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Contents of /linuxsampler/trunk/ChangeLog

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Revision 973 - (show annotations) (download)
Fri Dec 15 21:40:27 2006 UTC (13 years, 9 months ago) by schoenebeck
File size: 9690 byte(s)
* revised and extended MIDI instrument mapping feature to allow managing
  arbitrary amount of maps and assigning each sampler channel individually
  to one map (this commit batch includes LSCP spec document update and
  respective implementation on LS side)

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
21 * MIDI driver:
22 - dispatch bank select (MSB and LSB) messages
24 * Gigasampler format engine:
25 - if a filter is used and EG2 finishes before EG1, let the voice
26 die when EG2 has finished (this fixes a problem with clicks and
27 voice starvation for some gigs)
29 * Bug fixes:
30 - fixed crash occurring on certain LSCP scripts (Bug 39)
32 Version 0.4.0 (24 November 2006)
34 * packaging changes:
35 - changed deprecated copyright attribute to license; added ldconfig
36 to post-(un)install steps; added devel package for liblinuxsampler;
37 to linuxsampler.spec (RPM)
38 - install necessary development header files for allowing 3rd party
39 applications to link against liblinuxsampler
40 - liblinuxsampler's API documentation can be generated with 'make docs'
41 (Doxygen required)
42 - added benchmark to automatically detect the best triangle LFO
43 implementation (currently either an integer math solution or a
44 di-harmonic approximation), automatic detection can be overriden
45 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
46 configure script argument though (mandatory for cross-compilation)
47 - do not automatically pick optimized gcc flags if the user already
48 provided some on his own (as CXXFLAGS)
49 - added compile time option to disable processing of All-Notes-Off MIDI
50 messages
51 - added compile time options to allow disabling the various audio and
52 MIDI drivers
53 - fixed automatic GCC CPU switch detection on PPC
54 (patch by Ebrahim Mayat)
56 * Gigasampler format engine:
57 - extensive synthesis optimization
58 (reimplementation of EGs and LFO(s), removed synthesis parameter
59 prerendering and the synthesis parameter matrix in general, splitting
60 each audio fragment into subfragments now where each subfragment uses
61 constant pitch and filter coefficients. The volume coefficient is
62 linearly interpolated inside a subfragment, unless
63 --disable-interpolate-volume is set.)
64 - fine tuning of the EG modulation parameters
65 - improved filter cutoff calculation by adding support for the
66 following gig parameters: Cutoff freq (used when no cutoff
67 controller is defined), Control invert, Minimum cutoff, Velocity
68 curve and Velocity range. The keyboard tracking now scales
69 cutoff frequency instead of resonance.
70 - added support for gig parameter Resonance.
71 - fixed bug in sysex handling (patch by Juan Linietsky)
72 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
73 which can be overridden with --enable-global-attenuation
74 - EG fixes: made the length of "attack hold" stage more
75 accurate. Release stage can now start before attack stage
76 ends. Cancel release didn't work when sustain was zero. Attack
77 time now has a minimal value to prevent clicks.
78 - fixed pitch changes larger than one octave
79 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
80 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
81 all modes can be altered via standard GM messages, that is CC5 for
82 altering portamento time, CC65 for enabling / disabling portamento
83 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
84 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
85 parameter) and crossfade
86 - added support for the "attenuation controller threshold" gig
87 parameter
88 - added smoothing of volume changes caused by control change
89 messages
90 - sample loop parameters are now taken from the DimensionRegion
91 instead of the wave chunk
92 - fixed keyswitching for v3 gigs with a number of keyswitch splits
93 not equal to a power of two
94 - reimplementation of the filter algorithm. The new filter is more
95 accurate and supports all gig filter types, including bandreject
96 and lowpass turbo.
97 - real support for 24 bit samples - samples are not truncated to
98 16 bits anymore
99 - support for aftertouch (channel pressure, not polyphonic
100 aftertouch)
101 - LFO1 behaviour fixed (dampening from max volume instead of
102 amplifying from 0)
104 * LSCP server:
105 - fixed application exit on broken pipe error (fixes bug #20)
106 - fixed the notification messages delay due to lack of
107 network activity (fixes bug #26)
108 - fixed parser bug which occured on space(s) within device parameters
111 * audio driver:
112 - added aRts audio output driver (by no means RT safe)
114 * MIDI driver:
115 - fixed legacy sysex code which caused dispatching of MIDI SysEx
116 messages several times instead of once
117 - API extension for MIDI drivers which already supply exact time stamps
118 for events (i.e. for offline rendering based MIDI drivers)
119 - added checks for bad MIDI data
121 * linuxsampler application:
122 - show available sampler engine types on startup
124 * general changes:
125 - support for muting sampler channels and solo mode of the same, two new
126 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
127 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
128 introduced for this, the behavior is the same like on a mixer console
129 (patch by Grigor Iliev, a bit adjusted). Also added configure option
130 --enable-process-muted-channels which can be used to enable the
131 processing of muted channels.
132 - support for sostenuto pedal
133 - support for monitoring the total number of active voices
136 - fixed some memory management errors
137 - fixed some concurrency problems that could lead to crashes when
138 LSCP commands were executed
139 - fixed crash when instrument loading failed previously on the same
140 sampler channel (fixes bug #36)
142 Version 0.3.3 (15 July 2005)
144 * packaging changes:
145 - fixed compilation with gcc 4.0
147 * Gigasampler format engine:
148 - LFO preprocessing was performed even though the respective LFO was
149 disabled by the instrument patch (minor efficiency fix)
150 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
151 for volume ramp downs in the same fragment (needed for current voice
152 stealing implementation) then simply inform the user with a warning
153 about possible click sounds and reduce the volume ramp down
154 appropriately instead of cancelling the audio device connection
156 Version 0.3.2 (24 June 2005)
158 * packaging changes:
159 - updated autotools build files to compile on OS X
160 (conditional compilation of CoreMIDI and MidiShare drivers)
161 - hand-crafted assembly optimization code can be disabled with
162 './configure --disable-asm' (definitely not recommended)
163 - fixed 'make dist' rule to include all necessary files
164 - require automake (>= 1.5) for 'make -f Makefile.cvs'
165 (due to 'dist-bzip2' automake option)
167 * Gigasampler format engine:
168 - support for the gig parameters for "release velocity response" curves
169 - fine tuning of the EGADSR envelope
170 - volume of release triggered samples now depends on note-on velocity,
171 note length and gig parameter "release trigger decay" instead of
172 note-off velocity.
173 - revised voice stealing
174 (fixes crash and endless loop caused by voice stealing)
175 - don't reset scale tuning on instrument or audio output device change
176 - handle key group conflicts right at the beginning of each fragment
177 instead of when the respective voice is actually launched
178 (fixes undefined behavior if stolen voices belonged to a key group -
179 this case was followed by a "killed voice survived" error message)
180 - fixed minor issue with null/silence samples
181 (those stole voices even though they don't need a voice at all which
182 resulted in "voice stealing didn't work out" messages)
183 - don't reset volume, pan, pitch and MIDI controller values on
184 instrument or audio output device change
186 * LSCP server:
187 - fixed some crashes (patch by Grigor Iliev, fixes #19)
188 - fixed LSCP event "CHANNEL_INFO" notification
189 (e.g. did not notify on volume changes or MIDI program change events)
191 * linuxsampler application:
192 - added command line parameters --lscp-addr and --lscp-port to override
193 default IP address and port of LSCP server
195 Version 0.3.1 (24 May 2005)
197 * initial release

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