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Revision 1147 - (hide annotations) (download)
Tue Apr 3 17:39:52 2007 UTC (16 years, 11 months ago) by persson
File size: 11474 byte(s)
* fixed some more EG bugs that could cause noises or crashes

1 schoenebeck 947 Version CVS HEAD (?)
2    
3 schoenebeck 1065 * 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 schoenebeck 947 * general changes:
8     - replaced the old, confusing MIDI program change mechanism by a
9     flexible MIDI instrument mapper which allows to map arbitrary
10 schoenebeck 973 (MIDI bank, MIDI program) pairs with arbitrary
11 schoenebeck 947 (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 schoenebeck 973 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 iliev 1108 - new notification events for tracking changes to audio/MIDI devices,
25     MIDI instrument maps, MIDI instruments, FX sends, global volume.
26 schoenebeck 990 - 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 schoenebeck 1001 - 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 schoenebeck 1005 - global (sampler wide) volume can now be controlled at runtime
34 iliev 1130 - Implemented new, improved notification system
35 schoenebeck 947
36     * MIDI driver:
37     - dispatch bank select (MSB and LSB) messages
38    
39 schoenebeck 1049 * audio driver:
40     - the ALSA audio output driver parameters now reflect the correct
41     parameter value ranges for the respective selected sound card
42     (patch by Till Wimmer, a bit fixed and extended)
43    
44 persson 951 * Gigasampler format engine:
45     - if a filter is used and EG2 finishes before EG1, let the voice
46     die when EG2 has finished (this fixes a problem with clicks and
47     voice starvation for some gigs)
48 persson 1038 - playback is no longer disabled during instrument loading
49     - all notes playing on a channel that changes its instrument keep
50     playing with the old instrument until they get a note off
51     command
52 persson 1039 - EG fix: a release value of zero could cause noises or crash
53 schoenebeck 1041 - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
54 persson 1046 - EG fine tuning: when attack is zero the EG starts at a level
55     above max sustain level, which means that there is a decay phase
56     even if sustain is 100%
57 persson 1147 - more EG fixes: the level could sometimes go below zero and cause
58     noises or crashes
59 persson 951
60 iliev 959 * Bug fixes:
61     - fixed crash occurring on certain LSCP scripts (Bug 39)
62 persson 1038 - another thread safety fix for lscp "load engine" and "set
63     channel audio output device"
64 iliev 959
65 schoenebeck 937 Version 0.4.0 (24 November 2006)
66 persson 696
67 schoenebeck 697 * packaging changes:
68 capela 868 - changed deprecated copyright attribute to license; added ldconfig
69     to post-(un)install steps; added devel package for liblinuxsampler;
70     to linuxsampler.spec (RPM)
71 schoenebeck 697 - install necessary development header files for allowing 3rd party
72     applications to link against liblinuxsampler
73     - liblinuxsampler's API documentation can be generated with 'make docs'
74     (Doxygen required)
75 schoenebeck 715 - added benchmark to automatically detect the best triangle LFO
76     implementation (currently either an integer math solution or a
77     di-harmonic approximation), automatic detection can be overriden
78     with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
79     configure script argument though (mandatory for cross-compilation)
80 schoenebeck 829 - do not automatically pick optimized gcc flags if the user already
81     provided some on his own (as CXXFLAGS)
82 schoenebeck 849 - added compile time option to disable processing of All-Notes-Off MIDI
83     messages
84 schoenebeck 852 - added compile time options to allow disabling the various audio and
85     MIDI drivers
86 schoenebeck 909 - fixed automatic GCC CPU switch detection on PPC
87     (patch by Ebrahim Mayat)
88 schoenebeck 697
89 persson 696 * Gigasampler format engine:
90 schoenebeck 738 - extensive synthesis optimization
91     (reimplementation of EGs and LFO(s), removed synthesis parameter
92     prerendering and the synthesis parameter matrix in general, splitting
93     each audio fragment into subfragments now where each subfragment uses
94 persson 830 constant pitch and filter coefficients. The volume coefficient is
95     linearly interpolated inside a subfragment, unless
96     --disable-interpolate-volume is set.)
97 persson 696 - fine tuning of the EG modulation parameters
98 persson 729 - improved filter cutoff calculation by adding support for the
99     following gig parameters: Cutoff freq (used when no cutoff
100     controller is defined), Control invert, Minimum cutoff, Velocity
101 persson 791 curve and Velocity range. The keyboard tracking now scales
102     cutoff frequency instead of resonance.
103 persson 877 - added support for gig parameter Resonance.
104 schoenebeck 775 - fixed bug in sysex handling (patch by Juan Linietsky)
105 schoenebeck 781 - added global volume attenuation of -9 dB (0.35f) to prevent clipping
106     which can be overridden with --enable-global-attenuation
107 persson 783 - EG fixes: made the length of "attack hold" stage more
108     accurate. Release stage can now start before attack stage
109 persson 797 ends. Cancel release didn't work when sustain was zero. Attack
110     time now has a minimal value to prevent clicks.
111 persson 799 - fixed pitch changes larger than one octave
112 schoenebeck 829 - fixed EG3 (pitch envelope) synthesis which was neutral all the time
113     - implemented portamento mode and solo mode (a.k.a 'mono mode'):
114     all modes can be altered via standard GM messages, that is CC5 for
115     altering portamento time, CC65 for enabling / disabling portamento
116     mode, CC126 for enabling solo mode and CC127 for disabling solo mode
117 persson 832 - fine tuning of the curves for volume (CC7), pan (CC10 and gig
118     parameter) and crossfade
119 persson 831 - added support for the "attenuation controller threshold" gig
120     parameter
121 persson 832 - added smoothing of volume changes caused by control change
122     messages
123 persson 865 - sample loop parameters are now taken from the DimensionRegion
124     instead of the wave chunk
125     - fixed keyswitching for v3 gigs with a number of keyswitch splits
126     not equal to a power of two
127 persson 877 - reimplementation of the filter algorithm. The new filter is more
128     accurate and supports all gig filter types, including bandreject
129     and lowpass turbo.
130 persson 903 - real support for 24 bit samples - samples are not truncated to
131     16 bits anymore
132     - support for aftertouch (channel pressure, not polyphonic
133     aftertouch)
134 persson 922 - LFO1 behaviour fixed (dampening from max volume instead of
135     amplifying from 0)
136 persson 696
137 schoenebeck 711 * LSCP server:
138     - fixed application exit on broken pipe error (fixes bug #20)
139 iliev 793 - fixed the notification messages delay due to lack of
140     network activity (fixes bug #26)
141 schoenebeck 826 - fixed parser bug which occured on space(s) within device parameters
142     (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
143 schoenebeck 711
144 schoenebeck 838 * audio driver:
145     - added aRts audio output driver (by no means RT safe)
146    
147 schoenebeck 775 * MIDI driver:
148     - fixed legacy sysex code which caused dispatching of MIDI SysEx
149     messages several times instead of once
150 schoenebeck 906 - API extension for MIDI drivers which already supply exact time stamps
151     for events (i.e. for offline rendering based MIDI drivers)
152 persson 922 - added checks for bad MIDI data
153 schoenebeck 775
154 schoenebeck 900 * linuxsampler application:
155     - show available sampler engine types on startup
156    
157 schoenebeck 705 * general changes:
158     - support for muting sampler channels and solo mode of the same, two new
159     LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
160     fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
161     introduced for this, the behavior is the same like on a mixer console
162 iliev 716 (patch by Grigor Iliev, a bit adjusted). Also added configure option
163     --enable-process-muted-channels which can be used to enable the
164     processing of muted channels.
165 iliev 777 - support for sostenuto pedal
166 iliev 779 - support for monitoring the total number of active voices
167 iliev 778 (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
168     SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
169 persson 835 - fixed some memory management errors
170 persson 841 - fixed some concurrency problems that could lead to crashes when
171     LSCP commands were executed
172 schoenebeck 925 - fixed crash when instrument loading failed previously on the same
173     sampler channel (fixes bug #36)
174 schoenebeck 705
175 schoenebeck 692 Version 0.3.3 (15 July 2005)
176 schoenebeck 686
177     * packaging changes:
178     - fixed compilation with gcc 4.0
179    
180 schoenebeck 687 * Gigasampler format engine:
181     - LFO preprocessing was performed even though the respective LFO was
182     disabled by the instrument patch (minor efficiency fix)
183 schoenebeck 688 - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
184     for volume ramp downs in the same fragment (needed for current voice
185     stealing implementation) then simply inform the user with a warning
186     about possible click sounds and reduce the volume ramp down
187     appropriately instead of cancelling the audio device connection
188 schoenebeck 687
189 schoenebeck 677 Version 0.3.2 (24 June 2005)
190 schoenebeck 609
191     * packaging changes:
192     - updated autotools build files to compile on OS X
193     (conditional compilation of CoreMIDI and MidiShare drivers)
194 schoenebeck 617 - hand-crafted assembly optimization code can be disabled with
195     './configure --disable-asm' (definitely not recommended)
196 schoenebeck 654 - fixed 'make dist' rule to include all necessary files
197     - require automake (>= 1.5) for 'make -f Makefile.cvs'
198     (due to 'dist-bzip2' automake option)
199 schoenebeck 649
200     * Gigasampler format engine:
201     - support for the gig parameters for "release velocity response" curves
202     - fine tuning of the EGADSR envelope
203     - volume of release triggered samples now depends on note-on velocity,
204     note length and gig parameter "release trigger decay" instead of
205     note-off velocity.
206 schoenebeck 663 - revised voice stealing
207     (fixes crash and endless loop caused by voice stealing)
208 schoenebeck 659 - don't reset scale tuning on instrument or audio output device change
209 schoenebeck 668 - handle key group conflicts right at the beginning of each fragment
210     instead of when the respective voice is actually launched
211     (fixes undefined behavior if stolen voices belonged to a key group -
212     this case was followed by a "killed voice survived" error message)
213 schoenebeck 669 - fixed minor issue with null/silence samples
214     (those stole voices even though they don't need a voice at all which
215     resulted in "voice stealing didn't work out" messages)
216 schoenebeck 670 - don't reset volume, pan, pitch and MIDI controller values on
217     instrument or audio output device change
218 schoenebeck 654
219 schoenebeck 620 * LSCP server:
220 schoenebeck 654 - fixed some crashes (patch by Grigor Iliev, fixes #19)
221 schoenebeck 660 - fixed LSCP event "CHANNEL_INFO" notification
222 schoenebeck 670 (e.g. did not notify on volume changes or MIDI program change events)
223 schoenebeck 609
224 schoenebeck 668 * linuxsampler application:
225     - added command line parameters --lscp-addr and --lscp-port to override
226     default IP address and port of LSCP server
227    
228 schoenebeck 579 Version 0.3.1 (24 May 2005)
229    
230     * initial release

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