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package javax.media;

import javax.media.protocol.*;

/**
 * Standard JMF class -- see this class in the JMF Javadoc. Coding complete.
 *
 * @author Ken Larson
 *
 */
public class ProcessorModel
{
    private MediaLocator inputLocator;
    /**
     * Output formats.
     */
    private Format[] formats;
    private ContentDescriptor outputContentDescriptor;
    private DataSource inputDataSource;

    public ProcessorModel()
    {
        super();
    }

    public ProcessorModel(DataSource inputDataSource, Format[] formats,
            ContentDescriptor outputContentDescriptor)
    {
        this.inputDataSource = inputDataSource;

        this.formats = formats;
        this.outputContentDescriptor = outputContentDescriptor;
    }

    public ProcessorModel(Format[] formats,
            ContentDescriptor outputContentDescriptor)
    {
        this.formats = formats;
        this.outputContentDescriptor = outputContentDescriptor;
    }

    public ProcessorModel(MediaLocator inputLocator, Format[] formats,
            ContentDescriptor outputContentDescriptor)
    {
        this.inputLocator = inputLocator;
        this.formats = formats;
        this.outputContentDescriptor = outputContentDescriptor;

    }

    public ContentDescriptor getContentDescriptor()
    {
        return outputContentDescriptor;
    }

    public DataSource getInputDataSource()
    {
        return inputDataSource;
    }

    public MediaLocator getInputLocator()
    {
        // if (inputDataSource != null)
        // return inputDataSource.getLocator(); // TODO: it appears we return
        // null if a data source was specified.
        return inputLocator;
    }

    public Format getOutputTrackFormat(int tIndex)
    {
        if (formats == null)
            return null;
        if (tIndex < 0 || tIndex >= formats.length)
            return null;

        return formats[tIndex];
    }

    public int getTrackCount(int availableTrackCount)
    {
        if (formats == null)
            return -1;
        return formats.length; // TODO: what is input param for?
    }

    public boolean isFormatAcceptable(int tIndex, Format tFormat)
    {
        if (formats == null)
            return true;
        if (tIndex < 0 || tIndex >= formats.length)
            return true;

        return tFormat.matches(formats[tIndex]);

    }

}