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revision 660 by schoenebeck, Fri Jun 17 19:49:30 2005 UTC revision 1259 by schoenebeck, Tue Jun 26 21:41:09 2007 UTC
# Line 1  Line 1 
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        - fixed several issues in fundamental "Thread" class: set scheduling
52          policy and priority on thread level, set a minimum stack size for
53          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
54          threads simply inherited properties of starting thread instead of
55          setting their own policy and priority
56        - minor fix in our automatic stack trace mechanism on crashes, the
57          main process did not wait for the stack trace process to finish
58          its output
59        - fixed some minor memory leaks
60        - reenabled assembly features support, at the moment only for
61          enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
62    
63      * MIDI driver:
64        - dispatch bank select (MSB and LSB) messages
65    
66      * audio driver:
67        - the ALSA audio output driver parameters now reflect the correct
68          parameter value ranges for the respective selected sound card
69          (patch by Till Wimmer, a bit fixed and extended)
70    
71      * Gigasampler format engine:
72        - if a filter is used and EG2 finishes before EG1, let the voice
73          die when EG2 has finished (this fixes a problem with clicks and
74          voice starvation for some gigs)
75        - playback is no longer disabled during instrument loading
76        - all notes playing on a channel that changes its instrument keep
77          playing with the old instrument until they get a note off
78          command
79        - EG fix: a release value of zero could cause noises or crash
80        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
81        - EG fine tuning: when attack is zero the EG starts at a level
82          above max sustain level, which means that there is a decay phase
83          even if sustain is 100%
84        - more EG fixes: the level could sometimes go below zero and cause
85          noises or crashes
86        - minor fix of EGDecay (patch by Toshi Nagata)
87        - fixed compiler error when --enable-override-filter-type was
88          supplied to the configure script (fixes #46)
89    
90      * LSCP server:
91        - fixed compile time error for old Bison versions
92          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
93        - parser now supports extended ASCII character set
94          (up to ASCII code 255, i.e. includes now umlauts and accents)
95        - filename arguments in LSCP commands now allow to use escape
96          sequences, that is directly literal as one of: \', \", \\, \n, \r,
97          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
98          code value like \xf2) (fixes bug #24)
99        - returns verbose syntax errors (line and column where syntax error
100          occured, the unexpected character and the actually expected, possible
101          character(s), the latter only if less than 5 possibilities)
102    
103      * Bug fixes:
104        - fixed crash occurring on certain LSCP scripts (Bug 39)
105        - another thread safety fix for lscp "load engine" and "set
106          channel audio output device"
107    
108      * test cases:
109        - updated and fixed (haven't been touched in a while)
110    
111    Version 0.4.0 (24 November 2006)
112    
113      * packaging changes:
114        - changed deprecated copyright attribute to license; added ldconfig
115          to post-(un)install steps; added devel package for liblinuxsampler;
116          to linuxsampler.spec (RPM)
117        - install necessary development header files for allowing 3rd party
118          applications to link against liblinuxsampler
119        - liblinuxsampler's API documentation can be generated with 'make docs'
120          (Doxygen required)
121        - added benchmark to automatically detect the best triangle LFO
122          implementation (currently either an integer math solution or a
123          di-harmonic approximation), automatic detection can be overriden
124          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
125          configure script argument though (mandatory for cross-compilation)
126        - do not automatically pick optimized gcc flags if the user already
127          provided some on his own (as CXXFLAGS)
128        - added compile time option to disable processing of All-Notes-Off MIDI
129          messages
130        - added compile time options to allow disabling the various audio and
131          MIDI drivers
132        - fixed automatic GCC CPU switch detection on PPC
133          (patch by Ebrahim Mayat)
134    
135      * Gigasampler format engine:
136        - extensive synthesis optimization
137          (reimplementation of EGs and LFO(s), removed synthesis parameter
138          prerendering and the synthesis parameter matrix in general, splitting
139          each audio fragment into subfragments now where each subfragment uses
140          constant pitch and filter coefficients. The volume coefficient is
141          linearly interpolated inside a subfragment, unless
142          --disable-interpolate-volume is set.)
143        - fine tuning of the EG modulation parameters
144        - improved filter cutoff calculation by adding support for the
145          following gig parameters: Cutoff freq (used when no cutoff
146          controller is defined), Control invert, Minimum cutoff, Velocity
147          curve and Velocity range. The keyboard tracking now scales
148          cutoff frequency instead of resonance.
149        - added support for gig parameter Resonance.
150        - fixed bug in sysex handling (patch by Juan Linietsky)
151        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
152          which can be overridden with --enable-global-attenuation
153        - EG fixes: made the length of "attack hold" stage more
154          accurate. Release stage can now start before attack stage
155          ends. Cancel release didn't work when sustain was zero. Attack
156          time now has a minimal value to prevent clicks.
157        - fixed pitch changes larger than one octave
158        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
159        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
160          all modes can be altered via standard GM messages, that is CC5 for
161          altering portamento time, CC65 for enabling / disabling portamento
162          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
163        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
164          parameter) and crossfade
165        - added support for the "attenuation controller threshold" gig
166          parameter
167        - added smoothing of volume changes caused by control change
168          messages
169        - sample loop parameters are now taken from the DimensionRegion
170          instead of the wave chunk
171        - fixed keyswitching for v3 gigs with a number of keyswitch splits
172          not equal to a power of two
173        - reimplementation of the filter algorithm. The new filter is more
174          accurate and supports all gig filter types, including bandreject
175          and lowpass turbo.
176        - real support for 24 bit samples - samples are not truncated to
177          16 bits anymore
178        - support for aftertouch (channel pressure, not polyphonic
179          aftertouch)
180        - LFO1 behaviour fixed (dampening from max volume instead of
181          amplifying from 0)
182    
183      * LSCP server:
184        - fixed application exit on broken pipe error (fixes bug #20)
185        - fixed the notification messages delay due to lack of
186          network activity (fixes bug #26)
187        - fixed parser bug which occured on space(s) within device parameters
188          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
189    
190      * audio driver:
191        - added aRts audio output driver (by no means RT safe)
192    
193      * MIDI driver:
194        - fixed legacy sysex code which caused dispatching of MIDI SysEx
195          messages several times instead of once
196        - API extension for MIDI drivers which already supply exact time stamps
197          for events (i.e. for offline rendering based MIDI drivers)
198        - added checks for bad MIDI data
199    
200      * linuxsampler application:
201        - show available sampler engine types on startup
202    
203      * general changes:
204        - support for muting sampler channels and solo mode of the same, two new
205          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
206          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
207          introduced for this, the behavior is the same like on a mixer console
208          (patch by Grigor Iliev, a bit adjusted). Also added configure option
209          --enable-process-muted-channels which can be used to enable the
210          processing of muted channels.
211        - support for sostenuto pedal
212        - support for monitoring the total number of active voices
213          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
214          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
215        - fixed some memory management errors
216        - fixed some concurrency problems that could lead to crashes when
217          LSCP commands were executed
218        - fixed crash when instrument loading failed previously on the same
219          sampler channel (fixes bug #36)
220    
221    Version 0.3.3 (15 July 2005)
222    
223      * packaging changes:
224        - fixed compilation with gcc 4.0
225    
226      * Gigasampler format engine:
227        - LFO preprocessing was performed even though the respective LFO was
228          disabled by the instrument patch (minor efficiency fix)
229        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
230          for volume ramp downs in the same fragment (needed for current voice
231          stealing implementation) then simply inform the user with a warning
232          about possible click sounds and reduce the volume ramp down
233          appropriately instead of cancelling the audio device connection
234    
235    Version 0.3.2 (24 June 2005)
236    
237      * packaging changes:
238      - updated autotools build files to compile on OS X      - updated autotools build files to compile on OS X
239        (conditional compilation of CoreMIDI and MidiShare drivers)        (conditional compilation of CoreMIDI and MidiShare drivers)
240      - hand-crafted assembly optimization code can be disabled with      - hand-crafted assembly optimization code can be disabled with
# Line 15  Version CVS HEAD (?) Line 249  Version CVS HEAD (?)
249      - volume of release triggered samples now depends on note-on velocity,      - volume of release triggered samples now depends on note-on velocity,
250        note length and gig parameter "release trigger decay" instead of        note length and gig parameter "release trigger decay" instead of
251        note-off velocity.        note-off velocity.
252      - revised voice stealing (fixes crash caused by voice stealing)      - revised voice stealing
253          (fixes crash and endless loop caused by voice stealing)
254      - don't reset scale tuning on instrument or audio output device change      - don't reset scale tuning on instrument or audio output device change
255        - handle key group conflicts right at the beginning of each fragment
256          instead of when the respective voice is actually launched
257          (fixes undefined behavior if stolen voices belonged to a key group -
258          this case was followed by a "killed voice survived" error message)
259        - fixed minor issue with null/silence samples
260          (those stole voices even though they don't need a voice at all which
261          resulted in "voice stealing didn't work out" messages)
262        - don't reset volume, pan, pitch and MIDI controller values on
263          instrument or audio output device change
264    
265    * LSCP server:    * LSCP server:
266      - fixed some crashes (patch by Grigor Iliev, fixes #19)      - fixed some crashes (patch by Grigor Iliev, fixes #19)
267      - fixed LSCP event "CHANNEL_INFO" notification      - fixed LSCP event "CHANNEL_INFO" notification
268        (e.g. did not notify on volume changes)        (e.g. did not notify on volume changes or MIDI program change events)
269    
270      * linuxsampler application:
271        - added command line parameters --lscp-addr and --lscp-port to override
272          default IP address and port of LSCP server
273    
274  Version 0.3.1 (24 May 2005)  Version 0.3.1 (24 May 2005)
275    

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