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revision 660 by schoenebeck, Fri Jun 17 19:49:30 2005 UTC revision 1424 by schoenebeck, Sun Oct 14 22:00:17 2007 UTC
# Line 1  Line 1 
1  Version CVS HEAD (?)  Version 0.5.0 (15 October 2007)
2    
3      * packaging changes:
4        - config.h is not going to be installed along with liblinuxsampler's
5          API header files anymore
6        - only the API relevant header (and source) files will be exported to
7          the Doxygen API documentation (explicitly listed in Doxyfile.in)
8        - added completely new XCode project files for Mac OSX which is now
9          capable to execute our autoconf environment, thus no need anymore
10          to maintain the compile time configuration file (osx/version.h) for
11          OSX manually (patch by Toshi Nagata)
12        - fixed buggy boolean --enable-foo / --disable-foo configure script
13          parameters
14        - global.h now only covers global definitions that are needed for the
15          C++ API header files, all implementation internal global definitions
16          are now in global_private.h
17        - atomic.h is not exposed to the C++ API anymore
18        - no need to include config.h anymore for using LS's API header files
19        - fixed warnings in API doc generation
20    
21      * general changes:
22        - replaced the old, confusing MIDI program change mechanism by a
23          flexible MIDI instrument mapper which allows to map arbitrary
24          (MIDI bank, MIDI program) pairs with arbitrary
25          (engine type, instrument file, file index) triplets which will be
26          loaded on the respective channel when such MIDI program change
27          messages arrive, beside that, each entry allows to define a life-time
28          strategy for the instrument, so the user can define whether the
29          instrument should i.e. be permanently loaded (to be able to switch
30          quickly among sounds) or i.e. loaded just on demand when the
31          respective program change arrives (to safe RAM space), as well as a
32          global volume factor for each entry, so the user can adjust the volume
33          dynamic of his mapped instrument collection without having to modify
34          the instrument files, also one can manage arbitrary amount of such
35          MIDI instrument maps and assign each sampler channel individually
36          a certain map, so that i.e. separation of normal instruments and
37          drumkits is possible
38        - new notification events for tracking changes to audio/MIDI devices,
39          MIDI instrument maps, MIDI instruments, FX sends, global volume.
40        - sampler was limited to load max. 200 instruments in the background
41          due to a constant size RingBuffer FIFO which is now replaced by a
42          dynamic (unlimited) size std::list FIFO
43        - added FX sends, these allow to route audio signals to arbitrary audio
44          output channels for being processed by external effect processors
45          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
46          controllers
47        - global (sampler wide) volume can now be controlled at runtime
48        - Implemented new, improved notification system
49        - fixed compilation errors regarding OSX
50          (patch by Toshi Nagata)
51        - implemented instruments database
52        - added support for escape sequences to the instruments database
53        - added highly experimental support for on-the-fly instrument editing
54          within the sampler's process (by using instrument editor plugins),
55          you'll notice the new "Registered instrument editors:" message on
56          startup, added a new LSCP command:
57          "EDIT CHANNEL INSTRUMENT <sampler-channel>"
58          to spawn a matching instrument editor for the instrument on the
59          given sampler channel, the plugin path can be overridden at compile
60          time with ./configure --enable-plugin-dir=/some/dir
61        - added experimental code for synchronizing instrument editors hosted
62          in the sampler's process to safely edit instruments while playing
63          without a crash (hopefully) by either suspending single regions
64          wherever possible or if unavoidable whole engine(s)
65        - fixed several issues in fundamental "Thread" class: set scheduling
66          policy and priority on thread level, set a minimum stack size for
67          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
68          threads simply inherited properties of starting thread instead of
69          setting their own policy and priority
70        - minor fix in our automatic stack trace mechanism on crashes, the
71          main process did not wait for the stack trace process to finish
72          its output
73        - fixed some minor memory leaks
74        - reenabled assembly features support, at the moment only for
75          enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
76        - minor assembly fix in x86 features detection (don't use the PIC
77          register, to avoid relocations in the text segment at runtime)
78        - POSIX callback functions of Thread.h are hidden
79    
80      * MIDI driver:
81        - dispatch bank select (MSB and LSB) messages
82    
83      * audio driver:
84        - the ALSA audio output driver parameters now reflect the correct
85          parameter value ranges for the respective selected sound card
86          (patch by Till Wimmer, a bit fixed and extended)
87    
88      * Gigasampler format engine:
89        - if a filter is used and EG2 finishes before EG1, let the voice
90          die when EG2 has finished (this fixes a problem with clicks and
91          voice starvation for some gigs)
92        - playback is no longer disabled during instrument loading
93        - all notes playing on a channel that changes its instrument keep
94          playing with the old instrument until they get a note off
95          command
96        - EG fix: a release value of zero could cause noises or crash
97        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
98        - EG fine tuning: when attack is zero the EG starts at a level
99          above max sustain level, which means that there is a decay phase
100          even if sustain is 100%
101        - more EG fixes: the level could sometimes go below zero and cause
102          noises or crashes
103        - minor fix of EGDecay (patch by Toshi Nagata)
104        - fixed compiler error when --enable-override-filter-type was
105          supplied to the configure script (fixes #46)
106        - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
107          instead of a fix value
108        - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
109          127 (solo mode) only kill voices if the respective mode really
110          changed
111    
112      * LSCP server:
113        - fixed compile time error for old Bison versions
114          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
115        - parser now supports extended ASCII character set
116          (up to ASCII code 255, i.e. includes now umlauts and accents)
117        - filename arguments in LSCP commands now allow to use escape
118          sequences, that is directly literal as one of: \', \", \\, \n, \r,
119          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
120          code value like \xf2) (fixes bug #24)
121        - the following LSCP commands now also support escape sequences for at
122          least one of their text-based parameters (i.e. name, description):
123          "ADD MIDI_INSTRUMENT_MAP", "MAP MIDI_INSTRUMENT",
124          "SET MIDI_INSTRUMENT_MAP NAME", "SET FX_SEND NAME", "CREATE FX_SEND",
125          "SET DB_INSTRUMENT_DIRECTORY NAME",
126          "SET DB_INSTRUMENT_DIRECTORY DESCRIPTION", "SET DB_INSTRUMENT NAME",
127          "SET DB_INSTRUMENT DESCRIPTION", "FIND DB_INSTRUMENTS",
128          "FIND DB_INSTRUMENT_DIRECTORIES"
129        - returns verbose syntax errors (line and column where syntax error
130          occured, the unexpected character and the actually expected, possible
131          character(s), the latter only if less than 5 possibilities)
132        - made sure that LSCP syntax is not affected by gigedit locale
133          settings
134        - bugfix regarding strings parameter lists: all comma separated lists
135          of strings were treated as being one string containing commas
136          (fixes #57)
137    
138      * Bug fixes:
139        - fixed crash occurring on certain LSCP scripts (Bug 39)
140        - another thread safety fix for lscp "load engine" and "set
141          channel audio output device"
142        - fixed a crash which occurs when reassigning the same engine
143          on a sampler channel with connected MIDI device
144        - fixed a crash which occurs when changing the number of ports of a MIDI
145          device connected to a sampler channel to number less then or equal
146          to the index of the port to which the sampler channel is connected.
147        - The previous bindings were not been disconnected when altering
148          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
149          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
150        - The active stream/voice count statistic was incorrect.
151        - notification events were not been sent for some sampler
152          channel changes
153        - added default min and max values to restrict the number of allowed
154          audio output channels and MIDI input ports
155        - the connection to the PCM interface is now closed when destroying
156          an audio output device
157        - files with slash in their path or filename could not be loaded
158    
159      * test cases:
160        - updated and fixed (haven't been touched in a while)
161    
162    Version 0.4.0 (24 November 2006)
163    
164      * packaging changes:
165        - changed deprecated copyright attribute to license; added ldconfig
166          to post-(un)install steps; added devel package for liblinuxsampler;
167          to linuxsampler.spec (RPM)
168        - install necessary development header files for allowing 3rd party
169          applications to link against liblinuxsampler
170        - liblinuxsampler's API documentation can be generated with 'make docs'
171          (Doxygen required)
172        - added benchmark to automatically detect the best triangle LFO
173          implementation (currently either an integer math solution or a
174          di-harmonic approximation), automatic detection can be overriden
175          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
176          configure script argument though (mandatory for cross-compilation)
177        - do not automatically pick optimized gcc flags if the user already
178          provided some on his own (as CXXFLAGS)
179        - added compile time option to disable processing of All-Notes-Off MIDI
180          messages
181        - added compile time options to allow disabling the various audio and
182          MIDI drivers
183        - fixed automatic GCC CPU switch detection on PPC
184          (patch by Ebrahim Mayat)
185    
186      * Gigasampler format engine:
187        - extensive synthesis optimization
188          (reimplementation of EGs and LFO(s), removed synthesis parameter
189          prerendering and the synthesis parameter matrix in general, splitting
190          each audio fragment into subfragments now where each subfragment uses
191          constant pitch and filter coefficients. The volume coefficient is
192          linearly interpolated inside a subfragment, unless
193          --disable-interpolate-volume is set.)
194        - fine tuning of the EG modulation parameters
195        - improved filter cutoff calculation by adding support for the
196          following gig parameters: Cutoff freq (used when no cutoff
197          controller is defined), Control invert, Minimum cutoff, Velocity
198          curve and Velocity range. The keyboard tracking now scales
199          cutoff frequency instead of resonance.
200        - added support for gig parameter Resonance.
201        - fixed bug in sysex handling (patch by Juan Linietsky)
202        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
203          which can be overridden with --enable-global-attenuation
204        - EG fixes: made the length of "attack hold" stage more
205          accurate. Release stage can now start before attack stage
206          ends. Cancel release didn't work when sustain was zero. Attack
207          time now has a minimal value to prevent clicks.
208        - fixed pitch changes larger than one octave
209        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
210        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
211          all modes can be altered via standard GM messages, that is CC5 for
212          altering portamento time, CC65 for enabling / disabling portamento
213          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
214        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
215          parameter) and crossfade
216        - added support for the "attenuation controller threshold" gig
217          parameter
218        - added smoothing of volume changes caused by control change
219          messages
220        - sample loop parameters are now taken from the DimensionRegion
221          instead of the wave chunk
222        - fixed keyswitching for v3 gigs with a number of keyswitch splits
223          not equal to a power of two
224        - reimplementation of the filter algorithm. The new filter is more
225          accurate and supports all gig filter types, including bandreject
226          and lowpass turbo.
227        - real support for 24 bit samples - samples are not truncated to
228          16 bits anymore
229        - support for aftertouch (channel pressure, not polyphonic
230          aftertouch)
231        - LFO1 behaviour fixed (dampening from max volume instead of
232          amplifying from 0)
233    
234      * LSCP server:
235        - fixed application exit on broken pipe error (fixes bug #20)
236        - fixed the notification messages delay due to lack of
237          network activity (fixes bug #26)
238        - fixed parser bug which occured on space(s) within device parameters
239          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
240    
241      * audio driver:
242        - added aRts audio output driver (by no means RT safe)
243    
244      * MIDI driver:
245        - fixed legacy sysex code which caused dispatching of MIDI SysEx
246          messages several times instead of once
247        - API extension for MIDI drivers which already supply exact time stamps
248          for events (i.e. for offline rendering based MIDI drivers)
249        - added checks for bad MIDI data
250    
251      * linuxsampler application:
252        - show available sampler engine types on startup
253    
254      * general changes:
255        - support for muting sampler channels and solo mode of the same, two new
256          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
257          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
258          introduced for this, the behavior is the same like on a mixer console
259          (patch by Grigor Iliev, a bit adjusted). Also added configure option
260          --enable-process-muted-channels which can be used to enable the
261          processing of muted channels.
262        - support for sostenuto pedal
263        - support for monitoring the total number of active voices
264          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
265          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
266        - fixed some memory management errors
267        - fixed some concurrency problems that could lead to crashes when
268          LSCP commands were executed
269        - fixed crash when instrument loading failed previously on the same
270          sampler channel (fixes bug #36)
271    
272    Version 0.3.3 (15 July 2005)
273    
274      * packaging changes:
275        - fixed compilation with gcc 4.0
276    
277      * Gigasampler format engine:
278        - LFO preprocessing was performed even though the respective LFO was
279          disabled by the instrument patch (minor efficiency fix)
280        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
281          for volume ramp downs in the same fragment (needed for current voice
282          stealing implementation) then simply inform the user with a warning
283          about possible click sounds and reduce the volume ramp down
284          appropriately instead of cancelling the audio device connection
285    
286    Version 0.3.2 (24 June 2005)
287    
288    * packaging changes:    * packaging changes:
289      - updated autotools build files to compile on OS X      - updated autotools build files to compile on OS X
# Line 15  Version CVS HEAD (?) Line 300  Version CVS HEAD (?)
300      - volume of release triggered samples now depends on note-on velocity,      - volume of release triggered samples now depends on note-on velocity,
301        note length and gig parameter "release trigger decay" instead of        note length and gig parameter "release trigger decay" instead of
302        note-off velocity.        note-off velocity.
303      - revised voice stealing (fixes crash caused by voice stealing)      - revised voice stealing
304          (fixes crash and endless loop caused by voice stealing)
305      - don't reset scale tuning on instrument or audio output device change      - don't reset scale tuning on instrument or audio output device change
306        - handle key group conflicts right at the beginning of each fragment
307          instead of when the respective voice is actually launched
308          (fixes undefined behavior if stolen voices belonged to a key group -
309          this case was followed by a "killed voice survived" error message)
310        - fixed minor issue with null/silence samples
311          (those stole voices even though they don't need a voice at all which
312          resulted in "voice stealing didn't work out" messages)
313        - don't reset volume, pan, pitch and MIDI controller values on
314          instrument or audio output device change
315    
316    * LSCP server:    * LSCP server:
317      - fixed some crashes (patch by Grigor Iliev, fixes #19)      - fixed some crashes (patch by Grigor Iliev, fixes #19)
318      - fixed LSCP event "CHANNEL_INFO" notification      - fixed LSCP event "CHANNEL_INFO" notification
319        (e.g. did not notify on volume changes)        (e.g. did not notify on volume changes or MIDI program change events)
320    
321      * linuxsampler application:
322        - added command line parameters --lscp-addr and --lscp-port to override
323          default IP address and port of LSCP server
324    
325  Version 0.3.1 (24 May 2005)  Version 0.3.1 (24 May 2005)
326    

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