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revision 692 by schoenebeck, Fri Jul 15 16:59:35 2005 UTC revision 1862 by persson, Wed Mar 11 19:03:37 2009 UTC
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1    Version CVS HEAD (?)
2    
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
9        - fixes for building on OS X (thanks to Ebrahim Mayat for testing)
10        - fixed configure so it detects x86_64 (#107)
11        - fixes for building with newer MinGW versions
12        - fix for building with bison 2.4 (#111)
13        - fixed building with libgig installed in a non-standard directory
14    
15      * general changes:
16        - bugfix: on some POSIX systems instrument editor plugins refused to
17          load as we used a non-portable Linux specific struct field
18          (fixes bug #70, patch by Ronald Baljeu)
19        - fixed endless loop which occured when loading an instrument editor
20          plugin DLL on Windows systems failed
21        - fixed memory leaks that occurred when liblinuxsampler was unloaded
22        - optimized the SynchronizedConfig class so it doesn't wait
23          unnecessarily long after an update
24        - added support for notifying instrument editors on note-on / note-off
25          events (e.g. to highlight the pressed keys on the virtual keyboard
26          of gigedit)
27        - added support for triggering notes by instrument editors (see above)
28        - be verbose on DLL load errors (on Linux)
29        - fixed di-harmonic triangle LFO implementation (this LFO implementation
30          is only used by very few systems, most pick the int math
31          implementation, which is usually faster)
32        - fixes for audio drivers with varying buffer sizes
33        - experimental support for running LinuxSampler as a DSSI, LV2 and
34          VST plugin
35        - notification events for stream/voice count statistics are now sent
36          only when there are actual changes
37        - added memory ordering constraints to improve stability on
38          multi-core and multi-cpu systems
39        - maximum voices and disk streams can now be altered at runtime
40        - fixed CPU feature detection on x86_64 (maybe fixes #108)
41        - automatic stacktrace mechanism is now turned off by default and can
42          be switched on by command line option "--stacktrace" (the automatic
43          stacktrace mechanism seems to be broken on most systems at the moment)
44    
45      * audio driver:
46        - removed the nonsense audio channel constraint (which was hard coded to
47          max. 100 audio channels) for most audio drivers
48        - JACK audio driver did not offer a device parameter "SAMPLERATE" as
49          opposed to the LSCP specs
50        - bugfix: the SAMPLERATE parameter of some drivers (e.g. JACK)
51          reflected the wrong value
52        - fixed a memory management bug in ASIO driver
53        - Makefile fix: JACK_CFLAGS wasn't used
54        - JACK: use jack_client_open instead of the deprecated
55          jack_client_new
56        - added (experimental) CoreAudio driver
57    
58      * MIDI driver:
59        - added JACK MIDI driver
60        - dispatch bank select as ordinary CC as well, the user might seriously
61          want to (mis)use it for some purpose ("fixed" in all current MIDI
62          input drivers: ALSA, CoreMIDI, JACK, MidiShare, MME)
63    
64      * instruments database:
65        - avoid time consuming samples scanning when adding instruments
66          to the instruments database
67        - added support for handling lost files in the instruments database
68        - Implemented option for adding instruments in separate directories
69          in the instruments database
70          (patch by Chris Cherrett & Andrew Williams, a bit adjusted)
71    
72      * Gigasampler format engine:
73        - fixed a memory leak that could happen when a channel was deleted
74          while notes were playing
75        - made it possible to load an instrument even if the audio thread
76          isn't running
77        - added partial support for the "Controller Triggered" MIDI rule,
78          enough for piano gigs with pedal noise samples
79        - minor fix: only mark FX sends as being modified if really the
80          respective FX send MIDI controller was used
81        - added support for GM global device volume SysEx message
82          (can be selected at compile time to either apply globally to the
83          whole sampler [default] or only to the sampler channels that are
84          connected to the respective MIDI input port the SysEx message arrived
85          on)
86        - bugfix: notes triggered at position 0 in the audio buffer were
87          sometimes wrongly killed in the same buffer, causing no sound to
88          be played
89        - added support for chromatic / drumkit mode Roland GS Sysex message
90          which is usally used to switch a part between chromatic sounds and
91          drumkit sounds (as opposed to their common default setting of MIDI
92          part 10 being a drumkit part and all other ones chromatic parts), in
93          LS however one can switch between the first 16 MIDI instrument maps
94          defined for the sampler
95        - made it possible to create multiple sample channels even if the
96          audio thread isn't running
97        - fixed crash when removing channel with active voices (#116)
98        - bugfix: on sample reference changes (instrument editor), only
99          un-cache the respective sample if it's really not used by any
100          sampler engine anymore
101        - re-cache samples in case they were changed by an instrument editor,
102          e.g. when a sample was added while playing (#82)
103        - fixed hanging notes which occured when note-off event had the exact
104          same time stamp as the voice's note-on event and occured both in the
105          same audio fragment cycle (fixes bug #112)
106        - added support for the "fine tune" and "pitch bend range"
107          instrument-level gig parameters
108        - fixed minor artifacts in pitch bend handling
109        - added support for GS Reset SysEx message
110        - allow gig files to use unlimited downward pitch shifting
111        - added a limit check for upward pitch shifting
112    
113      * LSCP server:
114        - added new LSCP event "CHANNEL_MIDI" which can be used by frontends to
115          react on MIDI data arriving on certain sampler channels (so far only
116          Note-On and Note-Off events are sent via this LSCP event)
117        - added new LSCP event "DEVICE_MIDI" which can be used by frontends to
118          react on MIDI data arriving on certain MIDI input devices (so far only
119          Note-On and Note-Off events are sent via this LSCP event)
120        - added new LSCP commands: FIND LOST DB_INSTRUMENT_FILES and
121          SET DB_INSTRUMENT FILE_PATH
122        - added new LSCP command: SEND CHANNEL MIDI_DATA which can be used by
123          frontends to send MIDI messages to specific sampler channel
124        - added two additional fields to GET FILE INSTRUMENT INFO command -
125          KEY_BINDINGS and KEYSWITCH_BINDINGS
126        - bugfix: the bank number provided by MIDI_INSTRUMENT_INFO notifications
127          was incorrect
128        - Optimized the retrieval of the MIDI instrument mappings
129        - added new LSCP command "SET VOICES" to globally alter the maximum
130          amount of voices, added new LSCP event "GLOBAL_INFO:VOICES" which will
131          be triggered respectively
132        - added new LSCP command "SET STREAMS" to globally alter the maximum
133          amount of disk streams, added new LSCP event "GLOBAL_INFO:STREAMS"
134          which will be triggered respectively
135        - bugfix: retry if "select" returns EINTR (this fixes a crash when
136          a gigedit file dialog is opened)
137        - close all connections when LSCPServer is deleted
138    
139      * Bug fixes:
140        - fixed a crash which occurs when removing a sampler channel waiting
141          to start instrument loading after another channel
142        - fixed a crash which occurs when removing a sampler channel with
143          instrument loading in progress (bug #113)
144        - fixed termination caused by uncaught exception when adding MIDI
145          instrument with PERSISTENT load mode
146        - fixed possible iterator invalidations when resetting the sampler
147        - fixed memory leaks when issuing the following LSCP commands:
148          GET AUDIO_OUTPUT_DRIVER INFO
149          GET AUDIO_OUTPUT_DRIVER_PARAMETER INFO
150          GET MIDI_INPUT_DRIVER INFO
151          GET MIDI_INPUT_DRIVER_PARAMETER INFO
152        - fixed possible compilation error when sqlite is not present
153        - fixed orphaned pointers when setting maximum voices limit (bug #118)
154        - fixed crash when changing the audio output device of a sampler
155          channel with loaded instrument and start playing notes
156        - fixed endless loop in Engine::SuspendAll() (bug #120)
157    
158    
159    Version 0.5.1 (6 December 2007)
160    
161      * packaging changes:
162        - added autoconf checks for pthread library
163        - added autoconf check for pthread bug found on certain NPTL-enabled
164          glibc versions (see Gentoo bug report #194076)
165        - added autoconf checks for MS Windows
166    
167      * general changes:
168        - bugfix: the thread used by an editor plugin didn't die when the
169          editor closed
170        - bugfix: Ringbuffer.h: fill_write_space_with_null() did not zero
171          out all the space. operator--() did not apply size_mask after
172          decrementing the read_ptr. DEFAULT_WRAP_ELEMENTS set to 0 in
173          order to avoid problems with the _NonVolatileReader functions.
174        - bugfix: Stream.h: added a missing divide by BytesPerSample in
175          GetWriteSpace(). Since this function is currently only used in
176          the stream's qsort() compare function, it didn't trigger any
177          bugs.
178        - Resampler.h, Synthesizer.h: cubic interpolation now works in
179          24bit mode too. Faster method to read 24bit words on little
180          endian machines (x86): replaced 3 byte reads + shifts with a 1
181          unaligned 32bit read and shift
182        - experimental support for MS Windows (MIDI input via MME, AUDIO
183          output via ASIO)
184        - made handling of SIGINT signal (Ctrl-C) a bit more robust
185        - support for monitoring the total number of active disk streams
186          (new LSCP commands: GET TOTAL_STREAM_COUNT,
187          SUBSCRIBE TOTAL_STREAM_COUNT, UNSUBSCRIBE TOTAL_STREAM_COUNT)
188    
189      * AUDIO driver:
190        - added Windows ASIO low latency audio driver
191    
192      * MIDI driver:
193        - added MME Windows MIDI driver
194    
195      * LSCP server:
196        - added support for Windows style path / filenames, however with
197          forward slash path separators instead of backslash
198          (i.e. "C:/foo/bar.gig")
199        - allow naughty liblscp to send non-string device parameters within
200          apostrophes as well
201        - added new LSCP commands: "GET FILE INSTRUMENTS <file>",
202          "LIST FILE INSTRUMENTS <file>" and
203          "GET FILE INSTRUMENT INFO <file> <index>" for retrieving informations
204          about an arbitrary instrument file on the system where the sampler is
205          running on
206    
207    Version 0.5.0 (15 October 2007)
208    
209      * packaging changes:
210        - config.h is not going to be installed along with liblinuxsampler's
211          API header files anymore
212        - only the API relevant header (and source) files will be exported to
213          the Doxygen API documentation (explicitly listed in Doxyfile.in)
214        - added completely new XCode project files for Mac OSX which is now
215          capable to execute our autoconf environment, thus no need anymore
216          to maintain the compile time configuration file (osx/version.h) for
217          OSX manually (patch by Toshi Nagata)
218        - fixed buggy boolean --enable-foo / --disable-foo configure script
219          parameters
220        - global.h now only covers global definitions that are needed for the
221          C++ API header files, all implementation internal global definitions
222          are now in global_private.h
223        - atomic.h is not exposed to the C++ API anymore
224        - no need to include config.h anymore for using LS's API header files
225        - fixed warnings in API doc generation
226    
227      * general changes:
228        - replaced the old, confusing MIDI program change mechanism by a
229          flexible MIDI instrument mapper which allows to map arbitrary
230          (MIDI bank, MIDI program) pairs with arbitrary
231          (engine type, instrument file, file index) triplets which will be
232          loaded on the respective channel when such MIDI program change
233          messages arrive, beside that, each entry allows to define a life-time
234          strategy for the instrument, so the user can define whether the
235          instrument should i.e. be permanently loaded (to be able to switch
236          quickly among sounds) or i.e. loaded just on demand when the
237          respective program change arrives (to safe RAM space), as well as a
238          global volume factor for each entry, so the user can adjust the volume
239          dynamic of his mapped instrument collection without having to modify
240          the instrument files, also one can manage arbitrary amount of such
241          MIDI instrument maps and assign each sampler channel individually
242          a certain map, so that i.e. separation of normal instruments and
243          drumkits is possible
244        - new notification events for tracking changes to audio/MIDI devices,
245          MIDI instrument maps, MIDI instruments, FX sends, global volume.
246        - sampler was limited to load max. 200 instruments in the background
247          due to a constant size RingBuffer FIFO which is now replaced by a
248          dynamic (unlimited) size std::list FIFO
249        - added FX sends, these allow to route audio signals to arbitrary audio
250          output channels for being processed by external effect processors
251          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
252          controllers
253        - global (sampler wide) volume can now be controlled at runtime
254        - Implemented new, improved notification system
255        - fixed compilation errors regarding OSX
256          (patch by Toshi Nagata)
257        - implemented instruments database
258        - added support for escape sequences to the instruments database
259        - added highly experimental support for on-the-fly instrument editing
260          within the sampler's process (by using instrument editor plugins),
261          you'll notice the new "Registered instrument editors:" message on
262          startup, added a new LSCP command:
263          "EDIT CHANNEL INSTRUMENT <sampler-channel>"
264          to spawn a matching instrument editor for the instrument on the
265          given sampler channel, the plugin path can be overridden at compile
266          time with ./configure --enable-plugin-dir=/some/dir
267        - added experimental code for synchronizing instrument editors hosted
268          in the sampler's process to safely edit instruments while playing
269          without a crash (hopefully) by either suspending single regions
270          wherever possible or if unavoidable whole engine(s)
271        - fixed several issues in fundamental "Thread" class: set scheduling
272          policy and priority on thread level, set a minimum stack size for
273          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
274          threads simply inherited properties of starting thread instead of
275          setting their own policy and priority
276        - minor fix in our automatic stack trace mechanism on crashes, the
277          main process did not wait for the stack trace process to finish
278          its output
279        - fixed some minor memory leaks
280        - reenabled assembly features support, at the moment only for
281          enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
282        - minor assembly fix in x86 features detection (don't use the PIC
283          register, to avoid relocations in the text segment at runtime)
284        - POSIX callback functions of Thread.h are hidden
285    
286      * MIDI driver:
287        - dispatch bank select (MSB and LSB) messages
288    
289      * audio driver:
290        - the ALSA audio output driver parameters now reflect the correct
291          parameter value ranges for the respective selected sound card
292          (patch by Till Wimmer, a bit fixed and extended)
293    
294      * Gigasampler format engine:
295        - if a filter is used and EG2 finishes before EG1, let the voice
296          die when EG2 has finished (this fixes a problem with clicks and
297          voice starvation for some gigs)
298        - playback is no longer disabled during instrument loading
299        - all notes playing on a channel that changes its instrument keep
300          playing with the old instrument until they get a note off
301          command
302        - EG fix: a release value of zero could cause noises or crash
303        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
304        - EG fine tuning: when attack is zero the EG starts at a level
305          above max sustain level, which means that there is a decay phase
306          even if sustain is 100%
307        - more EG fixes: the level could sometimes go below zero and cause
308          noises or crashes
309        - minor fix of EGDecay (patch by Toshi Nagata)
310        - fixed compiler error when --enable-override-filter-type was
311          supplied to the configure script (fixes #46)
312        - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
313          instead of a fix value
314        - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
315          127 (solo mode) only kill voices if the respective mode really
316          changed
317    
318      * LSCP server:
319        - fixed compile time error for old Bison versions
320          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
321        - parser now supports extended ASCII character set
322          (up to ASCII code 255, i.e. includes now umlauts and accents)
323        - filename arguments in LSCP commands now allow to use escape
324          sequences, that is directly literal as one of: \', \", \\, \n, \r,
325          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
326          code value like \xf2) (fixes bug #24)
327        - the following LSCP commands now also support escape sequences for at
328          least one of their text-based parameters (i.e. name, description):
329          "ADD MIDI_INSTRUMENT_MAP", "MAP MIDI_INSTRUMENT",
330          "SET MIDI_INSTRUMENT_MAP NAME", "SET FX_SEND NAME", "CREATE FX_SEND",
331          "SET DB_INSTRUMENT_DIRECTORY NAME",
332          "SET DB_INSTRUMENT_DIRECTORY DESCRIPTION", "SET DB_INSTRUMENT NAME",
333          "SET DB_INSTRUMENT DESCRIPTION", "FIND DB_INSTRUMENTS",
334          "FIND DB_INSTRUMENT_DIRECTORIES"
335        - returns verbose syntax errors (line and column where syntax error
336          occured, the unexpected character and the actually expected, possible
337          character(s), the latter only if less than 5 possibilities)
338        - made sure that LSCP syntax is not affected by gigedit locale
339          settings
340        - bugfix regarding strings parameter lists: all comma separated lists
341          of strings were treated as being one string containing commas
342          (fixes #57)
343    
344      * Bug fixes:
345        - fixed crash occurring on certain LSCP scripts (Bug 39)
346        - another thread safety fix for lscp "load engine" and "set
347          channel audio output device"
348        - fixed a crash which occurs when reassigning the same engine
349          on a sampler channel with connected MIDI device
350        - fixed a crash which occurs when changing the number of ports of a MIDI
351          device connected to a sampler channel to number less then or equal
352          to the index of the port to which the sampler channel is connected.
353        - The previous bindings were not been disconnected when altering
354          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
355          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
356        - The active stream/voice count statistic was incorrect.
357        - notification events were not been sent for some sampler
358          channel changes
359        - added default min and max values to restrict the number of allowed
360          audio output channels and MIDI input ports
361        - the connection to the PCM interface is now closed when destroying
362          an audio output device
363        - files with slash in their path or filename could not be loaded
364    
365      * test cases:
366        - updated and fixed (haven't been touched in a while)
367    
368    Version 0.4.0 (24 November 2006)
369    
370      * packaging changes:
371        - changed deprecated copyright attribute to license; added ldconfig
372          to post-(un)install steps; added devel package for liblinuxsampler;
373          to linuxsampler.spec (RPM)
374        - install necessary development header files for allowing 3rd party
375          applications to link against liblinuxsampler
376        - liblinuxsampler's API documentation can be generated with 'make docs'
377          (Doxygen required)
378        - added benchmark to automatically detect the best triangle LFO
379          implementation (currently either an integer math solution or a
380          di-harmonic approximation), automatic detection can be overriden
381          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
382          configure script argument though (mandatory for cross-compilation)
383        - do not automatically pick optimized gcc flags if the user already
384          provided some on his own (as CXXFLAGS)
385        - added compile time option to disable processing of All-Notes-Off MIDI
386          messages
387        - added compile time options to allow disabling the various audio and
388          MIDI drivers
389        - fixed automatic GCC CPU switch detection on PPC
390          (patch by Ebrahim Mayat)
391    
392      * Gigasampler format engine:
393        - extensive synthesis optimization
394          (reimplementation of EGs and LFO(s), removed synthesis parameter
395          prerendering and the synthesis parameter matrix in general, splitting
396          each audio fragment into subfragments now where each subfragment uses
397          constant pitch and filter coefficients. The volume coefficient is
398          linearly interpolated inside a subfragment, unless
399          --disable-interpolate-volume is set.)
400        - fine tuning of the EG modulation parameters
401        - improved filter cutoff calculation by adding support for the
402          following gig parameters: Cutoff freq (used when no cutoff
403          controller is defined), Control invert, Minimum cutoff, Velocity
404          curve and Velocity range. The keyboard tracking now scales
405          cutoff frequency instead of resonance.
406        - added support for gig parameter Resonance.
407        - fixed bug in sysex handling (patch by Juan Linietsky)
408        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
409          which can be overridden with --enable-global-attenuation
410        - EG fixes: made the length of "attack hold" stage more
411          accurate. Release stage can now start before attack stage
412          ends. Cancel release didn't work when sustain was zero. Attack
413          time now has a minimal value to prevent clicks.
414        - fixed pitch changes larger than one octave
415        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
416        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
417          all modes can be altered via standard GM messages, that is CC5 for
418          altering portamento time, CC65 for enabling / disabling portamento
419          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
420        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
421          parameter) and crossfade
422        - added support for the "attenuation controller threshold" gig
423          parameter
424        - added smoothing of volume changes caused by control change
425          messages
426        - sample loop parameters are now taken from the DimensionRegion
427          instead of the wave chunk
428        - fixed keyswitching for v3 gigs with a number of keyswitch splits
429          not equal to a power of two
430        - reimplementation of the filter algorithm. The new filter is more
431          accurate and supports all gig filter types, including bandreject
432          and lowpass turbo.
433        - real support for 24 bit samples - samples are not truncated to
434          16 bits anymore
435        - support for aftertouch (channel pressure, not polyphonic
436          aftertouch)
437        - LFO1 behaviour fixed (dampening from max volume instead of
438          amplifying from 0)
439    
440      * LSCP server:
441        - fixed application exit on broken pipe error (fixes bug #20)
442        - fixed the notification messages delay due to lack of
443          network activity (fixes bug #26)
444        - fixed parser bug which occured on space(s) within device parameters
445          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
446    
447      * audio driver:
448        - added aRts audio output driver (by no means RT safe)
449    
450      * MIDI driver:
451        - fixed legacy sysex code which caused dispatching of MIDI SysEx
452          messages several times instead of once
453        - API extension for MIDI drivers which already supply exact time stamps
454          for events (i.e. for offline rendering based MIDI drivers)
455        - added checks for bad MIDI data
456    
457      * linuxsampler application:
458        - show available sampler engine types on startup
459    
460      * general changes:
461        - support for muting sampler channels and solo mode of the same, two new
462          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
463          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
464          introduced for this, the behavior is the same like on a mixer console
465          (patch by Grigor Iliev, a bit adjusted). Also added configure option
466          --enable-process-muted-channels which can be used to enable the
467          processing of muted channels.
468        - support for sostenuto pedal
469        - support for monitoring the total number of active voices
470          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
471          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
472        - fixed some memory management errors
473        - fixed some concurrency problems that could lead to crashes when
474          LSCP commands were executed
475        - fixed crash when instrument loading failed previously on the same
476          sampler channel (fixes bug #36)
477    
478  Version 0.3.3 (15 July 2005)  Version 0.3.3 (15 July 2005)
479    
480    * packaging changes:    * packaging changes:

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