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revision 620 by schoenebeck, Wed Jun 8 23:16:13 2005 UTC revision 1695 by schoenebeck, Sat Feb 16 01:09:33 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    
9      * general changes:
10        - bugfix: on some POSIX systems instrument editor plugins refused to
11          load as we used a non-portable Linux specific struct field
12          (fixes bug #70, patch by Ronald Baljeu)
13        - fixed endless loop which occured when loading an instrument editor
14          plugin DLL on Windows systems failed
15        - fixed memory leaks that occurred when liblinuxsampler was unloaded
16        - optimized the SynchronizedConfig class so it doesn't wait
17          unnecessarily long after an update
18        - added support for notifying instrument editors on note-on / note-off
19          events (e.g. to highlight the pressed keys on the virtual keyboard
20          of gigedit)
21        - added support for triggering notes by instrument editors (see above)
22        - be verbose on DLL load errors (on Linux)
23        - fixed di-harmonic triangle LFO implementation (this LFO implementation
24          is only used by very few systems, most pick the int math
25          implementation, which is usually faster)
26    
27      * audio driver:
28        - removed the nonsense audio channel constraint (which was hard coded to
29          max. 100 audio channels) for most audio drivers
30        - JACK audio driver did not offer a device parameter "SAMPLERATE" as
31          opposed to the LSCP specs
32        - bugfix: the SAMPLERATE parameter of some drivers (e.g. JACK)
33          reflected the wrong value
34        - fixed a memory management bug in ASIO driver
35    
36      * MIDI driver:
37        - added JACK MIDI driver
38    
39      * instruments database:
40        - avoid time consuming samples scanning when adding instruments
41          to the instruments database
42    
43      * Gigasampler format engine:
44        - fixed a memory leak that could happen when a channel was deleted
45          while notes were playing
46        - made it possible to load an instrument even if the audio thread
47          isn't running
48    
49      * LSCP server:
50        - added new LSCP event "CHANNEL_MIDI" which can be used by frontends to
51          react on MIDI data arriving on certain sampler channels (so far only
52          Note-On and Note-Off events are sent via this LSCP event)
53        - added new LSCP event "DEVICE_MIDI" which can be used by frontends to
54          react on MIDI data arriving on certain MIDI input devices (so far only
55          Note-On and Note-Off events are sent via this LSCP event)
56    
57    Version 0.5.1 (6 December 2007)
58    
59      * packaging changes:
60        - added autoconf checks for pthread library
61        - added autoconf check for pthread bug found on certain NPTL-enabled
62          glibc versions (see Gentoo bug report #194076)
63        - added autoconf checks for MS Windows
64    
65      * general changes:
66        - bugfix: the thread used by an editor plugin didn't die when the
67          editor closed
68        - bugfix: Ringbuffer.h: fill_write_space_with_null() did not zero
69          out all the space. operator--() did not apply size_mask after
70          decrementing the read_ptr. DEFAULT_WRAP_ELEMENTS set to 0 in
71          order to avoid problems with the _NonVolatileReader functions.
72        - bugfix: Stream.h: added a missing divide by BytesPerSample in
73          GetWriteSpace(). Since this function is currently only used in
74          the stream's qsort() compare function, it didn't trigger any
75          bugs.
76        - Resampler.h, Synthesizer.h: cubic interpolation now works in
77          24bit mode too. Faster method to read 24bit words on little
78          endian machines (x86): replaced 3 byte reads + shifts with a 1
79          unaligned 32bit read and shift
80        - experimental support for MS Windows (MIDI input via MME, AUDIO
81          output via ASIO)
82        - made handling of SIGINT signal (Ctrl-C) a bit more robust
83        - support for monitoring the total number of active disk streams
84          (new LSCP commands: GET TOTAL_STREAM_COUNT,
85          SUBSCRIBE TOTAL_STREAM_COUNT, UNSUBSCRIBE TOTAL_STREAM_COUNT)
86    
87      * AUDIO driver:
88        - added Windows ASIO low latency audio driver
89    
90      * MIDI driver:
91        - added MME Windows MIDI driver
92    
93      * LSCP server:
94        - added support for Windows style path / filenames, however with
95          forward slash path separators instead of backslash
96          (i.e. "C:/foo/bar.gig")
97        - allow naughty liblscp to send non-string device parameters within
98          apostrophes as well
99        - added new LSCP commands: "GET FILE INSTRUMENTS <file>",
100          "LIST FILE INSTRUMENTS <file>" and
101          "GET FILE INSTRUMENT INFO <file> <index>" for retrieving informations
102          about an arbitrary instrument file on the system where the sampler is
103          running on
104    
105    Version 0.5.0 (15 October 2007)
106    
107      * packaging changes:
108        - config.h is not going to be installed along with liblinuxsampler's
109          API header files anymore
110        - only the API relevant header (and source) files will be exported to
111          the Doxygen API documentation (explicitly listed in Doxyfile.in)
112        - added completely new XCode project files for Mac OSX which is now
113          capable to execute our autoconf environment, thus no need anymore
114          to maintain the compile time configuration file (osx/version.h) for
115          OSX manually (patch by Toshi Nagata)
116        - fixed buggy boolean --enable-foo / --disable-foo configure script
117          parameters
118        - global.h now only covers global definitions that are needed for the
119          C++ API header files, all implementation internal global definitions
120          are now in global_private.h
121        - atomic.h is not exposed to the C++ API anymore
122        - no need to include config.h anymore for using LS's API header files
123        - fixed warnings in API doc generation
124    
125      * general changes:
126        - replaced the old, confusing MIDI program change mechanism by a
127          flexible MIDI instrument mapper which allows to map arbitrary
128          (MIDI bank, MIDI program) pairs with arbitrary
129          (engine type, instrument file, file index) triplets which will be
130          loaded on the respective channel when such MIDI program change
131          messages arrive, beside that, each entry allows to define a life-time
132          strategy for the instrument, so the user can define whether the
133          instrument should i.e. be permanently loaded (to be able to switch
134          quickly among sounds) or i.e. loaded just on demand when the
135          respective program change arrives (to safe RAM space), as well as a
136          global volume factor for each entry, so the user can adjust the volume
137          dynamic of his mapped instrument collection without having to modify
138          the instrument files, also one can manage arbitrary amount of such
139          MIDI instrument maps and assign each sampler channel individually
140          a certain map, so that i.e. separation of normal instruments and
141          drumkits is possible
142        - new notification events for tracking changes to audio/MIDI devices,
143          MIDI instrument maps, MIDI instruments, FX sends, global volume.
144        - sampler was limited to load max. 200 instruments in the background
145          due to a constant size RingBuffer FIFO which is now replaced by a
146          dynamic (unlimited) size std::list FIFO
147        - added FX sends, these allow to route audio signals to arbitrary audio
148          output channels for being processed by external effect processors
149          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
150          controllers
151        - global (sampler wide) volume can now be controlled at runtime
152        - Implemented new, improved notification system
153        - fixed compilation errors regarding OSX
154          (patch by Toshi Nagata)
155        - implemented instruments database
156        - added support for escape sequences to the instruments database
157        - added highly experimental support for on-the-fly instrument editing
158          within the sampler's process (by using instrument editor plugins),
159          you'll notice the new "Registered instrument editors:" message on
160          startup, added a new LSCP command:
161          "EDIT CHANNEL INSTRUMENT <sampler-channel>"
162          to spawn a matching instrument editor for the instrument on the
163          given sampler channel, the plugin path can be overridden at compile
164          time with ./configure --enable-plugin-dir=/some/dir
165        - added experimental code for synchronizing instrument editors hosted
166          in the sampler's process to safely edit instruments while playing
167          without a crash (hopefully) by either suspending single regions
168          wherever possible or if unavoidable whole engine(s)
169        - fixed several issues in fundamental "Thread" class: set scheduling
170          policy and priority on thread level, set a minimum stack size for
171          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
172          threads simply inherited properties of starting thread instead of
173          setting their own policy and priority
174        - minor fix in our automatic stack trace mechanism on crashes, the
175          main process did not wait for the stack trace process to finish
176          its output
177        - fixed some minor memory leaks
178        - reenabled assembly features support, at the moment only for
179          enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
180        - minor assembly fix in x86 features detection (don't use the PIC
181          register, to avoid relocations in the text segment at runtime)
182        - POSIX callback functions of Thread.h are hidden
183    
184      * MIDI driver:
185        - dispatch bank select (MSB and LSB) messages
186    
187      * audio driver:
188        - the ALSA audio output driver parameters now reflect the correct
189          parameter value ranges for the respective selected sound card
190          (patch by Till Wimmer, a bit fixed and extended)
191    
192      * Gigasampler format engine:
193        - if a filter is used and EG2 finishes before EG1, let the voice
194          die when EG2 has finished (this fixes a problem with clicks and
195          voice starvation for some gigs)
196        - playback is no longer disabled during instrument loading
197        - all notes playing on a channel that changes its instrument keep
198          playing with the old instrument until they get a note off
199          command
200        - EG fix: a release value of zero could cause noises or crash
201        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
202        - EG fine tuning: when attack is zero the EG starts at a level
203          above max sustain level, which means that there is a decay phase
204          even if sustain is 100%
205        - more EG fixes: the level could sometimes go below zero and cause
206          noises or crashes
207        - minor fix of EGDecay (patch by Toshi Nagata)
208        - fixed compiler error when --enable-override-filter-type was
209          supplied to the configure script (fixes #46)
210        - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
211          instead of a fix value
212        - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
213          127 (solo mode) only kill voices if the respective mode really
214          changed
215    
216      * LSCP server:
217        - fixed compile time error for old Bison versions
218          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
219        - parser now supports extended ASCII character set
220          (up to ASCII code 255, i.e. includes now umlauts and accents)
221        - filename arguments in LSCP commands now allow to use escape
222          sequences, that is directly literal as one of: \', \", \\, \n, \r,
223          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
224          code value like \xf2) (fixes bug #24)
225        - the following LSCP commands now also support escape sequences for at
226          least one of their text-based parameters (i.e. name, description):
227          "ADD MIDI_INSTRUMENT_MAP", "MAP MIDI_INSTRUMENT",
228          "SET MIDI_INSTRUMENT_MAP NAME", "SET FX_SEND NAME", "CREATE FX_SEND",
229          "SET DB_INSTRUMENT_DIRECTORY NAME",
230          "SET DB_INSTRUMENT_DIRECTORY DESCRIPTION", "SET DB_INSTRUMENT NAME",
231          "SET DB_INSTRUMENT DESCRIPTION", "FIND DB_INSTRUMENTS",
232          "FIND DB_INSTRUMENT_DIRECTORIES"
233        - returns verbose syntax errors (line and column where syntax error
234          occured, the unexpected character and the actually expected, possible
235          character(s), the latter only if less than 5 possibilities)
236        - made sure that LSCP syntax is not affected by gigedit locale
237          settings
238        - bugfix regarding strings parameter lists: all comma separated lists
239          of strings were treated as being one string containing commas
240          (fixes #57)
241    
242      * Bug fixes:
243        - fixed crash occurring on certain LSCP scripts (Bug 39)
244        - another thread safety fix for lscp "load engine" and "set
245          channel audio output device"
246        - fixed a crash which occurs when reassigning the same engine
247          on a sampler channel with connected MIDI device
248        - fixed a crash which occurs when changing the number of ports of a MIDI
249          device connected to a sampler channel to number less then or equal
250          to the index of the port to which the sampler channel is connected.
251        - The previous bindings were not been disconnected when altering
252          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
253          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
254        - The active stream/voice count statistic was incorrect.
255        - notification events were not been sent for some sampler
256          channel changes
257        - added default min and max values to restrict the number of allowed
258          audio output channels and MIDI input ports
259        - the connection to the PCM interface is now closed when destroying
260          an audio output device
261        - files with slash in their path or filename could not be loaded
262    
263      * test cases:
264        - updated and fixed (haven't been touched in a while)
265    
266    Version 0.4.0 (24 November 2006)
267    
268      * packaging changes:
269        - changed deprecated copyright attribute to license; added ldconfig
270          to post-(un)install steps; added devel package for liblinuxsampler;
271          to linuxsampler.spec (RPM)
272        - install necessary development header files for allowing 3rd party
273          applications to link against liblinuxsampler
274        - liblinuxsampler's API documentation can be generated with 'make docs'
275          (Doxygen required)
276        - added benchmark to automatically detect the best triangle LFO
277          implementation (currently either an integer math solution or a
278          di-harmonic approximation), automatic detection can be overriden
279          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
280          configure script argument though (mandatory for cross-compilation)
281        - do not automatically pick optimized gcc flags if the user already
282          provided some on his own (as CXXFLAGS)
283        - added compile time option to disable processing of All-Notes-Off MIDI
284          messages
285        - added compile time options to allow disabling the various audio and
286          MIDI drivers
287        - fixed automatic GCC CPU switch detection on PPC
288          (patch by Ebrahim Mayat)
289    
290      * Gigasampler format engine:
291        - extensive synthesis optimization
292          (reimplementation of EGs and LFO(s), removed synthesis parameter
293          prerendering and the synthesis parameter matrix in general, splitting
294          each audio fragment into subfragments now where each subfragment uses
295          constant pitch and filter coefficients. The volume coefficient is
296          linearly interpolated inside a subfragment, unless
297          --disable-interpolate-volume is set.)
298        - fine tuning of the EG modulation parameters
299        - improved filter cutoff calculation by adding support for the
300          following gig parameters: Cutoff freq (used when no cutoff
301          controller is defined), Control invert, Minimum cutoff, Velocity
302          curve and Velocity range. The keyboard tracking now scales
303          cutoff frequency instead of resonance.
304        - added support for gig parameter Resonance.
305        - fixed bug in sysex handling (patch by Juan Linietsky)
306        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
307          which can be overridden with --enable-global-attenuation
308        - EG fixes: made the length of "attack hold" stage more
309          accurate. Release stage can now start before attack stage
310          ends. Cancel release didn't work when sustain was zero. Attack
311          time now has a minimal value to prevent clicks.
312        - fixed pitch changes larger than one octave
313        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
314        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
315          all modes can be altered via standard GM messages, that is CC5 for
316          altering portamento time, CC65 for enabling / disabling portamento
317          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
318        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
319          parameter) and crossfade
320        - added support for the "attenuation controller threshold" gig
321          parameter
322        - added smoothing of volume changes caused by control change
323          messages
324        - sample loop parameters are now taken from the DimensionRegion
325          instead of the wave chunk
326        - fixed keyswitching for v3 gigs with a number of keyswitch splits
327          not equal to a power of two
328        - reimplementation of the filter algorithm. The new filter is more
329          accurate and supports all gig filter types, including bandreject
330          and lowpass turbo.
331        - real support for 24 bit samples - samples are not truncated to
332          16 bits anymore
333        - support for aftertouch (channel pressure, not polyphonic
334          aftertouch)
335        - LFO1 behaviour fixed (dampening from max volume instead of
336          amplifying from 0)
337    
338      * LSCP server:
339        - fixed application exit on broken pipe error (fixes bug #20)
340        - fixed the notification messages delay due to lack of
341          network activity (fixes bug #26)
342        - fixed parser bug which occured on space(s) within device parameters
343          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
344    
345      * audio driver:
346        - added aRts audio output driver (by no means RT safe)
347    
348      * MIDI driver:
349        - fixed legacy sysex code which caused dispatching of MIDI SysEx
350          messages several times instead of once
351        - API extension for MIDI drivers which already supply exact time stamps
352          for events (i.e. for offline rendering based MIDI drivers)
353        - added checks for bad MIDI data
354    
355      * linuxsampler application:
356        - show available sampler engine types on startup
357    
358      * general changes:
359        - support for muting sampler channels and solo mode of the same, two new
360          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
361          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
362          introduced for this, the behavior is the same like on a mixer console
363          (patch by Grigor Iliev, a bit adjusted). Also added configure option
364          --enable-process-muted-channels which can be used to enable the
365          processing of muted channels.
366        - support for sostenuto pedal
367        - support for monitoring the total number of active voices
368          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
369          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
370        - fixed some memory management errors
371        - fixed some concurrency problems that could lead to crashes when
372          LSCP commands were executed
373        - fixed crash when instrument loading failed previously on the same
374          sampler channel (fixes bug #36)
375    
376    Version 0.3.3 (15 July 2005)
377    
378      * packaging changes:
379        - fixed compilation with gcc 4.0
380    
381      * Gigasampler format engine:
382        - LFO preprocessing was performed even though the respective LFO was
383          disabled by the instrument patch (minor efficiency fix)
384        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
385          for volume ramp downs in the same fragment (needed for current voice
386          stealing implementation) then simply inform the user with a warning
387          about possible click sounds and reduce the volume ramp down
388          appropriately instead of cancelling the audio device connection
389    
390    Version 0.3.2 (24 June 2005)
391    
392      * packaging changes:
393      - updated autotools build files to compile on OS X      - updated autotools build files to compile on OS X
394        (conditional compilation of CoreMIDI and MidiShare drivers)        (conditional compilation of CoreMIDI and MidiShare drivers)
395      - hand-crafted assembly optimization code can be disabled with      - hand-crafted assembly optimization code can be disabled with
396        './configure --disable-asm' (definitely not recommended)        './configure --disable-asm' (definitely not recommended)
397    * support for the gig parameters for "release velocity response"      - fixed 'make dist' rule to include all necessary files
398      curves      - require automake (>= 1.5) for 'make -f Makefile.cvs'
399    * fine tuning of the EGADSR envelope        (due to 'dist-bzip2' automake option)
400    
401      * Gigasampler format engine:
402        - support for the gig parameters for "release velocity response" curves
403        - fine tuning of the EGADSR envelope
404        - volume of release triggered samples now depends on note-on velocity,
405          note length and gig parameter "release trigger decay" instead of
406          note-off velocity.
407        - revised voice stealing
408          (fixes crash and endless loop caused by voice stealing)
409        - don't reset scale tuning on instrument or audio output device change
410        - handle key group conflicts right at the beginning of each fragment
411          instead of when the respective voice is actually launched
412          (fixes undefined behavior if stolen voices belonged to a key group -
413          this case was followed by a "killed voice survived" error message)
414        - fixed minor issue with null/silence samples
415          (those stole voices even though they don't need a voice at all which
416          resulted in "voice stealing didn't work out" messages)
417        - don't reset volume, pan, pitch and MIDI controller values on
418          instrument or audio output device change
419    
420    * LSCP server:    * LSCP server:
421      - fixed some crashs (patch by Grigor Iliev, fixes #19)      - fixed some crashes (patch by Grigor Iliev, fixes #19)
422        - fixed LSCP event "CHANNEL_INFO" notification
423          (e.g. did not notify on volume changes or MIDI program change events)
424    
425      * linuxsampler application:
426        - added command line parameters --lscp-addr and --lscp-port to override
427          default IP address and port of LSCP server
428    
429  Version 0.3.1 (24 May 2005)  Version 0.3.1 (24 May 2005)
430    

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