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cuetools.net/CUETools.Flake/Program.cs

562 lines
32 KiB
C#
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//#define FINETUNE
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using CUETools.Codecs;
using CUETools.Codecs.FLAKE;
namespace CUETools.FlakeExe
{
#if FINETUNE
class FineTuneTask
{
public int code;
public int size;
public int no;
public int gen;
public int min_depth;
public List<FineTuneTask> parents;
public bool IsImprovement
{
get
{
return this.parents.TrueForAll(p => this.size < p.size);
}
}
public bool done
{
get
{
return this.size != int.MaxValue;
}
}
public FineTuneTask(int code, int no)
{
this.code = code;
this.gen = 0;
this.no = no;
this.size = int.MaxValue;
this.min_depth = 0;
this.parents = new List<FineTuneTask>();
}
public FineTuneTask(int code, int no, FineTuneTask parent)
: this(code, no)
{
this.gen = parent.gen + 1;
this.parents.Add(parent);
}
public List<int> GetDerivativeCodes(int max_lpc_order)
{
var codes = new List<int>();
for (int ft = 0; ft < max_lpc_order; ft++)
{
int c1 = this.code ^ (1 << ft);
codes.Add(c1);
}
for (int ft = 0; ft < max_lpc_order; ft++)
{
for (int ft1 = ft + 1; ft1 < max_lpc_order; ft1++)
if (((this.code >> ft1) & 1) != ((this.code >> ft) & 1))
{
int c1 = this.code ^ (1 << ft) ^ (1 << ft1);
codes.Add(c1);
break;
}
for (int ft1 = ft - 1; ft1 >= 0; ft1--)
if (((this.code >> ft1) & 1) != ((this.code >> ft) & 1))
{
int c1 = this.code ^ (1 << ft) ^ (1 << ft1);
codes.Add(c1);
break;
}
}
return codes;
}
}
#endif
class Program
{
static void Usage()
{
Console.WriteLine("Usage : CUETools.Flake.exe [options] <input.wav>");
Console.WriteLine();
Console.WriteLine("Options:");
Console.WriteLine();
Console.WriteLine(" -0 .. -11 Compression level, default 7; 9..11 require --lax");
Console.WriteLine(" -o <file> Output filename, or \"-\" for stdout, or nul.");
Console.WriteLine(" -p # Padding bytes.");
Console.WriteLine(" -q --quiet Quiet mode.");
Console.WriteLine(" --lax Allow non-subset modes");
Console.WriteLine(" --verify Verify during encoding.");
Console.WriteLine(" --no-md5 Don't compute MD5 hash.");
Console.WriteLine(" --no-seektable Don't generate a seektable.");
Console.WriteLine(" --ignore-chunk-sizes Ignore WAV length (for pipe input)");
Console.WriteLine();
Console.WriteLine("Advanced Options:");
Console.WriteLine();
Console.WriteLine(" -b # Block size.");
Console.WriteLine(" -v # Variable block size mode (0,4).");
Console.WriteLine(" -t <type> Prediction type (fixed,levinson,search).");
Console.WriteLine(" -s <method> Stereo decorrelation (independent,estimate,evaluate,search).");
Console.WriteLine(" -r #[,#] Rice partition order {max} or {min},{max} (0..8).");
Console.WriteLine();
Console.WriteLine("LPC options:");
Console.WriteLine();
Console.WriteLine(" -m <method> Prediction order search (akaike).");
Console.WriteLine(" -e # Prediction order search depth (1..32).");
Console.WriteLine(" -w <func>[,<func>] One or more window functions (bartlett,welch,hann,flattop,tukey).");
Console.WriteLine(" -l #[,#] Prediction order {max} or {min},{max} (1..32).");
Console.WriteLine(" --window-method Window selection method (estimate,evaluate,search).");
Console.WriteLine(" --max-precision Coefficients precision search (0..1).");
Console.WriteLine();
Console.WriteLine("Fixed prediction options:");
Console.WriteLine();
Console.WriteLine(" -f #[,#] Prediction order {max} or {min},{max} (0..4).");
}
static int Main(string[] args)
{
TextWriter stdout = Console.Out;
Console.SetOut(Console.Error);
DateTime start = DateTime.Now;
TimeSpan lastPrint = TimeSpan.FromMilliseconds(0);
bool debug = false, quiet = false;
string prediction_type = null;
string stereo_method = null;
string window_method = null;
string order_method = null;
string window_function = null;
string input_file = null;
string output_file = null;
int min_precision = -1, max_precision = -1,
estimation_depth = -1;
int skip_a = 0, skip_b = 0;
int intarg = -1, vbr_mode = -1, magic = -1;
bool do_seektable = true;
bool buffered = false;
string coeffs = null;
var settings = new FlakeWriterSettings() { AllowNonSubset = true };
bool allowNonSubset = false;
bool ignore_chunk_sizes = false;
#if FINETUNE
int finetune_depth = -1;
#endif
for (int arg = 0; arg < args.Length; arg++)
{
bool ok = true;
if (args[arg].Length == 0)
ok = false;
else if (args[arg] == "--debug")
debug = true;
else if ((args[arg] == "-q" || args[arg] == "--quiet"))
quiet = true;
else if (args[arg] == "--verify")
settings.DoVerify = true;
else if (args[arg] == "--no-seektable")
do_seektable = false;
else if (args[arg] == "--ignore-chunk-sizes")
ignore_chunk_sizes = true;
else if (args[arg] == "--no-md5")
settings.DoMD5 = false;
else if (args[arg] == "--lax")
allowNonSubset = true;
else if (args[arg] == "--buffered")
buffered = true;
else if ((args[arg] == "-o" || args[arg] == "--output") && ++arg < args.Length)
output_file = args[arg];
else if ((args[arg] == "-t" || args[arg] == "--prediction-type") && ++arg < args.Length)
prediction_type = args[arg];
else if ((args[arg] == "-s" || args[arg] == "--stereo") && ++arg < args.Length)
stereo_method = args[arg];
else if ((args[arg] == "-m" || args[arg] == "--order-method") && ++arg < args.Length)
order_method = args[arg];
else if ((args[arg] == "-w" || args[arg] == "--window") && ++arg < args.Length)
window_function = args[arg];
else if (args[arg] == "--window-method" && ++arg < args.Length)
window_method = args[arg];
else if ((args[arg] == "-r" || args[arg] == "--partition-order") && ++arg < args.Length)
{
int min_partition_order, max_partition_order;
ok = (args[arg].Split(',').Length == 2
&& int.TryParse(args[arg].Split(',')[0], out min_partition_order)
&& (settings.MinPartitionOrder = min_partition_order) != -1
&& int.TryParse(args[arg].Split(',')[1], out max_partition_order)
&& (settings.MaxPartitionOrder = max_partition_order) != -1)
|| (int.TryParse(args[arg], out max_partition_order)
&& (settings.MaxPartitionOrder = max_partition_order) != -1);
}
else if ((args[arg] == "-l" || args[arg] == "--lpc-order") && ++arg < args.Length)
{
int min_lpc_order, max_lpc_order;
ok = (args[arg].Split(',').Length == 2
&& int.TryParse(args[arg].Split(',')[0], out min_lpc_order)
&& (settings.MinLPCOrder = min_lpc_order) != -1
&& int.TryParse(args[arg].Split(',')[1], out max_lpc_order)
&& (settings.MaxLPCOrder = max_lpc_order) != -1)
|| (int.TryParse(args[arg], out max_lpc_order)
&& (settings.MaxLPCOrder = max_lpc_order) != -1);
}
else if ((args[arg] == "-f" || args[arg] == "--fixed-order") && ++arg < args.Length)
{
int min_fixed_order, max_fixed_order;
ok = (args[arg].Split(',').Length == 2
&& int.TryParse(args[arg].Split(',')[0], out min_fixed_order)
&& (settings.MinFixedOrder = min_fixed_order) != -1
&& int.TryParse(args[arg].Split(',')[1], out max_fixed_order)
&& (settings.MaxFixedOrder = max_fixed_order) != -1)
|| (int.TryParse(args[arg], out max_fixed_order)
&& (settings.MaxFixedOrder = max_fixed_order) != -1);
}
else if (args[arg] == "--skip" && ++arg < args.Length)
{
ok = (args[arg].Split(',').Length == 2 &&
int.TryParse(args[arg].Split(',')[0], out skip_a) &&
int.TryParse(args[arg].Split(',')[1], out skip_b)) ||
int.TryParse(args[arg], out skip_a);
}
else if ((args[arg] == "-e" || args[arg] == "--estimation-depth") && ++arg < args.Length)
ok = int.TryParse(args[arg], out estimation_depth);
else if ((args[arg] == "-c" || args[arg] == "--max-precision") && ++arg < args.Length)
{
ok = (args[arg].Split(',').Length == 2 &&
int.TryParse(args[arg].Split(',')[0], out min_precision) &&
int.TryParse(args[arg].Split(',')[1], out max_precision)) ||
int.TryParse(args[arg], out max_precision);
}
else if ((args[arg] == "-v" || args[arg] == "--vbr"))
ok = (++arg < args.Length) && int.TryParse(args[arg], out vbr_mode);
else if ((args[arg] == "-b" || args[arg] == "--blocksize") && ++arg < args.Length && int.TryParse(args[arg], out intarg))
settings.BlockSize = intarg;
else if ((args[arg] == "-p" || args[arg] == "--padding") && ++arg < args.Length && int.TryParse(args[arg], out intarg))
settings.Padding = intarg;
else if (args[arg] == "--magic" && ++arg < args.Length)
ok = int.TryParse(args[arg], out magic);
#if FINETUNE
else if (args[arg] == "--depth" && ++arg < args.Length)
ok = int.TryParse(args[arg], out finetune_depth);
#endif
else if (args[arg] == "--coefs" && ++arg < args.Length)
coeffs = args[arg];
else if (args[arg] != "-" && args[arg][0] == '-' && int.TryParse(args[arg].Substring(1), out intarg))
{
ok = intarg >= 0 && intarg <= 11;
settings.EncoderModeIndex = intarg;
}
else if ((args[arg][0] != '-' || args[arg] == "-") && input_file == null)
input_file = args[arg];
else
ok = false;
if (!ok)
{
Usage();
return 1;
}
}
if (input_file == null || ((input_file == "-" || Path.GetExtension(input_file) == ".flac") && output_file == null))
{
Usage();
return 2;
}
if (!quiet)
{
Console.WriteLine("CUETools.Flake, Copyright (C) 2009-2013 Grigory Chudov.");
Console.WriteLine("Based on Flake encoder by Justin Ruggles, <http://flake-enc.sourceforge.net/>.");
Console.WriteLine("This is free software under the GNU GPLv3+ license; There is NO WARRANTY, to");
Console.WriteLine("the extent permitted by law. <http://www.gnu.org/licenses/> for details.");
}
#if FINETUNE
var prefix = new List<int>();
if (coeffs != null)
{
var ps = coeffs.Split(',');
for (int i = 0; i < ps.Length; i++)
prefix.Add(ps[i].StartsWith("0x") ? int.Parse(ps[i].Substring(2), System.Globalization.NumberStyles.HexNumber) : int.Parse(ps[i]));
}
string codefmt = "0x{0:x" + (max_lpc_order / 4 + 1).ToString() + "}";
int max_prefix = magic >= 0 ? magic : 8;
do
{
FineTuneTask best_task = null;
var tasks = new Dictionary<int, FineTuneTask>();
if (prefix.Count == 0)
{
tasks.Add((1 << max_lpc_order) - 1, new FineTuneTask((1 << max_lpc_order) - 1, 1));
tasks.Add((2 << max_lpc_order) - 1, new FineTuneTask((2 << max_lpc_order) - 1, 2));
//tasks.Add((3 << max_lpc_order) - 1, new FineTuneTask((3 << max_lpc_order) - 1, 3));
//tasks.Add((4 << max_lpc_order) - 1, new FineTuneTask((4 << max_lpc_order) - 1, 4));
}
else
{
foreach (var c in prefix)
{
tasks.Add(c, new FineTuneTask(c, 1));
tasks.Add((1 << max_lpc_order) ^ c, new FineTuneTask((1 << max_lpc_order) ^ c, 2));
}
}
int total_added_tasks = tasks.Values.Count;
do
{
foreach (var task in tasks.Values)
if (!task.done)
{
var prefixc = new List<int>(prefix);
prefixc.Add(task.code);
for (int i = 1; i < max_lpc_order; i++)
FlakeWriter.SetCoefs(i, new int[0]);
FlakeWriter.SetCoefs(max_lpc_order, prefixc.ToArray());
magic = prefixc.Count;
#endif
IAudioSource audioSource;
if (input_file == "-")
audioSource = new WAVReader("", Console.OpenStandardInput(), ignore_chunk_sizes);
else if (File.Exists(input_file) && Path.GetExtension(input_file) == ".wav")
audioSource = new WAVReader(input_file, null);
else if (File.Exists(input_file) && Path.GetExtension(input_file) == ".flac")
audioSource = new FlakeReader(input_file, null);
else
{
Usage();
return 3;
}
if (buffered)
audioSource = new AudioPipe(audioSource, 0x10000);
if (output_file == null)
output_file = Path.ChangeExtension(input_file, "flac");
settings.PCM = audioSource.PCM;
settings.AllowNonSubset = allowNonSubset;
FlakeWriter flake;
try
{
flake = new FlakeWriter((output_file == "-" || output_file == "nul") ? "" : output_file,
output_file == "-" ? Console.OpenStandardOutput() :
output_file == "nul" ? new NullStream() : null,
settings);
flake.FinalSampleCount = audioSource.Length < 0 ? -1 : audioSource.Length - skip_a - skip_b;
if (prediction_type != null)
flake.PredictionType = Flake.LookupPredictionType(prediction_type);
if (stereo_method != null)
flake.StereoMethod = Flake.LookupStereoMethod(stereo_method);
if (window_method != null)
flake.WindowMethod = Flake.LookupWindowMethod(window_method);
if (order_method != null)
flake.OrderMethod = Flake.LookupOrderMethod(order_method);
if (window_function != null)
flake.WindowFunction = Flake.LookupWindowFunction(window_function);
if (min_precision >= 0)
flake.MinPrecisionSearch = min_precision;
if (max_precision >= 0)
flake.MaxPrecisionSearch = max_precision;
if (estimation_depth >= 0)
flake.EstimationDepth = estimation_depth;
if (vbr_mode >= 0)
flake.VBRMode = vbr_mode;
if (magic >= 0)
flake.DevelopmentMode = magic;
flake.DoSeekTable = do_seektable;
}
catch (Exception ex)
{
Usage();
Console.WriteLine("");
Console.WriteLine("Error: {0}.", ex.Message);
return 4;
}
IAudioDest audioDest = flake;
AudioBuffer buff = new AudioBuffer(audioSource, 0x10000);
if (!quiet)
{
Console.WriteLine("Filename : {0}", input_file);
Console.WriteLine("File Info : {0}kHz; {1} channel; {2} bit; {3}", audioSource.PCM.SampleRate, audioSource.PCM.ChannelCount, audioSource.PCM.BitsPerSample, TimeSpan.FromSeconds(audioSource.Length * 1.0 / audioSource.PCM.SampleRate));
}
bool keepRunning = true;
Console.CancelKeyPress += delegate(object sender, ConsoleCancelEventArgs e)
{
keepRunning = false;
if (e.SpecialKey == ConsoleSpecialKey.ControlC)
e.Cancel = true;
else
audioDest.Delete();
};
start = DateTime.Now;
#if !DEBUG
try
#endif
{
audioSource.Position = skip_a;
while (audioSource.Read(buff, skip_b == 0 ? -1 : (int)audioSource.Remaining - skip_b) != 0)
{
audioDest.Write(buff);
TimeSpan elapsed = DateTime.Now - start;
if (!quiet)
{
if ((elapsed - lastPrint).TotalMilliseconds > 60)
{
long length = Math.Max(audioSource.Position, audioSource.Length);
Console.Error.Write("\rProgress : {0:00}%; {1:0.00}x; {2}/{3}",
100.0 * audioSource.Position / length,
audioSource.Position / elapsed.TotalSeconds / audioSource.PCM.SampleRate,
elapsed,//.ToString(@"[-][d<>.<2E>]hh<68>:<3A>mm<6D>:<3A>ss[<5B>.<2E>ff]"),
TimeSpan.FromMilliseconds(elapsed.TotalMilliseconds / audioSource.Position * length)
);
lastPrint = elapsed;
}
}
if (!keepRunning)
throw new Exception("Aborted");
}
audioDest.Close();
}
#if !DEBUG
catch (Exception ex)
{
Console.Error.Write("\r \r");
Console.WriteLine("Error : {0}", ex.Message);
audioDest.Delete();
audioSource.Close();
return 5;
}
#endif
TimeSpan totalElapsed = DateTime.Now - start;
if (!quiet)
{
Console.Error.Write("\r \r");
Console.WriteLine("Results : {0:0.00}x; {2} bytes in {1} seconds;",
audioSource.Position / totalElapsed.TotalSeconds / audioSource.PCM.SampleRate,
totalElapsed,
flake.TotalSize
);
}
audioSource.Close();
#if FINETUNE
task.size = flake.TotalSize;
Console.SetOut(stdout);
Console.Out.WriteLine("{0}\t{1:0.00}\t{2}..{3}\t{4}\t{5}\t{6}/{7}\t{8}\t{9}\t{10}\t{11}",
flake.TotalSize,
flake.UserProcessorTime.TotalSeconds > 0 ? flake.UserProcessorTime.TotalSeconds : totalElapsed.TotalSeconds,
flake.MinLPCOrder,
flake.MaxLPCOrder,
flake.BlockSize,
task.gen,
task.no.ToString().PadLeft(total_added_tasks.ToString().Length, '0'),
total_added_tasks,
task.min_depth,
best_task != null && task.size < best_task.size ? "+" + (best_task.size - task.size).ToString() : task.IsImprovement ? "*" : "",
string.Join(",", prefixc.ConvertAll(x => string.Format(codefmt, x)).ToArray()),
string.Join(",", task.parents.ConvertAll(p => string.Format(codefmt, p.code)).ToArray())
);
#else
if (debug)
{
settings = flake.Settings as FlakeWriterSettings;
Console.SetOut(stdout);
Console.Out.WriteLine("{17}\t{0}\t{1:0.00}\t{2}\t{3}\t{4}\t{5}\t{6}..{7}\t{8}..{9}\t{10}..{11}\t{12}..{13}\t{14}\t{15}\t{16}\t{18}",
flake.TotalSize,
flake.UserProcessorTime.TotalSeconds > 0 ? flake.UserProcessorTime.TotalSeconds : totalElapsed.TotalSeconds,
flake.PredictionType.ToString().PadRight(15),
flake.StereoMethod.ToString().PadRight(15),
(flake.OrderMethod.ToString() + "(" + flake.EstimationDepth.ToString() + ")").PadRight(15),
(flake.WindowMethod.ToString().PadRight(10) + "(" +
((flake.WindowFunction & WindowFunction.Tukey) != 0 ? "T" : " ") +
((flake.WindowFunction & WindowFunction.PartialTukey) != 0 ? "P" : " ") +
(((flake.WindowFunction & WindowFunction.PunchoutTukey) != 0 ? "O" : "") +
((flake.WindowFunction & WindowFunction.Welch) == 0 ? "" : "W") +
((flake.WindowFunction & WindowFunction.Hann) == 0 ? "" : "H") +
((flake.WindowFunction & WindowFunction.Flattop) == 0 ? "" : "F") +
((flake.WindowFunction & WindowFunction.Bartlett) == 0 ? "" : "B")).PadRight(1))
+")",
settings.MinPartitionOrder,
settings.MaxPartitionOrder,
settings.MinLPCOrder,
settings.MaxLPCOrder,
settings.MinFixedOrder,
settings.MaxFixedOrder,
flake.MinPrecisionSearch,
flake.MaxPrecisionSearch,
flake.Settings.BlockSize,
flake.VBRMode,
coeffs ?? "",
audioSource.Position * audioSource.PCM.BlockAlign,
(flake.PredictionType == PredictionType.Search && flake.StereoMethod == StereoMethod.Evaluate && flake.WindowMethod == WindowMethod.EvaluateN && flake.WindowFunction == (WindowFunction.PunchoutTukey | WindowFunction.PartialTukey | WindowFunction.Tukey) && flake.EstimationDepth == 2 && flake.MinPrecisionSearch == 0 && settings.HasDefaultValuesForMode(8)) ? "8" :
(flake.PredictionType == PredictionType.Levinson && flake.StereoMethod == StereoMethod.Evaluate && flake.WindowMethod == WindowMethod.EvaluateN && flake.WindowFunction == (WindowFunction.PunchoutTukey | WindowFunction.PartialTukey | WindowFunction.Tukey) && flake.EstimationDepth == 1 && flake.MinPrecisionSearch == 1 && settings.HasDefaultValuesForMode(7)) ? "7" :
(flake.PredictionType == PredictionType.Levinson && flake.StereoMethod == StereoMethod.Evaluate && flake.WindowMethod == WindowMethod.EstimateN && flake.WindowFunction == (WindowFunction.PunchoutTukey | WindowFunction.PartialTukey) && flake.EstimationDepth == 1 && flake.MinPrecisionSearch == 1 && settings.HasDefaultValuesForMode(6)) ? "6" :
(flake.PredictionType == PredictionType.Levinson && flake.StereoMethod == StereoMethod.Evaluate && flake.WindowMethod == WindowMethod.Estimate && flake.WindowFunction == WindowFunction.PunchoutTukey && flake.EstimationDepth == 1 && flake.MinPrecisionSearch == 1 && settings.HasDefaultValuesForMode(5)) ? "5" :
(flake.PredictionType == PredictionType.Levinson && flake.StereoMethod == StereoMethod.Estimate && flake.WindowMethod == WindowMethod.Estimate && flake.WindowFunction == WindowFunction.PunchoutTukey && flake.EstimationDepth == 2 && flake.MinPrecisionSearch == 1 && settings.HasDefaultValuesForMode(4)) ? "4" :
(flake.PredictionType == PredictionType.Levinson && flake.StereoMethod == StereoMethod.Estimate && flake.WindowMethod == WindowMethod.Estimate && flake.WindowFunction == WindowFunction.PunchoutTukey && flake.EstimationDepth == 1 && flake.MinPrecisionSearch == 1 && settings.HasDefaultValuesForMode(3)) ? "3" :
(flake.PredictionType == PredictionType.Levinson && flake.StereoMethod == StereoMethod.Estimate && flake.WindowMethod == WindowMethod.Estimate && flake.WindowFunction == WindowFunction.PartialTukey && flake.EstimationDepth == 1 && flake.MinPrecisionSearch == 1 && settings.HasDefaultValuesForMode(2)) ? "2" :
(flake.PredictionType == PredictionType.Fixed && flake.StereoMethod == StereoMethod.Independent && flake.WindowMethod == WindowMethod.Estimate && flake.MinPrecisionSearch == 1 && flake.WindowFunction == WindowFunction.Tukey && settings.HasDefaultValuesForMode(1)) ? "1" :
(flake.PredictionType == PredictionType.Fixed && flake.StereoMethod == StereoMethod.Independent && flake.WindowMethod == WindowMethod.Estimate && flake.MinPrecisionSearch == 1 && flake.WindowFunction == WindowFunction.Tukey && settings.HasDefaultValuesForMode(0)) ? "0" :
"?"
);
}
#endif
#if FINETUNE
if (best_task == null || task.size < best_task.size)
best_task = task;
}
var promising_tasks = new List<FineTuneTask>();
promising_tasks.AddRange(tasks.Values);
promising_tasks.RemoveAll(task => !task.IsImprovement);
promising_tasks.Sort((task1, task2) => task1.size.CompareTo(task2.size));
if (finetune_depth >= 0 && promising_tasks.Count > finetune_depth)
promising_tasks.RemoveRange(finetune_depth, promising_tasks.Count - finetune_depth);
total_added_tasks = 0;
foreach (var c in promising_tasks)
{
foreach(var c1 in c.GetDerivativeCodes(max_lpc_order))
if (!tasks.ContainsKey(c1))
{
var new_task = new FineTuneTask(c1, ++total_added_tasks, c);
foreach(var c2 in new_task.GetDerivativeCodes(max_lpc_order))
if (tasks.ContainsKey(c2) && tasks[c2].done && !new_task.parents.Contains(tasks[c2]))
new_task.parents.Add(tasks[c2]);
new_task.min_depth = int.MaxValue;
foreach(var p in new_task.parents)
if (promising_tasks.IndexOf(p) >= 0)
new_task.min_depth = Math.Min(new_task.min_depth, Math.Max(p.min_depth, promising_tasks.IndexOf(p) + 1));
tasks.Add(c1, new_task);
}
}
if (total_added_tasks == 0)
break;
} while (true);
prefix.Add(best_task.code);
} while (prefix.Count < max_prefix);
Console.Out.WriteLine("\t{0}", string.Join(",", prefix.ConvertAll(x => string.Format(codefmt, x)).ToArray()));
#endif
return 0;
}
}
}
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