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Contents of /linuxsampler/trunk/ChangeLog

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Revision 1407 - (show annotations) (download)
Fri Oct 12 12:35:58 2007 UTC (9 years, 11 months ago) by schoenebeck
File size: 16662 byte(s)
* slightly renamed recently added "EDIT INSTRUMENT <sampler-chan>" LSCP
  command to "EDIT CHANNEL INSTRUMENT <sampler-chan>"

1 Version CVS HEAD (?)
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
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)
73 * MIDI driver:
74 - dispatch bank select (MSB and LSB) messages
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)
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
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):
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)
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
152 * test cases:
153 - updated and fixed (haven't been touched in a while)
155 Version 0.4.0 (24 November 2006)
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)
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)
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
234 * audio driver:
235 - added aRts audio output driver (by no means RT safe)
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
244 * linuxsampler application:
245 - show available sampler engine types on startup
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
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)
265 Version 0.3.3 (15 July 2005)
267 * packaging changes:
268 - fixed compilation with gcc 4.0
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
279 Version 0.3.2 (24 June 2005)
281 * packaging changes:
282 - updated autotools build files to compile on OS X
283 (conditional compilation of CoreMIDI and MidiShare drivers)
284 - hand-crafted assembly optimization code can be disabled with
285 './configure --disable-asm' (definitely not recommended)
286 - fixed 'make dist' rule to include all necessary files
287 - require automake (>= 1.5) for 'make -f Makefile.cvs'
288 (due to 'dist-bzip2' automake option)
290 * Gigasampler format engine:
291 - support for the gig parameters for "release velocity response" curves
292 - fine tuning of the EGADSR envelope
293 - volume of release triggered samples now depends on note-on velocity,
294 note length and gig parameter "release trigger decay" instead of
295 note-off velocity.
296 - revised voice stealing
297 (fixes crash and endless loop caused by voice stealing)
298 - don't reset scale tuning on instrument or audio output device change
299 - handle key group conflicts right at the beginning of each fragment
300 instead of when the respective voice is actually launched
301 (fixes undefined behavior if stolen voices belonged to a key group -
302 this case was followed by a "killed voice survived" error message)
303 - fixed minor issue with null/silence samples
304 (those stole voices even though they don't need a voice at all which
305 resulted in "voice stealing didn't work out" messages)
306 - don't reset volume, pan, pitch and MIDI controller values on
307 instrument or audio output device change
309 * LSCP server:
310 - fixed some crashes (patch by Grigor Iliev, fixes #19)
311 - fixed LSCP event "CHANNEL_INFO" notification
312 (e.g. did not notify on volume changes or MIDI program change events)
314 * linuxsampler application:
315 - added command line parameters --lscp-addr and --lscp-port to override
316 default IP address and port of LSCP server
318 Version 0.3.1 (24 May 2005)
320 * initial release

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