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Revision 1297 - (show annotations) (download)
Thu Aug 16 15:55:21 2007 UTC (12 years, 3 months ago) by iliev
File size: 14699 byte(s)
* bugfix: the active stream/voice count statistic was incorrect

1 Version CVS HEAD (?)
2
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
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
59 - fixed some minor memory leaks
60 - reenabled assembly features support, at the moment only for
61 enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
62
63 * MIDI driver:
64 - dispatch bank select (MSB and LSB) messages
65
66 * audio driver:
67 - the ALSA audio output driver parameters now reflect the correct
68 parameter value ranges for the respective selected sound card
69 (patch by Till Wimmer, a bit fixed and extended)
70
71 * Gigasampler format engine:
72 - if a filter is used and EG2 finishes before EG1, let the voice
73 die when EG2 has finished (this fixes a problem with clicks and
74 voice starvation for some gigs)
75 - playback is no longer disabled during instrument loading
76 - all notes playing on a channel that changes its instrument keep
77 playing with the old instrument until they get a note off
78 command
79 - EG fix: a release value of zero could cause noises or crash
80 - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
81 - EG fine tuning: when attack is zero the EG starts at a level
82 above max sustain level, which means that there is a decay phase
83 even if sustain is 100%
84 - more EG fixes: the level could sometimes go below zero and cause
85 noises or crashes
86 - minor fix of EGDecay (patch by Toshi Nagata)
87 - fixed compiler error when --enable-override-filter-type was
88 supplied to the configure script (fixes #46)
89
90 * LSCP server:
91 - fixed compile time error for old Bison versions
92 (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
93 - parser now supports extended ASCII character set
94 (up to ASCII code 255, i.e. includes now umlauts and accents)
95 - filename arguments in LSCP commands now allow to use escape
96 sequences, that is directly literal as one of: \', \", \\, \n, \r,
97 \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
98 code value like \xf2) (fixes bug #24)
99 - returns verbose syntax errors (line and column where syntax error
100 occured, the unexpected character and the actually expected, possible
101 character(s), the latter only if less than 5 possibilities)
102
103 * Bug fixes:
104 - fixed crash occurring on certain LSCP scripts (Bug 39)
105 - another thread safety fix for lscp "load engine" and "set
106 channel audio output device"
107 - fixed a crash which occurs when reassigning the same engine
108 on a sampler channel with connected MIDI device
109 - fixed a crash which occurs when changing the number of ports of a MIDI
110 device connected to a sampler channel to number less then or equal
111 to the index of the port to which the sampler channel is connected.
112 - The previous bindings were not been disconnected when altering
113 the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
114 unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
115 - The active stream/voice count statistic was incorrect.
116
117 * test cases:
118 - updated and fixed (haven't been touched in a while)
119
120 Version 0.4.0 (24 November 2006)
121
122 * packaging changes:
123 - changed deprecated copyright attribute to license; added ldconfig
124 to post-(un)install steps; added devel package for liblinuxsampler;
125 to linuxsampler.spec (RPM)
126 - install necessary development header files for allowing 3rd party
127 applications to link against liblinuxsampler
128 - liblinuxsampler's API documentation can be generated with 'make docs'
129 (Doxygen required)
130 - added benchmark to automatically detect the best triangle LFO
131 implementation (currently either an integer math solution or a
132 di-harmonic approximation), automatic detection can be overriden
133 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
134 configure script argument though (mandatory for cross-compilation)
135 - do not automatically pick optimized gcc flags if the user already
136 provided some on his own (as CXXFLAGS)
137 - added compile time option to disable processing of All-Notes-Off MIDI
138 messages
139 - added compile time options to allow disabling the various audio and
140 MIDI drivers
141 - fixed automatic GCC CPU switch detection on PPC
142 (patch by Ebrahim Mayat)
143
144 * Gigasampler format engine:
145 - extensive synthesis optimization
146 (reimplementation of EGs and LFO(s), removed synthesis parameter
147 prerendering and the synthesis parameter matrix in general, splitting
148 each audio fragment into subfragments now where each subfragment uses
149 constant pitch and filter coefficients. The volume coefficient is
150 linearly interpolated inside a subfragment, unless
151 --disable-interpolate-volume is set.)
152 - fine tuning of the EG modulation parameters
153 - improved filter cutoff calculation by adding support for the
154 following gig parameters: Cutoff freq (used when no cutoff
155 controller is defined), Control invert, Minimum cutoff, Velocity
156 curve and Velocity range. The keyboard tracking now scales
157 cutoff frequency instead of resonance.
158 - added support for gig parameter Resonance.
159 - fixed bug in sysex handling (patch by Juan Linietsky)
160 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
161 which can be overridden with --enable-global-attenuation
162 - EG fixes: made the length of "attack hold" stage more
163 accurate. Release stage can now start before attack stage
164 ends. Cancel release didn't work when sustain was zero. Attack
165 time now has a minimal value to prevent clicks.
166 - fixed pitch changes larger than one octave
167 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
168 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
169 all modes can be altered via standard GM messages, that is CC5 for
170 altering portamento time, CC65 for enabling / disabling portamento
171 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
172 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
173 parameter) and crossfade
174 - added support for the "attenuation controller threshold" gig
175 parameter
176 - added smoothing of volume changes caused by control change
177 messages
178 - sample loop parameters are now taken from the DimensionRegion
179 instead of the wave chunk
180 - fixed keyswitching for v3 gigs with a number of keyswitch splits
181 not equal to a power of two
182 - reimplementation of the filter algorithm. The new filter is more
183 accurate and supports all gig filter types, including bandreject
184 and lowpass turbo.
185 - real support for 24 bit samples - samples are not truncated to
186 16 bits anymore
187 - support for aftertouch (channel pressure, not polyphonic
188 aftertouch)
189 - LFO1 behaviour fixed (dampening from max volume instead of
190 amplifying from 0)
191
192 * LSCP server:
193 - fixed application exit on broken pipe error (fixes bug #20)
194 - fixed the notification messages delay due to lack of
195 network activity (fixes bug #26)
196 - fixed parser bug which occured on space(s) within device parameters
197 (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
198
199 * audio driver:
200 - added aRts audio output driver (by no means RT safe)
201
202 * MIDI driver:
203 - fixed legacy sysex code which caused dispatching of MIDI SysEx
204 messages several times instead of once
205 - API extension for MIDI drivers which already supply exact time stamps
206 for events (i.e. for offline rendering based MIDI drivers)
207 - added checks for bad MIDI data
208
209 * linuxsampler application:
210 - show available sampler engine types on startup
211
212 * general changes:
213 - support for muting sampler channels and solo mode of the same, two new
214 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
215 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
216 introduced for this, the behavior is the same like on a mixer console
217 (patch by Grigor Iliev, a bit adjusted). Also added configure option
218 --enable-process-muted-channels which can be used to enable the
219 processing of muted channels.
220 - support for sostenuto pedal
221 - support for monitoring the total number of active voices
222 (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
223 SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
224 - fixed some memory management errors
225 - fixed some concurrency problems that could lead to crashes when
226 LSCP commands were executed
227 - fixed crash when instrument loading failed previously on the same
228 sampler channel (fixes bug #36)
229
230 Version 0.3.3 (15 July 2005)
231
232 * packaging changes:
233 - fixed compilation with gcc 4.0
234
235 * Gigasampler format engine:
236 - LFO preprocessing was performed even though the respective LFO was
237 disabled by the instrument patch (minor efficiency fix)
238 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
239 for volume ramp downs in the same fragment (needed for current voice
240 stealing implementation) then simply inform the user with a warning
241 about possible click sounds and reduce the volume ramp down
242 appropriately instead of cancelling the audio device connection
243
244 Version 0.3.2 (24 June 2005)
245
246 * packaging changes:
247 - updated autotools build files to compile on OS X
248 (conditional compilation of CoreMIDI and MidiShare drivers)
249 - hand-crafted assembly optimization code can be disabled with
250 './configure --disable-asm' (definitely not recommended)
251 - fixed 'make dist' rule to include all necessary files
252 - require automake (>= 1.5) for 'make -f Makefile.cvs'
253 (due to 'dist-bzip2' automake option)
254
255 * Gigasampler format engine:
256 - support for the gig parameters for "release velocity response" curves
257 - fine tuning of the EGADSR envelope
258 - volume of release triggered samples now depends on note-on velocity,
259 note length and gig parameter "release trigger decay" instead of
260 note-off velocity.
261 - revised voice stealing
262 (fixes crash and endless loop caused by voice stealing)
263 - don't reset scale tuning on instrument or audio output device change
264 - handle key group conflicts right at the beginning of each fragment
265 instead of when the respective voice is actually launched
266 (fixes undefined behavior if stolen voices belonged to a key group -
267 this case was followed by a "killed voice survived" error message)
268 - fixed minor issue with null/silence samples
269 (those stole voices even though they don't need a voice at all which
270 resulted in "voice stealing didn't work out" messages)
271 - don't reset volume, pan, pitch and MIDI controller values on
272 instrument or audio output device change
273
274 * LSCP server:
275 - fixed some crashes (patch by Grigor Iliev, fixes #19)
276 - fixed LSCP event "CHANNEL_INFO" notification
277 (e.g. did not notify on volume changes or MIDI program change events)
278
279 * linuxsampler application:
280 - added command line parameters --lscp-addr and --lscp-port to override
281 default IP address and port of LSCP server
282
283 Version 0.3.1 (24 May 2005)
284
285 * initial release

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