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Contents of /linuxsampler/trunk/ChangeLog

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Revision 1389 - (show annotations) (download)
Sun Oct 7 14:05:04 2007 UTC (13 years, 6 months ago) by schoenebeck
File size: 16647 byte(s)
* the following LSCP commands now also support escape sequences for at
  least one of their text-based arguments (i.e. name, description):
* the LSCP spec doc now lists all LSCP commands which support escape
  sequences as one of their arguments

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)
12 - fixed buggy boolean --enable-foo / --disable-foo configure script
13 parameters
15 * general changes:
16 - replaced the old, confusing MIDI program change mechanism by a
17 flexible MIDI instrument mapper which allows to map arbitrary
18 (MIDI bank, MIDI program) pairs with arbitrary
19 (engine type, instrument file, file index) triplets which will be
20 loaded on the respective channel when such MIDI program change
21 messages arrive, beside that, each entry allows to define a life-time
22 strategy for the instrument, so the user can define whether the
23 instrument should i.e. be permanently loaded (to be able to switch
24 quickly among sounds) or i.e. loaded just on demand when the
25 respective program change arrives (to safe RAM space), as well as a
26 global volume factor for each entry, so the user can adjust the volume
27 dynamic of his mapped instrument collection without having to modify
28 the instrument files, also one can manage arbitrary amount of such
29 MIDI instrument maps and assign each sampler channel individually
30 a certain map, so that i.e. separation of normal instruments and
31 drumkits is possible
32 - new notification events for tracking changes to audio/MIDI devices,
33 MIDI instrument maps, MIDI instruments, FX sends, global volume.
34 - sampler was limited to load max. 200 instruments in the background
35 due to a constant size RingBuffer FIFO which is now replaced by a
36 dynamic (unlimited) size std::list FIFO
37 - added FX sends, these allow to route audio signals to arbitrary audio
38 output channels for being processed by external effect processors
39 (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
40 controllers
41 - global (sampler wide) volume can now be controlled at runtime
42 - Implemented new, improved notification system
43 - fixed compilation errors regarding OSX
44 (patch by Toshi Nagata)
45 - implemented instruments database
46 - added support for escape sequences to the instruments database
47 - added highly experimental support for on-the-fly instrument editing
48 within the sampler's process (by using instrument editor plugins),
49 you'll notice the new "Registered instrument editors:" message on
50 startup, added a new LSCP command "EDIT INSTRUMENT <sampler-channel>"
51 to spawn a matching instrument editor for the instrument on the
52 given sampler channel, the plugin path can be overridden at compile
53 time with ./configure --enable-plugin-dir=/some/dir
54 - added experimental code for synchronizing instrument editors hosted
55 in the sampler's process to safely edit instruments while playing
56 without a crash (hopefully) by either suspending single regions
57 wherever possible or if unavoidable whole engine(s)
58 - fixed several issues in fundamental "Thread" class: set scheduling
59 policy and priority on thread level, set a minimum stack size for
60 thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
61 threads simply inherited properties of starting thread instead of
62 setting their own policy and priority
63 - minor fix in our automatic stack trace mechanism on crashes, the
64 main process did not wait for the stack trace process to finish
65 its output
66 - fixed some minor memory leaks
67 - reenabled assembly features support, at the moment only for
68 enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
69 - minor assembly fix in x86 features detection (don't use the PIC
70 register, to avoid relocations in the text segment at runtime)
72 * MIDI driver:
73 - dispatch bank select (MSB and LSB) messages
75 * audio driver:
76 - the ALSA audio output driver parameters now reflect the correct
77 parameter value ranges for the respective selected sound card
78 (patch by Till Wimmer, a bit fixed and extended)
80 * Gigasampler format engine:
81 - if a filter is used and EG2 finishes before EG1, let the voice
82 die when EG2 has finished (this fixes a problem with clicks and
83 voice starvation for some gigs)
84 - playback is no longer disabled during instrument loading
85 - all notes playing on a channel that changes its instrument keep
86 playing with the old instrument until they get a note off
87 command
88 - EG fix: a release value of zero could cause noises or crash
89 - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
90 - EG fine tuning: when attack is zero the EG starts at a level
91 above max sustain level, which means that there is a decay phase
92 even if sustain is 100%
93 - more EG fixes: the level could sometimes go below zero and cause
94 noises or crashes
95 - minor fix of EGDecay (patch by Toshi Nagata)
96 - fixed compiler error when --enable-override-filter-type was
97 supplied to the configure script (fixes #46)
98 - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
99 instead of a fix value
100 - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
101 127 (solo mode) only kill voices if the respective mode really
102 changed
104 * LSCP server:
105 - fixed compile time error for old Bison versions
106 (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
107 - parser now supports extended ASCII character set
108 (up to ASCII code 255, i.e. includes now umlauts and accents)
109 - filename arguments in LSCP commands now allow to use escape
110 sequences, that is directly literal as one of: \', \", \\, \n, \r,
111 \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
112 code value like \xf2) (fixes bug #24)
113 - the following LSCP commands now also support escape sequences for at
114 least one of their text-based parameters (i.e. name, description):
121 - returns verbose syntax errors (line and column where syntax error
122 occured, the unexpected character and the actually expected, possible
123 character(s), the latter only if less than 5 possibilities)
124 - made sure that LSCP syntax is not affected by gigedit locale
125 settings
126 - bugfix regarding strings parameter lists: all comma separated lists
127 of strings were treated as being one string containing commas
128 (fixes #57)
130 * Bug fixes:
131 - fixed crash occurring on certain LSCP scripts (Bug 39)
132 - another thread safety fix for lscp "load engine" and "set
133 channel audio output device"
134 - fixed a crash which occurs when reassigning the same engine
135 on a sampler channel with connected MIDI device
136 - fixed a crash which occurs when changing the number of ports of a MIDI
137 device connected to a sampler channel to number less then or equal
138 to the index of the port to which the sampler channel is connected.
139 - The previous bindings were not been disconnected when altering
140 the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
141 unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
142 - The active stream/voice count statistic was incorrect.
143 - notification events were not been sent for some sampler
144 channel changes
145 - added default min and max values to restrict the number of allowed
146 audio output channels and MIDI input ports
147 - the connection to the PCM interface is now closed when destroying
148 an audio output device
149 - files with slash in their path or filename could not be loaded
151 * test cases:
152 - updated and fixed (haven't been touched in a while)
154 Version 0.4.0 (24 November 2006)
156 * packaging changes:
157 - changed deprecated copyright attribute to license; added ldconfig
158 to post-(un)install steps; added devel package for liblinuxsampler;
159 to linuxsampler.spec (RPM)
160 - install necessary development header files for allowing 3rd party
161 applications to link against liblinuxsampler
162 - liblinuxsampler's API documentation can be generated with 'make docs'
163 (Doxygen required)
164 - added benchmark to automatically detect the best triangle LFO
165 implementation (currently either an integer math solution or a
166 di-harmonic approximation), automatic detection can be overriden
167 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
168 configure script argument though (mandatory for cross-compilation)
169 - do not automatically pick optimized gcc flags if the user already
170 provided some on his own (as CXXFLAGS)
171 - added compile time option to disable processing of All-Notes-Off MIDI
172 messages
173 - added compile time options to allow disabling the various audio and
174 MIDI drivers
175 - fixed automatic GCC CPU switch detection on PPC
176 (patch by Ebrahim Mayat)
178 * Gigasampler format engine:
179 - extensive synthesis optimization
180 (reimplementation of EGs and LFO(s), removed synthesis parameter
181 prerendering and the synthesis parameter matrix in general, splitting
182 each audio fragment into subfragments now where each subfragment uses
183 constant pitch and filter coefficients. The volume coefficient is
184 linearly interpolated inside a subfragment, unless
185 --disable-interpolate-volume is set.)
186 - fine tuning of the EG modulation parameters
187 - improved filter cutoff calculation by adding support for the
188 following gig parameters: Cutoff freq (used when no cutoff
189 controller is defined), Control invert, Minimum cutoff, Velocity
190 curve and Velocity range. The keyboard tracking now scales
191 cutoff frequency instead of resonance.
192 - added support for gig parameter Resonance.
193 - fixed bug in sysex handling (patch by Juan Linietsky)
194 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
195 which can be overridden with --enable-global-attenuation
196 - EG fixes: made the length of "attack hold" stage more
197 accurate. Release stage can now start before attack stage
198 ends. Cancel release didn't work when sustain was zero. Attack
199 time now has a minimal value to prevent clicks.
200 - fixed pitch changes larger than one octave
201 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
202 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
203 all modes can be altered via standard GM messages, that is CC5 for
204 altering portamento time, CC65 for enabling / disabling portamento
205 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
206 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
207 parameter) and crossfade
208 - added support for the "attenuation controller threshold" gig
209 parameter
210 - added smoothing of volume changes caused by control change
211 messages
212 - sample loop parameters are now taken from the DimensionRegion
213 instead of the wave chunk
214 - fixed keyswitching for v3 gigs with a number of keyswitch splits
215 not equal to a power of two
216 - reimplementation of the filter algorithm. The new filter is more
217 accurate and supports all gig filter types, including bandreject
218 and lowpass turbo.
219 - real support for 24 bit samples - samples are not truncated to
220 16 bits anymore
221 - support for aftertouch (channel pressure, not polyphonic
222 aftertouch)
223 - LFO1 behaviour fixed (dampening from max volume instead of
224 amplifying from 0)
226 * LSCP server:
227 - fixed application exit on broken pipe error (fixes bug #20)
228 - fixed the notification messages delay due to lack of
229 network activity (fixes bug #26)
230 - fixed parser bug which occured on space(s) within device parameters
233 * audio driver:
234 - added aRts audio output driver (by no means RT safe)
236 * MIDI driver:
237 - fixed legacy sysex code which caused dispatching of MIDI SysEx
238 messages several times instead of once
239 - API extension for MIDI drivers which already supply exact time stamps
240 for events (i.e. for offline rendering based MIDI drivers)
241 - added checks for bad MIDI data
243 * linuxsampler application:
244 - show available sampler engine types on startup
246 * general changes:
247 - support for muting sampler channels and solo mode of the same, two new
248 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
249 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
250 introduced for this, the behavior is the same like on a mixer console
251 (patch by Grigor Iliev, a bit adjusted). Also added configure option
252 --enable-process-muted-channels which can be used to enable the
253 processing of muted channels.
254 - support for sostenuto pedal
255 - support for monitoring the total number of active voices
258 - fixed some memory management errors
259 - fixed some concurrency problems that could lead to crashes when
260 LSCP commands were executed
261 - fixed crash when instrument loading failed previously on the same
262 sampler channel (fixes bug #36)
264 Version 0.3.3 (15 July 2005)
266 * packaging changes:
267 - fixed compilation with gcc 4.0
269 * Gigasampler format engine:
270 - LFO preprocessing was performed even though the respective LFO was
271 disabled by the instrument patch (minor efficiency fix)
272 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
273 for volume ramp downs in the same fragment (needed for current voice
274 stealing implementation) then simply inform the user with a warning
275 about possible click sounds and reduce the volume ramp down
276 appropriately instead of cancelling the audio device connection
278 Version 0.3.2 (24 June 2005)
280 * packaging changes:
281 - updated autotools build files to compile on OS X
282 (conditional compilation of CoreMIDI and MidiShare drivers)
283 - hand-crafted assembly optimization code can be disabled with
284 './configure --disable-asm' (definitely not recommended)
285 - fixed 'make dist' rule to include all necessary files
286 - require automake (>= 1.5) for 'make -f Makefile.cvs'
287 (due to 'dist-bzip2' automake option)
289 * Gigasampler format engine:
290 - support for the gig parameters for "release velocity response" curves
291 - fine tuning of the EGADSR envelope
292 - volume of release triggered samples now depends on note-on velocity,
293 note length and gig parameter "release trigger decay" instead of
294 note-off velocity.
295 - revised voice stealing
296 (fixes crash and endless loop caused by voice stealing)
297 - don't reset scale tuning on instrument or audio output device change
298 - handle key group conflicts right at the beginning of each fragment
299 instead of when the respective voice is actually launched
300 (fixes undefined behavior if stolen voices belonged to a key group -
301 this case was followed by a "killed voice survived" error message)
302 - fixed minor issue with null/silence samples
303 (those stole voices even though they don't need a voice at all which
304 resulted in "voice stealing didn't work out" messages)
305 - don't reset volume, pan, pitch and MIDI controller values on
306 instrument or audio output device change
308 * LSCP server:
309 - fixed some crashes (patch by Grigor Iliev, fixes #19)
310 - fixed LSCP event "CHANNEL_INFO" notification
311 (e.g. did not notify on volume changes or MIDI program change events)
313 * linuxsampler application:
314 - added command line parameters --lscp-addr and --lscp-port to override
315 default IP address and port of LSCP server
317 Version 0.3.1 (24 May 2005)
319 * initial release

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