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Contents of /linuxsampler/trunk/ChangeLog

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Revision 1130 - (show annotations) (download)
Sun Mar 25 18:59:14 2007 UTC (17 years ago) by iliev
File size: 11379 byte(s)
* Implemented new, improved notification system

1 Version CVS HEAD (?)
2
3 * packaging changes:
4 - only the API relevant header (and source) files will be exported to
5 the Doxygen API documentation (explicitly listed in Doxyfile.in)
6
7 * general changes:
8 - replaced the old, confusing MIDI program change mechanism by a
9 flexible MIDI instrument mapper which allows to map arbitrary
10 (MIDI bank, MIDI program) pairs with arbitrary
11 (engine type, instrument file, file index) triplets which will be
12 loaded on the respective channel when such MIDI program change
13 messages arrive, beside that, each entry allows to define a life-time
14 strategy for the instrument, so the user can define whether the
15 instrument should i.e. be permanently loaded (to be able to switch
16 quickly among sounds) or i.e. loaded just on demand when the
17 respective program change arrives (to safe RAM space), as well as a
18 global volume factor for each entry, so the user can adjust the volume
19 dynamic of his mapped instrument collection without having to modify
20 the instrument files, also one can manage arbitrary amount of such
21 MIDI instrument maps and assign each sampler channel individually
22 a certain map, so that i.e. separation of normal instruments and
23 drumkits is possible
24 - new notification events for tracking changes to audio/MIDI devices,
25 MIDI instrument maps, MIDI instruments, FX sends, global volume.
26 - sampler was limited to load max. 200 instruments in the background
27 due to a constant size RingBuffer FIFO which is now replaced by a
28 dynamic (unlimited) size std::list FIFO
29 - added FX sends, these allow to route audio signals to arbitrary audio
30 output channels for being processed by external effect processors
31 (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
32 controllers
33 - global (sampler wide) volume can now be controlled at runtime
34 - Implemented new, improved notification system
35
36 * MIDI driver:
37 - dispatch bank select (MSB and LSB) messages
38
39 * audio driver:
40 - the ALSA audio output driver parameters now reflect the correct
41 parameter value ranges for the respective selected sound card
42 (patch by Till Wimmer, a bit fixed and extended)
43
44 * Gigasampler format engine:
45 - if a filter is used and EG2 finishes before EG1, let the voice
46 die when EG2 has finished (this fixes a problem with clicks and
47 voice starvation for some gigs)
48 - playback is no longer disabled during instrument loading
49 - all notes playing on a channel that changes its instrument keep
50 playing with the old instrument until they get a note off
51 command
52 - EG fix: a release value of zero could cause noises or crash
53 - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
54 - EG fine tuning: when attack is zero the EG starts at a level
55 above max sustain level, which means that there is a decay phase
56 even if sustain is 100%
57
58 * Bug fixes:
59 - fixed crash occurring on certain LSCP scripts (Bug 39)
60 - another thread safety fix for lscp "load engine" and "set
61 channel audio output device"
62
63 Version 0.4.0 (24 November 2006)
64
65 * packaging changes:
66 - changed deprecated copyright attribute to license; added ldconfig
67 to post-(un)install steps; added devel package for liblinuxsampler;
68 to linuxsampler.spec (RPM)
69 - install necessary development header files for allowing 3rd party
70 applications to link against liblinuxsampler
71 - liblinuxsampler's API documentation can be generated with 'make docs'
72 (Doxygen required)
73 - added benchmark to automatically detect the best triangle LFO
74 implementation (currently either an integer math solution or a
75 di-harmonic approximation), automatic detection can be overriden
76 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
77 configure script argument though (mandatory for cross-compilation)
78 - do not automatically pick optimized gcc flags if the user already
79 provided some on his own (as CXXFLAGS)
80 - added compile time option to disable processing of All-Notes-Off MIDI
81 messages
82 - added compile time options to allow disabling the various audio and
83 MIDI drivers
84 - fixed automatic GCC CPU switch detection on PPC
85 (patch by Ebrahim Mayat)
86
87 * Gigasampler format engine:
88 - extensive synthesis optimization
89 (reimplementation of EGs and LFO(s), removed synthesis parameter
90 prerendering and the synthesis parameter matrix in general, splitting
91 each audio fragment into subfragments now where each subfragment uses
92 constant pitch and filter coefficients. The volume coefficient is
93 linearly interpolated inside a subfragment, unless
94 --disable-interpolate-volume is set.)
95 - fine tuning of the EG modulation parameters
96 - improved filter cutoff calculation by adding support for the
97 following gig parameters: Cutoff freq (used when no cutoff
98 controller is defined), Control invert, Minimum cutoff, Velocity
99 curve and Velocity range. The keyboard tracking now scales
100 cutoff frequency instead of resonance.
101 - added support for gig parameter Resonance.
102 - fixed bug in sysex handling (patch by Juan Linietsky)
103 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
104 which can be overridden with --enable-global-attenuation
105 - EG fixes: made the length of "attack hold" stage more
106 accurate. Release stage can now start before attack stage
107 ends. Cancel release didn't work when sustain was zero. Attack
108 time now has a minimal value to prevent clicks.
109 - fixed pitch changes larger than one octave
110 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
111 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
112 all modes can be altered via standard GM messages, that is CC5 for
113 altering portamento time, CC65 for enabling / disabling portamento
114 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
115 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
116 parameter) and crossfade
117 - added support for the "attenuation controller threshold" gig
118 parameter
119 - added smoothing of volume changes caused by control change
120 messages
121 - sample loop parameters are now taken from the DimensionRegion
122 instead of the wave chunk
123 - fixed keyswitching for v3 gigs with a number of keyswitch splits
124 not equal to a power of two
125 - reimplementation of the filter algorithm. The new filter is more
126 accurate and supports all gig filter types, including bandreject
127 and lowpass turbo.
128 - real support for 24 bit samples - samples are not truncated to
129 16 bits anymore
130 - support for aftertouch (channel pressure, not polyphonic
131 aftertouch)
132 - LFO1 behaviour fixed (dampening from max volume instead of
133 amplifying from 0)
134
135 * LSCP server:
136 - fixed application exit on broken pipe error (fixes bug #20)
137 - fixed the notification messages delay due to lack of
138 network activity (fixes bug #26)
139 - fixed parser bug which occured on space(s) within device parameters
140 (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
141
142 * audio driver:
143 - added aRts audio output driver (by no means RT safe)
144
145 * MIDI driver:
146 - fixed legacy sysex code which caused dispatching of MIDI SysEx
147 messages several times instead of once
148 - API extension for MIDI drivers which already supply exact time stamps
149 for events (i.e. for offline rendering based MIDI drivers)
150 - added checks for bad MIDI data
151
152 * linuxsampler application:
153 - show available sampler engine types on startup
154
155 * general changes:
156 - support for muting sampler channels and solo mode of the same, two new
157 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
158 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
159 introduced for this, the behavior is the same like on a mixer console
160 (patch by Grigor Iliev, a bit adjusted). Also added configure option
161 --enable-process-muted-channels which can be used to enable the
162 processing of muted channels.
163 - support for sostenuto pedal
164 - support for monitoring the total number of active voices
165 (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
166 SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
167 - fixed some memory management errors
168 - fixed some concurrency problems that could lead to crashes when
169 LSCP commands were executed
170 - fixed crash when instrument loading failed previously on the same
171 sampler channel (fixes bug #36)
172
173 Version 0.3.3 (15 July 2005)
174
175 * packaging changes:
176 - fixed compilation with gcc 4.0
177
178 * Gigasampler format engine:
179 - LFO preprocessing was performed even though the respective LFO was
180 disabled by the instrument patch (minor efficiency fix)
181 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
182 for volume ramp downs in the same fragment (needed for current voice
183 stealing implementation) then simply inform the user with a warning
184 about possible click sounds and reduce the volume ramp down
185 appropriately instead of cancelling the audio device connection
186
187 Version 0.3.2 (24 June 2005)
188
189 * packaging changes:
190 - updated autotools build files to compile on OS X
191 (conditional compilation of CoreMIDI and MidiShare drivers)
192 - hand-crafted assembly optimization code can be disabled with
193 './configure --disable-asm' (definitely not recommended)
194 - fixed 'make dist' rule to include all necessary files
195 - require automake (>= 1.5) for 'make -f Makefile.cvs'
196 (due to 'dist-bzip2' automake option)
197
198 * Gigasampler format engine:
199 - support for the gig parameters for "release velocity response" curves
200 - fine tuning of the EGADSR envelope
201 - volume of release triggered samples now depends on note-on velocity,
202 note length and gig parameter "release trigger decay" instead of
203 note-off velocity.
204 - revised voice stealing
205 (fixes crash and endless loop caused by voice stealing)
206 - don't reset scale tuning on instrument or audio output device change
207 - handle key group conflicts right at the beginning of each fragment
208 instead of when the respective voice is actually launched
209 (fixes undefined behavior if stolen voices belonged to a key group -
210 this case was followed by a "killed voice survived" error message)
211 - fixed minor issue with null/silence samples
212 (those stole voices even though they don't need a voice at all which
213 resulted in "voice stealing didn't work out" messages)
214 - don't reset volume, pan, pitch and MIDI controller values on
215 instrument or audio output device change
216
217 * LSCP server:
218 - fixed some crashes (patch by Grigor Iliev, fixes #19)
219 - fixed LSCP event "CHANNEL_INFO" notification
220 (e.g. did not notify on volume changes or MIDI program change events)
221
222 * linuxsampler application:
223 - added command line parameters --lscp-addr and --lscp-port to override
224 default IP address and port of LSCP server
225
226 Version 0.3.1 (24 May 2005)
227
228 * initial release

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