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revision 668 by schoenebeck, Mon Jun 20 15:30:47 2005 UTC revision 1041 by schoenebeck, Wed Feb 7 17:45:19 2007 UTC
# Line 1  Line 1 
1  Version CVS HEAD (?)  Version CVS HEAD (?)
2    
3      * general changes:
4        - replaced the old, confusing MIDI program change mechanism by a
5          flexible MIDI instrument mapper which allows to map arbitrary
6          (MIDI bank, MIDI program) pairs with arbitrary
7          (engine type, instrument file, file index) triplets which will be
8          loaded on the respective channel when such MIDI program change
9          messages arrive, beside that, each entry allows to define a life-time
10          strategy for the instrument, so the user can define whether the
11          instrument should i.e. be permanently loaded (to be able to switch
12          quickly among sounds) or i.e. loaded just on demand when the
13          respective program change arrives (to safe RAM space), as well as a
14          global volume factor for each entry, so the user can adjust the volume
15          dynamic of his mapped instrument collection without having to modify
16          the instrument files, also one can manage arbitrary amount of such
17          MIDI instrument maps and assign each sampler channel individually
18          a certain map, so that i.e. separation of normal instruments and
19          drumkits is possible
20        - new notification events for tracking audio/MIDI device changes,
21          MIDI instrument map changes and MIDI instrument changes
22        - sampler was limited to load max. 200 instruments in the background
23          due to a constant size RingBuffer FIFO which is now replaced by a
24          dynamic (unlimited) size std::list FIFO
25        - added FX sends, these allow to route audio signals to arbitrary audio
26          output channels for being processed by external effect processors
27          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
28          controllers
29        - global (sampler wide) volume can now be controlled at runtime
30    
31      * MIDI driver:
32        - dispatch bank select (MSB and LSB) messages
33    
34      * Gigasampler format engine:
35        - if a filter is used and EG2 finishes before EG1, let the voice
36          die when EG2 has finished (this fixes a problem with clicks and
37          voice starvation for some gigs)
38        - playback is no longer disabled during instrument loading
39        - all notes playing on a channel that changes its instrument keep
40          playing with the old instrument until they get a note off
41          command
42        - EG fix: a release value of zero could cause noises or crash
43        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
44    
45      * Bug fixes:
46        - fixed crash occurring on certain LSCP scripts (Bug 39)
47        - another thread safety fix for lscp "load engine" and "set
48          channel audio output device"
49    
50    Version 0.4.0 (24 November 2006)
51    
52      * packaging changes:
53        - changed deprecated copyright attribute to license; added ldconfig
54          to post-(un)install steps; added devel package for liblinuxsampler;
55          to linuxsampler.spec (RPM)
56        - install necessary development header files for allowing 3rd party
57          applications to link against liblinuxsampler
58        - liblinuxsampler's API documentation can be generated with 'make docs'
59          (Doxygen required)
60        - added benchmark to automatically detect the best triangle LFO
61          implementation (currently either an integer math solution or a
62          di-harmonic approximation), automatic detection can be overriden
63          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
64          configure script argument though (mandatory for cross-compilation)
65        - do not automatically pick optimized gcc flags if the user already
66          provided some on his own (as CXXFLAGS)
67        - added compile time option to disable processing of All-Notes-Off MIDI
68          messages
69        - added compile time options to allow disabling the various audio and
70          MIDI drivers
71        - fixed automatic GCC CPU switch detection on PPC
72          (patch by Ebrahim Mayat)
73    
74      * Gigasampler format engine:
75        - extensive synthesis optimization
76          (reimplementation of EGs and LFO(s), removed synthesis parameter
77          prerendering and the synthesis parameter matrix in general, splitting
78          each audio fragment into subfragments now where each subfragment uses
79          constant pitch and filter coefficients. The volume coefficient is
80          linearly interpolated inside a subfragment, unless
81          --disable-interpolate-volume is set.)
82        - fine tuning of the EG modulation parameters
83        - improved filter cutoff calculation by adding support for the
84          following gig parameters: Cutoff freq (used when no cutoff
85          controller is defined), Control invert, Minimum cutoff, Velocity
86          curve and Velocity range. The keyboard tracking now scales
87          cutoff frequency instead of resonance.
88        - added support for gig parameter Resonance.
89        - fixed bug in sysex handling (patch by Juan Linietsky)
90        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
91          which can be overridden with --enable-global-attenuation
92        - EG fixes: made the length of "attack hold" stage more
93          accurate. Release stage can now start before attack stage
94          ends. Cancel release didn't work when sustain was zero. Attack
95          time now has a minimal value to prevent clicks.
96        - fixed pitch changes larger than one octave
97        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
98        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
99          all modes can be altered via standard GM messages, that is CC5 for
100          altering portamento time, CC65 for enabling / disabling portamento
101          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
102        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
103          parameter) and crossfade
104        - added support for the "attenuation controller threshold" gig
105          parameter
106        - added smoothing of volume changes caused by control change
107          messages
108        - sample loop parameters are now taken from the DimensionRegion
109          instead of the wave chunk
110        - fixed keyswitching for v3 gigs with a number of keyswitch splits
111          not equal to a power of two
112        - reimplementation of the filter algorithm. The new filter is more
113          accurate and supports all gig filter types, including bandreject
114          and lowpass turbo.
115        - real support for 24 bit samples - samples are not truncated to
116          16 bits anymore
117        - support for aftertouch (channel pressure, not polyphonic
118          aftertouch)
119        - LFO1 behaviour fixed (dampening from max volume instead of
120          amplifying from 0)
121    
122      * LSCP server:
123        - fixed application exit on broken pipe error (fixes bug #20)
124        - fixed the notification messages delay due to lack of
125          network activity (fixes bug #26)
126        - fixed parser bug which occured on space(s) within device parameters
127          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
128    
129      * audio driver:
130        - added aRts audio output driver (by no means RT safe)
131    
132      * MIDI driver:
133        - fixed legacy sysex code which caused dispatching of MIDI SysEx
134          messages several times instead of once
135        - API extension for MIDI drivers which already supply exact time stamps
136          for events (i.e. for offline rendering based MIDI drivers)
137        - added checks for bad MIDI data
138    
139      * linuxsampler application:
140        - show available sampler engine types on startup
141    
142      * general changes:
143        - support for muting sampler channels and solo mode of the same, two new
144          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
145          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
146          introduced for this, the behavior is the same like on a mixer console
147          (patch by Grigor Iliev, a bit adjusted). Also added configure option
148          --enable-process-muted-channels which can be used to enable the
149          processing of muted channels.
150        - support for sostenuto pedal
151        - support for monitoring the total number of active voices
152          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
153          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
154        - fixed some memory management errors
155        - fixed some concurrency problems that could lead to crashes when
156          LSCP commands were executed
157        - fixed crash when instrument loading failed previously on the same
158          sampler channel (fixes bug #36)
159    
160    Version 0.3.3 (15 July 2005)
161    
162      * packaging changes:
163        - fixed compilation with gcc 4.0
164    
165      * Gigasampler format engine:
166        - LFO preprocessing was performed even though the respective LFO was
167          disabled by the instrument patch (minor efficiency fix)
168        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
169          for volume ramp downs in the same fragment (needed for current voice
170          stealing implementation) then simply inform the user with a warning
171          about possible click sounds and reduce the volume ramp down
172          appropriately instead of cancelling the audio device connection
173    
174    Version 0.3.2 (24 June 2005)
175    
176    * packaging changes:    * packaging changes:
177      - updated autotools build files to compile on OS X      - updated autotools build files to compile on OS X
178        (conditional compilation of CoreMIDI and MidiShare drivers)        (conditional compilation of CoreMIDI and MidiShare drivers)
# Line 22  Version CVS HEAD (?) Line 195  Version CVS HEAD (?)
195        instead of when the respective voice is actually launched        instead of when the respective voice is actually launched
196        (fixes undefined behavior if stolen voices belonged to a key group -        (fixes undefined behavior if stolen voices belonged to a key group -
197        this case was followed by a "killed voice survived" error message)        this case was followed by a "killed voice survived" error message)
198        - fixed minor issue with null/silence samples
199          (those stole voices even though they don't need a voice at all which
200          resulted in "voice stealing didn't work out" messages)
201        - don't reset volume, pan, pitch and MIDI controller values on
202          instrument or audio output device change
203    
204    * LSCP server:    * LSCP server:
205      - fixed some crashes (patch by Grigor Iliev, fixes #19)      - fixed some crashes (patch by Grigor Iliev, fixes #19)
206      - fixed LSCP event "CHANNEL_INFO" notification      - fixed LSCP event "CHANNEL_INFO" notification
207        (e.g. did not notify on volume changes)        (e.g. did not notify on volume changes or MIDI program change events)
208    
209    * linuxsampler application:    * linuxsampler application:
210      - added command line parameters --lscp-addr and --lscp-port to override      - added command line parameters --lscp-addr and --lscp-port to override

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