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revision 711 by schoenebeck, Thu Jul 21 09:53:20 2005 UTC revision 1646 by persson, Sun Jan 20 15:04:51 2008 UTC
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1  Version CVS HEAD (?)  Version CVS HEAD (?)
2    
3    * packaging changes:    * packaging changes:
4        - autoconf bugfix: the PKG_CONFIG variable wasn't initialized properly,
5          causing e.g. the libgig test to fail when
6          "./configure --disable-jack-driver" was used
7          (patch by Alexis Ballier)
8    
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    
19      * audio driver:
20        - removed the nonsense audio channel constraint (which was hard coded to
21          max. 100 audio channels) for most audio drivers
22        - JACK audio driver did not offer a device parameter "SAMPLERATE" as
23          opposed to the LSCP specs
24        - bugfix: the SAMPLERATE parameter of some drivers (e.g. JACK)
25          reflected the wrong value
26        - fixed a memory management bug in ASIO driver
27    
28      * instruments database:
29        - avoid time consuming samples scanning when adding instruments
30          to the instruments database
31    
32      * Gigasampler format engine:
33        - fixed a memory leak that could happen when a channel was deleted
34          while notes were playing
35        - made it possible to load an instrument even if the audio thread
36          isn't running
37    
38    Version 0.5.1 (6 December 2007)
39    
40      * packaging changes:
41        - added autoconf checks for pthread library
42        - added autoconf check for pthread bug found on certain NPTL-enabled
43          glibc versions (see Gentoo bug report #194076)
44        - added autoconf checks for MS Windows
45    
46      * general changes:
47        - bugfix: the thread used by an editor plugin didn't die when the
48          editor closed
49        - bugfix: Ringbuffer.h: fill_write_space_with_null() did not zero
50          out all the space. operator--() did not apply size_mask after
51          decrementing the read_ptr. DEFAULT_WRAP_ELEMENTS set to 0 in
52          order to avoid problems with the _NonVolatileReader functions.
53        - bugfix: Stream.h: added a missing divide by BytesPerSample in
54          GetWriteSpace(). Since this function is currently only used in
55          the stream's qsort() compare function, it didn't trigger any
56          bugs.
57        - Resampler.h, Synthesizer.h: cubic interpolation now works in
58          24bit mode too. Faster method to read 24bit words on little
59          endian machines (x86): replaced 3 byte reads + shifts with a 1
60          unaligned 32bit read and shift
61        - experimental support for MS Windows (MIDI input via MME, AUDIO
62          output via ASIO)
63        - made handling of SIGINT signal (Ctrl-C) a bit more robust
64        - support for monitoring the total number of active disk streams
65          (new LSCP commands: GET TOTAL_STREAM_COUNT,
66          SUBSCRIBE TOTAL_STREAM_COUNT, UNSUBSCRIBE TOTAL_STREAM_COUNT)
67    
68      * AUDIO driver:
69        - added Windows ASIO low latency audio driver
70    
71      * MIDI driver:
72        - added MME Windows MIDI driver
73    
74      * LSCP server:
75        - added support for Windows style path / filenames, however with
76          forward slash path separators instead of backslash
77          (i.e. "C:/foo/bar.gig")
78        - allow naughty liblscp to send non-string device parameters within
79          apostrophes as well
80        - added new LSCP commands: "GET FILE INSTRUMENTS <file>",
81          "LIST FILE INSTRUMENTS <file>" and
82          "GET FILE INSTRUMENT INFO <file> <index>" for retrieving informations
83          about an arbitrary instrument file on the system where the sampler is
84          running on
85    
86    Version 0.5.0 (15 October 2007)
87    
88      * packaging changes:
89        - config.h is not going to be installed along with liblinuxsampler's
90          API header files anymore
91        - only the API relevant header (and source) files will be exported to
92          the Doxygen API documentation (explicitly listed in Doxyfile.in)
93        - added completely new XCode project files for Mac OSX which is now
94          capable to execute our autoconf environment, thus no need anymore
95          to maintain the compile time configuration file (osx/version.h) for
96          OSX manually (patch by Toshi Nagata)
97        - fixed buggy boolean --enable-foo / --disable-foo configure script
98          parameters
99        - global.h now only covers global definitions that are needed for the
100          C++ API header files, all implementation internal global definitions
101          are now in global_private.h
102        - atomic.h is not exposed to the C++ API anymore
103        - no need to include config.h anymore for using LS's API header files
104        - fixed warnings in API doc generation
105    
106      * general changes:
107        - replaced the old, confusing MIDI program change mechanism by a
108          flexible MIDI instrument mapper which allows to map arbitrary
109          (MIDI bank, MIDI program) pairs with arbitrary
110          (engine type, instrument file, file index) triplets which will be
111          loaded on the respective channel when such MIDI program change
112          messages arrive, beside that, each entry allows to define a life-time
113          strategy for the instrument, so the user can define whether the
114          instrument should i.e. be permanently loaded (to be able to switch
115          quickly among sounds) or i.e. loaded just on demand when the
116          respective program change arrives (to safe RAM space), as well as a
117          global volume factor for each entry, so the user can adjust the volume
118          dynamic of his mapped instrument collection without having to modify
119          the instrument files, also one can manage arbitrary amount of such
120          MIDI instrument maps and assign each sampler channel individually
121          a certain map, so that i.e. separation of normal instruments and
122          drumkits is possible
123        - new notification events for tracking changes to audio/MIDI devices,
124          MIDI instrument maps, MIDI instruments, FX sends, global volume.
125        - sampler was limited to load max. 200 instruments in the background
126          due to a constant size RingBuffer FIFO which is now replaced by a
127          dynamic (unlimited) size std::list FIFO
128        - added FX sends, these allow to route audio signals to arbitrary audio
129          output channels for being processed by external effect processors
130          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
131          controllers
132        - global (sampler wide) volume can now be controlled at runtime
133        - Implemented new, improved notification system
134        - fixed compilation errors regarding OSX
135          (patch by Toshi Nagata)
136        - implemented instruments database
137        - added support for escape sequences to the instruments database
138        - added highly experimental support for on-the-fly instrument editing
139          within the sampler's process (by using instrument editor plugins),
140          you'll notice the new "Registered instrument editors:" message on
141          startup, added a new LSCP command:
142          "EDIT CHANNEL INSTRUMENT <sampler-channel>"
143          to spawn a matching instrument editor for the instrument on the
144          given sampler channel, the plugin path can be overridden at compile
145          time with ./configure --enable-plugin-dir=/some/dir
146        - added experimental code for synchronizing instrument editors hosted
147          in the sampler's process to safely edit instruments while playing
148          without a crash (hopefully) by either suspending single regions
149          wherever possible or if unavoidable whole engine(s)
150        - fixed several issues in fundamental "Thread" class: set scheduling
151          policy and priority on thread level, set a minimum stack size for
152          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
153          threads simply inherited properties of starting thread instead of
154          setting their own policy and priority
155        - minor fix in our automatic stack trace mechanism on crashes, the
156          main process did not wait for the stack trace process to finish
157          its output
158        - fixed some minor memory leaks
159        - reenabled assembly features support, at the moment only for
160          enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
161        - minor assembly fix in x86 features detection (don't use the PIC
162          register, to avoid relocations in the text segment at runtime)
163        - POSIX callback functions of Thread.h are hidden
164    
165      * MIDI driver:
166        - dispatch bank select (MSB and LSB) messages
167    
168      * audio driver:
169        - the ALSA audio output driver parameters now reflect the correct
170          parameter value ranges for the respective selected sound card
171          (patch by Till Wimmer, a bit fixed and extended)
172    
173      * Gigasampler format engine:
174        - if a filter is used and EG2 finishes before EG1, let the voice
175          die when EG2 has finished (this fixes a problem with clicks and
176          voice starvation for some gigs)
177        - playback is no longer disabled during instrument loading
178        - all notes playing on a channel that changes its instrument keep
179          playing with the old instrument until they get a note off
180          command
181        - EG fix: a release value of zero could cause noises or crash
182        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
183        - EG fine tuning: when attack is zero the EG starts at a level
184          above max sustain level, which means that there is a decay phase
185          even if sustain is 100%
186        - more EG fixes: the level could sometimes go below zero and cause
187          noises or crashes
188        - minor fix of EGDecay (patch by Toshi Nagata)
189        - fixed compiler error when --enable-override-filter-type was
190          supplied to the configure script (fixes #46)
191        - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
192          instead of a fix value
193        - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
194          127 (solo mode) only kill voices if the respective mode really
195          changed
196    
197      * LSCP server:
198        - fixed compile time error for old Bison versions
199          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
200        - parser now supports extended ASCII character set
201          (up to ASCII code 255, i.e. includes now umlauts and accents)
202        - filename arguments in LSCP commands now allow to use escape
203          sequences, that is directly literal as one of: \', \", \\, \n, \r,
204          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
205          code value like \xf2) (fixes bug #24)
206        - the following LSCP commands now also support escape sequences for at
207          least one of their text-based parameters (i.e. name, description):
208          "ADD MIDI_INSTRUMENT_MAP", "MAP MIDI_INSTRUMENT",
209          "SET MIDI_INSTRUMENT_MAP NAME", "SET FX_SEND NAME", "CREATE FX_SEND",
210          "SET DB_INSTRUMENT_DIRECTORY NAME",
211          "SET DB_INSTRUMENT_DIRECTORY DESCRIPTION", "SET DB_INSTRUMENT NAME",
212          "SET DB_INSTRUMENT DESCRIPTION", "FIND DB_INSTRUMENTS",
213          "FIND DB_INSTRUMENT_DIRECTORIES"
214        - returns verbose syntax errors (line and column where syntax error
215          occured, the unexpected character and the actually expected, possible
216          character(s), the latter only if less than 5 possibilities)
217        - made sure that LSCP syntax is not affected by gigedit locale
218          settings
219        - bugfix regarding strings parameter lists: all comma separated lists
220          of strings were treated as being one string containing commas
221          (fixes #57)
222    
223      * Bug fixes:
224        - fixed crash occurring on certain LSCP scripts (Bug 39)
225        - another thread safety fix for lscp "load engine" and "set
226          channel audio output device"
227        - fixed a crash which occurs when reassigning the same engine
228          on a sampler channel with connected MIDI device
229        - fixed a crash which occurs when changing the number of ports of a MIDI
230          device connected to a sampler channel to number less then or equal
231          to the index of the port to which the sampler channel is connected.
232        - The previous bindings were not been disconnected when altering
233          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
234          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
235        - The active stream/voice count statistic was incorrect.
236        - notification events were not been sent for some sampler
237          channel changes
238        - added default min and max values to restrict the number of allowed
239          audio output channels and MIDI input ports
240        - the connection to the PCM interface is now closed when destroying
241          an audio output device
242        - files with slash in their path or filename could not be loaded
243    
244      * test cases:
245        - updated and fixed (haven't been touched in a while)
246    
247    Version 0.4.0 (24 November 2006)
248    
249      * packaging changes:
250        - changed deprecated copyright attribute to license; added ldconfig
251          to post-(un)install steps; added devel package for liblinuxsampler;
252          to linuxsampler.spec (RPM)
253      - install necessary development header files for allowing 3rd party      - install necessary development header files for allowing 3rd party
254        applications to link against liblinuxsampler        applications to link against liblinuxsampler
255      - liblinuxsampler's API documentation can be generated with 'make docs'      - liblinuxsampler's API documentation can be generated with 'make docs'
256        (Doxygen required)        (Doxygen required)
257        - added benchmark to automatically detect the best triangle LFO
258          implementation (currently either an integer math solution or a
259          di-harmonic approximation), automatic detection can be overriden
260          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
261          configure script argument though (mandatory for cross-compilation)
262        - do not automatically pick optimized gcc flags if the user already
263          provided some on his own (as CXXFLAGS)
264        - added compile time option to disable processing of All-Notes-Off MIDI
265          messages
266        - added compile time options to allow disabling the various audio and
267          MIDI drivers
268        - fixed automatic GCC CPU switch detection on PPC
269          (patch by Ebrahim Mayat)
270    
271    * Gigasampler format engine:    * Gigasampler format engine:
272        - extensive synthesis optimization
273          (reimplementation of EGs and LFO(s), removed synthesis parameter
274          prerendering and the synthesis parameter matrix in general, splitting
275          each audio fragment into subfragments now where each subfragment uses
276          constant pitch and filter coefficients. The volume coefficient is
277          linearly interpolated inside a subfragment, unless
278          --disable-interpolate-volume is set.)
279      - fine tuning of the EG modulation parameters      - fine tuning of the EG modulation parameters
280        - improved filter cutoff calculation by adding support for the
281          following gig parameters: Cutoff freq (used when no cutoff
282          controller is defined), Control invert, Minimum cutoff, Velocity
283          curve and Velocity range. The keyboard tracking now scales
284          cutoff frequency instead of resonance.
285        - added support for gig parameter Resonance.
286        - fixed bug in sysex handling (patch by Juan Linietsky)
287        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
288          which can be overridden with --enable-global-attenuation
289        - EG fixes: made the length of "attack hold" stage more
290          accurate. Release stage can now start before attack stage
291          ends. Cancel release didn't work when sustain was zero. Attack
292          time now has a minimal value to prevent clicks.
293        - fixed pitch changes larger than one octave
294        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
295        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
296          all modes can be altered via standard GM messages, that is CC5 for
297          altering portamento time, CC65 for enabling / disabling portamento
298          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
299        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
300          parameter) and crossfade
301        - added support for the "attenuation controller threshold" gig
302          parameter
303        - added smoothing of volume changes caused by control change
304          messages
305        - sample loop parameters are now taken from the DimensionRegion
306          instead of the wave chunk
307        - fixed keyswitching for v3 gigs with a number of keyswitch splits
308          not equal to a power of two
309        - reimplementation of the filter algorithm. The new filter is more
310          accurate and supports all gig filter types, including bandreject
311          and lowpass turbo.
312        - real support for 24 bit samples - samples are not truncated to
313          16 bits anymore
314        - support for aftertouch (channel pressure, not polyphonic
315          aftertouch)
316        - LFO1 behaviour fixed (dampening from max volume instead of
317          amplifying from 0)
318    
319    * LSCP server:    * LSCP server:
320      - fixed application exit on broken pipe error (fixes bug #20)      - fixed application exit on broken pipe error (fixes bug #20)
321        - fixed the notification messages delay due to lack of
322          network activity (fixes bug #26)
323        - fixed parser bug which occured on space(s) within device parameters
324          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
325    
326      * audio driver:
327        - added aRts audio output driver (by no means RT safe)
328    
329      * MIDI driver:
330        - fixed legacy sysex code which caused dispatching of MIDI SysEx
331          messages several times instead of once
332        - API extension for MIDI drivers which already supply exact time stamps
333          for events (i.e. for offline rendering based MIDI drivers)
334        - added checks for bad MIDI data
335    
336      * linuxsampler application:
337        - show available sampler engine types on startup
338    
339    * general changes:    * general changes:
340      - support for muting sampler channels and solo mode of the same, two new      - support for muting sampler channels and solo mode of the same, two new
341        LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new        LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
342        fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were        fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
343        introduced for this, the behavior is the same like on a mixer console        introduced for this, the behavior is the same like on a mixer console
344        (patch by Grigor Iliev, a bit adjusted)        (patch by Grigor Iliev, a bit adjusted). Also added configure option
345          --enable-process-muted-channels which can be used to enable the
346          processing of muted channels.
347        - support for sostenuto pedal
348        - support for monitoring the total number of active voices
349          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
350          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
351        - fixed some memory management errors
352        - fixed some concurrency problems that could lead to crashes when
353          LSCP commands were executed
354        - fixed crash when instrument loading failed previously on the same
355          sampler channel (fixes bug #36)
356    
357  Version 0.3.3 (15 July 2005)  Version 0.3.3 (15 July 2005)
358    

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