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Java - JMF Simple Filter

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  1. import java.awt.Dimension;
  2.  
  3. import javax.media.Buffer;
  4. import javax.media.Effect;
  5. import javax.media.Format;
  6. import javax.media.ResourceUnavailableException;
  7. import javax.media.format.RGBFormat;
  8.  
  9. public class SimpleFilter implements Effect
  10. {
  11. 	protected Format inputFormat = null;
  12. 	protected Format outputFormat = null;
  13.  
  14. 	protected Format[] inputFormats = null;
  15. 	protected Format[] outputFormats = null;
  16.  
  17. 	public AngelMotionCodec()
  18. 	{
  19. 		inputFormats = new Format[]{ new RGBFormat(null, Format.NOT_SPECIFIED, Format.byteArray, Format.NOT_SPECIFIED, 24, 3, 2, 1, 3, Format.NOT_SPECIFIED, Format.TRUE, Format.NOT_SPECIFIED) };
  20. 		outputFormats = new Format[]{ new RGBFormat(null, Format.NOT_SPECIFIED, Format.byteArray, Format.NOT_SPECIFIED, 24, 3, 2, 1, 3, Format.NOT_SPECIFIED, Format.TRUE, Format.NOT_SPECIFIED) };
  21. 	}
  22.  
  23. 	/****** Codec ******/
  24. 	public Format[] getSupportedInputFormats()
  25. 	{
  26. 		return inputFormats;
  27. 	}
  28.  
  29. 	public Format[] getSupportedOutputFormats(Format input)
  30. 	{
  31. 		if(input != null)
  32. 		{
  33. 			if(matches(input, inputFormats) != null)
  34. 				return new Format[]{ outputFormats[0].intersects(input) };
  35. 			else
  36. 				return new Format[0];
  37. 		}
  38.  
  39. 		return outputFormats;
  40. 	}
  41.  
  42. 	public int process(Buffer input, Buffer output)
  43. 	{
  44. 		// Swap tra input & output
  45. 		Object tmp = input.getData();
  46.  
  47. 		input.setData(output.getData());
  48. 		output.setData(tmp);
  49.  
  50. 		return BUFFER_PROCESSED_OK;
  51. 	}
  52.  
  53. 	public Format setInputFormat(Format input)
  54. 	{
  55. 		inputFormat = input;
  56.  
  57. 		return input;
  58. 	}
  59.  
  60. 	public Format setOutputFormat(Format output)
  61. 	{
  62. 		if(output != null || matches(output, outputFormats) != null)
  63. 		{
  64. 			RGBFormat inRGB = (RGBFormat) output;
  65.  
  66. 			Dimension size = inRGB.getSize();
  67. 			int maxDataLength = inRGB.getMaxDataLength();
  68. 			int lineStride = inRGB.getLineStride();
  69. 			int flipped = inRGB.getFlipped();
  70.  
  71. 			if(size == null)
  72. 				return null;
  73.  
  74. 			if(maxDataLength < size.width*size.height*3)
  75. 				maxDataLength = size.width*size.height*3;
  76.  
  77. 			if(lineStride < size.width*3)
  78. 				lineStride = size.width*3;
  79.  
  80. 			if(flipped != Format.FALSE)
  81. 				flipped = Format.FALSE;
  82.  
  83. 			outputFormat = outputFormats[0].intersects(new RGBFormat(size, maxDataLength, inRGB.getDataType(), inRGB.getFrameRate(), inRGB.getBitsPerPixel(), inRGB.getRedMask(), inRGB.getGreenMask(), inRGB.getBlueMask(), inRGB.getPixelStride(), lineStride, flipped, inRGB.getEndian()));
  84.  
  85. 			return outputFormat;
  86. 		}
  87.  
  88. 		return null;
  89. 	}
  90. 	/****** Codec ******/
  91.  
  92. 	/****** PlugIn ******/
  93. 	public void close()
  94. 	{
  95.  
  96. 	}
  97.  
  98. 	public String getName()
  99. 	{
  100. 		return "Simple-Filter";
  101. 	}
  102.  
  103. 	public void open() throws ResourceUnavailableException
  104. 	{
  105.  
  106. 	}
  107.  
  108. 	public void reset()
  109. 	{
  110.  
  111. 	}
  112. 	/****** PlugIn ******/
  113.  
  114. 	/****** Controls ******/
  115. 	public Object getControl(String controlType)
  116. 	{
  117. 		return null;
  118. 	}
  119.  
  120. 	public Object[] getControls()
  121. 	{
  122. 		return null;
  123. 	}
  124. 	/****** Controls ******/
  125.  
  126. 	/****** Utility ******/
  127. 	private Format matches(Format in, Format[] out)
  128. 	{
  129. 		if(in != null && out != null)
  130. 		{
  131. 			for(int i=0, cnt=out.length; i<cnt; i++)
  132. 			{
  133. 				if(in.matches(out[i]))
  134. 					return out[i];
  135. 			}
  136. 		}
  137.  
  138. 		return null;
  139. 	}
  140. 	/****** Utility ******/
  141. }

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