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revision 620 by schoenebeck, Wed Jun 8 23:16:13 2005 UTC revision 1601 by schoenebeck, Sat Dec 29 20:27:53 2007 UTC
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1  Version CVS HEAD (?)  Version CVS HEAD (?)
2    
3      * general changes:
4        - bugfix: on some POSIX systems instrument editor plugins refused to
5          load as we used a non-portable Linux specific struct field
6          (fixes bug #70, patch by Ronald Baljeu)
7    
8      * audio driver:
9        - removed the nonsense audio channel constraint (which was hard coded to
10          max. 100 audio channels) for most audio drivers
11    
12    Version 0.5.1 (6 December 2007)
13    
14      * packaging changes:
15        - added autoconf checks for pthread library
16        - added autoconf check for pthread bug found on certain NPTL-enabled
17          glibc versions (see Gentoo bug report #194076)
18        - added autoconf checks for MS Windows
19    
20      * general changes:
21        - bugfix: the thread used by an editor plugin didn't die when the
22          editor closed
23        - bugfix: Ringbuffer.h: fill_write_space_with_null() did not zero
24          out all the space. operator--() did not apply size_mask after
25          decrementing the read_ptr. DEFAULT_WRAP_ELEMENTS set to 0 in
26          order to avoid problems with the _NonVolatileReader functions.
27        - bugfix: Stream.h: added a missing divide by BytesPerSample in
28          GetWriteSpace(). Since this function is currently only used in
29          the stream's qsort() compare function, it didn't trigger any
30          bugs.
31        - Resampler.h, Synthesizer.h: cubic interpolation now works in
32          24bit mode too. Faster method to read 24bit words on little
33          endian machines (x86): replaced 3 byte reads + shifts with a 1
34          unaligned 32bit read and shift
35        - experimental support for MS Windows (MIDI input via MME, AUDIO
36          output via ASIO)
37        - made handling of SIGINT signal (Ctrl-C) a bit more robust
38        - support for monitoring the total number of active disk streams
39          (new LSCP commands: GET TOTAL_STREAM_COUNT,
40          SUBSCRIBE TOTAL_STREAM_COUNT, UNSUBSCRIBE TOTAL_STREAM_COUNT)
41    
42      * AUDIO driver:
43        - added Windows ASIO low latency audio driver
44    
45      * MIDI driver:
46        - added MME Windows MIDI driver
47    
48      * LSCP server:
49        - added support for Windows style path / filenames, however with
50          forward slash path separators instead of backslash
51          (i.e. "C:/foo/bar.gig")
52        - allow naughty liblscp to send non-string device parameters within
53          apostrophes as well
54        - added new LSCP commands: "GET FILE INSTRUMENTS <file>",
55          "LIST FILE INSTRUMENTS <file>" and
56          "GET FILE INSTRUMENT INFO <file> <index>" for retrieving informations
57          about an arbitrary instrument file on the system where the sampler is
58          running on
59    
60    Version 0.5.0 (15 October 2007)
61    
62      * packaging changes:
63        - config.h is not going to be installed along with liblinuxsampler's
64          API header files anymore
65        - only the API relevant header (and source) files will be exported to
66          the Doxygen API documentation (explicitly listed in Doxyfile.in)
67        - added completely new XCode project files for Mac OSX which is now
68          capable to execute our autoconf environment, thus no need anymore
69          to maintain the compile time configuration file (osx/version.h) for
70          OSX manually (patch by Toshi Nagata)
71        - fixed buggy boolean --enable-foo / --disable-foo configure script
72          parameters
73        - global.h now only covers global definitions that are needed for the
74          C++ API header files, all implementation internal global definitions
75          are now in global_private.h
76        - atomic.h is not exposed to the C++ API anymore
77        - no need to include config.h anymore for using LS's API header files
78        - fixed warnings in API doc generation
79    
80      * general changes:
81        - replaced the old, confusing MIDI program change mechanism by a
82          flexible MIDI instrument mapper which allows to map arbitrary
83          (MIDI bank, MIDI program) pairs with arbitrary
84          (engine type, instrument file, file index) triplets which will be
85          loaded on the respective channel when such MIDI program change
86          messages arrive, beside that, each entry allows to define a life-time
87          strategy for the instrument, so the user can define whether the
88          instrument should i.e. be permanently loaded (to be able to switch
89          quickly among sounds) or i.e. loaded just on demand when the
90          respective program change arrives (to safe RAM space), as well as a
91          global volume factor for each entry, so the user can adjust the volume
92          dynamic of his mapped instrument collection without having to modify
93          the instrument files, also one can manage arbitrary amount of such
94          MIDI instrument maps and assign each sampler channel individually
95          a certain map, so that i.e. separation of normal instruments and
96          drumkits is possible
97        - new notification events for tracking changes to audio/MIDI devices,
98          MIDI instrument maps, MIDI instruments, FX sends, global volume.
99        - sampler was limited to load max. 200 instruments in the background
100          due to a constant size RingBuffer FIFO which is now replaced by a
101          dynamic (unlimited) size std::list FIFO
102        - added FX sends, these allow to route audio signals to arbitrary audio
103          output channels for being processed by external effect processors
104          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
105          controllers
106        - global (sampler wide) volume can now be controlled at runtime
107        - Implemented new, improved notification system
108        - fixed compilation errors regarding OSX
109          (patch by Toshi Nagata)
110        - implemented instruments database
111        - added support for escape sequences to the instruments database
112        - added highly experimental support for on-the-fly instrument editing
113          within the sampler's process (by using instrument editor plugins),
114          you'll notice the new "Registered instrument editors:" message on
115          startup, added a new LSCP command:
116          "EDIT CHANNEL INSTRUMENT <sampler-channel>"
117          to spawn a matching instrument editor for the instrument on the
118          given sampler channel, the plugin path can be overridden at compile
119          time with ./configure --enable-plugin-dir=/some/dir
120        - added experimental code for synchronizing instrument editors hosted
121          in the sampler's process to safely edit instruments while playing
122          without a crash (hopefully) by either suspending single regions
123          wherever possible or if unavoidable whole engine(s)
124        - fixed several issues in fundamental "Thread" class: set scheduling
125          policy and priority on thread level, set a minimum stack size for
126          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
127          threads simply inherited properties of starting thread instead of
128          setting their own policy and priority
129        - minor fix in our automatic stack trace mechanism on crashes, the
130          main process did not wait for the stack trace process to finish
131          its output
132        - fixed some minor memory leaks
133        - reenabled assembly features support, at the moment only for
134          enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
135        - minor assembly fix in x86 features detection (don't use the PIC
136          register, to avoid relocations in the text segment at runtime)
137        - POSIX callback functions of Thread.h are hidden
138    
139      * MIDI driver:
140        - dispatch bank select (MSB and LSB) messages
141    
142      * audio driver:
143        - the ALSA audio output driver parameters now reflect the correct
144          parameter value ranges for the respective selected sound card
145          (patch by Till Wimmer, a bit fixed and extended)
146    
147      * Gigasampler format engine:
148        - if a filter is used and EG2 finishes before EG1, let the voice
149          die when EG2 has finished (this fixes a problem with clicks and
150          voice starvation for some gigs)
151        - playback is no longer disabled during instrument loading
152        - all notes playing on a channel that changes its instrument keep
153          playing with the old instrument until they get a note off
154          command
155        - EG fix: a release value of zero could cause noises or crash
156        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
157        - EG fine tuning: when attack is zero the EG starts at a level
158          above max sustain level, which means that there is a decay phase
159          even if sustain is 100%
160        - more EG fixes: the level could sometimes go below zero and cause
161          noises or crashes
162        - minor fix of EGDecay (patch by Toshi Nagata)
163        - fixed compiler error when --enable-override-filter-type was
164          supplied to the configure script (fixes #46)
165        - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
166          instead of a fix value
167        - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
168          127 (solo mode) only kill voices if the respective mode really
169          changed
170    
171      * LSCP server:
172        - fixed compile time error for old Bison versions
173          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
174        - parser now supports extended ASCII character set
175          (up to ASCII code 255, i.e. includes now umlauts and accents)
176        - filename arguments in LSCP commands now allow to use escape
177          sequences, that is directly literal as one of: \', \", \\, \n, \r,
178          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
179          code value like \xf2) (fixes bug #24)
180        - the following LSCP commands now also support escape sequences for at
181          least one of their text-based parameters (i.e. name, description):
182          "ADD MIDI_INSTRUMENT_MAP", "MAP MIDI_INSTRUMENT",
183          "SET MIDI_INSTRUMENT_MAP NAME", "SET FX_SEND NAME", "CREATE FX_SEND",
184          "SET DB_INSTRUMENT_DIRECTORY NAME",
185          "SET DB_INSTRUMENT_DIRECTORY DESCRIPTION", "SET DB_INSTRUMENT NAME",
186          "SET DB_INSTRUMENT DESCRIPTION", "FIND DB_INSTRUMENTS",
187          "FIND DB_INSTRUMENT_DIRECTORIES"
188        - returns verbose syntax errors (line and column where syntax error
189          occured, the unexpected character and the actually expected, possible
190          character(s), the latter only if less than 5 possibilities)
191        - made sure that LSCP syntax is not affected by gigedit locale
192          settings
193        - bugfix regarding strings parameter lists: all comma separated lists
194          of strings were treated as being one string containing commas
195          (fixes #57)
196    
197      * Bug fixes:
198        - fixed crash occurring on certain LSCP scripts (Bug 39)
199        - another thread safety fix for lscp "load engine" and "set
200          channel audio output device"
201        - fixed a crash which occurs when reassigning the same engine
202          on a sampler channel with connected MIDI device
203        - fixed a crash which occurs when changing the number of ports of a MIDI
204          device connected to a sampler channel to number less then or equal
205          to the index of the port to which the sampler channel is connected.
206        - The previous bindings were not been disconnected when altering
207          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
208          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
209        - The active stream/voice count statistic was incorrect.
210        - notification events were not been sent for some sampler
211          channel changes
212        - added default min and max values to restrict the number of allowed
213          audio output channels and MIDI input ports
214        - the connection to the PCM interface is now closed when destroying
215          an audio output device
216        - files with slash in their path or filename could not be loaded
217    
218      * test cases:
219        - updated and fixed (haven't been touched in a while)
220    
221    Version 0.4.0 (24 November 2006)
222    
223      * packaging changes:
224        - changed deprecated copyright attribute to license; added ldconfig
225          to post-(un)install steps; added devel package for liblinuxsampler;
226          to linuxsampler.spec (RPM)
227        - install necessary development header files for allowing 3rd party
228          applications to link against liblinuxsampler
229        - liblinuxsampler's API documentation can be generated with 'make docs'
230          (Doxygen required)
231        - added benchmark to automatically detect the best triangle LFO
232          implementation (currently either an integer math solution or a
233          di-harmonic approximation), automatic detection can be overriden
234          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
235          configure script argument though (mandatory for cross-compilation)
236        - do not automatically pick optimized gcc flags if the user already
237          provided some on his own (as CXXFLAGS)
238        - added compile time option to disable processing of All-Notes-Off MIDI
239          messages
240        - added compile time options to allow disabling the various audio and
241          MIDI drivers
242        - fixed automatic GCC CPU switch detection on PPC
243          (patch by Ebrahim Mayat)
244    
245      * Gigasampler format engine:
246        - extensive synthesis optimization
247          (reimplementation of EGs and LFO(s), removed synthesis parameter
248          prerendering and the synthesis parameter matrix in general, splitting
249          each audio fragment into subfragments now where each subfragment uses
250          constant pitch and filter coefficients. The volume coefficient is
251          linearly interpolated inside a subfragment, unless
252          --disable-interpolate-volume is set.)
253        - fine tuning of the EG modulation parameters
254        - improved filter cutoff calculation by adding support for the
255          following gig parameters: Cutoff freq (used when no cutoff
256          controller is defined), Control invert, Minimum cutoff, Velocity
257          curve and Velocity range. The keyboard tracking now scales
258          cutoff frequency instead of resonance.
259        - added support for gig parameter Resonance.
260        - fixed bug in sysex handling (patch by Juan Linietsky)
261        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
262          which can be overridden with --enable-global-attenuation
263        - EG fixes: made the length of "attack hold" stage more
264          accurate. Release stage can now start before attack stage
265          ends. Cancel release didn't work when sustain was zero. Attack
266          time now has a minimal value to prevent clicks.
267        - fixed pitch changes larger than one octave
268        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
269        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
270          all modes can be altered via standard GM messages, that is CC5 for
271          altering portamento time, CC65 for enabling / disabling portamento
272          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
273        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
274          parameter) and crossfade
275        - added support for the "attenuation controller threshold" gig
276          parameter
277        - added smoothing of volume changes caused by control change
278          messages
279        - sample loop parameters are now taken from the DimensionRegion
280          instead of the wave chunk
281        - fixed keyswitching for v3 gigs with a number of keyswitch splits
282          not equal to a power of two
283        - reimplementation of the filter algorithm. The new filter is more
284          accurate and supports all gig filter types, including bandreject
285          and lowpass turbo.
286        - real support for 24 bit samples - samples are not truncated to
287          16 bits anymore
288        - support for aftertouch (channel pressure, not polyphonic
289          aftertouch)
290        - LFO1 behaviour fixed (dampening from max volume instead of
291          amplifying from 0)
292    
293      * LSCP server:
294        - fixed application exit on broken pipe error (fixes bug #20)
295        - fixed the notification messages delay due to lack of
296          network activity (fixes bug #26)
297        - fixed parser bug which occured on space(s) within device parameters
298          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
299    
300      * audio driver:
301        - added aRts audio output driver (by no means RT safe)
302    
303      * MIDI driver:
304        - fixed legacy sysex code which caused dispatching of MIDI SysEx
305          messages several times instead of once
306        - API extension for MIDI drivers which already supply exact time stamps
307          for events (i.e. for offline rendering based MIDI drivers)
308        - added checks for bad MIDI data
309    
310      * linuxsampler application:
311        - show available sampler engine types on startup
312    
313      * general changes:
314        - support for muting sampler channels and solo mode of the same, two new
315          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
316          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
317          introduced for this, the behavior is the same like on a mixer console
318          (patch by Grigor Iliev, a bit adjusted). Also added configure option
319          --enable-process-muted-channels which can be used to enable the
320          processing of muted channels.
321        - support for sostenuto pedal
322        - support for monitoring the total number of active voices
323          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
324          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
325        - fixed some memory management errors
326        - fixed some concurrency problems that could lead to crashes when
327          LSCP commands were executed
328        - fixed crash when instrument loading failed previously on the same
329          sampler channel (fixes bug #36)
330    
331    Version 0.3.3 (15 July 2005)
332    
333      * packaging changes:
334        - fixed compilation with gcc 4.0
335    
336      * Gigasampler format engine:
337        - LFO preprocessing was performed even though the respective LFO was
338          disabled by the instrument patch (minor efficiency fix)
339        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
340          for volume ramp downs in the same fragment (needed for current voice
341          stealing implementation) then simply inform the user with a warning
342          about possible click sounds and reduce the volume ramp down
343          appropriately instead of cancelling the audio device connection
344    
345    Version 0.3.2 (24 June 2005)
346    
347    * packaging changes:    * packaging changes:
348      - updated autotools build files to compile on OS X      - updated autotools build files to compile on OS X
349        (conditional compilation of CoreMIDI and MidiShare drivers)        (conditional compilation of CoreMIDI and MidiShare drivers)
350      - hand-crafted assembly optimization code can be disabled with      - hand-crafted assembly optimization code can be disabled with
351        './configure --disable-asm' (definitely not recommended)        './configure --disable-asm' (definitely not recommended)
352    * support for the gig parameters for "release velocity response"      - fixed 'make dist' rule to include all necessary files
353      curves      - require automake (>= 1.5) for 'make -f Makefile.cvs'
354    * fine tuning of the EGADSR envelope        (due to 'dist-bzip2' automake option)
355    
356      * Gigasampler format engine:
357        - support for the gig parameters for "release velocity response" curves
358        - fine tuning of the EGADSR envelope
359        - volume of release triggered samples now depends on note-on velocity,
360          note length and gig parameter "release trigger decay" instead of
361          note-off velocity.
362        - revised voice stealing
363          (fixes crash and endless loop caused by voice stealing)
364        - don't reset scale tuning on instrument or audio output device change
365        - handle key group conflicts right at the beginning of each fragment
366          instead of when the respective voice is actually launched
367          (fixes undefined behavior if stolen voices belonged to a key group -
368          this case was followed by a "killed voice survived" error message)
369        - fixed minor issue with null/silence samples
370          (those stole voices even though they don't need a voice at all which
371          resulted in "voice stealing didn't work out" messages)
372        - don't reset volume, pan, pitch and MIDI controller values on
373          instrument or audio output device change
374    
375    * LSCP server:    * LSCP server:
376      - fixed some crashs (patch by Grigor Iliev, fixes #19)      - fixed some crashes (patch by Grigor Iliev, fixes #19)
377        - fixed LSCP event "CHANNEL_INFO" notification
378          (e.g. did not notify on volume changes or MIDI program change events)
379    
380      * linuxsampler application:
381        - added command line parameters --lscp-addr and --lscp-port to override
382          default IP address and port of LSCP server
383    
384  Version 0.3.1 (24 May 2005)  Version 0.3.1 (24 May 2005)
385    

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