Description

Jinc (EWA Lanczos) resampling plugin for AviSynth 2.6 / AviSynth+.

This is a port of the VapourSynth plugin JincResize.

SSE / AVX Intrinsics taken from the other AviSynth plugin JincResize.

NOTE: The 32-bit version is not supported. If you still want to use it keep in mind that the OS memory limit can be easily hit. (#10)

Requirements:

• AviSynth+ r3688 or later (1 / 2 / 3)

• Microsoft VisualC++ Redistributable Package 2022 (can be downloaded from here)

Usage:

JincResize (clip, int target_width, int target_height, float "src_left", float "src_top", float "src_width", float "src_height", int "quant_x", int "quant_y", int "tap", float "blur", string "cplace", int "threads", int "opt", int "initial_capacity", float "initial_factor")

There are 4 additional functions:

Jinc36Resize is an alias for JincResize(tap=3).
Jinc64Resize is an alias for JincResize(tap=4).
Jinc144Resize is an alias for JincResize(tap=6).
Jinc256Resize is an alias for JincResize(tap=8).

Jinc36Resize / Jinc64Resize / Jinc144Resize / Jinc256Resize (clip, int target_width, int target_height, float "src_left", float "src_top", float "src_width", float "src_height", int "quant_x", int "quant_y", string "cplace", int "threads")

Parameters:

• clip
  A clip to process. All planar formats are supported.

• target_width
  The width of the output.

• target_height
  The height of the output.

• src_left
  Cropping of the left edge.
  Default: 0.0.

• src_top
  Cropping of the top edge.
  Default: 0.0.

• src_width
  If > 0.0 it sets the width of the clip before resizing.
  If <= 0.0 it sets the cropping of the right edges before resizing.
  Default: Source width.

• src_height
  If > 0.0 it sets the height of the clip before resizing.
  If <= 0.0 it sets the cropping of the bottom edges before resizing.
  Default: Source height.

• quant_x, quant_y
  Controls the sub-pixel quantization.
  Must be between 1 and 256.
  Default: 256.

• tap (JincResize only)
  Corresponding to different zero points of Jinc function.
  Must be between 1 and 16.
  Default: 3.

• blur (JincResize only)
  Blur processing, it can reduce side effects.
  To achieve blur, the value should be less than 1.0.
  Default: 1.0.

• threads
  Whether to use maximum logical processors.
  0: Maximum logical processors are used.
  1: Only one thread is used.
  Default: 0.

• cplace
  The location of the chroma samples.
  "MPEG1": Chroma samples are located on the center of each group of 4 pixels.
  "MPEG2": Chroma samples are located on the left pixel column of the group.
  "topleft": Chroma samples are located on the left pixel column and the first row of the group.
  Default: If frame properties are supported and frame property "_ChromaLocation" exists - "_ChromaLocation" value of the first frame is used. If frame properties aren't supported or there is no property "_ChromaLocation" - "MPEG2".

• opt (JincResize only)
  Sets which cpu optimizations to use.
  -1: Auto-detect without AVX-512.
  0: Use C++ code.
  1: Use SSE4.1 code.
  2: Use AVX2 code.
  3: Use AVX-512 code.
  Default: -1.

• initial_capacity (JincResize only)
  Initial memory allocation size.
  Lower size forces more further memory reallocating that leads to initial slower startup but avoids excessive memory allocation.
  Must be greater than 0.
  Default: Max(target_width * target_height, src_width * src_height).

• initial_factor (JincResize only)
  The initial factor used for the first memory reallocation.
  After the first memory reallocation the factor starts to lower for the next reallocations.
  initial_factor=1 ensures that the next memory allocation is the minimal possible.
  Must be equal to or greater than 1.0.
  Default: 1.5.

Building:

Requirements:
- Git
- C++17 compiler
- CMake >= 3.16
- Ninja

git clone https://github.com/Asd-g/AviSynth-JincResize && \
cd AviSynth-JincResize
cmake -B build -G Ninja
ninja -C build

Example of building on Windows with MSVC:

1. Open x64 Native Tools Command Prompt for VS xxxx.
2. Type - set LIB=%LIB%;path_to_avisynth.lib
3. Navigate to the jincresize source folder.
4. Type - cmake -B name_of_the_folder_containing_building_files -DCMAKE_CXX_STANDARD_INCLUDE_DIRECTORIES=path_to_avisynth_c.h

By default Visual Studio solution files will be created.

Example of building on Windows with Mingw:

1. Open UCRT64/MINGW64 shell.
2. Type - export LIBRARY_PATH=$LIBRARY_PATH:path_to_the_avs_lib
3. Navigate to the jincresize source folder.
4. Type - cmake -B name_of_the_folder_containing_building_files -DCMAKE_CXX_STANDARD_INCLUDE_DIRECTORIES=path_to_avisynth_c.h