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revision 686 by schoenebeck, Mon Jul 11 19:12:54 2005 UTC revision 1221 by schoenebeck, Wed Jun 6 18:50:03 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    
57      * MIDI driver:
58        - dispatch bank select (MSB and LSB) messages
59    
60      * audio driver:
61        - the ALSA audio output driver parameters now reflect the correct
62          parameter value ranges for the respective selected sound card
63          (patch by Till Wimmer, a bit fixed and extended)
64    
65      * Gigasampler format engine:
66        - if a filter is used and EG2 finishes before EG1, let the voice
67          die when EG2 has finished (this fixes a problem with clicks and
68          voice starvation for some gigs)
69        - playback is no longer disabled during instrument loading
70        - all notes playing on a channel that changes its instrument keep
71          playing with the old instrument until they get a note off
72          command
73        - EG fix: a release value of zero could cause noises or crash
74        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
75        - EG fine tuning: when attack is zero the EG starts at a level
76          above max sustain level, which means that there is a decay phase
77          even if sustain is 100%
78        - more EG fixes: the level could sometimes go below zero and cause
79          noises or crashes
80        - minor fix of EGDecay (patch by Toshi Nagata)
81        - fixed compiler error when --enable-override-filter-type was
82          supplied to the configure script (fixes #46)
83    
84      * Bug fixes:
85        - fixed crash occurring on certain LSCP scripts (Bug 39)
86        - another thread safety fix for lscp "load engine" and "set
87          channel audio output device"
88    
89      * test cases:
90        - updated and fixed (haven't been touched in a while)
91    
92    Version 0.4.0 (24 November 2006)
93    
94      * packaging changes:
95        - changed deprecated copyright attribute to license; added ldconfig
96          to post-(un)install steps; added devel package for liblinuxsampler;
97          to linuxsampler.spec (RPM)
98        - install necessary development header files for allowing 3rd party
99          applications to link against liblinuxsampler
100        - liblinuxsampler's API documentation can be generated with 'make docs'
101          (Doxygen required)
102        - added benchmark to automatically detect the best triangle LFO
103          implementation (currently either an integer math solution or a
104          di-harmonic approximation), automatic detection can be overriden
105          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
106          configure script argument though (mandatory for cross-compilation)
107        - do not automatically pick optimized gcc flags if the user already
108          provided some on his own (as CXXFLAGS)
109        - added compile time option to disable processing of All-Notes-Off MIDI
110          messages
111        - added compile time options to allow disabling the various audio and
112          MIDI drivers
113        - fixed automatic GCC CPU switch detection on PPC
114          (patch by Ebrahim Mayat)
115    
116      * Gigasampler format engine:
117        - extensive synthesis optimization
118          (reimplementation of EGs and LFO(s), removed synthesis parameter
119          prerendering and the synthesis parameter matrix in general, splitting
120          each audio fragment into subfragments now where each subfragment uses
121          constant pitch and filter coefficients. The volume coefficient is
122          linearly interpolated inside a subfragment, unless
123          --disable-interpolate-volume is set.)
124        - fine tuning of the EG modulation parameters
125        - improved filter cutoff calculation by adding support for the
126          following gig parameters: Cutoff freq (used when no cutoff
127          controller is defined), Control invert, Minimum cutoff, Velocity
128          curve and Velocity range. The keyboard tracking now scales
129          cutoff frequency instead of resonance.
130        - added support for gig parameter Resonance.
131        - fixed bug in sysex handling (patch by Juan Linietsky)
132        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
133          which can be overridden with --enable-global-attenuation
134        - EG fixes: made the length of "attack hold" stage more
135          accurate. Release stage can now start before attack stage
136          ends. Cancel release didn't work when sustain was zero. Attack
137          time now has a minimal value to prevent clicks.
138        - fixed pitch changes larger than one octave
139        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
140        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
141          all modes can be altered via standard GM messages, that is CC5 for
142          altering portamento time, CC65 for enabling / disabling portamento
143          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
144        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
145          parameter) and crossfade
146        - added support for the "attenuation controller threshold" gig
147          parameter
148        - added smoothing of volume changes caused by control change
149          messages
150        - sample loop parameters are now taken from the DimensionRegion
151          instead of the wave chunk
152        - fixed keyswitching for v3 gigs with a number of keyswitch splits
153          not equal to a power of two
154        - reimplementation of the filter algorithm. The new filter is more
155          accurate and supports all gig filter types, including bandreject
156          and lowpass turbo.
157        - real support for 24 bit samples - samples are not truncated to
158          16 bits anymore
159        - support for aftertouch (channel pressure, not polyphonic
160          aftertouch)
161        - LFO1 behaviour fixed (dampening from max volume instead of
162          amplifying from 0)
163    
164      * LSCP server:
165        - fixed application exit on broken pipe error (fixes bug #20)
166        - fixed the notification messages delay due to lack of
167          network activity (fixes bug #26)
168        - fixed parser bug which occured on space(s) within device parameters
169          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
170    
171      * audio driver:
172        - added aRts audio output driver (by no means RT safe)
173    
174      * MIDI driver:
175        - fixed legacy sysex code which caused dispatching of MIDI SysEx
176          messages several times instead of once
177        - API extension for MIDI drivers which already supply exact time stamps
178          for events (i.e. for offline rendering based MIDI drivers)
179        - added checks for bad MIDI data
180    
181      * linuxsampler application:
182        - show available sampler engine types on startup
183    
184      * general changes:
185        - support for muting sampler channels and solo mode of the same, two new
186          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
187          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
188          introduced for this, the behavior is the same like on a mixer console
189          (patch by Grigor Iliev, a bit adjusted). Also added configure option
190          --enable-process-muted-channels which can be used to enable the
191          processing of muted channels.
192        - support for sostenuto pedal
193        - support for monitoring the total number of active voices
194          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
195          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
196        - fixed some memory management errors
197        - fixed some concurrency problems that could lead to crashes when
198          LSCP commands were executed
199        - fixed crash when instrument loading failed previously on the same
200          sampler channel (fixes bug #36)
201    
202    Version 0.3.3 (15 July 2005)
203    
204      * packaging changes:
205      - fixed compilation with gcc 4.0      - fixed compilation with gcc 4.0
206    
207      * Gigasampler format engine:
208        - LFO preprocessing was performed even though the respective LFO was
209          disabled by the instrument patch (minor efficiency fix)
210        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
211          for volume ramp downs in the same fragment (needed for current voice
212          stealing implementation) then simply inform the user with a warning
213          about possible click sounds and reduce the volume ramp down
214          appropriately instead of cancelling the audio device connection
215    
216  Version 0.3.2 (24 June 2005)  Version 0.3.2 (24 June 2005)
217    
218    * packaging changes:    * packaging changes:

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