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revision 620 by schoenebeck, Wed Jun 8 23:16:13 2005 UTC revision 1348 by schoenebeck, Fri Sep 14 14:45:11 2007 UTC
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1  Version CVS HEAD (?)  Version CVS HEAD (?)
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)
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 support for escape sequences to the instruments database
45        - added highly experimental support for on-the-fly instrument editing
46          within the sampler's process (by using instrument editor plugins),
47          you'll notice the new "Registered instrument editors:" message on
48          startup, added a new LSCP command "EDIT INSTRUMENT <sampler-channel>"
49          to spawn a matching instrument editor for the instrument on the
50          given sampler channel, the plugin path can be overridden at compile
51          time with ./configure --enable-plugin-dir=/some/dir
52        - added experimental code for synchronizing instrument editors hosted
53          in the sampler's process to safely edit instruments while playing
54          without a crash (hopefully) by either suspending single regions
55          wherever possible or if unavoidable whole engine(s)
56        - fixed several issues in fundamental "Thread" class: set scheduling
57          policy and priority on thread level, set a minimum stack size for
58          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
59          threads simply inherited properties of starting thread instead of
60          setting their own policy and priority
61        - minor fix in our automatic stack trace mechanism on crashes, the
62          main process did not wait for the stack trace process to finish
63          its output
64        - fixed some minor memory leaks
65        - reenabled assembly features support, at the moment only for
66          enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
67        - minor assembly fix in x86 features detection (don't use the PIC
68          register, to avoid relocations in the text segment at runtime)
70      * MIDI driver:
71        - dispatch bank select (MSB and LSB) messages
73      * audio driver:
74        - the ALSA audio output driver parameters now reflect the correct
75          parameter value ranges for the respective selected sound card
76          (patch by Till Wimmer, a bit fixed and extended)
78      * Gigasampler format engine:
79        - if a filter is used and EG2 finishes before EG1, let the voice
80          die when EG2 has finished (this fixes a problem with clicks and
81          voice starvation for some gigs)
82        - playback is no longer disabled during instrument loading
83        - all notes playing on a channel that changes its instrument keep
84          playing with the old instrument until they get a note off
85          command
86        - EG fix: a release value of zero could cause noises or crash
87        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
88        - EG fine tuning: when attack is zero the EG starts at a level
89          above max sustain level, which means that there is a decay phase
90          even if sustain is 100%
91        - more EG fixes: the level could sometimes go below zero and cause
92          noises or crashes
93        - minor fix of EGDecay (patch by Toshi Nagata)
94        - fixed compiler error when --enable-override-filter-type was
95          supplied to the configure script (fixes #46)
96        - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
97          instead of a fix value
98        - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
99          127 (solo mode) only kill voices if the respective mode really
100          changed
102      * LSCP server:
103        - fixed compile time error for old Bison versions
104          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
105        - parser now supports extended ASCII character set
106          (up to ASCII code 255, i.e. includes now umlauts and accents)
107        - filename arguments in LSCP commands now allow to use escape
108          sequences, that is directly literal as one of: \', \", \\, \n, \r,
109          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
110          code value like \xf2) (fixes bug #24)
111        - returns verbose syntax errors (line and column where syntax error
112          occured, the unexpected character and the actually expected, possible
113          character(s), the latter only if less than 5 possibilities)
115      * Bug fixes:
116        - fixed crash occurring on certain LSCP scripts (Bug 39)
117        - another thread safety fix for lscp "load engine" and "set
118          channel audio output device"
119        - fixed a crash which occurs when reassigning the same engine
120          on a sampler channel with connected MIDI device
121        - fixed a crash which occurs when changing the number of ports of a MIDI
122          device connected to a sampler channel to number less then or equal
123          to the index of the port to which the sampler channel is connected.
124        - The previous bindings were not been disconnected when altering
125          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
126          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
127        - The active stream/voice count statistic was incorrect.
128        - notification events were not been sent for some sampler
129          channel changes
130        - added default min and max values to restrict the number of allowed
131          audio output channels and MIDI input ports
132        - the connection to the PCM interface is now closed when destroying
133          an audio output device
134        - files with slash in their path or filename could not be loaded
136      * test cases:
137        - updated and fixed (haven't been touched in a while)
139    Version 0.4.0 (24 November 2006)
141      * packaging changes:
142        - changed deprecated copyright attribute to license; added ldconfig
143          to post-(un)install steps; added devel package for liblinuxsampler;
144          to linuxsampler.spec (RPM)
145        - install necessary development header files for allowing 3rd party
146          applications to link against liblinuxsampler
147        - liblinuxsampler's API documentation can be generated with 'make docs'
148          (Doxygen required)
149        - added benchmark to automatically detect the best triangle LFO
150          implementation (currently either an integer math solution or a
151          di-harmonic approximation), automatic detection can be overriden
152          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
153          configure script argument though (mandatory for cross-compilation)
154        - do not automatically pick optimized gcc flags if the user already
155          provided some on his own (as CXXFLAGS)
156        - added compile time option to disable processing of All-Notes-Off MIDI
157          messages
158        - added compile time options to allow disabling the various audio and
159          MIDI drivers
160        - fixed automatic GCC CPU switch detection on PPC
161          (patch by Ebrahim Mayat)
163      * Gigasampler format engine:
164        - extensive synthesis optimization
165          (reimplementation of EGs and LFO(s), removed synthesis parameter
166          prerendering and the synthesis parameter matrix in general, splitting
167          each audio fragment into subfragments now where each subfragment uses
168          constant pitch and filter coefficients. The volume coefficient is
169          linearly interpolated inside a subfragment, unless
170          --disable-interpolate-volume is set.)
171        - fine tuning of the EG modulation parameters
172        - improved filter cutoff calculation by adding support for the
173          following gig parameters: Cutoff freq (used when no cutoff
174          controller is defined), Control invert, Minimum cutoff, Velocity
175          curve and Velocity range. The keyboard tracking now scales
176          cutoff frequency instead of resonance.
177        - added support for gig parameter Resonance.
178        - fixed bug in sysex handling (patch by Juan Linietsky)
179        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
180          which can be overridden with --enable-global-attenuation
181        - EG fixes: made the length of "attack hold" stage more
182          accurate. Release stage can now start before attack stage
183          ends. Cancel release didn't work when sustain was zero. Attack
184          time now has a minimal value to prevent clicks.
185        - fixed pitch changes larger than one octave
186        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
187        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
188          all modes can be altered via standard GM messages, that is CC5 for
189          altering portamento time, CC65 for enabling / disabling portamento
190          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
191        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
192          parameter) and crossfade
193        - added support for the "attenuation controller threshold" gig
194          parameter
195        - added smoothing of volume changes caused by control change
196          messages
197        - sample loop parameters are now taken from the DimensionRegion
198          instead of the wave chunk
199        - fixed keyswitching for v3 gigs with a number of keyswitch splits
200          not equal to a power of two
201        - reimplementation of the filter algorithm. The new filter is more
202          accurate and supports all gig filter types, including bandreject
203          and lowpass turbo.
204        - real support for 24 bit samples - samples are not truncated to
205          16 bits anymore
206        - support for aftertouch (channel pressure, not polyphonic
207          aftertouch)
208        - LFO1 behaviour fixed (dampening from max volume instead of
209          amplifying from 0)
211      * LSCP server:
212        - fixed application exit on broken pipe error (fixes bug #20)
213        - fixed the notification messages delay due to lack of
214          network activity (fixes bug #26)
215        - fixed parser bug which occured on space(s) within device parameters
216          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
218      * audio driver:
219        - added aRts audio output driver (by no means RT safe)
221      * MIDI driver:
222        - fixed legacy sysex code which caused dispatching of MIDI SysEx
223          messages several times instead of once
224        - API extension for MIDI drivers which already supply exact time stamps
225          for events (i.e. for offline rendering based MIDI drivers)
226        - added checks for bad MIDI data
228      * linuxsampler application:
229        - show available sampler engine types on startup
231      * general changes:
232        - support for muting sampler channels and solo mode of the same, two new
233          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
234          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
235          introduced for this, the behavior is the same like on a mixer console
236          (patch by Grigor Iliev, a bit adjusted). Also added configure option
237          --enable-process-muted-channels which can be used to enable the
238          processing of muted channels.
239        - support for sostenuto pedal
240        - support for monitoring the total number of active voices
243        - fixed some memory management errors
244        - fixed some concurrency problems that could lead to crashes when
245          LSCP commands were executed
246        - fixed crash when instrument loading failed previously on the same
247          sampler channel (fixes bug #36)
249    Version 0.3.3 (15 July 2005)
251      * packaging changes:
252        - fixed compilation with gcc 4.0
254      * Gigasampler format engine:
255        - LFO preprocessing was performed even though the respective LFO was
256          disabled by the instrument patch (minor efficiency fix)
257        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
258          for volume ramp downs in the same fragment (needed for current voice
259          stealing implementation) then simply inform the user with a warning
260          about possible click sounds and reduce the volume ramp down
261          appropriately instead of cancelling the audio device connection
263    Version 0.3.2 (24 June 2005)
265      * packaging changes:
266      - updated autotools build files to compile on OS X      - updated autotools build files to compile on OS X
267        (conditional compilation of CoreMIDI and MidiShare drivers)        (conditional compilation of CoreMIDI and MidiShare drivers)
268      - hand-crafted assembly optimization code can be disabled with      - hand-crafted assembly optimization code can be disabled with
269        './configure --disable-asm' (definitely not recommended)        './configure --disable-asm' (definitely not recommended)
270    * support for the gig parameters for "release velocity response"      - fixed 'make dist' rule to include all necessary files
271      curves      - require automake (>= 1.5) for 'make -f Makefile.cvs'
272    * fine tuning of the EGADSR envelope        (due to 'dist-bzip2' automake option)
274      * Gigasampler format engine:
275        - support for the gig parameters for "release velocity response" curves
276        - fine tuning of the EGADSR envelope
277        - volume of release triggered samples now depends on note-on velocity,
278          note length and gig parameter "release trigger decay" instead of
279          note-off velocity.
280        - revised voice stealing
281          (fixes crash and endless loop caused by voice stealing)
282        - don't reset scale tuning on instrument or audio output device change
283        - handle key group conflicts right at the beginning of each fragment
284          instead of when the respective voice is actually launched
285          (fixes undefined behavior if stolen voices belonged to a key group -
286          this case was followed by a "killed voice survived" error message)
287        - fixed minor issue with null/silence samples
288          (those stole voices even though they don't need a voice at all which
289          resulted in "voice stealing didn't work out" messages)
290        - don't reset volume, pan, pitch and MIDI controller values on
291          instrument or audio output device change
293    * LSCP server:    * LSCP server:
294      - fixed some crashs (patch by Grigor Iliev, fixes #19)      - fixed some crashes (patch by Grigor Iliev, fixes #19)
295        - fixed LSCP event "CHANNEL_INFO" notification
296          (e.g. did not notify on volume changes or MIDI program change events)
298      * linuxsampler application:
299        - added command line parameters --lscp-addr and --lscp-port to override
300          default IP address and port of LSCP server
302  Version 0.3.1 (24 May 2005)  Version 0.3.1 (24 May 2005)

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