The minimum file format version for this tag is SWF 10. DefineBitsJPEG4 Field
Type
Comment
Header
RECORDHEADER (long)
Tag type = 90.
CharacterID
UI16
ID for this character.
AlphaDataOffset
UI32
Count of bytes in ImageData.
DeblockParam
UI16
Parameter to be fed into the deblocking filter. The parameter describes a relative strength of the deblocking filter from 0100% expressed in a normalized 8.8 fixed point format.
ImageData
UI8[data size]
Compressed image data in either JPEG, PNG, or GIF89a format.
BitmapAlphaData
UI8[alpha data size]
ZLIB compressed array of alpha data. Only supported when tag contains JPEG data. One byte per pixel. Total size after decompression must equal (width * height) of JPEG image.
DefineBitsJPEG4
155