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revision 711 by schoenebeck, Thu Jul 21 09:53:20 2005 UTC revision 1248 by persson, Fri Jun 22 10:10:06 2007 UTC
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1  Version CVS HEAD (?)  Version CVS HEAD (?)
2    
3    * packaging changes:    * 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    
13      * general changes:
14        - replaced the old, confusing MIDI program change mechanism by a
15          flexible MIDI instrument mapper which allows to map arbitrary
16          (MIDI bank, MIDI program) pairs with arbitrary
17          (engine type, instrument file, file index) triplets which will be
18          loaded on the respective channel when such MIDI program change
19          messages arrive, beside that, each entry allows to define a life-time
20          strategy for the instrument, so the user can define whether the
21          instrument should i.e. be permanently loaded (to be able to switch
22          quickly among sounds) or i.e. loaded just on demand when the
23          respective program change arrives (to safe RAM space), as well as a
24          global volume factor for each entry, so the user can adjust the volume
25          dynamic of his mapped instrument collection without having to modify
26          the instrument files, also one can manage arbitrary amount of such
27          MIDI instrument maps and assign each sampler channel individually
28          a certain map, so that i.e. separation of normal instruments and
29          drumkits is possible
30        - new notification events for tracking changes to audio/MIDI devices,
31          MIDI instrument maps, MIDI instruments, FX sends, global volume.
32        - sampler was limited to load max. 200 instruments in the background
33          due to a constant size RingBuffer FIFO which is now replaced by a
34          dynamic (unlimited) size std::list FIFO
35        - added FX sends, these allow to route audio signals to arbitrary audio
36          output channels for being processed by external effect processors
37          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
38          controllers
39        - global (sampler wide) volume can now be controlled at runtime
40        - Implemented new, improved notification system
41        - fixed compilation errors regarding OSX
42          (patch by Toshi Nagata)
43        - implemented instruments database
44        - added highly experimental support for on-the-fly instrument editing
45          within the sampler's process (by using instrument editor plugins),
46          you'll notice the new "Registered instrument editors:" message on
47          startup, added a new LSCP command "EDIT INSTRUMENT <sampler-channel>"
48          to spawn a matching instrument editor for the instrument on the
49          given sampler channel, the plugin path can be overridden at compile
50          time with ./configure --enable-plugin-dir=/some/dir
51        - fixed several issues in fundamental "Thread" class: set scheduling
52          policy and priority on thread level, set a minimum stack size for
53          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
54          threads simply inherited properties of starting thread instead of
55          setting their own policy and priority
56        - minor fix in our automatic stack trace mechanism on crashes, the
57          main process did not wait for the stack trace process to finish
58          its output
59        - fixed some minor memory leaks
60    
61      * MIDI driver:
62        - dispatch bank select (MSB and LSB) messages
63    
64      * audio driver:
65        - the ALSA audio output driver parameters now reflect the correct
66          parameter value ranges for the respective selected sound card
67          (patch by Till Wimmer, a bit fixed and extended)
68    
69      * Gigasampler format engine:
70        - if a filter is used and EG2 finishes before EG1, let the voice
71          die when EG2 has finished (this fixes a problem with clicks and
72          voice starvation for some gigs)
73        - playback is no longer disabled during instrument loading
74        - all notes playing on a channel that changes its instrument keep
75          playing with the old instrument until they get a note off
76          command
77        - EG fix: a release value of zero could cause noises or crash
78        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
79        - EG fine tuning: when attack is zero the EG starts at a level
80          above max sustain level, which means that there is a decay phase
81          even if sustain is 100%
82        - more EG fixes: the level could sometimes go below zero and cause
83          noises or crashes
84        - minor fix of EGDecay (patch by Toshi Nagata)
85        - fixed compiler error when --enable-override-filter-type was
86          supplied to the configure script (fixes #46)
87    
88      * LSCP server:
89        - fixed compile time error for old Bison versions
90          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
91        - parser now supports extended ASCII character set
92          (up to ASCII code 255, i.e. includes now umlauts and accents)
93        - filename arguments in LSCP commands now allow to use escape
94          sequences, that is directly literal as one of: \', \", \\, \n, \r,
95          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
96          code value like \xf2) (fixes bug #24)
97    
98      * Bug fixes:
99        - fixed crash occurring on certain LSCP scripts (Bug 39)
100        - another thread safety fix for lscp "load engine" and "set
101          channel audio output device"
102    
103      * test cases:
104        - updated and fixed (haven't been touched in a while)
105    
106    Version 0.4.0 (24 November 2006)
107    
108      * packaging changes:
109        - changed deprecated copyright attribute to license; added ldconfig
110          to post-(un)install steps; added devel package for liblinuxsampler;
111          to linuxsampler.spec (RPM)
112      - install necessary development header files for allowing 3rd party      - install necessary development header files for allowing 3rd party
113        applications to link against liblinuxsampler        applications to link against liblinuxsampler
114      - liblinuxsampler's API documentation can be generated with 'make docs'      - liblinuxsampler's API documentation can be generated with 'make docs'
115        (Doxygen required)        (Doxygen required)
116        - added benchmark to automatically detect the best triangle LFO
117          implementation (currently either an integer math solution or a
118          di-harmonic approximation), automatic detection can be overriden
119          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
120          configure script argument though (mandatory for cross-compilation)
121        - do not automatically pick optimized gcc flags if the user already
122          provided some on his own (as CXXFLAGS)
123        - added compile time option to disable processing of All-Notes-Off MIDI
124          messages
125        - added compile time options to allow disabling the various audio and
126          MIDI drivers
127        - fixed automatic GCC CPU switch detection on PPC
128          (patch by Ebrahim Mayat)
129    
130    * Gigasampler format engine:    * Gigasampler format engine:
131        - extensive synthesis optimization
132          (reimplementation of EGs and LFO(s), removed synthesis parameter
133          prerendering and the synthesis parameter matrix in general, splitting
134          each audio fragment into subfragments now where each subfragment uses
135          constant pitch and filter coefficients. The volume coefficient is
136          linearly interpolated inside a subfragment, unless
137          --disable-interpolate-volume is set.)
138      - fine tuning of the EG modulation parameters      - fine tuning of the EG modulation parameters
139        - improved filter cutoff calculation by adding support for the
140          following gig parameters: Cutoff freq (used when no cutoff
141          controller is defined), Control invert, Minimum cutoff, Velocity
142          curve and Velocity range. The keyboard tracking now scales
143          cutoff frequency instead of resonance.
144        - added support for gig parameter Resonance.
145        - fixed bug in sysex handling (patch by Juan Linietsky)
146        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
147          which can be overridden with --enable-global-attenuation
148        - EG fixes: made the length of "attack hold" stage more
149          accurate. Release stage can now start before attack stage
150          ends. Cancel release didn't work when sustain was zero. Attack
151          time now has a minimal value to prevent clicks.
152        - fixed pitch changes larger than one octave
153        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
154        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
155          all modes can be altered via standard GM messages, that is CC5 for
156          altering portamento time, CC65 for enabling / disabling portamento
157          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
158        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
159          parameter) and crossfade
160        - added support for the "attenuation controller threshold" gig
161          parameter
162        - added smoothing of volume changes caused by control change
163          messages
164        - sample loop parameters are now taken from the DimensionRegion
165          instead of the wave chunk
166        - fixed keyswitching for v3 gigs with a number of keyswitch splits
167          not equal to a power of two
168        - reimplementation of the filter algorithm. The new filter is more
169          accurate and supports all gig filter types, including bandreject
170          and lowpass turbo.
171        - real support for 24 bit samples - samples are not truncated to
172          16 bits anymore
173        - support for aftertouch (channel pressure, not polyphonic
174          aftertouch)
175        - LFO1 behaviour fixed (dampening from max volume instead of
176          amplifying from 0)
177    
178    * LSCP server:    * LSCP server:
179      - fixed application exit on broken pipe error (fixes bug #20)      - fixed application exit on broken pipe error (fixes bug #20)
180        - fixed the notification messages delay due to lack of
181          network activity (fixes bug #26)
182        - fixed parser bug which occured on space(s) within device parameters
183          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
184    
185      * audio driver:
186        - added aRts audio output driver (by no means RT safe)
187    
188      * MIDI driver:
189        - fixed legacy sysex code which caused dispatching of MIDI SysEx
190          messages several times instead of once
191        - API extension for MIDI drivers which already supply exact time stamps
192          for events (i.e. for offline rendering based MIDI drivers)
193        - added checks for bad MIDI data
194    
195      * linuxsampler application:
196        - show available sampler engine types on startup
197    
198    * general changes:    * general changes:
199      - 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
200        LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new        LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
201        fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were        fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
202        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
203        (patch by Grigor Iliev, a bit adjusted)        (patch by Grigor Iliev, a bit adjusted). Also added configure option
204          --enable-process-muted-channels which can be used to enable the
205          processing of muted channels.
206        - support for sostenuto pedal
207        - support for monitoring the total number of active voices
208          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
209          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
210        - fixed some memory management errors
211        - fixed some concurrency problems that could lead to crashes when
212          LSCP commands were executed
213        - fixed crash when instrument loading failed previously on the same
214          sampler channel (fixes bug #36)
215    
216  Version 0.3.3 (15 July 2005)  Version 0.3.3 (15 July 2005)
217    

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