public override AudioFile Read(string fileName)
{
AudioFile audioFile = new AudioFile();
byte[] vs = File.ReadAllBytes(fileName + ".wav");
int index = 0;
//Check File Validity
if (ByteTools.BytesToString(vs, ref index, 4) != "RIFF")
{
throw new FileLoadException("File Header Invalid");
}
int tFileLength = (int)ByteTools.BytesToUInt(vs, ref index);
if (ByteTools.BytesToString(vs, ref index, 4) != "WAVE")
{
throw new FileLoadException("File Header Invalid");
}
if (ByteTools.BytesToString(vs, ref index, 4) != "fmt ")
{
throw new FileLoadException("File Header Invalid");
}
//Read Format
AudioFileFormat format = new AudioFileFormat();
int lengthOfHeader = (int)ByteTools.BytesToUInt(vs, ref index);
int indexAfterHeader = index + lengthOfHeader;
index += 2;
format.nChannels = ByteTools.BytesToUShort(vs, ref index);
format.SampleRate = ByteTools.BytesToUInt(vs, ref index);
index += 6;
format.BitsPerSample = ByteTools.BytesToUShort(vs, ref index);
index = indexAfterHeader;
//Check Validity Again
while (ByteTools.BytesToString(vs, ref index, 4) != "data")
{
index -= 3;
if (index > 100)
{
throw new FileLoadException("File Header Invalid");
}
}
//Read Audio Data
audioFile.audioSize = ByteTools.BytesToUInt(vs, ref index);
audioFile.audioData = new byte[(int)audioFile.audioSize];
Array.Copy(vs, index, audioFile.audioData, 0, (int)audioFile.audioSize);
//Return All Necessary Data
audioFile.fileFormat = format;
return(audioFile);
}
public AudioFile Read(string fileName, out ArrayList ID3Frames)
{
AudioFile audioFile = new AudioFile();
byte[] vs = File.ReadAllBytes(fileName + ".mp3");
int index = 0;
//Load ID3
readID3(vs, ref index);
Console.WriteLine("ID3v2." + ID3Ver + " Header Loaded");
//Start Reading Frames
AudioFileFormat format = new AudioFileFormat();
byte[] audioData;
while (index < vs.Length)
{
//TODO: Implement MP3 File Reading
//Read Frame Header
byte[] headerBytes = new byte[4];
Array.Copy(vs, index, headerBytes, 0, 4);
index += 4;
MP3FrameHeader header = ReadFrameHeader(headerBytes);
if (format.BitsPerSample != header.bps)
{
format.BitsPerSample = (ushort)header.bps;
}
if (format.SampleRate != header.sampleRate)
{
format.SampleRate = header.sampleRate;
}
if (format.nChannels != header.channels)
{
format.nChannels = (ushort)header.channels;
}
if (header.prot)
{
index += 2;
}
int bound = header.channelMode == 0b0 ? 4 : header.channelMode == 0b01 ? 8 : header.channelMode == 0b10 ? 12 : header.channelMode == 0b11 ? 16 : -1;
}
ID3Frames = frames;
return(audioFile);
}
