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revision 630 by persson, Sat Jun 11 14:51:49 2005 UTC revision 1049 by schoenebeck, Wed Feb 28 06:53:42 2007 UTC
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1  Version CVS HEAD (?)  Version CVS HEAD (?)
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
31      * MIDI driver:
32        - dispatch bank select (MSB and LSB) messages
34      * audio driver:
35        - the ALSA audio output driver parameters now reflect the correct
36          parameter value ranges for the respective selected sound card
37          (patch by Till Wimmer, a bit fixed and extended)
39      * Gigasampler format engine:
40        - if a filter is used and EG2 finishes before EG1, let the voice
41          die when EG2 has finished (this fixes a problem with clicks and
42          voice starvation for some gigs)
43        - playback is no longer disabled during instrument loading
44        - all notes playing on a channel that changes its instrument keep
45          playing with the old instrument until they get a note off
46          command
47        - EG fix: a release value of zero could cause noises or crash
48        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
49        - EG fine tuning: when attack is zero the EG starts at a level
50          above max sustain level, which means that there is a decay phase
51          even if sustain is 100%
53      * Bug fixes:
54        - fixed crash occurring on certain LSCP scripts (Bug 39)
55        - another thread safety fix for lscp "load engine" and "set
56          channel audio output device"
58    Version 0.4.0 (24 November 2006)
60      * packaging changes:
61        - changed deprecated copyright attribute to license; added ldconfig
62          to post-(un)install steps; added devel package for liblinuxsampler;
63          to linuxsampler.spec (RPM)
64        - install necessary development header files for allowing 3rd party
65          applications to link against liblinuxsampler
66        - liblinuxsampler's API documentation can be generated with 'make docs'
67          (Doxygen required)
68        - added benchmark to automatically detect the best triangle LFO
69          implementation (currently either an integer math solution or a
70          di-harmonic approximation), automatic detection can be overriden
71          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
72          configure script argument though (mandatory for cross-compilation)
73        - do not automatically pick optimized gcc flags if the user already
74          provided some on his own (as CXXFLAGS)
75        - added compile time option to disable processing of All-Notes-Off MIDI
76          messages
77        - added compile time options to allow disabling the various audio and
78          MIDI drivers
79        - fixed automatic GCC CPU switch detection on PPC
80          (patch by Ebrahim Mayat)
82      * Gigasampler format engine:
83        - extensive synthesis optimization
84          (reimplementation of EGs and LFO(s), removed synthesis parameter
85          prerendering and the synthesis parameter matrix in general, splitting
86          each audio fragment into subfragments now where each subfragment uses
87          constant pitch and filter coefficients. The volume coefficient is
88          linearly interpolated inside a subfragment, unless
89          --disable-interpolate-volume is set.)
90        - fine tuning of the EG modulation parameters
91        - improved filter cutoff calculation by adding support for the
92          following gig parameters: Cutoff freq (used when no cutoff
93          controller is defined), Control invert, Minimum cutoff, Velocity
94          curve and Velocity range. The keyboard tracking now scales
95          cutoff frequency instead of resonance.
96        - added support for gig parameter Resonance.
97        - fixed bug in sysex handling (patch by Juan Linietsky)
98        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
99          which can be overridden with --enable-global-attenuation
100        - EG fixes: made the length of "attack hold" stage more
101          accurate. Release stage can now start before attack stage
102          ends. Cancel release didn't work when sustain was zero. Attack
103          time now has a minimal value to prevent clicks.
104        - fixed pitch changes larger than one octave
105        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
106        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
107          all modes can be altered via standard GM messages, that is CC5 for
108          altering portamento time, CC65 for enabling / disabling portamento
109          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
110        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
111          parameter) and crossfade
112        - added support for the "attenuation controller threshold" gig
113          parameter
114        - added smoothing of volume changes caused by control change
115          messages
116        - sample loop parameters are now taken from the DimensionRegion
117          instead of the wave chunk
118        - fixed keyswitching for v3 gigs with a number of keyswitch splits
119          not equal to a power of two
120        - reimplementation of the filter algorithm. The new filter is more
121          accurate and supports all gig filter types, including bandreject
122          and lowpass turbo.
123        - real support for 24 bit samples - samples are not truncated to
124          16 bits anymore
125        - support for aftertouch (channel pressure, not polyphonic
126          aftertouch)
127        - LFO1 behaviour fixed (dampening from max volume instead of
128          amplifying from 0)
130      * LSCP server:
131        - fixed application exit on broken pipe error (fixes bug #20)
132        - fixed the notification messages delay due to lack of
133          network activity (fixes bug #26)
134        - fixed parser bug which occured on space(s) within device parameters
135          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
137      * audio driver:
138        - added aRts audio output driver (by no means RT safe)
140      * MIDI driver:
141        - fixed legacy sysex code which caused dispatching of MIDI SysEx
142          messages several times instead of once
143        - API extension for MIDI drivers which already supply exact time stamps
144          for events (i.e. for offline rendering based MIDI drivers)
145        - added checks for bad MIDI data
147      * linuxsampler application:
148        - show available sampler engine types on startup
150      * general changes:
151        - support for muting sampler channels and solo mode of the same, two new
152          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
153          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
154          introduced for this, the behavior is the same like on a mixer console
155          (patch by Grigor Iliev, a bit adjusted). Also added configure option
156          --enable-process-muted-channels which can be used to enable the
157          processing of muted channels.
158        - support for sostenuto pedal
159        - support for monitoring the total number of active voices
162        - fixed some memory management errors
163        - fixed some concurrency problems that could lead to crashes when
164          LSCP commands were executed
165        - fixed crash when instrument loading failed previously on the same
166          sampler channel (fixes bug #36)
168    Version 0.3.3 (15 July 2005)
170      * packaging changes:
171        - fixed compilation with gcc 4.0
173      * Gigasampler format engine:
174        - LFO preprocessing was performed even though the respective LFO was
175          disabled by the instrument patch (minor efficiency fix)
176        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
177          for volume ramp downs in the same fragment (needed for current voice
178          stealing implementation) then simply inform the user with a warning
179          about possible click sounds and reduce the volume ramp down
180          appropriately instead of cancelling the audio device connection
182    Version 0.3.2 (24 June 2005)
184    * packaging changes:    * packaging changes:
185      - updated autotools build files to compile on OS X      - updated autotools build files to compile on OS X
186        (conditional compilation of CoreMIDI and MidiShare drivers)        (conditional compilation of CoreMIDI and MidiShare drivers)
187      - hand-crafted assembly optimization code can be disabled with      - hand-crafted assembly optimization code can be disabled with
188        './configure --disable-asm' (definitely not recommended)        './configure --disable-asm' (definitely not recommended)
189    * support for the gig parameters for "release velocity response"      - fixed 'make dist' rule to include all necessary files
190      curves      - require automake (>= 1.5) for 'make -f Makefile.cvs'
191    * fine tuning of the EGADSR envelope        (due to 'dist-bzip2' automake option)
193      * Gigasampler format engine:
194        - support for the gig parameters for "release velocity response" curves
195        - fine tuning of the EGADSR envelope
196        - volume of release triggered samples now depends on note-on velocity,
197          note length and gig parameter "release trigger decay" instead of
198          note-off velocity.
199        - revised voice stealing
200          (fixes crash and endless loop caused by voice stealing)
201        - don't reset scale tuning on instrument or audio output device change
202        - handle key group conflicts right at the beginning of each fragment
203          instead of when the respective voice is actually launched
204          (fixes undefined behavior if stolen voices belonged to a key group -
205          this case was followed by a "killed voice survived" error message)
206        - fixed minor issue with null/silence samples
207          (those stole voices even though they don't need a voice at all which
208          resulted in "voice stealing didn't work out" messages)
209        - don't reset volume, pan, pitch and MIDI controller values on
210          instrument or audio output device change
212    * LSCP server:    * LSCP server:
213      - fixed some crashes (patch by Grigor Iliev, fixes #19)      - fixed some crashes (patch by Grigor Iliev, fixes #19)
214    * volume of release triggered samples now depends on note-on      - fixed LSCP event "CHANNEL_INFO" notification
215      velocity, note length and gig parameter "release trigger decay"        (e.g. did not notify on volume changes or MIDI program change events)
216      instead of note-off velocity.  
217      * linuxsampler application:
218        - added command line parameters --lscp-addr and --lscp-port to override
219          default IP address and port of LSCP server
221  Version 0.3.1 (24 May 2005)  Version 0.3.1 (24 May 2005)

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