[x264-devel] [Git][videolan/x264][master] Replace AvxSynth with AviSynth+ on POSIX systems

Anton Mitrofanov (@BugMaster) gitlab at videolan.org
Mon Feb 21 22:02:11 UTC 2022



Anton Mitrofanov pushed to branch master at VideoLAN / x264


Commits:
35fe20d1 by Anton Mitrofanov at 2022-02-21T21:57:05+00:00
Replace AvxSynth with AviSynth+ on POSIX systems

- - - - -


4 changed files:

- configure
- extras/avisynth_c.h
- − extras/avxsynth_c.h
- input/avs.c


Changes:

=====================================
configure
=====================================
@@ -1299,14 +1299,11 @@ if [ "$avs" = "auto" ] ; then
     avs="no"
     # cygwin can use avisynth if it can use LoadLibrary
     if [ $SYS = WINDOWS ] || ([ $SYS = CYGWIN ] && cc_check windows.h "" "LoadLibraryW(0);") ; then
-        avs="avisynth"
+        avs="yes"
         define HAVE_AVS
-        define USE_AVXSYNTH 0
     elif [ "$SYS" = "LINUX" -o "$SYS" = "MACOSX" ] ; then
-    # AvxSynth currently only supports Linux and OSX
-        avs="avxsynth"
+        avs="yes"
         define HAVE_AVS
-        define USE_AVXSYNTH 1
         AVS_LIBS="-ldl"
         LDFLAGSCLI="$AVS_LIBS $LDFLAGSCLI"
     fi


=====================================
extras/avisynth_c.h
=====================================
@@ -1,6 +1,8 @@
 // Avisynth C Interface Version 0.20
 // Copyright 2003 Kevin Atkinson
 
+// Copyright 2020 AviSynth+ project
+
 // This program is free software; you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
 // the Free Software Foundation; either version 2 of the License, or
@@ -13,7 +15,8 @@
 //
 // You should have received a copy of the GNU General Public License
 // along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA, or visit
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+// MA 02110-1301 USA, or visit
 // http://www.gnu.org/copyleft/gpl.html .
 //
 // As a special exception, I give you permission to link to the
@@ -31,55 +34,260 @@
 // export plugins, or graphical user interfaces.
 
 // NOTE: this is a partial update of the Avisynth C interface to recognize
-// new color spaces added in Avisynth 2.60. By no means is this document
-// completely Avisynth 2.60 compliant.
+// new color spaces and interface elements added in Avisynth 2.60 and AviSynth+.
+// This interface is not 100% Avisynth+ CPP interface equivalent.
+
+// 170103: added new CPU constants (FMA4, AVX512xx)
+// 171102: define SIZETMOD. do not use yet, experimental. Offsets are size_t instead of int. Affects x64.
+// 171106: avs_get_row_size calls into avs_get_row_size_p, instead of direct field access
+// 171106: avs_get_height calls into avs_get_row_size_p, instead of direct field access
+// 180524: AVSC_EXPORT to dllexport in capi.h for avisynth_c_plugin_init
+// 180524: avs_is_same_colorspace VideoInfo parameters to const
+// 181230: Readability: functions regrouped to mix less AVSC_API and AVSC_INLINE, put together Avisynth+ specific stuff
+// 181230: use #ifndef AVSC_NO_DECLSPEC for AVSC_INLINE functions which are calling API functions
+// 181230: comments on avs_load_library (helper for loading API entries dynamically into a struct using AVSC_NO_DECLSPEC define)
+// 181230: define alias AVS_FRAME_ALIGN as FRAME_ALIGN
+// 181230: remove unused form of avs_get_rowsize and avs_get_height (kept earlier for reference)
+// 190104: avs_load_library: smart fallback mechanism for Avisynth+ specific functions:
+//         if they are not loadable, they will work in a classic Avisynth compatible mode
+//         Example#1: e.g. avs_is_444 will call the existing avs_is_yv24 instead
+//         Example#2: avs_bits_per_component will return 8 for all colorspaces (Classic Avisynth supports only 8 bits/pixel)
+//         Thus the Avisynth+ specific API functions are safely callable even when connected to classic Avisynth DLL
+// 202002xx  non-Windows friendly additions
+// 20200305  avs_vsprintf parameter type change: (void *) to va_list
+// 20200330: (remove test SIZETMOD define for clarity)
+// 20200513: user must use explicite #define AVS26_FALLBACK_SIMULATION for having fallback helpers in dynamic loaded library section
+// 20200513: Follow AviSynth+ V8 interface additions
+//           AVS_VideoFrame struct extended with placeholder for frame property pointer
+//           avs_subframe_planar_a
+//           avs_copy_frame_props
+//           avs_get_frame_props_ro, avs_get_frame_props_rw
+//           avs_prop_num_keys, avs_prop_get_key, avs_prop_num_elements, avs_prop_get_type, avs_prop_get_data_size
+//           avs_prop_get_int, avs_prop_get_float, avs_prop_get_data, avs_prop_get_clip, avs_prop_get_frame, avs_prop_get_int_array, avs_prop_get_float_array
+//           avs_prop_set_int, avs_prop_set_float, avs_prop_set_data, avs_prop_set_clip, avs_prop_set_frame, avs_prop_set_int_array, avs_prop_set_float_array
+//           avs_prop_delete_key, avs_clear_map
+//           avs_new_video_frame_p, avs_new_video_frame_p_a
+//           avs_get_env_property (internal system properties), AVS_AEP_xxx (AvsEnvProperty) enums
+//           avs_get_var_try, avs_get_var_bool, avs_get_var_int, avs_get_var_double, avs_get_var_string, avs_get_var_long
+//           avs_pool_allocate, avs_pool_free
+
 
 #ifndef __AVISYNTH_C__
 #define __AVISYNTH_C__
 
+#ifndef AVS_CONFIG_H
+#define AVS_CONFIG_H
+
+// Undefine this to get cdecl calling convention
+#define AVSC_USE_STDCALL 1
+
+// NOTE TO PLUGIN AUTHORS:
+// Because AVS_FRAME_ALIGN can be substantially higher than the alignment
+// a plugin actually needs, plugins should not use AVS_FRAME_ALIGN to check for
+// alignment. They should always request the exact alignment value they need.
+// This is to make sure that plugins work over the widest range of AviSynth
+// builds possible.
+#define AVS_FRAME_ALIGN 64
+
+#if   defined(_M_AMD64) || defined(__x86_64)
+#   define AVS_X86_64
+#elif defined(_M_IX86) || defined(__i386__)
+#   define AVS_X86_32
+// VS2017 introduced _M_ARM64
+#elif defined(_M_ARM64) || defined(__aarch64__)
+#   define AVS_ARM64
+#elif defined(_M_ARM) || defined(__arm__)
+#   define AVS_ARM32
+#elif defined(__PPC64__)
+#   define AVS_PPC64
+#elif defined(_M_PPC) || defined(__PPC__) || defined(__POWERPC__)
+#   define AVS_PPC32
+#elif defined(__riscv)
+#   define AVS_RISCV
+#elif defined(__sparc_v9__)
+#   define AVS_SPARC
+#else
+#   error Unsupported CPU architecture.
+#endif
+
+//                VC++  LLVM-Clang-cl   MinGW-Gnu
+// AVS_MSVC        x          x
+// AVS_MSVC_PURE   x
+// AVS_CLANG                  x
+// AVS_GCC                                  x
+
+#if defined(__clang__)
+// Check clang first. clang-cl also defines __MSC_VER
+// We set AVS_MSVC because they are mostly compatible
+#   define AVS_CLANG
+#if defined(_MSC_VER)
+#   define AVS_MSVC
+#   define AVS_FORCEINLINE __attribute__((always_inline))
+#else
+#   define AVS_FORCEINLINE __attribute__((always_inline)) inline
+#endif
+#elif   defined(_MSC_VER)
+#   define AVS_MSVC
+#   define AVS_MSVC_PURE
+#   define AVS_FORCEINLINE __forceinline
+#elif defined(__GNUC__)
+#   define AVS_GCC
+#   define AVS_FORCEINLINE __attribute__((always_inline)) inline
+#elif defined(__INTEL_COMPILER) || defined(__INTEL_LLVM_COMPILER)
+// Intel C++ Compilers with MSVC command line interface will not appear here rather at _MSC_VER
+#   define AVS_FORCEINLINE inline
+#   undef __forceinline
+#   define __forceinline inline
+#else
+#   error Unsupported compiler.
+#   define AVS_FORCEINLINE inline
+#   undef __forceinline
+#   define __forceinline inline
+#endif
+
+#if defined(_WIN32) || defined(__CYGWIN__)
+#   define AVS_WINDOWS
+#elif defined(__linux__)
+#   define AVS_LINUX
+#   define AVS_POSIX
+#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
+#   define AVS_BSD
+#   define AVS_POSIX
+#elif defined(__APPLE__)
+#   define AVS_MACOS
+#   define AVS_POSIX
+#elif defined(__HAIKU__)
+#   define AVS_HAIKU
+#   define AVS_POSIX
+#else
+#   error Operating system unsupported.
+#endif
+
+#ifndef AVS_MSVC
+// GCC and Clang can be used on big endian systems, MSVC can't.
+#  if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+#    define AVS_ENDIANNESS "little"
+#  elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#    define AVS_ENDIANNESS "big"
+#  else
+#    define AVS_ENDIANNESS "middle"
+#  endif
+#else
+#define AVS_ENDIANNESS "little"
+#endif
+
+#endif //AVS_CONFIG_H
+
+#ifndef AVS_CAPI_H
+#define AVS_CAPI_H
+
+#ifdef AVS_POSIX
+// this is also defined in avs/posix.h
+#ifndef AVS_HAIKU
+#define __declspec(x)
+#endif
+#endif
+
 #ifdef __cplusplus
 #  define EXTERN_C extern "C"
 #else
 #  define EXTERN_C
 #endif
 
-#define AVSC_USE_STDCALL 1
-
-#ifndef AVSC_USE_STDCALL
-#  define AVSC_CC __cdecl
-#else
-#  define AVSC_CC __stdcall
+#ifdef AVS_WINDOWS
+#ifdef BUILDING_AVSCORE
+#  if defined(AVS_GCC) && defined(AVS_X86_32)
+#    define AVSC_CC
+#  else // MSVC builds and 64-bit GCC
+#    ifndef AVSC_USE_STDCALL
+#      define AVSC_CC __cdecl
+#    else
+#      define AVSC_CC __stdcall
+#    endif
+#  endif
+#else // needed for programs that talk to AviSynth+
+#  ifndef AVSC_WIN32_GCC32 // see comment below
+#    ifndef AVSC_USE_STDCALL
+#      define AVSC_CC __cdecl
+#    else
+#      define AVSC_CC __stdcall
+#    endif
+#  else
+#    define AVSC_CC
+#  endif
+#endif
+#  else
+#    define AVSC_CC
 #endif
 
+// On 64-bit Windows, there's only one calling convention,
+// so there is no difference between MSVC and GCC. On 32-bit,
+// this isn't true. The convention that GCC needs to use to
+// even build AviSynth+ as 32-bit makes anything that uses
+// it incompatible with 32-bit MSVC builds of AviSynth+.
+// The AVSC_WIN32_GCC32 define is meant to provide a user
+// switchable way to make builds of FFmpeg to test 32-bit
+// GCC builds of AviSynth+ without having to screw around
+// with alternate headers, while still default to the usual
+// situation of using 32-bit MSVC builds of AviSynth+.
+
+// Hopefully, this situation will eventually be resolved
+// and a broadly compatible solution will arise so the
+// same 32-bit FFmpeg build can handle either MSVC or GCC
+// builds of AviSynth+.
+
 #define AVSC_INLINE static __inline
 
-#ifdef AVISYNTH_C_EXPORTS
-#  define AVSC_EXPORT __declspec(dllexport)
+#ifdef BUILDING_AVSCORE
+#ifdef AVS_WINDOWS
+#  ifndef AVS_STATIC_LIB
+#    define AVSC_EXPORT __declspec(dllexport)
+#  else
+#    define AVSC_EXPORT
+#  endif
 #  define AVSC_API(ret, name) EXTERN_C AVSC_EXPORT ret AVSC_CC name
 #else
-#  define AVSC_EXPORT __declspec(dllimport)
+#  define AVSC_EXPORT EXTERN_C
+#  define AVSC_API(ret, name) EXTERN_C ret AVSC_CC name
+#endif
+#else
+#  define AVSC_EXPORT EXTERN_C __declspec(dllexport)
+#  ifndef AVS_STATIC_LIB
+#    define AVSC_IMPORT __declspec(dllimport)
+#  else
+#    define AVSC_IMPORT
+#  endif
 #  ifndef AVSC_NO_DECLSPEC
-#    define AVSC_API(ret, name) EXTERN_C AVSC_EXPORT ret AVSC_CC name
+#    define AVSC_API(ret, name) EXTERN_C AVSC_IMPORT ret AVSC_CC name
 #  else
 #    define AVSC_API(ret, name) typedef ret (AVSC_CC *name##_func)
 #  endif
 #endif
 
-typedef unsigned char BYTE;
-#ifdef __GNUC__
-typedef long long int INT64;
-#else
-typedef __int64 INT64;
-#endif
+#endif //AVS_CAPI_H
+
+#ifndef AVS_TYPES_H
+#define AVS_TYPES_H
 
+// Define all types necessary for interfacing with avisynth.dll
+#include <stdint.h>
+
+// Raster types used by VirtualDub & Avisynth
+typedef uint8_t  BYTE;
+
+#endif //AVS_TYPES_H
 
 /////////////////////////////////////////////////////////////////////
 //
 // Constants
 //
 
-#ifndef __AVISYNTH_6_H__
-enum { AVISYNTH_INTERFACE_VERSION = 6 };
+#ifndef __AVISYNTH_9_H__
+enum {
+  AVISYNTH_INTERFACE_CLASSIC_VERSION = 6,
+  AVISYNTH_INTERFACE_VERSION = 9,
+  AVISYNTHPLUS_INTERFACE_BUGFIX_VERSION = 0 // reset to zero whenever the normal interface version bumps
+};
 #endif
 
 enum {AVS_SAMPLE_INT8  = 1<<0,
@@ -105,54 +313,149 @@ enum {AVS_PLANAR_Y=1<<0,
       AVS_PLANAR_B_ALIGNED=AVS_PLANAR_B|AVS_PLANAR_ALIGNED};
 
   // Colorspace properties.
-enum {AVS_CS_BGR = 1<<28,
-      AVS_CS_YUV = 1<<29,
-      AVS_CS_INTERLEAVED = 1<<30,
-      AVS_CS_PLANAR = 1<<31,
-
-      AVS_CS_SHIFT_SUB_WIDTH   = 0,
-      AVS_CS_SHIFT_SUB_HEIGHT  = 8,
-      AVS_CS_SHIFT_SAMPLE_BITS = 16,
-
-      AVS_CS_SUB_WIDTH_MASK    = 7 << AVS_CS_SHIFT_SUB_WIDTH,
-      AVS_CS_SUB_WIDTH_1       = 3 << AVS_CS_SHIFT_SUB_WIDTH, // YV24
-      AVS_CS_SUB_WIDTH_2       = 0 << AVS_CS_SHIFT_SUB_WIDTH, // YV12, I420, YV16
-      AVS_CS_SUB_WIDTH_4       = 1 << AVS_CS_SHIFT_SUB_WIDTH, // YUV9, YV411
-
-      AVS_CS_VPLANEFIRST       = 1 << 3, // YV12, YV16, YV24, YV411, YUV9
-      AVS_CS_UPLANEFIRST       = 1 << 4, // I420
-
-      AVS_CS_SUB_HEIGHT_MASK   = 7 << AVS_CS_SHIFT_SUB_HEIGHT,
-      AVS_CS_SUB_HEIGHT_1      = 3 << AVS_CS_SHIFT_SUB_HEIGHT, // YV16, YV24, YV411
-      AVS_CS_SUB_HEIGHT_2      = 0 << AVS_CS_SHIFT_SUB_HEIGHT, // YV12, I420
-      AVS_CS_SUB_HEIGHT_4      = 1 << AVS_CS_SHIFT_SUB_HEIGHT, // YUV9
-
-      AVS_CS_SAMPLE_BITS_MASK  = 7 << AVS_CS_SHIFT_SAMPLE_BITS,
-      AVS_CS_SAMPLE_BITS_8     = 0 << AVS_CS_SHIFT_SAMPLE_BITS,
-      AVS_CS_SAMPLE_BITS_16    = 1 << AVS_CS_SHIFT_SAMPLE_BITS,
-      AVS_CS_SAMPLE_BITS_32    = 2 << AVS_CS_SHIFT_SAMPLE_BITS,
-
-      AVS_CS_PLANAR_MASK       = AVS_CS_PLANAR | AVS_CS_INTERLEAVED | AVS_CS_YUV | AVS_CS_BGR | AVS_CS_SAMPLE_BITS_MASK | AVS_CS_SUB_HEIGHT_MASK | AVS_CS_SUB_WIDTH_MASK,
-      AVS_CS_PLANAR_FILTER     = ~( AVS_CS_VPLANEFIRST | AVS_CS_UPLANEFIRST )};
-
-  // Specific colorformats
+enum {
+    AVS_CS_YUVA = 1 << 27,
+    AVS_CS_BGR = 1 << 28,
+    AVS_CS_YUV = 1 << 29,
+    AVS_CS_INTERLEAVED = 1 << 30,
+    AVS_CS_PLANAR = 1 << 31,
+
+    AVS_CS_SHIFT_SUB_WIDTH = 0,
+    AVS_CS_SHIFT_SUB_HEIGHT = 8,
+    AVS_CS_SHIFT_SAMPLE_BITS = 16,
+
+    AVS_CS_SUB_WIDTH_MASK = 7 << AVS_CS_SHIFT_SUB_WIDTH,
+    AVS_CS_SUB_WIDTH_1 = 3 << AVS_CS_SHIFT_SUB_WIDTH, // YV24
+    AVS_CS_SUB_WIDTH_2 = 0 << AVS_CS_SHIFT_SUB_WIDTH, // YV12, I420, YV16
+    AVS_CS_SUB_WIDTH_4 = 1 << AVS_CS_SHIFT_SUB_WIDTH, // YUV9, YV411
+
+    AVS_CS_VPLANEFIRST = 1 << 3, // YV12, YV16, YV24, YV411, YUV9
+    AVS_CS_UPLANEFIRST = 1 << 4, // I420
+
+    AVS_CS_SUB_HEIGHT_MASK = 7 << AVS_CS_SHIFT_SUB_HEIGHT,
+    AVS_CS_SUB_HEIGHT_1 = 3 << AVS_CS_SHIFT_SUB_HEIGHT, // YV16, YV24, YV411
+    AVS_CS_SUB_HEIGHT_2 = 0 << AVS_CS_SHIFT_SUB_HEIGHT, // YV12, I420
+    AVS_CS_SUB_HEIGHT_4 = 1 << AVS_CS_SHIFT_SUB_HEIGHT, // YUV9
+
+    AVS_CS_SAMPLE_BITS_MASK = 7 << AVS_CS_SHIFT_SAMPLE_BITS,
+    AVS_CS_SAMPLE_BITS_8 = 0 << AVS_CS_SHIFT_SAMPLE_BITS,
+    AVS_CS_SAMPLE_BITS_10 = 5 << AVS_CS_SHIFT_SAMPLE_BITS,
+    AVS_CS_SAMPLE_BITS_12 = 6 << AVS_CS_SHIFT_SAMPLE_BITS,
+    AVS_CS_SAMPLE_BITS_14 = 7 << AVS_CS_SHIFT_SAMPLE_BITS,
+    AVS_CS_SAMPLE_BITS_16 = 1 << AVS_CS_SHIFT_SAMPLE_BITS,
+    AVS_CS_SAMPLE_BITS_32 = 2 << AVS_CS_SHIFT_SAMPLE_BITS,
+
+    AVS_CS_PLANAR_MASK = AVS_CS_PLANAR | AVS_CS_INTERLEAVED | AVS_CS_YUV | AVS_CS_BGR | AVS_CS_YUVA | AVS_CS_SAMPLE_BITS_MASK | AVS_CS_SUB_HEIGHT_MASK | AVS_CS_SUB_WIDTH_MASK,
+    AVS_CS_PLANAR_FILTER = ~(AVS_CS_VPLANEFIRST | AVS_CS_UPLANEFIRST),
+
+    AVS_CS_RGB_TYPE  = 1 << 0,
+    AVS_CS_RGBA_TYPE = 1 << 1,
+
+    AVS_CS_GENERIC_YUV420  = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_2 | AVS_CS_SUB_WIDTH_2,  // 4:2:0 planar
+    AVS_CS_GENERIC_YUV422  = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_1 | AVS_CS_SUB_WIDTH_2,  // 4:2:2 planar
+    AVS_CS_GENERIC_YUV444  = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_1 | AVS_CS_SUB_WIDTH_1,  // 4:4:4 planar
+    AVS_CS_GENERIC_Y       = AVS_CS_PLANAR | AVS_CS_INTERLEAVED | AVS_CS_YUV,                                             // Y only (4:0:0)
+    AVS_CS_GENERIC_RGBP    = AVS_CS_PLANAR | AVS_CS_BGR | AVS_CS_RGB_TYPE,                                                // planar RGB
+    AVS_CS_GENERIC_RGBAP   = AVS_CS_PLANAR | AVS_CS_BGR | AVS_CS_RGBA_TYPE,                                               // planar RGBA
+    AVS_CS_GENERIC_YUVA420 = AVS_CS_PLANAR | AVS_CS_YUVA | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_2 | AVS_CS_SUB_WIDTH_2, // 4:2:0:A planar
+    AVS_CS_GENERIC_YUVA422 = AVS_CS_PLANAR | AVS_CS_YUVA | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_1 | AVS_CS_SUB_WIDTH_2, // 4:2:2:A planar
+    AVS_CS_GENERIC_YUVA444 = AVS_CS_PLANAR | AVS_CS_YUVA | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_1 | AVS_CS_SUB_WIDTH_1 }; // 4:4:4:A planar
+
+
+  // Specific color formats
 enum {
   AVS_CS_UNKNOWN = 0,
-  AVS_CS_BGR24 = 1<<0 | AVS_CS_BGR | AVS_CS_INTERLEAVED,
-  AVS_CS_BGR32 = 1<<1 | AVS_CS_BGR | AVS_CS_INTERLEAVED,
+  AVS_CS_BGR24 = AVS_CS_RGB_TYPE  | AVS_CS_BGR | AVS_CS_INTERLEAVED,
+  AVS_CS_BGR32 = AVS_CS_RGBA_TYPE | AVS_CS_BGR | AVS_CS_INTERLEAVED,
   AVS_CS_YUY2 = 1<<2 | AVS_CS_YUV | AVS_CS_INTERLEAVED,
   //  AVS_CS_YV12  = 1<<3  Reserved
   //  AVS_CS_I420  = 1<<4  Reserved
   AVS_CS_RAW32 = 1<<5 | AVS_CS_INTERLEAVED,
 
-  AVS_CS_YV24  = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_SAMPLE_BITS_8 | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_1 | AVS_CS_SUB_WIDTH_1,  // YVU 4:4:4 planar
-  AVS_CS_YV16  = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_SAMPLE_BITS_8 | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_1 | AVS_CS_SUB_WIDTH_2,  // YVU 4:2:2 planar
-  AVS_CS_YV12  = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_SAMPLE_BITS_8 | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_2 | AVS_CS_SUB_WIDTH_2,  // YVU 4:2:0 planar
+  AVS_CS_YV24  = AVS_CS_GENERIC_YUV444 | AVS_CS_SAMPLE_BITS_8,  // YUV 4:4:4 planar
+  AVS_CS_YV16  = AVS_CS_GENERIC_YUV422 | AVS_CS_SAMPLE_BITS_8,  // YUV 4:2:2 planar
+  AVS_CS_YV12  = AVS_CS_GENERIC_YUV420 | AVS_CS_SAMPLE_BITS_8,  // YUV 4:2:0 planar
   AVS_CS_I420  = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_SAMPLE_BITS_8 | AVS_CS_UPLANEFIRST | AVS_CS_SUB_HEIGHT_2 | AVS_CS_SUB_WIDTH_2,  // YUV 4:2:0 planar
   AVS_CS_IYUV  = AVS_CS_I420,
-  AVS_CS_YV411 = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_SAMPLE_BITS_8 | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_1 | AVS_CS_SUB_WIDTH_4,  // YVU 4:1:1 planar
-  AVS_CS_YUV9  = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_SAMPLE_BITS_8 | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_4 | AVS_CS_SUB_WIDTH_4,  // YVU 4:1:0 planar
-  AVS_CS_Y8    = AVS_CS_PLANAR | AVS_CS_INTERLEAVED | AVS_CS_YUV | AVS_CS_SAMPLE_BITS_8                                              // Y   4:0:0 planar
+  AVS_CS_YV411 = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_SAMPLE_BITS_8 | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_1 | AVS_CS_SUB_WIDTH_4,  // YUV 4:1:1 planar
+  AVS_CS_YUV9  = AVS_CS_PLANAR | AVS_CS_YUV | AVS_CS_SAMPLE_BITS_8 | AVS_CS_VPLANEFIRST | AVS_CS_SUB_HEIGHT_4 | AVS_CS_SUB_WIDTH_4,  // YUV 4:1:0 planar
+  AVS_CS_Y8    = AVS_CS_GENERIC_Y | AVS_CS_SAMPLE_BITS_8,       // Y   4:0:0 planar
+
+  //-------------------------
+  // AVS16: new planar constants go live! Experimental PF 160613
+  // 10-12-14-16 bit + planar RGB + BGR48/64 160725
+  AVS_CS_YUV444P10 = AVS_CS_GENERIC_YUV444 | AVS_CS_SAMPLE_BITS_10, // YUV 4:4:4 10bit samples
+  AVS_CS_YUV422P10 = AVS_CS_GENERIC_YUV422 | AVS_CS_SAMPLE_BITS_10, // YUV 4:2:2 10bit samples
+  AVS_CS_YUV420P10 = AVS_CS_GENERIC_YUV420 | AVS_CS_SAMPLE_BITS_10, // YUV 4:2:0 10bit samples
+  AVS_CS_Y10       = AVS_CS_GENERIC_Y | AVS_CS_SAMPLE_BITS_10,      // Y   4:0:0 10bit samples
+
+  AVS_CS_YUV444P12 = AVS_CS_GENERIC_YUV444 | AVS_CS_SAMPLE_BITS_12, // YUV 4:4:4 12bit samples
+  AVS_CS_YUV422P12 = AVS_CS_GENERIC_YUV422 | AVS_CS_SAMPLE_BITS_12, // YUV 4:2:2 12bit samples
+  AVS_CS_YUV420P12 = AVS_CS_GENERIC_YUV420 | AVS_CS_SAMPLE_BITS_12, // YUV 4:2:0 12bit samples
+  AVS_CS_Y12       = AVS_CS_GENERIC_Y | AVS_CS_SAMPLE_BITS_12,      // Y   4:0:0 12bit samples
+
+  AVS_CS_YUV444P14 = AVS_CS_GENERIC_YUV444 | AVS_CS_SAMPLE_BITS_14, // YUV 4:4:4 14bit samples
+  AVS_CS_YUV422P14 = AVS_CS_GENERIC_YUV422 | AVS_CS_SAMPLE_BITS_14, // YUV 4:2:2 14bit samples
+  AVS_CS_YUV420P14 = AVS_CS_GENERIC_YUV420 | AVS_CS_SAMPLE_BITS_14, // YUV 4:2:0 14bit samples
+  AVS_CS_Y14       = AVS_CS_GENERIC_Y | AVS_CS_SAMPLE_BITS_14,      // Y   4:0:0 14bit samples
+
+  AVS_CS_YUV444P16 = AVS_CS_GENERIC_YUV444 | AVS_CS_SAMPLE_BITS_16, // YUV 4:4:4 16bit samples
+  AVS_CS_YUV422P16 = AVS_CS_GENERIC_YUV422 | AVS_CS_SAMPLE_BITS_16, // YUV 4:2:2 16bit samples
+  AVS_CS_YUV420P16 = AVS_CS_GENERIC_YUV420 | AVS_CS_SAMPLE_BITS_16, // YUV 4:2:0 16bit samples
+  AVS_CS_Y16       = AVS_CS_GENERIC_Y | AVS_CS_SAMPLE_BITS_16,      // Y   4:0:0 16bit samples
+
+  // 32 bit samples (float)
+  AVS_CS_YUV444PS = AVS_CS_GENERIC_YUV444 | AVS_CS_SAMPLE_BITS_32,  // YUV 4:4:4 32bit samples
+  AVS_CS_YUV422PS = AVS_CS_GENERIC_YUV422 | AVS_CS_SAMPLE_BITS_32,  // YUV 4:2:2 32bit samples
+  AVS_CS_YUV420PS = AVS_CS_GENERIC_YUV420 | AVS_CS_SAMPLE_BITS_32,  // YUV 4:2:0 32bit samples
+  AVS_CS_Y32      = AVS_CS_GENERIC_Y | AVS_CS_SAMPLE_BITS_32,       // Y   4:0:0 32bit samples
+
+  // RGB packed
+  AVS_CS_BGR48 = AVS_CS_RGB_TYPE | AVS_CS_BGR | AVS_CS_INTERLEAVED | AVS_CS_SAMPLE_BITS_16,    // BGR 3x16 bit
+  AVS_CS_BGR64 = AVS_CS_RGBA_TYPE | AVS_CS_BGR | AVS_CS_INTERLEAVED | AVS_CS_SAMPLE_BITS_16,    // BGR 4x16 bit
+  // no packed 32 bit (float) support for these legacy types
+
+  // RGB planar
+  AVS_CS_RGBP   = AVS_CS_GENERIC_RGBP | AVS_CS_SAMPLE_BITS_8,  // Planar RGB 8 bit samples
+  AVS_CS_RGBP10 = AVS_CS_GENERIC_RGBP | AVS_CS_SAMPLE_BITS_10, // Planar RGB 10bit samples
+  AVS_CS_RGBP12 = AVS_CS_GENERIC_RGBP | AVS_CS_SAMPLE_BITS_12, // Planar RGB 12bit samples
+  AVS_CS_RGBP14 = AVS_CS_GENERIC_RGBP | AVS_CS_SAMPLE_BITS_14, // Planar RGB 14bit samples
+  AVS_CS_RGBP16 = AVS_CS_GENERIC_RGBP | AVS_CS_SAMPLE_BITS_16, // Planar RGB 16bit samples
+  AVS_CS_RGBPS  = AVS_CS_GENERIC_RGBP | AVS_CS_SAMPLE_BITS_32, // Planar RGB 32bit samples
+
+  // RGBA planar
+  AVS_CS_RGBAP   = AVS_CS_GENERIC_RGBAP | AVS_CS_SAMPLE_BITS_8,  // Planar RGBA 8 bit samples
+  AVS_CS_RGBAP10 = AVS_CS_GENERIC_RGBAP | AVS_CS_SAMPLE_BITS_10, // Planar RGBA 10bit samples
+  AVS_CS_RGBAP12 = AVS_CS_GENERIC_RGBAP | AVS_CS_SAMPLE_BITS_12, // Planar RGBA 12bit samples
+  AVS_CS_RGBAP14 = AVS_CS_GENERIC_RGBAP | AVS_CS_SAMPLE_BITS_14, // Planar RGBA 14bit samples
+  AVS_CS_RGBAP16 = AVS_CS_GENERIC_RGBAP | AVS_CS_SAMPLE_BITS_16, // Planar RGBA 16bit samples
+  AVS_CS_RGBAPS  = AVS_CS_GENERIC_RGBAP | AVS_CS_SAMPLE_BITS_32, // Planar RGBA 32bit samples
+
+  // Planar YUVA
+  AVS_CS_YUVA444    = AVS_CS_GENERIC_YUVA444 | AVS_CS_SAMPLE_BITS_8,  // YUVA 4:4:4 8bit samples
+  AVS_CS_YUVA422    = AVS_CS_GENERIC_YUVA422 | AVS_CS_SAMPLE_BITS_8,  // YUVA 4:2:2 8bit samples
+  AVS_CS_YUVA420    = AVS_CS_GENERIC_YUVA420 | AVS_CS_SAMPLE_BITS_8,  // YUVA 4:2:0 8bit samples
+
+  AVS_CS_YUVA444P10 = AVS_CS_GENERIC_YUVA444 | AVS_CS_SAMPLE_BITS_10, // YUVA 4:4:4 10bit samples
+  AVS_CS_YUVA422P10 = AVS_CS_GENERIC_YUVA422 | AVS_CS_SAMPLE_BITS_10, // YUVA 4:2:2 10bit samples
+  AVS_CS_YUVA420P10 = AVS_CS_GENERIC_YUVA420 | AVS_CS_SAMPLE_BITS_10, // YUVA 4:2:0 10bit samples
+
+  AVS_CS_YUVA444P12 = AVS_CS_GENERIC_YUVA444 | AVS_CS_SAMPLE_BITS_12, // YUVA 4:4:4 12bit samples
+  AVS_CS_YUVA422P12 = AVS_CS_GENERIC_YUVA422 | AVS_CS_SAMPLE_BITS_12, // YUVA 4:2:2 12bit samples
+  AVS_CS_YUVA420P12 = AVS_CS_GENERIC_YUVA420 | AVS_CS_SAMPLE_BITS_12, // YUVA 4:2:0 12bit samples
+
+  AVS_CS_YUVA444P14 = AVS_CS_GENERIC_YUVA444 | AVS_CS_SAMPLE_BITS_14, // YUVA 4:4:4 14bit samples
+  AVS_CS_YUVA422P14 = AVS_CS_GENERIC_YUVA422 | AVS_CS_SAMPLE_BITS_14, // YUVA 4:2:2 14bit samples
+  AVS_CS_YUVA420P14 = AVS_CS_GENERIC_YUVA420 | AVS_CS_SAMPLE_BITS_14, // YUVA 4:2:0 14bit samples
+
+  AVS_CS_YUVA444P16 = AVS_CS_GENERIC_YUVA444 | AVS_CS_SAMPLE_BITS_16, // YUVA 4:4:4 16bit samples
+  AVS_CS_YUVA422P16 = AVS_CS_GENERIC_YUVA422 | AVS_CS_SAMPLE_BITS_16, // YUVA 4:2:2 16bit samples
+  AVS_CS_YUVA420P16 = AVS_CS_GENERIC_YUVA420 | AVS_CS_SAMPLE_BITS_16, // YUVA 4:2:0 16bit samples
+
+  AVS_CS_YUVA444PS  = AVS_CS_GENERIC_YUVA444 | AVS_CS_SAMPLE_BITS_32,  // YUVA 4:4:4 32bit samples
+  AVS_CS_YUVA422PS  = AVS_CS_GENERIC_YUVA422 | AVS_CS_SAMPLE_BITS_32,  // YUVA 4:2:2 32bit samples
+  AVS_CS_YUVA420PS  = AVS_CS_GENERIC_YUVA420 | AVS_CS_SAMPLE_BITS_32,  // YUVA 4:2:0 32bit samples
+
 };
 
 enum {
@@ -180,58 +483,147 @@ enum {  //SUBTYPES
 
 enum {
   // New 2.6 explicitly defined cache hints.
-  AVS_CACHE_NOTHING=10, // Do not cache video.
-  AVS_CACHE_WINDOW=11, // Hard protect upto X frames within a range of X from the current frame N.
-  AVS_CACHE_GENERIC=12, // LRU cache upto X frames.
-  AVS_CACHE_FORCE_GENERIC=13, // LRU cache upto X frames, override any previous CACHE_WINDOW.
-
-  AVS_CACHE_GET_POLICY=30, // Get the current policy.
-  AVS_CACHE_GET_WINDOW=31, // Get the current window h_span.
-  AVS_CACHE_GET_RANGE=32, // Get the current generic frame range.
-
-  AVS_CACHE_AUDIO=50, // Explicitly do cache audio, X byte cache.
-  AVS_CACHE_AUDIO_NOTHING=51, // Explicitly do not cache audio.
-  AVS_CACHE_AUDIO_NONE=52, // Audio cache off (auto mode), X byte intial cache.
-  AVS_CACHE_AUDIO_AUTO=53, // Audio cache on (auto mode), X byte intial cache.
-
-  AVS_CACHE_GET_AUDIO_POLICY=70, // Get the current audio policy.
-  AVS_CACHE_GET_AUDIO_SIZE=71, // Get the current audio cache size.
-
-  AVS_CACHE_PREFETCH_FRAME=100, // Queue request to prefetch frame N.
-  AVS_CACHE_PREFETCH_GO=101, // Action video prefetches.
-
-  AVS_CACHE_PREFETCH_AUDIO_BEGIN=120, // Begin queue request transaction to prefetch audio (take critical section).
-  AVS_CACHE_PREFETCH_AUDIO_STARTLO=121, // Set low 32 bits of start.
-  AVS_CACHE_PREFETCH_AUDIO_STARTHI=122, // Set high 32 bits of start.
-  AVS_CACHE_PREFETCH_AUDIO_COUNT=123, // Set low 32 bits of length.
-  AVS_CACHE_PREFETCH_AUDIO_COMMIT=124, // Enqueue request transaction to prefetch audio (release critical section).
-  AVS_CACHE_PREFETCH_AUDIO_GO=125, // Action audio prefetches.
-
-  AVS_CACHE_GETCHILD_CACHE_MODE=200, // Cache ask Child for desired video cache mode.
-  AVS_CACHE_GETCHILD_CACHE_SIZE=201, // Cache ask Child for desired video cache size.
-  AVS_CACHE_GETCHILD_AUDIO_MODE=202, // Cache ask Child for desired audio cache mode.
-  AVS_CACHE_GETCHILD_AUDIO_SIZE=203, // Cache ask Child for desired audio cache size.
-
-  AVS_CACHE_GETCHILD_COST=220, // Cache ask Child for estimated processing cost.
-    AVS_CACHE_COST_ZERO=221, // Child response of zero cost (ptr arithmetic only).
-    AVS_CACHE_COST_UNIT=222, // Child response of unit cost (less than or equal 1 full frame blit).
-    AVS_CACHE_COST_LOW=223, // Child response of light cost. (Fast)
-    AVS_CACHE_COST_MED=224, // Child response of medium cost. (Real time)
-    AVS_CACHE_COST_HI=225, // Child response of heavy cost. (Slow)
-
-  AVS_CACHE_GETCHILD_THREAD_MODE=240, // Cache ask Child for thread safetyness.
-    AVS_CACHE_THREAD_UNSAFE=241, // Only 1 thread allowed for all instances. 2.5 filters default!
-    AVS_CACHE_THREAD_CLASS=242, // Only 1 thread allowed for each instance. 2.6 filters default!
-    AVS_CACHE_THREAD_SAFE=243, //  Allow all threads in any instance.
-    AVS_CACHE_THREAD_OWN=244, // Safe but limit to 1 thread, internally threaded.
-
-  AVS_CACHE_GETCHILD_ACCESS_COST=260, // Cache ask Child for preferred access pattern.
-    AVS_CACHE_ACCESS_RAND=261, // Filter is access order agnostic.
-    AVS_CACHE_ACCESS_SEQ0=262, // Filter prefers sequential access (low cost)
-    AVS_CACHE_ACCESS_SEQ1=263, // Filter needs sequential access (high cost)
-  };
-
-#define AVS_FRAME_ALIGN 16
+  AVS_CACHE_NOTHING = 10, // Do not cache video.
+  AVS_CACHE_WINDOW = 11, // Hard protect up to X frames within a range of X from the current frame N.
+  AVS_CACHE_GENERIC = 12, // LRU cache up to X frames.
+  AVS_CACHE_FORCE_GENERIC = 13, // LRU cache up to X frames, override any previous CACHE_WINDOW.
+
+  AVS_CACHE_GET_POLICY = 30, // Get the current policy.
+  AVS_CACHE_GET_WINDOW = 31, // Get the current window h_span.
+  AVS_CACHE_GET_RANGE = 32, // Get the current generic frame range.
+
+  AVS_CACHE_AUDIO = 50, // Explicitly do cache audio, X byte cache.
+  AVS_CACHE_AUDIO_NOTHING = 51, // Explicitly do not cache audio.
+  AVS_CACHE_AUDIO_NONE = 52, // Audio cache off (auto mode), X byte initial cache.
+  AVS_CACHE_AUDIO_AUTO = 53, // Audio cache on (auto mode), X byte initial cache.
+
+  AVS_CACHE_GET_AUDIO_POLICY = 70, // Get the current audio policy.
+  AVS_CACHE_GET_AUDIO_SIZE = 71, // Get the current audio cache size.
+
+  AVS_CACHE_PREFETCH_FRAME = 100, // Queue request to prefetch frame N..
+  AVS_CACHE_PREFETCH_GO = 101, // Action video prefetches.
+
+  AVS_CACHE_PREFETCH_AUDIO_BEGIN = 120, // Begin queue request transaction to prefetch audio (take critical section).
+  AVS_CACHE_PREFETCH_AUDIO_STARTLO = 121, // Set low 32 bits of start.
+  AVS_CACHE_PREFETCH_AUDIO_STARTHI = 122, // Set high 32 bits of start..
+  AVS_CACHE_PREFETCH_AUDIO_COUNT = 123, // Set low 32 bits of length.
+  AVS_CACHE_PREFETCH_AUDIO_COMMIT = 124, // Enqueue request transaction to prefetch audio (release critical section).
+  AVS_CACHE_PREFETCH_AUDIO_GO = 125, // Action audio prefetches.
+
+  AVS_CACHE_GETCHILD_CACHE_MODE = 200, // Cache ask Child for desired video cache mode.
+  AVS_CACHE_GETCHILD_CACHE_SIZE = 201, // Cache ask Child for desired video cache size.
+  AVS_CACHE_GETCHILD_AUDIO_MODE = 202, // Cache ask Child for desired audio cache mode.
+  AVS_CACHE_GETCHILD_AUDIO_SIZE = 203, // Cache ask Child for desired audio cache size.
+
+  AVS_CACHE_GETCHILD_COST = 220, // Cache ask Child for estimated processing cost.
+  AVS_CACHE_COST_ZERO = 221, // Child response of zero cost (ptr arithmetic only).
+  AVS_CACHE_COST_UNIT = 222, // Child response of unit cost (less than or equal 1 full frame blit).
+  AVS_CACHE_COST_LOW = 223, // Child response of light cost. (Fast)
+  AVS_CACHE_COST_MED = 224, // Child response of medium cost. (Real time)
+  AVS_CACHE_COST_HI = 225, // Child response of heavy cost. (Slow)
+
+  AVS_CACHE_GETCHILD_THREAD_MODE = 240, // Cache ask Child for thread safety.
+  AVS_CACHE_THREAD_UNSAFE = 241, // Only 1 thread allowed for all instances. 2.5 filters default!
+  AVS_CACHE_THREAD_CLASS = 242, // Only 1 thread allowed for each instance. 2.6 filters default!
+  AVS_CACHE_THREAD_SAFE = 243, //  Allow all threads in any instance.
+  AVS_CACHE_THREAD_OWN = 244, // Safe but limit to 1 thread, internally threaded.
+
+  AVS_CACHE_GETCHILD_ACCESS_COST = 260, // Cache ask Child for preferred access pattern.
+  AVS_CACHE_ACCESS_RAND = 261, // Filter is access order agnostic.
+  AVS_CACHE_ACCESS_SEQ0 = 262, // Filter prefers sequential access (low cost)
+  AVS_CACHE_ACCESS_SEQ1 = 263, // Filter needs sequential access (high cost)
+
+  AVS_CACHE_AVSPLUS_CONSTANTS = 500,    // Smaller values are reserved for classic Avisynth
+
+  AVS_CACHE_DONT_CACHE_ME = 501,              // Filters that don't need caching (eg. trim, cache etc.) should return 1 to this request
+  AVS_CACHE_SET_MIN_CAPACITY = 502,
+  AVS_CACHE_SET_MAX_CAPACITY = 503,
+  AVS_CACHE_GET_MIN_CAPACITY = 504,
+  AVS_CACHE_GET_MAX_CAPACITY = 505,
+  AVS_CACHE_GET_SIZE = 506,
+  AVS_CACHE_GET_REQUESTED_CAP = 507,
+  AVS_CACHE_GET_CAPACITY = 508,
+  AVS_CACHE_GET_MTMODE = 509,
+
+  AVS_CACHE_IS_CACHE_REQ = 510,
+  AVS_CACHE_IS_CACHE_ANS = 511,
+  AVS_CACHE_IS_MTGUARD_REQ = 512,
+  AVS_CACHE_IS_MTGUARD_ANS = 513,
+
+  AVS_CACHE_AVSPLUS_CUDA_CONSTANTS = 600,
+
+  AVS_CACHE_GET_DEV_TYPE = 601,          // Device types a filter can return
+  AVS_CACHE_GET_CHILD_DEV_TYPE = 602,    // Device types a fitler can receive
+
+  AVS_CACHE_USER_CONSTANTS = 1000       // Smaller values are reserved for the core
+
+};
+
+
+
+// enums for frame property functions
+// AVSPropTypes
+enum {
+  AVS_PROPTYPE_UNSET = 'u',
+  AVS_PROPTYPE_INT = 'i',
+  AVS_PROPTYPE_FLOAT = 'f',
+  AVS_PROPTYPE_DATA = 's',
+  AVS_PROPTYPE_CLIP = 'c',
+  AVS_PROPTYPE_FRAME = 'v'
+};
+
+// AVSGetPropErrors for avs_prop_get_...
+enum {
+  AVS_GETPROPERROR_UNSET = 1,
+  AVS_GETPROPERROR_TYPE = 2,
+  AVS_GETPROPERROR_INDEX = 4
+};
+
+// AVSPropAppendMode for avs_prop_set_...
+enum {
+  AVS_PROPAPPENDMODE_REPLACE = 0,
+  AVS_PROPAPPENDMODE_APPEND = 1,
+  AVS_PROPAPPENDMODE_TOUCH = 2
+};
+
+// AvsEnvProperty for avs_get_env_property
+enum
+{
+  AVS_AEP_PHYSICAL_CPUS = 1,
+  AVS_AEP_LOGICAL_CPUS = 2,
+  AVS_AEP_THREADPOOL_THREADS = 3,
+  AVS_AEP_FILTERCHAIN_THREADS = 4,
+  AVS_AEP_THREAD_ID = 5,
+  AVS_AEP_VERSION = 6,
+  AVS_AEP_HOST_SYSTEM_ENDIANNESS = 7,
+  AVS_AEP_INTERFACE_VERSION = 8,
+  AVS_AEP_INTERFACE_BUGFIX = 9,
+
+  // Neo additionals
+  AVS_AEP_NUM_DEVICES = 901,
+  AVS_AEP_FRAME_ALIGN = 902,
+  AVS_AEP_PLANE_ALIGN = 903,
+
+  AVS_AEP_SUPPRESS_THREAD = 921,
+  AVS_AEP_GETFRAME_RECURSIVE = 922
+};
+
+// enum AvsAllocType for avs_allocate
+enum {
+  AVS_ALLOCTYPE_NORMAL_ALLOC = 1,
+  AVS_ALLOCTYPE_POOLED_ALLOC = 2
+};
+
+#ifdef BUILDING_AVSCORE
+AVSValue create_c_video_filter(AVSValue args, void * user_data, IScriptEnvironment * e0);
+
+struct AVS_ScriptEnvironment {
+        IScriptEnvironment * env;
+        const char * error;
+        AVS_ScriptEnvironment(IScriptEnvironment * e = 0)
+                : env(e), error(0) {}
+};
+#endif
 
 typedef struct AVS_Clip AVS_Clip;
 typedef struct AVS_ScriptEnvironment AVS_ScriptEnvironment;
@@ -241,7 +633,7 @@ typedef struct AVS_ScriptEnvironment AVS_ScriptEnvironment;
 // AVS_VideoInfo
 //
 
-// AVS_VideoInfo is layed out identicly to VideoInfo
+// AVS_VideoInfo is laid out identically to VideoInfo
 typedef struct AVS_VideoInfo {
   int width, height;    // width=0 means no video
   unsigned fps_numerator, fps_denominator;
@@ -251,10 +643,10 @@ typedef struct AVS_VideoInfo {
 
   int audio_samples_per_second;   // 0 means no audio
   int sample_type;
-  INT64 num_audio_samples;
+  int64_t num_audio_samples;
   int nchannels;
 
-  // Imagetype properties
+  // Image type properties
 
   int image_type;
 } AVS_VideoInfo;
@@ -281,117 +673,81 @@ AVSC_INLINE int avs_is_yuv(const AVS_VideoInfo * p)
 AVSC_INLINE int avs_is_yuy2(const AVS_VideoInfo * p)
         { return (p->pixel_type & AVS_CS_YUY2) == AVS_CS_YUY2; }
 
-AVSC_API(int, avs_is_yv24)(const AVS_VideoInfo * p);
+AVSC_API(int, avs_is_yv24)(const AVS_VideoInfo * p); // avs+: for generic 444 check, use avs_is_yuv444
 
-AVSC_API(int, avs_is_yv16)(const AVS_VideoInfo * p);
+AVSC_API(int, avs_is_yv16)(const AVS_VideoInfo * p); // avs+: for generic 422 check, use avs_is_yuv422
 
-AVSC_API(int, avs_is_yv12)(const AVS_VideoInfo * p);
+AVSC_API(int, avs_is_yv12)(const AVS_VideoInfo * p) ; // avs+: for generic 420 check, use avs_is_yuv420
 
 AVSC_API(int, avs_is_yv411)(const AVS_VideoInfo * p);
 
-AVSC_API(int, avs_is_y8)(const AVS_VideoInfo * p);
+AVSC_API(int, avs_is_y8)(const AVS_VideoInfo * p); // avs+: for generic grayscale, use avs_is_y
 
 #ifdef AVSC_NO_DECLSPEC
 AVSC_INLINE int avs_is_yv24(const AVS_VideoInfo * p)
-        { return (p->pixel_type & AVS_CS_PLANAR_MASK) == (AVS_CS_YV24  & AVS_CS_PLANAR_FILTER); }
+        { return (p->pixel_type & AVS_CS_PLANAR_MASK) == (AVS_CS_YV24 & AVS_CS_PLANAR_FILTER); }
 
 AVSC_INLINE int avs_is_yv16(const AVS_VideoInfo * p)
-        { return (p->pixel_type & AVS_CS_PLANAR_MASK) == (AVS_CS_YV16  & AVS_CS_PLANAR_FILTER); }
+        { return (p->pixel_type & AVS_CS_PLANAR_MASK) == (AVS_CS_YV16 & AVS_CS_PLANAR_FILTER); }
 
 AVSC_INLINE int avs_is_yv12(const AVS_VideoInfo * p)
-        { return (p->pixel_type & AVS_CS_PLANAR_MASK) == (AVS_CS_YV12  & AVS_CS_PLANAR_FILTER); }
+        { return (p->pixel_type & AVS_CS_PLANAR_MASK) == (AVS_CS_YV12 & AVS_CS_PLANAR_FILTER); }
 
 AVSC_INLINE int avs_is_yv411(const AVS_VideoInfo * p)
         { return (p->pixel_type & AVS_CS_PLANAR_MASK) == (AVS_CS_YV411 & AVS_CS_PLANAR_FILTER); }
 
 AVSC_INLINE int avs_is_y8(const AVS_VideoInfo * p)
-        { return (p->pixel_type & AVS_CS_PLANAR_MASK) == (AVS_CS_Y8    & AVS_CS_PLANAR_FILTER); }
+        { return (p->pixel_type & AVS_CS_PLANAR_MASK) == (AVS_CS_Y8 & AVS_CS_PLANAR_FILTER); }
 #endif
 
-#if 1 // AviSynth+ extension
-AVSC_API(int, avs_is_rgb48)(const AVS_VideoInfo * p);
-
-AVSC_API(int, avs_is_rgb64)(const AVS_VideoInfo * p);
-
-AVSC_API(int, avs_is_yuv444p16)(const AVS_VideoInfo * p);
-
-AVSC_API(int, avs_is_yuv422p16)(const AVS_VideoInfo * p);
-
-AVSC_API(int, avs_is_yuv420p16)(const AVS_VideoInfo * p);
-
-AVSC_API(int, avs_is_y16)(const AVS_VideoInfo * p);
-
-AVSC_API(int, avs_is_yuv444ps)(const AVS_VideoInfo * p);
-
-AVSC_API(int, avs_is_yuv422ps)(const AVS_VideoInfo * p);
-
-AVSC_API(int, avs_is_yuv420ps)(const AVS_VideoInfo * p);
-
-AVSC_API(int, avs_is_y32)(const AVS_VideoInfo * p);
-
-AVSC_API(int, avs_is_444)(const AVS_VideoInfo * p);
-
-AVSC_API(int, avs_is_422)(const AVS_VideoInfo * p);
-
-AVSC_API(int, avs_is_420)(const AVS_VideoInfo * p);
-
-AVSC_API(int, avs_is_y)(const AVS_VideoInfo * p);
+AVSC_API(int, avs_get_plane_width_subsampling)(const AVS_VideoInfo * p, int plane);
 
-AVSC_API(int, avs_is_yuva)(const AVS_VideoInfo * p);
+AVSC_API(int, avs_get_plane_height_subsampling)(const AVS_VideoInfo * p, int plane);
 
-AVSC_API(int, avs_is_planar_rgb)(const AVS_VideoInfo * p);
+AVSC_API(int, avs_bits_per_pixel)(const AVS_VideoInfo * p);
 
-AVSC_API(int, avs_is_planar_rgba)(const AVS_VideoInfo * p);
+AVSC_API(int, avs_bytes_from_pixels)(const AVS_VideoInfo * p, int pixels);
 
-AVSC_API(int, avs_num_components)(const AVS_VideoInfo * p);
+AVSC_API(int, avs_row_size)(const AVS_VideoInfo * p, int plane);
 
-AVSC_API(int, avs_component_size)(const AVS_VideoInfo * p);
+AVSC_API(int, avs_bmp_size)(const AVS_VideoInfo * vi);
 
-AVSC_API(int, avs_bits_per_component)(const AVS_VideoInfo * p);
-#endif
+AVSC_API(int, avs_is_color_space)(const AVS_VideoInfo * p, int c_space);
 
+// no API for these, inline helper functions
 AVSC_INLINE int avs_is_property(const AVS_VideoInfo * p, int property)
-        { return ((p->image_type & property)==property ); }
+{
+  return ((p->image_type & property) == property);
+}
 
 AVSC_INLINE int avs_is_planar(const AVS_VideoInfo * p)
-        { return !!(p->pixel_type & AVS_CS_PLANAR); }
-
-AVSC_API(int, avs_is_color_space)(const AVS_VideoInfo * p, int c_space);
+{
+  return !!(p->pixel_type & AVS_CS_PLANAR);
+}
 
 AVSC_INLINE int avs_is_field_based(const AVS_VideoInfo * p)
-        { return !!(p->image_type & AVS_IT_FIELDBASED); }
+{
+  return !!(p->image_type & AVS_IT_FIELDBASED);
+}
 
 AVSC_INLINE int avs_is_parity_known(const AVS_VideoInfo * p)
-        { return ((p->image_type & AVS_IT_FIELDBASED)&&(p->image_type & (AVS_IT_BFF | AVS_IT_TFF))); }
+{
+  return ((p->image_type & AVS_IT_FIELDBASED) && (p->image_type & (AVS_IT_BFF | AVS_IT_TFF)));
+}
 
 AVSC_INLINE int avs_is_bff(const AVS_VideoInfo * p)
-        { return !!(p->image_type & AVS_IT_BFF); }
+{
+  return !!(p->image_type & AVS_IT_BFF);
+}
 
 AVSC_INLINE int avs_is_tff(const AVS_VideoInfo * p)
-        { return !!(p->image_type & AVS_IT_TFF); }
-
-AVSC_API(int, avs_get_plane_width_subsampling)(const AVS_VideoInfo * p, int plane);
-
-AVSC_API(int, avs_get_plane_height_subsampling)(const AVS_VideoInfo * p, int plane);
-
-
-AVSC_API(int, avs_bits_per_pixel)(const AVS_VideoInfo * p);
-
-AVSC_API(int, avs_bytes_from_pixels)(const AVS_VideoInfo * p, int pixels);
-
-AVSC_API(int, avs_row_size_p)(const AVS_VideoInfo * p, int plane);
-
-#ifndef AVSC_NO_DECLSPEC
-AVSC_INLINE int avs_row_size(const AVS_VideoInfo * p)
-        { return avs_row_size_p(p, 0); }
-#endif
-
-AVSC_API(int, avs_bmp_size)(const AVS_VideoInfo * vi);
+{
+  return !!(p->image_type & AVS_IT_TFF);
+}
 
 AVSC_INLINE int avs_samples_per_second(const AVS_VideoInfo * p)
         { return p->audio_samples_per_second; }
 
-
 AVSC_INLINE int avs_bytes_per_channel_sample(const AVS_VideoInfo * p)
 {
     switch (p->sample_type) {
@@ -403,28 +759,30 @@ AVSC_INLINE int avs_bytes_per_channel_sample(const AVS_VideoInfo * p)
       default: return 0;
     }
 }
+
 AVSC_INLINE int avs_bytes_per_audio_sample(const AVS_VideoInfo * p)
-        { return p->nchannels*avs_bytes_per_channel_sample(p);}
+        { return p->nchannels*avs_bytes_per_channel_sample(p); }
 
-AVSC_INLINE INT64 avs_audio_samples_from_frames(const AVS_VideoInfo * p, INT64 frames)
-        { return ((INT64)(frames) * p->audio_samples_per_second * p->fps_denominator / p->fps_numerator); }
+AVSC_INLINE int64_t avs_audio_samples_from_frames(const AVS_VideoInfo * p, int64_t frames)
+        { return ((int64_t)(frames) * p->audio_samples_per_second * p->fps_denominator / p->fps_numerator); }
 
-AVSC_INLINE int avs_frames_from_audio_samples(const AVS_VideoInfo * p, INT64 samples)
-        { return (int)(samples * (INT64)p->fps_numerator / (INT64)p->fps_denominator / (INT64)p->audio_samples_per_second); }
+AVSC_INLINE int avs_frames_from_audio_samples(const AVS_VideoInfo * p, int64_t samples)
+        { return (int)(samples * (int64_t)p->fps_numerator / (int64_t)p->fps_denominator / (int64_t)p->audio_samples_per_second); }
 
-AVSC_INLINE INT64 avs_audio_samples_from_bytes(const AVS_VideoInfo * p, INT64 bytes)
+AVSC_INLINE int64_t avs_audio_samples_from_bytes(const AVS_VideoInfo * p, int64_t bytes)
         { return bytes / avs_bytes_per_audio_sample(p); }
 
-AVSC_INLINE INT64 avs_bytes_from_audio_samples(const AVS_VideoInfo * p, INT64 samples)
+AVSC_INLINE int64_t avs_bytes_from_audio_samples(const AVS_VideoInfo * p, int64_t samples)
         { return samples * avs_bytes_per_audio_sample(p); }
 
 AVSC_INLINE int avs_audio_channels(const AVS_VideoInfo * p)
         { return p->nchannels; }
 
 AVSC_INLINE int avs_sample_type(const AVS_VideoInfo * p)
-        { return p->sample_type;}
+        { return p->sample_type; }
 
 // useful mutator
+// Note: these are video format properties, neither frame properties, nor system properties
 AVSC_INLINE void avs_set_property(AVS_VideoInfo * p, int property)
         { p->image_type|=property; }
 
@@ -444,12 +802,48 @@ AVSC_INLINE void avs_set_fps(AVS_VideoInfo * p, unsigned numerator, unsigned den
     p->fps_denominator = denominator/x;
 }
 
-AVSC_INLINE int avs_is_same_colorspace(AVS_VideoInfo * x, AVS_VideoInfo * y)
+AVSC_INLINE int avs_is_same_colorspace(const AVS_VideoInfo * x, const AVS_VideoInfo * y)
 {
         return (x->pixel_type == y->pixel_type)
                 || (avs_is_yv12(x) && avs_is_yv12(y));
 }
 
+// AviSynth+ extensions
+AVSC_API(int, avs_is_rgb48)(const AVS_VideoInfo * p);
+
+AVSC_API(int, avs_is_rgb64)(const AVS_VideoInfo * p);
+
+AVSC_API(int, avs_is_yuv444p16)(const AVS_VideoInfo * p); // deprecated, use avs_is_yuv444
+AVSC_API(int, avs_is_yuv422p16)(const AVS_VideoInfo * p); // deprecated, use avs_is_yuv422
+AVSC_API(int, avs_is_yuv420p16)(const AVS_VideoInfo * p); // deprecated, use avs_is_yuv420
+AVSC_API(int, avs_is_y16)(const AVS_VideoInfo * p); // deprecated, use avs_is_y
+AVSC_API(int, avs_is_yuv444ps)(const AVS_VideoInfo * p); // deprecated, use avs_is_yuv444
+AVSC_API(int, avs_is_yuv422ps)(const AVS_VideoInfo * p); // deprecated, use avs_is_yuv422
+AVSC_API(int, avs_is_yuv420ps)(const AVS_VideoInfo * p); // deprecated, use avs_is_yuv420
+AVSC_API(int, avs_is_y32)(const AVS_VideoInfo * p); // deprecated, use avs_is_y
+
+AVSC_API(int, avs_is_444)(const AVS_VideoInfo * p);
+
+AVSC_API(int, avs_is_422)(const AVS_VideoInfo * p);
+
+AVSC_API(int, avs_is_420)(const AVS_VideoInfo * p);
+
+AVSC_API(int, avs_is_y)(const AVS_VideoInfo * p);
+
+AVSC_API(int, avs_is_yuva)(const AVS_VideoInfo * p);
+
+AVSC_API(int, avs_is_planar_rgb)(const AVS_VideoInfo * p);
+
+AVSC_API(int, avs_is_planar_rgba)(const AVS_VideoInfo * p);
+
+AVSC_API(int, avs_num_components)(const AVS_VideoInfo * p);
+
+AVSC_API(int, avs_component_size)(const AVS_VideoInfo * p);
+
+AVSC_API(int, avs_bits_per_component)(const AVS_VideoInfo * p);
+
+// end of Avisynth+ specific
+
 /////////////////////////////////////////////////////////////////////
 //
 // AVS_VideoFrame
@@ -461,7 +855,7 @@ AVSC_INLINE int avs_is_same_colorspace(AVS_VideoInfo * x, AVS_VideoInfo * y)
 // to be reused.  The instances are deleted when the corresponding AVS
 // file is closed.
 
-// AVS_VideoFrameBuffer is layed out identicly to VideoFrameBuffer
+// AVS_VideoFrameBuffer is laid out identically to VideoFrameBuffer
 // DO NOT USE THIS STRUCTURE DIRECTLY
 typedef struct AVS_VideoFrameBuffer {
   BYTE * data;
@@ -471,98 +865,153 @@ typedef struct AVS_VideoFrameBuffer {
   volatile long sequence_number;
 
   volatile long refcount;
+
+  void* device; // avs+
 } AVS_VideoFrameBuffer;
 
 // VideoFrame holds a "window" into a VideoFrameBuffer.
 
-// AVS_VideoFrame is layed out identicly to IVideoFrame
+// AVS_VideoFrame is laid out identically to IVideoFrame
 // DO NOT USE THIS STRUCTURE DIRECTLY
 typedef struct AVS_VideoFrame {
   volatile long refcount;
   AVS_VideoFrameBuffer * vfb;
-  int offset, pitch, row_size, height, offsetU, offsetV, pitchUV;  // U&V offsets are from top of picture.
-  int row_sizeUV, heightUV;
+  int offset;
+  int pitch, row_size, height;
+  int offsetU, offsetV;
+  int pitchUV;  // U&V offsets are from top of picture.
+  int row_sizeUV, heightUV; // for Planar RGB offsetU, offsetV is for the 2nd and 3rd Plane.
+                            // for Planar RGB pitchUV and row_sizeUV = 0, because when no VideoInfo (MakeWriteable)
+                            // the decision on existence of UV is checked by zero pitch
+  // AVS+ extension, avisynth.h: class does not break plugins if appended here
+  int offsetA;
+  int pitchA, row_sizeA; // 4th alpha plane support, pitch and row_size is 0 is none
+  void* properties; // frame properties
 } AVS_VideoFrame;
 
 // Access functions for AVS_VideoFrame
 AVSC_API(int, avs_get_pitch_p)(const AVS_VideoFrame * p, int plane);
 
-#ifdef AVSC_NO_DECLSPEC
-AVSC_INLINE int avs_get_pitch_p(const AVS_VideoFrame * p, int plane) {
-        switch (plane) {
-          case AVS_PLANAR_U:
-          case AVS_PLANAR_V:
-            return p->pitchUV;
-        }
-        return p->pitch;
-}
-#endif
-
-AVSC_INLINE int avs_get_pitch(const AVS_VideoFrame * p) {
-        return avs_get_pitch_p(p, 0);}
-
 AVSC_API(int, avs_get_row_size_p)(const AVS_VideoFrame * p, int plane);
 
-AVSC_INLINE int avs_get_row_size(const AVS_VideoFrame * p) {
-        return p->row_size; }
-
 AVSC_API(int, avs_get_height_p)(const AVS_VideoFrame * p, int plane);
 
-AVSC_INLINE int avs_get_height(const AVS_VideoFrame * p) {
-        return p->height;}
-
 AVSC_API(const BYTE *, avs_get_read_ptr_p)(const AVS_VideoFrame * p, int plane);
 
 #ifdef AVSC_NO_DECLSPEC
-AVSC_INLINE const BYTE* avs_get_read_ptr_p(const AVS_VideoFrame * p, int plane) {
-        switch (plane) {
-          case AVS_PLANAR_U: return p->vfb->data + p->offsetU;
-          case AVS_PLANAR_V: return p->vfb->data + p->offsetV;
-          default:           return p->vfb->data + p->offset;
-        }
+AVSC_INLINE int avs_get_pitch_p(const AVS_VideoFrame * p, int plane)
+{
+  switch (plane) {
+  case AVS_PLANAR_U: case AVS_PLANAR_V:
+    return p->pitchUV;
+  case AVS_PLANAR_A:
+    return p->pitchA;
+  }
+  return p->pitch; // Y, G, B, R
+}
+
+AVSC_INLINE int avs_get_row_size_p(const AVS_VideoFrame * p, int plane)
+{
+  switch (plane) {
+  case AVS_PLANAR_U: case AVS_PLANAR_V:
+    return (p->pitchUV) ? p->row_sizeUV : 0;
+  case AVS_PLANAR_A:
+    return (p->pitchA) ? p->row_sizeA : 0;
+  }
+  return p->row_size;
+}
+
+AVSC_INLINE int avs_get_height_p(const AVS_VideoFrame * p, int plane)
+{
+  switch (plane) {
+  case AVS_PLANAR_U: case AVS_PLANAR_V:
+    return (p->pitchUV) ? p->heightUV : 0;
+  case AVS_PLANAR_A:
+    return (p->pitchA) ? p->height : 0;
+  }
+  return p->height; // Y, G, B, R, A
 }
-#endif
 
-AVSC_INLINE const BYTE* avs_get_read_ptr(const AVS_VideoFrame * p) {
-        return avs_get_read_ptr_p(p, 0);}
+AVSC_INLINE const BYTE * avs_get_read_ptr_p(const AVS_VideoFrame * p, int plane)
+{
+  switch (plane) { // G is first. Then B,R order like U,V
+  case AVS_PLANAR_U: case AVS_PLANAR_B:
+    return p->vfb->data + p->offsetU;
+  case AVS_PLANAR_V: case AVS_PLANAR_R:
+    return p->vfb->data + p->offsetV;
+  case AVS_PLANAR_A:
+    return p->vfb->data + p->offsetA;
+  }
+  return p->vfb->data + p->offset; // Y, G
+}
+#endif
 
 AVSC_API(int, avs_is_writable)(const AVS_VideoFrame * p);
 
-AVSC_API(BYTE *, avs_get_write_ptr_p)(const AVS_VideoFrame * p, int plane);
+// V9
+AVSC_API(int, avs_is_property_writable)(const AVS_VideoFrame* p);
 
-#ifndef AVSC_NO_DECLSPEC
-AVSC_INLINE BYTE* avs_get_write_ptr(const AVS_VideoFrame * p) {
-        return avs_get_write_ptr_p(p, 0);}
-#endif
+AVSC_API(BYTE *, avs_get_write_ptr_p)(const AVS_VideoFrame * p, int plane);
 
 AVSC_API(void, avs_release_video_frame)(AVS_VideoFrame *);
 // makes a shallow copy of a video frame
 AVSC_API(AVS_VideoFrame *, avs_copy_video_frame)(AVS_VideoFrame *);
 
+// no API for these, inline helper functions
+AVSC_INLINE int avs_get_pitch(const AVS_VideoFrame * p)
+  {return avs_get_pitch_p(p, 0);}
+
+AVSC_INLINE int avs_get_row_size(const AVS_VideoFrame * p)
+  {return avs_get_row_size_p(p, 0);}
+
+AVSC_INLINE int avs_get_height(const AVS_VideoFrame * p)
+  {return avs_get_height_p(p, 0);}
+
+AVSC_INLINE const BYTE* avs_get_read_ptr(const AVS_VideoFrame * p)
+  {return avs_get_read_ptr_p(p, 0);}
+
+#ifndef AVSC_NO_DECLSPEC
+// this inline function is calling an API function
+AVSC_INLINE BYTE* avs_get_write_ptr(const AVS_VideoFrame * p)
+  {return avs_get_write_ptr_p(p, 0);}
+#endif
+
 #ifndef AVSC_NO_DECLSPEC
+// this inline function is calling an API function
 AVSC_INLINE void avs_release_frame(AVS_VideoFrame * f)
   {avs_release_video_frame(f);}
+#endif
+
+#ifndef AVSC_NO_DECLSPEC
+// this inline function is calling an API function
 AVSC_INLINE AVS_VideoFrame * avs_copy_frame(AVS_VideoFrame * f)
   {return avs_copy_video_frame(f);}
 #endif
 
+// Interface V8: frame properties
+// AVS_Map is just a placeholder for AVSMap
+typedef struct AVS_Map {
+  void* data;
+} AVS_Map;
+
+
 /////////////////////////////////////////////////////////////////////
 //
 // AVS_Value
 //
 
 // Treat AVS_Value as a fat pointer.  That is use avs_copy_value
-// and avs_release_value appropiaty as you would if AVS_Value was
+// and avs_release_value appropriately as you would if AVS_Value was
 // a pointer.
 
 // To maintain source code compatibility with future versions of the
 // avisynth_c API don't use the AVS_Value directly.  Use the helper
 // functions below.
 
-// AVS_Value is layed out identicly to AVSValue
+// AVS_Value is laid out identically to AVSValue
 typedef struct AVS_Value AVS_Value;
 struct AVS_Value {
-  short type;  // 'a'rray, 'c'lip, 'b'ool, 'i'nt, 'f'loat, 's'tring, 'v'oid, or 'l'ong
+  short type;  // 'a'rray, 'c'lip, 'b'ool, 'i'nt, 'f'loat, 's'tring, 'v'oid, or 'l'ong, or fu'n'ction
                // for some function e'rror
   short array_size;
   union {
@@ -572,18 +1021,28 @@ struct AVS_Value {
     float floating_pt;
     const char * string;
     const AVS_Value * array;
+    void * function; // not supported on C interface
+#ifdef AVS_X86_64
+    // if ever, only x64 will support. It breaks struct size on 32 bit
+    int64_t longlong; // 8 bytes
+    double double_pt; // 8 bytes
+#endif
   } d;
 };
 
-// AVS_Value should be initilized with avs_void.
+// AVS_Value should be initialized with avs_void.
 // Should also set to avs_void after the value is released
-// with avs_copy_value.  Consider it the equalvent of setting
+// with avs_copy_value.  Consider it the equivalent of setting
 // a pointer to NULL
 static const AVS_Value avs_void = {'v'};
 
 AVSC_API(void, avs_copy_value)(AVS_Value * dest, AVS_Value src);
 AVSC_API(void, avs_release_value)(AVS_Value);
+AVSC_API(AVS_Clip *, avs_take_clip)(AVS_Value, AVS_ScriptEnvironment *);
+AVSC_API(void, avs_set_to_clip)(AVS_Value *, AVS_Clip *);
 
+
+// no API for these, inline helper functions
 AVSC_INLINE int avs_defined(AVS_Value v) { return v.type != 'v'; }
 AVSC_INLINE int avs_is_clip(AVS_Value v) { return v.type == 'c'; }
 AVSC_INLINE int avs_is_bool(AVS_Value v) { return v.type == 'b'; }
@@ -593,9 +1052,6 @@ AVSC_INLINE int avs_is_string(AVS_Value v) { return v.type == 's'; }
 AVSC_INLINE int avs_is_array(AVS_Value v) { return v.type == 'a'; }
 AVSC_INLINE int avs_is_error(AVS_Value v) { return v.type == 'e'; }
 
-AVSC_API(AVS_Clip *, avs_take_clip)(AVS_Value, AVS_ScriptEnvironment *);
-AVSC_API(void, avs_set_to_clip)(AVS_Value *, AVS_Clip *);
-
 AVSC_INLINE int avs_as_bool(AVS_Value v)
         { return v.d.boolean; }
 AVSC_INLINE int avs_as_int(AVS_Value v)
@@ -622,15 +1078,17 @@ AVSC_INLINE AVS_Value avs_new_value_int(int v0)
 AVSC_INLINE AVS_Value avs_new_value_string(const char * v0)
         { AVS_Value v; v.type = 's'; v.d.string = v0; return v; }
 AVSC_INLINE AVS_Value avs_new_value_float(float v0)
-        { AVS_Value v; v.type = 'f'; v.d.floating_pt = v0; return v;}
+        { AVS_Value v; v.type = 'f'; v.d.floating_pt = v0; return v; }
 AVSC_INLINE AVS_Value avs_new_value_error(const char * v0)
         { AVS_Value v; v.type = 'e'; v.d.string = v0; return v; }
 #ifndef AVSC_NO_DECLSPEC
+// this inline function is calling an API function
 AVSC_INLINE AVS_Value avs_new_value_clip(AVS_Clip * v0)
         { AVS_Value v; avs_set_to_clip(&v, v0); return v; }
 #endif
 AVSC_INLINE AVS_Value avs_new_value_array(AVS_Value * v0, int size)
         { AVS_Value v; v.type = 'a'; v.d.array = v0; v.array_size = (short)size; return v; }
+// end of inline helper functions
 
 /////////////////////////////////////////////////////////////////////
 //
@@ -653,7 +1111,7 @@ AVSC_API(int, avs_get_parity)(AVS_Clip *, int n);
 // return field parity if field_based, else parity of first field in frame
 
 AVSC_API(int, avs_get_audio)(AVS_Clip *, void * buf,
-                             INT64 start, INT64 count);
+                             int64_t start, int64_t count);
 // start and count are in samples
 
 AVSC_API(int, avs_set_cache_hints)(AVS_Clip *,
@@ -673,7 +1131,7 @@ struct AVS_FilterInfo
   AVS_VideoFrame * (AVSC_CC * get_frame)(AVS_FilterInfo *, int n);
   int (AVSC_CC * get_parity)(AVS_FilterInfo *, int n);
   int (AVSC_CC * get_audio)(AVS_FilterInfo *, void * buf,
-                                  INT64 start, INT64 count);
+                                  int64_t start, int64_t count);
   int (AVSC_CC * set_cache_hints)(AVS_FilterInfo *, int cachehints,
                                         int frame_range);
   void (AVSC_CC * free_filter)(AVS_FilterInfo *);
@@ -687,7 +1145,7 @@ struct AVS_FilterInfo
 
 // Create a new filter
 // fi is set to point to the AVS_FilterInfo so that you can
-//   modify it once it is initilized.
+//   modify it once it is initialized.
 // store_child should generally be set to true.  If it is not
 //    set than ALL methods (the function pointers) must be defined
 // If it is set than you do not need to worry about freeing the child
@@ -718,23 +1176,38 @@ enum {
   AVS_CPUF_SSSE3      = 0x200,   //  Core 2
   AVS_CPUF_SSE4       = 0x400,   //  Penryn, Wolfdale, Yorkfield
   AVS_CPUF_SSE4_1     = 0x400,
-//AVS_CPUF_AVX        = 0x800,   //  Sandy Bridge, Bulldozer
+  AVS_CPUF_AVX        = 0x800,   //  Sandy Bridge, Bulldozer
   AVS_CPUF_SSE4_2    = 0x1000,   //  Nehalem
-//AVS_CPUF_AVX2      = 0x2000,   //  Haswell
-//AVS_CPUF_AVX512    = 0x4000,   //  Knights Landing
+  // AVS+
+  AVS_CPUF_AVX2      = 0x2000,   //  Haswell
+  AVS_CPUF_FMA3      = 0x4000,
+  AVS_CPUF_F16C      = 0x8000,
+  AVS_CPUF_MOVBE     = 0x10000,   // Big Endian Move
+  AVS_CPUF_POPCNT    = 0x20000,
+  AVS_CPUF_AES       = 0x40000,
+  AVS_CPUF_FMA4      = 0x80000,
+
+  AVS_CPUF_AVX512F    = 0x100000,  // AVX-512 Foundation.
+  AVS_CPUF_AVX512DQ   = 0x200000,  // AVX-512 DQ (Double/Quad granular) Instructions
+  AVS_CPUF_AVX512PF   = 0x400000,  // AVX-512 Prefetch
+  AVS_CPUF_AVX512ER   = 0x800000,  // AVX-512 Exponential and Reciprocal
+  AVS_CPUF_AVX512CD   = 0x1000000, // AVX-512 Conflict Detection
+  AVS_CPUF_AVX512BW   = 0x2000000, // AVX-512 BW (Byte/Word granular) Instructions
+  AVS_CPUF_AVX512VL   = 0x4000000, // AVX-512 VL (128/256 Vector Length) Extensions
+  AVS_CPUF_AVX512IFMA = 0x8000000, // AVX-512 IFMA integer 52 bit
+  AVS_CPUF_AVX512VBMI = 0x10000000 // AVX-512 VBMI
 };
 
 
 AVSC_API(const char *, avs_get_error)(AVS_ScriptEnvironment *); // return 0 if no error
 
-AVSC_API(long, avs_get_cpu_flags)(AVS_ScriptEnvironment *);
+AVSC_API(int, avs_get_cpu_flags)(AVS_ScriptEnvironment *);
 AVSC_API(int, avs_check_version)(AVS_ScriptEnvironment *, int version);
 
 AVSC_API(char *, avs_save_string)(AVS_ScriptEnvironment *, const char* s, int length);
 AVSC_API(char *, avs_sprintf)(AVS_ScriptEnvironment *, const char * fmt, ...);
 
-AVSC_API(char *, avs_vsprintf)(AVS_ScriptEnvironment *, const char * fmt, void* val);
- // note: val is really a va_list; I hope everyone typedefs va_list to a pointer
+AVSC_API(char *, avs_vsprintf)(AVS_ScriptEnvironment *, const char * fmt, va_list val);
 
 AVSC_API(int, avs_add_function)(AVS_ScriptEnvironment *,
                                 const char * name, const char * params,
@@ -756,25 +1229,33 @@ AVSC_API(int, avs_set_global_var)(AVS_ScriptEnvironment *, const char* name, con
 //void avs_push_context(AVS_ScriptEnvironment *, int level=0);
 //void avs_pop_context(AVS_ScriptEnvironment *);
 
+// partially deprecated, from V8 use avs_new_video_frame_p_a (frame property copy)
 AVSC_API(AVS_VideoFrame *, avs_new_video_frame_a)(AVS_ScriptEnvironment *,
                                           const AVS_VideoInfo * vi, int align);
-// align should be at least 16
+// align should be at least 16 for classic Avisynth
+// Avisynth+: any value, Avs+ ensures a minimum alignment if too small align is provided
 
+// no API for these, inline helper functions
 #ifndef AVSC_NO_DECLSPEC
-AVSC_INLINE
-AVS_VideoFrame * avs_new_video_frame(AVS_ScriptEnvironment * env,
+// partially deprecated, from V8 use avs_new_video_frame_p (frame property copy)
+// this inline function is calling an API function
+AVSC_INLINE AVS_VideoFrame * avs_new_video_frame(AVS_ScriptEnvironment * env,
                                      const AVS_VideoInfo * vi)
   {return avs_new_video_frame_a(env,vi,AVS_FRAME_ALIGN);}
 
-AVSC_INLINE
-AVS_VideoFrame * avs_new_frame(AVS_ScriptEnvironment * env,
+// an older compatibility alias
+// this inline function is calling an API function
+AVSC_INLINE AVS_VideoFrame * avs_new_frame(AVS_ScriptEnvironment * env,
                                const AVS_VideoInfo * vi)
   {return avs_new_video_frame_a(env,vi,AVS_FRAME_ALIGN);}
 #endif
-
+// end of inline helper functions
 
 AVSC_API(int, avs_make_writable)(AVS_ScriptEnvironment *, AVS_VideoFrame * * pvf);
 
+// V9
+AVSC_API(int, avs_make_property_writable)(AVS_ScriptEnvironment*, AVS_VideoFrame** pvf);
+
 AVSC_API(void, avs_bit_blt)(AVS_ScriptEnvironment *, BYTE* dstp, int dst_pitch, const BYTE* srcp, int src_pitch, int row_size, int height);
 
 typedef void (AVSC_CC *AVS_ShutdownFunc)(void* user_data, AVS_ScriptEnvironment * env);
@@ -782,6 +1263,9 @@ AVSC_API(void, avs_at_exit)(AVS_ScriptEnvironment *, AVS_ShutdownFunc function,
 
 AVSC_API(AVS_VideoFrame *, avs_subframe)(AVS_ScriptEnvironment *, AVS_VideoFrame * src, int rel_offset, int new_pitch, int new_row_size, int new_height);
 // The returned video frame must be be released
+AVSC_API(AVS_VideoFrame*, avs_subframe_planar)(AVS_ScriptEnvironment*, AVS_VideoFrame* src, int rel_offset, int new_pitch, int new_row_size, int new_height, int rel_offsetU, int rel_offsetV, int new_pitchUV);
+// The returned video frame must be be released
+// see also avs_subframe_planar_a in interface V8
 
 AVSC_API(int, avs_set_memory_max)(AVS_ScriptEnvironment *, int mem);
 
@@ -799,19 +1283,93 @@ const char * AVSC_CC avisynth_c_plugin_init(AVS_ScriptEnvironment* env);
 
 AVSC_API(void, avs_delete_script_environment)(AVS_ScriptEnvironment *);
 
+///////////////////////////////////////////////////////////////////////////////
+//
+// Avisynth+ V8 interface elements
+//
 
-AVSC_API(AVS_VideoFrame *, avs_subframe_planar)(AVS_ScriptEnvironment *, AVS_VideoFrame * src, int rel_offset, int new_pitch, int new_row_size, int new_height, int rel_offsetU, int rel_offsetV, int new_pitchUV);
+AVSC_API(AVS_VideoFrame*, avs_subframe_planar_a)(AVS_ScriptEnvironment*, AVS_VideoFrame* src, int rel_offset, int new_pitch, int new_row_size, int new_height, int rel_offsetU, int rel_offsetV, int new_pitchUV, int rel_offsetA);
 // The returned video frame must be be released
 
+AVSC_API(void, avs_copy_frame_props)(AVS_ScriptEnvironment* p, const AVS_VideoFrame* src, AVS_VideoFrame* dst);
+AVSC_API(const AVS_Map*, avs_get_frame_props_ro)(AVS_ScriptEnvironment* p, const AVS_VideoFrame* frame);
+AVSC_API(AVS_Map*, avs_get_frame_props_rw)(AVS_ScriptEnvironment* p, AVS_VideoFrame* frame);
+AVSC_API(int, avs_prop_num_keys)(AVS_ScriptEnvironment* p, const AVS_Map* map);
+AVSC_API(const char*, avs_prop_get_key)(AVS_ScriptEnvironment* p, const AVS_Map* map, int index);
+AVSC_API(int, avs_prop_num_elements)(AVS_ScriptEnvironment* p, const AVS_Map* map, const char* key);
+
+// see AVS_PROPTYPE_... enums
+AVSC_API(char, avs_prop_get_type)(AVS_ScriptEnvironment* p, const AVS_Map* map, const char* key);
+
+// see AVS_GETPROPERROR_... enums
+AVSC_API(int64_t, avs_prop_get_int)(AVS_ScriptEnvironment* p, const AVS_Map* map, const char* key, int index, int* error);
+AVSC_API(double, avs_prop_get_float)(AVS_ScriptEnvironment* p, const AVS_Map* map, const char* key, int index, int* error);
+AVSC_API(const char*, avs_prop_get_data)(AVS_ScriptEnvironment* p, const AVS_Map* map, const char* key, int index, int* error);
+AVSC_API(int, avs_prop_get_data_size)(AVS_ScriptEnvironment* p, const AVS_Map* map, const char* key, int index, int* error);
+AVSC_API(AVS_Clip*, avs_prop_get_clip)(AVS_ScriptEnvironment* p, const AVS_Map* map, const char* key, int index, int* error);
+AVSC_API(const AVS_VideoFrame*, avs_prop_get_frame)(AVS_ScriptEnvironment* p, const AVS_Map* map, const char* key, int index, int* error);
+
+AVSC_API(int, avs_prop_delete_key)(AVS_ScriptEnvironment* p, AVS_Map* map, const char* key);
+
+// see AVS_PROPAPPENDMODE_... enums
+AVSC_API(int, avs_prop_set_int)(AVS_ScriptEnvironment* p, AVS_Map* map, const char* key, int64_t i, int append);
+AVSC_API(int, avs_prop_set_float)(AVS_ScriptEnvironment* p, AVS_Map* map, const char* key, double d, int append);
+AVSC_API(int, avs_prop_set_data)(AVS_ScriptEnvironment* p, AVS_Map* map, const char* key, const char* d, int length, int append);
+AVSC_API(int, avs_prop_set_clip)(AVS_ScriptEnvironment* p, AVS_Map* map, const char* key, AVS_Clip* clip, int append);
+AVSC_API(int, avs_prop_set_frame)(AVS_ScriptEnvironment* p, AVS_Map* map, const char* key, const AVS_VideoFrame* frame, int append);
+
+AVSC_API(const int64_t*, avs_prop_get_int_array)(AVS_ScriptEnvironment* p, const AVS_Map* map, const char* key, int* error);
+AVSC_API(const double*, avs_prop_get_float_array)(AVS_ScriptEnvironment* p, const AVS_Map* map, const char* key, int* error);
+AVSC_API(int, avs_prop_set_int_array)(AVS_ScriptEnvironment* p, AVS_Map* map, const char* key, const int64_t* i, int size);
+AVSC_API(int, avs_prop_set_float_array)(AVS_ScriptEnvironment* p, AVS_Map* map, const char* key, const double* d, int size);
+
+AVSC_API(void, avs_clear_map)(AVS_ScriptEnvironment* p, AVS_Map* map);
+
+// with frame property source
+AVSC_API(AVS_VideoFrame*, avs_new_video_frame_p)(AVS_ScriptEnvironment*,
+  const AVS_VideoInfo* vi, AVS_VideoFrame* propSrc);
+
+// with frame property source
+AVSC_API(AVS_VideoFrame*, avs_new_video_frame_p_a)(AVS_ScriptEnvironment*,
+  const AVS_VideoInfo* vi, AVS_VideoFrame* propSrc, int align);
+
+// Generic query to ask for various system properties, see AVS_AEP_xxx enums
+AVSC_API(size_t, avs_get_env_property)(AVS_ScriptEnvironment*, int avs_aep_prop);
+
+// buffer pool, see AVS_ALLOCTYPE enums
+AVSC_API(void *, avs_pool_allocate)(AVS_ScriptEnvironment*, size_t nBytes, size_t alignment, int avs_alloc_type);
+AVSC_API(void, avs_pool_free)(AVS_ScriptEnvironment*, void *ptr);
+
+// Interface V8
+// Returns TRUE (1) and the requested variable. If the method fails, returns 0 (FALSE) and does not touch 'val'.
+// The returned AVS_Value *val value must be be released with avs_release_value only on success
+// AVS_Value *val is not caller allocated
+AVSC_API(int, avs_get_var_try)(AVS_ScriptEnvironment*, const char* name, AVS_Value* val);
+
+// Interface V8
+// Return the value of the requested variable.
+// If the variable was not found or had the wrong type,
+// return the supplied default value.
+AVSC_API(int, avs_get_var_bool)(AVS_ScriptEnvironment*, const char* name, int def);
+AVSC_API(int, avs_get_var_int)(AVS_ScriptEnvironment*, const char* name, int def);
+AVSC_API(double, avs_get_var_double)(AVS_ScriptEnvironment*, const char* name, double def);
+AVSC_API(const char*, avs_get_var_string)(AVS_ScriptEnvironment*, const char* name, const char* def);
+AVSC_API(int64_t, avs_get_var_long)(AVS_ScriptEnvironment*, const char* name, int64_t def);
+
+#if defined(AVS_WINDOWS)
+// The following stuff is only relevant for Windows DLL handling; Linux does it completely differently.
 #ifdef AVSC_NO_DECLSPEC
-// use LoadLibrary and related functions to dynamically load Avisynth instead of declspec(dllimport)
+// This part uses LoadLibrary and related functions to dynamically load Avisynth instead of declspec(dllimport)
+// When AVSC_NO_DECLSPEC is defined, you can use avs_load_library to populate API functions into a struct
+// AVSC_INLINE functions which call onto an API functions should be treated specially (todo)
+
 /*
   The following functions needs to have been declared, probably from windows.h
 
   void* malloc(size_t)
   void free(void*);
 
-  HMODULE LoadLibrary(const char*);
+  HMODULE LoadLibraryA(const char*);
   void* GetProcAddress(HMODULE, const char*);
   FreeLibrary(HMODULE);
 */
@@ -821,6 +1379,14 @@ typedef struct AVS_Library AVS_Library;
 
 #define AVSC_DECLARE_FUNC(name) name##_func name
 
+// AVSC_DECLARE_FUNC helps keeping naming convention: type is xxxxx_func, function name is xxxxx
+// e.g. "AVSC_DECLARE_FUNC(avs_add_function);"
+// is a shortcut for "avs_add_function_func avs_add_function;"
+
+// Note: AVSC_INLINE functions which call into API,
+// are guarded by #ifndef AVSC_NO_DECLSPEC
+// They should call the appropriate library-> API entry
+
 struct AVS_Library {
   HMODULE handle;
 
@@ -874,7 +1440,7 @@ struct AVS_Library {
   AVSC_DECLARE_FUNC(avs_get_plane_height_subsampling);
   AVSC_DECLARE_FUNC(avs_bits_per_pixel);
   AVSC_DECLARE_FUNC(avs_bytes_from_pixels);
-  AVSC_DECLARE_FUNC(avs_row_size_p);
+  AVSC_DECLARE_FUNC(avs_row_size);
   AVSC_DECLARE_FUNC(avs_bmp_size);
   AVSC_DECLARE_FUNC(avs_get_pitch_p);
   AVSC_DECLARE_FUNC(avs_get_row_size_p);
@@ -882,16 +1448,133 @@ struct AVS_Library {
   AVSC_DECLARE_FUNC(avs_get_read_ptr_p);
   AVSC_DECLARE_FUNC(avs_is_writable);
   AVSC_DECLARE_FUNC(avs_get_write_ptr_p);
+
+  // Avisynth+ specific
+  // Note: these functions are simulated/use fallback to existing functions
+  AVSC_DECLARE_FUNC(avs_is_rgb48);
+  AVSC_DECLARE_FUNC(avs_is_rgb64);
+  AVSC_DECLARE_FUNC(avs_is_yuv444p16);
+  AVSC_DECLARE_FUNC(avs_is_yuv422p16);
+  AVSC_DECLARE_FUNC(avs_is_yuv420p16);
+  AVSC_DECLARE_FUNC(avs_is_y16);
+  AVSC_DECLARE_FUNC(avs_is_yuv444ps);
+  AVSC_DECLARE_FUNC(avs_is_yuv422ps);
+  AVSC_DECLARE_FUNC(avs_is_yuv420ps);
+  AVSC_DECLARE_FUNC(avs_is_y32);
+  AVSC_DECLARE_FUNC(avs_is_444);
+  AVSC_DECLARE_FUNC(avs_is_422);
+  AVSC_DECLARE_FUNC(avs_is_420);
+  AVSC_DECLARE_FUNC(avs_is_y);
+  AVSC_DECLARE_FUNC(avs_is_yuva);
+  AVSC_DECLARE_FUNC(avs_is_planar_rgb);
+  AVSC_DECLARE_FUNC(avs_is_planar_rgba);
+  AVSC_DECLARE_FUNC(avs_num_components);
+  AVSC_DECLARE_FUNC(avs_component_size);
+  AVSC_DECLARE_FUNC(avs_bits_per_component);
+
+  ///////////////////////////////////////////////////////////////////////////////
+  // Avisynth+ new interface elements from interface version 8
+  // avs_subframe_planar with alpha support
+  AVSC_DECLARE_FUNC(avs_subframe_planar_a);
+
+  // frame properties
+  AVSC_DECLARE_FUNC(avs_copy_frame_props);
+  AVSC_DECLARE_FUNC(avs_get_frame_props_ro);
+  AVSC_DECLARE_FUNC(avs_get_frame_props_rw);
+  AVSC_DECLARE_FUNC(avs_prop_num_keys);
+  AVSC_DECLARE_FUNC(avs_prop_get_key);
+  AVSC_DECLARE_FUNC(avs_prop_num_elements);
+  AVSC_DECLARE_FUNC(avs_prop_get_type);
+  AVSC_DECLARE_FUNC(avs_prop_get_int);
+  AVSC_DECLARE_FUNC(avs_prop_get_float);
+  AVSC_DECLARE_FUNC(avs_prop_get_data);
+  AVSC_DECLARE_FUNC(avs_prop_get_data_size);
+  AVSC_DECLARE_FUNC(avs_prop_get_clip);
+  AVSC_DECLARE_FUNC(avs_prop_get_frame);
+  AVSC_DECLARE_FUNC(avs_prop_delete_key);
+  AVSC_DECLARE_FUNC(avs_prop_set_int);
+  AVSC_DECLARE_FUNC(avs_prop_set_float);
+  AVSC_DECLARE_FUNC(avs_prop_set_data);
+  AVSC_DECLARE_FUNC(avs_prop_set_clip);
+  AVSC_DECLARE_FUNC(avs_prop_set_frame);
+
+  AVSC_DECLARE_FUNC(avs_prop_get_int_array);
+  AVSC_DECLARE_FUNC(avs_prop_get_float_array);
+  AVSC_DECLARE_FUNC(avs_prop_set_int_array);
+  AVSC_DECLARE_FUNC(avs_prop_set_float_array);
+
+  AVSC_DECLARE_FUNC(avs_clear_map);
+
+  // NewVideoFrame with frame properties
+  AVSC_DECLARE_FUNC(avs_new_video_frame_p);
+  AVSC_DECLARE_FUNC(avs_new_video_frame_p_a);
+
+  AVSC_DECLARE_FUNC(avs_get_env_property);
+
+  AVSC_DECLARE_FUNC(avs_get_var_try);
+  AVSC_DECLARE_FUNC(avs_get_var_bool);
+  AVSC_DECLARE_FUNC(avs_get_var_int);
+  AVSC_DECLARE_FUNC(avs_get_var_double);
+  AVSC_DECLARE_FUNC(avs_get_var_string);
+  AVSC_DECLARE_FUNC(avs_get_var_long);
+
+  AVSC_DECLARE_FUNC(avs_pool_allocate);
+  AVSC_DECLARE_FUNC(avs_pool_free);
+
+  // V9
+  AVSC_DECLARE_FUNC(avs_is_property_writable);
+  AVSC_DECLARE_FUNC(avs_make_property_writable);
 };
 
 #undef AVSC_DECLARE_FUNC
 
+#ifdef AVS26_FALLBACK_SIMULATION
+// Helper functions for fallback simulation
+// Avisynth+ extensions do not exist in classic Avisynth so they are simulated
+AVSC_INLINE int avs_is_xx_fallback_return_false(const AVS_VideoInfo * p)
+{
+  return 0;
+}
+
+// Avisynth+ extensions do not exist in classic Avisynth so they are simulated
+AVSC_INLINE int avs_num_components_fallback(const AVS_VideoInfo * p)
+{
+  switch (p->pixel_type) {
+  case AVS_CS_UNKNOWN:
+    return 0;
+  case AVS_CS_RAW32:
+  case AVS_CS_Y8:
+    return 1;
+  case AVS_CS_BGR32:
+    return 4; // not planar but return the count
+  default:
+    return 3;
+  }
+}
+
+// Avisynth+ extensions do not exist in classic Avisynth so they are simulated
+AVSC_INLINE int avs_component_size_fallback(const AVS_VideoInfo * p)
+{
+  return 1;
+}
+
+// Avisynth+ extensions do not exist in classic Avisynth so they are simulated
+AVSC_INLINE int avs_bits_per_component_fallback(const AVS_VideoInfo * p)
+{
+  return 8;
+}
+// End of helper functions for fallback simulation
+#endif // AVS26_FALLBACK_SIMULATION
+
+// avs_load_library() allocates an array for API procedure entries
+// reads and fills the entries with live procedure addresses.
+// AVSC_INLINE helpers which are calling into API procedures are not treated here (todo)
 
 AVSC_INLINE AVS_Library * avs_load_library() {
   AVS_Library *library = (AVS_Library *)malloc(sizeof(AVS_Library));
   if (library == NULL)
     return NULL;
-  library->handle = LoadLibrary("avisynth");
+  library->handle = LoadLibraryA("avisynth");
   if (library->handle == NULL)
     goto fail;
 
@@ -903,6 +1586,44 @@ AVSC_INLINE AVS_Library * avs_load_library() {
     goto fail;\
 }
 
+#ifdef AVS26_FALLBACK_SIMULATION
+// When an API function is not loadable, let's try a replacement
+// Missing Avisynth+ functions will be substituted with classic Avisynth compatible methods
+/*
+Avisynth+                 When method is missing (classic Avisynth)
+avs_is_rgb48              constant false
+avs_is_rgb64              constant false
+avs_is_444                avs_is_yv24
+avs_is_422                avs_is_yv16
+avs_is_420                avs_is_yv12
+avs_is_y                  avs_is_y8
+avs_is_yuva               constant false
+avs_is_planar_rgb         constant false
+avs_is_planar_rgba        constant false
+avs_num_components        special: avs_num_components_fake Y8:1 RGB32:4 else 3
+avs_component_size        constant 1 (1 bytes/component)
+avs_bits_per_component    constant 8 (8 bits/component)
+*/
+
+  // try to load an alternative function
+#define AVSC_LOAD_FUNC_FALLBACK(name,name2) {\
+  library->name = (name##_func) GetProcAddress(library->handle, AVSC_STRINGIFY(name));\
+  if (library->name == NULL)\
+    library->name = (name##_func) GetProcAddress(library->handle, AVSC_STRINGIFY(name2));\
+  if (library->name == NULL)\
+    goto fail;\
+}
+
+  // try to assign a replacement function
+#define AVSC_LOAD_FUNC_FALLBACK_SIMULATED(name,name2) {\
+  library->name = (name##_func) GetProcAddress(library->handle, AVSC_STRINGIFY(name));\
+  if (library->name == NULL)\
+    library->name = name2;\
+  if (library->name == NULL)\
+    goto fail;\
+}
+#endif // AVS26_FALLBACK_SIMULATION
+
   AVSC_LOAD_FUNC(avs_add_function);
   AVSC_LOAD_FUNC(avs_at_exit);
   AVSC_LOAD_FUNC(avs_bit_blt);
@@ -925,6 +1646,9 @@ AVSC_INLINE AVS_Library * avs_load_library() {
   AVSC_LOAD_FUNC(avs_make_writable);
   AVSC_LOAD_FUNC(avs_new_c_filter);
   AVSC_LOAD_FUNC(avs_new_video_frame_a);
+
+
+
   AVSC_LOAD_FUNC(avs_release_clip);
   AVSC_LOAD_FUNC(avs_release_value);
   AVSC_LOAD_FUNC(avs_release_video_frame);
@@ -953,7 +1677,7 @@ AVSC_INLINE AVS_Library * avs_load_library() {
   AVSC_LOAD_FUNC(avs_get_plane_height_subsampling);
   AVSC_LOAD_FUNC(avs_bits_per_pixel);
   AVSC_LOAD_FUNC(avs_bytes_from_pixels);
-  AVSC_LOAD_FUNC(avs_row_size_p);
+  AVSC_LOAD_FUNC(avs_row_size);
   AVSC_LOAD_FUNC(avs_bmp_size);
   AVSC_LOAD_FUNC(avs_get_pitch_p);
   AVSC_LOAD_FUNC(avs_get_row_size_p);
@@ -962,9 +1686,87 @@ AVSC_INLINE AVS_Library * avs_load_library() {
   AVSC_LOAD_FUNC(avs_is_writable);
   AVSC_LOAD_FUNC(avs_get_write_ptr_p);
 
+  // Avisynth+ specific
+#ifdef AVS26_FALLBACK_SIMULATION
+  // replace with fallback fn when does not exist
+  AVSC_LOAD_FUNC_FALLBACK_SIMULATED(avs_is_rgb48, avs_is_xx_fallback_return_false);
+  AVSC_LOAD_FUNC_FALLBACK_SIMULATED(avs_is_rgb64, avs_is_xx_fallback_return_false);
+  AVSC_LOAD_FUNC_FALLBACK(avs_is_444, avs_is_yv24);
+  AVSC_LOAD_FUNC_FALLBACK(avs_is_422, avs_is_yv16);
+  AVSC_LOAD_FUNC_FALLBACK(avs_is_420, avs_is_yv12);
+  AVSC_LOAD_FUNC_FALLBACK(avs_is_y, avs_is_y8);
+  AVSC_LOAD_FUNC_FALLBACK_SIMULATED(avs_is_yuva, avs_is_xx_fallback_return_false);
+  AVSC_LOAD_FUNC_FALLBACK_SIMULATED(avs_is_planar_rgb, avs_is_xx_fallback_return_false);
+  AVSC_LOAD_FUNC_FALLBACK_SIMULATED(avs_is_planar_rgba, avs_is_xx_fallback_return_false);
+  AVSC_LOAD_FUNC_FALLBACK_SIMULATED(avs_num_components, avs_num_components_fallback);
+  AVSC_LOAD_FUNC_FALLBACK_SIMULATED(avs_component_size, avs_component_size_fallback);
+  AVSC_LOAD_FUNC_FALLBACK_SIMULATED(avs_bits_per_component, avs_bits_per_component_fallback);
+#else
+  // Avisynth+ specific
+  AVSC_LOAD_FUNC(avs_is_rgb48);
+  AVSC_LOAD_FUNC(avs_is_rgb64);
+  AVSC_LOAD_FUNC(avs_is_444);
+  AVSC_LOAD_FUNC(avs_is_422);
+  AVSC_LOAD_FUNC(avs_is_420);
+  AVSC_LOAD_FUNC(avs_is_y);
+  AVSC_LOAD_FUNC(avs_is_yuva);
+  AVSC_LOAD_FUNC(avs_is_planar_rgb);
+  AVSC_LOAD_FUNC(avs_is_planar_rgba);
+  AVSC_LOAD_FUNC(avs_num_components);
+  AVSC_LOAD_FUNC(avs_component_size);
+  AVSC_LOAD_FUNC(avs_bits_per_component);
+#endif
+  // Avisynth+ interface V8, no backward compatible simulation
+  AVSC_LOAD_FUNC(avs_subframe_planar_a);
+  // frame properties
+  AVSC_LOAD_FUNC(avs_copy_frame_props);
+  AVSC_LOAD_FUNC(avs_get_frame_props_ro);
+  AVSC_LOAD_FUNC(avs_get_frame_props_rw);
+  AVSC_LOAD_FUNC(avs_prop_num_keys);
+  AVSC_LOAD_FUNC(avs_prop_get_key);
+  AVSC_LOAD_FUNC(avs_prop_num_elements);
+  AVSC_LOAD_FUNC(avs_prop_get_type);
+  AVSC_LOAD_FUNC(avs_prop_get_int);
+  AVSC_LOAD_FUNC(avs_prop_get_float);
+  AVSC_LOAD_FUNC(avs_prop_get_data);
+  AVSC_LOAD_FUNC(avs_prop_get_data_size);
+  AVSC_LOAD_FUNC(avs_prop_get_clip);
+  AVSC_LOAD_FUNC(avs_prop_get_frame);
+  AVSC_LOAD_FUNC(avs_prop_delete_key);
+  AVSC_LOAD_FUNC(avs_prop_set_int);
+  AVSC_LOAD_FUNC(avs_prop_set_float);
+  AVSC_LOAD_FUNC(avs_prop_set_data);
+  AVSC_LOAD_FUNC(avs_prop_set_clip);
+  AVSC_LOAD_FUNC(avs_prop_set_frame);
+
+  AVSC_LOAD_FUNC(avs_prop_get_int_array);
+  AVSC_LOAD_FUNC(avs_prop_get_float_array);
+  AVSC_LOAD_FUNC(avs_prop_set_int_array);
+  AVSC_LOAD_FUNC(avs_prop_set_float_array);
+
+  AVSC_LOAD_FUNC(avs_clear_map);
+
+  // NewVideoFrame with frame properties
+  AVSC_LOAD_FUNC(avs_new_video_frame_p);
+  AVSC_LOAD_FUNC(avs_new_video_frame_p_a);
+
+  AVSC_LOAD_FUNC(avs_get_env_property);
+
+  AVSC_LOAD_FUNC(avs_get_var_try);
+  AVSC_LOAD_FUNC(avs_get_var_bool);
+  AVSC_LOAD_FUNC(avs_get_var_int);
+  AVSC_LOAD_FUNC(avs_get_var_double);
+  AVSC_LOAD_FUNC(avs_get_var_string);
+  AVSC_LOAD_FUNC(avs_get_var_long);
+
+  AVSC_LOAD_FUNC(avs_pool_allocate);
+  AVSC_LOAD_FUNC(avs_pool_free);
+
 #undef __AVSC_STRINGIFY
 #undef AVSC_STRINGIFY
 #undef AVSC_LOAD_FUNC
+#undef AVSC_LOAD_FUNC_FALLBACK
+#undef AVSC_LOAD_FUNC_FALLBACK_SIMULATED
 
   return library;
 
@@ -981,4 +1783,6 @@ AVSC_INLINE void avs_free_library(AVS_Library *library) {
 }
 #endif
 
+#endif // AVS_WINDOWS
+
 #endif


=====================================
extras/avxsynth_c.h deleted
=====================================
@@ -1,725 +0,0 @@
-// Avisynth C Interface Version 0.20
-// Copyright 2003 Kevin Atkinson
-
-// This program is free software; you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation; either version 2 of the License, or
-// (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA, or visit
-// http://www.gnu.org/copyleft/gpl.html .
-//
-// As a special exception, I give you permission to link to the
-// Avisynth C interface with independent modules that communicate with
-// the Avisynth C interface solely through the interfaces defined in
-// avisynth_c.h, regardless of the license terms of these independent
-// modules, and to copy and distribute the resulting combined work
-// under terms of your choice, provided that every copy of the
-// combined work is accompanied by a complete copy of the source code
-// of the Avisynth C interface and Avisynth itself (with the version
-// used to produce the combined work), being distributed under the
-// terms of the GNU General Public License plus this exception.  An
-// independent module is a module which is not derived from or based
-// on Avisynth C Interface, such as 3rd-party filters, import and
-// export plugins, or graphical user interfaces.
-
-#ifndef __AVXSYNTH_C__
-#define __AVXSYNTH_C__
-  
-#include <stdarg.h>
-#include <stdint.h>
-
-typedef int64_t INT64;
-#define __stdcall
-#define __declspec(x)
-
-#ifdef __cplusplus
-#  define EXTERN_C extern "C"
-#else
-#  define EXTERN_C
-#endif
-
-#define AVSC_USE_STDCALL 1
-
-#ifndef AVSC_USE_STDCALL
-#  define AVSC_CC __cdecl
-#else
-#  define AVSC_CC __stdcall
-#endif
-
-#define AVSC_INLINE static __inline
-
-#ifdef AVISYNTH_C_EXPORTS
-#  define AVSC_EXPORT EXTERN_C
-#  define AVSC_API(ret, name) EXTERN_C __declspec(dllexport) ret AVSC_CC name
-#else
-#  define AVSC_EXPORT EXTERN_C __declspec(dllexport)
-#  ifndef AVSC_NO_DECLSPEC
-#    define AVSC_API(ret, name) EXTERN_C __declspec(dllimport) ret AVSC_CC name
-#  else
-#    define AVSC_API(ret, name) typedef ret (AVSC_CC *name##_func)
-#  endif
-#endif
-
-
-/////////////////////////////////////////////////////////////////////
-//
-// Constants
-//
-
-#ifndef __AVXSYNTH_H__
-enum { AVISYNTH_INTERFACE_VERSION = 3 };
-#endif
-
-enum {AVS_SAMPLE_INT8  = 1<<0,
-      AVS_SAMPLE_INT16 = 1<<1, 
-      AVS_SAMPLE_INT24 = 1<<2,
-      AVS_SAMPLE_INT32 = 1<<3,
-      AVS_SAMPLE_FLOAT = 1<<4};
-
-enum {AVS_PLANAR_Y=1<<0,
-      AVS_PLANAR_U=1<<1,
-      AVS_PLANAR_V=1<<2,
-      AVS_PLANAR_ALIGNED=1<<3,
-      AVS_PLANAR_Y_ALIGNED=AVS_PLANAR_Y|AVS_PLANAR_ALIGNED,
-      AVS_PLANAR_U_ALIGNED=AVS_PLANAR_U|AVS_PLANAR_ALIGNED,
-      AVS_PLANAR_V_ALIGNED=AVS_PLANAR_V|AVS_PLANAR_ALIGNED};
-
-  // Colorspace properties.
-enum {AVS_CS_BGR = 1<<28,  
-      AVS_CS_YUV = 1<<29,
-      AVS_CS_INTERLEAVED = 1<<30,
-      AVS_CS_PLANAR = 1<<31};
-
-  // Specific colorformats
-enum {
-  AVS_CS_UNKNOWN = 0,
-  AVS_CS_BGR24 = 1<<0 | AVS_CS_BGR | AVS_CS_INTERLEAVED,
-  AVS_CS_BGR32 = 1<<1 | AVS_CS_BGR | AVS_CS_INTERLEAVED,
-  AVS_CS_YUY2 = 1<<2 | AVS_CS_YUV | AVS_CS_INTERLEAVED,
-  AVS_CS_YV12 = 1<<3 | AVS_CS_YUV | AVS_CS_PLANAR,  // y-v-u, planar
-  AVS_CS_I420 = 1<<4 | AVS_CS_YUV | AVS_CS_PLANAR,  // y-u-v, planar
-  AVS_CS_IYUV = 1<<4 | AVS_CS_YUV | AVS_CS_PLANAR  // same as above
-};
-
-enum {
-  AVS_IT_BFF = 1<<0,
-  AVS_IT_TFF = 1<<1,
-  AVS_IT_FIELDBASED = 1<<2};
-
-enum {
-  AVS_FILTER_TYPE=1,
-  AVS_FILTER_INPUT_COLORSPACE=2,
-  AVS_FILTER_OUTPUT_TYPE=9,
-  AVS_FILTER_NAME=4,
-  AVS_FILTER_AUTHOR=5,
-  AVS_FILTER_VERSION=6,
-  AVS_FILTER_ARGS=7,
-  AVS_FILTER_ARGS_INFO=8,
-  AVS_FILTER_ARGS_DESCRIPTION=10,
-  AVS_FILTER_DESCRIPTION=11};
-
-enum {  //SUBTYPES
-  AVS_FILTER_TYPE_AUDIO=1,
-  AVS_FILTER_TYPE_VIDEO=2,
-  AVS_FILTER_OUTPUT_TYPE_SAME=3,
-  AVS_FILTER_OUTPUT_TYPE_DIFFERENT=4};
-
-enum {
-  AVS_CACHE_NOTHING=0,
-  AVS_CACHE_RANGE=1,
-  AVS_CACHE_ALL=2,
-  AVS_CACHE_AUDIO=3,
-  AVS_CACHE_AUDIO_NONE=4,
-  AVS_CACHE_AUDIO_AUTO=5
-};
-
-#define AVS_FRAME_ALIGN 16 
-
-typedef struct AVS_Clip AVS_Clip;
-typedef struct AVS_ScriptEnvironment AVS_ScriptEnvironment;
-
-/////////////////////////////////////////////////////////////////////
-//
-// AVS_VideoInfo
-//
-
-// AVS_VideoInfo is layed out identicly to VideoInfo
-typedef struct AVS_VideoInfo {
-  int width, height;    // width=0 means no video
-  unsigned fps_numerator, fps_denominator;
-  int num_frames;
-
-  int pixel_type;
-  
-  int audio_samples_per_second;   // 0 means no audio
-  int sample_type;
-  INT64 num_audio_samples;
-  int nchannels;
-
-  // Imagetype properties
-
-  int image_type;
-} AVS_VideoInfo;
-
-// useful functions of the above
-AVSC_INLINE int avs_has_video(const AVS_VideoInfo * p) 
-        { return (p->width!=0); }
-
-AVSC_INLINE int avs_has_audio(const AVS_VideoInfo * p) 
-        { return (p->audio_samples_per_second!=0); }
-
-AVSC_INLINE int avs_is_rgb(const AVS_VideoInfo * p) 
-        { return !!(p->pixel_type&AVS_CS_BGR); }
-
-AVSC_INLINE int avs_is_rgb24(const AVS_VideoInfo * p) 
-        { return (p->pixel_type&AVS_CS_BGR24)==AVS_CS_BGR24; } // Clear out additional properties
-
-AVSC_INLINE int avs_is_rgb32(const AVS_VideoInfo * p) 
-        { return (p->pixel_type & AVS_CS_BGR32) == AVS_CS_BGR32 ; }
-
-AVSC_INLINE int avs_is_yuv(const AVS_VideoInfo * p) 
-        { return !!(p->pixel_type&AVS_CS_YUV ); }
-
-AVSC_INLINE int avs_is_yuy2(const AVS_VideoInfo * p) 
-        { return (p->pixel_type & AVS_CS_YUY2) == AVS_CS_YUY2; }  
-
-AVSC_INLINE int avs_is_yv12(const AVS_VideoInfo * p) 
-        { return ((p->pixel_type & AVS_CS_YV12) == AVS_CS_YV12)||((p->pixel_type & AVS_CS_I420) == AVS_CS_I420); }
-
-AVSC_INLINE int avs_is_color_space(const AVS_VideoInfo * p, int c_space) 
-        { return ((p->pixel_type & c_space) == c_space); }
-
-AVSC_INLINE int avs_is_property(const AVS_VideoInfo * p, int property) 
-        { return ((p->pixel_type & property)==property ); }
-
-AVSC_INLINE int avs_is_planar(const AVS_VideoInfo * p) 
-        { return !!(p->pixel_type & AVS_CS_PLANAR); }
-        
-AVSC_INLINE int avs_is_field_based(const AVS_VideoInfo * p) 
-        { return !!(p->image_type & AVS_IT_FIELDBASED); }
-
-AVSC_INLINE int avs_is_parity_known(const AVS_VideoInfo * p) 
-        { return ((p->image_type & AVS_IT_FIELDBASED)&&(p->image_type & (AVS_IT_BFF | AVS_IT_TFF))); }
-
-AVSC_INLINE int avs_is_bff(const AVS_VideoInfo * p) 
-        { return !!(p->image_type & AVS_IT_BFF); }
-
-AVSC_INLINE int avs_is_tff(const AVS_VideoInfo * p) 
-        { return !!(p->image_type & AVS_IT_TFF); }
-
-AVSC_INLINE int avs_bits_per_pixel(const AVS_VideoInfo * p) 
-{ 
-  switch (p->pixel_type) {
-      case AVS_CS_BGR24: return 24;
-      case AVS_CS_BGR32: return 32;
-      case AVS_CS_YUY2:  return 16;
-      case AVS_CS_YV12:
-      case AVS_CS_I420:  return 12;
-      default:           return 0;
-    }
-}
-AVSC_INLINE int avs_bytes_from_pixels(const AVS_VideoInfo * p, int pixels) 
-        { return pixels * (avs_bits_per_pixel(p)>>3); }   // Will work on planar images, but will return only luma planes
-
-AVSC_INLINE int avs_row_size(const AVS_VideoInfo * p) 
-        { return avs_bytes_from_pixels(p,p->width); }  // Also only returns first plane on planar images
-
-AVSC_INLINE int avs_bmp_size(const AVS_VideoInfo * vi)                
-        { if (avs_is_planar(vi)) {int p = vi->height * ((avs_row_size(vi)+3) & ~3); p+=p>>1; return p;  } return vi->height * ((avs_row_size(vi)+3) & ~3); }
-
-AVSC_INLINE int avs_samples_per_second(const AVS_VideoInfo * p) 
-        { return p->audio_samples_per_second; }
-
-
-AVSC_INLINE int avs_bytes_per_channel_sample(const AVS_VideoInfo * p) 
-{
-    switch (p->sample_type) {
-      case AVS_SAMPLE_INT8:  return sizeof(signed char);
-      case AVS_SAMPLE_INT16: return sizeof(signed short);
-      case AVS_SAMPLE_INT24: return 3;
-      case AVS_SAMPLE_INT32: return sizeof(signed int);
-      case AVS_SAMPLE_FLOAT: return sizeof(float);
-      default: return 0;
-    }
-}
-AVSC_INLINE int avs_bytes_per_audio_sample(const AVS_VideoInfo * p)   
-        { return p->nchannels*avs_bytes_per_channel_sample(p);}
-
-AVSC_INLINE INT64 avs_audio_samples_from_frames(const AVS_VideoInfo * p, INT64 frames) 
-        { return ((INT64)(frames) * p->audio_samples_per_second * p->fps_denominator / p->fps_numerator); }
-
-AVSC_INLINE int avs_frames_from_audio_samples(const AVS_VideoInfo * p, INT64 samples) 
-        { return (int)(samples * (INT64)p->fps_numerator / (INT64)p->fps_denominator / (INT64)p->audio_samples_per_second); }
-
-AVSC_INLINE INT64 avs_audio_samples_from_bytes(const AVS_VideoInfo * p, INT64 bytes) 
-        { return bytes / avs_bytes_per_audio_sample(p); }
-
-AVSC_INLINE INT64 avs_bytes_from_audio_samples(const AVS_VideoInfo * p, INT64 samples) 
-        { return samples * avs_bytes_per_audio_sample(p); }
-
-AVSC_INLINE int avs_audio_channels(const AVS_VideoInfo * p) 
-        { return p->nchannels; }
-
-AVSC_INLINE int avs_sample_type(const AVS_VideoInfo * p)
-        { return p->sample_type;}
-
-// useful mutator
-AVSC_INLINE void avs_set_property(AVS_VideoInfo * p, int property)  
-        { p->image_type|=property; }
-
-AVSC_INLINE void avs_clear_property(AVS_VideoInfo * p, int property)  
-        { p->image_type&=~property; }
-
-AVSC_INLINE void avs_set_field_based(AVS_VideoInfo * p, int isfieldbased)  
-        { if (isfieldbased) p->image_type|=AVS_IT_FIELDBASED; else p->image_type&=~AVS_IT_FIELDBASED; }
-
-AVSC_INLINE void avs_set_fps(AVS_VideoInfo * p, unsigned numerator, unsigned denominator) 
-{
-    unsigned x=numerator, y=denominator;
-    while (y) {   // find gcd
-      unsigned t = x%y; x = y; y = t;
-    }
-    p->fps_numerator = numerator/x;
-    p->fps_denominator = denominator/x;
-}
-
-AVSC_INLINE int avs_is_same_colorspace(AVS_VideoInfo * x, AVS_VideoInfo * y)
-{
-        return (x->pixel_type == y->pixel_type)
-                || (avs_is_yv12(x) && avs_is_yv12(y));
-}
-
-/////////////////////////////////////////////////////////////////////
-//
-// AVS_VideoFrame
-//
-
-// VideoFrameBuffer holds information about a memory block which is used
-// for video data.  For efficiency, instances of this class are not deleted
-// when the refcount reaches zero; instead they're stored in a linked list
-// to be reused.  The instances are deleted when the corresponding AVS
-// file is closed.
-
-// AVS_VideoFrameBuffer is layed out identicly to VideoFrameBuffer
-// DO NOT USE THIS STRUCTURE DIRECTLY
-typedef struct AVS_VideoFrameBuffer {
-  unsigned char * data;
-  int data_size;
-  // sequence_number is incremented every time the buffer is changed, so
-  // that stale views can tell they're no longer valid.
-  long sequence_number;
-
-  long refcount;
-} AVS_VideoFrameBuffer;
-
-// VideoFrame holds a "window" into a VideoFrameBuffer.
-
-// AVS_VideoFrame is layed out identicly to IVideoFrame
-// DO NOT USE THIS STRUCTURE DIRECTLY
-typedef struct AVS_VideoFrame {
-  int refcount;
-  AVS_VideoFrameBuffer * vfb;
-  int offset, pitch, row_size, height, offsetU, offsetV, pitchUV;  // U&V offsets are from top of picture.
-} AVS_VideoFrame;
-
-// Access functions for AVS_VideoFrame
-AVSC_INLINE int avs_get_pitch(const AVS_VideoFrame * p) {
-        return p->pitch;}
-
-AVSC_INLINE int avs_get_pitch_p(const AVS_VideoFrame * p, int plane) { 
-  switch (plane) {
-  case AVS_PLANAR_U: case AVS_PLANAR_V: return p->pitchUV;}
-  return p->pitch;}
-
-AVSC_INLINE int avs_get_row_size(const AVS_VideoFrame * p) {
-        return p->row_size; }
-
-AVSC_INLINE int avs_get_row_size_p(const AVS_VideoFrame * p, int plane) { 
-        int r;
-    switch (plane) {
-    case AVS_PLANAR_U: case AVS_PLANAR_V: 
-                if (p->pitchUV) return p->row_size>>1; 
-                else            return 0;
-    case AVS_PLANAR_U_ALIGNED: case AVS_PLANAR_V_ALIGNED: 
-                if (p->pitchUV) { 
-                        r = ((p->row_size+AVS_FRAME_ALIGN-1)&(~(AVS_FRAME_ALIGN-1)) )>>1; // Aligned rowsize
-                        if (r < p->pitchUV) 
-                                return r; 
-                        return p->row_size>>1; 
-                } else return 0;
-    case AVS_PLANAR_Y_ALIGNED:
-                r = (p->row_size+AVS_FRAME_ALIGN-1)&(~(AVS_FRAME_ALIGN-1)); // Aligned rowsize
-                if (r <= p->pitch) 
-                        return r; 
-                return p->row_size;
-    }
-    return p->row_size;
-}
-
-AVSC_INLINE int avs_get_height(const AVS_VideoFrame * p) {
-        return p->height;}
-
-AVSC_INLINE int avs_get_height_p(const AVS_VideoFrame * p, int plane) {
-        switch (plane) {
-                case AVS_PLANAR_U: case AVS_PLANAR_V: 
-                        if (p->pitchUV) return p->height>>1;
-                        return 0;
-        }
-        return p->height;}
-
-AVSC_INLINE const unsigned char* avs_get_read_ptr(const AVS_VideoFrame * p) {
-        return p->vfb->data + p->offset;}
-
-AVSC_INLINE const unsigned char* avs_get_read_ptr_p(const AVS_VideoFrame * p, int plane) 
-{
-        switch (plane) {
-                case AVS_PLANAR_U: return p->vfb->data + p->offsetU;
-                case AVS_PLANAR_V: return p->vfb->data + p->offsetV;
-                default:           return p->vfb->data + p->offset;}
-}
-
-AVSC_INLINE int avs_is_writable(const AVS_VideoFrame * p) {
-        return (p->refcount == 1 && p->vfb->refcount == 1);}
-
-AVSC_INLINE unsigned char* avs_get_write_ptr(const AVS_VideoFrame * p) 
-{
-        if (avs_is_writable(p)) {
-                ++p->vfb->sequence_number;
-                return p->vfb->data + p->offset;
-        } else
-                return 0;
-}
-
-AVSC_INLINE unsigned char* avs_get_write_ptr_p(const AVS_VideoFrame * p, int plane) 
-{
-        if (plane==AVS_PLANAR_Y && avs_is_writable(p)) {
-                ++p->vfb->sequence_number;
-                return p->vfb->data + p->offset;
-        } else if (plane==AVS_PLANAR_Y) {
-                return 0;
-        } else {
-                switch (plane) {
-                        case AVS_PLANAR_U: return p->vfb->data + p->offsetU;
-                        case AVS_PLANAR_V: return p->vfb->data + p->offsetV;
-                        default:       return p->vfb->data + p->offset;
-                }
-        }
-}
-
-#if defined __cplusplus
-extern "C"
-{
-#endif // __cplusplus
-AVSC_API(void, avs_release_video_frame)(AVS_VideoFrame *);
-// makes a shallow copy of a video frame
-AVSC_API(AVS_VideoFrame *, avs_copy_video_frame)(AVS_VideoFrame *);
-#if defined __cplusplus
-}
-#endif // __cplusplus
-
-#ifndef AVSC_NO_DECLSPEC
-AVSC_INLINE void avs_release_frame(AVS_VideoFrame * f)
-  {avs_release_video_frame(f);}
-AVSC_INLINE AVS_VideoFrame * avs_copy_frame(AVS_VideoFrame * f)
-  {return avs_copy_video_frame(f);}
-#endif
-
-/////////////////////////////////////////////////////////////////////
-//
-// AVS_Value
-//
-
-// Treat AVS_Value as a fat pointer.  That is use avs_copy_value
-// and avs_release_value appropiaty as you would if AVS_Value was
-// a pointer.
-
-// To maintain source code compatibility with future versions of the
-// avisynth_c API don't use the AVS_Value directly.  Use the helper
-// functions below.
-
-// AVS_Value is layed out identicly to AVSValue
-typedef struct AVS_Value AVS_Value;
-struct AVS_Value {
-  short type;  // 'a'rray, 'c'lip, 'b'ool, 'i'nt, 'f'loat, 's'tring, 'v'oid, or 'l'ong
-               // for some function e'rror
-  short array_size;
-  union {
-    void * clip; // do not use directly, use avs_take_clip
-    char boolean;
-    int integer;
-    INT64 integer64; // match addition of __int64 to avxplugin.h
-    float floating_pt;
-    const char * string;
-    const AVS_Value * array;
-  } d;
-};
-
-// AVS_Value should be initilized with avs_void.
-// Should also set to avs_void after the value is released
-// with avs_copy_value.  Consider it the equalvent of setting
-// a pointer to NULL
-static const AVS_Value avs_void = {'v'};
-
-AVSC_API(void, avs_copy_value)(AVS_Value * dest, AVS_Value src);
-AVSC_API(void, avs_release_value)(AVS_Value);
-
-AVSC_INLINE int avs_defined(AVS_Value v) { return v.type != 'v'; }
-AVSC_INLINE int avs_is_clip(AVS_Value v) { return v.type == 'c'; }
-AVSC_INLINE int avs_is_bool(AVS_Value v) { return v.type == 'b'; }
-AVSC_INLINE int avs_is_int(AVS_Value v) { return v.type == 'i'; }
-AVSC_INLINE int avs_is_float(AVS_Value v) { return v.type == 'f' || v.type == 'i'; }
-AVSC_INLINE int avs_is_string(AVS_Value v) { return v.type == 's'; }
-AVSC_INLINE int avs_is_array(AVS_Value v) { return v.type == 'a'; }
-AVSC_INLINE int avs_is_error(AVS_Value v) { return v.type == 'e'; }
-
-#if defined __cplusplus
-extern "C"
-{
-#endif // __cplusplus
-AVSC_API(AVS_Clip *, avs_take_clip)(AVS_Value, AVS_ScriptEnvironment *);
-AVSC_API(void, avs_set_to_clip)(AVS_Value *, AVS_Clip *);
-#if defined __cplusplus
-}
-#endif // __cplusplus
-
-AVSC_INLINE int avs_as_bool(AVS_Value v) 
-        { return v.d.boolean; }   
-AVSC_INLINE int avs_as_int(AVS_Value v) 
-        { return v.d.integer; }   
-AVSC_INLINE const char * avs_as_string(AVS_Value v) 
-        { return avs_is_error(v) || avs_is_string(v) ? v.d.string : 0; }
-AVSC_INLINE double avs_as_float(AVS_Value v) 
-        { return avs_is_int(v) ? v.d.integer : v.d.floating_pt; }
-AVSC_INLINE const char * avs_as_error(AVS_Value v) 
-        { return avs_is_error(v) ? v.d.string : 0; }
-AVSC_INLINE const AVS_Value * avs_as_array(AVS_Value v)
-        { return v.d.array; }
-AVSC_INLINE int avs_array_size(AVS_Value v) 
-        { return avs_is_array(v) ? v.array_size : 1; }
-AVSC_INLINE AVS_Value avs_array_elt(AVS_Value v, int index) 
-        { return avs_is_array(v) ? v.d.array[index] : v; }
-
-// only use these functions on am AVS_Value that does not already have
-// an active value.  Remember, treat AVS_Value as a fat pointer.
-AVSC_INLINE AVS_Value avs_new_value_bool(int v0) 
-        { AVS_Value v; v.type = 'b'; v.d.boolean = v0 == 0 ? 0 : 1; return v; }   
-AVSC_INLINE AVS_Value avs_new_value_int(int v0) 
-        { AVS_Value v; v.type = 'i'; v.d.integer = v0; return v; }   
-AVSC_INLINE AVS_Value avs_new_value_string(const char * v0) 
-        { AVS_Value v; v.type = 's'; v.d.string = v0; return v; }
-AVSC_INLINE AVS_Value avs_new_value_float(float v0) 
-        { AVS_Value v; v.type = 'f'; v.d.floating_pt = v0; return v;}
-AVSC_INLINE AVS_Value avs_new_value_error(const char * v0) 
-        { AVS_Value v; v.type = 'e'; v.d.string = v0; return v; }
-#ifndef AVSC_NO_DECLSPEC
-AVSC_INLINE AVS_Value avs_new_value_clip(AVS_Clip * v0)
-        { AVS_Value v; avs_set_to_clip(&v, v0); return v; }
-#endif
-AVSC_INLINE AVS_Value avs_new_value_array(AVS_Value * v0, int size)
-        { AVS_Value v; v.type = 'a'; v.d.array = v0; v.array_size = size; return v; }
-
-/////////////////////////////////////////////////////////////////////
-//
-// AVS_Clip
-//
-#if defined __cplusplus
-extern "C"
-{
-#endif // __cplusplus
-AVSC_API(void, avs_release_clip)(AVS_Clip *);
-AVSC_API(AVS_Clip *, avs_copy_clip)(AVS_Clip *);
-
-AVSC_API(const char *, avs_clip_get_error)(AVS_Clip *); // return 0 if no error
-
-AVSC_API(const AVS_VideoInfo *, avs_get_video_info)(AVS_Clip *);
-
-AVSC_API(int, avs_get_version)(AVS_Clip *);
- 
-AVSC_API(AVS_VideoFrame *, avs_get_frame)(AVS_Clip *, int n);
-// The returned video frame must be released with avs_release_video_frame
-
-AVSC_API(int, avs_get_parity)(AVS_Clip *, int n); 
-// return field parity if field_based, else parity of first field in frame
-
-AVSC_API(int, avs_get_audio)(AVS_Clip *, void * buf, 
-                                  INT64 start, INT64 count); 
-// start and count are in samples
-
-AVSC_API(int, avs_set_cache_hints)(AVS_Clip *, 
-                                        int cachehints, size_t frame_range);
-#if defined __cplusplus
-}
-#endif // __cplusplus
-
-// This is the callback type used by avs_add_function
-typedef AVS_Value (AVSC_CC * AVS_ApplyFunc)
-                        (AVS_ScriptEnvironment *, AVS_Value args, void * user_data);
-
-typedef struct AVS_FilterInfo AVS_FilterInfo;
-struct AVS_FilterInfo
-{
-  // these members should not be modified outside of the AVS_ApplyFunc callback
-  AVS_Clip * child;
-  AVS_VideoInfo vi;
-  AVS_ScriptEnvironment * env;
-  AVS_VideoFrame * (AVSC_CC * get_frame)(AVS_FilterInfo *, int n);
-  int (AVSC_CC * get_parity)(AVS_FilterInfo *, int n);
-  int (AVSC_CC * get_audio)(AVS_FilterInfo *, void * buf, 
-				  INT64 start, INT64 count);
-  int (AVSC_CC * set_cache_hints)(AVS_FilterInfo *, int cachehints, 
-					int frame_range);
-  void (AVSC_CC * free_filter)(AVS_FilterInfo *);
-  
-  // Should be set when ever there is an error to report.
-  // It is cleared before any of the above methods are called
-  const char * error;
-  // this is to store whatever and may be modified at will
-  void * user_data;
-};
-
-// Create a new filter
-// fi is set to point to the AVS_FilterInfo so that you can
-//   modify it once it is initilized.
-// store_child should generally be set to true.  If it is not
-//    set than ALL methods (the function pointers) must be defined
-// If it is set than you do not need to worry about freeing the child
-//    clip.
-#if defined __cplusplus
-extern "C"
-{
-#endif // __cplusplus
-AVSC_API(AVS_Clip *, avs_new_c_filter)(AVS_ScriptEnvironment * e,
-                                      AVS_FilterInfo * * fi,
-                                      AVS_Value child, int store_child);
-#if defined __cplusplus
-}
-#endif // __cplusplus
-
-
-/////////////////////////////////////////////////////////////////////
-//
-// AVS_ScriptEnvironment
-//
-
-// For GetCPUFlags.  These are backwards-compatible with those in VirtualDub.
-enum {                    
-                                /* slowest CPU to support extension */
-  AVS_CPU_FORCE        = 0x01,   // N/A
-  AVS_CPU_FPU          = 0x02,   // 386/486DX
-  AVS_CPU_MMX          = 0x04,   // P55C, K6, PII
-  AVS_CPU_INTEGER_SSE  = 0x08,   // PIII, Athlon
-  AVS_CPU_SSE          = 0x10,   // PIII, Athlon XP/MP
-  AVS_CPU_SSE2         = 0x20,   // PIV, Hammer
-  AVS_CPU_3DNOW        = 0x40,   // K6-2
-  AVS_CPU_3DNOW_EXT    = 0x80,   // Athlon
-  AVS_CPU_X86_64       = 0xA0,   // Hammer (note: equiv. to 3DNow + SSE2, 
-                                 // which only Hammer will have anyway)
-};
-
-#if defined __cplusplus
-extern "C"
-{
-#endif // __cplusplus
-AVSC_API(const char *, avs_get_error)(AVS_ScriptEnvironment *); // return 0 if no error
-
-AVSC_API(long, avs_get_cpu_flags)(AVS_ScriptEnvironment *);
-AVSC_API(int, avs_check_version)(AVS_ScriptEnvironment *, int version);
-
-AVSC_API(char *, avs_save_string)(AVS_ScriptEnvironment *, const char* s, int length);
-AVSC_API(char *, avs_sprintf)(AVS_ScriptEnvironment *, const char * fmt, ...);
-
-AVSC_API(char *, avs_vsprintf)(AVS_ScriptEnvironment *, const char * fmt, va_list val);
- // note: val is really a va_list; I hope everyone typedefs va_list to a pointer
-
-AVSC_API(int, avs_add_function)(AVS_ScriptEnvironment *, 
-				     const char * name, const char * params, 
-				     AVS_ApplyFunc apply, void * user_data);
-
-AVSC_API(int, avs_function_exists)(AVS_ScriptEnvironment *, const char * name);
-
-AVSC_API(AVS_Value, avs_invoke)(AVS_ScriptEnvironment *, const char * name, 
-                               AVS_Value args, const char** arg_names);
-// The returned value must be be released with avs_release_value
-
-AVSC_API(AVS_Value, avs_get_var)(AVS_ScriptEnvironment *, const char* name);
-// The returned value must be be released with avs_release_value
-
-AVSC_API(int, avs_set_var)(AVS_ScriptEnvironment *, const char* name, AVS_Value val);
-
-AVSC_API(int, avs_set_global_var)(AVS_ScriptEnvironment *, const char* name, const AVS_Value val);
-
-//void avs_push_context(AVS_ScriptEnvironment *, int level=0);
-//void avs_pop_context(AVS_ScriptEnvironment *);
-
-AVSC_API(AVS_VideoFrame *, avs_new_video_frame_a)(AVS_ScriptEnvironment *, 
-                                          const AVS_VideoInfo * vi, int align);
-// align should be at least 16
-#if defined __cplusplus
-}
-#endif // __cplusplus
-
-#ifndef AVSC_NO_DECLSPEC
-AVSC_INLINE 
-AVS_VideoFrame * avs_new_video_frame(AVS_ScriptEnvironment * env, 
-                                     const AVS_VideoInfo * vi)
-  {return avs_new_video_frame_a(env,vi,AVS_FRAME_ALIGN);}
-
-AVSC_INLINE 
-AVS_VideoFrame * avs_new_frame(AVS_ScriptEnvironment * env, 
-                               const AVS_VideoInfo * vi)
-  {return avs_new_video_frame_a(env,vi,AVS_FRAME_ALIGN);}
-#endif
-
-#if defined __cplusplus
-extern "C"
-{
-#endif // __cplusplus
-AVSC_API(int, avs_make_writable)(AVS_ScriptEnvironment *, AVS_VideoFrame * * pvf);
-
-AVSC_API(void, avs_bit_blt)(AVS_ScriptEnvironment *, unsigned char* dstp, int dst_pitch, const unsigned char* srcp, int src_pitch, int row_size, int height);
-
-typedef void (AVSC_CC *AVS_ShutdownFunc)(void* user_data, AVS_ScriptEnvironment * env);
-AVSC_API(void, avs_at_exit)(AVS_ScriptEnvironment *, AVS_ShutdownFunc function, void * user_data);
-
-AVSC_API(AVS_VideoFrame *, avs_subframe)(AVS_ScriptEnvironment *, AVS_VideoFrame * src, int rel_offset, int new_pitch, int new_row_size, int new_height);
-// The returned video frame must be be released
-
-AVSC_API(int, avs_set_memory_max)(AVS_ScriptEnvironment *, int mem);
-
-AVSC_API(int, avs_set_working_dir)(AVS_ScriptEnvironment *, const char * newdir);
-
-// avisynth.dll exports this; it's a way to use it as a library, without
-// writing an AVS script or without going through AVIFile.
-AVSC_API(AVS_ScriptEnvironment *, avs_create_script_environment)(int version);
-#if defined __cplusplus
-}
-#endif // __cplusplus
-
-// this symbol is the entry point for the plugin and must
-// be defined
-AVSC_EXPORT
-const char * AVSC_CC avisynth_c_plugin_init(AVS_ScriptEnvironment* env);
-
-
-#if defined __cplusplus
-extern "C"
-{
-#endif // __cplusplus
-AVSC_API(void, avs_delete_script_environment)(AVS_ScriptEnvironment *);
-
-
-AVSC_API(AVS_VideoFrame *, avs_subframe_planar)(AVS_ScriptEnvironment *, AVS_VideoFrame * src, int rel_offset, int new_pitch, int new_row_size, int new_height, int rel_offsetU, int rel_offsetV, int new_pitchUV);
-// The returned video frame must be be released
-#if defined __cplusplus
-}
-#endif // __cplusplus
-
-#endif //__AVXSYNTH_C__


=====================================
input/avs.c
=====================================
@@ -26,28 +26,25 @@
 
 #include "input.h"
 
-#if USE_AVXSYNTH
+#if SYS_WINDOWS || SYS_CYGWIN
+#include <windows.h>
+#define avs_open() LoadLibraryW( L"avisynth" )
+#define avs_close FreeLibrary
+#define avs_address GetProcAddress
+#else
 #include <dlfcn.h>
 #if SYS_MACOSX
-#define avs_open() dlopen( "libavxsynth.dylib", RTLD_NOW )
+#define avs_open() dlopen( "libavisynth.dylib", RTLD_NOW )
 #else
-#define avs_open() dlopen( "libavxsynth.so", RTLD_NOW )
+#define avs_open() dlopen( "libavisynth.so", RTLD_NOW )
 #endif
 #define avs_close dlclose
 #define avs_address dlsym
-#else
-#define avs_open() LoadLibraryW( L"avisynth" )
-#define avs_close FreeLibrary
-#define avs_address GetProcAddress
 #endif
 
 #define AVSC_NO_DECLSPEC
 #undef EXTERN_C
-#if USE_AVXSYNTH
-#include "extras/avxsynth_c.h"
-#else
 #include "extras/avisynth_c.h"
-#endif
 #define AVSC_DECLARE_FUNC(name) name##_func name
 
 #define FAIL_IF_ERROR( cond, ... ) FAIL_IF_ERR( cond, "avs", __VA_ARGS__ )
@@ -98,7 +95,13 @@ typedef struct
         AVSC_DECLARE_FUNC( avs_release_value );
         AVSC_DECLARE_FUNC( avs_release_video_frame );
         AVSC_DECLARE_FUNC( avs_take_clip );
-#if !USE_AVXSYNTH
+        AVSC_DECLARE_FUNC( avs_is_yv24 );
+        AVSC_DECLARE_FUNC( avs_is_yv16 );
+        AVSC_DECLARE_FUNC( avs_is_yv12 );
+        AVSC_DECLARE_FUNC( avs_is_yv411 );
+        AVSC_DECLARE_FUNC( avs_is_y8 );
+        AVSC_DECLARE_FUNC( avs_get_pitch_p );
+        AVSC_DECLARE_FUNC( avs_get_read_ptr_p );
         // AviSynth+ extension
         AVSC_DECLARE_FUNC( avs_is_rgb48 );
         AVSC_DECLARE_FUNC( avs_is_rgb64 );
@@ -106,21 +109,10 @@ typedef struct
         AVSC_DECLARE_FUNC( avs_is_yuv422p16 );
         AVSC_DECLARE_FUNC( avs_is_yuv420p16 );
         AVSC_DECLARE_FUNC( avs_is_y16 );
-        AVSC_DECLARE_FUNC( avs_is_yuv444ps );
-        AVSC_DECLARE_FUNC( avs_is_yuv422ps );
-        AVSC_DECLARE_FUNC( avs_is_yuv420ps );
-        AVSC_DECLARE_FUNC( avs_is_y32 );
         AVSC_DECLARE_FUNC( avs_is_444 );
         AVSC_DECLARE_FUNC( avs_is_422 );
         AVSC_DECLARE_FUNC( avs_is_420 );
         AVSC_DECLARE_FUNC( avs_is_y );
-        AVSC_DECLARE_FUNC( avs_is_yuva );
-        AVSC_DECLARE_FUNC( avs_is_planar_rgb );
-        AVSC_DECLARE_FUNC( avs_is_planar_rgba );
-        AVSC_DECLARE_FUNC( avs_num_components );
-        AVSC_DECLARE_FUNC( avs_component_size );
-        AVSC_DECLARE_FUNC( avs_bits_per_component );
-#endif
     } func;
 } avs_hnd_t;
 
@@ -142,7 +134,13 @@ static int custom_avs_load_library( avs_hnd_t *h )
     LOAD_AVS_FUNC( avs_release_value, 0 );
     LOAD_AVS_FUNC( avs_release_video_frame, 0 );
     LOAD_AVS_FUNC( avs_take_clip, 0 );
-#if !USE_AVXSYNTH
+    LOAD_AVS_FUNC( avs_is_yv24, 1 );
+    LOAD_AVS_FUNC( avs_is_yv16, 1 );
+    LOAD_AVS_FUNC( avs_is_yv12, 1 );
+    LOAD_AVS_FUNC( avs_is_yv411, 1 );
+    LOAD_AVS_FUNC( avs_is_y8, 1 );
+    LOAD_AVS_FUNC( avs_get_pitch_p, 1 );
+    LOAD_AVS_FUNC( avs_get_read_ptr_p, 1 );
     // AviSynth+ extension
     LOAD_AVS_FUNC( avs_is_rgb48, 1 );
     LOAD_AVS_FUNC_ALIAS( avs_is_rgb48, "_avs_is_rgb48 at 4", 1 );
@@ -152,21 +150,10 @@ static int custom_avs_load_library( avs_hnd_t *h )
     LOAD_AVS_FUNC( avs_is_yuv422p16, 1 );
     LOAD_AVS_FUNC( avs_is_yuv420p16, 1 );
     LOAD_AVS_FUNC( avs_is_y16, 1 );
-    LOAD_AVS_FUNC( avs_is_yuv444ps, 1 );
-    LOAD_AVS_FUNC( avs_is_yuv422ps, 1 );
-    LOAD_AVS_FUNC( avs_is_yuv420ps, 1 );
-    LOAD_AVS_FUNC( avs_is_y32, 1 );
     LOAD_AVS_FUNC( avs_is_444, 1 );
     LOAD_AVS_FUNC( avs_is_422, 1 );
     LOAD_AVS_FUNC( avs_is_420, 1 );
     LOAD_AVS_FUNC( avs_is_y, 1 );
-    LOAD_AVS_FUNC( avs_is_yuva, 1 );
-    LOAD_AVS_FUNC( avs_is_planar_rgb, 1 );
-    LOAD_AVS_FUNC( avs_is_planar_rgba, 1 );
-    LOAD_AVS_FUNC( avs_num_components, 1 );
-    LOAD_AVS_FUNC( avs_component_size, 1 );
-    LOAD_AVS_FUNC( avs_bits_per_component, 1 );
-#endif
     return 0;
 fail:
     avs_close( h->library );
@@ -174,45 +161,31 @@ fail:
     return -1;
 }
 
-/* AvxSynth doesn't have yv24, yv16, yv411, or y8, so disable them. */
-#if USE_AVXSYNTH
-#define avs_is_yv24( vi ) (0)
-#define avs_is_yv16( vi ) (0)
-#define avs_is_yv411( vi ) (0)
-#define avs_is_y8( vi ) (0)
-/* AvxSynth doesn't support AviSynth+ pixel types. */
-#define AVS_IS_AVISYNTHPLUS (0)
-#define AVS_IS_420( vi ) (0)
-#define AVS_IS_422( vi ) (0)
-#define AVS_IS_444( vi ) (0)
-#define AVS_IS_RGB48( vi ) (0)
-#define AVS_IS_RGB64( vi ) (0)
-#define AVS_IS_YUV420P16( vi ) (0)
-#define AVS_IS_YUV422P16( vi ) (0)
-#define AVS_IS_YUV444P16( vi ) (0)
-#define AVS_IS_Y( vi ) (0)
-#define AVS_IS_Y16( vi ) (0)
-#else
+#define AVS_IS_YV24( vi ) (h->func.avs_is_yv24 ? h->func.avs_is_yv24( vi ) : avs_is_yv24( vi ))
+#define AVS_IS_YV16( vi ) (h->func.avs_is_yv16 ? h->func.avs_is_yv16( vi ) : avs_is_yv16( vi ))
+#define AVS_IS_YV12( vi ) (h->func.avs_is_yv12 ? h->func.avs_is_yv12( vi ) : avs_is_yv12( vi ))
+#define AVS_IS_YV411( vi ) (h->func.avs_is_yv411 ? h->func.avs_is_yv411( vi ) : avs_is_yv411( vi ))
+#define AVS_IS_Y8( vi ) (h->func.avs_is_y8 ? h->func.avs_is_y8( vi ) : avs_is_y8( vi ))
+#define AVS_GET_PITCH_P( p, plane ) (h->func.avs_get_pitch_p ? h->func.avs_get_pitch_p( p, plane ) : avs_get_pitch_p( p, plane ))
+#define AVS_GET_READ_PTR_P( p, plane ) (h->func.avs_get_read_ptr_p ? h->func.avs_get_read_ptr_p( p, plane ) : avs_get_read_ptr_p( p, plane ))
+
 #define AVS_IS_AVISYNTHPLUS (h->func.avs_is_420 && h->func.avs_is_422 && h->func.avs_is_444)
-#define AVS_IS_420( vi ) (h->func.avs_is_420 ? h->func.avs_is_420( vi ) : avs_is_yv12( vi ))
-#define AVS_IS_422( vi ) (h->func.avs_is_422 ? h->func.avs_is_422( vi ) : avs_is_yv16( vi ))
-#define AVS_IS_444( vi ) (h->func.avs_is_444 ? h->func.avs_is_444( vi ) : avs_is_yv24( vi ))
+#define AVS_IS_420( vi ) (h->func.avs_is_420 ? h->func.avs_is_420( vi ) : AVS_IS_YV12( vi ))
+#define AVS_IS_422( vi ) (h->func.avs_is_422 ? h->func.avs_is_422( vi ) : AVS_IS_YV16( vi ))
+#define AVS_IS_444( vi ) (h->func.avs_is_444 ? h->func.avs_is_444( vi ) : AVS_IS_YV24( vi ))
 #define AVS_IS_RGB48( vi ) (h->func.avs_is_rgb48 && h->func.avs_is_rgb48( vi ))
 #define AVS_IS_RGB64( vi ) (h->func.avs_is_rgb64 && h->func.avs_is_rgb64( vi ))
 #define AVS_IS_YUV420P16( vi ) (h->func.avs_is_yuv420p16 && h->func.avs_is_yuv420p16( vi ))
 #define AVS_IS_YUV422P16( vi ) (h->func.avs_is_yuv422p16 && h->func.avs_is_yuv422p16( vi ))
 #define AVS_IS_YUV444P16( vi ) (h->func.avs_is_yuv444p16 && h->func.avs_is_yuv444p16( vi ))
-#define AVS_IS_Y( vi ) (h->func.avs_is_y ? h->func.avs_is_y( vi ) : avs_is_y8( vi ))
+#define AVS_IS_Y( vi ) (h->func.avs_is_y ? h->func.avs_is_y( vi ) : AVS_IS_Y8( vi ))
 #define AVS_IS_Y16( vi ) (h->func.avs_is_y16 && h->func.avs_is_y16( vi ))
-#endif
 
 /* generate a filter sequence to try based on the filename extension */
 static void avs_build_filter_sequence( char *filename_ext, const char *filter[AVS_MAX_SEQUENCE+1] )
 {
     int i = 0;
-#if USE_AVXSYNTH
-    const char *all_purpose[] = { "FFVideoSource", 0 };
-#else
+#if SYS_WINDOWS || SYS_CYGWIN
     const char *all_purpose[] = { "FFmpegSource2", "DSS2", "DirectShowSource", 0 };
     if( !strcasecmp( filename_ext, "avi" ) )
         filter[i++] = "AVISource";
@@ -220,6 +193,8 @@ static void avs_build_filter_sequence( char *filename_ext, const char *filter[AV
         filter[i++] = "MPEG2Source";
     if( !strcasecmp( filename_ext, "dga" ) )
         filter[i++] = "AVCSource";
+#else
+    const char *all_purpose[] = { "FFVideoSource", 0 };
 #endif
     for( int j = 0; all_purpose[j] && i < AVS_MAX_SEQUENCE; j++ )
         filter[i++] = all_purpose[j];
@@ -236,13 +211,6 @@ static AVS_Value update_clip( avs_hnd_t *h, const AVS_VideoInfo **vi, AVS_Value
 
 static float get_avs_version( avs_hnd_t *h )
 {
-/* AvxSynth has its version defined starting at 4.0, even though it's based on
-   AviSynth 2.5.8. This is troublesome for get_avs_version and working around
-   the new colorspaces in 2.6.  So if AvxSynth is detected, explicitly define
-   the version as 2.58. */
-#if USE_AVXSYNTH
-    return 2.58f;
-#else
     FAIL_IF_ERROR( !h->func.avs_function_exists( h->env, "VersionNumber" ), "VersionNumber does not exist\n" );
     AVS_Value ver = h->func.avs_invoke( h->env, "VersionNumber", avs_new_value_array( NULL, 0 ), NULL );
     FAIL_IF_ERROR( avs_is_error( ver ), "unable to determine avisynth version: %s\n", avs_as_error( ver ) );
@@ -250,7 +218,6 @@ static float get_avs_version( avs_hnd_t *h )
     float ret = avs_as_float( ver );
     h->func.avs_release_value( ver );
     return ret;
-#endif
 }
 
 #ifdef _WIN32
@@ -502,24 +469,24 @@ static int open_file( char *psz_filename, hnd_t *p_handle, video_info_t *info, c
         info->csp = X264_CSP_BGR | X264_CSP_VFLIP;
     else if( AVS_IS_YUV444P16( vi ) )
         info->csp = X264_CSP_I444 | X264_CSP_HIGH_DEPTH;
-    else if( avs_is_yv24( vi ) )
+    else if( AVS_IS_YV24( vi ) )
         info->csp = X264_CSP_I444;
     else if( AVS_IS_YUV422P16( vi ) )
         info->csp = X264_CSP_I422 | X264_CSP_HIGH_DEPTH;
-    else if( avs_is_yv16( vi ) )
+    else if( AVS_IS_YV16( vi ) )
         info->csp = X264_CSP_I422;
     else if( AVS_IS_YUV420P16( vi ) )
         info->csp = X264_CSP_I420 | X264_CSP_HIGH_DEPTH;
-    else if( avs_is_yv12( vi ) )
+    else if( AVS_IS_YV12( vi ) )
         info->csp = X264_CSP_I420;
     else if( AVS_IS_Y16( vi ) )
         info->csp = X264_CSP_I400 | X264_CSP_HIGH_DEPTH;
-    else if( avs_is_y8( vi ) )
+    else if( AVS_IS_Y8( vi ) )
         info->csp = X264_CSP_I400;
     else if( avs_is_yuy2( vi ) )
         info->csp = X264_CSP_YUYV;
 #if HAVE_SWSCALE
-    else if( avs_is_yv411( vi ) )
+    else if( AVS_IS_YV411( vi ) )
         info->csp = AV_PIX_FMT_YUV411P | X264_CSP_OTHER;
 #endif
     else
@@ -563,8 +530,8 @@ static int read_frame( cli_pic_t *pic, hnd_t handle, int i_frame )
     for( int i = 0; i < pic->img.planes; i++ )
     {
         /* explicitly cast away the const attribute to avoid a warning */
-        pic->img.plane[i] = (uint8_t*)avs_get_read_ptr_p( frm, plane[i] );
-        pic->img.stride[i] = avs_get_pitch_p( frm, plane[i] );
+        pic->img.plane[i] = (uint8_t*)AVS_GET_READ_PTR_P( frm, plane[i] );
+        pic->img.stride[i] = AVS_GET_PITCH_P( frm, plane[i] );
     }
     return 0;
 }



View it on GitLab: https://code.videolan.org/videolan/x264/-/commit/35fe20d1ba49918ec739a5b068c208ca82f977f7

-- 
View it on GitLab: https://code.videolan.org/videolan/x264/-/commit/35fe20d1ba49918ec739a5b068c208ca82f977f7
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