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revision 609 by schoenebeck, Sat Jun 4 17:49:12 2005 UTC revision 1147 by persson, Tue Apr 3 17:39:52 2007 UTC
# Line 1  Line 1 
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    
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        - more EG fixes: the level could sometimes go below zero and cause
58          noises or crashes
59    
60      * Bug fixes:
61        - fixed crash occurring on certain LSCP scripts (Bug 39)
62        - another thread safety fix for lscp "load engine" and "set
63          channel audio output device"
64    
65    Version 0.4.0 (24 November 2006)
66    
67      * packaging changes:
68        - changed deprecated copyright attribute to license; added ldconfig
69          to post-(un)install steps; added devel package for liblinuxsampler;
70          to linuxsampler.spec (RPM)
71        - install necessary development header files for allowing 3rd party
72          applications to link against liblinuxsampler
73        - liblinuxsampler's API documentation can be generated with 'make docs'
74          (Doxygen required)
75        - added benchmark to automatically detect the best triangle LFO
76          implementation (currently either an integer math solution or a
77          di-harmonic approximation), automatic detection can be overriden
78          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
79          configure script argument though (mandatory for cross-compilation)
80        - do not automatically pick optimized gcc flags if the user already
81          provided some on his own (as CXXFLAGS)
82        - added compile time option to disable processing of All-Notes-Off MIDI
83          messages
84        - added compile time options to allow disabling the various audio and
85          MIDI drivers
86        - fixed automatic GCC CPU switch detection on PPC
87          (patch by Ebrahim Mayat)
88    
89      * Gigasampler format engine:
90        - extensive synthesis optimization
91          (reimplementation of EGs and LFO(s), removed synthesis parameter
92          prerendering and the synthesis parameter matrix in general, splitting
93          each audio fragment into subfragments now where each subfragment uses
94          constant pitch and filter coefficients. The volume coefficient is
95          linearly interpolated inside a subfragment, unless
96          --disable-interpolate-volume is set.)
97        - fine tuning of the EG modulation parameters
98        - improved filter cutoff calculation by adding support for the
99          following gig parameters: Cutoff freq (used when no cutoff
100          controller is defined), Control invert, Minimum cutoff, Velocity
101          curve and Velocity range. The keyboard tracking now scales
102          cutoff frequency instead of resonance.
103        - added support for gig parameter Resonance.
104        - fixed bug in sysex handling (patch by Juan Linietsky)
105        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
106          which can be overridden with --enable-global-attenuation
107        - EG fixes: made the length of "attack hold" stage more
108          accurate. Release stage can now start before attack stage
109          ends. Cancel release didn't work when sustain was zero. Attack
110          time now has a minimal value to prevent clicks.
111        - fixed pitch changes larger than one octave
112        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
113        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
114          all modes can be altered via standard GM messages, that is CC5 for
115          altering portamento time, CC65 for enabling / disabling portamento
116          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
117        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
118          parameter) and crossfade
119        - added support for the "attenuation controller threshold" gig
120          parameter
121        - added smoothing of volume changes caused by control change
122          messages
123        - sample loop parameters are now taken from the DimensionRegion
124          instead of the wave chunk
125        - fixed keyswitching for v3 gigs with a number of keyswitch splits
126          not equal to a power of two
127        - reimplementation of the filter algorithm. The new filter is more
128          accurate and supports all gig filter types, including bandreject
129          and lowpass turbo.
130        - real support for 24 bit samples - samples are not truncated to
131          16 bits anymore
132        - support for aftertouch (channel pressure, not polyphonic
133          aftertouch)
134        - LFO1 behaviour fixed (dampening from max volume instead of
135          amplifying from 0)
136    
137      * LSCP server:
138        - fixed application exit on broken pipe error (fixes bug #20)
139        - fixed the notification messages delay due to lack of
140          network activity (fixes bug #26)
141        - fixed parser bug which occured on space(s) within device parameters
142          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
143    
144      * audio driver:
145        - added aRts audio output driver (by no means RT safe)
146    
147      * MIDI driver:
148        - fixed legacy sysex code which caused dispatching of MIDI SysEx
149          messages several times instead of once
150        - API extension for MIDI drivers which already supply exact time stamps
151          for events (i.e. for offline rendering based MIDI drivers)
152        - added checks for bad MIDI data
153    
154      * linuxsampler application:
155        - show available sampler engine types on startup
156    
157      * general changes:
158        - support for muting sampler channels and solo mode of the same, two new
159          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
160          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
161          introduced for this, the behavior is the same like on a mixer console
162          (patch by Grigor Iliev, a bit adjusted). Also added configure option
163          --enable-process-muted-channels which can be used to enable the
164          processing of muted channels.
165        - support for sostenuto pedal
166        - support for monitoring the total number of active voices
167          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
168          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
169        - fixed some memory management errors
170        - fixed some concurrency problems that could lead to crashes when
171          LSCP commands were executed
172        - fixed crash when instrument loading failed previously on the same
173          sampler channel (fixes bug #36)
174    
175    Version 0.3.3 (15 July 2005)
176    
177      * packaging changes:
178        - fixed compilation with gcc 4.0
179    
180      * Gigasampler format engine:
181        - LFO preprocessing was performed even though the respective LFO was
182          disabled by the instrument patch (minor efficiency fix)
183        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
184          for volume ramp downs in the same fragment (needed for current voice
185          stealing implementation) then simply inform the user with a warning
186          about possible click sounds and reduce the volume ramp down
187          appropriately instead of cancelling the audio device connection
188    
189    Version 0.3.2 (24 June 2005)
190    
191      * packaging changes:
192      - updated autotools build files to compile on OS X      - updated autotools build files to compile on OS X
193        (conditional compilation of CoreMIDI and MidiShare drivers)        (conditional compilation of CoreMIDI and MidiShare drivers)
194        - hand-crafted assembly optimization code can be disabled with
195          './configure --disable-asm' (definitely not recommended)
196        - fixed 'make dist' rule to include all necessary files
197        - require automake (>= 1.5) for 'make -f Makefile.cvs'
198          (due to 'dist-bzip2' automake option)
199    
200      * Gigasampler format engine:
201        - support for the gig parameters for "release velocity response" curves
202        - fine tuning of the EGADSR envelope
203        - volume of release triggered samples now depends on note-on velocity,
204          note length and gig parameter "release trigger decay" instead of
205          note-off velocity.
206        - revised voice stealing
207          (fixes crash and endless loop caused by voice stealing)
208        - don't reset scale tuning on instrument or audio output device change
209        - handle key group conflicts right at the beginning of each fragment
210          instead of when the respective voice is actually launched
211          (fixes undefined behavior if stolen voices belonged to a key group -
212          this case was followed by a "killed voice survived" error message)
213        - fixed minor issue with null/silence samples
214          (those stole voices even though they don't need a voice at all which
215          resulted in "voice stealing didn't work out" messages)
216        - don't reset volume, pan, pitch and MIDI controller values on
217          instrument or audio output device change
218    
219      * LSCP server:
220        - fixed some crashes (patch by Grigor Iliev, fixes #19)
221        - fixed LSCP event "CHANNEL_INFO" notification
222          (e.g. did not notify on volume changes or MIDI program change events)
223    
224      * linuxsampler application:
225        - added command line parameters --lscp-addr and --lscp-port to override
226          default IP address and port of LSCP server
227    
228  Version 0.3.1 (24 May 2005)  Version 0.3.1 (24 May 2005)
229    

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