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Revision 1233 - (show annotations) (download)
Mon Jun 11 13:42:21 2007 UTC (12 years, 6 months ago) by schoenebeck
File size: 13185 byte(s)
* minor fix in our automatic stack trace mechanism on crashes, the
  main process did not wait for the stack trace process to finish
  and thus killed the whole application before the stack trace was
  completely shown on the console

1 Version CVS HEAD (?)
2
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)
12
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
51 - fixed several issues in fundamental "Thread" class: set scheduling
52 policy and priority on thread level, set a minimum stack size for
53 thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
54 threads simply inherited properties of starting thread instead of
55 setting their own policy and priority
56 - minor fix in our automatic stack trace mechanism on crashes, the
57 main process did not wait for the stack trace process to finish
58 its output
59
60 * MIDI driver:
61 - dispatch bank select (MSB and LSB) messages
62
63 * audio driver:
64 - the ALSA audio output driver parameters now reflect the correct
65 parameter value ranges for the respective selected sound card
66 (patch by Till Wimmer, a bit fixed and extended)
67
68 * Gigasampler format engine:
69 - if a filter is used and EG2 finishes before EG1, let the voice
70 die when EG2 has finished (this fixes a problem with clicks and
71 voice starvation for some gigs)
72 - playback is no longer disabled during instrument loading
73 - all notes playing on a channel that changes its instrument keep
74 playing with the old instrument until they get a note off
75 command
76 - EG fix: a release value of zero could cause noises or crash
77 - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
78 - EG fine tuning: when attack is zero the EG starts at a level
79 above max sustain level, which means that there is a decay phase
80 even if sustain is 100%
81 - more EG fixes: the level could sometimes go below zero and cause
82 noises or crashes
83 - minor fix of EGDecay (patch by Toshi Nagata)
84 - fixed compiler error when --enable-override-filter-type was
85 supplied to the configure script (fixes #46)
86
87 * Bug fixes:
88 - fixed crash occurring on certain LSCP scripts (Bug 39)
89 - another thread safety fix for lscp "load engine" and "set
90 channel audio output device"
91
92 * test cases:
93 - updated and fixed (haven't been touched in a while)
94
95 Version 0.4.0 (24 November 2006)
96
97 * packaging changes:
98 - changed deprecated copyright attribute to license; added ldconfig
99 to post-(un)install steps; added devel package for liblinuxsampler;
100 to linuxsampler.spec (RPM)
101 - install necessary development header files for allowing 3rd party
102 applications to link against liblinuxsampler
103 - liblinuxsampler's API documentation can be generated with 'make docs'
104 (Doxygen required)
105 - added benchmark to automatically detect the best triangle LFO
106 implementation (currently either an integer math solution or a
107 di-harmonic approximation), automatic detection can be overriden
108 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
109 configure script argument though (mandatory for cross-compilation)
110 - do not automatically pick optimized gcc flags if the user already
111 provided some on his own (as CXXFLAGS)
112 - added compile time option to disable processing of All-Notes-Off MIDI
113 messages
114 - added compile time options to allow disabling the various audio and
115 MIDI drivers
116 - fixed automatic GCC CPU switch detection on PPC
117 (patch by Ebrahim Mayat)
118
119 * Gigasampler format engine:
120 - extensive synthesis optimization
121 (reimplementation of EGs and LFO(s), removed synthesis parameter
122 prerendering and the synthesis parameter matrix in general, splitting
123 each audio fragment into subfragments now where each subfragment uses
124 constant pitch and filter coefficients. The volume coefficient is
125 linearly interpolated inside a subfragment, unless
126 --disable-interpolate-volume is set.)
127 - fine tuning of the EG modulation parameters
128 - improved filter cutoff calculation by adding support for the
129 following gig parameters: Cutoff freq (used when no cutoff
130 controller is defined), Control invert, Minimum cutoff, Velocity
131 curve and Velocity range. The keyboard tracking now scales
132 cutoff frequency instead of resonance.
133 - added support for gig parameter Resonance.
134 - fixed bug in sysex handling (patch by Juan Linietsky)
135 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
136 which can be overridden with --enable-global-attenuation
137 - EG fixes: made the length of "attack hold" stage more
138 accurate. Release stage can now start before attack stage
139 ends. Cancel release didn't work when sustain was zero. Attack
140 time now has a minimal value to prevent clicks.
141 - fixed pitch changes larger than one octave
142 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
143 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
144 all modes can be altered via standard GM messages, that is CC5 for
145 altering portamento time, CC65 for enabling / disabling portamento
146 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
147 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
148 parameter) and crossfade
149 - added support for the "attenuation controller threshold" gig
150 parameter
151 - added smoothing of volume changes caused by control change
152 messages
153 - sample loop parameters are now taken from the DimensionRegion
154 instead of the wave chunk
155 - fixed keyswitching for v3 gigs with a number of keyswitch splits
156 not equal to a power of two
157 - reimplementation of the filter algorithm. The new filter is more
158 accurate and supports all gig filter types, including bandreject
159 and lowpass turbo.
160 - real support for 24 bit samples - samples are not truncated to
161 16 bits anymore
162 - support for aftertouch (channel pressure, not polyphonic
163 aftertouch)
164 - LFO1 behaviour fixed (dampening from max volume instead of
165 amplifying from 0)
166
167 * LSCP server:
168 - fixed application exit on broken pipe error (fixes bug #20)
169 - fixed the notification messages delay due to lack of
170 network activity (fixes bug #26)
171 - fixed parser bug which occured on space(s) within device parameters
172 (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
173
174 * audio driver:
175 - added aRts audio output driver (by no means RT safe)
176
177 * MIDI driver:
178 - fixed legacy sysex code which caused dispatching of MIDI SysEx
179 messages several times instead of once
180 - API extension for MIDI drivers which already supply exact time stamps
181 for events (i.e. for offline rendering based MIDI drivers)
182 - added checks for bad MIDI data
183
184 * linuxsampler application:
185 - show available sampler engine types on startup
186
187 * general changes:
188 - support for muting sampler channels and solo mode of the same, two new
189 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
190 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
191 introduced for this, the behavior is the same like on a mixer console
192 (patch by Grigor Iliev, a bit adjusted). Also added configure option
193 --enable-process-muted-channels which can be used to enable the
194 processing of muted channels.
195 - support for sostenuto pedal
196 - support for monitoring the total number of active voices
197 (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
198 SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
199 - fixed some memory management errors
200 - fixed some concurrency problems that could lead to crashes when
201 LSCP commands were executed
202 - fixed crash when instrument loading failed previously on the same
203 sampler channel (fixes bug #36)
204
205 Version 0.3.3 (15 July 2005)
206
207 * packaging changes:
208 - fixed compilation with gcc 4.0
209
210 * Gigasampler format engine:
211 - LFO preprocessing was performed even though the respective LFO was
212 disabled by the instrument patch (minor efficiency fix)
213 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
214 for volume ramp downs in the same fragment (needed for current voice
215 stealing implementation) then simply inform the user with a warning
216 about possible click sounds and reduce the volume ramp down
217 appropriately instead of cancelling the audio device connection
218
219 Version 0.3.2 (24 June 2005)
220
221 * packaging changes:
222 - updated autotools build files to compile on OS X
223 (conditional compilation of CoreMIDI and MidiShare drivers)
224 - hand-crafted assembly optimization code can be disabled with
225 './configure --disable-asm' (definitely not recommended)
226 - fixed 'make dist' rule to include all necessary files
227 - require automake (>= 1.5) for 'make -f Makefile.cvs'
228 (due to 'dist-bzip2' automake option)
229
230 * Gigasampler format engine:
231 - support for the gig parameters for "release velocity response" curves
232 - fine tuning of the EGADSR envelope
233 - volume of release triggered samples now depends on note-on velocity,
234 note length and gig parameter "release trigger decay" instead of
235 note-off velocity.
236 - revised voice stealing
237 (fixes crash and endless loop caused by voice stealing)
238 - don't reset scale tuning on instrument or audio output device change
239 - handle key group conflicts right at the beginning of each fragment
240 instead of when the respective voice is actually launched
241 (fixes undefined behavior if stolen voices belonged to a key group -
242 this case was followed by a "killed voice survived" error message)
243 - fixed minor issue with null/silence samples
244 (those stole voices even though they don't need a voice at all which
245 resulted in "voice stealing didn't work out" messages)
246 - don't reset volume, pan, pitch and MIDI controller values on
247 instrument or audio output device change
248
249 * LSCP server:
250 - fixed some crashes (patch by Grigor Iliev, fixes #19)
251 - fixed LSCP event "CHANNEL_INFO" notification
252 (e.g. did not notify on volume changes or MIDI program change events)
253
254 * linuxsampler application:
255 - added command line parameters --lscp-addr and --lscp-port to override
256 default IP address and port of LSCP server
257
258 Version 0.3.1 (24 May 2005)
259
260 * initial release

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