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revision 617 by schoenebeck, Wed Jun 8 21:00:06 2005 UTC revision 1763 by iliev, Wed Sep 3 17:18:51 2008 UTC
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1  Version CVS HEAD (?)  Version CVS HEAD (?)
2    
3    * packaging changes:    * 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    
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    
29      * audio driver:
30        - removed the nonsense audio channel constraint (which was hard coded to
31          max. 100 audio channels) for most audio drivers
32        - JACK audio driver did not offer a device parameter "SAMPLERATE" as
33          opposed to the LSCP specs
34        - bugfix: the SAMPLERATE parameter of some drivers (e.g. JACK)
35          reflected the wrong value
36        - fixed a memory management bug in ASIO driver
37        - Makefile fix: JACK_CFLAGS wasn't used
38        - JACK: use jack_client_open instead of thedeprecated
39          jack_client_new
40    
41      * MIDI driver:
42        - added JACK MIDI driver
43        - dispatch bank select as ordinary CC as well, the user might seriously
44          want to (mis)use it for some purpose ("fixed" in all current MIDI
45          input drivers: ALSA, CoreMIDI, JACK, MidiShare, MME)
46    
47      * instruments database:
48        - avoid time consuming samples scanning when adding instruments
49          to the instruments database
50        - added support for handling lost files in the instruments database
51    
52      * Gigasampler format engine:
53        - fixed a memory leak that could happen when a channel was deleted
54          while notes were playing
55        - made it possible to load an instrument even if the audio thread
56          isn't running
57        - added partial support for the "Controller Triggered" MIDI rule,
58          enough for piano gigs with pedal noise samples
59        - minor fix: only mark FX sends as being modified if really the
60          respective FX send MIDI controller was used
61        - added support for GM global device volume SysEx message
62          (can be selected at compile time to either apply globally to the
63          whole sampler [default] or only to the sampler channels that are
64          connected to the respective MIDI input port the SysEx message arrived
65          on)
66        - bugfix: notes triggered at position 0 in the audio buffer were
67          sometimes wrongly killed in the same buffer, causing no sound to
68          be played
69        - added support for chromatic / drumkit mode Roland GS Sysex message
70          which is usally used to switch a part between chromatic sounds and
71          drumkit sounds (as opposed to their common default setting of MIDI
72          part 10 being a drumkit part and all other ones chromatic parts), in
73          LS however one can switch between the first 16 MIDI instrument maps
74          defined for the sampler
75    
76      * LSCP server:
77        - added new LSCP event "CHANNEL_MIDI" which can be used by frontends to
78          react on MIDI data arriving on certain sampler channels (so far only
79          Note-On and Note-Off events are sent via this LSCP event)
80        - added new LSCP event "DEVICE_MIDI" which can be used by frontends to
81          react on MIDI data arriving on certain MIDI input devices (so far only
82          Note-On and Note-Off events are sent via this LSCP event)
83        - added new LSCP commands: FIND LOST DB_INSTRUMENT_FILES and
84          SET DB_INSTRUMENT FILE_PATH
85        - bugfix: the bank number provided by MIDI_INSTRUMENT_INFO notifications
86          was incorrect
87        - Optimized the retrieval of the MIDI instrument mappings
88    
89      * Bug fixes:
90        - fixed a crash which occurs when removing a sampler channel waiting
91          to start instrument loading after another channel
92    
93    
94    Version 0.5.1 (6 December 2007)
95    
96      * packaging changes:
97        - added autoconf checks for pthread library
98        - added autoconf check for pthread bug found on certain NPTL-enabled
99          glibc versions (see Gentoo bug report #194076)
100        - added autoconf checks for MS Windows
101    
102      * general changes:
103        - bugfix: the thread used by an editor plugin didn't die when the
104          editor closed
105        - bugfix: Ringbuffer.h: fill_write_space_with_null() did not zero
106          out all the space. operator--() did not apply size_mask after
107          decrementing the read_ptr. DEFAULT_WRAP_ELEMENTS set to 0 in
108          order to avoid problems with the _NonVolatileReader functions.
109        - bugfix: Stream.h: added a missing divide by BytesPerSample in
110          GetWriteSpace(). Since this function is currently only used in
111          the stream's qsort() compare function, it didn't trigger any
112          bugs.
113        - Resampler.h, Synthesizer.h: cubic interpolation now works in
114          24bit mode too. Faster method to read 24bit words on little
115          endian machines (x86): replaced 3 byte reads + shifts with a 1
116          unaligned 32bit read and shift
117        - experimental support for MS Windows (MIDI input via MME, AUDIO
118          output via ASIO)
119        - made handling of SIGINT signal (Ctrl-C) a bit more robust
120        - support for monitoring the total number of active disk streams
121          (new LSCP commands: GET TOTAL_STREAM_COUNT,
122          SUBSCRIBE TOTAL_STREAM_COUNT, UNSUBSCRIBE TOTAL_STREAM_COUNT)
123    
124      * AUDIO driver:
125        - added Windows ASIO low latency audio driver
126    
127      * MIDI driver:
128        - added MME Windows MIDI driver
129    
130      * LSCP server:
131        - added support for Windows style path / filenames, however with
132          forward slash path separators instead of backslash
133          (i.e. "C:/foo/bar.gig")
134        - allow naughty liblscp to send non-string device parameters within
135          apostrophes as well
136        - added new LSCP commands: "GET FILE INSTRUMENTS <file>",
137          "LIST FILE INSTRUMENTS <file>" and
138          "GET FILE INSTRUMENT INFO <file> <index>" for retrieving informations
139          about an arbitrary instrument file on the system where the sampler is
140          running on
141    
142    Version 0.5.0 (15 October 2007)
143    
144      * packaging changes:
145        - config.h is not going to be installed along with liblinuxsampler's
146          API header files anymore
147        - only the API relevant header (and source) files will be exported to
148          the Doxygen API documentation (explicitly listed in Doxyfile.in)
149        - added completely new XCode project files for Mac OSX which is now
150          capable to execute our autoconf environment, thus no need anymore
151          to maintain the compile time configuration file (osx/version.h) for
152          OSX manually (patch by Toshi Nagata)
153        - fixed buggy boolean --enable-foo / --disable-foo configure script
154          parameters
155        - global.h now only covers global definitions that are needed for the
156          C++ API header files, all implementation internal global definitions
157          are now in global_private.h
158        - atomic.h is not exposed to the C++ API anymore
159        - no need to include config.h anymore for using LS's API header files
160        - fixed warnings in API doc generation
161    
162      * general changes:
163        - replaced the old, confusing MIDI program change mechanism by a
164          flexible MIDI instrument mapper which allows to map arbitrary
165          (MIDI bank, MIDI program) pairs with arbitrary
166          (engine type, instrument file, file index) triplets which will be
167          loaded on the respective channel when such MIDI program change
168          messages arrive, beside that, each entry allows to define a life-time
169          strategy for the instrument, so the user can define whether the
170          instrument should i.e. be permanently loaded (to be able to switch
171          quickly among sounds) or i.e. loaded just on demand when the
172          respective program change arrives (to safe RAM space), as well as a
173          global volume factor for each entry, so the user can adjust the volume
174          dynamic of his mapped instrument collection without having to modify
175          the instrument files, also one can manage arbitrary amount of such
176          MIDI instrument maps and assign each sampler channel individually
177          a certain map, so that i.e. separation of normal instruments and
178          drumkits is possible
179        - new notification events for tracking changes to audio/MIDI devices,
180          MIDI instrument maps, MIDI instruments, FX sends, global volume.
181        - sampler was limited to load max. 200 instruments in the background
182          due to a constant size RingBuffer FIFO which is now replaced by a
183          dynamic (unlimited) size std::list FIFO
184        - added FX sends, these allow to route audio signals to arbitrary audio
185          output channels for being processed by external effect processors
186          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
187          controllers
188        - global (sampler wide) volume can now be controlled at runtime
189        - Implemented new, improved notification system
190        - fixed compilation errors regarding OSX
191          (patch by Toshi Nagata)
192        - implemented instruments database
193        - added support for escape sequences to the instruments database
194        - added highly experimental support for on-the-fly instrument editing
195          within the sampler's process (by using instrument editor plugins),
196          you'll notice the new "Registered instrument editors:" message on
197          startup, added a new LSCP command:
198          "EDIT CHANNEL INSTRUMENT <sampler-channel>"
199          to spawn a matching instrument editor for the instrument on the
200          given sampler channel, the plugin path can be overridden at compile
201          time with ./configure --enable-plugin-dir=/some/dir
202        - added experimental code for synchronizing instrument editors hosted
203          in the sampler's process to safely edit instruments while playing
204          without a crash (hopefully) by either suspending single regions
205          wherever possible or if unavoidable whole engine(s)
206        - fixed several issues in fundamental "Thread" class: set scheduling
207          policy and priority on thread level, set a minimum stack size for
208          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
209          threads simply inherited properties of starting thread instead of
210          setting their own policy and priority
211        - minor fix in our automatic stack trace mechanism on crashes, the
212          main process did not wait for the stack trace process to finish
213          its output
214        - fixed some minor memory leaks
215        - reenabled assembly features support, at the moment only for
216          enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
217        - minor assembly fix in x86 features detection (don't use the PIC
218          register, to avoid relocations in the text segment at runtime)
219        - POSIX callback functions of Thread.h are hidden
220    
221      * MIDI driver:
222        - dispatch bank select (MSB and LSB) messages
223    
224      * audio driver:
225        - the ALSA audio output driver parameters now reflect the correct
226          parameter value ranges for the respective selected sound card
227          (patch by Till Wimmer, a bit fixed and extended)
228    
229      * Gigasampler format engine:
230        - if a filter is used and EG2 finishes before EG1, let the voice
231          die when EG2 has finished (this fixes a problem with clicks and
232          voice starvation for some gigs)
233        - playback is no longer disabled during instrument loading
234        - all notes playing on a channel that changes its instrument keep
235          playing with the old instrument until they get a note off
236          command
237        - EG fix: a release value of zero could cause noises or crash
238        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
239        - EG fine tuning: when attack is zero the EG starts at a level
240          above max sustain level, which means that there is a decay phase
241          even if sustain is 100%
242        - more EG fixes: the level could sometimes go below zero and cause
243          noises or crashes
244        - minor fix of EGDecay (patch by Toshi Nagata)
245        - fixed compiler error when --enable-override-filter-type was
246          supplied to the configure script (fixes #46)
247        - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
248          instead of a fix value
249        - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
250          127 (solo mode) only kill voices if the respective mode really
251          changed
252    
253      * LSCP server:
254        - fixed compile time error for old Bison versions
255          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
256        - parser now supports extended ASCII character set
257          (up to ASCII code 255, i.e. includes now umlauts and accents)
258        - filename arguments in LSCP commands now allow to use escape
259          sequences, that is directly literal as one of: \', \", \\, \n, \r,
260          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
261          code value like \xf2) (fixes bug #24)
262        - the following LSCP commands now also support escape sequences for at
263          least one of their text-based parameters (i.e. name, description):
264          "ADD MIDI_INSTRUMENT_MAP", "MAP MIDI_INSTRUMENT",
265          "SET MIDI_INSTRUMENT_MAP NAME", "SET FX_SEND NAME", "CREATE FX_SEND",
266          "SET DB_INSTRUMENT_DIRECTORY NAME",
267          "SET DB_INSTRUMENT_DIRECTORY DESCRIPTION", "SET DB_INSTRUMENT NAME",
268          "SET DB_INSTRUMENT DESCRIPTION", "FIND DB_INSTRUMENTS",
269          "FIND DB_INSTRUMENT_DIRECTORIES"
270        - returns verbose syntax errors (line and column where syntax error
271          occured, the unexpected character and the actually expected, possible
272          character(s), the latter only if less than 5 possibilities)
273        - made sure that LSCP syntax is not affected by gigedit locale
274          settings
275        - bugfix regarding strings parameter lists: all comma separated lists
276          of strings were treated as being one string containing commas
277          (fixes #57)
278    
279      * Bug fixes:
280        - fixed crash occurring on certain LSCP scripts (Bug 39)
281        - another thread safety fix for lscp "load engine" and "set
282          channel audio output device"
283        - fixed a crash which occurs when reassigning the same engine
284          on a sampler channel with connected MIDI device
285        - fixed a crash which occurs when changing the number of ports of a MIDI
286          device connected to a sampler channel to number less then or equal
287          to the index of the port to which the sampler channel is connected.
288        - The previous bindings were not been disconnected when altering
289          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
290          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
291        - The active stream/voice count statistic was incorrect.
292        - notification events were not been sent for some sampler
293          channel changes
294        - added default min and max values to restrict the number of allowed
295          audio output channels and MIDI input ports
296        - the connection to the PCM interface is now closed when destroying
297          an audio output device
298        - files with slash in their path or filename could not be loaded
299    
300      * test cases:
301        - updated and fixed (haven't been touched in a while)
302    
303    Version 0.4.0 (24 November 2006)
304    
305      * packaging changes:
306        - changed deprecated copyright attribute to license; added ldconfig
307          to post-(un)install steps; added devel package for liblinuxsampler;
308          to linuxsampler.spec (RPM)
309        - install necessary development header files for allowing 3rd party
310          applications to link against liblinuxsampler
311        - liblinuxsampler's API documentation can be generated with 'make docs'
312          (Doxygen required)
313        - added benchmark to automatically detect the best triangle LFO
314          implementation (currently either an integer math solution or a
315          di-harmonic approximation), automatic detection can be overriden
316          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
317          configure script argument though (mandatory for cross-compilation)
318        - do not automatically pick optimized gcc flags if the user already
319          provided some on his own (as CXXFLAGS)
320        - added compile time option to disable processing of All-Notes-Off MIDI
321          messages
322        - added compile time options to allow disabling the various audio and
323          MIDI drivers
324        - fixed automatic GCC CPU switch detection on PPC
325          (patch by Ebrahim Mayat)
326    
327      * Gigasampler format engine:
328        - extensive synthesis optimization
329          (reimplementation of EGs and LFO(s), removed synthesis parameter
330          prerendering and the synthesis parameter matrix in general, splitting
331          each audio fragment into subfragments now where each subfragment uses
332          constant pitch and filter coefficients. The volume coefficient is
333          linearly interpolated inside a subfragment, unless
334          --disable-interpolate-volume is set.)
335        - fine tuning of the EG modulation parameters
336        - improved filter cutoff calculation by adding support for the
337          following gig parameters: Cutoff freq (used when no cutoff
338          controller is defined), Control invert, Minimum cutoff, Velocity
339          curve and Velocity range. The keyboard tracking now scales
340          cutoff frequency instead of resonance.
341        - added support for gig parameter Resonance.
342        - fixed bug in sysex handling (patch by Juan Linietsky)
343        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
344          which can be overridden with --enable-global-attenuation
345        - EG fixes: made the length of "attack hold" stage more
346          accurate. Release stage can now start before attack stage
347          ends. Cancel release didn't work when sustain was zero. Attack
348          time now has a minimal value to prevent clicks.
349        - fixed pitch changes larger than one octave
350        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
351        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
352          all modes can be altered via standard GM messages, that is CC5 for
353          altering portamento time, CC65 for enabling / disabling portamento
354          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
355        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
356          parameter) and crossfade
357        - added support for the "attenuation controller threshold" gig
358          parameter
359        - added smoothing of volume changes caused by control change
360          messages
361        - sample loop parameters are now taken from the DimensionRegion
362          instead of the wave chunk
363        - fixed keyswitching for v3 gigs with a number of keyswitch splits
364          not equal to a power of two
365        - reimplementation of the filter algorithm. The new filter is more
366          accurate and supports all gig filter types, including bandreject
367          and lowpass turbo.
368        - real support for 24 bit samples - samples are not truncated to
369          16 bits anymore
370        - support for aftertouch (channel pressure, not polyphonic
371          aftertouch)
372        - LFO1 behaviour fixed (dampening from max volume instead of
373          amplifying from 0)
374    
375      * LSCP server:
376        - fixed application exit on broken pipe error (fixes bug #20)
377        - fixed the notification messages delay due to lack of
378          network activity (fixes bug #26)
379        - fixed parser bug which occured on space(s) within device parameters
380          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
381    
382      * audio driver:
383        - added aRts audio output driver (by no means RT safe)
384    
385      * MIDI driver:
386        - fixed legacy sysex code which caused dispatching of MIDI SysEx
387          messages several times instead of once
388        - API extension for MIDI drivers which already supply exact time stamps
389          for events (i.e. for offline rendering based MIDI drivers)
390        - added checks for bad MIDI data
391    
392      * linuxsampler application:
393        - show available sampler engine types on startup
394    
395      * general changes:
396        - support for muting sampler channels and solo mode of the same, two new
397          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
398          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
399          introduced for this, the behavior is the same like on a mixer console
400          (patch by Grigor Iliev, a bit adjusted). Also added configure option
401          --enable-process-muted-channels which can be used to enable the
402          processing of muted channels.
403        - support for sostenuto pedal
404        - support for monitoring the total number of active voices
405          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
406          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
407        - fixed some memory management errors
408        - fixed some concurrency problems that could lead to crashes when
409          LSCP commands were executed
410        - fixed crash when instrument loading failed previously on the same
411          sampler channel (fixes bug #36)
412    
413    Version 0.3.3 (15 July 2005)
414    
415      * packaging changes:
416        - fixed compilation with gcc 4.0
417    
418      * Gigasampler format engine:
419        - LFO preprocessing was performed even though the respective LFO was
420          disabled by the instrument patch (minor efficiency fix)
421        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
422          for volume ramp downs in the same fragment (needed for current voice
423          stealing implementation) then simply inform the user with a warning
424          about possible click sounds and reduce the volume ramp down
425          appropriately instead of cancelling the audio device connection
426    
427    Version 0.3.2 (24 June 2005)
428    
429      * packaging changes:
430      - updated autotools build files to compile on OS X      - updated autotools build files to compile on OS X
431        (conditional compilation of CoreMIDI and MidiShare drivers)        (conditional compilation of CoreMIDI and MidiShare drivers)
432      - hand-crafted assembly optimization code can be disabled with      - hand-crafted assembly optimization code can be disabled with
433        './configure --disable-asm' (definitely not recommended)        './configure --disable-asm' (definitely not recommended)
434    * support for the gig parameters for "release velocity response"      - fixed 'make dist' rule to include all necessary files
435      curves      - require automake (>= 1.5) for 'make -f Makefile.cvs'
436    * fine tuning of the EGADSR envelope        (due to 'dist-bzip2' automake option)
437    
438      * Gigasampler format engine:
439        - support for the gig parameters for "release velocity response" curves
440        - fine tuning of the EGADSR envelope
441        - volume of release triggered samples now depends on note-on velocity,
442          note length and gig parameter "release trigger decay" instead of
443          note-off velocity.
444        - revised voice stealing
445          (fixes crash and endless loop caused by voice stealing)
446        - don't reset scale tuning on instrument or audio output device change
447        - handle key group conflicts right at the beginning of each fragment
448          instead of when the respective voice is actually launched
449          (fixes undefined behavior if stolen voices belonged to a key group -
450          this case was followed by a "killed voice survived" error message)
451        - fixed minor issue with null/silence samples
452          (those stole voices even though they don't need a voice at all which
453          resulted in "voice stealing didn't work out" messages)
454        - don't reset volume, pan, pitch and MIDI controller values on
455          instrument or audio output device change
456    
457      * LSCP server:
458        - fixed some crashes (patch by Grigor Iliev, fixes #19)
459        - fixed LSCP event "CHANNEL_INFO" notification
460          (e.g. did not notify on volume changes or MIDI program change events)
461    
462      * linuxsampler application:
463        - added command line parameters --lscp-addr and --lscp-port to override
464          default IP address and port of LSCP server
465    
466  Version 0.3.1 (24 May 2005)  Version 0.3.1 (24 May 2005)
467    

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