Changes to Dali

Diff of release 1.0 and 1.0 beta 1

Bug Fixes

• Fixed : Bugs in the example mpgtoppm.c.

New Features

Major

• Makefiles now support the "clibs" target. "make clibs" will compile the C libraries only.
• Katen Mayer-Patel of UC Berkerley contributed functions that perform addition and multiplication on ByteImage and ScImage.
• Three new image types are added : Byte16Image, Byte32Image, and FloatImage. These images contain pixels of type 16-bit ints, 32-bit ints and 32-bit floats.
• A set of "Mux" operations are provided on ByteImage. This allows operations on selected columns of the ByteImage. Useful for ByteImages that contain interleaving RGB or YUV data.

Diff of alpha 2 and beta 1

Bug Fixes

• Fixed : Memory errors in ByteShrinkBilinear.
• Fixed : AudioMapInit..() now copies the mapping values from the input table, rather than just point it's pointer to the input table.
• Fixed : the field version in GifSeqHdr should be an array of 4.
• Fixed : GifImgHdrSetTopPosition() actually sets the left position.
• Fixed : Color conversion is more accurate, and is faster.

Changes

• JpegHdrEncode no longer encodes the APP section, the Huffman tables and quantization tables. JpegQtEncode and JpegHtEncode is added to perform the encoding of the tables.
• Parsing and encoding in JPEG now returns the number of bytes read/written, just like MPEG.
• Various name changed for consistency : JPEG_QT to JpegQt, JPEG_HT to JpegHt, WaveHeader to WaveHdr, BsCastToAudio to BitStreamCastToAudio.
• GifImgEncode() is now separated into two : GifImgInterlacedEncode() and GifImgNonInterlacedEncode().
• Faster GIF encoding, using lookup table.
• GifHdrNew no longer initialize the header (just like all other ..HdrNew()).
• GifSeqImgNums() is removed (it can be replaced by calls to GifImgFind() and GifImgSkip()).
• GifSeqImgNums() is removed (it can be replaced by calls to GifImgFind() and GifImgSkip())
• The order of arguments to Audio8Merge() and Audio16Merge() is changed : we always takes in the input first follows by the output.

New Features

Major

• dvmsh for Win32.
• Supports for and MPEG-1 Video Encoding.
• Supports for JPEG Encoding.
• Resampling of Audio buffers is now supported.
• Audio buffers can now be played on Win32 platforms.
• New MPEG video indexing mechanism allows decoding of arbitrary frames.
• Virtual Images can now be reused using Reclip() primitives.
• Better documentations with indices.

Bug Fixes

Diff of alpha 1 and alpha 2

Bug Fixes

• Fixed : Color Quantization failed when input image has less than 256 colors.
• Fixed : MpegSysToc is not created correctly when a packet header is truncated in BitStream.
• Fixed : ByteScale/ByteExpand no longers modifies the size of the output ByteImage
• Fixed : MpegPicHdrFind did not return -1 if the picture header is not found.
• Remove a bunch of compiler's warnings.
• Fixed bug in mpegpic.c, where MpegPicPParse does not initialize motion vector correctly when parsing skipped macroblock.
• MpegXxxFind, MpegXxxSkip, MpegXxxDump now returns -1 if BitStream becomes underflow.
• Fixed bugs in BitStream's reading primitives. Currently Dalì does not update bitstream's pointer correctly after reading.
• Fixed a bug in PbmParse, which does not update BitParser's cursor correctly
• Fixed a bug in sqrtable.c. It should declare the table as unsigned short instead of short (fixed)
• Fixed a bug in byte_rotate.

New Features

Major

• Audio Buffers can now be played through Windows95/NT.
• Display package is added. This uses Tk.
• AVI package is added. This is layered on top Video For Windows.
• Improved support for MPEG system streams. MpegPktHdr, MpegPckHdr and MpegSysHdr is now exposed. An example to demux system stream using MpegPktHdr is added.
• A new DvmColor package is added. The DvmColor package performs function such as color conversion and color quantization. A new type ColorHashTable is also added to the package.

  Minor

• MpegPicSkip is added to skip over a picture data. This is needed since MpegAnyHdrFind stops at slice header now.
• MpegSysTocListFilters is added. It lists the available streams in Sys Toc.
• Macro Bp_DataRemain is added in bitparser.h
• BitParserGetBitStream returns the bitstream the bitparser is attached to.
• FindXxx API which maps a pointer in C to a variable name in Tcl. (eg. FindByteImage)
• ScIToByte, and YuvToRgbXXX color conversion is now faster.
• MpegAnyHdrFind now finds all markers. (Previously it only finds SeqHdr, GopHdr and PicHdr).
• Add documentation to (previously undocumented) primitves RgbToY and BitStreamDump.
• Color conversion is moved from DvmBasic to DvmColor. Color quantization is moved from DvmGif to DvmColor. Color quantization is rewritten for faster performance and make use of the ColorHashTable structure.
• Rename virtual in ByteImage, BitImage, ScImage, VectorImage, Audio and BitStream to isVirtual. This is to avoid conflict with C++ keyword virtual.
• Rename BitStreamFileFilter to BitStreamFileFilterIn
• Add bitstreamfio.c to makefile.vc. This is in unix/Makefile but not in win/Makefile.vc in alpha 1 release.
• Add three functions to BitStreamFilter : StartScan which reset the filter cursor, Write() which output the filter to a file, and Read() which create a filter from a file.
• BitStreamDumpUsingFilter added.

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