/// <summary>
/// Get Settings from User Input or Config file
/// </summary>
/// <param name="bands">Specifies the desired height of the spectrogram (bands)</param>
/// <param name="samplecount">Number of samples</param>
/// <param name="samplerate">Sample rate</param>
/// <param name="basefreq">Base frequency in Hertz</param>
/// <param name="maxfreq">Maximum frequency in Hertz</param>
/// <param name="pixpersec">Time resolution in Pixels Per Second</param>
/// <param name="bandsperoctave">Frequency resolution in Bands Per Octave</param>
/// <param name="Xsize">Specifies the desired width of the spectrogram</param>
/// <param name="mode">0 = Analysis mode, 1 = Synthesis mode</param>
public static void SettingsInput(ref int bands, ref int samplecount, ref int samplerate, ref double basefreq, ref double maxfreq, ref double pixpersec, ref double bandsperoctave, ref int Xsize, int mode)
{
/* mode :
* 0 = Analysis mode
* 1 = Synthesis mode
*/
int i = 0;
double gf;
double f;
double trash;
double ma; // maximum allowed frequency
int unset = 0; // count of unset interdependant settings
int set_min = 0;
int set_max = 0;
int set_bpo = 0;
int set_y = 0;
int set_pps = 0;
int set_x = 0;
#if DEBUG
Console.Write("settingsinput...\n");
#endif
// Path to the configuration file
string configFileName = "arss.conf";
TextReader freqcfg = null;
if (File.Exists(configFileName))
{
freqcfg = new StreamReader(configFileName);
}
if (samplerate == 0) // if we're in synthesis mode and that no samplerate has been defined yet
{
if (GlobalMembersUtil.quiet)
{
Console.Error.WriteLine("Please provide a sample rate for your output sound.\nUse --sample-rate (-r).\nExiting with error.\n");
Environment.Exit(1);
}
//********Output settings querying********
Console.Write("Sample rate [44100] : "); // Query for a samplerate
samplerate = (int)GlobalMembersUtil.GetFloat();
if (samplerate == 0 || samplerate < -2147483647) // The -2147483647 check is used for the sake of compatibility with C90
{
samplerate = 44100; // Default value
}
//--------Output settings querying--------
}
if (basefreq != 0) // count unset interdependant frequency-domain settings
{
set_min = 1;
}
if (maxfreq != 0)
{
set_max = 1;
}
if (bandsperoctave != 0)
{
set_bpo = 1;
}
if (bands != 0)
{
set_y = 1;
}
unset = set_min + set_max + set_bpo + set_y;
if (unset == 4) // if too many settings are set
{
if (mode == 0)
{
Console.Error.WriteLine("You have set one parameter too many.\nUnset either --min-freq (-min), --max-freq (-max), --bpo (-b)\nExiting with error.\n");
}
if (mode == 1)
{
Console.Error.WriteLine("You have set one parameter too many.\nUnset either --min-freq (-min), --max-freq (-max), --bpo (-b) or --height (-y)\nExiting with error.\n");
}
Environment.Exit(1);
}
if (pixpersec != 0)
{
set_pps = 1;
}
if (Xsize != 0)
{
set_x = 1;
}
if (set_x + set_pps == 2 && mode == 0)
{
Console.Error.WriteLine("You cannot define both the image width and the horizontal resolution.\nUnset either --pps (-p) or --width (-x)\nExiting with error.\n");
Environment.Exit(1);
}
if (freqcfg != null) // load settings from file if it exists
{
if (basefreq == 0) // load values from it if they haven't been set yet
{
basefreq = double.Parse(freqcfg.ReadLine());
}
else
{
trash = double.Parse(freqcfg.ReadLine());
}
if (maxfreq == 0)
{
maxfreq = double.Parse(freqcfg.ReadLine());
}
else
{
trash = double.Parse(freqcfg.ReadLine());
}
if (bandsperoctave == 0)
{
bandsperoctave = double.Parse(freqcfg.ReadLine());
}
else
{
trash = double.Parse(freqcfg.ReadLine());
}
if (pixpersec == 0)
{
pixpersec = double.Parse(freqcfg.ReadLine());
}
else
{
trash = double.Parse(freqcfg.ReadLine());
}
}
else
{
if (basefreq == 0) // otherwise load default values
{
basefreq = 27.5;
}
if (maxfreq == 0)
{
maxfreq = 20000;
}
if (bandsperoctave == 0)
{
bandsperoctave = 12;
}
if (pixpersec == 0)
{
pixpersec = 150;
}
}
if (freqcfg != null)
{
freqcfg.Close();
}
if (unset < 3 && set_min == 0)
{
if (GlobalMembersUtil.quiet)
{
Console.Error.WriteLine("Please define a minimum frequency.\nUse --min-freq (-min).\nExiting with error.\n");
Environment.Exit(1);
}
Console.Write("Min. frequency (Hz) [{0:f3}]: ", basefreq);
gf = GlobalMembersUtil.GetFloat();
if (gf != 0)
{
basefreq = gf;
}
unset++;
set_min = 1;
}
basefreq /= samplerate; // turn basefreq from Hz to fractions of samplerate
if (unset < 3 && set_bpo == 0)
{
if (GlobalMembersUtil.quiet)
{
Console.Error.WriteLine("Please define a bands per octave setting.\nUse --bpo (-b).\nExiting with error.\n");
Environment.Exit(1);
}
Console.Write("Bands per octave [{0:f3}]: ", bandsperoctave);
gf = GlobalMembersUtil.GetFloat();
if (gf != 0)
{
bandsperoctave = gf;
}
unset++;
set_bpo = 1;
}
if (unset < 3 && set_max == 0)
{
i = 0;
do
{
i++;
f = basefreq * Math.Pow(GlobalMembersDsp.LOGBASE, (i / bandsperoctave));
}while (f < 0.5);
ma = basefreq * Math.Pow(GlobalMembersDsp.LOGBASE, ((i - 2) / bandsperoctave)) * samplerate; // max allowed frequency
if (maxfreq > ma)
{
if (GlobalMembersUtil.FMod(ma, 1.0) == 0.0)
{
maxfreq = ma; // replaces the "Upper frequency limit above Nyquist frequency" warning
}
else
{
maxfreq = ma - GlobalMembersUtil.FMod(ma, 1.0);
}
}
if (mode == 0) // if we're in Analysis mode
{
if (GlobalMembersUtil.quiet)
{
Console.Error.WriteLine("Please define a maximum frequency.\nUse --max-freq (-max).\nExiting with error.\n");
Environment.Exit(1);
}
Console.Write("Max. frequency (Hz) (up to {0:f3}) [{1:f3}]: ", ma, maxfreq);
gf = GlobalMembersUtil.GetFloat();
if (gf != 0)
{
maxfreq = gf;
}
if (maxfreq > ma)
{
if (GlobalMembersUtil.FMod(ma, 1.0) == 0.0)
{
maxfreq = ma; // replaces the "Upper frequency limit above Nyquist frequency" warning
}
else
{
maxfreq = ma - GlobalMembersUtil.FMod(ma, 1.0);
}
}
}
unset++;
set_max = 1;
}
if (set_min == 0)
{
basefreq = Math.Pow(GlobalMembersDsp.LOGBASE, (bands - 1) / bandsperoctave) * maxfreq; // calculate the lower frequency in Hz
Console.Write("Min. frequency : {0:f3} Hz\n", basefreq);
basefreq /= samplerate;
}
if (set_max == 0)
{
maxfreq = Math.Pow(GlobalMembersDsp.LOGBASE, (bands - 1) / bandsperoctave) * (basefreq * samplerate); // calculate the upper frequency in Hz
Console.Write("Max. frequency : {0:f3} Hz\n", maxfreq);
}
if (set_y == 0)
{
bands = 1 + (int)GlobalMembersUtil.RoundOff(bandsperoctave * (GlobalMembersUtil.Log(maxfreq) - GlobalMembersUtil.Log(basefreq * samplerate)));
Console.Write("Bands : {0:D}\n", bands);
}
if (set_bpo == 0)
{
if (GlobalMembersDsp.LOGBASE == 1.0)
{
bandsperoctave = maxfreq / samplerate;
}
else
{
bandsperoctave = (bands - 1) / (GlobalMembersUtil.Log(maxfreq) - GlobalMembersUtil.Log(basefreq * samplerate));
}
Console.Write("Bands per octave : {0:f3}\n", bandsperoctave);
}
if (set_x == 1 && mode == 0) // If we're in Analysis mode and that X is set (by the user)
{
pixpersec = (double)Xsize * (double)samplerate / (double)samplecount; // calculate pixpersec
Console.Write("Pixels per second : {0:f3}\n", pixpersec);
}
if ((mode == 0 && set_x == 0 && set_pps == 0) || (mode == 1 && set_pps == 0)) // If in Analysis mode none are set or pixpersec isn't set in Synthesis mode
{
if (GlobalMembersUtil.quiet)
{
Console.Error.WriteLine("Please define a pixels per second setting.\nUse --pps (-p).\nExiting with error.\n");
Environment.Exit(1);
}
Console.Write("Pixels per second [{0:f3}]: ", pixpersec);
gf = GlobalMembersUtil.GetFloat();
if (gf != 0)
{
pixpersec = gf;
}
}
basefreq *= samplerate; // turn back to Hz just for the sake of writing to the file
TextWriter freqcfgOut = new StreamWriter(configFileName); // saving settings to a file
if (freqcfgOut == null)
{
Console.Error.WriteLine("Cannot write to configuration file");
Environment.Exit(1);
}
freqcfgOut.WriteLine(basefreq);
freqcfgOut.WriteLine(maxfreq);
freqcfgOut.WriteLine(bandsperoctave);
freqcfgOut.WriteLine(pixpersec);
freqcfgOut.Close();
basefreq /= samplerate; // basefreq is now in fraction of the sampling rate instead of Hz
pixpersec /= samplerate; // pixpersec is now in fraction of the sampling rate instead of Hz
}