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Contents of /linuxsampler/trunk/ChangeLog

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Revision 1065 - (show annotations) (download)
Sun Mar 4 02:09:10 2007 UTC (12 years, 9 months ago) by schoenebeck
File size: 11314 byte(s)
- only the API relevant header (and source) files will be exported to
  the Doxygen API documentation (explicitly listed in Doxyfile.in)

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 audio/MIDI device changes,
25 MIDI instrument map changes and MIDI instrument changes
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
35 * MIDI driver:
36 - dispatch bank select (MSB and LSB) messages
37
38 * audio driver:
39 - the ALSA audio output driver parameters now reflect the correct
40 parameter value ranges for the respective selected sound card
41 (patch by Till Wimmer, a bit fixed and extended)
42
43 * Gigasampler format engine:
44 - if a filter is used and EG2 finishes before EG1, let the voice
45 die when EG2 has finished (this fixes a problem with clicks and
46 voice starvation for some gigs)
47 - playback is no longer disabled during instrument loading
48 - all notes playing on a channel that changes its instrument keep
49 playing with the old instrument until they get a note off
50 command
51 - EG fix: a release value of zero could cause noises or crash
52 - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
53 - EG fine tuning: when attack is zero the EG starts at a level
54 above max sustain level, which means that there is a decay phase
55 even if sustain is 100%
56
57 * Bug fixes:
58 - fixed crash occurring on certain LSCP scripts (Bug 39)
59 - another thread safety fix for lscp "load engine" and "set
60 channel audio output device"
61
62 Version 0.4.0 (24 November 2006)
63
64 * packaging changes:
65 - changed deprecated copyright attribute to license; added ldconfig
66 to post-(un)install steps; added devel package for liblinuxsampler;
67 to linuxsampler.spec (RPM)
68 - install necessary development header files for allowing 3rd party
69 applications to link against liblinuxsampler
70 - liblinuxsampler's API documentation can be generated with 'make docs'
71 (Doxygen required)
72 - added benchmark to automatically detect the best triangle LFO
73 implementation (currently either an integer math solution or a
74 di-harmonic approximation), automatic detection can be overriden
75 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
76 configure script argument though (mandatory for cross-compilation)
77 - do not automatically pick optimized gcc flags if the user already
78 provided some on his own (as CXXFLAGS)
79 - added compile time option to disable processing of All-Notes-Off MIDI
80 messages
81 - added compile time options to allow disabling the various audio and
82 MIDI drivers
83 - fixed automatic GCC CPU switch detection on PPC
84 (patch by Ebrahim Mayat)
85
86 * Gigasampler format engine:
87 - extensive synthesis optimization
88 (reimplementation of EGs and LFO(s), removed synthesis parameter
89 prerendering and the synthesis parameter matrix in general, splitting
90 each audio fragment into subfragments now where each subfragment uses
91 constant pitch and filter coefficients. The volume coefficient is
92 linearly interpolated inside a subfragment, unless
93 --disable-interpolate-volume is set.)
94 - fine tuning of the EG modulation parameters
95 - improved filter cutoff calculation by adding support for the
96 following gig parameters: Cutoff freq (used when no cutoff
97 controller is defined), Control invert, Minimum cutoff, Velocity
98 curve and Velocity range. The keyboard tracking now scales
99 cutoff frequency instead of resonance.
100 - added support for gig parameter Resonance.
101 - fixed bug in sysex handling (patch by Juan Linietsky)
102 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
103 which can be overridden with --enable-global-attenuation
104 - EG fixes: made the length of "attack hold" stage more
105 accurate. Release stage can now start before attack stage
106 ends. Cancel release didn't work when sustain was zero. Attack
107 time now has a minimal value to prevent clicks.
108 - fixed pitch changes larger than one octave
109 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
110 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
111 all modes can be altered via standard GM messages, that is CC5 for
112 altering portamento time, CC65 for enabling / disabling portamento
113 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
114 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
115 parameter) and crossfade
116 - added support for the "attenuation controller threshold" gig
117 parameter
118 - added smoothing of volume changes caused by control change
119 messages
120 - sample loop parameters are now taken from the DimensionRegion
121 instead of the wave chunk
122 - fixed keyswitching for v3 gigs with a number of keyswitch splits
123 not equal to a power of two
124 - reimplementation of the filter algorithm. The new filter is more
125 accurate and supports all gig filter types, including bandreject
126 and lowpass turbo.
127 - real support for 24 bit samples - samples are not truncated to
128 16 bits anymore
129 - support for aftertouch (channel pressure, not polyphonic
130 aftertouch)
131 - LFO1 behaviour fixed (dampening from max volume instead of
132 amplifying from 0)
133
134 * LSCP server:
135 - fixed application exit on broken pipe error (fixes bug #20)
136 - fixed the notification messages delay due to lack of
137 network activity (fixes bug #26)
138 - fixed parser bug which occured on space(s) within device parameters
139 (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
140
141 * audio driver:
142 - added aRts audio output driver (by no means RT safe)
143
144 * MIDI driver:
145 - fixed legacy sysex code which caused dispatching of MIDI SysEx
146 messages several times instead of once
147 - API extension for MIDI drivers which already supply exact time stamps
148 for events (i.e. for offline rendering based MIDI drivers)
149 - added checks for bad MIDI data
150
151 * linuxsampler application:
152 - show available sampler engine types on startup
153
154 * general changes:
155 - support for muting sampler channels and solo mode of the same, two new
156 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
157 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
158 introduced for this, the behavior is the same like on a mixer console
159 (patch by Grigor Iliev, a bit adjusted). Also added configure option
160 --enable-process-muted-channels which can be used to enable the
161 processing of muted channels.
162 - support for sostenuto pedal
163 - support for monitoring the total number of active voices
164 (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
165 SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
166 - fixed some memory management errors
167 - fixed some concurrency problems that could lead to crashes when
168 LSCP commands were executed
169 - fixed crash when instrument loading failed previously on the same
170 sampler channel (fixes bug #36)
171
172 Version 0.3.3 (15 July 2005)
173
174 * packaging changes:
175 - fixed compilation with gcc 4.0
176
177 * Gigasampler format engine:
178 - LFO preprocessing was performed even though the respective LFO was
179 disabled by the instrument patch (minor efficiency fix)
180 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
181 for volume ramp downs in the same fragment (needed for current voice
182 stealing implementation) then simply inform the user with a warning
183 about possible click sounds and reduce the volume ramp down
184 appropriately instead of cancelling the audio device connection
185
186 Version 0.3.2 (24 June 2005)
187
188 * packaging changes:
189 - updated autotools build files to compile on OS X
190 (conditional compilation of CoreMIDI and MidiShare drivers)
191 - hand-crafted assembly optimization code can be disabled with
192 './configure --disable-asm' (definitely not recommended)
193 - fixed 'make dist' rule to include all necessary files
194 - require automake (>= 1.5) for 'make -f Makefile.cvs'
195 (due to 'dist-bzip2' automake option)
196
197 * Gigasampler format engine:
198 - support for the gig parameters for "release velocity response" curves
199 - fine tuning of the EGADSR envelope
200 - volume of release triggered samples now depends on note-on velocity,
201 note length and gig parameter "release trigger decay" instead of
202 note-off velocity.
203 - revised voice stealing
204 (fixes crash and endless loop caused by voice stealing)
205 - don't reset scale tuning on instrument or audio output device change
206 - handle key group conflicts right at the beginning of each fragment
207 instead of when the respective voice is actually launched
208 (fixes undefined behavior if stolen voices belonged to a key group -
209 this case was followed by a "killed voice survived" error message)
210 - fixed minor issue with null/silence samples
211 (those stole voices even though they don't need a voice at all which
212 resulted in "voice stealing didn't work out" messages)
213 - don't reset volume, pan, pitch and MIDI controller values on
214 instrument or audio output device change
215
216 * LSCP server:
217 - fixed some crashes (patch by Grigor Iliev, fixes #19)
218 - fixed LSCP event "CHANNEL_INFO" notification
219 (e.g. did not notify on volume changes or MIDI program change events)
220
221 * linuxsampler application:
222 - added command line parameters --lscp-addr and --lscp-port to override
223 default IP address and port of LSCP server
224
225 Version 0.3.1 (24 May 2005)
226
227 * initial release

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