protected override WaveStructure ReadFile(Stream stream, bool readAudioData = true)
{
var structure = new WaveStructure();
var parser = new RiffParser {
ReadDataChunk = readAudioData
};
parser.ParseRiff(stream);
ValidateWaveFile(parser);
WaveFmtChunk fmt = parser.GetSubChunk <WaveFmtChunk>("fmt ");
WaveDataChunk data = parser.GetSubChunk <WaveDataChunk>("data");
WaveSmplChunk smpl = parser.GetSubChunk <WaveSmplChunk>("smpl");
int bytesPerSample = fmt.BitsPerSample.DivideByRoundUp(8);
structure.RiffSubChunks = parser.GetAllSubChunks();
structure.SampleCount = data.SubChunkSize / bytesPerSample / fmt.ChannelCount;
structure.SampleRate = fmt.SampleRate;
structure.BitsPerSample = fmt.BitsPerSample;
structure.ChannelCount = fmt.ChannelCount;
if (smpl?.Loops?.FirstOrDefault() != null)
{
structure.LoopStart = smpl.Loops[0].Start;
structure.LoopEnd = smpl.Loops[0].End;
structure.Looping = structure.LoopEnd > structure.LoopStart;
}
if (!readAudioData)
{
return(structure);
}
switch (fmt.BitsPerSample)
{
case 16:
structure.AudioData16 = data.Data.InterleavedByteToShort(fmt.ChannelCount);
break;
case 8:
structure.AudioData8 = data.Data.DeInterleave(bytesPerSample, fmt.ChannelCount);
break;
}
return(structure);
}
protected override At9Structure ReadFile(Stream stream, bool readAudioData = true)
{
var structure = new At9Structure();
var parser = new RiffParser {
ReadDataChunk = readAudioData
};
parser.RegisterSubChunk("fact", At9FactChunk.ParseAt9);
parser.RegisterSubChunk("data", At9DataChunk.ParseAt9);
parser.FormatExtensibleParser = At9WaveExtensible.ParseAt9;
parser.ParseRiff(stream);
ValidateAt9File(parser);
var fmt = parser.GetSubChunk <WaveFmtChunk>("fmt ");
var ext = (At9WaveExtensible)fmt.Ext;
var fact = parser.GetSubChunk <At9FactChunk>("fact");
var data = parser.GetSubChunk <At9DataChunk>("data");
var smpl = parser.GetSubChunk <WaveSmplChunk>("smpl");
structure.Config = new Atrac9Config(ext.ConfigData);
structure.SampleCount = fact.SampleCount;
structure.EncoderDelay = fact.EncoderDelaySamples;
structure.Version = ext.VersionInfo;
structure.AudioData = data.AudioData;
structure.SuperframeCount = data.FrameCount;
if (smpl?.Loops?.FirstOrDefault() != null)
{
structure.LoopStart = smpl.Loops[0].Start - structure.EncoderDelay;
structure.LoopEnd = smpl.Loops[0].End - structure.EncoderDelay;
structure.Looping = structure.LoopEnd > structure.LoopStart;
}
return(structure);
}
