/*
 *	saint.java
 *
 *	Standalone program to demonstrate the usage of the Saint class.
 */

import	java.io.InputStream;
import	java.io.IOException;
import	java.io.FileInputStream;
import	java.io.FileOutputStream;
import	java.io.OutputStream;

import	javax.sound.sampled.AudioFormat;
import	javax.sound.sampled.AudioSystem;
import	javax.sound.sampled.DataLine;
import	javax.sound.sampled.SourceDataLine;
import	javax.sound.sampled.LineUnavailableException;

import	gnu.getopt.Getopt;

import	org.tritonus.lowlevel.saint.Saint;



public class saint
{
	private static class SupportedFormat
	{
		private String			m_strName;
		private int			m_nNumber;
		private AudioFormat.Encoding	m_encoding;
		private int			m_nSampleSize;
		private boolean			m_bBigEndian;

		// sample size is in bits
		public SupportedFormat(String strName,
				       int nNumber,
				       AudioFormat.Encoding encoding,
				       int nSampleSize,
				       boolean bBigEndian)
		{
			m_strName = strName;
			m_nNumber = nNumber;
			m_encoding = encoding;
			m_nSampleSize = nSampleSize;
		}

		public String getName()
		{
			return m_strName;
		}

		public int getNumber()
		{
			return m_nNumber;
		}

		public AudioFormat.Encoding getEncoding()
		{
			return m_encoding;
		}

		public int getSampleSize()
		{
			return m_nSampleSize;
		}

		public boolean getBigEndian()
		{
			return m_bBigEndian;
		}
	}

	private static final SupportedFormat[]	SUPPORTED_FORMATS =
	{
		new SupportedFormat("s8", Saint.SND_PCM_SFMT_S8,
				    AudioFormat.Encoding.PCM_SIGNED, 8, true),
		new SupportedFormat("u8", Saint.SND_PCM_SFMT_U8,
				    AudioFormat.Encoding.PCM_UNSIGNED, 8, true),
		new SupportedFormat("s16l", Saint.SND_PCM_SFMT_S16_LE,
				    AudioFormat.Encoding.PCM_SIGNED, 16, false),
		new SupportedFormat("s16b", Saint.SND_PCM_SFMT_S16_BE,
				    AudioFormat.Encoding.PCM_SIGNED, 16, true),
		new SupportedFormat("u16l", Saint.SND_PCM_SFMT_U16_LE,
				    AudioFormat.Encoding.PCM_UNSIGNED, 16, false),
		new SupportedFormat("u16b", Saint.SND_PCM_SFMT_U16_BE,
				    AudioFormat.Encoding.PCM_UNSIGNED, 16, true),
		new SupportedFormat("s24l", Saint.SND_PCM_SFMT_S24_LE,
				    AudioFormat.Encoding.PCM_SIGNED, 24, false),
		new SupportedFormat("s24b", Saint.SND_PCM_SFMT_S24_BE,
				    AudioFormat.Encoding.PCM_SIGNED, 24, true),
		new SupportedFormat("u24l", Saint.SND_PCM_SFMT_U24_LE,
				    AudioFormat.Encoding.PCM_UNSIGNED, 24, false),
		new SupportedFormat("u24b", Saint.SND_PCM_SFMT_U24_BE,
				    AudioFormat.Encoding.PCM_UNSIGNED, 24, true),
		new SupportedFormat("s32l", Saint.SND_PCM_SFMT_S32_LE,
				    AudioFormat.Encoding.PCM_SIGNED, 32, false),
		new SupportedFormat("s32b", Saint.SND_PCM_SFMT_S32_BE,
				    AudioFormat.Encoding.PCM_SIGNED, 32, true),
		new SupportedFormat("u32l", Saint.SND_PCM_SFMT_U32_LE,
				    AudioFormat.Encoding.PCM_UNSIGNED, 32, false),
		new SupportedFormat("u32b", Saint.SND_PCM_SFMT_U32_BE,
				    AudioFormat.Encoding.PCM_UNSIGNED, 32, true),
		new SupportedFormat("f32l", Saint.SND_PCM_SFMT_S32_LE,
				    AudioFormat.Encoding.PCM_SIGNED /* obviously wrong */, 32, false),
		new SupportedFormat("f32b", Saint.SND_PCM_SFMT_S32_BE,
				    AudioFormat.Encoding.PCM_SIGNED /* obviously wrong */, 32, true),
	};

	private static final int	DEFAULT_FORMAT = 2;


	public static void main(String[] args)
		throws	IOException
	{
		InputStream	bitstream = null;
		InputStream	orchestra = null;
		InputStream	score = null;
		OutputStream	output = null;
		int		nOutputFormatIndex = DEFAULT_FORMAT;
		boolean		bLineOutput = false;
		int	c;

		Getopt	g = new Getopt("saint", args, "hVb:c:s:o:f:");
		while ((c = g.getopt()) != -1)
		{
			switch (c)
			{
			case 'h':
				printUsageAndExit();

			case 'V':
				printVersionAndExit();

			case 'b':
				bitstream = new FileInputStream(g.getOptarg());
				break;

			case 'c':
				orchestra = new FileInputStream(g.getOptarg());
				break;

			case 's':
				score = new FileInputStream(g.getOptarg());
				break;

			case 'o':
				if (g.getOptarg().equals("-"))
				{
					output = System.out;
				}
				if (g.getOptarg().equals("+"))
				{
					bLineOutput = true;
				}
				else
				{
					output = new FileOutputStream(g.getOptarg());
				}
				break;

			case 'f':
				int	nNewOutputFormatIndex = -1;
				for (int i = 0; i < SUPPORTED_FORMATS.length; i++)
				{
					if (SUPPORTED_FORMATS[i].getName().equals(g.getOptarg()))
					{
						nNewOutputFormatIndex = i;
						// nNewOutputFormat = SUPPORTED_FORMATS[i].getNumber();
					}
				}
				if (nNewOutputFormatIndex != -1)
				{
					nOutputFormatIndex = nNewOutputFormatIndex;
				}
				else
				{
					System.err.println("warning: output format " + g.getOptarg() + "not supported; using default output format");
				}
				break;
			}
		}
		if (output == null && ! bLineOutput)
		{
			System.out.println("no output specified!");
			printUsageAndExit();
		}
		Saint	saint = null;
		// specifying a bitstream overrides specifying orchestra & score files.
		if (bitstream != null)
		{
			saint = new Saint(bitstream);
		}
		else if (orchestra != null)
		{
			if (score != null)
			{
				saint = new Saint(orchestra, score);
			}
			else
			{
				System.out.println("no score file specified!");
				printUsageAndExit();
			}
		}
		else
		{
			System.out.println("neither bitstream nor orchestra specified!");
			printUsageAndExit();
		}
		System.err.println("output will be produces with " + saint.getChannelCount() + " channel(s) at " + saint.getSamplingRate() + " Hz\n");
		if (bLineOutput)
		{
			AudioFormat	format = new AudioFormat(
				SUPPORTED_FORMATS[nOutputFormatIndex].getEncoding(),
				saint.getSamplingRate(),
				SUPPORTED_FORMATS[nOutputFormatIndex].getSampleSize(),
				saint.getChannelCount(),
				// TODO: 24 bit is not handled correctely!!!
				saint.getChannelCount() * SUPPORTED_FORMATS[nOutputFormatIndex].getSampleSize() / 8,
				saint.getSamplingRate(),
				SUPPORTED_FORMATS[nOutputFormatIndex].getBigEndian());
			DataLine.Info	info = new DataLine.Info(
				SourceDataLine.class, format);
			SourceDataLine	line = null;
			try
			{
				line = (SourceDataLine) AudioSystem.getLine(info);
				// TODO: (Tritonus) check if calling without arguments should work
				line.open(format);
				line.start();
			}
			catch (LineUnavailableException e)
			{
			}
			output = new SourceDataLineOutputStream(line);
		}
		saint.setOutput(output, SUPPORTED_FORMATS[nOutputFormatIndex].getNumber());
		saint.run();
		try
		{
			output.close();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}



	public static void
	printUsageAndExit()
	{
		System.out.println("usage:");
		System.out.println("\t[TODO]:");
		System.exit(1);
	}


	public static void
	printVersionAndExit()
	{
		System.out.println("saint (new) version 0.1");
		System.exit(0);
	}
}


/*** saint.java ***/