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Revision 1345 - (show annotations) (download)
Thu Sep 13 21:46:25 2007 UTC (16 years, 6 months ago) by iliev
File size: 15660 byte(s)
* added support for escape sequences to the instruments database

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 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)
69
70 * MIDI driver:
71 - dispatch bank select (MSB and LSB) messages
72
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)
77
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
99 * LSCP server:
100 - fixed compile time error for old Bison versions
101 (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
102 - parser now supports extended ASCII character set
103 (up to ASCII code 255, i.e. includes now umlauts and accents)
104 - filename arguments in LSCP commands now allow to use escape
105 sequences, that is directly literal as one of: \', \", \\, \n, \r,
106 \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
107 code value like \xf2) (fixes bug #24)
108 - returns verbose syntax errors (line and column where syntax error
109 occured, the unexpected character and the actually expected, possible
110 character(s), the latter only if less than 5 possibilities)
111
112 * Bug fixes:
113 - fixed crash occurring on certain LSCP scripts (Bug 39)
114 - another thread safety fix for lscp "load engine" and "set
115 channel audio output device"
116 - fixed a crash which occurs when reassigning the same engine
117 on a sampler channel with connected MIDI device
118 - fixed a crash which occurs when changing the number of ports of a MIDI
119 device connected to a sampler channel to number less then or equal
120 to the index of the port to which the sampler channel is connected.
121 - The previous bindings were not been disconnected when altering
122 the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
123 unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
124 - The active stream/voice count statistic was incorrect.
125 - notification events were not been sent for some sampler
126 channel changes
127 - added default min and max values to restrict the number of allowed
128 audio output channels and MIDI input ports
129 - the connection to the PCM interface is now closed when destroying
130 an audio output device
131 - files with slash in their path or filename could not be loaded
132
133 * test cases:
134 - updated and fixed (haven't been touched in a while)
135
136 Version 0.4.0 (24 November 2006)
137
138 * packaging changes:
139 - changed deprecated copyright attribute to license; added ldconfig
140 to post-(un)install steps; added devel package for liblinuxsampler;
141 to linuxsampler.spec (RPM)
142 - install necessary development header files for allowing 3rd party
143 applications to link against liblinuxsampler
144 - liblinuxsampler's API documentation can be generated with 'make docs'
145 (Doxygen required)
146 - added benchmark to automatically detect the best triangle LFO
147 implementation (currently either an integer math solution or a
148 di-harmonic approximation), automatic detection can be overriden
149 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
150 configure script argument though (mandatory for cross-compilation)
151 - do not automatically pick optimized gcc flags if the user already
152 provided some on his own (as CXXFLAGS)
153 - added compile time option to disable processing of All-Notes-Off MIDI
154 messages
155 - added compile time options to allow disabling the various audio and
156 MIDI drivers
157 - fixed automatic GCC CPU switch detection on PPC
158 (patch by Ebrahim Mayat)
159
160 * Gigasampler format engine:
161 - extensive synthesis optimization
162 (reimplementation of EGs and LFO(s), removed synthesis parameter
163 prerendering and the synthesis parameter matrix in general, splitting
164 each audio fragment into subfragments now where each subfragment uses
165 constant pitch and filter coefficients. The volume coefficient is
166 linearly interpolated inside a subfragment, unless
167 --disable-interpolate-volume is set.)
168 - fine tuning of the EG modulation parameters
169 - improved filter cutoff calculation by adding support for the
170 following gig parameters: Cutoff freq (used when no cutoff
171 controller is defined), Control invert, Minimum cutoff, Velocity
172 curve and Velocity range. The keyboard tracking now scales
173 cutoff frequency instead of resonance.
174 - added support for gig parameter Resonance.
175 - fixed bug in sysex handling (patch by Juan Linietsky)
176 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
177 which can be overridden with --enable-global-attenuation
178 - EG fixes: made the length of "attack hold" stage more
179 accurate. Release stage can now start before attack stage
180 ends. Cancel release didn't work when sustain was zero. Attack
181 time now has a minimal value to prevent clicks.
182 - fixed pitch changes larger than one octave
183 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
184 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
185 all modes can be altered via standard GM messages, that is CC5 for
186 altering portamento time, CC65 for enabling / disabling portamento
187 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
188 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
189 parameter) and crossfade
190 - added support for the "attenuation controller threshold" gig
191 parameter
192 - added smoothing of volume changes caused by control change
193 messages
194 - sample loop parameters are now taken from the DimensionRegion
195 instead of the wave chunk
196 - fixed keyswitching for v3 gigs with a number of keyswitch splits
197 not equal to a power of two
198 - reimplementation of the filter algorithm. The new filter is more
199 accurate and supports all gig filter types, including bandreject
200 and lowpass turbo.
201 - real support for 24 bit samples - samples are not truncated to
202 16 bits anymore
203 - support for aftertouch (channel pressure, not polyphonic
204 aftertouch)
205 - LFO1 behaviour fixed (dampening from max volume instead of
206 amplifying from 0)
207
208 * LSCP server:
209 - fixed application exit on broken pipe error (fixes bug #20)
210 - fixed the notification messages delay due to lack of
211 network activity (fixes bug #26)
212 - fixed parser bug which occured on space(s) within device parameters
213 (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
214
215 * audio driver:
216 - added aRts audio output driver (by no means RT safe)
217
218 * MIDI driver:
219 - fixed legacy sysex code which caused dispatching of MIDI SysEx
220 messages several times instead of once
221 - API extension for MIDI drivers which already supply exact time stamps
222 for events (i.e. for offline rendering based MIDI drivers)
223 - added checks for bad MIDI data
224
225 * linuxsampler application:
226 - show available sampler engine types on startup
227
228 * general changes:
229 - support for muting sampler channels and solo mode of the same, two new
230 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
231 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
232 introduced for this, the behavior is the same like on a mixer console
233 (patch by Grigor Iliev, a bit adjusted). Also added configure option
234 --enable-process-muted-channels which can be used to enable the
235 processing of muted channels.
236 - support for sostenuto pedal
237 - support for monitoring the total number of active voices
238 (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
239 SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
240 - fixed some memory management errors
241 - fixed some concurrency problems that could lead to crashes when
242 LSCP commands were executed
243 - fixed crash when instrument loading failed previously on the same
244 sampler channel (fixes bug #36)
245
246 Version 0.3.3 (15 July 2005)
247
248 * packaging changes:
249 - fixed compilation with gcc 4.0
250
251 * Gigasampler format engine:
252 - LFO preprocessing was performed even though the respective LFO was
253 disabled by the instrument patch (minor efficiency fix)
254 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
255 for volume ramp downs in the same fragment (needed for current voice
256 stealing implementation) then simply inform the user with a warning
257 about possible click sounds and reduce the volume ramp down
258 appropriately instead of cancelling the audio device connection
259
260 Version 0.3.2 (24 June 2005)
261
262 * packaging changes:
263 - updated autotools build files to compile on OS X
264 (conditional compilation of CoreMIDI and MidiShare drivers)
265 - hand-crafted assembly optimization code can be disabled with
266 './configure --disable-asm' (definitely not recommended)
267 - fixed 'make dist' rule to include all necessary files
268 - require automake (>= 1.5) for 'make -f Makefile.cvs'
269 (due to 'dist-bzip2' automake option)
270
271 * Gigasampler format engine:
272 - support for the gig parameters for "release velocity response" curves
273 - fine tuning of the EGADSR envelope
274 - volume of release triggered samples now depends on note-on velocity,
275 note length and gig parameter "release trigger decay" instead of
276 note-off velocity.
277 - revised voice stealing
278 (fixes crash and endless loop caused by voice stealing)
279 - don't reset scale tuning on instrument or audio output device change
280 - handle key group conflicts right at the beginning of each fragment
281 instead of when the respective voice is actually launched
282 (fixes undefined behavior if stolen voices belonged to a key group -
283 this case was followed by a "killed voice survived" error message)
284 - fixed minor issue with null/silence samples
285 (those stole voices even though they don't need a voice at all which
286 resulted in "voice stealing didn't work out" messages)
287 - don't reset volume, pan, pitch and MIDI controller values on
288 instrument or audio output device change
289
290 * LSCP server:
291 - fixed some crashes (patch by Grigor Iliev, fixes #19)
292 - fixed LSCP event "CHANNEL_INFO" notification
293 (e.g. did not notify on volume changes or MIDI program change events)
294
295 * linuxsampler application:
296 - added command line parameters --lscp-addr and --lscp-port to override
297 default IP address and port of LSCP server
298
299 Version 0.3.1 (24 May 2005)
300
301 * initial release

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