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revision 617 by schoenebeck, Wed Jun 8 21:00:06 2005 UTC revision 1149 by schoenebeck, Sat Apr 7 22:32:47 2007 UTC
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1  Version CVS HEAD (?)  Version CVS HEAD (?)
2    
3    * packaging changes:    * 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        - fixed compilation errors regarding OSX
36          (patch by Toshi Nagata)
37    
38      * MIDI driver:
39        - dispatch bank select (MSB and LSB) messages
40    
41      * audio driver:
42        - the ALSA audio output driver parameters now reflect the correct
43          parameter value ranges for the respective selected sound card
44          (patch by Till Wimmer, a bit fixed and extended)
45    
46      * Gigasampler format engine:
47        - if a filter is used and EG2 finishes before EG1, let the voice
48          die when EG2 has finished (this fixes a problem with clicks and
49          voice starvation for some gigs)
50        - playback is no longer disabled during instrument loading
51        - all notes playing on a channel that changes its instrument keep
52          playing with the old instrument until they get a note off
53          command
54        - EG fix: a release value of zero could cause noises or crash
55        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
56        - EG fine tuning: when attack is zero the EG starts at a level
57          above max sustain level, which means that there is a decay phase
58          even if sustain is 100%
59        - more EG fixes: the level could sometimes go below zero and cause
60          noises or crashes
61        - minor fix of EGDecay (patch by Toshi Nagata)
62    
63      * Bug fixes:
64        - fixed crash occurring on certain LSCP scripts (Bug 39)
65        - another thread safety fix for lscp "load engine" and "set
66          channel audio output device"
67    
68    Version 0.4.0 (24 November 2006)
69    
70      * packaging changes:
71        - changed deprecated copyright attribute to license; added ldconfig
72          to post-(un)install steps; added devel package for liblinuxsampler;
73          to linuxsampler.spec (RPM)
74        - install necessary development header files for allowing 3rd party
75          applications to link against liblinuxsampler
76        - liblinuxsampler's API documentation can be generated with 'make docs'
77          (Doxygen required)
78        - added benchmark to automatically detect the best triangle LFO
79          implementation (currently either an integer math solution or a
80          di-harmonic approximation), automatic detection can be overriden
81          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
82          configure script argument though (mandatory for cross-compilation)
83        - do not automatically pick optimized gcc flags if the user already
84          provided some on his own (as CXXFLAGS)
85        - added compile time option to disable processing of All-Notes-Off MIDI
86          messages
87        - added compile time options to allow disabling the various audio and
88          MIDI drivers
89        - fixed automatic GCC CPU switch detection on PPC
90          (patch by Ebrahim Mayat)
91    
92      * Gigasampler format engine:
93        - extensive synthesis optimization
94          (reimplementation of EGs and LFO(s), removed synthesis parameter
95          prerendering and the synthesis parameter matrix in general, splitting
96          each audio fragment into subfragments now where each subfragment uses
97          constant pitch and filter coefficients. The volume coefficient is
98          linearly interpolated inside a subfragment, unless
99          --disable-interpolate-volume is set.)
100        - fine tuning of the EG modulation parameters
101        - improved filter cutoff calculation by adding support for the
102          following gig parameters: Cutoff freq (used when no cutoff
103          controller is defined), Control invert, Minimum cutoff, Velocity
104          curve and Velocity range. The keyboard tracking now scales
105          cutoff frequency instead of resonance.
106        - added support for gig parameter Resonance.
107        - fixed bug in sysex handling (patch by Juan Linietsky)
108        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
109          which can be overridden with --enable-global-attenuation
110        - EG fixes: made the length of "attack hold" stage more
111          accurate. Release stage can now start before attack stage
112          ends. Cancel release didn't work when sustain was zero. Attack
113          time now has a minimal value to prevent clicks.
114        - fixed pitch changes larger than one octave
115        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
116        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
117          all modes can be altered via standard GM messages, that is CC5 for
118          altering portamento time, CC65 for enabling / disabling portamento
119          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
120        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
121          parameter) and crossfade
122        - added support for the "attenuation controller threshold" gig
123          parameter
124        - added smoothing of volume changes caused by control change
125          messages
126        - sample loop parameters are now taken from the DimensionRegion
127          instead of the wave chunk
128        - fixed keyswitching for v3 gigs with a number of keyswitch splits
129          not equal to a power of two
130        - reimplementation of the filter algorithm. The new filter is more
131          accurate and supports all gig filter types, including bandreject
132          and lowpass turbo.
133        - real support for 24 bit samples - samples are not truncated to
134          16 bits anymore
135        - support for aftertouch (channel pressure, not polyphonic
136          aftertouch)
137        - LFO1 behaviour fixed (dampening from max volume instead of
138          amplifying from 0)
139    
140      * LSCP server:
141        - fixed application exit on broken pipe error (fixes bug #20)
142        - fixed the notification messages delay due to lack of
143          network activity (fixes bug #26)
144        - fixed parser bug which occured on space(s) within device parameters
145          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
146    
147      * audio driver:
148        - added aRts audio output driver (by no means RT safe)
149    
150      * MIDI driver:
151        - fixed legacy sysex code which caused dispatching of MIDI SysEx
152          messages several times instead of once
153        - API extension for MIDI drivers which already supply exact time stamps
154          for events (i.e. for offline rendering based MIDI drivers)
155        - added checks for bad MIDI data
156    
157      * linuxsampler application:
158        - show available sampler engine types on startup
159    
160      * general changes:
161        - support for muting sampler channels and solo mode of the same, two new
162          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
163          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
164          introduced for this, the behavior is the same like on a mixer console
165          (patch by Grigor Iliev, a bit adjusted). Also added configure option
166          --enable-process-muted-channels which can be used to enable the
167          processing of muted channels.
168        - support for sostenuto pedal
169        - support for monitoring the total number of active voices
170          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
171          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
172        - fixed some memory management errors
173        - fixed some concurrency problems that could lead to crashes when
174          LSCP commands were executed
175        - fixed crash when instrument loading failed previously on the same
176          sampler channel (fixes bug #36)
177    
178    Version 0.3.3 (15 July 2005)
179    
180      * packaging changes:
181        - fixed compilation with gcc 4.0
182    
183      * Gigasampler format engine:
184        - LFO preprocessing was performed even though the respective LFO was
185          disabled by the instrument patch (minor efficiency fix)
186        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
187          for volume ramp downs in the same fragment (needed for current voice
188          stealing implementation) then simply inform the user with a warning
189          about possible click sounds and reduce the volume ramp down
190          appropriately instead of cancelling the audio device connection
191    
192    Version 0.3.2 (24 June 2005)
193    
194      * packaging changes:
195      - updated autotools build files to compile on OS X      - updated autotools build files to compile on OS X
196        (conditional compilation of CoreMIDI and MidiShare drivers)        (conditional compilation of CoreMIDI and MidiShare drivers)
197      - hand-crafted assembly optimization code can be disabled with      - hand-crafted assembly optimization code can be disabled with
198        './configure --disable-asm' (definitely not recommended)        './configure --disable-asm' (definitely not recommended)
199    * support for the gig parameters for "release velocity response"      - fixed 'make dist' rule to include all necessary files
200      curves      - require automake (>= 1.5) for 'make -f Makefile.cvs'
201    * fine tuning of the EGADSR envelope        (due to 'dist-bzip2' automake option)
202    
203      * Gigasampler format engine:
204        - support for the gig parameters for "release velocity response" curves
205        - fine tuning of the EGADSR envelope
206        - volume of release triggered samples now depends on note-on velocity,
207          note length and gig parameter "release trigger decay" instead of
208          note-off velocity.
209        - revised voice stealing
210          (fixes crash and endless loop caused by voice stealing)
211        - don't reset scale tuning on instrument or audio output device change
212        - handle key group conflicts right at the beginning of each fragment
213          instead of when the respective voice is actually launched
214          (fixes undefined behavior if stolen voices belonged to a key group -
215          this case was followed by a "killed voice survived" error message)
216        - fixed minor issue with null/silence samples
217          (those stole voices even though they don't need a voice at all which
218          resulted in "voice stealing didn't work out" messages)
219        - don't reset volume, pan, pitch and MIDI controller values on
220          instrument or audio output device change
221    
222      * LSCP server:
223        - fixed some crashes (patch by Grigor Iliev, fixes #19)
224        - fixed LSCP event "CHANNEL_INFO" notification
225          (e.g. did not notify on volume changes or MIDI program change events)
226    
227      * linuxsampler application:
228        - added command line parameters --lscp-addr and --lscp-port to override
229          default IP address and port of LSCP server
230    
231  Version 0.3.1 (24 May 2005)  Version 0.3.1 (24 May 2005)
232    

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