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Contents of /linuxsampler/trunk/ChangeLog

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Revision 981 - (show annotations) (download)
Sun Dec 17 22:35:01 2006 UTC (17 years, 3 months ago) by iliev
File size: 9822 byte(s)
* Added new notification events for tracking audio/MIDI device changes,
MIDI instrument map changes and MIDI instrument changes

1 Version CVS HEAD (?)
2
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
23 * MIDI driver:
24 - dispatch bank select (MSB and LSB) messages
25
26 * Gigasampler format engine:
27 - if a filter is used and EG2 finishes before EG1, let the voice
28 die when EG2 has finished (this fixes a problem with clicks and
29 voice starvation for some gigs)
30
31 * Bug fixes:
32 - fixed crash occurring on certain LSCP scripts (Bug 39)
33
34 Version 0.4.0 (24 November 2006)
35
36 * packaging changes:
37 - changed deprecated copyright attribute to license; added ldconfig
38 to post-(un)install steps; added devel package for liblinuxsampler;
39 to linuxsampler.spec (RPM)
40 - install necessary development header files for allowing 3rd party
41 applications to link against liblinuxsampler
42 - liblinuxsampler's API documentation can be generated with 'make docs'
43 (Doxygen required)
44 - added benchmark to automatically detect the best triangle LFO
45 implementation (currently either an integer math solution or a
46 di-harmonic approximation), automatic detection can be overriden
47 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
48 configure script argument though (mandatory for cross-compilation)
49 - do not automatically pick optimized gcc flags if the user already
50 provided some on his own (as CXXFLAGS)
51 - added compile time option to disable processing of All-Notes-Off MIDI
52 messages
53 - added compile time options to allow disabling the various audio and
54 MIDI drivers
55 - fixed automatic GCC CPU switch detection on PPC
56 (patch by Ebrahim Mayat)
57
58 * Gigasampler format engine:
59 - extensive synthesis optimization
60 (reimplementation of EGs and LFO(s), removed synthesis parameter
61 prerendering and the synthesis parameter matrix in general, splitting
62 each audio fragment into subfragments now where each subfragment uses
63 constant pitch and filter coefficients. The volume coefficient is
64 linearly interpolated inside a subfragment, unless
65 --disable-interpolate-volume is set.)
66 - fine tuning of the EG modulation parameters
67 - improved filter cutoff calculation by adding support for the
68 following gig parameters: Cutoff freq (used when no cutoff
69 controller is defined), Control invert, Minimum cutoff, Velocity
70 curve and Velocity range. The keyboard tracking now scales
71 cutoff frequency instead of resonance.
72 - added support for gig parameter Resonance.
73 - fixed bug in sysex handling (patch by Juan Linietsky)
74 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
75 which can be overridden with --enable-global-attenuation
76 - EG fixes: made the length of "attack hold" stage more
77 accurate. Release stage can now start before attack stage
78 ends. Cancel release didn't work when sustain was zero. Attack
79 time now has a minimal value to prevent clicks.
80 - fixed pitch changes larger than one octave
81 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
82 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
83 all modes can be altered via standard GM messages, that is CC5 for
84 altering portamento time, CC65 for enabling / disabling portamento
85 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
86 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
87 parameter) and crossfade
88 - added support for the "attenuation controller threshold" gig
89 parameter
90 - added smoothing of volume changes caused by control change
91 messages
92 - sample loop parameters are now taken from the DimensionRegion
93 instead of the wave chunk
94 - fixed keyswitching for v3 gigs with a number of keyswitch splits
95 not equal to a power of two
96 - reimplementation of the filter algorithm. The new filter is more
97 accurate and supports all gig filter types, including bandreject
98 and lowpass turbo.
99 - real support for 24 bit samples - samples are not truncated to
100 16 bits anymore
101 - support for aftertouch (channel pressure, not polyphonic
102 aftertouch)
103 - LFO1 behaviour fixed (dampening from max volume instead of
104 amplifying from 0)
105
106 * LSCP server:
107 - fixed application exit on broken pipe error (fixes bug #20)
108 - fixed the notification messages delay due to lack of
109 network activity (fixes bug #26)
110 - fixed parser bug which occured on space(s) within device parameters
111 (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
112
113 * audio driver:
114 - added aRts audio output driver (by no means RT safe)
115
116 * MIDI driver:
117 - fixed legacy sysex code which caused dispatching of MIDI SysEx
118 messages several times instead of once
119 - API extension for MIDI drivers which already supply exact time stamps
120 for events (i.e. for offline rendering based MIDI drivers)
121 - added checks for bad MIDI data
122
123 * linuxsampler application:
124 - show available sampler engine types on startup
125
126 * general changes:
127 - support for muting sampler channels and solo mode of the same, two new
128 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
129 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
130 introduced for this, the behavior is the same like on a mixer console
131 (patch by Grigor Iliev, a bit adjusted). Also added configure option
132 --enable-process-muted-channels which can be used to enable the
133 processing of muted channels.
134 - support for sostenuto pedal
135 - support for monitoring the total number of active voices
136 (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
137 SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
138 - fixed some memory management errors
139 - fixed some concurrency problems that could lead to crashes when
140 LSCP commands were executed
141 - fixed crash when instrument loading failed previously on the same
142 sampler channel (fixes bug #36)
143
144 Version 0.3.3 (15 July 2005)
145
146 * packaging changes:
147 - fixed compilation with gcc 4.0
148
149 * Gigasampler format engine:
150 - LFO preprocessing was performed even though the respective LFO was
151 disabled by the instrument patch (minor efficiency fix)
152 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
153 for volume ramp downs in the same fragment (needed for current voice
154 stealing implementation) then simply inform the user with a warning
155 about possible click sounds and reduce the volume ramp down
156 appropriately instead of cancelling the audio device connection
157
158 Version 0.3.2 (24 June 2005)
159
160 * packaging changes:
161 - updated autotools build files to compile on OS X
162 (conditional compilation of CoreMIDI and MidiShare drivers)
163 - hand-crafted assembly optimization code can be disabled with
164 './configure --disable-asm' (definitely not recommended)
165 - fixed 'make dist' rule to include all necessary files
166 - require automake (>= 1.5) for 'make -f Makefile.cvs'
167 (due to 'dist-bzip2' automake option)
168
169 * Gigasampler format engine:
170 - support for the gig parameters for "release velocity response" curves
171 - fine tuning of the EGADSR envelope
172 - volume of release triggered samples now depends on note-on velocity,
173 note length and gig parameter "release trigger decay" instead of
174 note-off velocity.
175 - revised voice stealing
176 (fixes crash and endless loop caused by voice stealing)
177 - don't reset scale tuning on instrument or audio output device change
178 - handle key group conflicts right at the beginning of each fragment
179 instead of when the respective voice is actually launched
180 (fixes undefined behavior if stolen voices belonged to a key group -
181 this case was followed by a "killed voice survived" error message)
182 - fixed minor issue with null/silence samples
183 (those stole voices even though they don't need a voice at all which
184 resulted in "voice stealing didn't work out" messages)
185 - don't reset volume, pan, pitch and MIDI controller values on
186 instrument or audio output device change
187
188 * LSCP server:
189 - fixed some crashes (patch by Grigor Iliev, fixes #19)
190 - fixed LSCP event "CHANNEL_INFO" notification
191 (e.g. did not notify on volume changes or MIDI program change events)
192
193 * linuxsampler application:
194 - added command line parameters --lscp-addr and --lscp-port to override
195 default IP address and port of LSCP server
196
197 Version 0.3.1 (24 May 2005)
198
199 * initial release

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