Changes.

Changes from 3.7 to 3.7.1

Additions

• Bump AVISYNTH_INTERFACE_VERSION to 9, AVISYNTHPLUS_INTERFACE_BUGFIX_VERSION to 0

• Linux: Show more information when dlopen fails

• Expr: allow auto scaling effect on pixels obtained from relative addressing

• New array manipulators: ArrayDel, ArrayAdd, ArrayIns, ArraySet with accepting multi dimensional indexes

• ExtractY/U/V/R/G/B/A, PlaneToY: delete _ChromaLocation property. Set _ColorRange property to "full" if source is Alpha plane

• Add new AEP (Avisynth Environtment Property) constants to directly query Avisynth interface main and bugfix version and system endianness: AEP_HOST_SYSTEM_ENDIANNESS, AEP_INTERFACE_VERSION, AEP_INTERFACE_BUGFIX (c++) AVS_AEP_HOST_SYSTEM_ENDIANNESS, AVS_AEP_INTERFACE_VERSION, AVS_AEP_INTERFACE_BUGFIX (c)

• Interface: introduce AVISYNTHPLUS_INTERFACE_BUGFIX_VERSION.

• New interface functions env->MakePropertyWritable/VideoFrame::IsPropertyWritable.

• Expr: allow 'f32' as internal autoscale target (was: i8, i10, i12, i14, i16 were accepted, only integers)

• Expr: LUT mode! 'lut'=1 or 2 for 1D (lut_x) and 2D (lux_xy) support

• xPlaneMin/Max/Median/MinMaxDifference to accept old packed formats (RGB24/32/48/64 and YUY2) by autoconverting them to Planar RGB or YV16

• New runtime function: PlaneMinMaxStats returns an array and/or set global variables.

• Language syntax: accept arrays in the place of "val" script function parameter type regardless of being named or unnamed.

• Histogram "Levels": more precise drawing when bit depth is different from histogram's resolution bit depth, plus using full/limited flag.

• Expr: no more banker's rounding when converting back float result to integer pixels. Using the usual truncate(x+0.5) rounding method

• ColorYUV: More consistent and accurate output across different color spaces, match with ConvertBits fulls-fulld conversions

• ColorYUV: set _ColorRange frame property

• ColorYUV: when no hint is given by parameter "levels" then it can use _ColorRange (limited/full) frame property for establishing source range for gamma

• ColorYUV "showyuv_fullrange"=true: fix shown U and V ranges. E.g. for bits=8: 128 +/- 127 (range 1..255 is shown) instead of 0..255

• propShow: display _Matrix, _ColorRange and _ChromaLocation constants with friendly names

• Expr: new function "sgn". Returns -1 when x is negative; 0 if zero; 1 when x is positive

• Expr: add "neg": negates stack top: a = -a

• ConvertBits: Support YUY2 (by autoconverting to and from YV16), support YV411

• ConvertBits: "bits" parameter is not compulsory, since bit depth can stay as it was before. Call like ConvertBits(fulld=true)

• ConvertBits: much nicer output for low bit depth targets such as dither_bits 1 to 7.

• ConvertBits: allow dither down from 8 bit sources by giving a lower dither_bits value

• ConvertBits: dither=1 (Floyd-S) to support dither_bits = 1 to 16 (similar to ordered dither)

• ConvertBits: dither=0 (ordered) to allow odd dither_bits values. Any dither_bits=1 to 16 (was: 2,4,6,8,..)

• ConvertBits: dither=0 (ordered) allow larger than 8 bit difference when dither_bits is less than 8.

• ConvertBits: Correct conversion of full-range chroma at 8-16 bits. Like 128+/-112 -> 128+/-127 in 8 bits

• ConvertBits: allow dither from 32 bits to 8-16 bits

• ConvertBits: allow different fulls fulld when converting between integer bit depths (was: they must have been the same)

• ConvertBits: allow 32 bit to 32 bit conversion

• frame property support: _ChromaLocation in various filters (e.g. ConvertToYUV422)

• Support additional chroma locations "top", "bottom_left", "bottom"

• New syntax for "matrix" parameters (e.g. in ConvertToYUV444 old:"rec601" new "170m:l") which separate matrix and full/limited marker. Old syntax is still valid but does not support all new matrix values.

• frame propery support: _Matrix and _ColorRange in various filters. New "matrix" string constants

• RGB<->YUV (YUY2) conversions: frame property support _Matrix and _ColorRange (_Primaries and _Transfer is not used at all yet)

• ConvertBits: use input frame property _ColorRange to detect full/limited range of input clip

• ColorBars, ColorBarsHD, BlankClip: set frame properties _ColorRange and _Matrix

• New function: propCopy to copy or merge frame properties from one clip to another.

• xxxPlaneMin xxxPlaneMax, xxxPlaneMinMaxDifference for 32 bit float formats: when threshold is 0 then return real values instead of 0..1 (chroma -0.5..0.5) clamped histogram-based result

• Allow propGetXXX property getter functions called as normal functions, outside runtime. Frame number offset can be used.

• YUY2 RGB conversions now allow matrix "PC.2020" and "Rec2020"

• 4:2:2 conversions: allow ChromaInPlacement and ChromaOutPlacement: Valid values: left/mpeg2, center/mpeg1/jpeg

• 4:2:0 conversions: new ChromaInPlacement and ChromaOutPlacement values: top_left, left (alias to mpeg2), center (alias to mpeg1), jpeg (alias to mpeg1) (see http://avisynth.nl/index.php/Convert)

• Expr: atan2 (SIMD acceleration as well)

• Expr: sin and cos SIMD acceleration (SSE2 and AVX2) port from VapourSynth (Akarin et al.)

• Expr: x.framePropName syntax for injecting actual frame property values into expression

• Script functions to supports arrays with _nz type suffix. (one or more)

• Expr: arbitrary variable names (instead of single letters A..Z), up to 128 different one.

• Expr: add 'round', 'floor', 'ceil', 'trunc' operators (nearest integer, round down, round up, round to zero) Acceleration requires at least SSE4.1 capable processor or else the whole expression is running in C mode.

• Recognize \' and \b and \v in escaped (e"somethg") string literals (see http://avisynth.nl/index.php/The_full_AviSynth_grammar#Literals)

• Expr: allow TAB, CR and LF characters as whitespace in expression strings

• Clip types for propSet, propGet, add propSetClip, propGetClip

• Clip content support for propGetAsArray, propSetArray and propGetAll

• RGBAdjust: analyse=true 32 bit float support

Build environment, Interface

• Visual Studio 2022: Add /fp:contract to compilation parameters (addition to /fp:precise)

• Check Visual Studio 2022, add build examples to documentation. Recognized: it has still an option to use v141_xp toolkit

• CMake build environment: older GCC can be used which knows only -std=c++-1z instead of c++17

• AviSynth programming interface V8.1 / V9: Add 'MakePropertyWritable' to the IScriptEnvironment (CPP interface), avs_make_property_writable (C interface) Add 'VideoFrame::IsPropertyWritable' (CPP interface), avs_is_property_writable (C interface)

• Info on Windows XP compatibility (must revert to an older Visual C++ Redistributable)

• CMake/source: Intel C++ Compiler 2021 and Intel C++ Compiler 19.2 support

• experimental! Fix CUDA plugin support on specific builds, add CMake support for the option.

• Fixes for building the core as a static library

Bugfixes

• Fix: Debug build does not crash with stack overflow when some 1000+ clips are in filter chain.

• Fix memory and speed issues when Prefetch was not the last position or there are multiple Prefetch.

• Fix: "Text" filter would crash when y coord is odd and format has vertical subsampling

• Fix: MinMax runtime filter family: check plane existance (e.g. error when requesting RPlaneMinMaxDifference on YV12)

• Fix: prevent x64 debug AviSynth builds from crashing in VirtualDub2 (opened through CAVIStreamSynth)

• Expr: fix conversion factor (+correct chroma scaling) when integer-to-integer full-scale automatic range scaling was required

• ColorYUV: fix 32 bit float output

• ColorYUV: fix display when showyuv=true and bits=32

• ConvertBits: "dither" parameter: type changed to integer. Why was it float? :)

• ConvertBits: Fix: fulls=true -> fulld=true 16->8 bit missing rounding

• Fix: Planar RGB 32 bit -> YUV matrix="PC.709"/"PC.601"/"PC.2020" resulted in greyscale image

• SelectRangeEvery: experimental fix on getting audio part (TomArrow; https://github.com/AviSynth/AviSynthPlus/issues/232)

• Fix: Overlay "blend" 10+ bit clips and "opacity"<1 would leave rightmost non-mod8 (10-16 bit format) or non-mod4 (32 bit format) pixels unprocessed.

• Fix: Overlay "blend" with exactly 16 bit clips and "opacity"<1 would treat large mask values as zero (when proc>=SSE4.1)

• Parser: proper error message when a script array is passed to a non-array named function argument (e.g. foo(sigma=[1.1,1.1]) to [foo]f parameter signature)

• Fix: Expr: wrong constant folding optimization when ternary operator and Store-Only (like M^) operator is used together.

• ColorBars: fixed studio RGB values for -I and +Q for rgb pixel types

• ColorBarsHD: use BT.709-2 for +I (Pattern 2), not BT.601. Also fixed Pattern 1 Green.Y to conform to SMPTE RP 219-1:2014 (133, not 134).

• Overlay mode "multiply": proper rounding in internal calculations

• Fix: ConvertAudio integer 32-to-8 bits C code garbage (regression in 3.7)

• Fix: ConvertAudio: float to 32 bit integer conversion max value glitch (regression in 3.7)

• Fix: Crash in ColorBars very first frame when followed by ResampleAudio

• Fix: frame property access from C interface

• Fix: StackVertical and packed RGB formats: get audio and parity from the first and not the last clip

Optimizations

• CombinePlanes: a bit optimized MergeLuma-like cases

• Quicker ClearProperties and CopyProperties filters (by using MakePropertyWritable instead of MakeWritable).

• ConvertBits: AVX2 support

• ConvertBits: Special case for: 8->16 bit fulls=true, fulld=true

• Expr: consume less bytes on stack. 48x Expr call in sequence caused stack overflow

• xxxPlaneMin xxxPlaneMax, xxxPlaneMinMaxDifference for threshold 0 became a bit quicker for 8-16 bit formats (~10% on i7-7700)

• Speedup: Overlay mode "multiply": overlay clip is not converted to 4:4:4 internally when 420 or 422 subsampled format (since only Y is used from that clip)

• Speedup: Overlay mode "multiply": SSE4.1 and AVX2 code (was: C only) SSE4.1: ~1.2-2.5X speed, AVX2: ~2-3.5X speed (i7700 x64 single thread, depending on opacity full/not, mask clip yes/no)

• ConvertAudio: Add direct Float from/to 8/16 conversions (C,SSE2,AVX2)

Please report bugs at github AviSynthPlus page - or - Doom9's AviSynth+ forum

$Date: 2021/12/07 13:36:0 $