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Revision 1046 - (hide annotations) (download)
Sat Feb 10 12:00:55 2007 UTC (12 years, 11 months ago) by persson
File size: 10933 byte(s)
* EG fine tuning: when attack is zero the EG starts at a level above
  max sustain level, which means that there is a decay phase even if
  sustain is 100%

1 schoenebeck 947 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 schoenebeck 973 (MIDI bank, MIDI program) pairs with arbitrary
7 schoenebeck 947 (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 schoenebeck 973 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 iliev 981 - new notification events for tracking audio/MIDI device changes,
21     MIDI instrument map changes and MIDI instrument changes
22 schoenebeck 990 - 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 schoenebeck 1001 - 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 schoenebeck 1005 - global (sampler wide) volume can now be controlled at runtime
30 schoenebeck 947
31     * MIDI driver:
32     - dispatch bank select (MSB and LSB) messages
33    
34 persson 951 * 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 persson 1038 - playback is no longer disabled during instrument loading
39     - all notes playing on a channel that changes its instrument keep
40     playing with the old instrument until they get a note off
41     command
42 persson 1039 - EG fix: a release value of zero could cause noises or crash
43 schoenebeck 1041 - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
44 persson 1046 - EG fine tuning: when attack is zero the EG starts at a level
45     above max sustain level, which means that there is a decay phase
46     even if sustain is 100%
47 persson 951
48 iliev 959 * Bug fixes:
49     - fixed crash occurring on certain LSCP scripts (Bug 39)
50 persson 1038 - another thread safety fix for lscp "load engine" and "set
51     channel audio output device"
52 iliev 959
53 schoenebeck 937 Version 0.4.0 (24 November 2006)
54 persson 696
55 schoenebeck 697 * packaging changes:
56 capela 868 - changed deprecated copyright attribute to license; added ldconfig
57     to post-(un)install steps; added devel package for liblinuxsampler;
58     to linuxsampler.spec (RPM)
59 schoenebeck 697 - install necessary development header files for allowing 3rd party
60     applications to link against liblinuxsampler
61     - liblinuxsampler's API documentation can be generated with 'make docs'
62     (Doxygen required)
63 schoenebeck 715 - added benchmark to automatically detect the best triangle LFO
64     implementation (currently either an integer math solution or a
65     di-harmonic approximation), automatic detection can be overriden
66     with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
67     configure script argument though (mandatory for cross-compilation)
68 schoenebeck 829 - do not automatically pick optimized gcc flags if the user already
69     provided some on his own (as CXXFLAGS)
70 schoenebeck 849 - added compile time option to disable processing of All-Notes-Off MIDI
71     messages
72 schoenebeck 852 - added compile time options to allow disabling the various audio and
73     MIDI drivers
74 schoenebeck 909 - fixed automatic GCC CPU switch detection on PPC
75     (patch by Ebrahim Mayat)
76 schoenebeck 697
77 persson 696 * Gigasampler format engine:
78 schoenebeck 738 - extensive synthesis optimization
79     (reimplementation of EGs and LFO(s), removed synthesis parameter
80     prerendering and the synthesis parameter matrix in general, splitting
81     each audio fragment into subfragments now where each subfragment uses
82 persson 830 constant pitch and filter coefficients. The volume coefficient is
83     linearly interpolated inside a subfragment, unless
84     --disable-interpolate-volume is set.)
85 persson 696 - fine tuning of the EG modulation parameters
86 persson 729 - improved filter cutoff calculation by adding support for the
87     following gig parameters: Cutoff freq (used when no cutoff
88     controller is defined), Control invert, Minimum cutoff, Velocity
89 persson 791 curve and Velocity range. The keyboard tracking now scales
90     cutoff frequency instead of resonance.
91 persson 877 - added support for gig parameter Resonance.
92 schoenebeck 775 - fixed bug in sysex handling (patch by Juan Linietsky)
93 schoenebeck 781 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
94     which can be overridden with --enable-global-attenuation
95 persson 783 - EG fixes: made the length of "attack hold" stage more
96     accurate. Release stage can now start before attack stage
97 persson 797 ends. Cancel release didn't work when sustain was zero. Attack
98     time now has a minimal value to prevent clicks.
99 persson 799 - fixed pitch changes larger than one octave
100 schoenebeck 829 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
101     - implemented portamento mode and solo mode (a.k.a 'mono mode'):
102     all modes can be altered via standard GM messages, that is CC5 for
103     altering portamento time, CC65 for enabling / disabling portamento
104     mode, CC126 for enabling solo mode and CC127 for disabling solo mode
105 persson 832 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
106     parameter) and crossfade
107 persson 831 - added support for the "attenuation controller threshold" gig
108     parameter
109 persson 832 - added smoothing of volume changes caused by control change
110     messages
111 persson 865 - sample loop parameters are now taken from the DimensionRegion
112     instead of the wave chunk
113     - fixed keyswitching for v3 gigs with a number of keyswitch splits
114     not equal to a power of two
115 persson 877 - reimplementation of the filter algorithm. The new filter is more
116     accurate and supports all gig filter types, including bandreject
117     and lowpass turbo.
118 persson 903 - real support for 24 bit samples - samples are not truncated to
119     16 bits anymore
120     - support for aftertouch (channel pressure, not polyphonic
121     aftertouch)
122 persson 922 - LFO1 behaviour fixed (dampening from max volume instead of
123     amplifying from 0)
124 persson 696
125 schoenebeck 711 * LSCP server:
126     - fixed application exit on broken pipe error (fixes bug #20)
127 iliev 793 - fixed the notification messages delay due to lack of
128     network activity (fixes bug #26)
129 schoenebeck 826 - fixed parser bug which occured on space(s) within device parameters
130     (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
131 schoenebeck 711
132 schoenebeck 838 * audio driver:
133     - added aRts audio output driver (by no means RT safe)
134    
135 schoenebeck 775 * MIDI driver:
136     - fixed legacy sysex code which caused dispatching of MIDI SysEx
137     messages several times instead of once
138 schoenebeck 906 - API extension for MIDI drivers which already supply exact time stamps
139     for events (i.e. for offline rendering based MIDI drivers)
140 persson 922 - added checks for bad MIDI data
141 schoenebeck 775
142 schoenebeck 900 * linuxsampler application:
143     - show available sampler engine types on startup
144    
145 schoenebeck 705 * general changes:
146     - support for muting sampler channels and solo mode of the same, two new
147     LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
148     fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
149     introduced for this, the behavior is the same like on a mixer console
150 iliev 716 (patch by Grigor Iliev, a bit adjusted). Also added configure option
151     --enable-process-muted-channels which can be used to enable the
152     processing of muted channels.
153 iliev 777 - support for sostenuto pedal
154 iliev 779 - support for monitoring the total number of active voices
155 iliev 778 (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
156     SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
157 persson 835 - fixed some memory management errors
158 persson 841 - fixed some concurrency problems that could lead to crashes when
159     LSCP commands were executed
160 schoenebeck 925 - fixed crash when instrument loading failed previously on the same
161     sampler channel (fixes bug #36)
162 schoenebeck 705
163 schoenebeck 692 Version 0.3.3 (15 July 2005)
164 schoenebeck 686
165     * packaging changes:
166     - fixed compilation with gcc 4.0
167    
168 schoenebeck 687 * Gigasampler format engine:
169     - LFO preprocessing was performed even though the respective LFO was
170     disabled by the instrument patch (minor efficiency fix)
171 schoenebeck 688 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
172     for volume ramp downs in the same fragment (needed for current voice
173     stealing implementation) then simply inform the user with a warning
174     about possible click sounds and reduce the volume ramp down
175     appropriately instead of cancelling the audio device connection
176 schoenebeck 687
177 schoenebeck 677 Version 0.3.2 (24 June 2005)
178 schoenebeck 609
179     * packaging changes:
180     - updated autotools build files to compile on OS X
181     (conditional compilation of CoreMIDI and MidiShare drivers)
182 schoenebeck 617 - hand-crafted assembly optimization code can be disabled with
183     './configure --disable-asm' (definitely not recommended)
184 schoenebeck 654 - fixed 'make dist' rule to include all necessary files
185     - require automake (>= 1.5) for 'make -f Makefile.cvs'
186     (due to 'dist-bzip2' automake option)
187 schoenebeck 649
188     * Gigasampler format engine:
189     - support for the gig parameters for "release velocity response" curves
190     - fine tuning of the EGADSR envelope
191     - volume of release triggered samples now depends on note-on velocity,
192     note length and gig parameter "release trigger decay" instead of
193     note-off velocity.
194 schoenebeck 663 - revised voice stealing
195     (fixes crash and endless loop caused by voice stealing)
196 schoenebeck 659 - don't reset scale tuning on instrument or audio output device change
197 schoenebeck 668 - handle key group conflicts right at the beginning of each fragment
198     instead of when the respective voice is actually launched
199     (fixes undefined behavior if stolen voices belonged to a key group -
200     this case was followed by a "killed voice survived" error message)
201 schoenebeck 669 - fixed minor issue with null/silence samples
202     (those stole voices even though they don't need a voice at all which
203     resulted in "voice stealing didn't work out" messages)
204 schoenebeck 670 - don't reset volume, pan, pitch and MIDI controller values on
205     instrument or audio output device change
206 schoenebeck 654
207 schoenebeck 620 * LSCP server:
208 schoenebeck 654 - fixed some crashes (patch by Grigor Iliev, fixes #19)
209 schoenebeck 660 - fixed LSCP event "CHANNEL_INFO" notification
210 schoenebeck 670 (e.g. did not notify on volume changes or MIDI program change events)
211 schoenebeck 609
212 schoenebeck 668 * linuxsampler application:
213     - added command line parameters --lscp-addr and --lscp-port to override
214     default IP address and port of LSCP server
215    
216 schoenebeck 579 Version 0.3.1 (24 May 2005)
217    
218     * initial release

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