public static bool OpenSource(SpectrumVideoFileConfig cfg, out SpectrumVideoSource source)
{
//Set default
source = null;
//Make sure file exists
if (!File.Exists(cfg.pathname))
{
return(false);
}
//Open stream
FileStream fs = new FileStream(cfg.pathname, FileMode.Open, FileAccess.Read);
//Attempt to load as a WAV file
ISampleReader reader;
try
{
reader = new WavFileReader(fs);
} catch
{
//Fall back to loading RAW files
fs.Position = 0;
if (cfg.raw_rate == 0)
{
return(false);
}
reader = new StreamSampleReader(fs, cfg.raw_format, cfg.raw_rate, 0, 2, 32768);
}
//Get source
source = new SpectrumVideoSource(fs, reader);
return(true);
}
public WavFileReader(Stream underlyingStream, int bufferSize = 16384) : base(underlyingStream)
{
//Read WAV header
byte[] header = new byte[WavHeaderUtil.HEADER_LENGTH];
underlyingStream.Read(header, 0, WavHeaderUtil.HEADER_LENGTH);
if (!WavHeaderUtil.ParseWavHeader(header, out info))
{
throw new Exception("This is not a valid WAV header.");
}
//Create wrapper
reader = new StreamSampleReader(underlyingStream, Format, SampleRate, WavHeaderUtil.HEADER_LENGTH, Channels, bufferSize);
}
