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Contents of /linuxsampler/trunk/ChangeLog

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Revision 1005 - (show annotations) (download)
Fri Dec 29 20:06:14 2006 UTC (17 years, 3 months ago) by schoenebeck
File size: 10323 byte(s)
* global volume can now be altered at runtime
  (added two new LSCP commands for this, LSCP specs updated)

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 - 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
30
31 * MIDI driver:
32 - dispatch bank select (MSB and LSB) messages
33
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
39 * Bug fixes:
40 - fixed crash occurring on certain LSCP scripts (Bug 39)
41
42 Version 0.4.0 (24 November 2006)
43
44 * packaging changes:
45 - changed deprecated copyright attribute to license; added ldconfig
46 to post-(un)install steps; added devel package for liblinuxsampler;
47 to linuxsampler.spec (RPM)
48 - install necessary development header files for allowing 3rd party
49 applications to link against liblinuxsampler
50 - liblinuxsampler's API documentation can be generated with 'make docs'
51 (Doxygen required)
52 - added benchmark to automatically detect the best triangle LFO
53 implementation (currently either an integer math solution or a
54 di-harmonic approximation), automatic detection can be overriden
55 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
56 configure script argument though (mandatory for cross-compilation)
57 - do not automatically pick optimized gcc flags if the user already
58 provided some on his own (as CXXFLAGS)
59 - added compile time option to disable processing of All-Notes-Off MIDI
60 messages
61 - added compile time options to allow disabling the various audio and
62 MIDI drivers
63 - fixed automatic GCC CPU switch detection on PPC
64 (patch by Ebrahim Mayat)
65
66 * Gigasampler format engine:
67 - extensive synthesis optimization
68 (reimplementation of EGs and LFO(s), removed synthesis parameter
69 prerendering and the synthesis parameter matrix in general, splitting
70 each audio fragment into subfragments now where each subfragment uses
71 constant pitch and filter coefficients. The volume coefficient is
72 linearly interpolated inside a subfragment, unless
73 --disable-interpolate-volume is set.)
74 - fine tuning of the EG modulation parameters
75 - improved filter cutoff calculation by adding support for the
76 following gig parameters: Cutoff freq (used when no cutoff
77 controller is defined), Control invert, Minimum cutoff, Velocity
78 curve and Velocity range. The keyboard tracking now scales
79 cutoff frequency instead of resonance.
80 - added support for gig parameter Resonance.
81 - fixed bug in sysex handling (patch by Juan Linietsky)
82 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
83 which can be overridden with --enable-global-attenuation
84 - EG fixes: made the length of "attack hold" stage more
85 accurate. Release stage can now start before attack stage
86 ends. Cancel release didn't work when sustain was zero. Attack
87 time now has a minimal value to prevent clicks.
88 - fixed pitch changes larger than one octave
89 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
90 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
91 all modes can be altered via standard GM messages, that is CC5 for
92 altering portamento time, CC65 for enabling / disabling portamento
93 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
94 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
95 parameter) and crossfade
96 - added support for the "attenuation controller threshold" gig
97 parameter
98 - added smoothing of volume changes caused by control change
99 messages
100 - sample loop parameters are now taken from the DimensionRegion
101 instead of the wave chunk
102 - fixed keyswitching for v3 gigs with a number of keyswitch splits
103 not equal to a power of two
104 - reimplementation of the filter algorithm. The new filter is more
105 accurate and supports all gig filter types, including bandreject
106 and lowpass turbo.
107 - real support for 24 bit samples - samples are not truncated to
108 16 bits anymore
109 - support for aftertouch (channel pressure, not polyphonic
110 aftertouch)
111 - LFO1 behaviour fixed (dampening from max volume instead of
112 amplifying from 0)
113
114 * LSCP server:
115 - fixed application exit on broken pipe error (fixes bug #20)
116 - fixed the notification messages delay due to lack of
117 network activity (fixes bug #26)
118 - fixed parser bug which occured on space(s) within device parameters
119 (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
120
121 * audio driver:
122 - added aRts audio output driver (by no means RT safe)
123
124 * MIDI driver:
125 - fixed legacy sysex code which caused dispatching of MIDI SysEx
126 messages several times instead of once
127 - API extension for MIDI drivers which already supply exact time stamps
128 for events (i.e. for offline rendering based MIDI drivers)
129 - added checks for bad MIDI data
130
131 * linuxsampler application:
132 - show available sampler engine types on startup
133
134 * general changes:
135 - support for muting sampler channels and solo mode of the same, two new
136 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
137 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
138 introduced for this, the behavior is the same like on a mixer console
139 (patch by Grigor Iliev, a bit adjusted). Also added configure option
140 --enable-process-muted-channels which can be used to enable the
141 processing of muted channels.
142 - support for sostenuto pedal
143 - support for monitoring the total number of active voices
144 (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
145 SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
146 - fixed some memory management errors
147 - fixed some concurrency problems that could lead to crashes when
148 LSCP commands were executed
149 - fixed crash when instrument loading failed previously on the same
150 sampler channel (fixes bug #36)
151
152 Version 0.3.3 (15 July 2005)
153
154 * packaging changes:
155 - fixed compilation with gcc 4.0
156
157 * Gigasampler format engine:
158 - LFO preprocessing was performed even though the respective LFO was
159 disabled by the instrument patch (minor efficiency fix)
160 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
161 for volume ramp downs in the same fragment (needed for current voice
162 stealing implementation) then simply inform the user with a warning
163 about possible click sounds and reduce the volume ramp down
164 appropriately instead of cancelling the audio device connection
165
166 Version 0.3.2 (24 June 2005)
167
168 * packaging changes:
169 - updated autotools build files to compile on OS X
170 (conditional compilation of CoreMIDI and MidiShare drivers)
171 - hand-crafted assembly optimization code can be disabled with
172 './configure --disable-asm' (definitely not recommended)
173 - fixed 'make dist' rule to include all necessary files
174 - require automake (>= 1.5) for 'make -f Makefile.cvs'
175 (due to 'dist-bzip2' automake option)
176
177 * Gigasampler format engine:
178 - support for the gig parameters for "release velocity response" curves
179 - fine tuning of the EGADSR envelope
180 - volume of release triggered samples now depends on note-on velocity,
181 note length and gig parameter "release trigger decay" instead of
182 note-off velocity.
183 - revised voice stealing
184 (fixes crash and endless loop caused by voice stealing)
185 - don't reset scale tuning on instrument or audio output device change
186 - handle key group conflicts right at the beginning of each fragment
187 instead of when the respective voice is actually launched
188 (fixes undefined behavior if stolen voices belonged to a key group -
189 this case was followed by a "killed voice survived" error message)
190 - fixed minor issue with null/silence samples
191 (those stole voices even though they don't need a voice at all which
192 resulted in "voice stealing didn't work out" messages)
193 - don't reset volume, pan, pitch and MIDI controller values on
194 instrument or audio output device change
195
196 * LSCP server:
197 - fixed some crashes (patch by Grigor Iliev, fixes #19)
198 - fixed LSCP event "CHANNEL_INFO" notification
199 (e.g. did not notify on volume changes or MIDI program change events)
200
201 * linuxsampler application:
202 - added command line parameters --lscp-addr and --lscp-port to override
203 default IP address and port of LSCP server
204
205 Version 0.3.1 (24 May 2005)
206
207 * initial release

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