File	Doc	Category	Size	Date	Package
JPEGImageWriteParam.java	API Doc	Android 1.5 API	6245	Wed May 06 22:41:54 BST 2009	javax.imageio.plugins.jpeg

JPEGImageWriteParam

• java.lang.Object
  • javax.imageio.IIOParam
    • javax.imageio.ImageWriteParam

Fields Summary
private static final float[]	COMP_QUALITY_VALUES The Constant COMP_QUALITY_VALUES.
private static final String[]	COMP_QUALITY_DESCRIPTIONS The Constant COMP_QUALITY_DESCRIPTIONS.
private JPEGQTable[]	qTables The q tables.
private JPEGHuffmanTable[]	dcHuffmanTables The dc huffman tables.
private JPEGHuffmanTable[]	acHuffmanTables The ac huffman tables.
private boolean	optimizeHuffmanTables The optimize huffman tables.

Constructors Summary

public JPEGImageWriteParam(Locale locale) Instantiates a new JPEGImageWriteParam object with the specified Locale. param locale the Locale. super(locale); canWriteProgressive = true; progressiveMode = ImageWriteParam.MODE_DISABLED; canWriteCompressed = true; compressionTypes = new String[] { "JPEG" }; compressionType = compressionTypes[0]; compressionQuality = JPEGConsts.DEFAULT_JPEG_COMPRESSION_QUALITY;

Methods Summary
public boolean	areTablesSet() Returns true if tables are set, false otherwise. return true, if tables are set, false otherwise. return qTables != null;
public javax.imageio.plugins.jpeg.JPEGHuffmanTable[]	getACHuffmanTables() Gets the AC Huffman tables. return the AC Huffman tables which are set, or null. return acHuffmanTables == null ? null : acHuffmanTables.clone();
public java.lang.String[]	getCompressionQualityDescriptions() super.getCompressionQualityDescriptions(); return COMP_QUALITY_DESCRIPTIONS.clone();
public float[]	getCompressionQualityValues() super.getCompressionQualityValues(); return COMP_QUALITY_VALUES.clone();
public javax.imageio.plugins.jpeg.JPEGHuffmanTable[]	getDCHuffmanTables() Gets the DC Huffman tables. return the DC Huffman tables which are set, or null. return dcHuffmanTables == null ? null : dcHuffmanTables.clone();
public boolean	getOptimizeHuffmanTables() Returns true if the writer generates optimized Huffman tables, false otherwise. return true, if the writer generates optimized Huffman tables, false otherwise. return optimizeHuffmanTables;
public javax.imageio.plugins.jpeg.JPEGQTable[]	getQTables() Gets the quantization tables. return the quantization tables, or null. return qTables == null ? null : qTables.clone();
public boolean	isCompressionLossless() if (getCompressionMode() != MODE_EXPLICIT) { throw new IllegalStateException("Compression mode not MODE_EXPLICIT!"); } return false;
public void	setEncodeTables(javax.imageio.plugins.jpeg.JPEGQTable[] qTables, javax.imageio.plugins.jpeg.JPEGHuffmanTable[] DCHuffmanTables, javax.imageio.plugins.jpeg.JPEGHuffmanTable[] ACHuffmanTables) Sets the quantization and Huffman tables for using in encoding streams. param qTables the quantization tables. param DCHuffmanTables the standart DC Huffman tables. param ACHuffmanTables the standart AC huffman tables. if (qTables == null || DCHuffmanTables == null || ACHuffmanTables == null) { throw new IllegalArgumentException("Invalid JPEG table arrays"); } if (DCHuffmanTables.length != ACHuffmanTables.length) { throw new IllegalArgumentException("Invalid JPEG table arrays"); } if (qTables.length > 4 || DCHuffmanTables.length > 4) { throw new IllegalArgumentException("Invalid JPEG table arrays"); } // Do the shallow copy, it should be enough this.qTables = qTables.clone(); dcHuffmanTables = DCHuffmanTables.clone(); acHuffmanTables = ACHuffmanTables.clone();
public void	setOptimizeHuffmanTables(boolean optimize) Sets the flag indicated that the writer will generate optimized Huffman tables for the image as part of the writing process. param optimize the flag of optimizing huffman tables. optimizeHuffmanTables = optimize;
public void	unsetCompression() if (getCompressionMode() != MODE_EXPLICIT) { throw new IllegalStateException("Compression mode not MODE_EXPLICIT!"); } compressionQuality = JPEGConsts.DEFAULT_JPEG_COMPRESSION_QUALITY;
public void	unsetEncodeTables() Unset all encoded tables. qTables = null; dcHuffmanTables = null; acHuffmanTables = null;