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Revision 1790 - (show annotations) (download)
Sun Nov 2 12:05:00 2008 UTC (11 years, 9 months ago) by persson
File size: 24507 byte(s)
* added memory ordering constraints to improve stability on multi-core
  and multi-cpu systems

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)
8 - fixed compilation with gcc 4.3
10 * general changes:
11 - bugfix: on some POSIX systems instrument editor plugins refused to
12 load as we used a non-portable Linux specific struct field
13 (fixes bug #70, patch by Ronald Baljeu)
14 - fixed endless loop which occured when loading an instrument editor
15 plugin DLL on Windows systems failed
16 - fixed memory leaks that occurred when liblinuxsampler was unloaded
17 - optimized the SynchronizedConfig class so it doesn't wait
18 unnecessarily long after an update
19 - added support for notifying instrument editors on note-on / note-off
20 events (e.g. to highlight the pressed keys on the virtual keyboard
21 of gigedit)
22 - added support for triggering notes by instrument editors (see above)
23 - be verbose on DLL load errors (on Linux)
24 - fixed di-harmonic triangle LFO implementation (this LFO implementation
25 is only used by very few systems, most pick the int math
26 implementation, which is usually faster)
27 - fixes for audio drivers with varying buffer sizes
28 - experimental support for running LinuxSampler as a DSSI, LV2 and
29 VST plugin
30 - notification events for stream/voice count statistics are now sent
31 only when there are actual changes
32 - added memory ordering constraints to improve stability on
33 multi-core and multi-cpu systems
35 * audio driver:
36 - removed the nonsense audio channel constraint (which was hard coded to
37 max. 100 audio channels) for most audio drivers
38 - JACK audio driver did not offer a device parameter "SAMPLERATE" as
39 opposed to the LSCP specs
40 - bugfix: the SAMPLERATE parameter of some drivers (e.g. JACK)
41 reflected the wrong value
42 - fixed a memory management bug in ASIO driver
43 - Makefile fix: JACK_CFLAGS wasn't used
44 - JACK: use jack_client_open instead of the deprecated
45 jack_client_new
47 * MIDI driver:
48 - added JACK MIDI driver
49 - dispatch bank select as ordinary CC as well, the user might seriously
50 want to (mis)use it for some purpose ("fixed" in all current MIDI
51 input drivers: ALSA, CoreMIDI, JACK, MidiShare, MME)
53 * instruments database:
54 - avoid time consuming samples scanning when adding instruments
55 to the instruments database
56 - added support for handling lost files in the instruments database
57 - Implemented option for adding instruments in separate directories
58 in the instruments database
59 (patch by Chris Cherrett & Andrew Williams, a bit adjusted)
61 * Gigasampler format engine:
62 - fixed a memory leak that could happen when a channel was deleted
63 while notes were playing
64 - made it possible to load an instrument even if the audio thread
65 isn't running
66 - added partial support for the "Controller Triggered" MIDI rule,
67 enough for piano gigs with pedal noise samples
68 - minor fix: only mark FX sends as being modified if really the
69 respective FX send MIDI controller was used
70 - added support for GM global device volume SysEx message
71 (can be selected at compile time to either apply globally to the
72 whole sampler [default] or only to the sampler channels that are
73 connected to the respective MIDI input port the SysEx message arrived
74 on)
75 - bugfix: notes triggered at position 0 in the audio buffer were
76 sometimes wrongly killed in the same buffer, causing no sound to
77 be played
78 - added support for chromatic / drumkit mode Roland GS Sysex message
79 which is usally used to switch a part between chromatic sounds and
80 drumkit sounds (as opposed to their common default setting of MIDI
81 part 10 being a drumkit part and all other ones chromatic parts), in
82 LS however one can switch between the first 16 MIDI instrument maps
83 defined for the sampler
84 - made it possible to create multiple sample channels even if the
85 audio thread isn't running
87 * LSCP server:
88 - added new LSCP event "CHANNEL_MIDI" which can be used by frontends to
89 react on MIDI data arriving on certain sampler channels (so far only
90 Note-On and Note-Off events are sent via this LSCP event)
91 - added new LSCP event "DEVICE_MIDI" which can be used by frontends to
92 react on MIDI data arriving on certain MIDI input devices (so far only
93 Note-On and Note-Off events are sent via this LSCP event)
94 - added new LSCP commands: FIND LOST DB_INSTRUMENT_FILES and
96 - added new LSCP command: SEND CHANNEL MIDI_DATA which can be used by
97 frontends to send MIDI messages to specific sampler channel
98 - added two additional fields to GET FILE INSTRUMENT INFO command -
100 - bugfix: the bank number provided by MIDI_INSTRUMENT_INFO notifications
101 was incorrect
102 - Optimized the retrieval of the MIDI instrument mappings
104 * Bug fixes:
105 - fixed a crash which occurs when removing a sampler channel waiting
106 to start instrument loading after another channel
109 Version 0.5.1 (6 December 2007)
111 * packaging changes:
112 - added autoconf checks for pthread library
113 - added autoconf check for pthread bug found on certain NPTL-enabled
114 glibc versions (see Gentoo bug report #194076)
115 - added autoconf checks for MS Windows
117 * general changes:
118 - bugfix: the thread used by an editor plugin didn't die when the
119 editor closed
120 - bugfix: Ringbuffer.h: fill_write_space_with_null() did not zero
121 out all the space. operator--() did not apply size_mask after
122 decrementing the read_ptr. DEFAULT_WRAP_ELEMENTS set to 0 in
123 order to avoid problems with the _NonVolatileReader functions.
124 - bugfix: Stream.h: added a missing divide by BytesPerSample in
125 GetWriteSpace(). Since this function is currently only used in
126 the stream's qsort() compare function, it didn't trigger any
127 bugs.
128 - Resampler.h, Synthesizer.h: cubic interpolation now works in
129 24bit mode too. Faster method to read 24bit words on little
130 endian machines (x86): replaced 3 byte reads + shifts with a 1
131 unaligned 32bit read and shift
132 - experimental support for MS Windows (MIDI input via MME, AUDIO
133 output via ASIO)
134 - made handling of SIGINT signal (Ctrl-C) a bit more robust
135 - support for monitoring the total number of active disk streams
136 (new LSCP commands: GET TOTAL_STREAM_COUNT,
139 * AUDIO driver:
140 - added Windows ASIO low latency audio driver
142 * MIDI driver:
143 - added MME Windows MIDI driver
145 * LSCP server:
146 - added support for Windows style path / filenames, however with
147 forward slash path separators instead of backslash
148 (i.e. "C:/foo/bar.gig")
149 - allow naughty liblscp to send non-string device parameters within
150 apostrophes as well
151 - added new LSCP commands: "GET FILE INSTRUMENTS <file>",
152 "LIST FILE INSTRUMENTS <file>" and
153 "GET FILE INSTRUMENT INFO <file> <index>" for retrieving informations
154 about an arbitrary instrument file on the system where the sampler is
155 running on
157 Version 0.5.0 (15 October 2007)
159 * packaging changes:
160 - config.h is not going to be installed along with liblinuxsampler's
161 API header files anymore
162 - only the API relevant header (and source) files will be exported to
163 the Doxygen API documentation (explicitly listed in Doxyfile.in)
164 - added completely new XCode project files for Mac OSX which is now
165 capable to execute our autoconf environment, thus no need anymore
166 to maintain the compile time configuration file (osx/version.h) for
167 OSX manually (patch by Toshi Nagata)
168 - fixed buggy boolean --enable-foo / --disable-foo configure script
169 parameters
170 - global.h now only covers global definitions that are needed for the
171 C++ API header files, all implementation internal global definitions
172 are now in global_private.h
173 - atomic.h is not exposed to the C++ API anymore
174 - no need to include config.h anymore for using LS's API header files
175 - fixed warnings in API doc generation
177 * general changes:
178 - replaced the old, confusing MIDI program change mechanism by a
179 flexible MIDI instrument mapper which allows to map arbitrary
180 (MIDI bank, MIDI program) pairs with arbitrary
181 (engine type, instrument file, file index) triplets which will be
182 loaded on the respective channel when such MIDI program change
183 messages arrive, beside that, each entry allows to define a life-time
184 strategy for the instrument, so the user can define whether the
185 instrument should i.e. be permanently loaded (to be able to switch
186 quickly among sounds) or i.e. loaded just on demand when the
187 respective program change arrives (to safe RAM space), as well as a
188 global volume factor for each entry, so the user can adjust the volume
189 dynamic of his mapped instrument collection without having to modify
190 the instrument files, also one can manage arbitrary amount of such
191 MIDI instrument maps and assign each sampler channel individually
192 a certain map, so that i.e. separation of normal instruments and
193 drumkits is possible
194 - new notification events for tracking changes to audio/MIDI devices,
195 MIDI instrument maps, MIDI instruments, FX sends, global volume.
196 - sampler was limited to load max. 200 instruments in the background
197 due to a constant size RingBuffer FIFO which is now replaced by a
198 dynamic (unlimited) size std::list FIFO
199 - added FX sends, these allow to route audio signals to arbitrary audio
200 output channels for being processed by external effect processors
201 (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
202 controllers
203 - global (sampler wide) volume can now be controlled at runtime
204 - Implemented new, improved notification system
205 - fixed compilation errors regarding OSX
206 (patch by Toshi Nagata)
207 - implemented instruments database
208 - added support for escape sequences to the instruments database
209 - added highly experimental support for on-the-fly instrument editing
210 within the sampler's process (by using instrument editor plugins),
211 you'll notice the new "Registered instrument editors:" message on
212 startup, added a new LSCP command:
213 "EDIT CHANNEL INSTRUMENT <sampler-channel>"
214 to spawn a matching instrument editor for the instrument on the
215 given sampler channel, the plugin path can be overridden at compile
216 time with ./configure --enable-plugin-dir=/some/dir
217 - added experimental code for synchronizing instrument editors hosted
218 in the sampler's process to safely edit instruments while playing
219 without a crash (hopefully) by either suspending single regions
220 wherever possible or if unavoidable whole engine(s)
221 - fixed several issues in fundamental "Thread" class: set scheduling
222 policy and priority on thread level, set a minimum stack size for
223 thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
224 threads simply inherited properties of starting thread instead of
225 setting their own policy and priority
226 - minor fix in our automatic stack trace mechanism on crashes, the
227 main process did not wait for the stack trace process to finish
228 its output
229 - fixed some minor memory leaks
230 - reenabled assembly features support, at the moment only for
231 enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
232 - minor assembly fix in x86 features detection (don't use the PIC
233 register, to avoid relocations in the text segment at runtime)
234 - POSIX callback functions of Thread.h are hidden
236 * MIDI driver:
237 - dispatch bank select (MSB and LSB) messages
239 * audio driver:
240 - the ALSA audio output driver parameters now reflect the correct
241 parameter value ranges for the respective selected sound card
242 (patch by Till Wimmer, a bit fixed and extended)
244 * Gigasampler format engine:
245 - if a filter is used and EG2 finishes before EG1, let the voice
246 die when EG2 has finished (this fixes a problem with clicks and
247 voice starvation for some gigs)
248 - playback is no longer disabled during instrument loading
249 - all notes playing on a channel that changes its instrument keep
250 playing with the old instrument until they get a note off
251 command
252 - EG fix: a release value of zero could cause noises or crash
253 - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
254 - EG fine tuning: when attack is zero the EG starts at a level
255 above max sustain level, which means that there is a decay phase
256 even if sustain is 100%
257 - more EG fixes: the level could sometimes go below zero and cause
258 noises or crashes
259 - minor fix of EGDecay (patch by Toshi Nagata)
260 - fixed compiler error when --enable-override-filter-type was
261 supplied to the configure script (fixes #46)
262 - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
263 instead of a fix value
264 - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
265 127 (solo mode) only kill voices if the respective mode really
266 changed
268 * LSCP server:
269 - fixed compile time error for old Bison versions
270 (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
271 - parser now supports extended ASCII character set
272 (up to ASCII code 255, i.e. includes now umlauts and accents)
273 - filename arguments in LSCP commands now allow to use escape
274 sequences, that is directly literal as one of: \', \", \\, \n, \r,
275 \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
276 code value like \xf2) (fixes bug #24)
277 - the following LSCP commands now also support escape sequences for at
278 least one of their text-based parameters (i.e. name, description):
285 - returns verbose syntax errors (line and column where syntax error
286 occured, the unexpected character and the actually expected, possible
287 character(s), the latter only if less than 5 possibilities)
288 - made sure that LSCP syntax is not affected by gigedit locale
289 settings
290 - bugfix regarding strings parameter lists: all comma separated lists
291 of strings were treated as being one string containing commas
292 (fixes #57)
294 * Bug fixes:
295 - fixed crash occurring on certain LSCP scripts (Bug 39)
296 - another thread safety fix for lscp "load engine" and "set
297 channel audio output device"
298 - fixed a crash which occurs when reassigning the same engine
299 on a sampler channel with connected MIDI device
300 - fixed a crash which occurs when changing the number of ports of a MIDI
301 device connected to a sampler channel to number less then or equal
302 to the index of the port to which the sampler channel is connected.
303 - The previous bindings were not been disconnected when altering
304 the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
305 unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
306 - The active stream/voice count statistic was incorrect.
307 - notification events were not been sent for some sampler
308 channel changes
309 - added default min and max values to restrict the number of allowed
310 audio output channels and MIDI input ports
311 - the connection to the PCM interface is now closed when destroying
312 an audio output device
313 - files with slash in their path or filename could not be loaded
315 * test cases:
316 - updated and fixed (haven't been touched in a while)
318 Version 0.4.0 (24 November 2006)
320 * packaging changes:
321 - changed deprecated copyright attribute to license; added ldconfig
322 to post-(un)install steps; added devel package for liblinuxsampler;
323 to linuxsampler.spec (RPM)
324 - install necessary development header files for allowing 3rd party
325 applications to link against liblinuxsampler
326 - liblinuxsampler's API documentation can be generated with 'make docs'
327 (Doxygen required)
328 - added benchmark to automatically detect the best triangle LFO
329 implementation (currently either an integer math solution or a
330 di-harmonic approximation), automatic detection can be overriden
331 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
332 configure script argument though (mandatory for cross-compilation)
333 - do not automatically pick optimized gcc flags if the user already
334 provided some on his own (as CXXFLAGS)
335 - added compile time option to disable processing of All-Notes-Off MIDI
336 messages
337 - added compile time options to allow disabling the various audio and
338 MIDI drivers
339 - fixed automatic GCC CPU switch detection on PPC
340 (patch by Ebrahim Mayat)
342 * Gigasampler format engine:
343 - extensive synthesis optimization
344 (reimplementation of EGs and LFO(s), removed synthesis parameter
345 prerendering and the synthesis parameter matrix in general, splitting
346 each audio fragment into subfragments now where each subfragment uses
347 constant pitch and filter coefficients. The volume coefficient is
348 linearly interpolated inside a subfragment, unless
349 --disable-interpolate-volume is set.)
350 - fine tuning of the EG modulation parameters
351 - improved filter cutoff calculation by adding support for the
352 following gig parameters: Cutoff freq (used when no cutoff
353 controller is defined), Control invert, Minimum cutoff, Velocity
354 curve and Velocity range. The keyboard tracking now scales
355 cutoff frequency instead of resonance.
356 - added support for gig parameter Resonance.
357 - fixed bug in sysex handling (patch by Juan Linietsky)
358 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
359 which can be overridden with --enable-global-attenuation
360 - EG fixes: made the length of "attack hold" stage more
361 accurate. Release stage can now start before attack stage
362 ends. Cancel release didn't work when sustain was zero. Attack
363 time now has a minimal value to prevent clicks.
364 - fixed pitch changes larger than one octave
365 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
366 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
367 all modes can be altered via standard GM messages, that is CC5 for
368 altering portamento time, CC65 for enabling / disabling portamento
369 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
370 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
371 parameter) and crossfade
372 - added support for the "attenuation controller threshold" gig
373 parameter
374 - added smoothing of volume changes caused by control change
375 messages
376 - sample loop parameters are now taken from the DimensionRegion
377 instead of the wave chunk
378 - fixed keyswitching for v3 gigs with a number of keyswitch splits
379 not equal to a power of two
380 - reimplementation of the filter algorithm. The new filter is more
381 accurate and supports all gig filter types, including bandreject
382 and lowpass turbo.
383 - real support for 24 bit samples - samples are not truncated to
384 16 bits anymore
385 - support for aftertouch (channel pressure, not polyphonic
386 aftertouch)
387 - LFO1 behaviour fixed (dampening from max volume instead of
388 amplifying from 0)
390 * LSCP server:
391 - fixed application exit on broken pipe error (fixes bug #20)
392 - fixed the notification messages delay due to lack of
393 network activity (fixes bug #26)
394 - fixed parser bug which occured on space(s) within device parameters
397 * audio driver:
398 - added aRts audio output driver (by no means RT safe)
400 * MIDI driver:
401 - fixed legacy sysex code which caused dispatching of MIDI SysEx
402 messages several times instead of once
403 - API extension for MIDI drivers which already supply exact time stamps
404 for events (i.e. for offline rendering based MIDI drivers)
405 - added checks for bad MIDI data
407 * linuxsampler application:
408 - show available sampler engine types on startup
410 * general changes:
411 - support for muting sampler channels and solo mode of the same, two new
412 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
413 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
414 introduced for this, the behavior is the same like on a mixer console
415 (patch by Grigor Iliev, a bit adjusted). Also added configure option
416 --enable-process-muted-channels which can be used to enable the
417 processing of muted channels.
418 - support for sostenuto pedal
419 - support for monitoring the total number of active voices
422 - fixed some memory management errors
423 - fixed some concurrency problems that could lead to crashes when
424 LSCP commands were executed
425 - fixed crash when instrument loading failed previously on the same
426 sampler channel (fixes bug #36)
428 Version 0.3.3 (15 July 2005)
430 * packaging changes:
431 - fixed compilation with gcc 4.0
433 * Gigasampler format engine:
434 - LFO preprocessing was performed even though the respective LFO was
435 disabled by the instrument patch (minor efficiency fix)
436 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
437 for volume ramp downs in the same fragment (needed for current voice
438 stealing implementation) then simply inform the user with a warning
439 about possible click sounds and reduce the volume ramp down
440 appropriately instead of cancelling the audio device connection
442 Version 0.3.2 (24 June 2005)
444 * packaging changes:
445 - updated autotools build files to compile on OS X
446 (conditional compilation of CoreMIDI and MidiShare drivers)
447 - hand-crafted assembly optimization code can be disabled with
448 './configure --disable-asm' (definitely not recommended)
449 - fixed 'make dist' rule to include all necessary files
450 - require automake (>= 1.5) for 'make -f Makefile.cvs'
451 (due to 'dist-bzip2' automake option)
453 * Gigasampler format engine:
454 - support for the gig parameters for "release velocity response" curves
455 - fine tuning of the EGADSR envelope
456 - volume of release triggered samples now depends on note-on velocity,
457 note length and gig parameter "release trigger decay" instead of
458 note-off velocity.
459 - revised voice stealing
460 (fixes crash and endless loop caused by voice stealing)
461 - don't reset scale tuning on instrument or audio output device change
462 - handle key group conflicts right at the beginning of each fragment
463 instead of when the respective voice is actually launched
464 (fixes undefined behavior if stolen voices belonged to a key group -
465 this case was followed by a "killed voice survived" error message)
466 - fixed minor issue with null/silence samples
467 (those stole voices even though they don't need a voice at all which
468 resulted in "voice stealing didn't work out" messages)
469 - don't reset volume, pan, pitch and MIDI controller values on
470 instrument or audio output device change
472 * LSCP server:
473 - fixed some crashes (patch by Grigor Iliev, fixes #19)
474 - fixed LSCP event "CHANNEL_INFO" notification
475 (e.g. did not notify on volume changes or MIDI program change events)
477 * linuxsampler application:
478 - added command line parameters --lscp-addr and --lscp-port to override
479 default IP address and port of LSCP server
481 Version 0.3.1 (24 May 2005)
483 * initial release

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