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revision 668 by schoenebeck, Mon Jun 20 15:30:47 2005 UTC revision 1305 by iliev, Mon Aug 27 07:51:28 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        - fixed a crash which occurs when reassigning the same engine
108          on a sampler channel with connected MIDI device
109        - fixed a crash which occurs when changing the number of ports of a MIDI
110          device connected to a sampler channel to number less then or equal
111          to the index of the port to which the sampler channel is connected.
112        - The previous bindings were not been disconnected when altering
113          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
114          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
115        - The active stream/voice count statistic was incorrect.
116        - notification events were not been sent for some sampler
117          channel changes
118        - added default min and max values to restrict the number of allowed
119          audio output channels and MIDI input ports
120        - the pcm is now closed when destroying an audio output device
121    
122      * test cases:
123        - updated and fixed (haven't been touched in a while)
124    
125    Version 0.4.0 (24 November 2006)
126    
127      * packaging changes:
128        - changed deprecated copyright attribute to license; added ldconfig
129          to post-(un)install steps; added devel package for liblinuxsampler;
130          to linuxsampler.spec (RPM)
131        - install necessary development header files for allowing 3rd party
132          applications to link against liblinuxsampler
133        - liblinuxsampler's API documentation can be generated with 'make docs'
134          (Doxygen required)
135        - added benchmark to automatically detect the best triangle LFO
136          implementation (currently either an integer math solution or a
137          di-harmonic approximation), automatic detection can be overriden
138          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
139          configure script argument though (mandatory for cross-compilation)
140        - do not automatically pick optimized gcc flags if the user already
141          provided some on his own (as CXXFLAGS)
142        - added compile time option to disable processing of All-Notes-Off MIDI
143          messages
144        - added compile time options to allow disabling the various audio and
145          MIDI drivers
146        - fixed automatic GCC CPU switch detection on PPC
147          (patch by Ebrahim Mayat)
148    
149      * Gigasampler format engine:
150        - extensive synthesis optimization
151          (reimplementation of EGs and LFO(s), removed synthesis parameter
152          prerendering and the synthesis parameter matrix in general, splitting
153          each audio fragment into subfragments now where each subfragment uses
154          constant pitch and filter coefficients. The volume coefficient is
155          linearly interpolated inside a subfragment, unless
156          --disable-interpolate-volume is set.)
157        - fine tuning of the EG modulation parameters
158        - improved filter cutoff calculation by adding support for the
159          following gig parameters: Cutoff freq (used when no cutoff
160          controller is defined), Control invert, Minimum cutoff, Velocity
161          curve and Velocity range. The keyboard tracking now scales
162          cutoff frequency instead of resonance.
163        - added support for gig parameter Resonance.
164        - fixed bug in sysex handling (patch by Juan Linietsky)
165        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
166          which can be overridden with --enable-global-attenuation
167        - EG fixes: made the length of "attack hold" stage more
168          accurate. Release stage can now start before attack stage
169          ends. Cancel release didn't work when sustain was zero. Attack
170          time now has a minimal value to prevent clicks.
171        - fixed pitch changes larger than one octave
172        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
173        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
174          all modes can be altered via standard GM messages, that is CC5 for
175          altering portamento time, CC65 for enabling / disabling portamento
176          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
177        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
178          parameter) and crossfade
179        - added support for the "attenuation controller threshold" gig
180          parameter
181        - added smoothing of volume changes caused by control change
182          messages
183        - sample loop parameters are now taken from the DimensionRegion
184          instead of the wave chunk
185        - fixed keyswitching for v3 gigs with a number of keyswitch splits
186          not equal to a power of two
187        - reimplementation of the filter algorithm. The new filter is more
188          accurate and supports all gig filter types, including bandreject
189          and lowpass turbo.
190        - real support for 24 bit samples - samples are not truncated to
191          16 bits anymore
192        - support for aftertouch (channel pressure, not polyphonic
193          aftertouch)
194        - LFO1 behaviour fixed (dampening from max volume instead of
195          amplifying from 0)
196    
197      * LSCP server:
198        - fixed application exit on broken pipe error (fixes bug #20)
199        - fixed the notification messages delay due to lack of
200          network activity (fixes bug #26)
201        - fixed parser bug which occured on space(s) within device parameters
202          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
203    
204      * audio driver:
205        - added aRts audio output driver (by no means RT safe)
206    
207      * MIDI driver:
208        - fixed legacy sysex code which caused dispatching of MIDI SysEx
209          messages several times instead of once
210        - API extension for MIDI drivers which already supply exact time stamps
211          for events (i.e. for offline rendering based MIDI drivers)
212        - added checks for bad MIDI data
213    
214      * linuxsampler application:
215        - show available sampler engine types on startup
216    
217      * general changes:
218        - support for muting sampler channels and solo mode of the same, two new
219          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
220          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
221          introduced for this, the behavior is the same like on a mixer console
222          (patch by Grigor Iliev, a bit adjusted). Also added configure option
223          --enable-process-muted-channels which can be used to enable the
224          processing of muted channels.
225        - support for sostenuto pedal
226        - support for monitoring the total number of active voices
227          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
228          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
229        - fixed some memory management errors
230        - fixed some concurrency problems that could lead to crashes when
231          LSCP commands were executed
232        - fixed crash when instrument loading failed previously on the same
233          sampler channel (fixes bug #36)
234    
235    Version 0.3.3 (15 July 2005)
236    
237      * packaging changes:
238        - fixed compilation with gcc 4.0
239    
240      * Gigasampler format engine:
241        - LFO preprocessing was performed even though the respective LFO was
242          disabled by the instrument patch (minor efficiency fix)
243        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
244          for volume ramp downs in the same fragment (needed for current voice
245          stealing implementation) then simply inform the user with a warning
246          about possible click sounds and reduce the volume ramp down
247          appropriately instead of cancelling the audio device connection
248    
249    Version 0.3.2 (24 June 2005)
250    
251      * packaging changes:
252      - updated autotools build files to compile on OS X      - updated autotools build files to compile on OS X
253        (conditional compilation of CoreMIDI and MidiShare drivers)        (conditional compilation of CoreMIDI and MidiShare drivers)
254      - hand-crafted assembly optimization code can be disabled with      - hand-crafted assembly optimization code can be disabled with
# Line 22  Version CVS HEAD (?) Line 270  Version CVS HEAD (?)
270        instead of when the respective voice is actually launched        instead of when the respective voice is actually launched
271        (fixes undefined behavior if stolen voices belonged to a key group -        (fixes undefined behavior if stolen voices belonged to a key group -
272        this case was followed by a "killed voice survived" error message)        this case was followed by a "killed voice survived" error message)
273        - fixed minor issue with null/silence samples
274          (those stole voices even though they don't need a voice at all which
275          resulted in "voice stealing didn't work out" messages)
276        - don't reset volume, pan, pitch and MIDI controller values on
277          instrument or audio output device change
278    
279    * LSCP server:    * LSCP server:
280      - fixed some crashes (patch by Grigor Iliev, fixes #19)      - fixed some crashes (patch by Grigor Iliev, fixes #19)
281      - fixed LSCP event "CHANNEL_INFO" notification      - fixed LSCP event "CHANNEL_INFO" notification
282        (e.g. did not notify on volume changes)        (e.g. did not notify on volume changes or MIDI program change events)
283    
284    * linuxsampler application:    * linuxsampler application:
285      - added command line parameters --lscp-addr and --lscp-port to override      - added command line parameters --lscp-addr and --lscp-port to override

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