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Contents of /linuxsampler/trunk/ChangeLog

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Revision 1646 - (show annotations) (download)
Sun Jan 20 15:04:51 2008 UTC (12 years, 8 months ago) by persson
File size: 20716 byte(s)
* made it possible to load an instrument even if the audio thread
  isn't running

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

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