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Contents of /linuxsampler/trunk/ChangeLog

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Revision 1314 - (show annotations) (download)
Fri Aug 31 10:29:13 2007 UTC (13 years, 6 months ago) by schoenebeck
File size: 15145 byte(s)
* minor assembly fix in x86 features detection (don't use the PIC
  register, to avoid relocations in the text segment at runtime)

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

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