File	Doc	Category	Size	Date	Package
AsfTagCoverField.java	API Doc	Jaudiotagger 2.0.4	7514	Wed Mar 30 16:12:10 BST 2011	org.jaudiotagger.tag.asf

AsfTagCoverField

• java.lang.Object
  • org.jaudiotagger.tag.asf.AbstractAsfTagImageField

Fields Summary
public static final Logger	LOGGER Logger Object
private String	description Description
private int	endOfName We need this to retrieve the buffered image, if required
private int	imageDataSize Image Data Size as read
private String	mimeType Mimetype of binary
private int	pictureType Picture Type

Constructors Summary
public AsfTagCoverField(byte[] imageData, int pictureType, String description, String mimeType) Create New Image Field param imageData param pictureType param description param mimeType super(new MetadataDescriptor(AsfFieldKey.COVER_ART.getFieldName(), MetadataDescriptor.TYPE_BINARY)); this.getDescriptor() .setBinaryValue( createRawContent(imageData, pictureType, description, mimeType));
public AsfTagCoverField(org.jaudiotagger.audio.asf.data.MetadataDescriptor source) Creates an instance from a metadata descriptor param source The metadata descriptor, whose content is published. super(source); if (!source.getName().equals(AsfFieldKey.COVER_ART.getFieldName())) { throw new IllegalArgumentException( "Descriptor description must be WM/Picture"); } if (source.getType() != MetadataDescriptor.TYPE_BINARY) { throw new IllegalArgumentException("Descriptor type must be binary"); } try { processRawContent(); } catch (final UnsupportedEncodingException uee) { // Should never happen throw new RuntimeException(uee); // NOPMD by Christian Laireiter on 5/9/09 5:45 PM }

Methods Summary
private byte[]	createRawContent(byte[] data, int pictureType, java.lang.String description, java.lang.String mimeType) // NOPMD by Christian Laireiter on 5/9/09 5:46 PM this.description = description; // Get Mimetype from data if not already setField if (mimeType == null) { mimeType = ImageFormats.getMimeTypeForBinarySignature(data); // Couldnt identify lets default to png because probably error in // code because not 100% sure how to identify // formats if (mimeType == null) { LOGGER.warning(ErrorMessage.GENERAL_UNIDENITIFED_IMAGE_FORMAT .getMsg()); mimeType = ImageFormats.MIME_TYPE_PNG; } } final ByteArrayOutputStream baos = new ByteArrayOutputStream(); // PictureType baos.write(pictureType); // ImageDataSize baos.write(org.jaudiotagger.audio.generic.Utils .getSizeLEInt32(data.length), 0, 4); // mimetype byte[] mimeTypeData; try { mimeTypeData = mimeType.getBytes(AsfHeader.ASF_CHARSET.name()); } catch (final UnsupportedEncodingException uee) { // Should never happen throw new RuntimeException("Unable to find encoding:" // NOPMD by Christian Laireiter on 5/9/09 5:45 PM + AsfHeader.ASF_CHARSET.name()); } baos.write(mimeTypeData, 0, mimeTypeData.length); // Seperator baos.write(0x00); baos.write(0x00); // description if (description != null && description.length() > 0) { byte[] descriptionData; try { descriptionData = description.getBytes(AsfHeader.ASF_CHARSET .name()); } catch (final UnsupportedEncodingException uee) { // Should never happen throw new RuntimeException("Unable to find encoding:" // NOPMD by Christian Laireiter on 5/9/09 5:45 PM + AsfHeader.ASF_CHARSET.name()); } baos.write(descriptionData, 0, descriptionData.length); } // Seperator (always write whther or not we have descriptor field) baos.write(0x00); baos.write(0x00); // Image data baos.write(data, 0, data.length); return baos.toByteArray();
public java.lang.String	getDescription() return this.description;
public int	getImageDataSize() return this.imageDataSize;
public java.lang.String	getMimeType() return this.mimeType;
public int	getPictureType() return this.pictureType;
public byte[]	getRawImageData() return the raw image data only final ByteArrayOutputStream baos = new ByteArrayOutputStream(); baos.write(getRawContent(), this.endOfName, this.toWrap .getRawDataSize() - this.endOfName); return baos.toByteArray();
private void	processRawContent() // PictureType this.pictureType = this.getRawContent()[0]; // ImageDataSize this.imageDataSize = org.jaudiotagger.audio.generic.Utils.getIntLE(this .getRawContent(), 1, 2); // Set Count to after picture type,datasize and two byte nulls int count = 5; this.mimeType = null; this.description = null; // Optional int endOfMimeType = 0; while (count < this.getRawContent().length - 1) { if (getRawContent()[count] == 0 && getRawContent()[count + 1] == 0) { if (this.mimeType == null) { this.mimeType = new String(getRawContent(), 5, (count) - 5, "UTF-16LE"); endOfMimeType = count + 2; } else if (this.description == null) { this.description = new String(getRawContent(), endOfMimeType, count - endOfMimeType, "UTF-16LE"); this.endOfName = count + 2; break; } } count += 2; // keep on two byte word boundary }