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revision 685 by persson, Tue Jul 5 19:30:37 2005 UTC revision 1407 by schoenebeck, Fri Oct 12 12:35:58 2007 UTC
# Line 1  Line 1 
1    Version CVS HEAD (?)
2    
3      * 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        - fixed buggy boolean --enable-foo / --disable-foo configure script
13          parameters
14    
15      * general changes:
16        - replaced the old, confusing MIDI program change mechanism by a
17          flexible MIDI instrument mapper which allows to map arbitrary
18          (MIDI bank, MIDI program) pairs with arbitrary
19          (engine type, instrument file, file index) triplets which will be
20          loaded on the respective channel when such MIDI program change
21          messages arrive, beside that, each entry allows to define a life-time
22          strategy for the instrument, so the user can define whether the
23          instrument should i.e. be permanently loaded (to be able to switch
24          quickly among sounds) or i.e. loaded just on demand when the
25          respective program change arrives (to safe RAM space), as well as a
26          global volume factor for each entry, so the user can adjust the volume
27          dynamic of his mapped instrument collection without having to modify
28          the instrument files, also one can manage arbitrary amount of such
29          MIDI instrument maps and assign each sampler channel individually
30          a certain map, so that i.e. separation of normal instruments and
31          drumkits is possible
32        - new notification events for tracking changes to audio/MIDI devices,
33          MIDI instrument maps, MIDI instruments, FX sends, global volume.
34        - sampler was limited to load max. 200 instruments in the background
35          due to a constant size RingBuffer FIFO which is now replaced by a
36          dynamic (unlimited) size std::list FIFO
37        - added FX sends, these allow to route audio signals to arbitrary audio
38          output channels for being processed by external effect processors
39          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
40          controllers
41        - global (sampler wide) volume can now be controlled at runtime
42        - Implemented new, improved notification system
43        - fixed compilation errors regarding OSX
44          (patch by Toshi Nagata)
45        - implemented instruments database
46        - added support for escape sequences to the instruments database
47        - added highly experimental support for on-the-fly instrument editing
48          within the sampler's process (by using instrument editor plugins),
49          you'll notice the new "Registered instrument editors:" message on
50          startup, added a new LSCP command:
51          "EDIT CHANNEL INSTRUMENT <sampler-channel>"
52          to spawn a matching instrument editor for the instrument on the
53          given sampler channel, the plugin path can be overridden at compile
54          time with ./configure --enable-plugin-dir=/some/dir
55        - added experimental code for synchronizing instrument editors hosted
56          in the sampler's process to safely edit instruments while playing
57          without a crash (hopefully) by either suspending single regions
58          wherever possible or if unavoidable whole engine(s)
59        - fixed several issues in fundamental "Thread" class: set scheduling
60          policy and priority on thread level, set a minimum stack size for
61          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
62          threads simply inherited properties of starting thread instead of
63          setting their own policy and priority
64        - minor fix in our automatic stack trace mechanism on crashes, the
65          main process did not wait for the stack trace process to finish
66          its output
67        - fixed some minor memory leaks
68        - reenabled assembly features support, at the moment only for
69          enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
70        - minor assembly fix in x86 features detection (don't use the PIC
71          register, to avoid relocations in the text segment at runtime)
72    
73      * MIDI driver:
74        - dispatch bank select (MSB and LSB) messages
75    
76      * audio driver:
77        - the ALSA audio output driver parameters now reflect the correct
78          parameter value ranges for the respective selected sound card
79          (patch by Till Wimmer, a bit fixed and extended)
80    
81      * Gigasampler format engine:
82        - if a filter is used and EG2 finishes before EG1, let the voice
83          die when EG2 has finished (this fixes a problem with clicks and
84          voice starvation for some gigs)
85        - playback is no longer disabled during instrument loading
86        - all notes playing on a channel that changes its instrument keep
87          playing with the old instrument until they get a note off
88          command
89        - EG fix: a release value of zero could cause noises or crash
90        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
91        - EG fine tuning: when attack is zero the EG starts at a level
92          above max sustain level, which means that there is a decay phase
93          even if sustain is 100%
94        - more EG fixes: the level could sometimes go below zero and cause
95          noises or crashes
96        - minor fix of EGDecay (patch by Toshi Nagata)
97        - fixed compiler error when --enable-override-filter-type was
98          supplied to the configure script (fixes #46)
99        - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
100          instead of a fix value
101        - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
102          127 (solo mode) only kill voices if the respective mode really
103          changed
104    
105      * LSCP server:
106        - fixed compile time error for old Bison versions
107          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
108        - parser now supports extended ASCII character set
109          (up to ASCII code 255, i.e. includes now umlauts and accents)
110        - filename arguments in LSCP commands now allow to use escape
111          sequences, that is directly literal as one of: \', \", \\, \n, \r,
112          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
113          code value like \xf2) (fixes bug #24)
114        - the following LSCP commands now also support escape sequences for at
115          least one of their text-based parameters (i.e. name, description):
116          "ADD MIDI_INSTRUMENT_MAP", "MAP MIDI_INSTRUMENT",
117          "SET MIDI_INSTRUMENT_MAP NAME", "SET FX_SEND NAME", "CREATE FX_SEND",
118          "SET DB_INSTRUMENT_DIRECTORY NAME",
119          "SET DB_INSTRUMENT_DIRECTORY DESCRIPTION", "SET DB_INSTRUMENT NAME",
120          "SET DB_INSTRUMENT DESCRIPTION", "FIND DB_INSTRUMENTS",
121          "FIND DB_INSTRUMENT_DIRECTORIES"
122        - returns verbose syntax errors (line and column where syntax error
123          occured, the unexpected character and the actually expected, possible
124          character(s), the latter only if less than 5 possibilities)
125        - made sure that LSCP syntax is not affected by gigedit locale
126          settings
127        - bugfix regarding strings parameter lists: all comma separated lists
128          of strings were treated as being one string containing commas
129          (fixes #57)
130    
131      * Bug fixes:
132        - fixed crash occurring on certain LSCP scripts (Bug 39)
133        - another thread safety fix for lscp "load engine" and "set
134          channel audio output device"
135        - fixed a crash which occurs when reassigning the same engine
136          on a sampler channel with connected MIDI device
137        - fixed a crash which occurs when changing the number of ports of a MIDI
138          device connected to a sampler channel to number less then or equal
139          to the index of the port to which the sampler channel is connected.
140        - The previous bindings were not been disconnected when altering
141          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
142          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
143        - The active stream/voice count statistic was incorrect.
144        - notification events were not been sent for some sampler
145          channel changes
146        - added default min and max values to restrict the number of allowed
147          audio output channels and MIDI input ports
148        - the connection to the PCM interface is now closed when destroying
149          an audio output device
150        - files with slash in their path or filename could not be loaded
151    
152      * test cases:
153        - updated and fixed (haven't been touched in a while)
154    
155    Version 0.4.0 (24 November 2006)
156    
157      * packaging changes:
158        - changed deprecated copyright attribute to license; added ldconfig
159          to post-(un)install steps; added devel package for liblinuxsampler;
160          to linuxsampler.spec (RPM)
161        - install necessary development header files for allowing 3rd party
162          applications to link against liblinuxsampler
163        - liblinuxsampler's API documentation can be generated with 'make docs'
164          (Doxygen required)
165        - added benchmark to automatically detect the best triangle LFO
166          implementation (currently either an integer math solution or a
167          di-harmonic approximation), automatic detection can be overriden
168          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
169          configure script argument though (mandatory for cross-compilation)
170        - do not automatically pick optimized gcc flags if the user already
171          provided some on his own (as CXXFLAGS)
172        - added compile time option to disable processing of All-Notes-Off MIDI
173          messages
174        - added compile time options to allow disabling the various audio and
175          MIDI drivers
176        - fixed automatic GCC CPU switch detection on PPC
177          (patch by Ebrahim Mayat)
178    
179      * Gigasampler format engine:
180        - extensive synthesis optimization
181          (reimplementation of EGs and LFO(s), removed synthesis parameter
182          prerendering and the synthesis parameter matrix in general, splitting
183          each audio fragment into subfragments now where each subfragment uses
184          constant pitch and filter coefficients. The volume coefficient is
185          linearly interpolated inside a subfragment, unless
186          --disable-interpolate-volume is set.)
187        - fine tuning of the EG modulation parameters
188        - improved filter cutoff calculation by adding support for the
189          following gig parameters: Cutoff freq (used when no cutoff
190          controller is defined), Control invert, Minimum cutoff, Velocity
191          curve and Velocity range. The keyboard tracking now scales
192          cutoff frequency instead of resonance.
193        - added support for gig parameter Resonance.
194        - fixed bug in sysex handling (patch by Juan Linietsky)
195        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
196          which can be overridden with --enable-global-attenuation
197        - EG fixes: made the length of "attack hold" stage more
198          accurate. Release stage can now start before attack stage
199          ends. Cancel release didn't work when sustain was zero. Attack
200          time now has a minimal value to prevent clicks.
201        - fixed pitch changes larger than one octave
202        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
203        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
204          all modes can be altered via standard GM messages, that is CC5 for
205          altering portamento time, CC65 for enabling / disabling portamento
206          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
207        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
208          parameter) and crossfade
209        - added support for the "attenuation controller threshold" gig
210          parameter
211        - added smoothing of volume changes caused by control change
212          messages
213        - sample loop parameters are now taken from the DimensionRegion
214          instead of the wave chunk
215        - fixed keyswitching for v3 gigs with a number of keyswitch splits
216          not equal to a power of two
217        - reimplementation of the filter algorithm. The new filter is more
218          accurate and supports all gig filter types, including bandreject
219          and lowpass turbo.
220        - real support for 24 bit samples - samples are not truncated to
221          16 bits anymore
222        - support for aftertouch (channel pressure, not polyphonic
223          aftertouch)
224        - LFO1 behaviour fixed (dampening from max volume instead of
225          amplifying from 0)
226    
227      * LSCP server:
228        - fixed application exit on broken pipe error (fixes bug #20)
229        - fixed the notification messages delay due to lack of
230          network activity (fixes bug #26)
231        - fixed parser bug which occured on space(s) within device parameters
232          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
233    
234      * audio driver:
235        - added aRts audio output driver (by no means RT safe)
236    
237      * MIDI driver:
238        - fixed legacy sysex code which caused dispatching of MIDI SysEx
239          messages several times instead of once
240        - API extension for MIDI drivers which already supply exact time stamps
241          for events (i.e. for offline rendering based MIDI drivers)
242        - added checks for bad MIDI data
243    
244      * linuxsampler application:
245        - show available sampler engine types on startup
246    
247      * general changes:
248        - support for muting sampler channels and solo mode of the same, two new
249          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
250          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
251          introduced for this, the behavior is the same like on a mixer console
252          (patch by Grigor Iliev, a bit adjusted). Also added configure option
253          --enable-process-muted-channels which can be used to enable the
254          processing of muted channels.
255        - support for sostenuto pedal
256        - support for monitoring the total number of active voices
257          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
258          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
259        - fixed some memory management errors
260        - fixed some concurrency problems that could lead to crashes when
261          LSCP commands were executed
262        - fixed crash when instrument loading failed previously on the same
263          sampler channel (fixes bug #36)
264    
265    Version 0.3.3 (15 July 2005)
266    
267      * packaging changes:
268        - fixed compilation with gcc 4.0
269    
270      * Gigasampler format engine:
271        - LFO preprocessing was performed even though the respective LFO was
272          disabled by the instrument patch (minor efficiency fix)
273        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
274          for volume ramp downs in the same fragment (needed for current voice
275          stealing implementation) then simply inform the user with a warning
276          about possible click sounds and reduce the volume ramp down
277          appropriately instead of cancelling the audio device connection
278    
279  Version 0.3.2 (24 June 2005)  Version 0.3.2 (24 June 2005)
280    
281    * packaging changes:    * packaging changes:
# Line 8  Version 0.3.2 (24 June 2005) Line 286  Version 0.3.2 (24 June 2005)
286      - fixed 'make dist' rule to include all necessary files      - fixed 'make dist' rule to include all necessary files
287      - require automake (>= 1.5) for 'make -f Makefile.cvs'      - require automake (>= 1.5) for 'make -f Makefile.cvs'
288        (due to 'dist-bzip2' automake option)        (due to 'dist-bzip2' automake option)
     - fixed compilation with gcc 4.0  
289    
290    * Gigasampler format engine:    * Gigasampler format engine:
291      - support for the gig parameters for "release velocity response" curves      - support for the gig parameters for "release velocity response" curves

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