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package org.apache.poi.ddf;

import org.apache.poi.util.IOUtils;
import org.apache.poi.util.LittleEndian;

The BSE record is related closely to the EscherBlipRecord and stores extra information about the blip. A blip record is actually stored inside the BSE record even though the BSE record isn't actually a container record.
See Also:
/** * The BSE record is related closely to the {@code EscherBlipRecord} and stores * extra information about the blip. A blip record is actually stored inside * the BSE record even though the BSE record isn't actually a container record. * * @see EscherBlipRecord */
public final class EscherBSERecord extends EscherRecord { //arbitrarily selected; may need to increase private static final int MAX_RECORD_LENGTH = 100_000; public static final short RECORD_ID = (short) 0xF007; public static final String RECORD_DESCRIPTION = "MsofbtBSE"; public static final byte BT_ERROR = 0; public static final byte BT_UNKNOWN = 1; public static final byte BT_EMF = 2; public static final byte BT_WMF = 3; public static final byte BT_PICT = 4; public static final byte BT_JPEG = 5; public static final byte BT_PNG = 6; public static final byte BT_DIB = 7; private byte field_1_blipTypeWin32; private byte field_2_blipTypeMacOS; private final byte[] field_3_uid = new byte[16]; private short field_4_tag; private int field_5_size; private int field_6_ref; private int field_7_offset; private byte field_8_usage; private byte field_9_name; private byte field_10_unused2; private byte field_11_unused3; private EscherBlipRecord field_12_blipRecord; private byte[] _remainingData = new byte[0]; public EscherBSERecord() { setRecordId(RECORD_ID); } @Override public int fillFields(byte[] data, int offset, EscherRecordFactory recordFactory) { int bytesRemaining = readHeader( data, offset ); int pos = offset + 8; field_1_blipTypeWin32 = data[pos]; field_2_blipTypeMacOS = data[pos + 1]; System.arraycopy( data, pos + 2, field_3_uid, 0, 16 ); field_4_tag = LittleEndian.getShort( data, pos + 18 ); field_5_size = LittleEndian.getInt( data, pos + 20 ); field_6_ref = LittleEndian.getInt( data, pos + 24 ); field_7_offset = LittleEndian.getInt( data, pos + 28 ); field_8_usage = data[pos + 32]; field_9_name = data[pos + 33]; field_10_unused2 = data[pos + 34]; field_11_unused3 = data[pos + 35]; bytesRemaining -= 36; int bytesRead = 0; if (bytesRemaining > 0) { // Some older escher formats skip this last record field_12_blipRecord = (EscherBlipRecord) recordFactory.createRecord( data, pos + 36 ); bytesRead = field_12_blipRecord.fillFields( data, pos + 36, recordFactory ); } pos += 36 + bytesRead; bytesRemaining -= bytesRead; _remainingData = IOUtils.safelyAllocate(bytesRemaining, MAX_RECORD_LENGTH); System.arraycopy( data, pos, _remainingData, 0, bytesRemaining ); return bytesRemaining + 8 + 36 + (field_12_blipRecord == null ? 0 : field_12_blipRecord.getRecordSize()) ; } @Override public int serialize(int offset, byte[] data, EscherSerializationListener listener) { listener.beforeRecordSerialize( offset, getRecordId(), this ); if (_remainingData == null) { _remainingData = new byte[0]; } LittleEndian.putShort( data, offset, getOptions() ); LittleEndian.putShort( data, offset + 2, getRecordId() ); int blipSize = field_12_blipRecord == null ? 0 : field_12_blipRecord.getRecordSize(); int remainingBytes = _remainingData.length + 36 + blipSize; LittleEndian.putInt( data, offset + 4, remainingBytes ); data[offset + 8] = field_1_blipTypeWin32; data[offset + 9] = field_2_blipTypeMacOS; System.arraycopy(field_3_uid, 0, data, offset + 10, 16); LittleEndian.putShort( data, offset + 26, field_4_tag ); LittleEndian.putInt( data, offset + 28, field_5_size ); LittleEndian.putInt( data, offset + 32, field_6_ref ); LittleEndian.putInt( data, offset + 36, field_7_offset ); data[offset + 40] = field_8_usage; data[offset + 41] = field_9_name; data[offset + 42] = field_10_unused2; data[offset + 43] = field_11_unused3; int bytesWritten = 0; if (field_12_blipRecord != null) { bytesWritten = field_12_blipRecord.serialize( offset + 44, data, new NullEscherSerializationListener() ); } System.arraycopy( _remainingData, 0, data, offset + 44 + bytesWritten, _remainingData.length ); int pos = offset + 8 + 36 + _remainingData.length + bytesWritten; listener.afterRecordSerialize(pos, getRecordId(), pos - offset, this); return pos - offset; } @Override public int getRecordSize() { int field_12_size = 0; if(field_12_blipRecord != null) { field_12_size = field_12_blipRecord.getRecordSize(); } int remaining_size = 0; if(_remainingData != null) { remaining_size = _remainingData.length; } return 8 + 1 + 1 + 16 + 2 + 4 + 4 + 4 + 1 + 1 + 1 + 1 + field_12_size + remaining_size; } @Override public String getRecordName() { return "BSE"; }
The expected blip type under windows (failure to match this blip type will result in Excel converting to this format).
Returns:win32 blip type
/** * The expected blip type under windows (failure to match this blip type will result in * Excel converting to this format). * * @return win32 blip type */
public byte getBlipTypeWin32() { return field_1_blipTypeWin32; }
Set the expected win32 blip type
Params:
  • blipTypeWin32 – win32 blip type
/** * Set the expected win32 blip type * * @param blipTypeWin32 win32 blip type */
public void setBlipTypeWin32(byte blipTypeWin32) { field_1_blipTypeWin32 = blipTypeWin32; }
The expected blip type under MacOS (failure to match this blip type will result in Excel converting to this format).
Returns:MacOS blip type
/** * The expected blip type under MacOS (failure to match this blip type will result in * Excel converting to this format). * * @return MacOS blip type */
public byte getBlipTypeMacOS() { return field_2_blipTypeMacOS; }
Set the expected MacOS blip type
Params:
  • blipTypeMacOS – MacOS blip type
/** * Set the expected MacOS blip type * * @param blipTypeMacOS MacOS blip type */
public void setBlipTypeMacOS(byte blipTypeMacOS) { field_2_blipTypeMacOS = blipTypeMacOS; }
16 byte MD4 checksum.
Returns:16 byte MD4 checksum
/** * 16 byte MD4 checksum. * * @return 16 byte MD4 checksum */
public byte[] getUid() { return field_3_uid; }
16 byte MD4 checksum.
Params:
  • uid – 16 byte MD4 checksum
/** * 16 byte MD4 checksum. * * @param uid 16 byte MD4 checksum */
public void setUid(byte[] uid) { if (uid == null || uid.length != 16) { throw new IllegalArgumentException("uid must be byte[16]"); } System.arraycopy(uid, 0, field_3_uid, 0, field_3_uid.length); }
unused
Returns:an unknown tag
/** * unused * * @return an unknown tag */
public short getTag() { return field_4_tag; }
unused
Params:
  • tag – unknown tag
/** * unused * * @param tag unknown tag */
public void setTag(short tag) { field_4_tag = tag; }
Blip size in stream.
Returns:the blip size
/** * Blip size in stream. * * @return the blip size */
public int getSize() { return field_5_size; }
Blip size in stream.
Params:
  • size – blip size
/** * Blip size in stream. * * @param size blip size */
public void setSize(int size) { field_5_size = size; }
The reference count of this blip.
Returns:the reference count
/** * The reference count of this blip. * * @return the reference count */
public int getRef() { return field_6_ref; }
The reference count of this blip.
Params:
  • ref – the reference count
/** * The reference count of this blip. * * @param ref the reference count */
public void setRef(int ref) { field_6_ref = ref; }
File offset in the delay stream.
Returns:the file offset
/** * File offset in the delay stream. * * @return the file offset */
public int getOffset() { return field_7_offset; }
File offset in the delay stream.
Params:
  • offset – the file offset
/** * File offset in the delay stream. * * @param offset the file offset */
public void setOffset(int offset) { field_7_offset = offset; }
Defines the way this blip is used.
Returns:the blip usage
/** * Defines the way this blip is used. * * @return the blip usage */
public byte getUsage() { return field_8_usage; }
Defines the way this blip is used.
Params:
  • usage – the blip usae
/** * Defines the way this blip is used. * * @param usage the blip usae */
public void setUsage(byte usage) { field_8_usage = usage; }
The length in characters of the blip name.
Returns:the blip name length
/** * The length in characters of the blip name. * * @return the blip name length */
public byte getName() { return field_9_name; }
The length in characters of the blip name.
Params:
  • name – the blip name length
/** * The length in characters of the blip name. * * @param name the blip name length */
public void setName(byte name) { field_9_name = name; } public byte getUnused2() { return field_10_unused2; } public void setUnused2(byte unused2) { field_10_unused2 = unused2; } public byte getUnused3() { return field_11_unused3; } public void setUnused3(byte unused3) { field_11_unused3 = unused3; } public EscherBlipRecord getBlipRecord() { return field_12_blipRecord; } public void setBlipRecord(EscherBlipRecord blipRecord) { field_12_blipRecord = blipRecord; }
Any remaining data in this record.
Returns:the remaining bytes
/** * Any remaining data in this record. * * @return the remaining bytes */
public byte[] getRemainingData() { return _remainingData; }
Any remaining data in this record.
Params:
  • remainingData – the remaining bytes
/** * Any remaining data in this record. * * @param remainingData the remaining bytes */
public void setRemainingData(byte[] remainingData) { _remainingData = (remainingData == null) ? new byte[0] : remainingData.clone(); }
Retrieve the string representation given a blip id.
Params:
  • b – the blip type byte-encoded
Returns:the blip type as string
/** * Retrieve the string representation given a blip id. * * @param b the blip type byte-encoded * * @return the blip type as string */
public static String getBlipType(byte b) { switch (b) { case BT_ERROR: return " ERROR"; case BT_UNKNOWN: return " UNKNOWN"; case BT_EMF: return " EMF"; case BT_WMF: return " WMF"; case BT_PICT: return " PICT"; case BT_JPEG: return " JPEG"; case BT_PNG: return " PNG"; case BT_DIB: return " DIB"; } if ( b < 32 ) { return " NotKnown"; } return " Client"; } @Override protected Object[][] getAttributeMap() { return new Object[][] { { "BlipTypeWin32", field_1_blipTypeWin32 }, { "BlipTypeMacOS", field_2_blipTypeMacOS }, { "SUID", field_3_uid }, { "Tag", field_4_tag }, { "Size", field_5_size }, { "Ref", field_6_ref }, { "Offset", field_7_offset }, { "Usage", field_8_usage }, { "Name", field_9_name }, { "Unused2", field_10_unused2 }, { "Unused3", field_11_unused3 }, { "Blip Record", field_12_blipRecord }, { "Extra Data", _remainingData } }; } }