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revision 687 by schoenebeck, Tue Jul 12 22:37:21 2005 UTC revision 1525 by schoenebeck, Sun Nov 25 17:47:46 2007 UTC
# Line 1  Line 1 
1  Version CVS HEAD (?)  Version CVS HEAD (?)
2    
3    * packaging changes:    * packaging changes:
4        - added autoconf checks for pthread library
5        - added autoconf check for pthread bug found on certain NPTL-enabled
6          glibc versions (see Gentoo bug report #194076)
7        - added autoconf checks for MS Windows
8    
9      * general changes:
10        - bugfix: the thread used by an editor plugin didn't die when the
11          editor closed
12        - bugfix: Ringbuffer.h:
13          fill_write_space_with_null() did not zero out all the space
14          operator--() did not apply size_mask after decrementing the read_ptr
15          DEFAULT_WRAP_ELEMENTS set to 0 in order to avoid problems with
16            the _NonVolatileReader functions.
17         - bugfix: Stream.h: added a missing divide by BytesPerSample in GetWriteSpace()
18           since this function is currently only used in the stream's
19           qsort() compare function, it didn't trigger any bugs
20         Resampler.h, Synthesizer.h:
21           cubic interpolation now works in 24bit mode too
22           faster method to read 24bit words on little endian machines (x86):
23           replaced 3 byte reads + shifts with a 1 unaligned 32bit read and shift
24         Experimental support for MS Windows (MIDI input via MME, AUDIO output via ASIO)
25    
26      * AUDIO driver:
27        - added Windows ASIO low latency audio driver
28    
29      * MIDI driver:
30        - added MME Windows MIDI driver
31    
32      * LSCP server:
33        - added support for Windows style path / filenames, however with
34          forward slash path separators instead of backslash
35          (i.e. "C:/foo/bar.gig")
36        - allow naughty liblscp to send non-string device parameters within
37          apostrophes as well
38        - added new LSCP commands: "GET FILE INSTRUMENTS <file>",
39          "LIST FILE INSTRUMENTS <file>" and
40          "GET FILE INSTRUMENT INFO <file> <index>" for retrieving informations
41          about an arbitrary instrument file on the system where the sampler is
42          running on
43    
44    Version 0.5.0 (15 October 2007)
45    
46      * packaging changes:
47        - config.h is not going to be installed along with liblinuxsampler's
48          API header files anymore
49        - only the API relevant header (and source) files will be exported to
50          the Doxygen API documentation (explicitly listed in Doxyfile.in)
51        - added completely new XCode project files for Mac OSX which is now
52          capable to execute our autoconf environment, thus no need anymore
53          to maintain the compile time configuration file (osx/version.h) for
54          OSX manually (patch by Toshi Nagata)
55        - fixed buggy boolean --enable-foo / --disable-foo configure script
56          parameters
57        - global.h now only covers global definitions that are needed for the
58          C++ API header files, all implementation internal global definitions
59          are now in global_private.h
60        - atomic.h is not exposed to the C++ API anymore
61        - no need to include config.h anymore for using LS's API header files
62        - fixed warnings in API doc generation
63    
64      * general changes:
65        - replaced the old, confusing MIDI program change mechanism by a
66          flexible MIDI instrument mapper which allows to map arbitrary
67          (MIDI bank, MIDI program) pairs with arbitrary
68          (engine type, instrument file, file index) triplets which will be
69          loaded on the respective channel when such MIDI program change
70          messages arrive, beside that, each entry allows to define a life-time
71          strategy for the instrument, so the user can define whether the
72          instrument should i.e. be permanently loaded (to be able to switch
73          quickly among sounds) or i.e. loaded just on demand when the
74          respective program change arrives (to safe RAM space), as well as a
75          global volume factor for each entry, so the user can adjust the volume
76          dynamic of his mapped instrument collection without having to modify
77          the instrument files, also one can manage arbitrary amount of such
78          MIDI instrument maps and assign each sampler channel individually
79          a certain map, so that i.e. separation of normal instruments and
80          drumkits is possible
81        - new notification events for tracking changes to audio/MIDI devices,
82          MIDI instrument maps, MIDI instruments, FX sends, global volume.
83        - sampler was limited to load max. 200 instruments in the background
84          due to a constant size RingBuffer FIFO which is now replaced by a
85          dynamic (unlimited) size std::list FIFO
86        - added FX sends, these allow to route audio signals to arbitrary audio
87          output channels for being processed by external effect processors
88          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
89          controllers
90        - global (sampler wide) volume can now be controlled at runtime
91        - Implemented new, improved notification system
92        - fixed compilation errors regarding OSX
93          (patch by Toshi Nagata)
94        - implemented instruments database
95        - added support for escape sequences to the instruments database
96        - added highly experimental support for on-the-fly instrument editing
97          within the sampler's process (by using instrument editor plugins),
98          you'll notice the new "Registered instrument editors:" message on
99          startup, added a new LSCP command:
100          "EDIT CHANNEL INSTRUMENT <sampler-channel>"
101          to spawn a matching instrument editor for the instrument on the
102          given sampler channel, the plugin path can be overridden at compile
103          time with ./configure --enable-plugin-dir=/some/dir
104        - added experimental code for synchronizing instrument editors hosted
105          in the sampler's process to safely edit instruments while playing
106          without a crash (hopefully) by either suspending single regions
107          wherever possible or if unavoidable whole engine(s)
108        - fixed several issues in fundamental "Thread" class: set scheduling
109          policy and priority on thread level, set a minimum stack size for
110          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
111          threads simply inherited properties of starting thread instead of
112          setting their own policy and priority
113        - minor fix in our automatic stack trace mechanism on crashes, the
114          main process did not wait for the stack trace process to finish
115          its output
116        - fixed some minor memory leaks
117        - reenabled assembly features support, at the moment only for
118          enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
119        - minor assembly fix in x86 features detection (don't use the PIC
120          register, to avoid relocations in the text segment at runtime)
121        - POSIX callback functions of Thread.h are hidden
122    
123      * MIDI driver:
124        - dispatch bank select (MSB and LSB) messages
125    
126      * audio driver:
127        - the ALSA audio output driver parameters now reflect the correct
128          parameter value ranges for the respective selected sound card
129          (patch by Till Wimmer, a bit fixed and extended)
130    
131      * Gigasampler format engine:
132        - if a filter is used and EG2 finishes before EG1, let the voice
133          die when EG2 has finished (this fixes a problem with clicks and
134          voice starvation for some gigs)
135        - playback is no longer disabled during instrument loading
136        - all notes playing on a channel that changes its instrument keep
137          playing with the old instrument until they get a note off
138          command
139        - EG fix: a release value of zero could cause noises or crash
140        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
141        - EG fine tuning: when attack is zero the EG starts at a level
142          above max sustain level, which means that there is a decay phase
143          even if sustain is 100%
144        - more EG fixes: the level could sometimes go below zero and cause
145          noises or crashes
146        - minor fix of EGDecay (patch by Toshi Nagata)
147        - fixed compiler error when --enable-override-filter-type was
148          supplied to the configure script (fixes #46)
149        - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
150          instead of a fix value
151        - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
152          127 (solo mode) only kill voices if the respective mode really
153          changed
154    
155      * LSCP server:
156        - fixed compile time error for old Bison versions
157          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
158        - parser now supports extended ASCII character set
159          (up to ASCII code 255, i.e. includes now umlauts and accents)
160        - filename arguments in LSCP commands now allow to use escape
161          sequences, that is directly literal as one of: \', \", \\, \n, \r,
162          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
163          code value like \xf2) (fixes bug #24)
164        - the following LSCP commands now also support escape sequences for at
165          least one of their text-based parameters (i.e. name, description):
166          "ADD MIDI_INSTRUMENT_MAP", "MAP MIDI_INSTRUMENT",
167          "SET MIDI_INSTRUMENT_MAP NAME", "SET FX_SEND NAME", "CREATE FX_SEND",
168          "SET DB_INSTRUMENT_DIRECTORY NAME",
169          "SET DB_INSTRUMENT_DIRECTORY DESCRIPTION", "SET DB_INSTRUMENT NAME",
170          "SET DB_INSTRUMENT DESCRIPTION", "FIND DB_INSTRUMENTS",
171          "FIND DB_INSTRUMENT_DIRECTORIES"
172        - returns verbose syntax errors (line and column where syntax error
173          occured, the unexpected character and the actually expected, possible
174          character(s), the latter only if less than 5 possibilities)
175        - made sure that LSCP syntax is not affected by gigedit locale
176          settings
177        - bugfix regarding strings parameter lists: all comma separated lists
178          of strings were treated as being one string containing commas
179          (fixes #57)
180    
181      * Bug fixes:
182        - fixed crash occurring on certain LSCP scripts (Bug 39)
183        - another thread safety fix for lscp "load engine" and "set
184          channel audio output device"
185        - fixed a crash which occurs when reassigning the same engine
186          on a sampler channel with connected MIDI device
187        - fixed a crash which occurs when changing the number of ports of a MIDI
188          device connected to a sampler channel to number less then or equal
189          to the index of the port to which the sampler channel is connected.
190        - The previous bindings were not been disconnected when altering
191          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
192          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
193        - The active stream/voice count statistic was incorrect.
194        - notification events were not been sent for some sampler
195          channel changes
196        - added default min and max values to restrict the number of allowed
197          audio output channels and MIDI input ports
198        - the connection to the PCM interface is now closed when destroying
199          an audio output device
200        - files with slash in their path or filename could not be loaded
201    
202      * test cases:
203        - updated and fixed (haven't been touched in a while)
204    
205    Version 0.4.0 (24 November 2006)
206    
207      * packaging changes:
208        - changed deprecated copyright attribute to license; added ldconfig
209          to post-(un)install steps; added devel package for liblinuxsampler;
210          to linuxsampler.spec (RPM)
211        - install necessary development header files for allowing 3rd party
212          applications to link against liblinuxsampler
213        - liblinuxsampler's API documentation can be generated with 'make docs'
214          (Doxygen required)
215        - added benchmark to automatically detect the best triangle LFO
216          implementation (currently either an integer math solution or a
217          di-harmonic approximation), automatic detection can be overriden
218          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
219          configure script argument though (mandatory for cross-compilation)
220        - do not automatically pick optimized gcc flags if the user already
221          provided some on his own (as CXXFLAGS)
222        - added compile time option to disable processing of All-Notes-Off MIDI
223          messages
224        - added compile time options to allow disabling the various audio and
225          MIDI drivers
226        - fixed automatic GCC CPU switch detection on PPC
227          (patch by Ebrahim Mayat)
228    
229      * Gigasampler format engine:
230        - extensive synthesis optimization
231          (reimplementation of EGs and LFO(s), removed synthesis parameter
232          prerendering and the synthesis parameter matrix in general, splitting
233          each audio fragment into subfragments now where each subfragment uses
234          constant pitch and filter coefficients. The volume coefficient is
235          linearly interpolated inside a subfragment, unless
236          --disable-interpolate-volume is set.)
237        - fine tuning of the EG modulation parameters
238        - improved filter cutoff calculation by adding support for the
239          following gig parameters: Cutoff freq (used when no cutoff
240          controller is defined), Control invert, Minimum cutoff, Velocity
241          curve and Velocity range. The keyboard tracking now scales
242          cutoff frequency instead of resonance.
243        - added support for gig parameter Resonance.
244        - fixed bug in sysex handling (patch by Juan Linietsky)
245        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
246          which can be overridden with --enable-global-attenuation
247        - EG fixes: made the length of "attack hold" stage more
248          accurate. Release stage can now start before attack stage
249          ends. Cancel release didn't work when sustain was zero. Attack
250          time now has a minimal value to prevent clicks.
251        - fixed pitch changes larger than one octave
252        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
253        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
254          all modes can be altered via standard GM messages, that is CC5 for
255          altering portamento time, CC65 for enabling / disabling portamento
256          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
257        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
258          parameter) and crossfade
259        - added support for the "attenuation controller threshold" gig
260          parameter
261        - added smoothing of volume changes caused by control change
262          messages
263        - sample loop parameters are now taken from the DimensionRegion
264          instead of the wave chunk
265        - fixed keyswitching for v3 gigs with a number of keyswitch splits
266          not equal to a power of two
267        - reimplementation of the filter algorithm. The new filter is more
268          accurate and supports all gig filter types, including bandreject
269          and lowpass turbo.
270        - real support for 24 bit samples - samples are not truncated to
271          16 bits anymore
272        - support for aftertouch (channel pressure, not polyphonic
273          aftertouch)
274        - LFO1 behaviour fixed (dampening from max volume instead of
275          amplifying from 0)
276    
277      * LSCP server:
278        - fixed application exit on broken pipe error (fixes bug #20)
279        - fixed the notification messages delay due to lack of
280          network activity (fixes bug #26)
281        - fixed parser bug which occured on space(s) within device parameters
282          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
283    
284      * audio driver:
285        - added aRts audio output driver (by no means RT safe)
286    
287      * MIDI driver:
288        - fixed legacy sysex code which caused dispatching of MIDI SysEx
289          messages several times instead of once
290        - API extension for MIDI drivers which already supply exact time stamps
291          for events (i.e. for offline rendering based MIDI drivers)
292        - added checks for bad MIDI data
293    
294      * linuxsampler application:
295        - show available sampler engine types on startup
296    
297      * general changes:
298        - support for muting sampler channels and solo mode of the same, two new
299          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
300          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
301          introduced for this, the behavior is the same like on a mixer console
302          (patch by Grigor Iliev, a bit adjusted). Also added configure option
303          --enable-process-muted-channels which can be used to enable the
304          processing of muted channels.
305        - support for sostenuto pedal
306        - support for monitoring the total number of active voices
307          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
308          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
309        - fixed some memory management errors
310        - fixed some concurrency problems that could lead to crashes when
311          LSCP commands were executed
312        - fixed crash when instrument loading failed previously on the same
313          sampler channel (fixes bug #36)
314    
315    Version 0.3.3 (15 July 2005)
316    
317      * packaging changes:
318      - fixed compilation with gcc 4.0      - fixed compilation with gcc 4.0
319    
320    * Gigasampler format engine:    * Gigasampler format engine:
321      - LFO preprocessing was performed even though the respective LFO was      - LFO preprocessing was performed even though the respective LFO was
322        disabled by the instrument patch (minor efficiency fix)        disabled by the instrument patch (minor efficiency fix)
323        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
324          for volume ramp downs in the same fragment (needed for current voice
325          stealing implementation) then simply inform the user with a warning
326          about possible click sounds and reduce the volume ramp down
327          appropriately instead of cancelling the audio device connection
328    
329  Version 0.3.2 (24 June 2005)  Version 0.3.2 (24 June 2005)
330    

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