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Contents of /linuxsampler/trunk/ChangeLog

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Revision 1212 - (show annotations) (download)
Tue May 29 23:59:36 2007 UTC (13 years, 4 months ago) by schoenebeck
File size: 12618 byte(s)
* added highly experimental support for on-the-fly instrument editing
  within the sampler's process (by using instrument editor plugins),
  you'll notice the new "Registered instrument editors:" message on
  startup, the plugin path can be overridden at compile time with
  ./configure --enable-plugin-dir=/some/dir
* added a new LSCP command "EDIT INSTRUMENT <sampler-channel>" to spawn
  a matching instrument editor for the instrument on the given sampler
  channel (LSCP command syntax might be subject to change soon)
* config.h is not going to be installed along with liblinuxsampler's
  API header files anymore (not necessary anymore)
* take care of $(DESTDIR) when creating the instruments DB on 'make
  install' rule (needed for packaging and cross compilation)
* bumped version to

1 Version CVS HEAD (?)
3 * packaging changes:
4 - config.h is not going to be installed along with liblinuxsampler's
5 API header files anymore
6 - only the API relevant header (and source) files will be exported to
7 the Doxygen API documentation (explicitly listed in Doxyfile.in)
8 - added completely new XCode project files for Mac OSX which is now
9 capable to execute our autoconf environment, thus no need anymore
10 to maintain the compile time configuration file (osx/version.h) for
11 OSX manually (patch by Toshi Nagata)
13 * general changes:
14 - replaced the old, confusing MIDI program change mechanism by a
15 flexible MIDI instrument mapper which allows to map arbitrary
16 (MIDI bank, MIDI program) pairs with arbitrary
17 (engine type, instrument file, file index) triplets which will be
18 loaded on the respective channel when such MIDI program change
19 messages arrive, beside that, each entry allows to define a life-time
20 strategy for the instrument, so the user can define whether the
21 instrument should i.e. be permanently loaded (to be able to switch
22 quickly among sounds) or i.e. loaded just on demand when the
23 respective program change arrives (to safe RAM space), as well as a
24 global volume factor for each entry, so the user can adjust the volume
25 dynamic of his mapped instrument collection without having to modify
26 the instrument files, also one can manage arbitrary amount of such
27 MIDI instrument maps and assign each sampler channel individually
28 a certain map, so that i.e. separation of normal instruments and
29 drumkits is possible
30 - new notification events for tracking changes to audio/MIDI devices,
31 MIDI instrument maps, MIDI instruments, FX sends, global volume.
32 - sampler was limited to load max. 200 instruments in the background
33 due to a constant size RingBuffer FIFO which is now replaced by a
34 dynamic (unlimited) size std::list FIFO
35 - added FX sends, these allow to route audio signals to arbitrary audio
36 output channels for being processed by external effect processors
37 (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
38 controllers
39 - global (sampler wide) volume can now be controlled at runtime
40 - Implemented new, improved notification system
41 - fixed compilation errors regarding OSX
42 (patch by Toshi Nagata)
43 - implemented instruments database
44 - added highly experimental support for on-the-fly instrument editing
45 within the sampler's process (by using instrument editor plugins),
46 you'll notice the new "Registered instrument editors:" message on
47 startup, added a new LSCP command "EDIT INSTRUMENT <sampler-channel>"
48 to spawn a matching instrument editor for the instrument on the
49 given sampler channel, the plugin path can be overridden at compile
50 time with ./configure --enable-plugin-dir=/some/dir
52 * MIDI driver:
53 - dispatch bank select (MSB and LSB) messages
55 * audio driver:
56 - the ALSA audio output driver parameters now reflect the correct
57 parameter value ranges for the respective selected sound card
58 (patch by Till Wimmer, a bit fixed and extended)
60 * Gigasampler format engine:
61 - if a filter is used and EG2 finishes before EG1, let the voice
62 die when EG2 has finished (this fixes a problem with clicks and
63 voice starvation for some gigs)
64 - playback is no longer disabled during instrument loading
65 - all notes playing on a channel that changes its instrument keep
66 playing with the old instrument until they get a note off
67 command
68 - EG fix: a release value of zero could cause noises or crash
69 - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
70 - EG fine tuning: when attack is zero the EG starts at a level
71 above max sustain level, which means that there is a decay phase
72 even if sustain is 100%
73 - more EG fixes: the level could sometimes go below zero and cause
74 noises or crashes
75 - minor fix of EGDecay (patch by Toshi Nagata)
76 - fixed compiler error when --enable-override-filter-type was
77 supplied to the configure script (fixes #46)
79 * Bug fixes:
80 - fixed crash occurring on certain LSCP scripts (Bug 39)
81 - another thread safety fix for lscp "load engine" and "set
82 channel audio output device"
84 Version 0.4.0 (24 November 2006)
86 * packaging changes:
87 - changed deprecated copyright attribute to license; added ldconfig
88 to post-(un)install steps; added devel package for liblinuxsampler;
89 to linuxsampler.spec (RPM)
90 - install necessary development header files for allowing 3rd party
91 applications to link against liblinuxsampler
92 - liblinuxsampler's API documentation can be generated with 'make docs'
93 (Doxygen required)
94 - added benchmark to automatically detect the best triangle LFO
95 implementation (currently either an integer math solution or a
96 di-harmonic approximation), automatic detection can be overriden
97 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
98 configure script argument though (mandatory for cross-compilation)
99 - do not automatically pick optimized gcc flags if the user already
100 provided some on his own (as CXXFLAGS)
101 - added compile time option to disable processing of All-Notes-Off MIDI
102 messages
103 - added compile time options to allow disabling the various audio and
104 MIDI drivers
105 - fixed automatic GCC CPU switch detection on PPC
106 (patch by Ebrahim Mayat)
108 * Gigasampler format engine:
109 - extensive synthesis optimization
110 (reimplementation of EGs and LFO(s), removed synthesis parameter
111 prerendering and the synthesis parameter matrix in general, splitting
112 each audio fragment into subfragments now where each subfragment uses
113 constant pitch and filter coefficients. The volume coefficient is
114 linearly interpolated inside a subfragment, unless
115 --disable-interpolate-volume is set.)
116 - fine tuning of the EG modulation parameters
117 - improved filter cutoff calculation by adding support for the
118 following gig parameters: Cutoff freq (used when no cutoff
119 controller is defined), Control invert, Minimum cutoff, Velocity
120 curve and Velocity range. The keyboard tracking now scales
121 cutoff frequency instead of resonance.
122 - added support for gig parameter Resonance.
123 - fixed bug in sysex handling (patch by Juan Linietsky)
124 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
125 which can be overridden with --enable-global-attenuation
126 - EG fixes: made the length of "attack hold" stage more
127 accurate. Release stage can now start before attack stage
128 ends. Cancel release didn't work when sustain was zero. Attack
129 time now has a minimal value to prevent clicks.
130 - fixed pitch changes larger than one octave
131 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
132 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
133 all modes can be altered via standard GM messages, that is CC5 for
134 altering portamento time, CC65 for enabling / disabling portamento
135 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
136 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
137 parameter) and crossfade
138 - added support for the "attenuation controller threshold" gig
139 parameter
140 - added smoothing of volume changes caused by control change
141 messages
142 - sample loop parameters are now taken from the DimensionRegion
143 instead of the wave chunk
144 - fixed keyswitching for v3 gigs with a number of keyswitch splits
145 not equal to a power of two
146 - reimplementation of the filter algorithm. The new filter is more
147 accurate and supports all gig filter types, including bandreject
148 and lowpass turbo.
149 - real support for 24 bit samples - samples are not truncated to
150 16 bits anymore
151 - support for aftertouch (channel pressure, not polyphonic
152 aftertouch)
153 - LFO1 behaviour fixed (dampening from max volume instead of
154 amplifying from 0)
156 * LSCP server:
157 - fixed application exit on broken pipe error (fixes bug #20)
158 - fixed the notification messages delay due to lack of
159 network activity (fixes bug #26)
160 - fixed parser bug which occured on space(s) within device parameters
163 * audio driver:
164 - added aRts audio output driver (by no means RT safe)
166 * MIDI driver:
167 - fixed legacy sysex code which caused dispatching of MIDI SysEx
168 messages several times instead of once
169 - API extension for MIDI drivers which already supply exact time stamps
170 for events (i.e. for offline rendering based MIDI drivers)
171 - added checks for bad MIDI data
173 * linuxsampler application:
174 - show available sampler engine types on startup
176 * general changes:
177 - support for muting sampler channels and solo mode of the same, two new
178 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
179 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
180 introduced for this, the behavior is the same like on a mixer console
181 (patch by Grigor Iliev, a bit adjusted). Also added configure option
182 --enable-process-muted-channels which can be used to enable the
183 processing of muted channels.
184 - support for sostenuto pedal
185 - support for monitoring the total number of active voices
188 - fixed some memory management errors
189 - fixed some concurrency problems that could lead to crashes when
190 LSCP commands were executed
191 - fixed crash when instrument loading failed previously on the same
192 sampler channel (fixes bug #36)
194 Version 0.3.3 (15 July 2005)
196 * packaging changes:
197 - fixed compilation with gcc 4.0
199 * Gigasampler format engine:
200 - LFO preprocessing was performed even though the respective LFO was
201 disabled by the instrument patch (minor efficiency fix)
202 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
203 for volume ramp downs in the same fragment (needed for current voice
204 stealing implementation) then simply inform the user with a warning
205 about possible click sounds and reduce the volume ramp down
206 appropriately instead of cancelling the audio device connection
208 Version 0.3.2 (24 June 2005)
210 * packaging changes:
211 - updated autotools build files to compile on OS X
212 (conditional compilation of CoreMIDI and MidiShare drivers)
213 - hand-crafted assembly optimization code can be disabled with
214 './configure --disable-asm' (definitely not recommended)
215 - fixed 'make dist' rule to include all necessary files
216 - require automake (>= 1.5) for 'make -f Makefile.cvs'
217 (due to 'dist-bzip2' automake option)
219 * Gigasampler format engine:
220 - support for the gig parameters for "release velocity response" curves
221 - fine tuning of the EGADSR envelope
222 - volume of release triggered samples now depends on note-on velocity,
223 note length and gig parameter "release trigger decay" instead of
224 note-off velocity.
225 - revised voice stealing
226 (fixes crash and endless loop caused by voice stealing)
227 - don't reset scale tuning on instrument or audio output device change
228 - handle key group conflicts right at the beginning of each fragment
229 instead of when the respective voice is actually launched
230 (fixes undefined behavior if stolen voices belonged to a key group -
231 this case was followed by a "killed voice survived" error message)
232 - fixed minor issue with null/silence samples
233 (those stole voices even though they don't need a voice at all which
234 resulted in "voice stealing didn't work out" messages)
235 - don't reset volume, pan, pitch and MIDI controller values on
236 instrument or audio output device change
238 * LSCP server:
239 - fixed some crashes (patch by Grigor Iliev, fixes #19)
240 - fixed LSCP event "CHANNEL_INFO" notification
241 (e.g. did not notify on volume changes or MIDI program change events)
243 * linuxsampler application:
244 - added command line parameters --lscp-addr and --lscp-port to override
245 default IP address and port of LSCP server
247 Version 0.3.1 (24 May 2005)
249 * initial release

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