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revision 620 by schoenebeck, Wed Jun 8 23:16:13 2005 UTC revision 1245 by schoenebeck, Tue Jun 19 15:54:13 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 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
60      * MIDI driver:
61        - dispatch bank select (MSB and LSB) messages
63      * audio driver:
64        - the ALSA audio output driver parameters now reflect the correct
65          parameter value ranges for the respective selected sound card
66          (patch by Till Wimmer, a bit fixed and extended)
68      * Gigasampler format engine:
69        - if a filter is used and EG2 finishes before EG1, let the voice
70          die when EG2 has finished (this fixes a problem with clicks and
71          voice starvation for some gigs)
72        - playback is no longer disabled during instrument loading
73        - all notes playing on a channel that changes its instrument keep
74          playing with the old instrument until they get a note off
75          command
76        - EG fix: a release value of zero could cause noises or crash
77        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
78        - EG fine tuning: when attack is zero the EG starts at a level
79          above max sustain level, which means that there is a decay phase
80          even if sustain is 100%
81        - more EG fixes: the level could sometimes go below zero and cause
82          noises or crashes
83        - minor fix of EGDecay (patch by Toshi Nagata)
84        - fixed compiler error when --enable-override-filter-type was
85          supplied to the configure script (fixes #46)
87      * LSCP server:
88        - fixed compile time error for old Bison versions
89          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
90        - parser now supports extended ASCII character set
91          (up to ASCII code 255, i.e. includes now umlauts and accents)
92        - filename arguments in LSCP commands now allow to use escape
93          sequences, that is directly literal as one of: \', \", \\, \n, \r,
94          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
95          code value like \xf2) (fixes bug #24)
97      * Bug fixes:
98        - fixed crash occurring on certain LSCP scripts (Bug 39)
99        - another thread safety fix for lscp "load engine" and "set
100          channel audio output device"
102      * test cases:
103        - updated and fixed (haven't been touched in a while)
105    Version 0.4.0 (24 November 2006)
107      * packaging changes:
108        - changed deprecated copyright attribute to license; added ldconfig
109          to post-(un)install steps; added devel package for liblinuxsampler;
110          to linuxsampler.spec (RPM)
111        - install necessary development header files for allowing 3rd party
112          applications to link against liblinuxsampler
113        - liblinuxsampler's API documentation can be generated with 'make docs'
114          (Doxygen required)
115        - added benchmark to automatically detect the best triangle LFO
116          implementation (currently either an integer math solution or a
117          di-harmonic approximation), automatic detection can be overriden
118          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
119          configure script argument though (mandatory for cross-compilation)
120        - do not automatically pick optimized gcc flags if the user already
121          provided some on his own (as CXXFLAGS)
122        - added compile time option to disable processing of All-Notes-Off MIDI
123          messages
124        - added compile time options to allow disabling the various audio and
125          MIDI drivers
126        - fixed automatic GCC CPU switch detection on PPC
127          (patch by Ebrahim Mayat)
129      * Gigasampler format engine:
130        - extensive synthesis optimization
131          (reimplementation of EGs and LFO(s), removed synthesis parameter
132          prerendering and the synthesis parameter matrix in general, splitting
133          each audio fragment into subfragments now where each subfragment uses
134          constant pitch and filter coefficients. The volume coefficient is
135          linearly interpolated inside a subfragment, unless
136          --disable-interpolate-volume is set.)
137        - fine tuning of the EG modulation parameters
138        - improved filter cutoff calculation by adding support for the
139          following gig parameters: Cutoff freq (used when no cutoff
140          controller is defined), Control invert, Minimum cutoff, Velocity
141          curve and Velocity range. The keyboard tracking now scales
142          cutoff frequency instead of resonance.
143        - added support for gig parameter Resonance.
144        - fixed bug in sysex handling (patch by Juan Linietsky)
145        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
146          which can be overridden with --enable-global-attenuation
147        - EG fixes: made the length of "attack hold" stage more
148          accurate. Release stage can now start before attack stage
149          ends. Cancel release didn't work when sustain was zero. Attack
150          time now has a minimal value to prevent clicks.
151        - fixed pitch changes larger than one octave
152        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
153        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
154          all modes can be altered via standard GM messages, that is CC5 for
155          altering portamento time, CC65 for enabling / disabling portamento
156          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
157        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
158          parameter) and crossfade
159        - added support for the "attenuation controller threshold" gig
160          parameter
161        - added smoothing of volume changes caused by control change
162          messages
163        - sample loop parameters are now taken from the DimensionRegion
164          instead of the wave chunk
165        - fixed keyswitching for v3 gigs with a number of keyswitch splits
166          not equal to a power of two
167        - reimplementation of the filter algorithm. The new filter is more
168          accurate and supports all gig filter types, including bandreject
169          and lowpass turbo.
170        - real support for 24 bit samples - samples are not truncated to
171          16 bits anymore
172        - support for aftertouch (channel pressure, not polyphonic
173          aftertouch)
174        - LFO1 behaviour fixed (dampening from max volume instead of
175          amplifying from 0)
177      * LSCP server:
178        - fixed application exit on broken pipe error (fixes bug #20)
179        - fixed the notification messages delay due to lack of
180          network activity (fixes bug #26)
181        - fixed parser bug which occured on space(s) within device parameters
182          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
184      * audio driver:
185        - added aRts audio output driver (by no means RT safe)
187      * MIDI driver:
188        - fixed legacy sysex code which caused dispatching of MIDI SysEx
189          messages several times instead of once
190        - API extension for MIDI drivers which already supply exact time stamps
191          for events (i.e. for offline rendering based MIDI drivers)
192        - added checks for bad MIDI data
194      * linuxsampler application:
195        - show available sampler engine types on startup
197      * general changes:
198        - support for muting sampler channels and solo mode of the same, two new
199          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
200          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
201          introduced for this, the behavior is the same like on a mixer console
202          (patch by Grigor Iliev, a bit adjusted). Also added configure option
203          --enable-process-muted-channels which can be used to enable the
204          processing of muted channels.
205        - support for sostenuto pedal
206        - support for monitoring the total number of active voices
209        - fixed some memory management errors
210        - fixed some concurrency problems that could lead to crashes when
211          LSCP commands were executed
212        - fixed crash when instrument loading failed previously on the same
213          sampler channel (fixes bug #36)
215    Version 0.3.3 (15 July 2005)
217      * packaging changes:
218        - fixed compilation with gcc 4.0
220      * Gigasampler format engine:
221        - LFO preprocessing was performed even though the respective LFO was
222          disabled by the instrument patch (minor efficiency fix)
223        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
224          for volume ramp downs in the same fragment (needed for current voice
225          stealing implementation) then simply inform the user with a warning
226          about possible click sounds and reduce the volume ramp down
227          appropriately instead of cancelling the audio device connection
229    Version 0.3.2 (24 June 2005)
231      * packaging changes:
232      - updated autotools build files to compile on OS X      - updated autotools build files to compile on OS X
233        (conditional compilation of CoreMIDI and MidiShare drivers)        (conditional compilation of CoreMIDI and MidiShare drivers)
234      - hand-crafted assembly optimization code can be disabled with      - hand-crafted assembly optimization code can be disabled with
235        './configure --disable-asm' (definitely not recommended)        './configure --disable-asm' (definitely not recommended)
236    * support for the gig parameters for "release velocity response"      - fixed 'make dist' rule to include all necessary files
237      curves      - require automake (>= 1.5) for 'make -f Makefile.cvs'
238    * fine tuning of the EGADSR envelope        (due to 'dist-bzip2' automake option)
240      * Gigasampler format engine:
241        - support for the gig parameters for "release velocity response" curves
242        - fine tuning of the EGADSR envelope
243        - volume of release triggered samples now depends on note-on velocity,
244          note length and gig parameter "release trigger decay" instead of
245          note-off velocity.
246        - revised voice stealing
247          (fixes crash and endless loop caused by voice stealing)
248        - don't reset scale tuning on instrument or audio output device change
249        - handle key group conflicts right at the beginning of each fragment
250          instead of when the respective voice is actually launched
251          (fixes undefined behavior if stolen voices belonged to a key group -
252          this case was followed by a "killed voice survived" error message)
253        - fixed minor issue with null/silence samples
254          (those stole voices even though they don't need a voice at all which
255          resulted in "voice stealing didn't work out" messages)
256        - don't reset volume, pan, pitch and MIDI controller values on
257          instrument or audio output device change
259    * LSCP server:    * LSCP server:
260      - fixed some crashs (patch by Grigor Iliev, fixes #19)      - fixed some crashes (patch by Grigor Iliev, fixes #19)
261        - fixed LSCP event "CHANNEL_INFO" notification
262          (e.g. did not notify on volume changes or MIDI program change events)
264      * linuxsampler application:
265        - added command line parameters --lscp-addr and --lscp-port to override
266          default IP address and port of LSCP server
268  Version 0.3.1 (24 May 2005)  Version 0.3.1 (24 May 2005)

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