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* preparations for release 3.1.0

* src/gig.cpp, src/gig.h: fixed behavior regarding the newly added support
  for sample groups, the initial implementation assumed a group index of 0
  in the .gig file to mean "no group assigned" and thus the possibility
  that there might not be a group at all, but in fact the .gig format
  assumes always at least one group (the default group), thus a group index
  of 0 means "member of default group"

* support for Gigasampler's sample groups added

just fixed two little API doc typos

* sample loop parameters are now taken from the DimensionRegion
  instead of the wave chunk
* keyswitching dimension is changed from split type "normal" to "bit"

* added support for more than one custom velocity split inside a
  region

* fixed some memory management errors, one of them was causing a crash
  when a multi-file gig was deallocated

* recommited bugfixes regarding .gig write support
(that commit batch got lost due to the recent CVS server defect)

* src/gig.cpp, src/gig.h:
  - added write support (highly experimental)
  - removed unnecessary definitions from header file
* src/DLS.cpp:
  - try to load instruments/samples before adding a new instrument/sample

* support for the gig v3 feature to have a number of dimension splits
  not equal to a power of two

* fixed the GetVelocityCutoff function, it wasn't always using the
  VCFVelocityScale parameter when no cutoff controller was defined

* added VCFCutoffControllerInvert parameter and GetVelocityCutoff
  function to DimensionRegion

* added support for gig v3 multi-file format

* added DimensionRegion::GetVelocityRelease function

* added functions libraryName() and libraryVersion() to each of the three
  library units (RIFF,DLS,gig)
* all tools now offer a command line switch -v to show the tools revision
  and the used libgig version
* man pages are now auto generated with the correct libgig version

* src/gig.h, src/gig.cpp: API change of progress callback

* src/gig.h, src/gig.cpp: implemented progress indicator callback mechanism
  for loading instruments and samples
* src/DLS.cpp: fixed File constructor which caused variable
  File::Instruments always to be zero
* src/RIFF.cpp: fixed method List::LoadSubChunks() which did not restore
  the original position within the body of the given list chunk

* src/gig.h, src/gig.cpp: 24-bit decompression now supports the 20 and
  18 bit formats
* src/gig.h, src/gig.cpp: added "random" and "round robin" dimensions

* src/gig.h, src/gig.cpp: added pre-calculated sample attenuation
  parameter
* src/gigdump: added output of Gain and SampleStartOffset

* gig::Sample: external decompression buffers can now be used for streaming
  with Read() and ReadAndLoop() to avoid race conditions in case of
  multiple streaming threads
* fixed some memory leaks caused by non virtual base constructors

* src/gig.cpp, src/gig.h, src/gigextract.cpp: Support for compressed
  mono samples. Experimental support for compressed 24 bit
  samples. Fixes for decompression on big-endian CPUs. Fix for bug
  that truncated end of compressed samples.

tiny API doc fix (regarding keyswitching and crossfades)

* src/gig.cpp: fixed some memory leaks (patch by Gene Anders)

* src/gig.h, src/gig.cpp: support for up to 8 dimensions as introduced by
  Gig V3 (patch by Andreas Persson)

* src/gig.cpp, src/gig.h:
  - fixed vcf_type_lowpassturbo value (vcf_type_lowpassturbo was actually
    never used, because the necessary check was made before initialization)
  - fixed crossfade points order (structure for big endian and little
    endian systems was interchanged)

* gig.h oneliner forward declaration of gig::Region.
* Fixed man pages automake install rule.
* Doxygen documentation fix (make docs).

* src/gig.cpp, src/gig.h: applied patch by Andreas Persson which improves
  accuracy of all three velocity response curves

* src/gig.cpp, src/gig.h: added class attribute 'Layers' to class 'Region'
* src/gigdump.cpp: replaced printout of DLS Region layer by printout of
  amount of Gigasampler layers

* src/gig.h, src/gig.cpp: fixed / improved accuracy of all three velocity
  to volume transformation functions (a.k.a. 'nonlinear','linear',
  'special'), denormals are filtered from the velocity to volume tables
* src/gigdump.cpp: added printout of velocity response curve parameters

updated copyright header for 2004

* src/gig.h: changed interface for 'attenuation_ctrl_t', 'eg1_ctrl_t' and
  'eg2_ctrl_t': replaced the huge enumeration by a structure which reflects
  the MIDI controller number in case of an ordinary control change
  controller (this saves a huge switch-case block in the application of the
  library customer)
* src/gig.h: renamed following attributes in class 'DimensionRegion':
 'AttenuationContol' -> 'AttenuationController',
 'InvertAttenuationControl' -> 'InvertAttenuationController',
 'AttenuationControlTreshold' -> 'AttenuationControllerThreshold'
* src/gig.cpp: minor fix in API documentation for method
  'GetVelocityAttenuation()' in class 'DimensionRegion'

* src/gig.cpp, src/gig.h: added ReadAndLoop() method to class 'Sample'
  which is an extension to the normal Read() method to honor the sample's
  looping information while streaming from disk
* src/RIFF.cpp: minor fix in Chunk::Read() method (only a minor efficiency
  issue)
* src/gigdump.cpp: added printout of samples' looping informations

* gig.h, gig.cpp:
  changes in class 'Sample':
  - fixed loop attributes which reflected wrong values
  - attributes 'LoopStart' and 'LoopEnd' are now measured in sample points
    instead of byte offset
  - renamed misleading attribute name 'MIDIPitchFraction' to 'FineTune'
  - added attribute 'LoopSize'
  changes in class 'File':
  - added method GetInstrument(uint index)

* src/gig.cpp, src/gig.h: added method GetVelocityAttenuation() to class
  DimensionRegion which takes the MIDI key velocity value as an argument
  and returns the appropriate volume factor (0.0-1.0) for the sample to be
  be played back, the velocity curve transformation functions used for this
  are only an approximation so far

* src/gig.cpp: fixed bug in decompression algorithm which caused it not to
  detect the end of a stream
* various endian corrections (successfully tested now on ppc)
* minor adjustments to avoid compile errors on some systems
  (using now pow() instead of powl() and --pedantic g++ compiler switch)
* src/RIFF.cpp, src/RIFF.h: added additional API documentation

Initial revision

Initial revision