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Revision 1305 - (show annotations) (download)
Mon Aug 27 07:51:28 2007 UTC (12 years, 3 months ago) by iliev
File size: 14972 byte(s)
* added default min and max values to restrict the number of allowed
  audio output channels and MIDI input ports
* the connection to the PCM interface is now closed when destroying
  an audio output device

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 - notification events were not been sent for some sampler
117 channel changes
118 - added default min and max values to restrict the number of allowed
119 audio output channels and MIDI input ports
120 - the pcm is now closed when destroying an audio output device
121
122 * test cases:
123 - updated and fixed (haven't been touched in a while)
124
125 Version 0.4.0 (24 November 2006)
126
127 * packaging changes:
128 - changed deprecated copyright attribute to license; added ldconfig
129 to post-(un)install steps; added devel package for liblinuxsampler;
130 to linuxsampler.spec (RPM)
131 - install necessary development header files for allowing 3rd party
132 applications to link against liblinuxsampler
133 - liblinuxsampler's API documentation can be generated with 'make docs'
134 (Doxygen required)
135 - added benchmark to automatically detect the best triangle LFO
136 implementation (currently either an integer math solution or a
137 di-harmonic approximation), automatic detection can be overriden
138 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
139 configure script argument though (mandatory for cross-compilation)
140 - do not automatically pick optimized gcc flags if the user already
141 provided some on his own (as CXXFLAGS)
142 - added compile time option to disable processing of All-Notes-Off MIDI
143 messages
144 - added compile time options to allow disabling the various audio and
145 MIDI drivers
146 - fixed automatic GCC CPU switch detection on PPC
147 (patch by Ebrahim Mayat)
148
149 * Gigasampler format engine:
150 - extensive synthesis optimization
151 (reimplementation of EGs and LFO(s), removed synthesis parameter
152 prerendering and the synthesis parameter matrix in general, splitting
153 each audio fragment into subfragments now where each subfragment uses
154 constant pitch and filter coefficients. The volume coefficient is
155 linearly interpolated inside a subfragment, unless
156 --disable-interpolate-volume is set.)
157 - fine tuning of the EG modulation parameters
158 - improved filter cutoff calculation by adding support for the
159 following gig parameters: Cutoff freq (used when no cutoff
160 controller is defined), Control invert, Minimum cutoff, Velocity
161 curve and Velocity range. The keyboard tracking now scales
162 cutoff frequency instead of resonance.
163 - added support for gig parameter Resonance.
164 - fixed bug in sysex handling (patch by Juan Linietsky)
165 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
166 which can be overridden with --enable-global-attenuation
167 - EG fixes: made the length of "attack hold" stage more
168 accurate. Release stage can now start before attack stage
169 ends. Cancel release didn't work when sustain was zero. Attack
170 time now has a minimal value to prevent clicks.
171 - fixed pitch changes larger than one octave
172 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
173 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
174 all modes can be altered via standard GM messages, that is CC5 for
175 altering portamento time, CC65 for enabling / disabling portamento
176 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
177 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
178 parameter) and crossfade
179 - added support for the "attenuation controller threshold" gig
180 parameter
181 - added smoothing of volume changes caused by control change
182 messages
183 - sample loop parameters are now taken from the DimensionRegion
184 instead of the wave chunk
185 - fixed keyswitching for v3 gigs with a number of keyswitch splits
186 not equal to a power of two
187 - reimplementation of the filter algorithm. The new filter is more
188 accurate and supports all gig filter types, including bandreject
189 and lowpass turbo.
190 - real support for 24 bit samples - samples are not truncated to
191 16 bits anymore
192 - support for aftertouch (channel pressure, not polyphonic
193 aftertouch)
194 - LFO1 behaviour fixed (dampening from max volume instead of
195 amplifying from 0)
196
197 * LSCP server:
198 - fixed application exit on broken pipe error (fixes bug #20)
199 - fixed the notification messages delay due to lack of
200 network activity (fixes bug #26)
201 - fixed parser bug which occured on space(s) within device parameters
202 (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
203
204 * audio driver:
205 - added aRts audio output driver (by no means RT safe)
206
207 * MIDI driver:
208 - fixed legacy sysex code which caused dispatching of MIDI SysEx
209 messages several times instead of once
210 - API extension for MIDI drivers which already supply exact time stamps
211 for events (i.e. for offline rendering based MIDI drivers)
212 - added checks for bad MIDI data
213
214 * linuxsampler application:
215 - show available sampler engine types on startup
216
217 * general changes:
218 - support for muting sampler channels and solo mode of the same, two new
219 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
220 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
221 introduced for this, the behavior is the same like on a mixer console
222 (patch by Grigor Iliev, a bit adjusted). Also added configure option
223 --enable-process-muted-channels which can be used to enable the
224 processing of muted channels.
225 - support for sostenuto pedal
226 - support for monitoring the total number of active voices
227 (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
228 SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
229 - fixed some memory management errors
230 - fixed some concurrency problems that could lead to crashes when
231 LSCP commands were executed
232 - fixed crash when instrument loading failed previously on the same
233 sampler channel (fixes bug #36)
234
235 Version 0.3.3 (15 July 2005)
236
237 * packaging changes:
238 - fixed compilation with gcc 4.0
239
240 * Gigasampler format engine:
241 - LFO preprocessing was performed even though the respective LFO was
242 disabled by the instrument patch (minor efficiency fix)
243 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
244 for volume ramp downs in the same fragment (needed for current voice
245 stealing implementation) then simply inform the user with a warning
246 about possible click sounds and reduce the volume ramp down
247 appropriately instead of cancelling the audio device connection
248
249 Version 0.3.2 (24 June 2005)
250
251 * packaging changes:
252 - updated autotools build files to compile on OS X
253 (conditional compilation of CoreMIDI and MidiShare drivers)
254 - hand-crafted assembly optimization code can be disabled with
255 './configure --disable-asm' (definitely not recommended)
256 - fixed 'make dist' rule to include all necessary files
257 - require automake (>= 1.5) for 'make -f Makefile.cvs'
258 (due to 'dist-bzip2' automake option)
259
260 * Gigasampler format engine:
261 - support for the gig parameters for "release velocity response" curves
262 - fine tuning of the EGADSR envelope
263 - volume of release triggered samples now depends on note-on velocity,
264 note length and gig parameter "release trigger decay" instead of
265 note-off velocity.
266 - revised voice stealing
267 (fixes crash and endless loop caused by voice stealing)
268 - don't reset scale tuning on instrument or audio output device change
269 - handle key group conflicts right at the beginning of each fragment
270 instead of when the respective voice is actually launched
271 (fixes undefined behavior if stolen voices belonged to a key group -
272 this case was followed by a "killed voice survived" error message)
273 - fixed minor issue with null/silence samples
274 (those stole voices even though they don't need a voice at all which
275 resulted in "voice stealing didn't work out" messages)
276 - don't reset volume, pan, pitch and MIDI controller values on
277 instrument or audio output device change
278
279 * LSCP server:
280 - fixed some crashes (patch by Grigor Iliev, fixes #19)
281 - fixed LSCP event "CHANNEL_INFO" notification
282 (e.g. did not notify on volume changes or MIDI program change events)
283
284 * linuxsampler application:
285 - added command line parameters --lscp-addr and --lscp-port to override
286 default IP address and port of LSCP server
287
288 Version 0.3.1 (24 May 2005)
289
290 * initial release

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