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Contents of /linuxsampler/trunk/ChangeLog

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Revision 1001 - (show annotations) (download)
Wed Dec 27 16:17:08 2006 UTC (12 years, 9 months ago) by schoenebeck
File size: 10255 byte(s)
* implemented effect sends (also added new LSCP commands for this feature,
  updated LSCP spec document along with this commit batch as well)

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
30 * MIDI driver:
31 - dispatch bank select (MSB and LSB) messages
32
33 * Gigasampler format engine:
34 - if a filter is used and EG2 finishes before EG1, let the voice
35 die when EG2 has finished (this fixes a problem with clicks and
36 voice starvation for some gigs)
37
38 * Bug fixes:
39 - fixed crash occurring on certain LSCP scripts (Bug 39)
40
41 Version 0.4.0 (24 November 2006)
42
43 * packaging changes:
44 - changed deprecated copyright attribute to license; added ldconfig
45 to post-(un)install steps; added devel package for liblinuxsampler;
46 to linuxsampler.spec (RPM)
47 - install necessary development header files for allowing 3rd party
48 applications to link against liblinuxsampler
49 - liblinuxsampler's API documentation can be generated with 'make docs'
50 (Doxygen required)
51 - added benchmark to automatically detect the best triangle LFO
52 implementation (currently either an integer math solution or a
53 di-harmonic approximation), automatic detection can be overriden
54 with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
55 configure script argument though (mandatory for cross-compilation)
56 - do not automatically pick optimized gcc flags if the user already
57 provided some on his own (as CXXFLAGS)
58 - added compile time option to disable processing of All-Notes-Off MIDI
59 messages
60 - added compile time options to allow disabling the various audio and
61 MIDI drivers
62 - fixed automatic GCC CPU switch detection on PPC
63 (patch by Ebrahim Mayat)
64
65 * Gigasampler format engine:
66 - extensive synthesis optimization
67 (reimplementation of EGs and LFO(s), removed synthesis parameter
68 prerendering and the synthesis parameter matrix in general, splitting
69 each audio fragment into subfragments now where each subfragment uses
70 constant pitch and filter coefficients. The volume coefficient is
71 linearly interpolated inside a subfragment, unless
72 --disable-interpolate-volume is set.)
73 - fine tuning of the EG modulation parameters
74 - improved filter cutoff calculation by adding support for the
75 following gig parameters: Cutoff freq (used when no cutoff
76 controller is defined), Control invert, Minimum cutoff, Velocity
77 curve and Velocity range. The keyboard tracking now scales
78 cutoff frequency instead of resonance.
79 - added support for gig parameter Resonance.
80 - fixed bug in sysex handling (patch by Juan Linietsky)
81 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
82 which can be overridden with --enable-global-attenuation
83 - EG fixes: made the length of "attack hold" stage more
84 accurate. Release stage can now start before attack stage
85 ends. Cancel release didn't work when sustain was zero. Attack
86 time now has a minimal value to prevent clicks.
87 - fixed pitch changes larger than one octave
88 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
89 - implemented portamento mode and solo mode (a.k.a 'mono mode'):
90 all modes can be altered via standard GM messages, that is CC5 for
91 altering portamento time, CC65 for enabling / disabling portamento
92 mode, CC126 for enabling solo mode and CC127 for disabling solo mode
93 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
94 parameter) and crossfade
95 - added support for the "attenuation controller threshold" gig
96 parameter
97 - added smoothing of volume changes caused by control change
98 messages
99 - sample loop parameters are now taken from the DimensionRegion
100 instead of the wave chunk
101 - fixed keyswitching for v3 gigs with a number of keyswitch splits
102 not equal to a power of two
103 - reimplementation of the filter algorithm. The new filter is more
104 accurate and supports all gig filter types, including bandreject
105 and lowpass turbo.
106 - real support for 24 bit samples - samples are not truncated to
107 16 bits anymore
108 - support for aftertouch (channel pressure, not polyphonic
109 aftertouch)
110 - LFO1 behaviour fixed (dampening from max volume instead of
111 amplifying from 0)
112
113 * LSCP server:
114 - fixed application exit on broken pipe error (fixes bug #20)
115 - fixed the notification messages delay due to lack of
116 network activity (fixes bug #26)
117 - fixed parser bug which occured on space(s) within device parameters
118 (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
119
120 * audio driver:
121 - added aRts audio output driver (by no means RT safe)
122
123 * MIDI driver:
124 - fixed legacy sysex code which caused dispatching of MIDI SysEx
125 messages several times instead of once
126 - API extension for MIDI drivers which already supply exact time stamps
127 for events (i.e. for offline rendering based MIDI drivers)
128 - added checks for bad MIDI data
129
130 * linuxsampler application:
131 - show available sampler engine types on startup
132
133 * general changes:
134 - support for muting sampler channels and solo mode of the same, two new
135 LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
136 fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
137 introduced for this, the behavior is the same like on a mixer console
138 (patch by Grigor Iliev, a bit adjusted). Also added configure option
139 --enable-process-muted-channels which can be used to enable the
140 processing of muted channels.
141 - support for sostenuto pedal
142 - support for monitoring the total number of active voices
143 (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
144 SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
145 - fixed some memory management errors
146 - fixed some concurrency problems that could lead to crashes when
147 LSCP commands were executed
148 - fixed crash when instrument loading failed previously on the same
149 sampler channel (fixes bug #36)
150
151 Version 0.3.3 (15 July 2005)
152
153 * packaging changes:
154 - fixed compilation with gcc 4.0
155
156 * Gigasampler format engine:
157 - LFO preprocessing was performed even though the respective LFO was
158 disabled by the instrument patch (minor efficiency fix)
159 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
160 for volume ramp downs in the same fragment (needed for current voice
161 stealing implementation) then simply inform the user with a warning
162 about possible click sounds and reduce the volume ramp down
163 appropriately instead of cancelling the audio device connection
164
165 Version 0.3.2 (24 June 2005)
166
167 * packaging changes:
168 - updated autotools build files to compile on OS X
169 (conditional compilation of CoreMIDI and MidiShare drivers)
170 - hand-crafted assembly optimization code can be disabled with
171 './configure --disable-asm' (definitely not recommended)
172 - fixed 'make dist' rule to include all necessary files
173 - require automake (>= 1.5) for 'make -f Makefile.cvs'
174 (due to 'dist-bzip2' automake option)
175
176 * Gigasampler format engine:
177 - support for the gig parameters for "release velocity response" curves
178 - fine tuning of the EGADSR envelope
179 - volume of release triggered samples now depends on note-on velocity,
180 note length and gig parameter "release trigger decay" instead of
181 note-off velocity.
182 - revised voice stealing
183 (fixes crash and endless loop caused by voice stealing)
184 - don't reset scale tuning on instrument or audio output device change
185 - handle key group conflicts right at the beginning of each fragment
186 instead of when the respective voice is actually launched
187 (fixes undefined behavior if stolen voices belonged to a key group -
188 this case was followed by a "killed voice survived" error message)
189 - fixed minor issue with null/silence samples
190 (those stole voices even though they don't need a voice at all which
191 resulted in "voice stealing didn't work out" messages)
192 - don't reset volume, pan, pitch and MIDI controller values on
193 instrument or audio output device change
194
195 * LSCP server:
196 - fixed some crashes (patch by Grigor Iliev, fixes #19)
197 - fixed LSCP event "CHANNEL_INFO" notification
198 (e.g. did not notify on volume changes or MIDI program change events)
199
200 * linuxsampler application:
201 - added command line parameters --lscp-addr and --lscp-port to override
202 default IP address and port of LSCP server
203
204 Version 0.3.1 (24 May 2005)
205
206 * initial release

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