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revision 677 by schoenebeck, Thu Jun 23 22:44:59 2005 UTC revision 1181 by schoenebeck, Sat May 12 16:03:00 2007 UTC
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1    Version CVS HEAD (?)
2    
3      * packaging changes:
4        - only the API relevant header (and source) files will be exported to
5          the Doxygen API documentation (explicitly listed in Doxyfile.in)
6        - added completely new XCode project files for Mac OSX which is now
7          capable to execute our autoconf environment, thus no need anymore
8          to maintain the compile time configuration file (osx/version.h) for
9          OSX manually (patch by Toshi Nagata)
10    
11      * general changes:
12        - replaced the old, confusing MIDI program change mechanism by a
13          flexible MIDI instrument mapper which allows to map arbitrary
14          (MIDI bank, MIDI program) pairs with arbitrary
15          (engine type, instrument file, file index) triplets which will be
16          loaded on the respective channel when such MIDI program change
17          messages arrive, beside that, each entry allows to define a life-time
18          strategy for the instrument, so the user can define whether the
19          instrument should i.e. be permanently loaded (to be able to switch
20          quickly among sounds) or i.e. loaded just on demand when the
21          respective program change arrives (to safe RAM space), as well as a
22          global volume factor for each entry, so the user can adjust the volume
23          dynamic of his mapped instrument collection without having to modify
24          the instrument files, also one can manage arbitrary amount of such
25          MIDI instrument maps and assign each sampler channel individually
26          a certain map, so that i.e. separation of normal instruments and
27          drumkits is possible
28        - new notification events for tracking changes to audio/MIDI devices,
29          MIDI instrument maps, MIDI instruments, FX sends, global volume.
30        - sampler was limited to load max. 200 instruments in the background
31          due to a constant size RingBuffer FIFO which is now replaced by a
32          dynamic (unlimited) size std::list FIFO
33        - added FX sends, these allow to route audio signals to arbitrary audio
34          output channels for being processed by external effect processors
35          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
36          controllers
37        - global (sampler wide) volume can now be controlled at runtime
38        - Implemented new, improved notification system
39        - fixed compilation errors regarding OSX
40          (patch by Toshi Nagata)
41        - implemented instruments database
42    
43      * MIDI driver:
44        - dispatch bank select (MSB and LSB) messages
45    
46      * audio driver:
47        - the ALSA audio output driver parameters now reflect the correct
48          parameter value ranges for the respective selected sound card
49          (patch by Till Wimmer, a bit fixed and extended)
50    
51      * Gigasampler format engine:
52        - if a filter is used and EG2 finishes before EG1, let the voice
53          die when EG2 has finished (this fixes a problem with clicks and
54          voice starvation for some gigs)
55        - playback is no longer disabled during instrument loading
56        - all notes playing on a channel that changes its instrument keep
57          playing with the old instrument until they get a note off
58          command
59        - EG fix: a release value of zero could cause noises or crash
60        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
61        - EG fine tuning: when attack is zero the EG starts at a level
62          above max sustain level, which means that there is a decay phase
63          even if sustain is 100%
64        - more EG fixes: the level could sometimes go below zero and cause
65          noises or crashes
66        - minor fix of EGDecay (patch by Toshi Nagata)
67        - fixed compiler error when --enable-override-filter-type was
68          supplied to the configure script (fixes #46)
69    
70      * Bug fixes:
71        - fixed crash occurring on certain LSCP scripts (Bug 39)
72        - another thread safety fix for lscp "load engine" and "set
73          channel audio output device"
74    
75    Version 0.4.0 (24 November 2006)
76    
77      * packaging changes:
78        - changed deprecated copyright attribute to license; added ldconfig
79          to post-(un)install steps; added devel package for liblinuxsampler;
80          to linuxsampler.spec (RPM)
81        - install necessary development header files for allowing 3rd party
82          applications to link against liblinuxsampler
83        - liblinuxsampler's API documentation can be generated with 'make docs'
84          (Doxygen required)
85        - added benchmark to automatically detect the best triangle LFO
86          implementation (currently either an integer math solution or a
87          di-harmonic approximation), automatic detection can be overriden
88          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
89          configure script argument though (mandatory for cross-compilation)
90        - do not automatically pick optimized gcc flags if the user already
91          provided some on his own (as CXXFLAGS)
92        - added compile time option to disable processing of All-Notes-Off MIDI
93          messages
94        - added compile time options to allow disabling the various audio and
95          MIDI drivers
96        - fixed automatic GCC CPU switch detection on PPC
97          (patch by Ebrahim Mayat)
98    
99      * Gigasampler format engine:
100        - extensive synthesis optimization
101          (reimplementation of EGs and LFO(s), removed synthesis parameter
102          prerendering and the synthesis parameter matrix in general, splitting
103          each audio fragment into subfragments now where each subfragment uses
104          constant pitch and filter coefficients. The volume coefficient is
105          linearly interpolated inside a subfragment, unless
106          --disable-interpolate-volume is set.)
107        - fine tuning of the EG modulation parameters
108        - improved filter cutoff calculation by adding support for the
109          following gig parameters: Cutoff freq (used when no cutoff
110          controller is defined), Control invert, Minimum cutoff, Velocity
111          curve and Velocity range. The keyboard tracking now scales
112          cutoff frequency instead of resonance.
113        - added support for gig parameter Resonance.
114        - fixed bug in sysex handling (patch by Juan Linietsky)
115        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
116          which can be overridden with --enable-global-attenuation
117        - EG fixes: made the length of "attack hold" stage more
118          accurate. Release stage can now start before attack stage
119          ends. Cancel release didn't work when sustain was zero. Attack
120          time now has a minimal value to prevent clicks.
121        - fixed pitch changes larger than one octave
122        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
123        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
124          all modes can be altered via standard GM messages, that is CC5 for
125          altering portamento time, CC65 for enabling / disabling portamento
126          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
127        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
128          parameter) and crossfade
129        - added support for the "attenuation controller threshold" gig
130          parameter
131        - added smoothing of volume changes caused by control change
132          messages
133        - sample loop parameters are now taken from the DimensionRegion
134          instead of the wave chunk
135        - fixed keyswitching for v3 gigs with a number of keyswitch splits
136          not equal to a power of two
137        - reimplementation of the filter algorithm. The new filter is more
138          accurate and supports all gig filter types, including bandreject
139          and lowpass turbo.
140        - real support for 24 bit samples - samples are not truncated to
141          16 bits anymore
142        - support for aftertouch (channel pressure, not polyphonic
143          aftertouch)
144        - LFO1 behaviour fixed (dampening from max volume instead of
145          amplifying from 0)
146    
147      * LSCP server:
148        - fixed application exit on broken pipe error (fixes bug #20)
149        - fixed the notification messages delay due to lack of
150          network activity (fixes bug #26)
151        - fixed parser bug which occured on space(s) within device parameters
152          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
153    
154      * audio driver:
155        - added aRts audio output driver (by no means RT safe)
156    
157      * MIDI driver:
158        - fixed legacy sysex code which caused dispatching of MIDI SysEx
159          messages several times instead of once
160        - API extension for MIDI drivers which already supply exact time stamps
161          for events (i.e. for offline rendering based MIDI drivers)
162        - added checks for bad MIDI data
163    
164      * linuxsampler application:
165        - show available sampler engine types on startup
166    
167      * general changes:
168        - support for muting sampler channels and solo mode of the same, two new
169          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
170          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
171          introduced for this, the behavior is the same like on a mixer console
172          (patch by Grigor Iliev, a bit adjusted). Also added configure option
173          --enable-process-muted-channels which can be used to enable the
174          processing of muted channels.
175        - support for sostenuto pedal
176        - support for monitoring the total number of active voices
177          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
178          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
179        - fixed some memory management errors
180        - fixed some concurrency problems that could lead to crashes when
181          LSCP commands were executed
182        - fixed crash when instrument loading failed previously on the same
183          sampler channel (fixes bug #36)
184    
185    Version 0.3.3 (15 July 2005)
186    
187      * packaging changes:
188        - fixed compilation with gcc 4.0
189    
190      * Gigasampler format engine:
191        - LFO preprocessing was performed even though the respective LFO was
192          disabled by the instrument patch (minor efficiency fix)
193        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
194          for volume ramp downs in the same fragment (needed for current voice
195          stealing implementation) then simply inform the user with a warning
196          about possible click sounds and reduce the volume ramp down
197          appropriately instead of cancelling the audio device connection
198    
199  Version 0.3.2 (24 June 2005)  Version 0.3.2 (24 June 2005)
200    
201    * packaging changes:    * packaging changes:

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