--- linuxsampler/trunk/ChangeLog	2019/10/01 10:50:29	3616
+++ linuxsampler/trunk/ChangeLog	2020/05/15 19:52:31	3768
@@ -3,6 +3,7 @@
   * general changes:
     - Fixed compiler error in Pool.h.
     - Require C++14 compiler support.
+    - Require C11 compliant compiler.
     - Autoconf: Added m4/ax_cxx_compile_stdcxx.m4 macro which is used
       for checking in configure for C++14 support (as mandatory
       requirement) and automatically adds compiler argument if required
@@ -26,6 +27,46 @@
       file).
     - Renamed type LFOSigned -> LFOTriangleSigned.
     - Renamed type LFOUnsigned -> LFOTriangleUnsigned.
+    - Using now cubic interpolation as resampling algorithm by default; and
+      linear interpolation is deprecated now.
+    - Event:Init(): memset() entire Event::Param union to zero instead of trying
+      to do that for its individual members; the latter became error prone due
+      to the union's growing complexity meanwhile.
+    - EngineChannel: Overhaul of RPN/NRPN related methods: Added new
+      *Rpn*Parameter*() methods as replacement for previous *Rpn*Controller*()
+      methods and marked the old ones as deprecated; and likewise added new
+      *Nrpn*Parameter*() methods as replacement for previous *Nrpn*Controller*()
+      methods and marked those old ones deprecated as well.
+    - Added support for MIDI CC #38 (data entry LSB): this allows higher value
+      resolution for certain (e.g. hard coded) RPN and NRPN parameters.
+    - Implemented support for compressed RPN/NRPN message sequences (that is to
+      allow processing MIDI data entry messages without always having to be
+      preceded strictly by RPN/NRPN parameter selection messages on each value
+      change).
+    - Added support for MIDI CC #96 (data increment) and MIDI CC #97 (data
+      decrement).
+    - Added support for 'null function RPN/NRPN' (which is RPN/NRPN parameter
+      MSB=127 and LSB=127) and which is disabling subsequent data
+      entry/increment/decrement CC messages.
+    - Fixed crash when editing key groups (a.k.a. exclusive groups) with an
+      instrument editor.
+    - Fixed playing noise at the end of a disk stream under certain conditions.
+    - Fixed potential crash with high pitch at end of RAM playback.
+    - Added configure checks whether C++ compiler supports so called
+      'designated initializers'.
+    - Added global backtraceAsString() function for debugging purposes
+      (POSIX systems only, no Windows implementation yet).
+    - Thread class: Added new methods pushCancelable(), popCancelable(), name(),
+      nameOfCaller() and setNameOfCaller().
+    - configure: Always check for availability of pthread_testcancel() and use
+      it if so (previously it was only used if explicitly enabled by configure
+      option).
+    - Thread class: raise compiler warning if pthread_testcancel() is not
+      available, because it can lead to deadlocks.
+    - Mutex class: Implemented optional bug detection and deadlock debugging
+      features.
+    - Ref<> class is now thread safe (as lock-free and wait-free
+      implementation).
 
   * Real-time instrument scripts:
     - Added method ScriptVM::setExitResultEnabled() which allows to
@@ -198,6 +239,46 @@
     - Added built-in script real number constant "~NI_MATH_PI".
     - Added built-in script real number constant "~NI_MATH_E".
     - NKSP language: Allow unary '+' operator.
+    - Added built-in script functions "msb()" and "lsb()".
+    - NKSP language: Added support for RPN event handler
+      ("on rpn ... end on" in instrument scripts).
+    - NKSP language: Added support for NRPN event handler
+      ("on nrpn ... end on" in instrument scripts).
+    - Added built-in read-only variables "$RPN_ADDRESS" and "$RPN_VALUE" which
+      may be read from the new RPN/NRPN script handlers to get the (N)RPN
+      parameter that had been changed and its new value.
+    - Added built-in const variables "$NI_CB_TYPE_RPN" and "$NI_CB_TYPE_NRPN"
+      which are identifying the new (N)RPN handlers as such at script runtime.
+    - Implemented built-in script function "set_rpn()".
+    - Implemented built-in script function "set_nrpn()".
+    - Fix: built-in functions returning an array type were broken and caused a
+      crash when the built-in function's (supposed to be array) result value was
+      used by the script VM.
+    - Removed upper value constraint for 2nd argument of built-in functions
+      "change_amp_lfo_freq()", "change_cutoff_lfo_freq()",
+      "change_pitch_lfo_freq()","change_reso()", "change_cutoff()",
+      "change_amp_lfo_depth()", "change_cutoff_lfo_depth()" and
+      "change_pitch_lfo_depth()", to allow e.g. passing value 2000000 to double
+      the LFO frequency / resonance / cutoff frequency.
+    - Reduced code involved for parsing NKSP variable declarations by using 2
+      generalized grammar rules with optional components (i.e. optional value
+      assignment and optional variable qualifiers) instead of previous linear
+      combinations of grammar rules, which also fixes some edge case.
+    - NKSP language parser: track code block locations also by a) raw byte
+      position in NKSP source code string and b) length of that code block in
+      bytes (along to the already existing code block tracking by line/column);
+      and added appropriate new members to public C++ API classes like
+      'firstByte' and 'lengthBytes' to class VMSourceToken and struct CodeBlock.
+    - NKSP language: Added support for 'patch' variable qualifier (capture their
+      locations and allow replacement of their assignment expression via VM C++
+      API).
+    - Fixed incorrect EG times if standard measuring unit was passed to built-in
+      functions "change_attack()", "change_decay()" or "change_release()".
+    - Fixed intermediate function result values never having reflected any
+      standard measuring unit type.
+    - Fixed re-entrant issue with function calls which caused wrong result
+      values if the same function was called multiple times in a term
+      (specifically if metric prefixes were used).
 
   * test cases:
     - Fixed compiler errors in test cases.
@@ -222,6 +303,8 @@
       "floor()", "sqrt()", "log()", "log2()", "log10()", "exp()", "pow()",
       "sin()", "cos()", "tan()", "asin()", "acos()", "atan()".
     - Added NKSP test cases for unary '+' operator.
+    - Added NKSP test cases for core built-in variables.
+    - Added thorough NKSP test cases for variable declarations.
 
   * GigaStudio/Gigasampler format engine:
     - LFOTriangleIntMath and LFOTriangleIntAbsMath: Fixed FlipPhase=true
@@ -232,6 +315,21 @@
     - Changed default wave form for all 3 LFOs to sine (instead of triangle;
       see discussion "GigaStudio LFO compatibility" on mailing list from
       2019-09-26 for details).
+    - Format extension: Added support for different LFO wave forms (currently
+      either sine [default], triangle, saw or square).
+    - Format extension: Added support for LFO phase displacement (0°..360°).
+    - Format extension: Added support for flipping LFO polarity on LFO 3
+      (in the original gig format this was only available for LFO 1 and LFO 2).
+    - Format extension: Support for additional filter types:
+      lowpass 1/2/4/6-pole, highpass 1/2/4/6-pole, bandpass 2-pole,
+      bandreject 2-pole.
+    - Fixd potential crash with polynomial interpolator and max. pitch.
+    - If minimum cutoff is defined, remap cutoff controller CC values to really
+      span the entire possible cutoff range (and avoiding a dead controller
+      zone).
+    - Implemented support for loading instrument scripts with 'patch' variables
+      (by patching these script variables with potentially overridden ones by
+      gig Instrument).
 
   * SFZ format engine:
     - Fixed support for regions with loccN/hiccN conditions on more than one