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revision 579 by schoenebeck, Tue May 24 19:20:20 2005 UTC revision 1687 by schoenebeck, Thu Feb 14 14:59:30 2008 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    
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    
54    Version 0.5.1 (6 December 2007)
55    
56      * packaging changes:
57        - added autoconf checks for pthread library
58        - added autoconf check for pthread bug found on certain NPTL-enabled
59          glibc versions (see Gentoo bug report #194076)
60        - added autoconf checks for MS Windows
61    
62      * general changes:
63        - bugfix: the thread used by an editor plugin didn't die when the
64          editor closed
65        - bugfix: Ringbuffer.h: fill_write_space_with_null() did not zero
66          out all the space. operator--() did not apply size_mask after
67          decrementing the read_ptr. DEFAULT_WRAP_ELEMENTS set to 0 in
68          order to avoid problems with the _NonVolatileReader functions.
69        - bugfix: Stream.h: added a missing divide by BytesPerSample in
70          GetWriteSpace(). Since this function is currently only used in
71          the stream's qsort() compare function, it didn't trigger any
72          bugs.
73        - Resampler.h, Synthesizer.h: cubic interpolation now works in
74          24bit mode too. Faster method to read 24bit words on little
75          endian machines (x86): replaced 3 byte reads + shifts with a 1
76          unaligned 32bit read and shift
77        - experimental support for MS Windows (MIDI input via MME, AUDIO
78          output via ASIO)
79        - made handling of SIGINT signal (Ctrl-C) a bit more robust
80        - support for monitoring the total number of active disk streams
81          (new LSCP commands: GET TOTAL_STREAM_COUNT,
82          SUBSCRIBE TOTAL_STREAM_COUNT, UNSUBSCRIBE TOTAL_STREAM_COUNT)
83    
84      * AUDIO driver:
85        - added Windows ASIO low latency audio driver
86    
87      * MIDI driver:
88        - added MME Windows MIDI driver
89    
90      * LSCP server:
91        - added support for Windows style path / filenames, however with
92          forward slash path separators instead of backslash
93          (i.e. "C:/foo/bar.gig")
94        - allow naughty liblscp to send non-string device parameters within
95          apostrophes as well
96        - added new LSCP commands: "GET FILE INSTRUMENTS <file>",
97          "LIST FILE INSTRUMENTS <file>" and
98          "GET FILE INSTRUMENT INFO <file> <index>" for retrieving informations
99          about an arbitrary instrument file on the system where the sampler is
100          running on
101    
102    Version 0.5.0 (15 October 2007)
103    
104      * packaging changes:
105        - config.h is not going to be installed along with liblinuxsampler's
106          API header files anymore
107        - only the API relevant header (and source) files will be exported to
108          the Doxygen API documentation (explicitly listed in Doxyfile.in)
109        - added completely new XCode project files for Mac OSX which is now
110          capable to execute our autoconf environment, thus no need anymore
111          to maintain the compile time configuration file (osx/version.h) for
112          OSX manually (patch by Toshi Nagata)
113        - fixed buggy boolean --enable-foo / --disable-foo configure script
114          parameters
115        - global.h now only covers global definitions that are needed for the
116          C++ API header files, all implementation internal global definitions
117          are now in global_private.h
118        - atomic.h is not exposed to the C++ API anymore
119        - no need to include config.h anymore for using LS's API header files
120        - fixed warnings in API doc generation
121    
122      * general changes:
123        - replaced the old, confusing MIDI program change mechanism by a
124          flexible MIDI instrument mapper which allows to map arbitrary
125          (MIDI bank, MIDI program) pairs with arbitrary
126          (engine type, instrument file, file index) triplets which will be
127          loaded on the respective channel when such MIDI program change
128          messages arrive, beside that, each entry allows to define a life-time
129          strategy for the instrument, so the user can define whether the
130          instrument should i.e. be permanently loaded (to be able to switch
131          quickly among sounds) or i.e. loaded just on demand when the
132          respective program change arrives (to safe RAM space), as well as a
133          global volume factor for each entry, so the user can adjust the volume
134          dynamic of his mapped instrument collection without having to modify
135          the instrument files, also one can manage arbitrary amount of such
136          MIDI instrument maps and assign each sampler channel individually
137          a certain map, so that i.e. separation of normal instruments and
138          drumkits is possible
139        - new notification events for tracking changes to audio/MIDI devices,
140          MIDI instrument maps, MIDI instruments, FX sends, global volume.
141        - sampler was limited to load max. 200 instruments in the background
142          due to a constant size RingBuffer FIFO which is now replaced by a
143          dynamic (unlimited) size std::list FIFO
144        - added FX sends, these allow to route audio signals to arbitrary audio
145          output channels for being processed by external effect processors
146          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
147          controllers
148        - global (sampler wide) volume can now be controlled at runtime
149        - Implemented new, improved notification system
150        - fixed compilation errors regarding OSX
151          (patch by Toshi Nagata)
152        - implemented instruments database
153        - added support for escape sequences to the instruments database
154        - added highly experimental support for on-the-fly instrument editing
155          within the sampler's process (by using instrument editor plugins),
156          you'll notice the new "Registered instrument editors:" message on
157          startup, added a new LSCP command:
158          "EDIT CHANNEL INSTRUMENT <sampler-channel>"
159          to spawn a matching instrument editor for the instrument on the
160          given sampler channel, the plugin path can be overridden at compile
161          time with ./configure --enable-plugin-dir=/some/dir
162        - added experimental code for synchronizing instrument editors hosted
163          in the sampler's process to safely edit instruments while playing
164          without a crash (hopefully) by either suspending single regions
165          wherever possible or if unavoidable whole engine(s)
166        - fixed several issues in fundamental "Thread" class: set scheduling
167          policy and priority on thread level, set a minimum stack size for
168          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
169          threads simply inherited properties of starting thread instead of
170          setting their own policy and priority
171        - minor fix in our automatic stack trace mechanism on crashes, the
172          main process did not wait for the stack trace process to finish
173          its output
174        - fixed some minor memory leaks
175        - reenabled assembly features support, at the moment only for
176          enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
177        - minor assembly fix in x86 features detection (don't use the PIC
178          register, to avoid relocations in the text segment at runtime)
179        - POSIX callback functions of Thread.h are hidden
180    
181      * MIDI driver:
182        - dispatch bank select (MSB and LSB) messages
183    
184      * audio driver:
185        - the ALSA audio output driver parameters now reflect the correct
186          parameter value ranges for the respective selected sound card
187          (patch by Till Wimmer, a bit fixed and extended)
188    
189      * Gigasampler format engine:
190        - if a filter is used and EG2 finishes before EG1, let the voice
191          die when EG2 has finished (this fixes a problem with clicks and
192          voice starvation for some gigs)
193        - playback is no longer disabled during instrument loading
194        - all notes playing on a channel that changes its instrument keep
195          playing with the old instrument until they get a note off
196          command
197        - EG fix: a release value of zero could cause noises or crash
198        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
199        - EG fine tuning: when attack is zero the EG starts at a level
200          above max sustain level, which means that there is a decay phase
201          even if sustain is 100%
202        - more EG fixes: the level could sometimes go below zero and cause
203          noises or crashes
204        - minor fix of EGDecay (patch by Toshi Nagata)
205        - fixed compiler error when --enable-override-filter-type was
206          supplied to the configure script (fixes #46)
207        - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
208          instead of a fix value
209        - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
210          127 (solo mode) only kill voices if the respective mode really
211          changed
212    
213      * LSCP server:
214        - fixed compile time error for old Bison versions
215          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
216        - parser now supports extended ASCII character set
217          (up to ASCII code 255, i.e. includes now umlauts and accents)
218        - filename arguments in LSCP commands now allow to use escape
219          sequences, that is directly literal as one of: \', \", \\, \n, \r,
220          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
221          code value like \xf2) (fixes bug #24)
222        - the following LSCP commands now also support escape sequences for at
223          least one of their text-based parameters (i.e. name, description):
224          "ADD MIDI_INSTRUMENT_MAP", "MAP MIDI_INSTRUMENT",
225          "SET MIDI_INSTRUMENT_MAP NAME", "SET FX_SEND NAME", "CREATE FX_SEND",
226          "SET DB_INSTRUMENT_DIRECTORY NAME",
227          "SET DB_INSTRUMENT_DIRECTORY DESCRIPTION", "SET DB_INSTRUMENT NAME",
228          "SET DB_INSTRUMENT DESCRIPTION", "FIND DB_INSTRUMENTS",
229          "FIND DB_INSTRUMENT_DIRECTORIES"
230        - returns verbose syntax errors (line and column where syntax error
231          occured, the unexpected character and the actually expected, possible
232          character(s), the latter only if less than 5 possibilities)
233        - made sure that LSCP syntax is not affected by gigedit locale
234          settings
235        - bugfix regarding strings parameter lists: all comma separated lists
236          of strings were treated as being one string containing commas
237          (fixes #57)
238    
239      * Bug fixes:
240        - fixed crash occurring on certain LSCP scripts (Bug 39)
241        - another thread safety fix for lscp "load engine" and "set
242          channel audio output device"
243        - fixed a crash which occurs when reassigning the same engine
244          on a sampler channel with connected MIDI device
245        - fixed a crash which occurs when changing the number of ports of a MIDI
246          device connected to a sampler channel to number less then or equal
247          to the index of the port to which the sampler channel is connected.
248        - The previous bindings were not been disconnected when altering
249          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
250          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
251        - The active stream/voice count statistic was incorrect.
252        - notification events were not been sent for some sampler
253          channel changes
254        - added default min and max values to restrict the number of allowed
255          audio output channels and MIDI input ports
256        - the connection to the PCM interface is now closed when destroying
257          an audio output device
258        - files with slash in their path or filename could not be loaded
259    
260      * test cases:
261        - updated and fixed (haven't been touched in a while)
262    
263    Version 0.4.0 (24 November 2006)
264    
265      * packaging changes:
266        - changed deprecated copyright attribute to license; added ldconfig
267          to post-(un)install steps; added devel package for liblinuxsampler;
268          to linuxsampler.spec (RPM)
269        - install necessary development header files for allowing 3rd party
270          applications to link against liblinuxsampler
271        - liblinuxsampler's API documentation can be generated with 'make docs'
272          (Doxygen required)
273        - added benchmark to automatically detect the best triangle LFO
274          implementation (currently either an integer math solution or a
275          di-harmonic approximation), automatic detection can be overriden
276          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
277          configure script argument though (mandatory for cross-compilation)
278        - do not automatically pick optimized gcc flags if the user already
279          provided some on his own (as CXXFLAGS)
280        - added compile time option to disable processing of All-Notes-Off MIDI
281          messages
282        - added compile time options to allow disabling the various audio and
283          MIDI drivers
284        - fixed automatic GCC CPU switch detection on PPC
285          (patch by Ebrahim Mayat)
286    
287      * Gigasampler format engine:
288        - extensive synthesis optimization
289          (reimplementation of EGs and LFO(s), removed synthesis parameter
290          prerendering and the synthesis parameter matrix in general, splitting
291          each audio fragment into subfragments now where each subfragment uses
292          constant pitch and filter coefficients. The volume coefficient is
293          linearly interpolated inside a subfragment, unless
294          --disable-interpolate-volume is set.)
295        - fine tuning of the EG modulation parameters
296        - improved filter cutoff calculation by adding support for the
297          following gig parameters: Cutoff freq (used when no cutoff
298          controller is defined), Control invert, Minimum cutoff, Velocity
299          curve and Velocity range. The keyboard tracking now scales
300          cutoff frequency instead of resonance.
301        - added support for gig parameter Resonance.
302        - fixed bug in sysex handling (patch by Juan Linietsky)
303        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
304          which can be overridden with --enable-global-attenuation
305        - EG fixes: made the length of "attack hold" stage more
306          accurate. Release stage can now start before attack stage
307          ends. Cancel release didn't work when sustain was zero. Attack
308          time now has a minimal value to prevent clicks.
309        - fixed pitch changes larger than one octave
310        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
311        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
312          all modes can be altered via standard GM messages, that is CC5 for
313          altering portamento time, CC65 for enabling / disabling portamento
314          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
315        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
316          parameter) and crossfade
317        - added support for the "attenuation controller threshold" gig
318          parameter
319        - added smoothing of volume changes caused by control change
320          messages
321        - sample loop parameters are now taken from the DimensionRegion
322          instead of the wave chunk
323        - fixed keyswitching for v3 gigs with a number of keyswitch splits
324          not equal to a power of two
325        - reimplementation of the filter algorithm. The new filter is more
326          accurate and supports all gig filter types, including bandreject
327          and lowpass turbo.
328        - real support for 24 bit samples - samples are not truncated to
329          16 bits anymore
330        - support for aftertouch (channel pressure, not polyphonic
331          aftertouch)
332        - LFO1 behaviour fixed (dampening from max volume instead of
333          amplifying from 0)
334    
335      * LSCP server:
336        - fixed application exit on broken pipe error (fixes bug #20)
337        - fixed the notification messages delay due to lack of
338          network activity (fixes bug #26)
339        - fixed parser bug which occured on space(s) within device parameters
340          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
341    
342      * audio driver:
343        - added aRts audio output driver (by no means RT safe)
344    
345      * MIDI driver:
346        - fixed legacy sysex code which caused dispatching of MIDI SysEx
347          messages several times instead of once
348        - API extension for MIDI drivers which already supply exact time stamps
349          for events (i.e. for offline rendering based MIDI drivers)
350        - added checks for bad MIDI data
351    
352      * linuxsampler application:
353        - show available sampler engine types on startup
354    
355      * general changes:
356        - support for muting sampler channels and solo mode of the same, two new
357          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
358          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
359          introduced for this, the behavior is the same like on a mixer console
360          (patch by Grigor Iliev, a bit adjusted). Also added configure option
361          --enable-process-muted-channels which can be used to enable the
362          processing of muted channels.
363        - support for sostenuto pedal
364        - support for monitoring the total number of active voices
365          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
366          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
367        - fixed some memory management errors
368        - fixed some concurrency problems that could lead to crashes when
369          LSCP commands were executed
370        - fixed crash when instrument loading failed previously on the same
371          sampler channel (fixes bug #36)
372    
373    Version 0.3.3 (15 July 2005)
374    
375      * packaging changes:
376        - fixed compilation with gcc 4.0
377    
378      * Gigasampler format engine:
379        - LFO preprocessing was performed even though the respective LFO was
380          disabled by the instrument patch (minor efficiency fix)
381        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
382          for volume ramp downs in the same fragment (needed for current voice
383          stealing implementation) then simply inform the user with a warning
384          about possible click sounds and reduce the volume ramp down
385          appropriately instead of cancelling the audio device connection
386    
387    Version 0.3.2 (24 June 2005)
388    
389      * packaging changes:
390        - updated autotools build files to compile on OS X
391          (conditional compilation of CoreMIDI and MidiShare drivers)
392        - hand-crafted assembly optimization code can be disabled with
393          './configure --disable-asm' (definitely not recommended)
394        - fixed 'make dist' rule to include all necessary files
395        - require automake (>= 1.5) for 'make -f Makefile.cvs'
396          (due to 'dist-bzip2' automake option)
397    
398      * Gigasampler format engine:
399        - support for the gig parameters for "release velocity response" curves
400        - fine tuning of the EGADSR envelope
401        - volume of release triggered samples now depends on note-on velocity,
402          note length and gig parameter "release trigger decay" instead of
403          note-off velocity.
404        - revised voice stealing
405          (fixes crash and endless loop caused by voice stealing)
406        - don't reset scale tuning on instrument or audio output device change
407        - handle key group conflicts right at the beginning of each fragment
408          instead of when the respective voice is actually launched
409          (fixes undefined behavior if stolen voices belonged to a key group -
410          this case was followed by a "killed voice survived" error message)
411        - fixed minor issue with null/silence samples
412          (those stole voices even though they don't need a voice at all which
413          resulted in "voice stealing didn't work out" messages)
414        - don't reset volume, pan, pitch and MIDI controller values on
415          instrument or audio output device change
416    
417      * LSCP server:
418        - fixed some crashes (patch by Grigor Iliev, fixes #19)
419        - fixed LSCP event "CHANNEL_INFO" notification
420          (e.g. did not notify on volume changes or MIDI program change events)
421    
422      * linuxsampler application:
423        - added command line parameters --lscp-addr and --lscp-port to override
424          default IP address and port of LSCP server
425    
426  Version 0.3.1 (24 May 2005)  Version 0.3.1 (24 May 2005)
427    
428    * initial release    * initial release

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