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revision 677 by schoenebeck, Thu Jun 23 22:44:59 2005 UTC revision 1130 by iliev, Sun Mar 25 18:59:14 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    
7      * general changes:
8        - replaced the old, confusing MIDI program change mechanism by a
9          flexible MIDI instrument mapper which allows to map arbitrary
10          (MIDI bank, MIDI program) pairs with arbitrary
11          (engine type, instrument file, file index) triplets which will be
12          loaded on the respective channel when such MIDI program change
13          messages arrive, beside that, each entry allows to define a life-time
14          strategy for the instrument, so the user can define whether the
15          instrument should i.e. be permanently loaded (to be able to switch
16          quickly among sounds) or i.e. loaded just on demand when the
17          respective program change arrives (to safe RAM space), as well as a
18          global volume factor for each entry, so the user can adjust the volume
19          dynamic of his mapped instrument collection without having to modify
20          the instrument files, also one can manage arbitrary amount of such
21          MIDI instrument maps and assign each sampler channel individually
22          a certain map, so that i.e. separation of normal instruments and
23          drumkits is possible
24        - new notification events for tracking changes to audio/MIDI devices,
25          MIDI instrument maps, MIDI instruments, FX sends, global volume.
26        - sampler was limited to load max. 200 instruments in the background
27          due to a constant size RingBuffer FIFO which is now replaced by a
28          dynamic (unlimited) size std::list FIFO
29        - added FX sends, these allow to route audio signals to arbitrary audio
30          output channels for being processed by external effect processors
31          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
32          controllers
33        - global (sampler wide) volume can now be controlled at runtime
34        - Implemented new, improved notification system
35    
36      * MIDI driver:
37        - dispatch bank select (MSB and LSB) messages
38    
39      * audio driver:
40        - the ALSA audio output driver parameters now reflect the correct
41          parameter value ranges for the respective selected sound card
42          (patch by Till Wimmer, a bit fixed and extended)
43    
44      * Gigasampler format engine:
45        - if a filter is used and EG2 finishes before EG1, let the voice
46          die when EG2 has finished (this fixes a problem with clicks and
47          voice starvation for some gigs)
48        - playback is no longer disabled during instrument loading
49        - all notes playing on a channel that changes its instrument keep
50          playing with the old instrument until they get a note off
51          command
52        - EG fix: a release value of zero could cause noises or crash
53        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
54        - EG fine tuning: when attack is zero the EG starts at a level
55          above max sustain level, which means that there is a decay phase
56          even if sustain is 100%
57    
58      * Bug fixes:
59        - fixed crash occurring on certain LSCP scripts (Bug 39)
60        - another thread safety fix for lscp "load engine" and "set
61          channel audio output device"
62    
63    Version 0.4.0 (24 November 2006)
64    
65      * packaging changes:
66        - changed deprecated copyright attribute to license; added ldconfig
67          to post-(un)install steps; added devel package for liblinuxsampler;
68          to linuxsampler.spec (RPM)
69        - install necessary development header files for allowing 3rd party
70          applications to link against liblinuxsampler
71        - liblinuxsampler's API documentation can be generated with 'make docs'
72          (Doxygen required)
73        - added benchmark to automatically detect the best triangle LFO
74          implementation (currently either an integer math solution or a
75          di-harmonic approximation), automatic detection can be overriden
76          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
77          configure script argument though (mandatory for cross-compilation)
78        - do not automatically pick optimized gcc flags if the user already
79          provided some on his own (as CXXFLAGS)
80        - added compile time option to disable processing of All-Notes-Off MIDI
81          messages
82        - added compile time options to allow disabling the various audio and
83          MIDI drivers
84        - fixed automatic GCC CPU switch detection on PPC
85          (patch by Ebrahim Mayat)
86    
87      * Gigasampler format engine:
88        - extensive synthesis optimization
89          (reimplementation of EGs and LFO(s), removed synthesis parameter
90          prerendering and the synthesis parameter matrix in general, splitting
91          each audio fragment into subfragments now where each subfragment uses
92          constant pitch and filter coefficients. The volume coefficient is
93          linearly interpolated inside a subfragment, unless
94          --disable-interpolate-volume is set.)
95        - fine tuning of the EG modulation parameters
96        - improved filter cutoff calculation by adding support for the
97          following gig parameters: Cutoff freq (used when no cutoff
98          controller is defined), Control invert, Minimum cutoff, Velocity
99          curve and Velocity range. The keyboard tracking now scales
100          cutoff frequency instead of resonance.
101        - added support for gig parameter Resonance.
102        - fixed bug in sysex handling (patch by Juan Linietsky)
103        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
104          which can be overridden with --enable-global-attenuation
105        - EG fixes: made the length of "attack hold" stage more
106          accurate. Release stage can now start before attack stage
107          ends. Cancel release didn't work when sustain was zero. Attack
108          time now has a minimal value to prevent clicks.
109        - fixed pitch changes larger than one octave
110        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
111        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
112          all modes can be altered via standard GM messages, that is CC5 for
113          altering portamento time, CC65 for enabling / disabling portamento
114          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
115        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
116          parameter) and crossfade
117        - added support for the "attenuation controller threshold" gig
118          parameter
119        - added smoothing of volume changes caused by control change
120          messages
121        - sample loop parameters are now taken from the DimensionRegion
122          instead of the wave chunk
123        - fixed keyswitching for v3 gigs with a number of keyswitch splits
124          not equal to a power of two
125        - reimplementation of the filter algorithm. The new filter is more
126          accurate and supports all gig filter types, including bandreject
127          and lowpass turbo.
128        - real support for 24 bit samples - samples are not truncated to
129          16 bits anymore
130        - support for aftertouch (channel pressure, not polyphonic
131          aftertouch)
132        - LFO1 behaviour fixed (dampening from max volume instead of
133          amplifying from 0)
134    
135      * LSCP server:
136        - fixed application exit on broken pipe error (fixes bug #20)
137        - fixed the notification messages delay due to lack of
138          network activity (fixes bug #26)
139        - fixed parser bug which occured on space(s) within device parameters
140          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
141    
142      * audio driver:
143        - added aRts audio output driver (by no means RT safe)
144    
145      * MIDI driver:
146        - fixed legacy sysex code which caused dispatching of MIDI SysEx
147          messages several times instead of once
148        - API extension for MIDI drivers which already supply exact time stamps
149          for events (i.e. for offline rendering based MIDI drivers)
150        - added checks for bad MIDI data
151    
152      * linuxsampler application:
153        - show available sampler engine types on startup
154    
155      * general changes:
156        - support for muting sampler channels and solo mode of the same, two new
157          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
158          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
159          introduced for this, the behavior is the same like on a mixer console
160          (patch by Grigor Iliev, a bit adjusted). Also added configure option
161          --enable-process-muted-channels which can be used to enable the
162          processing of muted channels.
163        - support for sostenuto pedal
164        - support for monitoring the total number of active voices
165          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
166          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
167        - fixed some memory management errors
168        - fixed some concurrency problems that could lead to crashes when
169          LSCP commands were executed
170        - fixed crash when instrument loading failed previously on the same
171          sampler channel (fixes bug #36)
172    
173    Version 0.3.3 (15 July 2005)
174    
175      * packaging changes:
176        - fixed compilation with gcc 4.0
177    
178      * Gigasampler format engine:
179        - LFO preprocessing was performed even though the respective LFO was
180          disabled by the instrument patch (minor efficiency fix)
181        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
182          for volume ramp downs in the same fragment (needed for current voice
183          stealing implementation) then simply inform the user with a warning
184          about possible click sounds and reduce the volume ramp down
185          appropriately instead of cancelling the audio device connection
186    
187  Version 0.3.2 (24 June 2005)  Version 0.3.2 (24 June 2005)
188    
189    * packaging changes:    * packaging changes:

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