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Contents of /linuxsampler/trunk/ChangeLog

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Revision 1687 - (show annotations) (download)
Thu Feb 14 14:59:30 2008 UTC (15 years, 9 months ago) by schoenebeck
File size: 21471 byte(s)
- added new LSCP event "CHANNEL_MIDI" which can be used by frontends to
  react on MIDI data arriving on certain sampler channels (so far only
  Note-On and Note-Off events are sent via this LSCP event)
- bumped LSCP compliance version to 1.4
- bumped LS version to

1 Version CVS HEAD (?)
3 * packaging changes:
4 - autoconf bugfix: the PKG_CONFIG variable wasn't initialized properly,
5 causing e.g. the libgig test to fail when
6 "./configure --disable-jack-driver" was used
7 (patch by Alexis Ballier)
9 * general changes:
10 - bugfix: on some POSIX systems instrument editor plugins refused to
11 load as we used a non-portable Linux specific struct field
12 (fixes bug #70, patch by Ronald Baljeu)
13 - fixed endless loop which occured when loading an instrument editor
14 plugin DLL on Windows systems failed
15 - fixed memory leaks that occurred when liblinuxsampler was unloaded
16 - optimized the SynchronizedConfig class so it doesn't wait
17 unnecessarily long after an update
18 - added support for notifying instrument editors on note-on / note-off
19 events (e.g. to highlight the pressed keys on the virtual keyboard
20 of gigedit)
21 - added support for triggering notes by instrument editors (see above)
22 - be verbose on DLL load errors (on Linux)
23 - fixed di-harmonic triangle LFO implementation (this LFO implementation
24 is only used by very few systems, most pick the int math
25 implementation, which is usually faster)
27 * audio driver:
28 - removed the nonsense audio channel constraint (which was hard coded to
29 max. 100 audio channels) for most audio drivers
30 - JACK audio driver did not offer a device parameter "SAMPLERATE" as
31 opposed to the LSCP specs
32 - bugfix: the SAMPLERATE parameter of some drivers (e.g. JACK)
33 reflected the wrong value
34 - fixed a memory management bug in ASIO driver
36 * MIDI driver:
37 - added JACK MIDI driver
39 * instruments database:
40 - avoid time consuming samples scanning when adding instruments
41 to the instruments database
43 * Gigasampler format engine:
44 - fixed a memory leak that could happen when a channel was deleted
45 while notes were playing
46 - made it possible to load an instrument even if the audio thread
47 isn't running
49 * LSCP server:
50 - added new LSCP event "CHANNEL_MIDI" which can be used by frontends to
51 react on MIDI data arriving on certain sampler channels (so far only
52 Note-On and Note-Off events are sent via this LSCP event)
54 Version 0.5.1 (6 December 2007)
56 * packaging changes:
57 - added autoconf checks for pthread library
58 - added autoconf check for pthread bug found on certain NPTL-enabled
59 glibc versions (see Gentoo bug report #194076)
60 - added autoconf checks for MS Windows
62 * general changes:
63 - bugfix: the thread used by an editor plugin didn't die when the
64 editor closed
65 - bugfix: Ringbuffer.h: fill_write_space_with_null() did not zero
66 out all the space. operator--() did not apply size_mask after
67 decrementing the read_ptr. DEFAULT_WRAP_ELEMENTS set to 0 in
68 order to avoid problems with the _NonVolatileReader functions.
69 - bugfix: Stream.h: added a missing divide by BytesPerSample in
70 GetWriteSpace(). Since this function is currently only used in
71 the stream's qsort() compare function, it didn't trigger any
72 bugs.
73 - Resampler.h, Synthesizer.h: cubic interpolation now works in
74 24bit mode too. Faster method to read 24bit words on little
75 endian machines (x86): replaced 3 byte reads + shifts with a 1
76 unaligned 32bit read and shift
77 - experimental support for MS Windows (MIDI input via MME, AUDIO
78 output via ASIO)
79 - made handling of SIGINT signal (Ctrl-C) a bit more robust
80 - support for monitoring the total number of active disk streams
81 (new LSCP commands: GET TOTAL_STREAM_COUNT,
84 * AUDIO driver:
85 - added Windows ASIO low latency audio driver
87 * MIDI driver:
88 - added MME Windows MIDI driver
90 * LSCP server:
91 - added support for Windows style path / filenames, however with
92 forward slash path separators instead of backslash
93 (i.e. "C:/foo/bar.gig")
94 - allow naughty liblscp to send non-string device parameters within
95 apostrophes as well
96 - added new LSCP commands: "GET FILE INSTRUMENTS <file>",
98 "GET FILE INSTRUMENT INFO <file> <index>" for retrieving informations
99 about an arbitrary instrument file on the system where the sampler is
100 running on
102 Version 0.5.0 (15 October 2007)
104 * packaging changes:
105 - config.h is not going to be installed along with liblinuxsampler's
106 API header files anymore
107 - only the API relevant header (and source) files will be exported to
108 the Doxygen API documentation (explicitly listed in Doxyfile.in)
109 - added completely new XCode project files for Mac OSX which is now
110 capable to execute our autoconf environment, thus no need anymore
111 to maintain the compile time configuration file (osx/version.h) for
112 OSX manually (patch by Toshi Nagata)
113 - fixed buggy boolean --enable-foo / --disable-foo configure script
114 parameters
115 - global.h now only covers global definitions that are needed for the
116 C++ API header files, all implementation internal global definitions
117 are now in global_private.h
118 - atomic.h is not exposed to the C++ API anymore
119 - no need to include config.h anymore for using LS's API header files
120 - fixed warnings in API doc generation
122 * general changes:
123 - replaced the old, confusing MIDI program change mechanism by a
124 flexible MIDI instrument mapper which allows to map arbitrary
125 (MIDI bank, MIDI program) pairs with arbitrary
126 (engine type, instrument file, file index) triplets which will be
127 loaded on the respective channel when such MIDI program change
128 messages arrive, beside that, each entry allows to define a life-time
129 strategy for the instrument, so the user can define whether the
130 instrument should i.e. be permanently loaded (to be able to switch
131 quickly among sounds) or i.e. loaded just on demand when the
132 respective program change arrives (to safe RAM space), as well as a
133 global volume factor for each entry, so the user can adjust the volume
134 dynamic of his mapped instrument collection without having to modify
135 the instrument files, also one can manage arbitrary amount of such
136 MIDI instrument maps and assign each sampler channel individually
137 a certain map, so that i.e. separation of normal instruments and
138 drumkits is possible
139 - new notification events for tracking changes to audio/MIDI devices,
140 MIDI instrument maps, MIDI instruments, FX sends, global volume.
141 - sampler was limited to load max. 200 instruments in the background
142 due to a constant size RingBuffer FIFO which is now replaced by a
143 dynamic (unlimited) size std::list FIFO
144 - added FX sends, these allow to route audio signals to arbitrary audio
145 output channels for being processed by external effect processors
146 (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
147 controllers
148 - global (sampler wide) volume can now be controlled at runtime
149 - Implemented new, improved notification system
150 - fixed compilation errors regarding OSX
151 (patch by Toshi Nagata)
152 - implemented instruments database
153 - added support for escape sequences to the instruments database
154 - added highly experimental support for on-the-fly instrument editing
155 within the sampler's process (by using instrument editor plugins),
156 you'll notice the new "Registered instrument editors:" message on
157 startup, added a new LSCP command:
158 "EDIT CHANNEL INSTRUMENT <sampler-channel>"
159 to spawn a matching instrument editor for the instrument on the
160 given sampler channel, the plugin path can be overridden at compile
161 time with ./configure --enable-plugin-dir=/some/dir
162 - added experimental code for synchronizing instrument editors hosted
163 in the sampler's process to safely edit instruments while playing
164 without a crash (hopefully) by either suspending single regions
165 wherever possible or if unavoidable whole engine(s)
166 - fixed several issues in fundamental "Thread" class: set scheduling
167 policy and priority on thread level, set a minimum stack size for
168 thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
169 threads simply inherited properties of starting thread instead of
170 setting their own policy and priority
171 - minor fix in our automatic stack trace mechanism on crashes, the
172 main process did not wait for the stack trace process to finish
173 its output
174 - fixed some minor memory leaks
175 - reenabled assembly features support, at the moment only for
176 enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
177 - minor assembly fix in x86 features detection (don't use the PIC
178 register, to avoid relocations in the text segment at runtime)
179 - POSIX callback functions of Thread.h are hidden
181 * MIDI driver:
182 - dispatch bank select (MSB and LSB) messages
184 * audio driver:
185 - the ALSA audio output driver parameters now reflect the correct
186 parameter value ranges for the respective selected sound card
187 (patch by Till Wimmer, a bit fixed and extended)
189 * Gigasampler format engine:
190 - if a filter is used and EG2 finishes before EG1, let the voice
191 die when EG2 has finished (this fixes a problem with clicks and
192 voice starvation for some gigs)
193 - playback is no longer disabled during instrument loading
194 - all notes playing on a channel that changes its instrument keep
195 playing with the old instrument until they get a note off
196 command
197 - EG fix: a release value of zero could cause noises or crash
198 - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
199 - EG fine tuning: when attack is zero the EG starts at a level
200 above max sustain level, which means that there is a decay phase
201 even if sustain is 100%
202 - more EG fixes: the level could sometimes go below zero and cause
203 noises or crashes
204 - minor fix of EGDecay (patch by Toshi Nagata)
205 - fixed compiler error when --enable-override-filter-type was
206 supplied to the configure script (fixes #46)
207 - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
208 instead of a fix value
209 - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
210 127 (solo mode) only kill voices if the respective mode really
211 changed
213 * LSCP server:
214 - fixed compile time error for old Bison versions
215 (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
216 - parser now supports extended ASCII character set
217 (up to ASCII code 255, i.e. includes now umlauts and accents)
218 - filename arguments in LSCP commands now allow to use escape
219 sequences, that is directly literal as one of: \', \", \\, \n, \r,
220 \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
221 code value like \xf2) (fixes bug #24)
222 - the following LSCP commands now also support escape sequences for at
223 least one of their text-based parameters (i.e. name, description):
230 - returns verbose syntax errors (line and column where syntax error
231 occured, the unexpected character and the actually expected, possible
232 character(s), the latter only if less than 5 possibilities)
233 - made sure that LSCP syntax is not affected by gigedit locale
234 settings
235 - bugfix regarding strings parameter lists: all comma separated lists
236 of strings were treated as being one string containing commas
237 (fixes #57)
239 * Bug fixes:
240 - fixed crash occurring on certain LSCP scripts (Bug 39)
241 - another thread safety fix for lscp "load engine" and "set
242 channel audio output device"
243 - fixed a crash which occurs when reassigning the same engine
244 on a sampler channel with connected MIDI device
245 - fixed a crash which occurs when changing the number of ports of a MIDI
246 device connected to a sampler channel to number less then or equal
247 to the index of the port to which the sampler channel is connected.
248 - The previous bindings were not been disconnected when altering
249 the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
250 unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
251 - The active stream/voice count statistic was incorrect.
252 - notification events were not been sent for some sampler
253 channel changes
254 - added default min and max values to restrict the number of allowed
255 audio output channels and MIDI input ports
256 - the connection to the PCM interface is now closed when destroying
257 an audio output device
258 - files with slash in their path or filename could not be loaded
260 * test cases:
261 - updated and fixed (haven't been touched in a while)
263 Version 0.4.0 (24 November 2006)
265 * packaging changes:
266 - changed deprecated copyright attribute to license; added ldconfig
267 to post-(un)install steps; added devel package for liblinuxsampler;
268 to linuxsampler.spec (RPM)
269 - install necessary development header files for allowing 3rd party
270 applications to link against liblinuxsampler
271 - liblinuxsampler's API documentation can be generated with 'make docs'
272 (Doxygen required)
273 - added benchmark to automatically detect the best triangle LFO
274 implementation (currently either an integer math solution or a
275 di-harmonic approximation), automatic detection can be overriden
276 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
277 configure script argument though (mandatory for cross-compilation)
278 - do not automatically pick optimized gcc flags if the user already
279 provided some on his own (as CXXFLAGS)
280 - added compile time option to disable processing of All-Notes-Off MIDI
281 messages
282 - added compile time options to allow disabling the various audio and
283 MIDI drivers
284 - fixed automatic GCC CPU switch detection on PPC
285 (patch by Ebrahim Mayat)
287 * Gigasampler format engine:
288 - extensive synthesis optimization
289 (reimplementation of EGs and LFO(s), removed synthesis parameter
290 prerendering and the synthesis parameter matrix in general, splitting
291 each audio fragment into subfragments now where each subfragment uses
292 constant pitch and filter coefficients. The volume coefficient is
293 linearly interpolated inside a subfragment, unless
294 --disable-interpolate-volume is set.)
295 - fine tuning of the EG modulation parameters
296 - improved filter cutoff calculation by adding support for the
297 following gig parameters: Cutoff freq (used when no cutoff
298 controller is defined), Control invert, Minimum cutoff, Velocity
299 curve and Velocity range. The keyboard tracking now scales
300 cutoff frequency instead of resonance.
301 - added support for gig parameter Resonance.
302 - fixed bug in sysex handling (patch by Juan Linietsky)
303 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
304 which can be overridden with --enable-global-attenuation
305 - EG fixes: made the length of "attack hold" stage more
306 accurate. Release stage can now start before attack stage
307 ends. Cancel release didn't work when sustain was zero. Attack
308 time now has a minimal value to prevent clicks.
309 - fixed pitch changes larger than one octave
310 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
311 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
312 all modes can be altered via standard GM messages, that is CC5 for
313 altering portamento time, CC65 for enabling / disabling portamento
314 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
315 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
316 parameter) and crossfade
317 - added support for the "attenuation controller threshold" gig
318 parameter
319 - added smoothing of volume changes caused by control change
320 messages
321 - sample loop parameters are now taken from the DimensionRegion
322 instead of the wave chunk
323 - fixed keyswitching for v3 gigs with a number of keyswitch splits
324 not equal to a power of two
325 - reimplementation of the filter algorithm. The new filter is more
326 accurate and supports all gig filter types, including bandreject
327 and lowpass turbo.
328 - real support for 24 bit samples - samples are not truncated to
329 16 bits anymore
330 - support for aftertouch (channel pressure, not polyphonic
331 aftertouch)
332 - LFO1 behaviour fixed (dampening from max volume instead of
333 amplifying from 0)
335 * LSCP server:
336 - fixed application exit on broken pipe error (fixes bug #20)
337 - fixed the notification messages delay due to lack of
338 network activity (fixes bug #26)
339 - fixed parser bug which occured on space(s) within device parameters
342 * audio driver:
343 - added aRts audio output driver (by no means RT safe)
345 * MIDI driver:
346 - fixed legacy sysex code which caused dispatching of MIDI SysEx
347 messages several times instead of once
348 - API extension for MIDI drivers which already supply exact time stamps
349 for events (i.e. for offline rendering based MIDI drivers)
350 - added checks for bad MIDI data
352 * linuxsampler application:
353 - show available sampler engine types on startup
355 * general changes:
356 - support for muting sampler channels and solo mode of the same, two new
357 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
358 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
359 introduced for this, the behavior is the same like on a mixer console
360 (patch by Grigor Iliev, a bit adjusted). Also added configure option
361 --enable-process-muted-channels which can be used to enable the
362 processing of muted channels.
363 - support for sostenuto pedal
364 - support for monitoring the total number of active voices
367 - fixed some memory management errors
368 - fixed some concurrency problems that could lead to crashes when
369 LSCP commands were executed
370 - fixed crash when instrument loading failed previously on the same
371 sampler channel (fixes bug #36)
373 Version 0.3.3 (15 July 2005)
375 * packaging changes:
376 - fixed compilation with gcc 4.0
378 * Gigasampler format engine:
379 - LFO preprocessing was performed even though the respective LFO was
380 disabled by the instrument patch (minor efficiency fix)
381 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
382 for volume ramp downs in the same fragment (needed for current voice
383 stealing implementation) then simply inform the user with a warning
384 about possible click sounds and reduce the volume ramp down
385 appropriately instead of cancelling the audio device connection
387 Version 0.3.2 (24 June 2005)
389 * packaging changes:
390 - updated autotools build files to compile on OS X
391 (conditional compilation of CoreMIDI and MidiShare drivers)
392 - hand-crafted assembly optimization code can be disabled with
393 './configure --disable-asm' (definitely not recommended)
394 - fixed 'make dist' rule to include all necessary files
395 - require automake (>= 1.5) for 'make -f Makefile.cvs'
396 (due to 'dist-bzip2' automake option)
398 * Gigasampler format engine:
399 - support for the gig parameters for "release velocity response" curves
400 - fine tuning of the EGADSR envelope
401 - volume of release triggered samples now depends on note-on velocity,
402 note length and gig parameter "release trigger decay" instead of
403 note-off velocity.
404 - revised voice stealing
405 (fixes crash and endless loop caused by voice stealing)
406 - don't reset scale tuning on instrument or audio output device change
407 - handle key group conflicts right at the beginning of each fragment
408 instead of when the respective voice is actually launched
409 (fixes undefined behavior if stolen voices belonged to a key group -
410 this case was followed by a "killed voice survived" error message)
411 - fixed minor issue with null/silence samples
412 (those stole voices even though they don't need a voice at all which
413 resulted in "voice stealing didn't work out" messages)
414 - don't reset volume, pan, pitch and MIDI controller values on
415 instrument or audio output device change
417 * LSCP server:
418 - fixed some crashes (patch by Grigor Iliev, fixes #19)
419 - fixed LSCP event "CHANNEL_INFO" notification
420 (e.g. did not notify on volume changes or MIDI program change events)
422 * linuxsampler application:
423 - added command line parameters --lscp-addr and --lscp-port to override
424 default IP address and port of LSCP server
426 Version 0.3.1 (24 May 2005)
428 * initial release

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