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Contents of /linuxsampler/trunk/ChangeLog

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Revision 1046 - (show annotations) (download)
Sat Feb 10 12:00:55 2007 UTC (12 years, 11 months ago) by persson
File size: 10933 byte(s)
* EG fine tuning: when attack is zero the EG starts at a level above
  max sustain level, which means that there is a decay phase even if
  sustain is 100%

1 Version CVS HEAD (?)
3 * general changes:
4 - replaced the old, confusing MIDI program change mechanism by a
5 flexible MIDI instrument mapper which allows to map arbitrary
6 (MIDI bank, MIDI program) pairs with arbitrary
7 (engine type, instrument file, file index) triplets which will be
8 loaded on the respective channel when such MIDI program change
9 messages arrive, beside that, each entry allows to define a life-time
10 strategy for the instrument, so the user can define whether the
11 instrument should i.e. be permanently loaded (to be able to switch
12 quickly among sounds) or i.e. loaded just on demand when the
13 respective program change arrives (to safe RAM space), as well as a
14 global volume factor for each entry, so the user can adjust the volume
15 dynamic of his mapped instrument collection without having to modify
16 the instrument files, also one can manage arbitrary amount of such
17 MIDI instrument maps and assign each sampler channel individually
18 a certain map, so that i.e. separation of normal instruments and
19 drumkits is possible
20 - new notification events for tracking audio/MIDI device changes,
21 MIDI instrument map changes and MIDI instrument changes
22 - sampler was limited to load max. 200 instruments in the background
23 due to a constant size RingBuffer FIFO which is now replaced by a
24 dynamic (unlimited) size std::list FIFO
25 - added FX sends, these allow to route audio signals to arbitrary audio
26 output channels for being processed by external effect processors
27 (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
28 controllers
29 - global (sampler wide) volume can now be controlled at runtime
31 * MIDI driver:
32 - dispatch bank select (MSB and LSB) messages
34 * Gigasampler format engine:
35 - if a filter is used and EG2 finishes before EG1, let the voice
36 die when EG2 has finished (this fixes a problem with clicks and
37 voice starvation for some gigs)
38 - playback is no longer disabled during instrument loading
39 - all notes playing on a channel that changes its instrument keep
40 playing with the old instrument until they get a note off
41 command
42 - EG fix: a release value of zero could cause noises or crash
43 - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
44 - EG fine tuning: when attack is zero the EG starts at a level
45 above max sustain level, which means that there is a decay phase
46 even if sustain is 100%
48 * Bug fixes:
49 - fixed crash occurring on certain LSCP scripts (Bug 39)
50 - another thread safety fix for lscp "load engine" and "set
51 channel audio output device"
53 Version 0.4.0 (24 November 2006)
55 * packaging changes:
56 - changed deprecated copyright attribute to license; added ldconfig
57 to post-(un)install steps; added devel package for liblinuxsampler;
58 to linuxsampler.spec (RPM)
59 - install necessary development header files for allowing 3rd party
60 applications to link against liblinuxsampler
61 - liblinuxsampler's API documentation can be generated with 'make docs'
62 (Doxygen required)
63 - added benchmark to automatically detect the best triangle LFO
64 implementation (currently either an integer math solution or a
65 di-harmonic approximation), automatic detection can be overriden
66 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
67 configure script argument though (mandatory for cross-compilation)
68 - do not automatically pick optimized gcc flags if the user already
69 provided some on his own (as CXXFLAGS)
70 - added compile time option to disable processing of All-Notes-Off MIDI
71 messages
72 - added compile time options to allow disabling the various audio and
73 MIDI drivers
74 - fixed automatic GCC CPU switch detection on PPC
75 (patch by Ebrahim Mayat)
77 * Gigasampler format engine:
78 - extensive synthesis optimization
79 (reimplementation of EGs and LFO(s), removed synthesis parameter
80 prerendering and the synthesis parameter matrix in general, splitting
81 each audio fragment into subfragments now where each subfragment uses
82 constant pitch and filter coefficients. The volume coefficient is
83 linearly interpolated inside a subfragment, unless
84 --disable-interpolate-volume is set.)
85 - fine tuning of the EG modulation parameters
86 - improved filter cutoff calculation by adding support for the
87 following gig parameters: Cutoff freq (used when no cutoff
88 controller is defined), Control invert, Minimum cutoff, Velocity
89 curve and Velocity range. The keyboard tracking now scales
90 cutoff frequency instead of resonance.
91 - added support for gig parameter Resonance.
92 - fixed bug in sysex handling (patch by Juan Linietsky)
93 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
94 which can be overridden with --enable-global-attenuation
95 - EG fixes: made the length of "attack hold" stage more
96 accurate. Release stage can now start before attack stage
97 ends. Cancel release didn't work when sustain was zero. Attack
98 time now has a minimal value to prevent clicks.
99 - fixed pitch changes larger than one octave
100 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
101 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
102 all modes can be altered via standard GM messages, that is CC5 for
103 altering portamento time, CC65 for enabling / disabling portamento
104 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
105 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
106 parameter) and crossfade
107 - added support for the "attenuation controller threshold" gig
108 parameter
109 - added smoothing of volume changes caused by control change
110 messages
111 - sample loop parameters are now taken from the DimensionRegion
112 instead of the wave chunk
113 - fixed keyswitching for v3 gigs with a number of keyswitch splits
114 not equal to a power of two
115 - reimplementation of the filter algorithm. The new filter is more
116 accurate and supports all gig filter types, including bandreject
117 and lowpass turbo.
118 - real support for 24 bit samples - samples are not truncated to
119 16 bits anymore
120 - support for aftertouch (channel pressure, not polyphonic
121 aftertouch)
122 - LFO1 behaviour fixed (dampening from max volume instead of
123 amplifying from 0)
125 * LSCP server:
126 - fixed application exit on broken pipe error (fixes bug #20)
127 - fixed the notification messages delay due to lack of
128 network activity (fixes bug #26)
129 - fixed parser bug which occured on space(s) within device parameters
132 * audio driver:
133 - added aRts audio output driver (by no means RT safe)
135 * MIDI driver:
136 - fixed legacy sysex code which caused dispatching of MIDI SysEx
137 messages several times instead of once
138 - API extension for MIDI drivers which already supply exact time stamps
139 for events (i.e. for offline rendering based MIDI drivers)
140 - added checks for bad MIDI data
142 * linuxsampler application:
143 - show available sampler engine types on startup
145 * general changes:
146 - support for muting sampler channels and solo mode of the same, two new
147 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
148 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
149 introduced for this, the behavior is the same like on a mixer console
150 (patch by Grigor Iliev, a bit adjusted). Also added configure option
151 --enable-process-muted-channels which can be used to enable the
152 processing of muted channels.
153 - support for sostenuto pedal
154 - support for monitoring the total number of active voices
157 - fixed some memory management errors
158 - fixed some concurrency problems that could lead to crashes when
159 LSCP commands were executed
160 - fixed crash when instrument loading failed previously on the same
161 sampler channel (fixes bug #36)
163 Version 0.3.3 (15 July 2005)
165 * packaging changes:
166 - fixed compilation with gcc 4.0
168 * Gigasampler format engine:
169 - LFO preprocessing was performed even though the respective LFO was
170 disabled by the instrument patch (minor efficiency fix)
171 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
172 for volume ramp downs in the same fragment (needed for current voice
173 stealing implementation) then simply inform the user with a warning
174 about possible click sounds and reduce the volume ramp down
175 appropriately instead of cancelling the audio device connection
177 Version 0.3.2 (24 June 2005)
179 * packaging changes:
180 - updated autotools build files to compile on OS X
181 (conditional compilation of CoreMIDI and MidiShare drivers)
182 - hand-crafted assembly optimization code can be disabled with
183 './configure --disable-asm' (definitely not recommended)
184 - fixed 'make dist' rule to include all necessary files
185 - require automake (>= 1.5) for 'make -f Makefile.cvs'
186 (due to 'dist-bzip2' automake option)
188 * Gigasampler format engine:
189 - support for the gig parameters for "release velocity response" curves
190 - fine tuning of the EGADSR envelope
191 - volume of release triggered samples now depends on note-on velocity,
192 note length and gig parameter "release trigger decay" instead of
193 note-off velocity.
194 - revised voice stealing
195 (fixes crash and endless loop caused by voice stealing)
196 - don't reset scale tuning on instrument or audio output device change
197 - handle key group conflicts right at the beginning of each fragment
198 instead of when the respective voice is actually launched
199 (fixes undefined behavior if stolen voices belonged to a key group -
200 this case was followed by a "killed voice survived" error message)
201 - fixed minor issue with null/silence samples
202 (those stole voices even though they don't need a voice at all which
203 resulted in "voice stealing didn't work out" messages)
204 - don't reset volume, pan, pitch and MIDI controller values on
205 instrument or audio output device change
207 * LSCP server:
208 - fixed some crashes (patch by Grigor Iliev, fixes #19)
209 - fixed LSCP event "CHANNEL_INFO" notification
210 (e.g. did not notify on volume changes or MIDI program change events)
212 * linuxsampler application:
213 - added command line parameters --lscp-addr and --lscp-port to override
214 default IP address and port of LSCP server
216 Version 0.3.1 (24 May 2005)
218 * initial release

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