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revision 685 by persson, Tue Jul 5 19:30:37 2005 UTC revision 1297 by iliev, Thu Aug 16 15:55:21 2007 UTC
# Line 1  Line 1 
1    Version CVS HEAD (?)
2    
3      * packaging changes:
4        - config.h is not going to be installed along with liblinuxsampler's
5          API header files anymore
6        - only the API relevant header (and source) files will be exported to
7          the Doxygen API documentation (explicitly listed in Doxyfile.in)
8        - added completely new XCode project files for Mac OSX which is now
9          capable to execute our autoconf environment, thus no need anymore
10          to maintain the compile time configuration file (osx/version.h) for
11          OSX manually (patch by Toshi Nagata)
12    
13      * general changes:
14        - replaced the old, confusing MIDI program change mechanism by a
15          flexible MIDI instrument mapper which allows to map arbitrary
16          (MIDI bank, MIDI program) pairs with arbitrary
17          (engine type, instrument file, file index) triplets which will be
18          loaded on the respective channel when such MIDI program change
19          messages arrive, beside that, each entry allows to define a life-time
20          strategy for the instrument, so the user can define whether the
21          instrument should i.e. be permanently loaded (to be able to switch
22          quickly among sounds) or i.e. loaded just on demand when the
23          respective program change arrives (to safe RAM space), as well as a
24          global volume factor for each entry, so the user can adjust the volume
25          dynamic of his mapped instrument collection without having to modify
26          the instrument files, also one can manage arbitrary amount of such
27          MIDI instrument maps and assign each sampler channel individually
28          a certain map, so that i.e. separation of normal instruments and
29          drumkits is possible
30        - new notification events for tracking changes to audio/MIDI devices,
31          MIDI instrument maps, MIDI instruments, FX sends, global volume.
32        - sampler was limited to load max. 200 instruments in the background
33          due to a constant size RingBuffer FIFO which is now replaced by a
34          dynamic (unlimited) size std::list FIFO
35        - added FX sends, these allow to route audio signals to arbitrary audio
36          output channels for being processed by external effect processors
37          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
38          controllers
39        - global (sampler wide) volume can now be controlled at runtime
40        - Implemented new, improved notification system
41        - fixed compilation errors regarding OSX
42          (patch by Toshi Nagata)
43        - implemented instruments database
44        - added highly experimental support for on-the-fly instrument editing
45          within the sampler's process (by using instrument editor plugins),
46          you'll notice the new "Registered instrument editors:" message on
47          startup, added a new LSCP command "EDIT INSTRUMENT <sampler-channel>"
48          to spawn a matching instrument editor for the instrument on the
49          given sampler channel, the plugin path can be overridden at compile
50          time with ./configure --enable-plugin-dir=/some/dir
51        - fixed several issues in fundamental "Thread" class: set scheduling
52          policy and priority on thread level, set a minimum stack size for
53          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
54          threads simply inherited properties of starting thread instead of
55          setting their own policy and priority
56        - minor fix in our automatic stack trace mechanism on crashes, the
57          main process did not wait for the stack trace process to finish
58          its output
59        - fixed some minor memory leaks
60        - reenabled assembly features support, at the moment only for
61          enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
62    
63      * MIDI driver:
64        - dispatch bank select (MSB and LSB) messages
65    
66      * audio driver:
67        - the ALSA audio output driver parameters now reflect the correct
68          parameter value ranges for the respective selected sound card
69          (patch by Till Wimmer, a bit fixed and extended)
70    
71      * Gigasampler format engine:
72        - if a filter is used and EG2 finishes before EG1, let the voice
73          die when EG2 has finished (this fixes a problem with clicks and
74          voice starvation for some gigs)
75        - playback is no longer disabled during instrument loading
76        - all notes playing on a channel that changes its instrument keep
77          playing with the old instrument until they get a note off
78          command
79        - EG fix: a release value of zero could cause noises or crash
80        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
81        - EG fine tuning: when attack is zero the EG starts at a level
82          above max sustain level, which means that there is a decay phase
83          even if sustain is 100%
84        - more EG fixes: the level could sometimes go below zero and cause
85          noises or crashes
86        - minor fix of EGDecay (patch by Toshi Nagata)
87        - fixed compiler error when --enable-override-filter-type was
88          supplied to the configure script (fixes #46)
89    
90      * LSCP server:
91        - fixed compile time error for old Bison versions
92          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
93        - parser now supports extended ASCII character set
94          (up to ASCII code 255, i.e. includes now umlauts and accents)
95        - filename arguments in LSCP commands now allow to use escape
96          sequences, that is directly literal as one of: \', \", \\, \n, \r,
97          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
98          code value like \xf2) (fixes bug #24)
99        - returns verbose syntax errors (line and column where syntax error
100          occured, the unexpected character and the actually expected, possible
101          character(s), the latter only if less than 5 possibilities)
102    
103      * Bug fixes:
104        - fixed crash occurring on certain LSCP scripts (Bug 39)
105        - another thread safety fix for lscp "load engine" and "set
106          channel audio output device"
107        - fixed a crash which occurs when reassigning the same engine
108          on a sampler channel with connected MIDI device
109        - fixed a crash which occurs when changing the number of ports of a MIDI
110          device connected to a sampler channel to number less then or equal
111          to the index of the port to which the sampler channel is connected.
112        - The previous bindings were not been disconnected when altering
113          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
114          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
115        - The active stream/voice count statistic was incorrect.
116    
117      * test cases:
118        - updated and fixed (haven't been touched in a while)
119    
120    Version 0.4.0 (24 November 2006)
121    
122      * packaging changes:
123        - changed deprecated copyright attribute to license; added ldconfig
124          to post-(un)install steps; added devel package for liblinuxsampler;
125          to linuxsampler.spec (RPM)
126        - install necessary development header files for allowing 3rd party
127          applications to link against liblinuxsampler
128        - liblinuxsampler's API documentation can be generated with 'make docs'
129          (Doxygen required)
130        - added benchmark to automatically detect the best triangle LFO
131          implementation (currently either an integer math solution or a
132          di-harmonic approximation), automatic detection can be overriden
133          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
134          configure script argument though (mandatory for cross-compilation)
135        - do not automatically pick optimized gcc flags if the user already
136          provided some on his own (as CXXFLAGS)
137        - added compile time option to disable processing of All-Notes-Off MIDI
138          messages
139        - added compile time options to allow disabling the various audio and
140          MIDI drivers
141        - fixed automatic GCC CPU switch detection on PPC
142          (patch by Ebrahim Mayat)
143    
144      * Gigasampler format engine:
145        - extensive synthesis optimization
146          (reimplementation of EGs and LFO(s), removed synthesis parameter
147          prerendering and the synthesis parameter matrix in general, splitting
148          each audio fragment into subfragments now where each subfragment uses
149          constant pitch and filter coefficients. The volume coefficient is
150          linearly interpolated inside a subfragment, unless
151          --disable-interpolate-volume is set.)
152        - fine tuning of the EG modulation parameters
153        - improved filter cutoff calculation by adding support for the
154          following gig parameters: Cutoff freq (used when no cutoff
155          controller is defined), Control invert, Minimum cutoff, Velocity
156          curve and Velocity range. The keyboard tracking now scales
157          cutoff frequency instead of resonance.
158        - added support for gig parameter Resonance.
159        - fixed bug in sysex handling (patch by Juan Linietsky)
160        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
161          which can be overridden with --enable-global-attenuation
162        - EG fixes: made the length of "attack hold" stage more
163          accurate. Release stage can now start before attack stage
164          ends. Cancel release didn't work when sustain was zero. Attack
165          time now has a minimal value to prevent clicks.
166        - fixed pitch changes larger than one octave
167        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
168        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
169          all modes can be altered via standard GM messages, that is CC5 for
170          altering portamento time, CC65 for enabling / disabling portamento
171          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
172        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
173          parameter) and crossfade
174        - added support for the "attenuation controller threshold" gig
175          parameter
176        - added smoothing of volume changes caused by control change
177          messages
178        - sample loop parameters are now taken from the DimensionRegion
179          instead of the wave chunk
180        - fixed keyswitching for v3 gigs with a number of keyswitch splits
181          not equal to a power of two
182        - reimplementation of the filter algorithm. The new filter is more
183          accurate and supports all gig filter types, including bandreject
184          and lowpass turbo.
185        - real support for 24 bit samples - samples are not truncated to
186          16 bits anymore
187        - support for aftertouch (channel pressure, not polyphonic
188          aftertouch)
189        - LFO1 behaviour fixed (dampening from max volume instead of
190          amplifying from 0)
191    
192      * LSCP server:
193        - fixed application exit on broken pipe error (fixes bug #20)
194        - fixed the notification messages delay due to lack of
195          network activity (fixes bug #26)
196        - fixed parser bug which occured on space(s) within device parameters
197          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
198    
199      * audio driver:
200        - added aRts audio output driver (by no means RT safe)
201    
202      * MIDI driver:
203        - fixed legacy sysex code which caused dispatching of MIDI SysEx
204          messages several times instead of once
205        - API extension for MIDI drivers which already supply exact time stamps
206          for events (i.e. for offline rendering based MIDI drivers)
207        - added checks for bad MIDI data
208    
209      * linuxsampler application:
210        - show available sampler engine types on startup
211    
212      * general changes:
213        - support for muting sampler channels and solo mode of the same, two new
214          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
215          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
216          introduced for this, the behavior is the same like on a mixer console
217          (patch by Grigor Iliev, a bit adjusted). Also added configure option
218          --enable-process-muted-channels which can be used to enable the
219          processing of muted channels.
220        - support for sostenuto pedal
221        - support for monitoring the total number of active voices
222          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
223          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
224        - fixed some memory management errors
225        - fixed some concurrency problems that could lead to crashes when
226          LSCP commands were executed
227        - fixed crash when instrument loading failed previously on the same
228          sampler channel (fixes bug #36)
229    
230    Version 0.3.3 (15 July 2005)
231    
232      * packaging changes:
233        - fixed compilation with gcc 4.0
234    
235      * Gigasampler format engine:
236        - LFO preprocessing was performed even though the respective LFO was
237          disabled by the instrument patch (minor efficiency fix)
238        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
239          for volume ramp downs in the same fragment (needed for current voice
240          stealing implementation) then simply inform the user with a warning
241          about possible click sounds and reduce the volume ramp down
242          appropriately instead of cancelling the audio device connection
243    
244  Version 0.3.2 (24 June 2005)  Version 0.3.2 (24 June 2005)
245    
246    * packaging changes:    * packaging changes:
# Line 8  Version 0.3.2 (24 June 2005) Line 251  Version 0.3.2 (24 June 2005)
251      - fixed 'make dist' rule to include all necessary files      - fixed 'make dist' rule to include all necessary files
252      - require automake (>= 1.5) for 'make -f Makefile.cvs'      - require automake (>= 1.5) for 'make -f Makefile.cvs'
253        (due to 'dist-bzip2' automake option)        (due to 'dist-bzip2' automake option)
     - fixed compilation with gcc 4.0  
254    
255    * Gigasampler format engine:    * Gigasampler format engine:
256      - support for the gig parameters for "release velocity response" curves      - support for the gig parameters for "release velocity response" curves

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