public TrackInfo GetTrackInfo(string path)
{
MPGImport.mpg123_init();
handle_mpg = MPGImport.mpg123_new(null, errPtr);
x = MPGImport.mpg123_open(handle_mpg, path);
MPGImport.mpg123_getformat(handle_mpg, out rate, out channels, out encoding);
intRate = rate.ToInt32();
intChannels = channels.ToInt32();
intEncoding = encoding.ToInt32();
MPGImport.mpg123_id3(handle_mpg, out id3v1, out id3v2);
MPGImport.mpg123_format_none(handle_mpg);
MPGImport.mpg123_format(handle_mpg, intRate, intChannels, 208);
if (id3v1 != IntPtr.Zero)
{
MPGImport.mpg123_id3v1 v1 = (MPGImport.mpg123_id3v1)Marshal.PtrToStructure(id3v1, typeof(MPGImport.mpg123_id3v1));
return(new TrackInfo
{
Album = new String(v1.album), // "Runnin' Wild"
Artist = new String(v1.artist), // "Airbourne"
Title = new String(v1.title), // "Stand Up For Rock N Roll"
Year = new String(v1.year), // "2007"
Genre = (v1.genre < GenreText.Length ? GenreText[v1.genre] : string.Empty), // "Rock"
Comment = new String(v1.comment), // "Comment"
Tag = new String(v1.tag), // "Comment"
Rate = intRate,
Channels = intChannels,
Encoding = intEncoding
});
}
MPGImport.mpg123_close(handle_mpg);
// TODO: ID3v2 support is more complex.
return(new TrackInfo());
}
protected void init()
{
MPGImport.mpg123_init();
handle_mpg = MPGImport.mpg123_new(null, errPtr);
errorCheck = MPGImport.mpg123_open(handle_mpg, this.path);
MPGImport.mpg123_getformat(handle_mpg, out frequency, out channels, out encoding);
_frequency = frequency.ToInt32();
_channels = channels.ToInt32();
_encoding = encoding.ToInt32();
txtRate = _frequency.ToString();
txtChannels = _channels.ToString();
txtEnc = _encoding.ToString();
MPGImport.mpg123_id3(handle_mpg, out id3v1, out id3v2);
MPGImport.mpg123_id3v1 MP3Data = new MPGImport.mpg123_id3v1();
MPGImport.mpg123_id3v2 MP3v2Data = new MPGImport.mpg123_id3v2();
// Try getting id3v2 data
try {
MP3v2Data = (MPGImport.mpg123_id3v2)Marshal.PtrToStructure(id3v2, (Type)typeof(MPGImport.mpg123_id3v2));
} catch (ArgumentNullException e) {
Debug.Log("No ID3v2 Data found: " + e.Message);
}
// ID3v2: Artist
try {
MPGImport.mpg123_string ptrArtist = (MPGImport.mpg123_string)Marshal.PtrToStructure(MP3v2Data.artist, (Type)typeof(MPGImport.mpg123_string));
txtArtist = ptrArtist.p;
} catch (ArgumentNullException e) {
Debug.Log("No ID3v2 artist found: " + e.ToString());
}
// ID3v2: Title
try {
MPGImport.mpg123_string ptrTitle = (MPGImport.mpg123_string)Marshal.PtrToStructure(MP3v2Data.title, (Type)typeof(MPGImport.mpg123_string));
txtTitle = ptrTitle.p;
} catch (ArgumentNullException e) {
Debug.Log("No ID3v2 title found: " + e.ToString());
}
// Try getting id3v1 data if not all id3v2 data was found
if (txtArtist == "Unknown" || txtTitle == "Unknown") {
try {
} catch (ArgumentNullException e) {
Debug.Log("No ID3v1 Data found: " + e.Message);
MP3Data = (MPGImport.mpg123_id3v1)Marshal.PtrToStructure(id3v1, (Type)typeof(MPGImport.mpg123_id3v1));
}
}
// ID3v1: Artist
if (txtArtist == "Unknown") {
try {
txtArtist = new string(MP3Data.artist);
if (txtArtist.Trim().Length < 1)
txtArtist = "Unknown";
Debug.Log("ID3v1 Artist Found: " + txtArtist);
} catch (ArgumentNullException e) {
Debug.Log("No ID3v1 artist: " + e.ToString());
}
}
// ID3v1: Title
if (txtTitle == "Unknown") {
try {
txtTitle = new string(MP3Data.title);
if (txtTitle.Trim().Length < 1)
txtTitle = "Unknown";
Debug.Log("ID3v1 Title Found: " + txtTitle);
} catch (ArgumentNullException e) {
Debug.Log("No ID3v1 title: " + e.ToString());
}
}
Debug.Log("Final id3 data: " + txtArtist + " - " + txtTitle);
MPGImport.mpg123_format_none(handle_mpg);
MPGImport.mpg123_format(handle_mpg, _frequency, _channels, _encoding);
FrameSize = MPGImport.mpg123_outblock(handle_mpg);
len = MPGImport.mpg123_length(handle_mpg);
maxVal = (float)short.MaxValue;
fChan = (float)_channels;
Buffer = new byte[FrameSize];
overFlow = new byte[0];
audioLength = len / (float)_frequency;
}
public AudioClip StartImport(string mPath)
{
MPGImport.mpg123_init();
handle_mpg = MPGImport.mpg123_new(null, errPtr);
try
{
x = MPGImport.mpg123_open(handle_mpg, mPath);
MPGImport.mpg123_getformat(handle_mpg, out rate, out channels, out encoding);
intRate = rate.ToInt32();
intChannels = channels.ToInt32();
intEncoding = encoding.ToInt32();
MPGImport.mpg123_id3(handle_mpg, out id3v1, out id3v2);
MPGImport.mpg123_format_none(handle_mpg);
MPGImport.mpg123_format(handle_mpg, intRate, intChannels, 208);
string title;
if (id3v1 != IntPtr.Zero)
{
Debug.Log("Getting ID3 info");
MPGImport.mpg123_id3v1 v1 = (MPGImport.mpg123_id3v1)Marshal.PtrToStructure(id3v1, typeof(MPGImport.mpg123_id3v1));
title = new String(v1.title);
}
else
{
title = Path.GetFileNameWithoutExtension(mPath);
}
FrameSize = MPGImport.mpg123_outblock(handle_mpg);
byte[] Buffer = new byte[FrameSize];
lengthSamples = MPGImport.mpg123_length(handle_mpg);
Debug.Log("Creating audio clip");
myClip = AudioClip.Create(title, lengthSamples, intChannels, intRate, false);
int importIndex = 0;
while (0 == MPGImport.mpg123_read(handle_mpg, Buffer, FrameSize, out done))
{
float[] fArray;
fArray = ByteToFloat(Buffer);
float offset = (importIndex * fArray.Length) / 2;
if (offset > lengthSamples)
{
Debug.LogWarning("[STED] MP3 file " + mPath + " is of an unexpected length and was truncated.");
break; // File was reported as shorter than it is. Salvage what we have and return.
}
myClip.SetData(fArray, (int)offset);
importIndex++;
}
}
catch (Exception ex)
{
// Attempt to dump any used memory before continuing.
// TODO: Still holds onto memory when repeatedy failing.
myClip.UnloadAudioData();
myClip = null;
throw ex;
}
finally
{
MPGImport.mpg123_close(handle_mpg);
}
return(myClip);
}
