CVS log for linuxsampler/ChangeLog
	Help

Request diff between arbitrary revisions / Display revisions graphically

* global volume can now be altered at runtime
  (added two new LSCP commands for this, LSCP specs updated)

* implemented effect sends (also added new LSCP commands for this feature,
  updated LSCP spec document along with this commit batch as well)

forgot to commit ChangeLog

* Added new notification events for tracking audio/MIDI device changes,
MIDI instrument map changes and MIDI instrument changes

* revised and extended MIDI instrument mapping feature to allow managing
  arbitrary amount of maps and assigning each sampler channel individually
  to one map (this commit batch includes LSCP spec document update and
  respective implementation on LS side)

* fixed crash occurring on certain LSCP scripts (Bug 39)

- added forgotten notice in ChangeLog
- fixed LIST MIDI_INSTRUMENTS

* implemented MIDI instrument mapping according to latest LSCP draft

* preparations for release 0.4.0

* fixed crash when instrument loading failed previously on the same
  sampler channel (fixes bug #36)

* small fix of LFO1 behaviour (dampening from max volume instead of
  amplifying from 0)
* added checks for bad MIDI data

* little configure.in fix for PPC
  (patch by Ebrahim Mayat)

* MIDI driver API extension for MIDI drivers which already supply exact
  time stamps for events (i.e. for offline rendering based MIDI drivers)

* real support for 24 bit samples - samples are not truncated to 16
  bits anymore
* support for aftertouch (channel pressure, not polyphonic aftertouch)

* src/Sampler.h, src/Sampler.cpp: allow 3rd party applications to
  retrieve available drivers and sampler engines
* src/linuxsampler.cpp: show available engines on startup (on the console)

* new filter implementation, which is more accurate and supports all
  filter types including bandreject and lowpass turbo

* packaging changes:
    - changed deprecated copyright attribute to license; added ldconfig
      to post-(un)install steps; added devel package for liblinuxsampler;
      to linuxsampler.spec (RPM)

* sample loop parameters are now taken from the DimensionRegion
  instead of the wave chunk
* fixed keyswitching for v3 gigs with a number of keyswitch splits not
  equal to a power of two

* added compile time options to allow disabling the various audio and MIDI
  drivers (./configure --disable-foo-driver)

* added compile time option to disable processing of All-Notes-Off
  MIDI messages

* fixed concurrency problems between the main thread doing
  lscp notifications and the lscp thread
* bug fix: the LFOs were not properly initialized

* fixed some concurrency problems between the lscp thread and the
  audio/midi threads for these commands: load engine, set channel
  audio output device, set channel midi input device/port/channel and
  remove channel. Thanks to Vincent Bongiorno for bug reports and
  testing.
* removed an autotools warning
* fixed an iterator bug
* minor code clean-ups

* added aRts audio output driver (by no means RT safe)

* fixed some memory management errors

* added smoothing of volume changes caused by control change messages
* fine tuning of the crossfade volume curve

* fixed global pan (CC10) which hasn't been working for a while
* fine tuning of the curves for volume (CC7) and pan (CC10 and gig
  parameter)
* added support for the "attenuation controller threshold" gig
  parameter

* added linear interpolation of volume modulation inside a
  subfragment; this prevents clicks during voice stealing. Can be
  switched off with the --disable-interpolate-volume configure option.

* implemented portamento mode and solo mode (a.k.a 'mono mode'):
  all modes can be altered via standard GM messages, that is CC5 for
  altering portamento time, CC65 for enabling / disabling portamento
  mode, CC126 for enabling solo mode and CC127 for disabling solo mode
* fixed EG3 (pitch envelope) synthesis which was neutral all the time
* configure.in: do not automatically pick optimized gcc flags if the user
  already provided some on his own (as CXXFLAGS)

* bugfix in LSCP parser which was confused by space(s) within device
  parameters
  (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
* changed version to 0.3.3cvs

* Bug-fixes: pitch changes larger than one octave didn't work. Looped
  samples small enough to fit in RAM didn't work.

* minor EG fine tuning: attack time now has a minimum value to prevent
  clicks

* fixed the notification messages delay due to lack of
network activity (fixes bug #26)

* Filter tuning: calculation of cutoff frequency and bandwidth
  improved. Removed use of "BasicBPFilter". Changed bandpass filter
  from constant peak to constant skirt. Use gig parameter Resonance if
  no resonance controller is set. Removed keyboard tracking influence
  on resonance.

* EG fixes: the length of "attack hold" stage was wrong. Release stage
  can now start before attack stage ends. Cancel release didn't work
  when sustain was zero.

* fixed event handling bug which was introduced by the recent synthesis
  optimizations (events were only processed for the first active voice)
* added global volume attenuation of -9 dB (0.35f) to prevent clipping
  which can be overridden with --enable-global-attenuation

* Added new LSCP commands: GET TOTAL_VOICE_COUNT,
GET TOTAL_VOICE_COUNT_MAX, SUBSCRIBE/UNSUBSCRIBE TOTAL_VOICE_COUNT

Added new LSCP commands: GET TOTAL_VOICE_COUNT,
GET TOTAL_VOICE_COUNT_MAX, SUBSCRIBE/UNSUBSCRIBE TOTAL_VOICE_COUNT

- Added support for sostenuto pedal

* src/drivers/MidiInputPort.cpp: fixed legacy SysEx code which caused
  dispatching of MIDI SysEx messages several times instead of once
* src/engines/gig/Engine.cpp: fixed bug in SysEx handling
  (patch by Juan Linietsky)

* extensive synthesis optimization: reimplementation of EGs and LFO(s),
  removed synthesis parameter prerendering and the synthesis parameter
  matrix in general, splitting each audio fragment into subfragments now
  where each subfragment uses constant synthesis parameters
  (everything's still very buggy ATM)

* improved filter cutoff calculation by adding support for the
  following gig parameters: Cutoff freq (used when no cutoff
  controller is defined), Control invert, Minimum cutoff, Velocity
  curve and Velocity range. The keyboard tracking now also scales
  cutoff frequency, not just resonance.

* Added configure option --enable-process-muted-channels
which can be used to enable the processing of muted channels

added benchmark to automatically detect the best triangle LFO
implementation (currently either an integer math solution or a
di-harmonic approximation), automatic detection can be overriden
with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
configure script argument though (mandatory for cross-compilation)
---
actual implementation of the new LFO implementations in LS will follow soon

updated ChangeLog to Grigor's latest changes

* support for muting sampler channels and solo mode of the same, two new
  LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
  fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
  introduced for this (patch by Grigor Iliev, a bit adjusted)

* install necessary development header files for allowing 3rd party
  applications to link against liblinuxsampler
* liblinuxsampler's API documentation can be generated with 'make docs'
  (Doxygen required)

* fine tuning of the EG modulation parameters

* preparation for bugfix release 0.3.3

* if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
  then simply show a warning about possible click sounds and reduce the
  volume ramp down appropriately instead of cancelling the audio device
  connection

* minor efficiency fix (LFO preprocessing was performed even though the
  respective LFO was disabled by the instrument patch)

oops, the last change is not contained in release 0.3.2

* gcc 4.0 compilation fixes

* final preparations for bugfix release 0.3.2

* don't reset volume, pan, pitch and MIDI controller values on instrument
  or audio output device change
* send 'CHANNEL_INFO' LSCP event on MIDI program change messages

* fixed minor issue with null/silence samples
  (those stole voices even though they don't need a voice at all which
  resulted in "voice stealing didn't work out" messages)

* fixed a key group bug which caused undefined behavior in conjunction with
  stolen voices (this case was usually followed by a "killed voice
  survived" or "voice stealing didn't work out" error message)

* another voice stealing fix
  (endless loop occured when voices were stolen from other engine channels)

* LSCP server: fixed LSCP event "CHANNEL_INFO" notification
  (e.g. did not notify on volume changes)

* don't reset scale tuning on instrument or audio output device change

* fixed 'make dist' build rule to include all necessary files

* revised voice stealing (fixes crash caused by voice stealing)

* volume of release triggered samples now depends on note-on velocity,
  note length and gig parameter "release trigger decay" instead of
  note-off velocity.

* fixed some crashs in LSCP server
  (patch by Grigor Iliev, fixes #19)

* hand-crafted assembly optimization code can be disabled with
  './configure --disable-asm' (definitely not recommended)

* support for the gig parameters for "release velocity response"
  curves, which means the decay and release times now depends on
  velocity. The softer velocity, the longer release.
* fine tuning of the envelope curves. Decay1 and release now have two
  parts, first linear and then exponential at the end.

* updated autotools build files for conditional compilation of CoreMIDI
  (OS X) and MidiShare (Linux, OS X, Windows) drivers

* src/network/lscpserver.cpp: fixed segfault
  (patch by Grigor Iliev, fixes #17)
* added man page
* final preparations for the first official release (which will be 0.3.1)