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Contents of /linuxsampler/trunk/ChangeLog

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Revision 947 - (show annotations) (download)
Mon Nov 27 21:34:55 2006 UTC (13 years, 6 months ago) by schoenebeck
File size: 9210 byte(s)
* implemented MIDI instrument mapping according to latest LSCP draft

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

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