yuvformat.java

FMJ（freedom media for java)是java视频开发的新选择

package javax.media.format;

import javax.media.Format;

import net.sf.fmj.utility.FormatUtils;

/**
 * Coding complete.
 * @author Ken Larson
 *
 */
public class YUVFormat extends VideoFormat
{
	public static final int YUV_411 = 1;
	public static final int YUV_420 = 2;
	public static final int YUV_422 = 4;
	public static final int YUV_111 = 8;
	public static final int YUV_YVU9 = 16;
	public static final int YUV_YUYV = 32;
	public static final int YUV_SIGNED = 64;

	protected int strideY = NOT_SPECIFIED;

	protected int strideUV = NOT_SPECIFIED;

	protected int yuvType = NOT_SPECIFIED;

	protected int offsetY = NOT_SPECIFIED;

	protected int offsetU = NOT_SPECIFIED;

	protected int offsetV = NOT_SPECIFIED;

	private static String ENCODING = YUV;

	public YUVFormat()
	{
		super(ENCODING);
		dataType = Format.byteArray;

	}

	public YUVFormat(int yuvType)
	{
		super(ENCODING);
		this.yuvType = yuvType;
		this.dataType = byteArray;
	}
	public YUVFormat(java.awt.Dimension size, int maxDataLength,
			Class dataType, float frameRate, int yuvType,
			int strideY, int strideUV, int offsetY, int offsetU, int offsetV)

	{
		super(ENCODING, size, maxDataLength, dataType, frameRate);
		this.yuvType = yuvType;
		this.strideY = strideY;
		this.strideUV = strideUV;
		this.offsetY = offsetY;
		this.offsetU = offsetU;
		this.offsetV = offsetV;

	}


	public int getYuvType()
	{
		return yuvType;
	}

	public int getStrideY()
	{
		return strideY;
	}
	
	public int getStrideUV()
	{
		return strideUV;
	}
	
	public int getOffsetY()
	{
		return offsetY;
	}
	
	public int getOffsetU()
	{
		return offsetU;
	}

	public int getOffsetV()
	{
		return offsetV;
	}


	public Object clone()
	{
		return new YUVFormat(FormatUtils.clone(size), maxDataLength,
				dataType, frameRate, yuvType,
				strideY, strideUV, offsetY, offsetU, offsetV);
	}

	protected void copy(Format f)
	{
		super.copy(f);
		final YUVFormat oCast = (YUVFormat) f;	// it has to be a YUVFormat, or ClassCastException will be thrown.
		this.yuvType = oCast.yuvType;
		this.strideY = oCast.strideY;
		this.strideUV = oCast.strideUV;
		this.offsetY = oCast.offsetY;
		this.offsetU = oCast.offsetU;
		this.offsetV = oCast.offsetV;

	}

	public boolean equals(Object format)
	{
		if (!super.equals(format))
			return false;
		
		if (!(format instanceof YUVFormat))	
		{
			return false;
		}
		
		final YUVFormat oCast = (YUVFormat) format;
		return 
			this.yuvType == oCast.yuvType &&
			this.strideY == oCast.strideY &&
			this.strideUV == oCast.strideUV &&
			this.offsetY == oCast.offsetY &&
			this.offsetU == oCast.offsetU &&
			this.offsetV == oCast.offsetV;
	}

	
	public boolean matches(Format format)
	{
		if (!super.matches(format))
		{	
			FormatUtils.traceMatches(this, format, false);
			return false;
		}
		
		if (!(format instanceof YUVFormat))
		{	
			final boolean result = true;
			FormatUtils.traceMatches(this, format, result);
			return result;
		}
		
		final YUVFormat oCast = (YUVFormat) format;

		final boolean result = 
			FormatUtils.matches(this.yuvType, oCast.yuvType) &&
			FormatUtils.matches(this.strideY, oCast.strideY) &&
			FormatUtils.matches(this.strideUV, oCast.strideUV) &&
			FormatUtils.matches(this.offsetY, oCast.offsetY) &&
			FormatUtils.matches(this.offsetU, oCast.offsetU) &&
			FormatUtils.matches(this.offsetV, oCast.offsetV);
		
		FormatUtils.traceMatches(this, format, result);
		
		return result;
			
	}
	
	public Format intersects(Format other)
	{
		final Format result = super.intersects(other);
		if (other instanceof YUVFormat)
		{
			final YUVFormat resultCast = (YUVFormat) result;
			
			final YUVFormat oCast = (YUVFormat) other;
			if (getClass().isAssignableFrom(other.getClass()))
			{	
				// "other" was cloned.
				
				if (FormatUtils.specified(this.yuvType))
					resultCast.yuvType = this.yuvType;
				if (FormatUtils.specified(this.strideY))
					resultCast.strideY = this.strideY;
				if (FormatUtils.specified(this.strideUV))
					resultCast.strideUV = this.strideUV;
				if (FormatUtils.specified(this.offsetY))
					resultCast.offsetY = this.offsetY;
				if (FormatUtils.specified(this.offsetU))
					resultCast.offsetU = this.offsetU;
				if (FormatUtils.specified(this.offsetV))
					resultCast.offsetV = this.offsetV;

			}
			else
			{	// this was cloned
				
				if (!FormatUtils.specified(resultCast.yuvType))
					resultCast.yuvType = oCast.yuvType;
				if (!FormatUtils.specified(resultCast.strideY))
					resultCast.strideY = oCast.strideY;
				if (!FormatUtils.specified(resultCast.strideUV))
					resultCast.strideUV = oCast.strideUV;
				if (!FormatUtils.specified(resultCast.offsetY))
					resultCast.offsetY = oCast.offsetY;
				if (!FormatUtils.specified(resultCast.offsetU))
					resultCast.offsetU = oCast.offsetU;
				if (!FormatUtils.specified(resultCast.offsetV))
					resultCast.offsetV = oCast.offsetV;

			}
		}
		
		FormatUtils.traceIntersects(this, other, result);
		
		return result;
	}



	public Format relax()
	{
		final YUVFormat result = (YUVFormat) super.relax();
		result.strideY = NOT_SPECIFIED;
		result.strideUV = NOT_SPECIFIED;
		result.offsetY = NOT_SPECIFIED;
		result.offsetU = NOT_SPECIFIED;
		result.offsetV = NOT_SPECIFIED;
		return result;

	}

	public String toString()
	{
		return "YUV Video Format:" +
			" Size = " + size +
			" MaxDataLength = " + maxDataLength +
			" DataType = " + dataType +
			" yuvType = " + yuvType +
			" StrideY = " + strideY +
			" StrideUV = " + strideUV +
			" OffsetY = " + offsetY +
			" OffsetU = " + offsetU +
			" OffsetV = " + offsetV +
			"\n";
	}
	
	static
	{	// for Serializable compatibility.
	}
}