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revision 685 by persson, Tue Jul 5 19:30:37 2005 UTC revision 1495 by schoenebeck, Mon Nov 19 22:10:18 2007 UTC
# Line 1  Line 1 
1    Version CVS HEAD (?)
2    
3      * 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    
8      * general changes:
9        - bugfix: the thread used by an editor plugin didn't die when the
10          editor closed
11        - bugfix: Ringbuffer.h:
12          fill_write_space_with_null() did not zero out all the space
13          operator--() did not apply size_mask after decrementing the read_ptr
14          DEFAULT_WRAP_ELEMENTS set to 0 in order to avoid problems with
15            the _NonVolatileReader functions.
16         - bugfix: Stream.h: added a missing divide by BytesPerSample in GetWriteSpace()
17           since this function is currently only used in the stream's
18           qsort() compare function, it didn't trigger any bugs
19         Resampler.h, Synthesizer.h:
20           cubic interpolation now works in 24bit mode too
21           faster method to read 24bit words on little endian machines (x86):
22           replaced 3 byte reads + shifts with a 1 unaligned 32bit read and shift
23    
24      * MIDI driver:
25        - added MME Windows MIDI driver
26    
27      * LSCP server:
28        - added support for Windows style path / filenames, however with
29          forward slash path separators instead of backslash
30          (i.e. "C:/foo/bar.gig")
31        - allow naughty liblscp to send non-string device parameters within
32          apostrophes as well
33    
34    Version 0.5.0 (15 October 2007)
35    
36      * packaging changes:
37        - config.h is not going to be installed along with liblinuxsampler's
38          API header files anymore
39        - only the API relevant header (and source) files will be exported to
40          the Doxygen API documentation (explicitly listed in Doxyfile.in)
41        - added completely new XCode project files for Mac OSX which is now
42          capable to execute our autoconf environment, thus no need anymore
43          to maintain the compile time configuration file (osx/version.h) for
44          OSX manually (patch by Toshi Nagata)
45        - fixed buggy boolean --enable-foo / --disable-foo configure script
46          parameters
47        - global.h now only covers global definitions that are needed for the
48          C++ API header files, all implementation internal global definitions
49          are now in global_private.h
50        - atomic.h is not exposed to the C++ API anymore
51        - no need to include config.h anymore for using LS's API header files
52        - fixed warnings in API doc generation
53    
54      * general changes:
55        - replaced the old, confusing MIDI program change mechanism by a
56          flexible MIDI instrument mapper which allows to map arbitrary
57          (MIDI bank, MIDI program) pairs with arbitrary
58          (engine type, instrument file, file index) triplets which will be
59          loaded on the respective channel when such MIDI program change
60          messages arrive, beside that, each entry allows to define a life-time
61          strategy for the instrument, so the user can define whether the
62          instrument should i.e. be permanently loaded (to be able to switch
63          quickly among sounds) or i.e. loaded just on demand when the
64          respective program change arrives (to safe RAM space), as well as a
65          global volume factor for each entry, so the user can adjust the volume
66          dynamic of his mapped instrument collection without having to modify
67          the instrument files, also one can manage arbitrary amount of such
68          MIDI instrument maps and assign each sampler channel individually
69          a certain map, so that i.e. separation of normal instruments and
70          drumkits is possible
71        - new notification events for tracking changes to audio/MIDI devices,
72          MIDI instrument maps, MIDI instruments, FX sends, global volume.
73        - sampler was limited to load max. 200 instruments in the background
74          due to a constant size RingBuffer FIFO which is now replaced by a
75          dynamic (unlimited) size std::list FIFO
76        - added FX sends, these allow to route audio signals to arbitrary audio
77          output channels for being processed by external effect processors
78          (i.e. jack-rack), the send levels are controllable via arbitrary MIDI
79          controllers
80        - global (sampler wide) volume can now be controlled at runtime
81        - Implemented new, improved notification system
82        - fixed compilation errors regarding OSX
83          (patch by Toshi Nagata)
84        - implemented instruments database
85        - added support for escape sequences to the instruments database
86        - added highly experimental support for on-the-fly instrument editing
87          within the sampler's process (by using instrument editor plugins),
88          you'll notice the new "Registered instrument editors:" message on
89          startup, added a new LSCP command:
90          "EDIT CHANNEL INSTRUMENT <sampler-channel>"
91          to spawn a matching instrument editor for the instrument on the
92          given sampler channel, the plugin path can be overridden at compile
93          time with ./configure --enable-plugin-dir=/some/dir
94        - added experimental code for synchronizing instrument editors hosted
95          in the sampler's process to safely edit instruments while playing
96          without a crash (hopefully) by either suspending single regions
97          wherever possible or if unavoidable whole engine(s)
98        - fixed several issues in fundamental "Thread" class: set scheduling
99          policy and priority on thread level, set a minimum stack size for
100          thread (TODO: a reasonable value yet to be tested), bugfix: non-RT
101          threads simply inherited properties of starting thread instead of
102          setting their own policy and priority
103        - minor fix in our automatic stack trace mechanism on crashes, the
104          main process did not wait for the stack trace process to finish
105          its output
106        - fixed some minor memory leaks
107        - reenabled assembly features support, at the moment only for
108          enabling a fast denormal FPU mode (x86 platforms supporting SSE2)
109        - minor assembly fix in x86 features detection (don't use the PIC
110          register, to avoid relocations in the text segment at runtime)
111        - POSIX callback functions of Thread.h are hidden
112    
113      * MIDI driver:
114        - dispatch bank select (MSB and LSB) messages
115    
116      * audio driver:
117        - the ALSA audio output driver parameters now reflect the correct
118          parameter value ranges for the respective selected sound card
119          (patch by Till Wimmer, a bit fixed and extended)
120    
121      * Gigasampler format engine:
122        - if a filter is used and EG2 finishes before EG1, let the voice
123          die when EG2 has finished (this fixes a problem with clicks and
124          voice starvation for some gigs)
125        - playback is no longer disabled during instrument loading
126        - all notes playing on a channel that changes its instrument keep
127          playing with the old instrument until they get a note off
128          command
129        - EG fix: a release value of zero could cause noises or crash
130        - handle MIDI coarse tuning messages (MIDI RPN #0 MSB #2 LSB)
131        - EG fine tuning: when attack is zero the EG starts at a level
132          above max sustain level, which means that there is a decay phase
133          even if sustain is 100%
134        - more EG fixes: the level could sometimes go below zero and cause
135          noises or crashes
136        - minor fix of EGDecay (patch by Toshi Nagata)
137        - fixed compiler error when --enable-override-filter-type was
138          supplied to the configure script (fixes #46)
139        - disk thread: queue sizes are now proportional to CONFIG_MAX_STREAMS
140          instead of a fix value
141        - behavior fix: on MIDI CC# 65 (portamento on / off), 126 (mono mode),
142          127 (solo mode) only kill voices if the respective mode really
143          changed
144    
145      * LSCP server:
146        - fixed compile time error for old Bison versions
147          (i.e. v1.28 found on MacOS 10.4, patch by Toshi Nagata)
148        - parser now supports extended ASCII character set
149          (up to ASCII code 255, i.e. includes now umlauts and accents)
150        - filename arguments in LSCP commands now allow to use escape
151          sequences, that is directly literal as one of: \', \", \\, \n, \r,
152          \f, \t, \v, or as octal ASCII code value like \132, or as hex ASCII
153          code value like \xf2) (fixes bug #24)
154        - the following LSCP commands now also support escape sequences for at
155          least one of their text-based parameters (i.e. name, description):
156          "ADD MIDI_INSTRUMENT_MAP", "MAP MIDI_INSTRUMENT",
157          "SET MIDI_INSTRUMENT_MAP NAME", "SET FX_SEND NAME", "CREATE FX_SEND",
158          "SET DB_INSTRUMENT_DIRECTORY NAME",
159          "SET DB_INSTRUMENT_DIRECTORY DESCRIPTION", "SET DB_INSTRUMENT NAME",
160          "SET DB_INSTRUMENT DESCRIPTION", "FIND DB_INSTRUMENTS",
161          "FIND DB_INSTRUMENT_DIRECTORIES"
162        - returns verbose syntax errors (line and column where syntax error
163          occured, the unexpected character and the actually expected, possible
164          character(s), the latter only if less than 5 possibilities)
165        - made sure that LSCP syntax is not affected by gigedit locale
166          settings
167        - bugfix regarding strings parameter lists: all comma separated lists
168          of strings were treated as being one string containing commas
169          (fixes #57)
170    
171      * Bug fixes:
172        - fixed crash occurring on certain LSCP scripts (Bug 39)
173        - another thread safety fix for lscp "load engine" and "set
174          channel audio output device"
175        - fixed a crash which occurs when reassigning the same engine
176          on a sampler channel with connected MIDI device
177        - fixed a crash which occurs when changing the number of ports of a MIDI
178          device connected to a sampler channel to number less then or equal
179          to the index of the port to which the sampler channel is connected.
180        - The previous bindings were not been disconnected when altering
181          the ALSA_SEQ_BINDINGS parameter. Introduced a NONE keyword for
182          unsubscribing from all bindings (e.g. ALSA_SEQ_BINDINGS=NONE).
183        - The active stream/voice count statistic was incorrect.
184        - notification events were not been sent for some sampler
185          channel changes
186        - added default min and max values to restrict the number of allowed
187          audio output channels and MIDI input ports
188        - the connection to the PCM interface is now closed when destroying
189          an audio output device
190        - files with slash in their path or filename could not be loaded
191    
192      * test cases:
193        - updated and fixed (haven't been touched in a while)
194    
195    Version 0.4.0 (24 November 2006)
196    
197      * packaging changes:
198        - changed deprecated copyright attribute to license; added ldconfig
199          to post-(un)install steps; added devel package for liblinuxsampler;
200          to linuxsampler.spec (RPM)
201        - install necessary development header files for allowing 3rd party
202          applications to link against liblinuxsampler
203        - liblinuxsampler's API documentation can be generated with 'make docs'
204          (Doxygen required)
205        - added benchmark to automatically detect the best triangle LFO
206          implementation (currently either an integer math solution or a
207          di-harmonic approximation), automatic detection can be overriden
208          with --enable-signed-triang-algo=x and --enable-unsigned-triang-algo=x
209          configure script argument though (mandatory for cross-compilation)
210        - do not automatically pick optimized gcc flags if the user already
211          provided some on his own (as CXXFLAGS)
212        - added compile time option to disable processing of All-Notes-Off MIDI
213          messages
214        - added compile time options to allow disabling the various audio and
215          MIDI drivers
216        - fixed automatic GCC CPU switch detection on PPC
217          (patch by Ebrahim Mayat)
218    
219      * Gigasampler format engine:
220        - extensive synthesis optimization
221          (reimplementation of EGs and LFO(s), removed synthesis parameter
222          prerendering and the synthesis parameter matrix in general, splitting
223          each audio fragment into subfragments now where each subfragment uses
224          constant pitch and filter coefficients. The volume coefficient is
225          linearly interpolated inside a subfragment, unless
226          --disable-interpolate-volume is set.)
227        - fine tuning of the EG modulation parameters
228        - improved filter cutoff calculation by adding support for the
229          following gig parameters: Cutoff freq (used when no cutoff
230          controller is defined), Control invert, Minimum cutoff, Velocity
231          curve and Velocity range. The keyboard tracking now scales
232          cutoff frequency instead of resonance.
233        - added support for gig parameter Resonance.
234        - fixed bug in sysex handling (patch by Juan Linietsky)
235        - added global volume attenuation of -9 dB (0.35f) to prevent clipping
236          which can be overridden with --enable-global-attenuation
237        - EG fixes: made the length of "attack hold" stage more
238          accurate. Release stage can now start before attack stage
239          ends. Cancel release didn't work when sustain was zero. Attack
240          time now has a minimal value to prevent clicks.
241        - fixed pitch changes larger than one octave
242        - fixed EG3 (pitch envelope) synthesis which was neutral all the time
243        - implemented portamento mode and solo mode (a.k.a 'mono mode'):
244          all modes can be altered via standard GM messages, that is CC5 for
245          altering portamento time, CC65 for enabling / disabling portamento
246          mode, CC126 for enabling solo mode and CC127 for disabling solo mode
247        - fine tuning of the curves for volume (CC7), pan (CC10 and gig
248          parameter) and crossfade
249        - added support for the "attenuation controller threshold" gig
250          parameter
251        - added smoothing of volume changes caused by control change
252          messages
253        - sample loop parameters are now taken from the DimensionRegion
254          instead of the wave chunk
255        - fixed keyswitching for v3 gigs with a number of keyswitch splits
256          not equal to a power of two
257        - reimplementation of the filter algorithm. The new filter is more
258          accurate and supports all gig filter types, including bandreject
259          and lowpass turbo.
260        - real support for 24 bit samples - samples are not truncated to
261          16 bits anymore
262        - support for aftertouch (channel pressure, not polyphonic
263          aftertouch)
264        - LFO1 behaviour fixed (dampening from max volume instead of
265          amplifying from 0)
266    
267      * LSCP server:
268        - fixed application exit on broken pipe error (fixes bug #20)
269        - fixed the notification messages delay due to lack of
270          network activity (fixes bug #26)
271        - fixed parser bug which occured on space(s) within device parameters
272          (e.g. "SET AUDIO_OUTPUT_CHANNEL_PARAMETER 0 0 SOMEPARAM='foo bar'")
273    
274      * audio driver:
275        - added aRts audio output driver (by no means RT safe)
276    
277      * MIDI driver:
278        - fixed legacy sysex code which caused dispatching of MIDI SysEx
279          messages several times instead of once
280        - API extension for MIDI drivers which already supply exact time stamps
281          for events (i.e. for offline rendering based MIDI drivers)
282        - added checks for bad MIDI data
283    
284      * linuxsampler application:
285        - show available sampler engine types on startup
286    
287      * general changes:
288        - support for muting sampler channels and solo mode of the same, two new
289          LSCP commands ("SET CHANNEL MUTE" and "SET CHANNEL SOLO") and two new
290          fields ("MUTE" and "SOLO") for command "GET CHANNEL INFO" were
291          introduced for this, the behavior is the same like on a mixer console
292          (patch by Grigor Iliev, a bit adjusted). Also added configure option
293          --enable-process-muted-channels which can be used to enable the
294          processing of muted channels.
295        - support for sostenuto pedal
296        - support for monitoring the total number of active voices
297          (new LSCP commands: GET TOTAL_VOICE_COUNT, GET TOTAL_VOICE_COUNT_MAX,
298          SUBSCRIBE TOTAL_VOICE_COUNT, UNSUBSCRIBE TOTAL_VOICE_COUNT)
299        - fixed some memory management errors
300        - fixed some concurrency problems that could lead to crashes when
301          LSCP commands were executed
302        - fixed crash when instrument loading failed previously on the same
303          sampler channel (fixes bug #36)
304    
305    Version 0.3.3 (15 July 2005)
306    
307      * packaging changes:
308        - fixed compilation with gcc 4.0
309    
310      * Gigasampler format engine:
311        - LFO preprocessing was performed even though the respective LFO was
312          disabled by the instrument patch (minor efficiency fix)
313        - if period time of chosen audio device is too small (< MIN_RELEASE_TIME)
314          for volume ramp downs in the same fragment (needed for current voice
315          stealing implementation) then simply inform the user with a warning
316          about possible click sounds and reduce the volume ramp down
317          appropriately instead of cancelling the audio device connection
318    
319  Version 0.3.2 (24 June 2005)  Version 0.3.2 (24 June 2005)
320    
321    * packaging changes:    * packaging changes:
# Line 8  Version 0.3.2 (24 June 2005) Line 326  Version 0.3.2 (24 June 2005)
326      - fixed 'make dist' rule to include all necessary files      - fixed 'make dist' rule to include all necessary files
327      - require automake (>= 1.5) for 'make -f Makefile.cvs'      - require automake (>= 1.5) for 'make -f Makefile.cvs'
328        (due to 'dist-bzip2' automake option)        (due to 'dist-bzip2' automake option)
     - fixed compilation with gcc 4.0  
329    
330    * Gigasampler format engine:    * Gigasampler format engine:
331      - support for the gig parameters for "release velocity response" curves      - support for the gig parameters for "release velocity response" curves

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