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 void SetNewSource(SpectrumVideoFileConfig sourceCfg)
{
if (!SpectrumVideoSource.OpenSource(sourceCfg, out source))
{
throw new Exception("Source file is incorrectly configured.");
}
}
protected override SpectrumVideoCanvasConfig CreateNewItem()
{
//Show file dialog
OpenFileDialog fd = new OpenFileDialog();
fd.Title = "Open IQ Files";
fd.Filter = "IQ Files (*.wav, *.*)|*.wav;*.*";
if (fd.ShowDialog() != DialogResult.OK)
{
return(null);
}
//Get the file config
SpectrumVideoFileConfig file;
if (WavFileReader.IdentifyWavFile(fd.FileName, out WavFileInfo info))
{
file = new SpectrumVideoFileConfig
{
pathname = fd.FileName
};
}
else
{
SampleFormatPromptForm prompt = new SampleFormatPromptForm();
if (prompt.ShowDialog() != DialogResult.OK)
{
return(null);
}
file = new SpectrumVideoFileConfig
{
pathname = fd.FileName,
raw_format = prompt.SampleFormat,
raw_rate = prompt.SampleRate
};
}
//Create new
return(new SpectrumVideoCanvasConfig
{
source = file
});
}
