint_request_format,
musicDnsKey.Trim(),
clientVersion.Trim(),
lookupByFingerprint ? info.Fingerprint : info.Puid,
getMetadata ? "1" : "0",
info.BitRate,
info.Format,
info.LengthInMS,
string.IsNullOrEmpty(info.Artist) ? unknown : info.Artist,
string.IsNullOrEmpty(info.Track) ? unknown : info.Track,
string.IsNullOrEmpty(info.Album) ? unknown : info.Album,
info.TrackNum,
string.IsNullOrEmpty(info.Genre) ? unknown : info.Genre,
string.IsNullOrEmpty(info.Year) ? "0" : info.Year,
info.Encoding);
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(requestString);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
#region Old Metadata Code
//metadata meta = new metadata();
//meta.Namespace = metadataNamespace;
//meta.puid.Columns["id"].Namespace = "";
//meta.puid.Columns["id"].Prefix = "";
//meta.ReadXml(streamRead);
#endregion
string responseXml = reader.ReadToEnd();
reader.Close();
response.Close();
XmlDocument xml = new XmlDocument();
xml.LoadXml(responseXml);
foreach(XmlNode rootNode in xml.ChildNodes)
{
if (string.Compare(rootNode.Name, "metadata", true) == 0)
{
foreach (XmlNode metadataNode in rootNode.ChildNodes)
{
if (string.Compare(metadataNode.Name, "track", true) == 0)
{
foreach (XmlNode trackNode in metadataNode.ChildNodes)
{
if (string.Compare(trackNode.Name, "artist", true) == 0)
{
foreach (XmlNode artistNode in trackNode.ChildNodes)
{
if (string.Compare(artistNode.Name, "name", true) == 0)
info.Artist = artistNode.InnerXml; //TODO: remove & encoding
}
}
else if (string.Compare(trackNode.Name, "puid-list", true) == 0)
{
foreach (XmlNode puidListNode in trackNode.ChildNodes)
{
if (string.Compare(puidListNode.Name, "puid", true) == 0)
info.Puid = puidListNode.Attributes["id"].InnerXml;
}
}
}
}
}
}
}
#region Old Metadata Code
/*
if(meta.track.Rows.Count > 0)
{
if(!meta.track[0].IstitleNull())
info.Track = meta.track[0].title;
metadata._puid_listRow[] plrs = meta.track[0]._Getpuid_listRows();
if(plrs.Length > 0)
{
metadata.puidRow[] prs = plrs[0].GetpuidRows();
if((prs.Length > 0)&&(!prs[0].IsidNull()))
info.Puid = prs[0].id;
}
metadata.artistRow[] ars = meta.track[0].GetartistRows();
if((ars.Length > 0)&&(!ars[0].IsnameNull()))
info.Artist = ars[0].name;
}
*/
//MusicBrainz lookup
//http://musicbrainz.org/show/puid/?puid=2e6d085b-bf25-10d7-4bce-66f21de0e798
#endregion
int major = 0;
int minor = 0;
int revision = 0;
NativeMethods.ofa_get_version(ref major, ref minor, ref revision);
Version version = new Version(major, minor, revision, 0);
info.Version = version;
}
private void FillTrackInfo(TrackInfo info, bool lookupByFingerprint, bool getMetadata)
{
string requestString = url + "?" + string.Format(fingerprint_request_format,
musicDnsKey.Trim(),
clientVersion.Trim(),
lookupByFingerprint ? info.Fingerprint : info.Puid,
getMetadata ? "1" : "0",
info.BitRate,
info.Format,
info.LengthInMS,
string.IsNullOrEmpty(info.Artist) ? unknown : info.Artist,
string.IsNullOrEmpty(info.Track) ? unknown : info.Track,
string.IsNullOrEmpty(info.Album) ? unknown : info.Album,
info.TrackNum,
string.IsNullOrEmpty(info.Genre) ? unknown : info.Genre,
string.IsNullOrEmpty(info.Year) ? "0" : info.Year,
info.Encoding);
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(requestString);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
#region Old Metadata Code
//metadata meta = new metadata();
//meta.Namespace = metadataNamespace;
//meta.puid.Columns["id"].Namespace = "";
//meta.puid.Columns["id"].Prefix = "";
//meta.ReadXml(streamRead);
#endregion
string responseXml = reader.ReadToEnd();
reader.Close();
response.Close();
XmlDocument xml = new XmlDocument();
xml.LoadXml(responseXml);
foreach (XmlNode rootNode in xml.ChildNodes)
{
if (string.Compare(rootNode.Name, "metadata", true) == 0)
{
foreach (XmlNode metadataNode in rootNode.ChildNodes)
{
if (string.Compare(metadataNode.Name, "track", true) == 0)
{
foreach (XmlNode trackNode in metadataNode.ChildNodes)
{
if (string.Compare(trackNode.Name, "artist", true) == 0)
{
foreach (XmlNode artistNode in trackNode.ChildNodes)
{
if (string.Compare(artistNode.Name, "name", true) == 0)
{
info.Artist = artistNode.InnerXml; //TODO: remove & encoding
}
}
}
else if (string.Compare(trackNode.Name, "puid-list", true) == 0)
{
foreach (XmlNode puidListNode in trackNode.ChildNodes)
{
if (string.Compare(puidListNode.Name, "puid", true) == 0)
{
info.Puid = puidListNode.Attributes["id"].InnerXml;
}
}
}
}
}
}
}
}
#region Old Metadata Code
/*
* if(meta.track.Rows.Count > 0)
* {
* if(!meta.track[0].IstitleNull())
* info.Track = meta.track[0].title;
*
*
* metadata._puid_listRow[] plrs = meta.track[0]._Getpuid_listRows();
* if(plrs.Length > 0)
* {
* metadata.puidRow[] prs = plrs[0].GetpuidRows();
*
*
* if((prs.Length > 0)&&(!prs[0].IsidNull()))
* info.Puid = prs[0].id;
* }
*
*
* metadata.artistRow[] ars = meta.track[0].GetartistRows();
*
* if((ars.Length > 0)&&(!ars[0].IsnameNull()))
* info.Artist = ars[0].name;
* }
*/
//MusicBrainz lookup
//http://musicbrainz.org/show/puid/?puid=2e6d085b-bf25-10d7-4bce-66f21de0e798
#endregion
int major = 0;
int minor = 0;
int revision = 0;
NativeMethods.ofa_get_version(ref major, ref minor, ref revision);
Version version = new Version(major, minor, revision, 0);
info.Version = version;
}