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revision 620 by schoenebeck, Wed Jun 8 23:16:13 2005 UTC revision 1349 by persson, Sat Sep 15 11:05:38 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)
114        - made sure that LSCP syntax is not affected by gigedit locale
115          settings
117      * Bug fixes:
118        - fixed crash occurring on certain LSCP scripts (Bug 39)
119        - another thread safety fix for lscp "load engine" and "set
120          channel audio output device"
121        - fixed a crash which occurs when reassigning the same engine
122          on a sampler channel with connected MIDI device
123        - fixed a crash which occurs when changing the number of ports of a MIDI
124          device connected to a sampler channel to number less then or equal
125          to the index of the port to which the sampler channel is connected.
126        - The previous bindings were not been disconnected when altering
127          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
128          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
129        - The active stream/voice count statistic was incorrect.
130        - notification events were not been sent for some sampler
131          channel changes
132        - added default min and max values to restrict the number of allowed
133          audio output channels and MIDI input ports
134        - the connection to the PCM interface is now closed when destroying
135          an audio output device
136        - files with slash in their path or filename could not be loaded
138      * test cases:
139        - updated and fixed (haven't been touched in a while)
141    Version 0.4.0 (24 November 2006)
143      * packaging changes:
144        - changed deprecated copyright attribute to license; added ldconfig
145          to post-(un)install steps; added devel package for liblinuxsampler;
146          to linuxsampler.spec (RPM)
147        - install necessary development header files for allowing 3rd party
148          applications to link against liblinuxsampler
149        - liblinuxsampler's API documentation can be generated with 'make docs'
150          (Doxygen required)
151        - added benchmark to automatically detect the best triangle LFO
152          implementation (currently either an integer math solution or a
153          di-harmonic approximation), automatic detection can be overriden
154          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
155          configure script argument though (mandatory for cross-compilation)
156        - do not automatically pick optimized gcc flags if the user already
157          provided some on his own (as CXXFLAGS)
158        - added compile time option to disable processing of All-Notes-Off MIDI
159          messages
160        - added compile time options to allow disabling the various audio and
161          MIDI drivers
162        - fixed automatic GCC CPU switch detection on PPC
163          (patch by Ebrahim Mayat)
165      * Gigasampler format engine:
166        - extensive synthesis optimization
167          (reimplementation of EGs and LFO(s), removed synthesis parameter
168          prerendering and the synthesis parameter matrix in general, splitting
169          each audio fragment into subfragments now where each subfragment uses
170          constant pitch and filter coefficients. The volume coefficient is
171          linearly interpolated inside a subfragment, unless
172          --disable-interpolate-volume is set.)
173        - fine tuning of the EG modulation parameters
174        - improved filter cutoff calculation by adding support for the
175          following gig parameters: Cutoff freq (used when no cutoff
176          controller is defined), Control invert, Minimum cutoff, Velocity
177          curve and Velocity range. The keyboard tracking now scales
178          cutoff frequency instead of resonance.
179        - added support for gig parameter Resonance.
180        - fixed bug in sysex handling (patch by Juan Linietsky)
181        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
182          which can be overridden with --enable-global-attenuation
183        - EG fixes: made the length of "attack hold" stage more
184          accurate. Release stage can now start before attack stage
185          ends. Cancel release didn't work when sustain was zero. Attack
186          time now has a minimal value to prevent clicks.
187        - fixed pitch changes larger than one octave
188        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
189        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
190          all modes can be altered via standard GM messages, that is CC5 for
191          altering portamento time, CC65 for enabling / disabling portamento
192          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
193        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
194          parameter) and crossfade
195        - added support for the "attenuation controller threshold" gig
196          parameter
197        - added smoothing of volume changes caused by control change
198          messages
199        - sample loop parameters are now taken from the DimensionRegion
200          instead of the wave chunk
201        - fixed keyswitching for v3 gigs with a number of keyswitch splits
202          not equal to a power of two
203        - reimplementation of the filter algorithm. The new filter is more
204          accurate and supports all gig filter types, including bandreject
205          and lowpass turbo.
206        - real support for 24 bit samples - samples are not truncated to
207          16 bits anymore
208        - support for aftertouch (channel pressure, not polyphonic
209          aftertouch)
210        - LFO1 behaviour fixed (dampening from max volume instead of
211          amplifying from 0)
213      * LSCP server:
214        - fixed application exit on broken pipe error (fixes bug #20)
215        - fixed the notification messages delay due to lack of
216          network activity (fixes bug #26)
217        - fixed parser bug which occured on space(s) within device parameters
218          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
220      * audio driver:
221        - added aRts audio output driver (by no means RT safe)
223      * MIDI driver:
224        - fixed legacy sysex code which caused dispatching of MIDI SysEx
225          messages several times instead of once
226        - API extension for MIDI drivers which already supply exact time stamps
227          for events (i.e. for offline rendering based MIDI drivers)
228        - added checks for bad MIDI data
230      * linuxsampler application:
231        - show available sampler engine types on startup
233      * general changes:
234        - support for muting sampler channels and solo mode of the same, two new
235          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
236          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
237          introduced for this, the behavior is the same like on a mixer console
238          (patch by Grigor Iliev, a bit adjusted). Also added configure option
239          --enable-process-muted-channels which can be used to enable the
240          processing of muted channels.
241        - support for sostenuto pedal
242        - support for monitoring the total number of active voices
245        - fixed some memory management errors
246        - fixed some concurrency problems that could lead to crashes when
247          LSCP commands were executed
248        - fixed crash when instrument loading failed previously on the same
249          sampler channel (fixes bug #36)
251    Version 0.3.3 (15 July 2005)
253      * packaging changes:
254        - fixed compilation with gcc 4.0
256      * Gigasampler format engine:
257        - LFO preprocessing was performed even though the respective LFO was
258          disabled by the instrument patch (minor efficiency fix)
259        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
260          for volume ramp downs in the same fragment (needed for current voice
261          stealing implementation) then simply inform the user with a warning
262          about possible click sounds and reduce the volume ramp down
263          appropriately instead of cancelling the audio device connection
265    Version 0.3.2 (24 June 2005)
267      * packaging changes:
268      - updated autotools build files to compile on OS X      - updated autotools build files to compile on OS X
269        (conditional compilation of CoreMIDI and MidiShare drivers)        (conditional compilation of CoreMIDI and MidiShare drivers)
270      - hand-crafted assembly optimization code can be disabled with      - hand-crafted assembly optimization code can be disabled with
271        './configure --disable-asm' (definitely not recommended)        './configure --disable-asm' (definitely not recommended)
272    * support for the gig parameters for "release velocity response"      - fixed 'make dist' rule to include all necessary files
273      curves      - require automake (>= 1.5) for 'make -f Makefile.cvs'
274    * fine tuning of the EGADSR envelope        (due to 'dist-bzip2' automake option)
276      * Gigasampler format engine:
277        - support for the gig parameters for "release velocity response" curves
278        - fine tuning of the EGADSR envelope
279        - volume of release triggered samples now depends on note-on velocity,
280          note length and gig parameter "release trigger decay" instead of
281          note-off velocity.
282        - revised voice stealing
283          (fixes crash and endless loop caused by voice stealing)
284        - don't reset scale tuning on instrument or audio output device change
285        - handle key group conflicts right at the beginning of each fragment
286          instead of when the respective voice is actually launched
287          (fixes undefined behavior if stolen voices belonged to a key group -
288          this case was followed by a "killed voice survived" error message)
289        - fixed minor issue with null/silence samples
290          (those stole voices even though they don't need a voice at all which
291          resulted in "voice stealing didn't work out" messages)
292        - don't reset volume, pan, pitch and MIDI controller values on
293          instrument or audio output device change
295    * LSCP server:    * LSCP server:
296      - fixed some crashs (patch by Grigor Iliev, fixes #19)      - fixed some crashes (patch by Grigor Iliev, fixes #19)
297        - fixed LSCP event "CHANNEL_INFO" notification
298          (e.g. did not notify on volume changes or MIDI program change events)
300      * linuxsampler application:
301        - added command line parameters --lscp-addr and --lscp-port to override
302          default IP address and port of LSCP server
304  Version 0.3.1 (24 May 2005)  Version 0.3.1 (24 May 2005)

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