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revision 686 by schoenebeck, Mon Jul 11 19:12:54 2005 UTC revision 2221 by iliev, Thu Jul 28 17:17:42 2011 UTC
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1  Version CVS HEAD (?)  Version CVS HEAD (?)
3      * plugin changes:
4        - LV2 Persist + Files support (patch by David Robillard)
6      * packaging changes:
7        - fixed building with newer MinGW-w64
8        - Mac OS X: support the new dir for Core Audio SDK
9        - Mac OS X: fixed building outside source directory
10        - made sure all source files for hostplugins are included when
11          doing "make dist"
12        - removed empty directories left from the cvs to svn migration
13        - fixed compilation with gcc 4.6.1
14        - another "make dist" fix, for the LV2 plugin
15        - made --enable-pthread-testcancel default on Mac OS X
16        - minor Makefile fix for building lscpparser when build and source
17          directories are separate
18        - Mac OS X: made it possible to specify plugin installation dir to
19          configure
20        - Mac OS X: Makefile fix for the install-strip target
22      * general changes:
23        - Refactoring: moved the independent code from
24          the Gigasampler format engine to base classes
25        - command line option '--profile' is currently disabled, since the
26          respective profiling code is currently broken
27        - Introduced support for optional environment variable
28          "LINUXSAMPLER_PLUGIN_DIR" which allows to override the directory
29          where the sampler shall look for instrument editor plugins
30          (patch by Luis Garrido, slightly modified).
31        - implemented Roland GS NRPN 1ArrH which allows to set volume per note
32        - implemented Roland GS NRPN 1CrrH which allows to set pan per note
33        - implemented Roland GS NRPN 1DrrH which allows to set reverb send per
34          note (in this implementation of the sampler its simply hard routed to
35          the 1st effect send of the sampler channel, no matter what the actual
36          effect type is)
37        - implemented Roland GS NRPN 1ErrH which allows to set chorus send per
38          note (in this implementation of the sampler its simply hard routed to
39          the 2nd effect send of the sampler channel, no matter what the actual
40          effect type is)
41        - implemented support for internal LADSPA effects
42        - raised limit of program change queue from 100 to 512
43          (as suggested by Alex Stone)
45      * Gigasampler format engine:
46        - implemented the "round robin keyboard" dimension
47        - fixed round robin and random dimensions for cases when number of
48          dimension zones is not a power of two
49        - made round robin use a counter for each region instead of each
50          key
52      * SFZ format engine:
53        - Initial implementation (not usable yet)
54        - added support for v2 multiple stage envelope generators
55        - added a fine-tuned v1 envelope generator instead of using the
56          one from the gig engine
57        - fixed memory leak and memory handling errors
58        - added support for trigger=first, trigger=legato and sw_previous
59        - allow non-numerical key values ("C#4" for example)
60        - "key" opcode now sets pitch_keycenter too
61        - fixed error when unloading instrument with same sample used by
62          multiple regions
63        - added some opcode aliases, like loopmode for loop_mode, to be
64          more compatible
65        - added support for trigger=release and rt_decay
66        - added support for off_mode=normal
67        - added support for random, seq_position, seq_length and volume
68        - added v1 LFO opcodes to parser (no support in engine yet)
69        - added support for amp_veltrack and amp_velcurve_N
70        - fine-tuned the default velocity curve
71        - added support for transpose
72        - fixed crash when using sw_down/up
73        - improved logic for sw_lokey/hikey/up/down/last
74        - added more v1 aliases to parser
75        - reduced memory usage for sfz data
76        - RT-safeness: avoid malloc in audio thread
77        - fixed a bug that could cause voice stealing to fail
78        - optimized sample lookup
79        - improved support for exclusive groups (group, off_by and
80          off_mode)
81        - added support for controller triggered regions (on_locc/on_hicc)
82        - added support for loop_mode=one_shot
83        - fixed playback of 16 bit wav files on big endian CPUs
84        - added support for Ogg Vorbis sample files
85        - use loop markers from sample file if loop_start and loop_end are
86          not set in sfz file
87        - implemeted filters. Filter types: lowpass, bandpass, bandreject
88          and highpass. 1, 2, 4 and 6 pole filters. Opcodes: fil_type,
89          cutoff, resonance, fil_veltrack, fil_keytrack, fil_keycenter,
90          cutoff_cc, cutoff_chanaft.
91        - bugfix: zero ampeg_sustain didn't work
92        - added support for velocity effect on amplifier envelope time
93          (ampeg_vel2attack, ampeg_vel2decay, ampeg_vel2sustain and
94          ampeg_vel2release)
95        - added support for EG hold (ampeg_hold)
96        - added support for sample offset (offset)
97        - use the newly introduced signal units model
98        - implemented opcodes lfoN_delay,
99          lfoN_freq, lfoN_pan, lfoN_cutoff, lfoN_resonance
100        - implemented opcodes ampeg_delay, ampeg_vel2delay
101          pitcheg_delay, pitcheg_start, pitcheg_attack, pitcheg_hold,
102          pitcheg_decay, pitcheg_sustain, pitcheg_release, pitcheg_vel2delay,
103          pitcheg_vel2attack, pitcheg_vel2hold, pitcheg_vel2decay,
104          pitcheg_vel2sustain, pitcheg_vel2release, pitcheg_depth
105        - implemented opcodes pitchlfo_delay, pitchlfo_freq,
106          pitchlfo_depth, fillfo_delay, fillfo_freq, fillfo_depth,
107          amplfo_delay, amplfo_freq, amplfo_depth
109      * SoundFont format engine:
110        - Initial implementation (not usable yet)
111        - RT-safeness: avoid malloc in audio thread
112        - fixed a bug that could cause voice stealing to fail
113        - fine-tuned amplitude EG (by switching from gig to sfz EG)
114        - initial implementation of Vibrato LFO and Modulation LFO
115        - initial implementation of cutoff filter
117      * Gigasampler format engine:
118        - bugfix: pitch LFO controller "internal+aftertouch" was broken
119        - bugfix: filter keyboard tracking was broken
120        - filter performance fix (an unnecessary copy was made of the
121          filter parameters in each sub fragment)
123      * Host plugins:
124        - AU bugfix: failed to destroy its audio/MIDI devices
125        - Listen to all interfaces on Mac OS X (INADDR_ANY)
126        - VST bugfix: If the host called resume() before and after
127          changing sample rate or block size, the number of channels was
128          incorrectly set to two. This caused silence in Cubase 5.
129        - save engine type (gig, sfz or sf2) in plugin state
130        - VST: when opening Fantasia, look for both 32 and 64 bit Java on
131          64 bit Windows
132        - AU: changed number of output channels from one stereo to 16
133          stereo
134        - VST: made it possible to build the VST plugin for Mac
135        - AU: link AU plugin dynamically if --disable-shared isn't
136          specified
138      * MIDI driver:
139        - ALSA MIDI driver supports now "NAME" device parameter, for overriding
140          the ALSA sequencer client name
141        - removed limit of maximum amount of MIDI ports per MIDI device, since
142          there is no reason for this limit
144      * audio driver:
145        - ASIO driver fixes for newer gcc versions (fix from PortAudio)
147      * LSCP server:
148        - added support for sending MIDI CC messages via LSCP command
149          "SEND CHANNEL MIDI_DATA CC <sampler-chan> <ctrl> <val>"
150        - added LSCP command "GET AVAILABLE_EFFECTS"
151        - added LSCP command "LIST AVAILABLE_EFFECTS"
152        - added LSCP command "GET EFFECT INFO <effect-index>"
153        - added LSCP command "CREATE EFFECT_INSTANCE <effect-index>"
154        - added LSCP command
155          "CREATE EFFECT_INSTANCE <effect-system> <module> <effect-name>"
156        - added LSCP command "DESTROY EFFECT_INSTANCE <effect-instance>"
157        - added LSCP command "GET EFFECT_INSTANCES"
158        - added LSCP command "LIST EFFECT_INSTANCES"
159        - added LSCP command "GET EFFECT_INSTANCE INFO <effect-instance>"
160        - added LSCP command
161          "GET EFFECT_INSTANCE_INPUT_CONTROL INFO <effect-instance> <input-control>"
163          <effect-instance> <input-control> <value>"
164        - added LSCP command "GET SEND_EFFECT_CHAINS <audio-device>"
165        - added LSCP command "LIST SEND_EFFECT_CHAINS <audio-device>"
166        - added LSCP command "ADD SEND_EFFECT_CHAIN <audio-device>"
167        - added LSCP command
168          "REMOVE SEND_EFFECT_CHAIN <audio-device> <effect-chain>"
169        - added LSCP command
170          "GET SEND_EFFECT_CHAIN INFO <audio-device> <effect-chain>"
171        - added LSCP command "APPEND SEND_EFFECT_CHAIN EFFECT <audio-device>
172          <effect-chain> <effect-instance>"
173        - added LSCP command "INSERT SEND_EFFECT_CHAIN EFFECT <audio-device>
174          <effect-chain> <effect-chain-pos> <effect-instance>"
175        - added LSCP command "REMOVE SEND_EFFECT_CHAIN EFFECT <audio-device>
176          <effect-chain> <chain-pos>"
177        - added LSCP command "SET FX_SEND EFFECT <sampler_channel>
178          <fx_send_id> <effect_chain> <chain_pos>"
179        - added LSCP command "REMOVE FX_SEND EFFECT <sampler_channel> <fx_send_id>"
180        - added LSCP commands "SUBSCRIBE EFFECT_INSTANCE_COUNT",
184      * Bug fixes:
185        - Fixed crash which may occur when MIDI key + transpose is out of range
186        - minor valgrind fixes
187        - fixed crash which occurred when changing an already deployed sampler
188          channel to a different engine type
189        - fixed crash when deleting a sampler channel or changing engine
190          type while an instrument load was in progress
191        - bugfix: playing a note while changing the instrument could cause
192          a crash, or give "Handing back unknown region" error messages
193        - bugfix: calling SET VOICES (which Fantasia does on start and
194          refresh) could cause instruments to be unloaded
195        - Mac OS X: fixed name collision of enum in EffectControl and
196          wrong name of destructor in AudioOutputDeviceCoreAudio.cpp
197        - Mac OS X: fixed hanging threads
198        - Windows: disabled the previous thread fix on non-Mac systems, as
199          it caused hanging threads on Windows
200        - Fixed possible crashes due to corrupted MIDI/audio device list
201          after MIDI/audio device creation failure
203    Version 1.0.0 (31 July 2009)
205      * packaging changes:
206        - autoconf bugfix: the PKG_CONFIG variable wasn't initialized properly,
207          causing e.g. the libgig test to fail when
208          "./configure --disable-jack-driver" was used
209          (patch by Alexis Ballier)
210        - fixed compilation with gcc 4.3
211        - fixes for building on OS X (thanks to Ebrahim Mayat for testing)
212        - fixed configure so it detects x86_64 (#107)
213        - fixes for building with newer MinGW versions
214        - fix for building with bison 2.4 (#111)
215        - fixed building with libgig installed in a non-standard directory
216        - minor fix in configure for mmsystem.h detection on MinGW
217        - Windows: look for editor plugins and Fantasia using base
218          directory of liblinuxsampler dll (look in the same directory and one
219          directory above)
220        - configure script fix: removed unconditional use of SSE
221        - fixed building with sqlite installed in a non-standard directory
222        - when cross-compiling, don't try to create instruments.db
223        - fix for new mingw-w64 version, which has usleep
225      * general changes:
226        - bugfix: on some POSIX systems instrument editor plugins refused to
227          load as we used a non-portable Linux specific struct field
228          (fixes bug #70, patch by Ronald Baljeu)
229        - fixed endless loop which occured when loading an instrument editor
230          plugin DLL on Windows systems failed
231        - fixed memory leaks that occurred when liblinuxsampler was unloaded
232        - optimized the SynchronizedConfig class so it doesn't wait
233          unnecessarily long after an update
234        - added support for notifying instrument editors on note-on / note-off
235          events (e.g. to highlight the pressed keys on the virtual keyboard
236          of gigedit)
237        - added support for triggering notes by instrument editors (see above)
238        - be verbose on DLL load errors (on Linux)
239        - fixed di-harmonic triangle LFO implementation (this LFO implementation
240          is only used by very few systems, most pick the int math
241          implementation, which is usually faster)
242        - fixes for audio drivers with varying buffer sizes
243        - experimental support for running LinuxSampler as a DSSI, LV2 and
244          VST plugin
245        - notification events for stream/voice count statistics are now sent
246          only when there are actual changes
247        - added memory ordering constraints to improve stability on
248          multi-core and multi-cpu systems
249        - maximum voices and disk streams can now be altered at runtime
250        - fixed CPU feature detection on x86_64 (maybe fixes #108)
251        - automatic stacktrace mechanism is now turned off by default and can
252          be switched on by command line option "--stacktrace" (the automatic
253          stacktrace mechanism seems to be broken on most systems at the moment)
254        - C++ API method InstrumentManager::LaunchInstrumentEditor() now returns
255          a pointer to the launched InstrumentEditor object
256        - added optional 3rd party user data parameter for following
257          liblinuxsampler C++ API methods: InstrumentEditor::Main(),
258          InstrumentEditor::Launch(),
259          InstrumentManager::LaunchInstrumentEditor()
260        - theoretical fix: made SynchronizedConfig follow C++0x memory
261          model more strictly
262        - fixes for using large audio device buffers
263        - Windows: add the installation directory to the DLL search path
264          when loading an editor plugin (solves problems with VST and
265          gigedit on systems with other GTK versions installed)
267      * audio driver:
268        - removed the nonsense audio channel constraint (which was hard coded to
269          max. 100 audio channels) for most audio drivers
270        - JACK audio driver did not offer a device parameter "SAMPLERATE" as
271          opposed to the LSCP specs
272        - bugfix: the SAMPLERATE parameter of some drivers (e.g. JACK)
273          reflected the wrong value
274        - fixed a memory management bug in ASIO driver
275        - Makefile fix: JACK_CFLAGS wasn't used
276        - JACK: use jack_client_open instead of the deprecated
277          jack_client_new
278        - added (experimental) CoreAudio driver
279        - applied old fixes to the ASIO driver that were included in the
280          previous binary release but accidentally never committed to CVS
281          (fixes #117)
282        - fixes for ASIO on mingw-w64 (iasio wrapper is not needed on
283          win64)
284        - VST: added support for sample rate and buffer size changes
285        - VST: close editor (Fantasia) when the VST is removed
286        - VST: avoid opening Fantasia more than once for each VST instance
287        - VST: export main function as "main" on Linux too (fix for
288          energyXT)
289        - VST: changed number of output channels from one stereo to 16
290          stereo
291        - added channel routing, fxsends and midi maps to the settings
292          stored in the plugin state
293        - performance optimization of AudioChannel::MixTo() and
294          AudioChannel::CopyTo() methods using GCC vector exensions
295          (if available)
296        - ASIO fixes: avoid initializing the device twice, avoid throwing
297          exception when getting parameters from a disconnected device
299      * MIDI driver:
300        - added JACK MIDI driver
301        - dispatch bank select as ordinary CC as well, the user might seriously
302          want to (mis)use it for some purpose ("fixed" in all current MIDI
303          input drivers: ALSA, CoreMIDI, JACK, MidiShare, MME)
304        - bugfix: pitch bend wasn't working with JackMidi, VST, LV2, MME,
305          CoreMidi or AU
306        - fixed mingw-w64 compilation error in MME driver
307        - made program change handling in MIDI thread real-time safe by
308          moving the logic to a non-RT thread
309        - fixed minor memory leak in ALSA driver
311      * instruments database:
312        - avoid time consuming samples scanning when adding instruments
313          to the instruments database
314        - added support for handling lost files in the instruments database
315        - Implemented option for adding instruments in separate directories
316          in the instruments database
317          (patch by Chris Cherrett & Andrew Williams, a bit adjusted)
318        - work-around for missing fnmatch function on Windows to make
319          instrument database compilable
320        - added instrument database support on Windows
321          works with both standalone mode and VST plugin.
322          the instruments DB file is located in
323          %USERPROFILE%\.linuxsampler\instruments.db which allows different
324          databases for each windows user
325          if no DB is present it automatically creates the .linuxsampler subdir
326          and then creates an empty DB
327        - fixed recursive import, which was broken on Windows
329      * Gigasampler format engine:
330        - fixed a memory leak that could happen when a channel was deleted
331          while notes were playing
332        - made it possible to load an instrument even if the audio thread
333          isn't running
334        - added partial support for the "Controller Triggered" MIDI rule,
335          enough for piano gigs with pedal noise samples
336        - minor fix: only mark FX sends as being modified if really the
337          respective FX send MIDI controller was used
338        - added support for GM global device volume SysEx message
339          (can be selected at compile time to either apply globally to the
340          whole sampler [default] or only to the sampler channels that are
341          connected to the respective MIDI input port the SysEx message arrived
342          on)
343        - bugfix: notes triggered at position 0 in the audio buffer were
344          sometimes wrongly killed in the same buffer, causing no sound to
345          be played
346        - added support for chromatic / drumkit mode Roland GS Sysex message
347          which is usally used to switch a part between chromatic sounds and
348          drumkit sounds (as opposed to their common default setting of MIDI
349          part 10 being a drumkit part and all other ones chromatic parts), in
350          LS however one can switch between the first 16 MIDI instrument maps
351          defined for the sampler
352        - made it possible to create multiple sample channels even if the
353          audio thread isn't running
354        - fixed crash when removing channel with active voices (#116)
355        - bugfix: on sample reference changes (instrument editor), only
356          un-cache the respective sample if it's really not used by any
357          sampler engine anymore
358        - re-cache samples in case they were changed by an instrument editor,
359          e.g. when a sample was added while playing (#82)
360        - fixed hanging notes which occured when note-off event had the exact
361          same time stamp as the voice's note-on event and occured both in the
362          same audio fragment cycle (fixes bug #112)
363        - added support for the "fine tune" and "pitch bend range"
364          instrument-level gig parameters
365        - fixed minor artifacts in pitch bend handling
366        - added support for GS Reset SysEx message
367        - allow gig files to use unlimited downward pitch shifting
368        - added a limit check for upward pitch shifting
369        - bugfix: sometimes, when playing a note twice fast, the second
370          note was silent
371        - fixed crash happening when a pitch bend event arrived at the
372          same time a new instrument was loading
374      * LSCP server:
375        - added new LSCP event "CHANNEL_MIDI" which can be used by frontends to
376          react on MIDI data arriving on certain sampler channels (so far only
377          Note-On and Note-Off events are sent via this LSCP event)
378        - added new LSCP event "DEVICE_MIDI" which can be used by frontends to
379          react on MIDI data arriving on certain MIDI input devices (so far only
380          Note-On and Note-Off events are sent via this LSCP event)
381        - added new LSCP commands: FIND LOST DB_INSTRUMENT_FILES and
383        - added new LSCP command: SEND CHANNEL MIDI_DATA which can be used by
384          frontends to send MIDI messages to specific sampler channel
385        - added two additional fields to GET FILE INSTRUMENT INFO command -
387        - bugfix: the bank number provided by MIDI_INSTRUMENT_INFO notifications
388          was incorrect
389        - Optimized the retrieval of the MIDI instrument mappings
390        - added new LSCP command "SET VOICES" to globally alter the maximum
391          amount of voices, added new LSCP event "GLOBAL_INFO:VOICES" which will
392          be triggered respectively
393        - added new LSCP command "SET STREAMS" to globally alter the maximum
394          amount of disk streams, added new LSCP event "GLOBAL_INFO:STREAMS"
395          which will be triggered respectively
396        - bugfix: retry if "select" returns EINTR (this fixes a crash when
397          a gigedit file dialog is opened)
398        - close all connections when LSCPServer is deleted
399        - hard close of all sockets on exit
400        - bugfix: SET CHANNEL MIDI_INPUT_TYPE didn't work with the MME
401          driver
403      * Bug fixes:
404        - fixed a crash which occurs when removing a sampler channel waiting
405          to start instrument loading after another channel
406        - fixed a crash which occurs when removing a sampler channel with
407          instrument loading in progress (bug #113)
408        - fixed termination caused by uncaught exception when adding MIDI
409          instrument with PERSISTENT load mode
410        - fixed possible iterator invalidations when resetting the sampler
411        - fixed memory leaks when issuing the following LSCP commands:
416        - fixed possible compilation error when sqlite is not present
417        - fixed orphaned pointers when setting maximum voices limit (bug #118)
418        - fixed crash when changing the audio output device of a sampler
419          channel with loaded instrument and start playing notes
420        - fixed endless loop in Engine::SuspendAll() (bug #120)
421        - fixed a low-level atomic load function that was broken on 64-bit
422          PowerPC, which probably could cause crashes on that platform
423        - fixed a memory management error which could cause a crash when a
424          plugin was unloaded
425        - bugfix: two private structs had the same name, which could cause
426          problems if the linker chose the wrong constructor
427        - fixed low-level ConditionServer usage bug that caused lockups on
428          Windows
431    Version 0.5.1 (6 December 2007)
433      * packaging changes:
434        - added autoconf checks for pthread library
435        - added autoconf check for pthread bug found on certain NPTL-enabled
436          glibc versions (see Gentoo bug report #194076)
437        - added autoconf checks for MS Windows
439      * general changes:
440        - bugfix: the thread used by an editor plugin didn't die when the
441          editor closed
442        - bugfix: Ringbuffer.h: fill_write_space_with_null() did not zero
443          out all the space. operator--() did not apply size_mask after
444          decrementing the read_ptr. DEFAULT_WRAP_ELEMENTS set to 0 in
445          order to avoid problems with the _NonVolatileReader functions.
446        - bugfix: Stream.h: added a missing divide by BytesPerSample in
447          GetWriteSpace(). Since this function is currently only used in
448          the stream's qsort() compare function, it didn't trigger any
449          bugs.
450        - Resampler.h, Synthesizer.h: cubic interpolation now works in
451          24bit mode too. Faster method to read 24bit words on little
452          endian machines (x86): replaced 3 byte reads + shifts with a 1
453          unaligned 32bit read and shift
454        - experimental support for MS Windows (MIDI input via MME, AUDIO
455          output via ASIO)
456        - made handling of SIGINT signal (Ctrl-C) a bit more robust
457        - support for monitoring the total number of active disk streams
458          (new LSCP commands: GET TOTAL_STREAM_COUNT,
461      * AUDIO driver:
462        - added Windows ASIO low latency audio driver
464      * MIDI driver:
465        - added MME Windows MIDI driver
467      * LSCP server:
468        - added support for Windows style path / filenames, however with
469          forward slash path separators instead of backslash
470          (i.e. "C:/foo/bar.gig")
471        - allow naughty liblscp to send non-string device parameters within
472          apostrophes as well
473        - added new LSCP commands: "GET FILE INSTRUMENTS <file>",
474          "LIST FILE INSTRUMENTS <file>" and
475          "GET FILE INSTRUMENT INFO <file> <index>" for retrieving informations
476          about an arbitrary instrument file on the system where the sampler is
477          running on
479    Version 0.5.0 (15 October 2007)
481      * packaging changes:
482        - config.h is not going to be installed along with liblinuxsampler's
483          API header files anymore
484        - only the API relevant header (and source) files will be exported to
485          the Doxygen API documentation (explicitly listed in Doxyfile.in)
486        - added completely new XCode project files for Mac OSX which is now
487          capable to execute our autoconf environment, thus no need anymore
488          to maintain the compile time configuration file (osx/version.h) for
489          OSX manually (patch by Toshi Nagata)
490        - fixed buggy boolean --enable-foo / --disable-foo configure script
491          parameters
492        - global.h now only covers global definitions that are needed for the
493          C++ API header files, all implementation internal global definitions
494          are now in global_private.h
495        - atomic.h is not exposed to the C++ API anymore
496        - no need to include config.h anymore for using LS's API header files
497        - fixed warnings in API doc generation
499      * general changes:
500        - replaced the old, confusing MIDI program change mechanism by a
501          flexible MIDI instrument mapper which allows to map arbitrary
502          (MIDI bank, MIDI program) pairs with arbitrary
503          (engine type, instrument file, file index) triplets which will be
504          loaded on the respective channel when such MIDI program change
505          messages arrive, beside that, each entry allows to define a life-time
506          strategy for the instrument, so the user can define whether the
507          instrument should i.e. be permanently loaded (to be able to switch
508          quickly among sounds) or i.e. loaded just on demand when the
509          respective program change arrives (to safe RAM space), as well as a
510          global volume factor for each entry, so the user can adjust the volume
511          dynamic of his mapped instrument collection without having to modify
512          the instrument files, also one can manage arbitrary amount of such
513          MIDI instrument maps and assign each sampler channel individually
514          a certain map, so that i.e. separation of normal instruments and
515          drumkits is possible
516        - new notification events for tracking changes to audio/MIDI devices,
517          MIDI instrument maps, MIDI instruments, FX sends, global volume.
518        - sampler was limited to load max. 200 instruments in the background
519          due to a constant size RingBuffer FIFO which is now replaced by a
520          dynamic (unlimited) size std::list FIFO
521        - added FX sends, these allow to route audio signals to arbitrary audio
522          output channels for being processed by external effect processors
523          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
524          controllers
525        - global (sampler wide) volume can now be controlled at runtime
526        - Implemented new, improved notification system
527        - fixed compilation errors regarding OSX
528          (patch by Toshi Nagata)
529        - implemented instruments database
530        - added support for escape sequences to the instruments database
531        - added highly experimental support for on-the-fly instrument editing
532          within the sampler's process (by using instrument editor plugins),
533          you'll notice the new "Registered instrument editors:" message on
534          startup, added a new LSCP command:
535          "EDIT CHANNEL INSTRUMENT <sampler-channel>"
536          to spawn a matching instrument editor for the instrument on the
537          given sampler channel, the plugin path can be overridden at compile
538          time with ./configure --enable-plugin-dir=/some/dir
539        - added experimental code for synchronizing instrument editors hosted
540          in the sampler's process to safely edit instruments while playing
541          without a crash (hopefully) by either suspending single regions
542          wherever possible or if unavoidable whole engine(s)
543        - fixed several issues in fundamental "Thread" class: set scheduling
544          policy and priority on thread level, set a minimum stack size for
545          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
546          threads simply inherited properties of starting thread instead of
547          setting their own policy and priority
548        - minor fix in our automatic stack trace mechanism on crashes, the
549          main process did not wait for the stack trace process to finish
550          its output
551        - fixed some minor memory leaks
552        - reenabled assembly features support, at the moment only for
553          enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
554        - minor assembly fix in x86 features detection (don't use the PIC
555          register, to avoid relocations in the text segment at runtime)
556        - POSIX callback functions of Thread.h are hidden
558      * MIDI driver:
559        - dispatch bank select (MSB and LSB) messages
561      * audio driver:
562        - the ALSA audio output driver parameters now reflect the correct
563          parameter value ranges for the respective selected sound card
564          (patch by Till Wimmer, a bit fixed and extended)
566      * Gigasampler format engine:
567        - if a filter is used and EG2 finishes before EG1, let the voice
568          die when EG2 has finished (this fixes a problem with clicks and
569          voice starvation for some gigs)
570        - playback is no longer disabled during instrument loading
571        - all notes playing on a channel that changes its instrument keep
572          playing with the old instrument until they get a note off
573          command
574        - EG fix: a release value of zero could cause noises or crash
575        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
576        - EG fine tuning: when attack is zero the EG starts at a level
577          above max sustain level, which means that there is a decay phase
578          even if sustain is 100%
579        - more EG fixes: the level could sometimes go below zero and cause
580          noises or crashes
581        - minor fix of EGDecay (patch by Toshi Nagata)
582        - fixed compiler error when --enable-override-filter-type was
583          supplied to the configure script (fixes #46)
584        - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
585          instead of a fix value
586        - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
587          127 (solo mode) only kill voices if the respective mode really
588          changed
590      * LSCP server:
591        - fixed compile time error for old Bison versions
592          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
593        - parser now supports extended ASCII character set
594          (up to ASCII code 255, i.e. includes now umlauts and accents)
595        - filename arguments in LSCP commands now allow to use escape
596          sequences, that is directly literal as one of: \', \", \\, \n, \r,
597          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
598          code value like \xf2) (fixes bug #24)
599        - the following LSCP commands now also support escape sequences for at
600          least one of their text-based parameters (i.e. name, description):
607        - returns verbose syntax errors (line and column where syntax error
608          occured, the unexpected character and the actually expected, possible
609          character(s), the latter only if less than 5 possibilities)
610        - made sure that LSCP syntax is not affected by gigedit locale
611          settings
612        - bugfix regarding strings parameter lists: all comma separated lists
613          of strings were treated as being one string containing commas
614          (fixes #57)
616      * Bug fixes:
617        - fixed crash occurring on certain LSCP scripts (Bug 39)
618        - another thread safety fix for lscp "load engine" and "set
619          channel audio output device"
620        - fixed a crash which occurs when reassigning the same engine
621          on a sampler channel with connected MIDI device
622        - fixed a crash which occurs when changing the number of ports of a MIDI
623          device connected to a sampler channel to number less then or equal
624          to the index of the port to which the sampler channel is connected.
625        - The previous bindings were not been disconnected when altering
626          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
627          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
628        - The active stream/voice count statistic was incorrect.
629        - notification events were not been sent for some sampler
630          channel changes
631        - added default min and max values to restrict the number of allowed
632          audio output channels and MIDI input ports
633        - the connection to the PCM interface is now closed when destroying
634          an audio output device
635        - files with slash in their path or filename could not be loaded
637      * test cases:
638        - updated and fixed (haven't been touched in a while)
640    Version 0.4.0 (24 November 2006)
642      * packaging changes:
643        - changed deprecated copyright attribute to license; added ldconfig
644          to post-(un)install steps; added devel package for liblinuxsampler;
645          to linuxsampler.spec (RPM)
646        - install necessary development header files for allowing 3rd party
647          applications to link against liblinuxsampler
648        - liblinuxsampler's API documentation can be generated with 'make docs'
649          (Doxygen required)
650        - added benchmark to automatically detect the best triangle LFO
651          implementation (currently either an integer math solution or a
652          di-harmonic approximation), automatic detection can be overriden
653          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
654          configure script argument though (mandatory for cross-compilation)
655        - do not automatically pick optimized gcc flags if the user already
656          provided some on his own (as CXXFLAGS)
657        - added compile time option to disable processing of All-Notes-Off MIDI
658          messages
659        - added compile time options to allow disabling the various audio and
660          MIDI drivers
661        - fixed automatic GCC CPU switch detection on PPC
662          (patch by Ebrahim Mayat)
664      * Gigasampler format engine:
665        - extensive synthesis optimization
666          (reimplementation of EGs and LFO(s), removed synthesis parameter
667          prerendering and the synthesis parameter matrix in general, splitting
668          each audio fragment into subfragments now where each subfragment uses
669          constant pitch and filter coefficients. The volume coefficient is
670          linearly interpolated inside a subfragment, unless
671          --disable-interpolate-volume is set.)
672        - fine tuning of the EG modulation parameters
673        - improved filter cutoff calculation by adding support for the
674          following gig parameters: Cutoff freq (used when no cutoff
675          controller is defined), Control invert, Minimum cutoff, Velocity
676          curve and Velocity range. The keyboard tracking now scales
677          cutoff frequency instead of resonance.
678        - added support for gig parameter Resonance.
679        - fixed bug in sysex handling (patch by Juan Linietsky)
680        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
681          which can be overridden with --enable-global-attenuation
682        - EG fixes: made the length of "attack hold" stage more
683          accurate. Release stage can now start before attack stage
684          ends. Cancel release didn't work when sustain was zero. Attack
685          time now has a minimal value to prevent clicks.
686        - fixed pitch changes larger than one octave
687        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
688        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
689          all modes can be altered via standard GM messages, that is CC5 for
690          altering portamento time, CC65 for enabling / disabling portamento
691          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
692        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
693          parameter) and crossfade
694        - added support for the "attenuation controller threshold" gig
695          parameter
696        - added smoothing of volume changes caused by control change
697          messages
698        - sample loop parameters are now taken from the DimensionRegion
699          instead of the wave chunk
700        - fixed keyswitching for v3 gigs with a number of keyswitch splits
701          not equal to a power of two
702        - reimplementation of the filter algorithm. The new filter is more
703          accurate and supports all gig filter types, including bandreject
704          and lowpass turbo.
705        - real support for 24 bit samples - samples are not truncated to
706          16 bits anymore
707        - support for aftertouch (channel pressure, not polyphonic
708          aftertouch)
709        - LFO1 behaviour fixed (dampening from max volume instead of
710          amplifying from 0)
712      * LSCP server:
713        - fixed application exit on broken pipe error (fixes bug #20)
714        - fixed the notification messages delay due to lack of
715          network activity (fixes bug #26)
716        - fixed parser bug which occured on space(s) within device parameters
717          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
719      * audio driver:
720        - added aRts audio output driver (by no means RT safe)
722      * MIDI driver:
723        - fixed legacy sysex code which caused dispatching of MIDI SysEx
724          messages several times instead of once
725        - API extension for MIDI drivers which already supply exact time stamps
726          for events (i.e. for offline rendering based MIDI drivers)
727        - added checks for bad MIDI data
729      * linuxsampler application:
730        - show available sampler engine types on startup
732      * general changes:
733        - support for muting sampler channels and solo mode of the same, two new
734          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
735          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
736          introduced for this, the behavior is the same like on a mixer console
737          (patch by Grigor Iliev, a bit adjusted). Also added configure option
738          --enable-process-muted-channels which can be used to enable the
739          processing of muted channels.
740        - support for sostenuto pedal
741        - support for monitoring the total number of active voices
744        - fixed some memory management errors
745        - fixed some concurrency problems that could lead to crashes when
746          LSCP commands were executed
747        - fixed crash when instrument loading failed previously on the same
748          sampler channel (fixes bug #36)
750    Version 0.3.3 (15 July 2005)
752    * packaging changes:    * packaging changes:
753      - fixed compilation with gcc 4.0      - fixed compilation with gcc 4.0
755      * Gigasampler format engine:
756        - LFO preprocessing was performed even though the respective LFO was
757          disabled by the instrument patch (minor efficiency fix)
758        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
759          for volume ramp downs in the same fragment (needed for current voice
760          stealing implementation) then simply inform the user with a warning
761          about possible click sounds and reduce the volume ramp down
762          appropriately instead of cancelling the audio device connection
764  Version 0.3.2 (24 June 2005)  Version 0.3.2 (24 June 2005)
766    * packaging changes:    * packaging changes:

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