/[svn]/linuxsampler/trunk/ChangeLog
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revision 670 by schoenebeck, Tue Jun 21 18:00:52 2005 UTC revision 1046 by persson, Sat Feb 10 12:00:55 2007 UTC
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1  Version CVS HEAD (?)  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        - 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        - EG fix: a release value of zero could cause noises or crash
43        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
44        - 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    
48      * Bug fixes:
49        - fixed crash occurring on certain LSCP scripts (Bug 39)
50        - another thread safety fix for lscp "load engine" and "set
51          channel audio output device"
52    
53    Version 0.4.0 (24 November 2006)
54    
55      * packaging changes:
56        - 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        - 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        - 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        - do not automatically pick optimized gcc flags if the user already
69          provided some on his own (as CXXFLAGS)
70        - added compile time option to disable processing of All-Notes-Off MIDI
71          messages
72        - added compile time options to allow disabling the various audio and
73          MIDI drivers
74        - fixed automatic GCC CPU switch detection on PPC
75          (patch by Ebrahim Mayat)
76    
77      * Gigasampler format engine:
78        - 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          constant pitch and filter coefficients. The volume coefficient is
83          linearly interpolated inside a subfragment, unless
84          --disable-interpolate-volume is set.)
85        - fine tuning of the EG modulation parameters
86        - 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          curve and Velocity range. The keyboard tracking now scales
90          cutoff frequency instead of resonance.
91        - added support for gig parameter Resonance.
92        - fixed bug in sysex handling (patch by Juan Linietsky)
93        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
94          which can be overridden with --enable-global-attenuation
95        - EG fixes: made the length of "attack hold" stage more
96          accurate. Release stage can now start before attack stage
97          ends. Cancel release didn't work when sustain was zero. Attack
98          time now has a minimal value to prevent clicks.
99        - fixed pitch changes larger than one octave
100        - 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        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
106          parameter) and crossfade
107        - added support for the "attenuation controller threshold" gig
108          parameter
109        - added smoothing of volume changes caused by control change
110          messages
111        - 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        - 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        - 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        - LFO1 behaviour fixed (dampening from max volume instead of
123          amplifying from 0)
124    
125      * LSCP server:
126        - fixed application exit on broken pipe error (fixes bug #20)
127        - fixed the notification messages delay due to lack of
128          network activity (fixes bug #26)
129        - 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    
132      * audio driver:
133        - added aRts audio output driver (by no means RT safe)
134    
135      * MIDI driver:
136        - fixed legacy sysex code which caused dispatching of MIDI SysEx
137          messages several times instead of once
138        - API extension for MIDI drivers which already supply exact time stamps
139          for events (i.e. for offline rendering based MIDI drivers)
140        - added checks for bad MIDI data
141    
142      * linuxsampler application:
143        - show available sampler engine types on startup
144    
145      * 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          (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        - support for sostenuto pedal
154        - support for monitoring the total number of active voices
155          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
156          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
157        - fixed some memory management errors
158        - fixed some concurrency problems that could lead to crashes when
159          LSCP commands were executed
160        - fixed crash when instrument loading failed previously on the same
161          sampler channel (fixes bug #36)
162    
163    Version 0.3.3 (15 July 2005)
164    
165      * packaging changes:
166        - fixed compilation with gcc 4.0
167    
168      * Gigasampler format engine:
169        - LFO preprocessing was performed even though the respective LFO was
170          disabled by the instrument patch (minor efficiency fix)
171        - 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    
177    Version 0.3.2 (24 June 2005)
178    
179    * packaging changes:    * packaging changes:
180      - updated autotools build files to compile on OS X      - updated autotools build files to compile on OS X
181        (conditional compilation of CoreMIDI and MidiShare drivers)        (conditional compilation of CoreMIDI and MidiShare drivers)

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