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revision 688 by schoenebeck, Thu Jul 14 12:25:20 2005 UTC revision 1713 by persson, Thu Mar 6 20:42:22 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    
28      * audio driver:
29        - removed the nonsense audio channel constraint (which was hard coded to
30          max. 100 audio channels) for most audio drivers
31        - JACK audio driver did not offer a device parameter "SAMPLERATE" as
32          opposed to the LSCP specs
33        - bugfix: the SAMPLERATE parameter of some drivers (e.g. JACK)
34          reflected the wrong value
35        - fixed a memory management bug in ASIO driver
36    
37      * MIDI driver:
38        - added JACK MIDI driver
39    
40      * instruments database:
41        - avoid time consuming samples scanning when adding instruments
42          to the instruments database
43    
44      * Gigasampler format engine:
45        - fixed a memory leak that could happen when a channel was deleted
46          while notes were playing
47        - made it possible to load an instrument even if the audio thread
48          isn't running
49        - added partial support for the "Controller Triggered" MIDI rule,
50          enough for piano gigs with pedal noise samples
51    
52      * LSCP server:
53        - added new LSCP event "CHANNEL_MIDI" which can be used by frontends to
54          react on MIDI data arriving on certain sampler channels (so far only
55          Note-On and Note-Off events are sent via this LSCP event)
56        - added new LSCP event "DEVICE_MIDI" which can be used by frontends to
57          react on MIDI data arriving on certain MIDI input devices (so far only
58          Note-On and Note-Off events are sent via this LSCP event)
59    
60    Version 0.5.1 (6 December 2007)
61    
62      * packaging changes:
63        - added autoconf checks for pthread library
64        - added autoconf check for pthread bug found on certain NPTL-enabled
65          glibc versions (see Gentoo bug report #194076)
66        - added autoconf checks for MS Windows
67    
68      * general changes:
69        - bugfix: the thread used by an editor plugin didn't die when the
70          editor closed
71        - bugfix: Ringbuffer.h: fill_write_space_with_null() did not zero
72          out all the space. operator--() did not apply size_mask after
73          decrementing the read_ptr. DEFAULT_WRAP_ELEMENTS set to 0 in
74          order to avoid problems with the _NonVolatileReader functions.
75        - bugfix: Stream.h: added a missing divide by BytesPerSample in
76          GetWriteSpace(). Since this function is currently only used in
77          the stream's qsort() compare function, it didn't trigger any
78          bugs.
79        - Resampler.h, Synthesizer.h: cubic interpolation now works in
80          24bit mode too. Faster method to read 24bit words on little
81          endian machines (x86): replaced 3 byte reads + shifts with a 1
82          unaligned 32bit read and shift
83        - experimental support for MS Windows (MIDI input via MME, AUDIO
84          output via ASIO)
85        - made handling of SIGINT signal (Ctrl-C) a bit more robust
86        - support for monitoring the total number of active disk streams
87          (new LSCP commands: GET TOTAL_STREAM_COUNT,
88          SUBSCRIBE TOTAL_STREAM_COUNT, UNSUBSCRIBE TOTAL_STREAM_COUNT)
89    
90      * AUDIO driver:
91        - added Windows ASIO low latency audio driver
92    
93      * MIDI driver:
94        - added MME Windows MIDI driver
95    
96      * LSCP server:
97        - added support for Windows style path / filenames, however with
98          forward slash path separators instead of backslash
99          (i.e. "C:/foo/bar.gig")
100        - allow naughty liblscp to send non-string device parameters within
101          apostrophes as well
102        - added new LSCP commands: "GET FILE INSTRUMENTS <file>",
103          "LIST FILE INSTRUMENTS <file>" and
104          "GET FILE INSTRUMENT INFO <file> <index>" for retrieving informations
105          about an arbitrary instrument file on the system where the sampler is
106          running on
107    
108    Version 0.5.0 (15 October 2007)
109    
110      * packaging changes:
111        - config.h is not going to be installed along with liblinuxsampler's
112          API header files anymore
113        - only the API relevant header (and source) files will be exported to
114          the Doxygen API documentation (explicitly listed in Doxyfile.in)
115        - added completely new XCode project files for Mac OSX which is now
116          capable to execute our autoconf environment, thus no need anymore
117          to maintain the compile time configuration file (osx/version.h) for
118          OSX manually (patch by Toshi Nagata)
119        - fixed buggy boolean --enable-foo / --disable-foo configure script
120          parameters
121        - global.h now only covers global definitions that are needed for the
122          C++ API header files, all implementation internal global definitions
123          are now in global_private.h
124        - atomic.h is not exposed to the C++ API anymore
125        - no need to include config.h anymore for using LS's API header files
126        - fixed warnings in API doc generation
127    
128      * general changes:
129        - replaced the old, confusing MIDI program change mechanism by a
130          flexible MIDI instrument mapper which allows to map arbitrary
131          (MIDI bank, MIDI program) pairs with arbitrary
132          (engine type, instrument file, file index) triplets which will be
133          loaded on the respective channel when such MIDI program change
134          messages arrive, beside that, each entry allows to define a life-time
135          strategy for the instrument, so the user can define whether the
136          instrument should i.e. be permanently loaded (to be able to switch
137          quickly among sounds) or i.e. loaded just on demand when the
138          respective program change arrives (to safe RAM space), as well as a
139          global volume factor for each entry, so the user can adjust the volume
140          dynamic of his mapped instrument collection without having to modify
141          the instrument files, also one can manage arbitrary amount of such
142          MIDI instrument maps and assign each sampler channel individually
143          a certain map, so that i.e. separation of normal instruments and
144          drumkits is possible
145        - new notification events for tracking changes to audio/MIDI devices,
146          MIDI instrument maps, MIDI instruments, FX sends, global volume.
147        - sampler was limited to load max. 200 instruments in the background
148          due to a constant size RingBuffer FIFO which is now replaced by a
149          dynamic (unlimited) size std::list FIFO
150        - added FX sends, these allow to route audio signals to arbitrary audio
151          output channels for being processed by external effect processors
152          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
153          controllers
154        - global (sampler wide) volume can now be controlled at runtime
155        - Implemented new, improved notification system
156        - fixed compilation errors regarding OSX
157          (patch by Toshi Nagata)
158        - implemented instruments database
159        - added support for escape sequences to the instruments database
160        - added highly experimental support for on-the-fly instrument editing
161          within the sampler's process (by using instrument editor plugins),
162          you'll notice the new "Registered instrument editors:" message on
163          startup, added a new LSCP command:
164          "EDIT CHANNEL INSTRUMENT <sampler-channel>"
165          to spawn a matching instrument editor for the instrument on the
166          given sampler channel, the plugin path can be overridden at compile
167          time with ./configure --enable-plugin-dir=/some/dir
168        - added experimental code for synchronizing instrument editors hosted
169          in the sampler's process to safely edit instruments while playing
170          without a crash (hopefully) by either suspending single regions
171          wherever possible or if unavoidable whole engine(s)
172        - fixed several issues in fundamental "Thread" class: set scheduling
173          policy and priority on thread level, set a minimum stack size for
174          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
175          threads simply inherited properties of starting thread instead of
176          setting their own policy and priority
177        - minor fix in our automatic stack trace mechanism on crashes, the
178          main process did not wait for the stack trace process to finish
179          its output
180        - fixed some minor memory leaks
181        - reenabled assembly features support, at the moment only for
182          enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
183        - minor assembly fix in x86 features detection (don't use the PIC
184          register, to avoid relocations in the text segment at runtime)
185        - POSIX callback functions of Thread.h are hidden
186    
187      * MIDI driver:
188        - dispatch bank select (MSB and LSB) messages
189    
190      * audio driver:
191        - the ALSA audio output driver parameters now reflect the correct
192          parameter value ranges for the respective selected sound card
193          (patch by Till Wimmer, a bit fixed and extended)
194    
195      * Gigasampler format engine:
196        - if a filter is used and EG2 finishes before EG1, let the voice
197          die when EG2 has finished (this fixes a problem with clicks and
198          voice starvation for some gigs)
199        - playback is no longer disabled during instrument loading
200        - all notes playing on a channel that changes its instrument keep
201          playing with the old instrument until they get a note off
202          command
203        - EG fix: a release value of zero could cause noises or crash
204        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
205        - EG fine tuning: when attack is zero the EG starts at a level
206          above max sustain level, which means that there is a decay phase
207          even if sustain is 100%
208        - more EG fixes: the level could sometimes go below zero and cause
209          noises or crashes
210        - minor fix of EGDecay (patch by Toshi Nagata)
211        - fixed compiler error when --enable-override-filter-type was
212          supplied to the configure script (fixes #46)
213        - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
214          instead of a fix value
215        - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
216          127 (solo mode) only kill voices if the respective mode really
217          changed
218    
219      * LSCP server:
220        - fixed compile time error for old Bison versions
221          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
222        - parser now supports extended ASCII character set
223          (up to ASCII code 255, i.e. includes now umlauts and accents)
224        - filename arguments in LSCP commands now allow to use escape
225          sequences, that is directly literal as one of: \', \", \\, \n, \r,
226          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
227          code value like \xf2) (fixes bug #24)
228        - the following LSCP commands now also support escape sequences for at
229          least one of their text-based parameters (i.e. name, description):
230          "ADD MIDI_INSTRUMENT_MAP", "MAP MIDI_INSTRUMENT",
231          "SET MIDI_INSTRUMENT_MAP NAME", "SET FX_SEND NAME", "CREATE FX_SEND",
232          "SET DB_INSTRUMENT_DIRECTORY NAME",
233          "SET DB_INSTRUMENT_DIRECTORY DESCRIPTION", "SET DB_INSTRUMENT NAME",
234          "SET DB_INSTRUMENT DESCRIPTION", "FIND DB_INSTRUMENTS",
235          "FIND DB_INSTRUMENT_DIRECTORIES"
236        - returns verbose syntax errors (line and column where syntax error
237          occured, the unexpected character and the actually expected, possible
238          character(s), the latter only if less than 5 possibilities)
239        - made sure that LSCP syntax is not affected by gigedit locale
240          settings
241        - bugfix regarding strings parameter lists: all comma separated lists
242          of strings were treated as being one string containing commas
243          (fixes #57)
244    
245      * Bug fixes:
246        - fixed crash occurring on certain LSCP scripts (Bug 39)
247        - another thread safety fix for lscp "load engine" and "set
248          channel audio output device"
249        - fixed a crash which occurs when reassigning the same engine
250          on a sampler channel with connected MIDI device
251        - fixed a crash which occurs when changing the number of ports of a MIDI
252          device connected to a sampler channel to number less then or equal
253          to the index of the port to which the sampler channel is connected.
254        - The previous bindings were not been disconnected when altering
255          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
256          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
257        - The active stream/voice count statistic was incorrect.
258        - notification events were not been sent for some sampler
259          channel changes
260        - added default min and max values to restrict the number of allowed
261          audio output channels and MIDI input ports
262        - the connection to the PCM interface is now closed when destroying
263          an audio output device
264        - files with slash in their path or filename could not be loaded
265    
266      * test cases:
267        - updated and fixed (haven't been touched in a while)
268    
269    Version 0.4.0 (24 November 2006)
270    
271      * packaging changes:
272        - changed deprecated copyright attribute to license; added ldconfig
273          to post-(un)install steps; added devel package for liblinuxsampler;
274          to linuxsampler.spec (RPM)
275        - install necessary development header files for allowing 3rd party
276          applications to link against liblinuxsampler
277        - liblinuxsampler's API documentation can be generated with 'make docs'
278          (Doxygen required)
279        - added benchmark to automatically detect the best triangle LFO
280          implementation (currently either an integer math solution or a
281          di-harmonic approximation), automatic detection can be overriden
282          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
283          configure script argument though (mandatory for cross-compilation)
284        - do not automatically pick optimized gcc flags if the user already
285          provided some on his own (as CXXFLAGS)
286        - added compile time option to disable processing of All-Notes-Off MIDI
287          messages
288        - added compile time options to allow disabling the various audio and
289          MIDI drivers
290        - fixed automatic GCC CPU switch detection on PPC
291          (patch by Ebrahim Mayat)
292    
293      * Gigasampler format engine:
294        - extensive synthesis optimization
295          (reimplementation of EGs and LFO(s), removed synthesis parameter
296          prerendering and the synthesis parameter matrix in general, splitting
297          each audio fragment into subfragments now where each subfragment uses
298          constant pitch and filter coefficients. The volume coefficient is
299          linearly interpolated inside a subfragment, unless
300          --disable-interpolate-volume is set.)
301        - fine tuning of the EG modulation parameters
302        - improved filter cutoff calculation by adding support for the
303          following gig parameters: Cutoff freq (used when no cutoff
304          controller is defined), Control invert, Minimum cutoff, Velocity
305          curve and Velocity range. The keyboard tracking now scales
306          cutoff frequency instead of resonance.
307        - added support for gig parameter Resonance.
308        - fixed bug in sysex handling (patch by Juan Linietsky)
309        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
310          which can be overridden with --enable-global-attenuation
311        - EG fixes: made the length of "attack hold" stage more
312          accurate. Release stage can now start before attack stage
313          ends. Cancel release didn't work when sustain was zero. Attack
314          time now has a minimal value to prevent clicks.
315        - fixed pitch changes larger than one octave
316        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
317        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
318          all modes can be altered via standard GM messages, that is CC5 for
319          altering portamento time, CC65 for enabling / disabling portamento
320          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
321        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
322          parameter) and crossfade
323        - added support for the "attenuation controller threshold" gig
324          parameter
325        - added smoothing of volume changes caused by control change
326          messages
327        - sample loop parameters are now taken from the DimensionRegion
328          instead of the wave chunk
329        - fixed keyswitching for v3 gigs with a number of keyswitch splits
330          not equal to a power of two
331        - reimplementation of the filter algorithm. The new filter is more
332          accurate and supports all gig filter types, including bandreject
333          and lowpass turbo.
334        - real support for 24 bit samples - samples are not truncated to
335          16 bits anymore
336        - support for aftertouch (channel pressure, not polyphonic
337          aftertouch)
338        - LFO1 behaviour fixed (dampening from max volume instead of
339          amplifying from 0)
340    
341      * LSCP server:
342        - fixed application exit on broken pipe error (fixes bug #20)
343        - fixed the notification messages delay due to lack of
344          network activity (fixes bug #26)
345        - fixed parser bug which occured on space(s) within device parameters
346          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
347    
348      * audio driver:
349        - added aRts audio output driver (by no means RT safe)
350    
351      * MIDI driver:
352        - fixed legacy sysex code which caused dispatching of MIDI SysEx
353          messages several times instead of once
354        - API extension for MIDI drivers which already supply exact time stamps
355          for events (i.e. for offline rendering based MIDI drivers)
356        - added checks for bad MIDI data
357    
358      * linuxsampler application:
359        - show available sampler engine types on startup
360    
361      * general changes:
362        - support for muting sampler channels and solo mode of the same, two new
363          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
364          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
365          introduced for this, the behavior is the same like on a mixer console
366          (patch by Grigor Iliev, a bit adjusted). Also added configure option
367          --enable-process-muted-channels which can be used to enable the
368          processing of muted channels.
369        - support for sostenuto pedal
370        - support for monitoring the total number of active voices
371          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
372          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
373        - fixed some memory management errors
374        - fixed some concurrency problems that could lead to crashes when
375          LSCP commands were executed
376        - fixed crash when instrument loading failed previously on the same
377          sampler channel (fixes bug #36)
378    
379    Version 0.3.3 (15 July 2005)
380    
381      * packaging changes:
382      - fixed compilation with gcc 4.0      - fixed compilation with gcc 4.0
383    
384    * Gigasampler format engine:    * Gigasampler format engine:

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