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revision 630 by persson, Sat Jun 11 14:51:49 2005 UTC revision 1212 by schoenebeck, Tue May 29 23:59:36 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    
52      * MIDI driver:
53        - dispatch bank select (MSB and LSB) messages
54    
55      * audio driver:
56        - the ALSA audio output driver parameters now reflect the correct
57          parameter value ranges for the respective selected sound card
58          (patch by Till Wimmer, a bit fixed and extended)
59    
60      * Gigasampler format engine:
61        - if a filter is used and EG2 finishes before EG1, let the voice
62          die when EG2 has finished (this fixes a problem with clicks and
63          voice starvation for some gigs)
64        - playback is no longer disabled during instrument loading
65        - all notes playing on a channel that changes its instrument keep
66          playing with the old instrument until they get a note off
67          command
68        - EG fix: a release value of zero could cause noises or crash
69        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
70        - EG fine tuning: when attack is zero the EG starts at a level
71          above max sustain level, which means that there is a decay phase
72          even if sustain is 100%
73        - more EG fixes: the level could sometimes go below zero and cause
74          noises or crashes
75        - minor fix of EGDecay (patch by Toshi Nagata)
76        - fixed compiler error when --enable-override-filter-type was
77          supplied to the configure script (fixes #46)
78    
79      * Bug fixes:
80        - fixed crash occurring on certain LSCP scripts (Bug 39)
81        - another thread safety fix for lscp "load engine" and "set
82          channel audio output device"
83    
84    Version 0.4.0 (24 November 2006)
85    
86      * packaging changes:
87        - changed deprecated copyright attribute to license; added ldconfig
88          to post-(un)install steps; added devel package for liblinuxsampler;
89          to linuxsampler.spec (RPM)
90        - install necessary development header files for allowing 3rd party
91          applications to link against liblinuxsampler
92        - liblinuxsampler's API documentation can be generated with 'make docs'
93          (Doxygen required)
94        - added benchmark to automatically detect the best triangle LFO
95          implementation (currently either an integer math solution or a
96          di-harmonic approximation), automatic detection can be overriden
97          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
98          configure script argument though (mandatory for cross-compilation)
99        - do not automatically pick optimized gcc flags if the user already
100          provided some on his own (as CXXFLAGS)
101        - added compile time option to disable processing of All-Notes-Off MIDI
102          messages
103        - added compile time options to allow disabling the various audio and
104          MIDI drivers
105        - fixed automatic GCC CPU switch detection on PPC
106          (patch by Ebrahim Mayat)
107    
108      * Gigasampler format engine:
109        - extensive synthesis optimization
110          (reimplementation of EGs and LFO(s), removed synthesis parameter
111          prerendering and the synthesis parameter matrix in general, splitting
112          each audio fragment into subfragments now where each subfragment uses
113          constant pitch and filter coefficients. The volume coefficient is
114          linearly interpolated inside a subfragment, unless
115          --disable-interpolate-volume is set.)
116        - fine tuning of the EG modulation parameters
117        - improved filter cutoff calculation by adding support for the
118          following gig parameters: Cutoff freq (used when no cutoff
119          controller is defined), Control invert, Minimum cutoff, Velocity
120          curve and Velocity range. The keyboard tracking now scales
121          cutoff frequency instead of resonance.
122        - added support for gig parameter Resonance.
123        - fixed bug in sysex handling (patch by Juan Linietsky)
124        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
125          which can be overridden with --enable-global-attenuation
126        - EG fixes: made the length of "attack hold" stage more
127          accurate. Release stage can now start before attack stage
128          ends. Cancel release didn't work when sustain was zero. Attack
129          time now has a minimal value to prevent clicks.
130        - fixed pitch changes larger than one octave
131        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
132        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
133          all modes can be altered via standard GM messages, that is CC5 for
134          altering portamento time, CC65 for enabling / disabling portamento
135          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
136        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
137          parameter) and crossfade
138        - added support for the "attenuation controller threshold" gig
139          parameter
140        - added smoothing of volume changes caused by control change
141          messages
142        - sample loop parameters are now taken from the DimensionRegion
143          instead of the wave chunk
144        - fixed keyswitching for v3 gigs with a number of keyswitch splits
145          not equal to a power of two
146        - reimplementation of the filter algorithm. The new filter is more
147          accurate and supports all gig filter types, including bandreject
148          and lowpass turbo.
149        - real support for 24 bit samples - samples are not truncated to
150          16 bits anymore
151        - support for aftertouch (channel pressure, not polyphonic
152          aftertouch)
153        - LFO1 behaviour fixed (dampening from max volume instead of
154          amplifying from 0)
155    
156      * LSCP server:
157        - fixed application exit on broken pipe error (fixes bug #20)
158        - fixed the notification messages delay due to lack of
159          network activity (fixes bug #26)
160        - fixed parser bug which occured on space(s) within device parameters
161          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
162    
163      * audio driver:
164        - added aRts audio output driver (by no means RT safe)
165    
166      * MIDI driver:
167        - fixed legacy sysex code which caused dispatching of MIDI SysEx
168          messages several times instead of once
169        - API extension for MIDI drivers which already supply exact time stamps
170          for events (i.e. for offline rendering based MIDI drivers)
171        - added checks for bad MIDI data
172    
173      * linuxsampler application:
174        - show available sampler engine types on startup
175    
176      * general changes:
177        - support for muting sampler channels and solo mode of the same, two new
178          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
179          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
180          introduced for this, the behavior is the same like on a mixer console
181          (patch by Grigor Iliev, a bit adjusted). Also added configure option
182          --enable-process-muted-channels which can be used to enable the
183          processing of muted channels.
184        - support for sostenuto pedal
185        - support for monitoring the total number of active voices
186          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
187          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
188        - fixed some memory management errors
189        - fixed some concurrency problems that could lead to crashes when
190          LSCP commands were executed
191        - fixed crash when instrument loading failed previously on the same
192          sampler channel (fixes bug #36)
193    
194    Version 0.3.3 (15 July 2005)
195    
196      * packaging changes:
197        - fixed compilation with gcc 4.0
198    
199      * Gigasampler format engine:
200        - LFO preprocessing was performed even though the respective LFO was
201          disabled by the instrument patch (minor efficiency fix)
202        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
203          for volume ramp downs in the same fragment (needed for current voice
204          stealing implementation) then simply inform the user with a warning
205          about possible click sounds and reduce the volume ramp down
206          appropriately instead of cancelling the audio device connection
207    
208    Version 0.3.2 (24 June 2005)
209    
210      * packaging changes:
211      - updated autotools build files to compile on OS X      - updated autotools build files to compile on OS X
212        (conditional compilation of CoreMIDI and MidiShare drivers)        (conditional compilation of CoreMIDI and MidiShare drivers)
213      - hand-crafted assembly optimization code can be disabled with      - hand-crafted assembly optimization code can be disabled with
214        './configure --disable-asm' (definitely not recommended)        './configure --disable-asm' (definitely not recommended)
215    * support for the gig parameters for "release velocity response"      - fixed 'make dist' rule to include all necessary files
216      curves      - require automake (>= 1.5) for 'make -f Makefile.cvs'
217    * fine tuning of the EGADSR envelope        (due to 'dist-bzip2' automake option)
218    
219      * Gigasampler format engine:
220        - support for the gig parameters for "release velocity response" curves
221        - fine tuning of the EGADSR envelope
222        - volume of release triggered samples now depends on note-on velocity,
223          note length and gig parameter "release trigger decay" instead of
224          note-off velocity.
225        - revised voice stealing
226          (fixes crash and endless loop caused by voice stealing)
227        - don't reset scale tuning on instrument or audio output device change
228        - handle key group conflicts right at the beginning of each fragment
229          instead of when the respective voice is actually launched
230          (fixes undefined behavior if stolen voices belonged to a key group -
231          this case was followed by a "killed voice survived" error message)
232        - fixed minor issue with null/silence samples
233          (those stole voices even though they don't need a voice at all which
234          resulted in "voice stealing didn't work out" messages)
235        - don't reset volume, pan, pitch and MIDI controller values on
236          instrument or audio output device change
237    
238    * LSCP server:    * LSCP server:
239      - fixed some crashes (patch by Grigor Iliev, fixes #19)      - fixed some crashes (patch by Grigor Iliev, fixes #19)
240    * volume of release triggered samples now depends on note-on      - fixed LSCP event "CHANNEL_INFO" notification
241      velocity, note length and gig parameter "release trigger decay"        (e.g. did not notify on volume changes or MIDI program change events)
242      instead of note-off velocity.  
243      * linuxsampler application:
244        - added command line parameters --lscp-addr and --lscp-port to override
245          default IP address and port of LSCP server
246    
247  Version 0.3.1 (24 May 2005)  Version 0.3.1 (24 May 2005)
248    

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