/[svn]/linuxsampler/trunk/ChangeLog
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revision 685 by persson, Tue Jul 5 19:30:37 2005 UTC revision 1039 by persson, Sat Feb 3 20:46:44 2007 UTC
# Line 1  Line 1 
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        - 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    
44      * Bug fixes:
45        - fixed crash occurring on certain LSCP scripts (Bug 39)
46        - another thread safety fix for lscp "load engine" and "set
47          channel audio output device"
48    
49    Version 0.4.0 (24 November 2006)
50    
51      * packaging changes:
52        - changed deprecated copyright attribute to license; added ldconfig
53          to post-(un)install steps; added devel package for liblinuxsampler;
54          to linuxsampler.spec (RPM)
55        - install necessary development header files for allowing 3rd party
56          applications to link against liblinuxsampler
57        - liblinuxsampler's API documentation can be generated with 'make docs'
58          (Doxygen required)
59        - added benchmark to automatically detect the best triangle LFO
60          implementation (currently either an integer math solution or a
61          di-harmonic approximation), automatic detection can be overriden
62          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
63          configure script argument though (mandatory for cross-compilation)
64        - do not automatically pick optimized gcc flags if the user already
65          provided some on his own (as CXXFLAGS)
66        - added compile time option to disable processing of All-Notes-Off MIDI
67          messages
68        - added compile time options to allow disabling the various audio and
69          MIDI drivers
70        - fixed automatic GCC CPU switch detection on PPC
71          (patch by Ebrahim Mayat)
72    
73      * Gigasampler format engine:
74        - extensive synthesis optimization
75          (reimplementation of EGs and LFO(s), removed synthesis parameter
76          prerendering and the synthesis parameter matrix in general, splitting
77          each audio fragment into subfragments now where each subfragment uses
78          constant pitch and filter coefficients. The volume coefficient is
79          linearly interpolated inside a subfragment, unless
80          --disable-interpolate-volume is set.)
81        - fine tuning of the EG modulation parameters
82        - improved filter cutoff calculation by adding support for the
83          following gig parameters: Cutoff freq (used when no cutoff
84          controller is defined), Control invert, Minimum cutoff, Velocity
85          curve and Velocity range. The keyboard tracking now scales
86          cutoff frequency instead of resonance.
87        - added support for gig parameter Resonance.
88        - fixed bug in sysex handling (patch by Juan Linietsky)
89        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
90          which can be overridden with --enable-global-attenuation
91        - EG fixes: made the length of "attack hold" stage more
92          accurate. Release stage can now start before attack stage
93          ends. Cancel release didn't work when sustain was zero. Attack
94          time now has a minimal value to prevent clicks.
95        - fixed pitch changes larger than one octave
96        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
97        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
98          all modes can be altered via standard GM messages, that is CC5 for
99          altering portamento time, CC65 for enabling / disabling portamento
100          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
101        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
102          parameter) and crossfade
103        - added support for the "attenuation controller threshold" gig
104          parameter
105        - added smoothing of volume changes caused by control change
106          messages
107        - sample loop parameters are now taken from the DimensionRegion
108          instead of the wave chunk
109        - fixed keyswitching for v3 gigs with a number of keyswitch splits
110          not equal to a power of two
111        - reimplementation of the filter algorithm. The new filter is more
112          accurate and supports all gig filter types, including bandreject
113          and lowpass turbo.
114        - real support for 24 bit samples - samples are not truncated to
115          16 bits anymore
116        - support for aftertouch (channel pressure, not polyphonic
117          aftertouch)
118        - LFO1 behaviour fixed (dampening from max volume instead of
119          amplifying from 0)
120    
121      * LSCP server:
122        - fixed application exit on broken pipe error (fixes bug #20)
123        - fixed the notification messages delay due to lack of
124          network activity (fixes bug #26)
125        - fixed parser bug which occured on space(s) within device parameters
126          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
127    
128      * audio driver:
129        - added aRts audio output driver (by no means RT safe)
130    
131      * MIDI driver:
132        - fixed legacy sysex code which caused dispatching of MIDI SysEx
133          messages several times instead of once
134        - API extension for MIDI drivers which already supply exact time stamps
135          for events (i.e. for offline rendering based MIDI drivers)
136        - added checks for bad MIDI data
137    
138      * linuxsampler application:
139        - show available sampler engine types on startup
140    
141      * general changes:
142        - support for muting sampler channels and solo mode of the same, two new
143          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
144          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
145          introduced for this, the behavior is the same like on a mixer console
146          (patch by Grigor Iliev, a bit adjusted). Also added configure option
147          --enable-process-muted-channels which can be used to enable the
148          processing of muted channels.
149        - support for sostenuto pedal
150        - support for monitoring the total number of active voices
151          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
152          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
153        - fixed some memory management errors
154        - fixed some concurrency problems that could lead to crashes when
155          LSCP commands were executed
156        - fixed crash when instrument loading failed previously on the same
157          sampler channel (fixes bug #36)
158    
159    Version 0.3.3 (15 July 2005)
160    
161      * packaging changes:
162        - fixed compilation with gcc 4.0
163    
164      * Gigasampler format engine:
165        - LFO preprocessing was performed even though the respective LFO was
166          disabled by the instrument patch (minor efficiency fix)
167        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
168          for volume ramp downs in the same fragment (needed for current voice
169          stealing implementation) then simply inform the user with a warning
170          about possible click sounds and reduce the volume ramp down
171          appropriately instead of cancelling the audio device connection
172    
173  Version 0.3.2 (24 June 2005)  Version 0.3.2 (24 June 2005)
174    
175    * packaging changes:    * packaging changes:
# Line 8  Version 0.3.2 (24 June 2005) Line 180  Version 0.3.2 (24 June 2005)
180      - fixed 'make dist' rule to include all necessary files      - fixed 'make dist' rule to include all necessary files
181      - require automake (>= 1.5) for 'make -f Makefile.cvs'      - require automake (>= 1.5) for 'make -f Makefile.cvs'
182        (due to 'dist-bzip2' automake option)        (due to 'dist-bzip2' automake option)
     - fixed compilation with gcc 4.0  
183    
184    * Gigasampler format engine:    * Gigasampler format engine:
185      - support for the gig parameters for "release velocity response" curves      - support for the gig parameters for "release velocity response" curves

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