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revision 711 by schoenebeck, Thu Jul 21 09:53:20 2005 UTC revision 1389 by schoenebeck, Sun Oct 7 14:05:04 2007 UTC
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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        - 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 "EDIT INSTRUMENT <sampler-channel>"
51          to spawn a matching instrument editor for the instrument on the
52          given sampler channel, the plugin path can be overridden at compile
53          time with ./configure --enable-plugin-dir=/some/dir
54        - added experimental code for synchronizing instrument editors hosted
55          in the sampler's process to safely edit instruments while playing
56          without a crash (hopefully) by either suspending single regions
57          wherever possible or if unavoidable whole engine(s)
58        - fixed several issues in fundamental "Thread" class: set scheduling
59          policy and priority on thread level, set a minimum stack size for
60          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
61          threads simply inherited properties of starting thread instead of
62          setting their own policy and priority
63        - minor fix in our automatic stack trace mechanism on crashes, the
64          main process did not wait for the stack trace process to finish
65          its output
66        - fixed some minor memory leaks
67        - reenabled assembly features support, at the moment only for
68          enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
69        - minor assembly fix in x86 features detection (don't use the PIC
70          register, to avoid relocations in the text segment at runtime)
71    
72      * MIDI driver:
73        - dispatch bank select (MSB and LSB) messages
74    
75      * audio driver:
76        - the ALSA audio output driver parameters now reflect the correct
77          parameter value ranges for the respective selected sound card
78          (patch by Till Wimmer, a bit fixed and extended)
79    
80      * Gigasampler format engine:
81        - if a filter is used and EG2 finishes before EG1, let the voice
82          die when EG2 has finished (this fixes a problem with clicks and
83          voice starvation for some gigs)
84        - playback is no longer disabled during instrument loading
85        - all notes playing on a channel that changes its instrument keep
86          playing with the old instrument until they get a note off
87          command
88        - EG fix: a release value of zero could cause noises or crash
89        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
90        - EG fine tuning: when attack is zero the EG starts at a level
91          above max sustain level, which means that there is a decay phase
92          even if sustain is 100%
93        - more EG fixes: the level could sometimes go below zero and cause
94          noises or crashes
95        - minor fix of EGDecay (patch by Toshi Nagata)
96        - fixed compiler error when --enable-override-filter-type was
97          supplied to the configure script (fixes #46)
98        - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
99          instead of a fix value
100        - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
101          127 (solo mode) only kill voices if the respective mode really
102          changed
103    
104      * LSCP server:
105        - fixed compile time error for old Bison versions
106          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
107        - parser now supports extended ASCII character set
108          (up to ASCII code 255, i.e. includes now umlauts and accents)
109        - filename arguments in LSCP commands now allow to use escape
110          sequences, that is directly literal as one of: \', \", \\, \n, \r,
111          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
112          code value like \xf2) (fixes bug #24)
113        - the following LSCP commands now also support escape sequences for at
114          least one of their text-based parameters (i.e. name, description):
115          "ADD MIDI_INSTRUMENT_MAP", "MAP MIDI_INSTRUMENT",
116          "SET MIDI_INSTRUMENT_MAP NAME", "SET FX_SEND NAME", "CREATE FX_SEND",
117          "SET DB_INSTRUMENT_DIRECTORY NAME",
118          "SET DB_INSTRUMENT_DIRECTORY DESCRIPTION", "SET DB_INSTRUMENT NAME",
119          "SET DB_INSTRUMENT DESCRIPTION", "FIND DB_INSTRUMENTS",
120          "FIND DB_INSTRUMENT_DIRECTORIES"
121        - returns verbose syntax errors (line and column where syntax error
122          occured, the unexpected character and the actually expected, possible
123          character(s), the latter only if less than 5 possibilities)
124        - made sure that LSCP syntax is not affected by gigedit locale
125          settings
126        - bugfix regarding strings parameter lists: all comma separated lists
127          of strings were treated as being one string containing commas
128          (fixes #57)
129    
130      * Bug fixes:
131        - fixed crash occurring on certain LSCP scripts (Bug 39)
132        - another thread safety fix for lscp "load engine" and "set
133          channel audio output device"
134        - fixed a crash which occurs when reassigning the same engine
135          on a sampler channel with connected MIDI device
136        - fixed a crash which occurs when changing the number of ports of a MIDI
137          device connected to a sampler channel to number less then or equal
138          to the index of the port to which the sampler channel is connected.
139        - The previous bindings were not been disconnected when altering
140          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
141          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
142        - The active stream/voice count statistic was incorrect.
143        - notification events were not been sent for some sampler
144          channel changes
145        - added default min and max values to restrict the number of allowed
146          audio output channels and MIDI input ports
147        - the connection to the PCM interface is now closed when destroying
148          an audio output device
149        - files with slash in their path or filename could not be loaded
150    
151      * test cases:
152        - updated and fixed (haven't been touched in a while)
153    
154    Version 0.4.0 (24 November 2006)
155    
156      * packaging changes:
157        - changed deprecated copyright attribute to license; added ldconfig
158          to post-(un)install steps; added devel package for liblinuxsampler;
159          to linuxsampler.spec (RPM)
160      - install necessary development header files for allowing 3rd party      - install necessary development header files for allowing 3rd party
161        applications to link against liblinuxsampler        applications to link against liblinuxsampler
162      - liblinuxsampler's API documentation can be generated with 'make docs'      - liblinuxsampler's API documentation can be generated with 'make docs'
163        (Doxygen required)        (Doxygen required)
164        - added benchmark to automatically detect the best triangle LFO
165          implementation (currently either an integer math solution or a
166          di-harmonic approximation), automatic detection can be overriden
167          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
168          configure script argument though (mandatory for cross-compilation)
169        - do not automatically pick optimized gcc flags if the user already
170          provided some on his own (as CXXFLAGS)
171        - added compile time option to disable processing of All-Notes-Off MIDI
172          messages
173        - added compile time options to allow disabling the various audio and
174          MIDI drivers
175        - fixed automatic GCC CPU switch detection on PPC
176          (patch by Ebrahim Mayat)
177    
178    * Gigasampler format engine:    * Gigasampler format engine:
179        - extensive synthesis optimization
180          (reimplementation of EGs and LFO(s), removed synthesis parameter
181          prerendering and the synthesis parameter matrix in general, splitting
182          each audio fragment into subfragments now where each subfragment uses
183          constant pitch and filter coefficients. The volume coefficient is
184          linearly interpolated inside a subfragment, unless
185          --disable-interpolate-volume is set.)
186      - fine tuning of the EG modulation parameters      - fine tuning of the EG modulation parameters
187        - improved filter cutoff calculation by adding support for the
188          following gig parameters: Cutoff freq (used when no cutoff
189          controller is defined), Control invert, Minimum cutoff, Velocity
190          curve and Velocity range. The keyboard tracking now scales
191          cutoff frequency instead of resonance.
192        - added support for gig parameter Resonance.
193        - fixed bug in sysex handling (patch by Juan Linietsky)
194        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
195          which can be overridden with --enable-global-attenuation
196        - EG fixes: made the length of "attack hold" stage more
197          accurate. Release stage can now start before attack stage
198          ends. Cancel release didn't work when sustain was zero. Attack
199          time now has a minimal value to prevent clicks.
200        - fixed pitch changes larger than one octave
201        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
202        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
203          all modes can be altered via standard GM messages, that is CC5 for
204          altering portamento time, CC65 for enabling / disabling portamento
205          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
206        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
207          parameter) and crossfade
208        - added support for the "attenuation controller threshold" gig
209          parameter
210        - added smoothing of volume changes caused by control change
211          messages
212        - sample loop parameters are now taken from the DimensionRegion
213          instead of the wave chunk
214        - fixed keyswitching for v3 gigs with a number of keyswitch splits
215          not equal to a power of two
216        - reimplementation of the filter algorithm. The new filter is more
217          accurate and supports all gig filter types, including bandreject
218          and lowpass turbo.
219        - real support for 24 bit samples - samples are not truncated to
220          16 bits anymore
221        - support for aftertouch (channel pressure, not polyphonic
222          aftertouch)
223        - LFO1 behaviour fixed (dampening from max volume instead of
224          amplifying from 0)
225    
226    * LSCP server:    * LSCP server:
227      - fixed application exit on broken pipe error (fixes bug #20)      - fixed application exit on broken pipe error (fixes bug #20)
228        - fixed the notification messages delay due to lack of
229          network activity (fixes bug #26)
230        - fixed parser bug which occured on space(s) within device parameters
231          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
232    
233      * audio driver:
234        - added aRts audio output driver (by no means RT safe)
235    
236      * MIDI driver:
237        - fixed legacy sysex code which caused dispatching of MIDI SysEx
238          messages several times instead of once
239        - API extension for MIDI drivers which already supply exact time stamps
240          for events (i.e. for offline rendering based MIDI drivers)
241        - added checks for bad MIDI data
242    
243      * linuxsampler application:
244        - show available sampler engine types on startup
245    
246    * general changes:    * general changes:
247      - support for muting sampler channels and solo mode of the same, two new      - support for muting sampler channels and solo mode of the same, two new
248        LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new        LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
249        fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were        fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
250        introduced for this, the behavior is the same like on a mixer console        introduced for this, the behavior is the same like on a mixer console
251        (patch by Grigor Iliev, a bit adjusted)        (patch by Grigor Iliev, a bit adjusted). Also added configure option
252          --enable-process-muted-channels which can be used to enable the
253          processing of muted channels.
254        - support for sostenuto pedal
255        - support for monitoring the total number of active voices
256          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
257          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
258        - fixed some memory management errors
259        - fixed some concurrency problems that could lead to crashes when
260          LSCP commands were executed
261        - fixed crash when instrument loading failed previously on the same
262          sampler channel (fixes bug #36)
263    
264  Version 0.3.3 (15 July 2005)  Version 0.3.3 (15 July 2005)
265    

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