--- /dev/null
+// 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.
+
+// 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.
+
+#ifndef __AVISYNTH_C__
+#define __AVISYNTH_C__
+
+#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
+
+typedef unsigned char BYTE;
+#ifdef __GNUC__
+typedef long long int INT64;
+#else
+typedef __int64 INT64;
+#endif
+
+
+/////////////////////////////////////////////////////////////////////
+//
+// Constants
+//
+
+#ifndef __AVISYNTH_H__
+enum { AVISYNTH_INTERFACE_VERSION = 4 };
+#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,
+ AVS_PLANAR_A=1<<4,
+ AVS_PLANAR_R=1<<5,
+ AVS_PLANAR_G=1<<6,
+ AVS_PLANAR_B=1<<7,
+ AVS_PLANAR_A_ALIGNED=AVS_PLANAR_A|AVS_PLANAR_ALIGNED,
+ AVS_PLANAR_R_ALIGNED=AVS_PLANAR_R|AVS_PLANAR_ALIGNED,
+ AVS_PLANAR_G_ALIGNED=AVS_PLANAR_G|AVS_PLANAR_ALIGNED,
+ 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 = 1 << 3,
+ AVS_CS_SHIFT_SAMPLE_BITS = 1 << 4,
+
+ 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_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 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_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
+};
+
+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_yv24(const AVS_VideoInfo * p)
+ { 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); }
+
+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); }
+
+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); }
+
+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_color_space(const AVS_VideoInfo * p, int c_space)
+ { return avs_is_planar(p) ? ((p->pixel_type & AVS_CS_PLANAR_MASK) == (c_space & AVS_CS_PLANAR_FILTER)) : ((p->pixel_type & c_space) == c_space); }
+
+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 {
+ BYTE * 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.
+ volatile long sequence_number;
+
+ volatile 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 {
+ 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;
+} 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_sizeUV;
+ else return 0;
+ case AVS_PLANAR_U_ALIGNED: case AVS_PLANAR_V_ALIGNED:
+ if (p->pitchUV) {
+ r = (p->row_sizeUV+AVS_FRAME_ALIGN-1)&(~(AVS_FRAME_ALIGN-1)); // Aligned rowsize
+ if (r < p->pitchUV)
+ return r;
+ return p->row_sizeUV;
+ } 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->heightUV;
+ return 0;
+ }
+ return p->height;}
+
+AVSC_INLINE const BYTE* avs_get_read_ptr(const AVS_VideoFrame * p) {
+ return p->vfb->data + p->offset;}
+
+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_is_writable(const AVS_VideoFrame * p) {
+ return (p->refcount == 1 && p->vfb->refcount == 1);}
+
+AVSC_INLINE BYTE* 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 BYTE* 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;
+ }
+ }
+}
+
+
+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 *);
+
+#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;
+ 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'; }
+
+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)
+ { 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 an 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
+//
+
+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, int frame_range);
+
+// 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.
+AVSC_API(AVS_Clip *, avs_new_c_filter)(AVS_ScriptEnvironment * e,
+ AVS_FilterInfo * * fi,
+ AVS_Value child, int store_child);
+
+/////////////////////////////////////////////////////////////////////
+//
+// 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)
+ AVS_CPUF_SSE3 = 0x100, // PIV+, K8 Venice
+ AVS_CPUF_SSSE3 = 0x200, // Core 2
+ AVS_CPUF_SSE4 = 0x400, // Penryn, Wolfdale, Yorkfield
+ AVS_CPUF_SSE4_1 = 0x400,
+ AVS_CPUF_SSE4_2 = 0x800, // Nehalem
+};
+
+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, void* 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
+
+#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
+
+
+AVSC_API(int, avs_make_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);
+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);
+
+// 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);
+
+
+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
+
+#ifdef AVSC_NO_DECLSPEC
+// use LoadLibrary and related functions to dynamically load Avisynth instead of declspec(dllimport)
+/*
+ The following functions needs to have been declared, probably from windows.h
+
+ void* malloc(size_t)
+ void free(void*);
+
+ HMODULE LoadLibrary(const char*);
+ void* GetProcAddress(HMODULE, const char*);
+ FreeLibrary(HMODULE);
+*/
+
+
+typedef struct AVS_Library AVS_Library;
+
+#define AVSC_DECLARE_FUNC(name) name##_func name
+
+struct AVS_Library {
+ HMODULE handle;
+
+ AVSC_DECLARE_FUNC(avs_add_function);
+ AVSC_DECLARE_FUNC(avs_at_exit);
+ AVSC_DECLARE_FUNC(avs_bit_blt);
+ AVSC_DECLARE_FUNC(avs_check_version);
+ AVSC_DECLARE_FUNC(avs_clip_get_error);
+ AVSC_DECLARE_FUNC(avs_copy_clip);
+ AVSC_DECLARE_FUNC(avs_copy_value);
+ AVSC_DECLARE_FUNC(avs_copy_video_frame);
+ AVSC_DECLARE_FUNC(avs_create_script_environment);
+ AVSC_DECLARE_FUNC(avs_delete_script_environment);
+ AVSC_DECLARE_FUNC(avs_function_exists);
+ AVSC_DECLARE_FUNC(avs_get_audio);
+ AVSC_DECLARE_FUNC(avs_get_cpu_flags);
+ AVSC_DECLARE_FUNC(avs_get_error);
+ AVSC_DECLARE_FUNC(avs_get_frame);
+ AVSC_DECLARE_FUNC(avs_get_parity);
+ AVSC_DECLARE_FUNC(avs_get_var);
+ AVSC_DECLARE_FUNC(avs_get_version);
+ AVSC_DECLARE_FUNC(avs_get_video_info);
+ AVSC_DECLARE_FUNC(avs_invoke);
+ AVSC_DECLARE_FUNC(avs_make_writable);
+ AVSC_DECLARE_FUNC(avs_new_c_filter);
+ AVSC_DECLARE_FUNC(avs_new_video_frame_a);
+ AVSC_DECLARE_FUNC(avs_release_clip);
+ AVSC_DECLARE_FUNC(avs_release_value);
+ AVSC_DECLARE_FUNC(avs_release_video_frame);
+ AVSC_DECLARE_FUNC(avs_save_string);
+ AVSC_DECLARE_FUNC(avs_set_cache_hints);
+ AVSC_DECLARE_FUNC(avs_set_global_var);
+ AVSC_DECLARE_FUNC(avs_set_memory_max);
+ AVSC_DECLARE_FUNC(avs_set_to_clip);
+ AVSC_DECLARE_FUNC(avs_set_var);
+ AVSC_DECLARE_FUNC(avs_set_working_dir);
+ AVSC_DECLARE_FUNC(avs_sprintf);
+ AVSC_DECLARE_FUNC(avs_subframe);
+ AVSC_DECLARE_FUNC(avs_subframe_planar);
+ AVSC_DECLARE_FUNC(avs_take_clip);
+ AVSC_DECLARE_FUNC(avs_vsprintf);
+};
+
+#undef AVSC_DECLARE_FUNC
+
+
+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");
+ if (library->handle == NULL)
+ goto fail;
+
+#define __AVSC_STRINGIFY(x) #x
+#define AVSC_STRINGIFY(x) __AVSC_STRINGIFY(x)
+#define AVSC_LOAD_FUNC(name) {\
+ library->name = (name##_func) GetProcAddress(library->handle, AVSC_STRINGIFY(name));\
+ if (library->name == NULL)\
+ goto fail;\
+}
+
+ AVSC_LOAD_FUNC(avs_add_function);
+ AVSC_LOAD_FUNC(avs_at_exit);
+ AVSC_LOAD_FUNC(avs_bit_blt);
+ AVSC_LOAD_FUNC(avs_check_version);
+ AVSC_LOAD_FUNC(avs_clip_get_error);
+ AVSC_LOAD_FUNC(avs_copy_clip);
+ AVSC_LOAD_FUNC(avs_copy_value);
+ AVSC_LOAD_FUNC(avs_copy_video_frame);
+ AVSC_LOAD_FUNC(avs_create_script_environment);
+ AVSC_LOAD_FUNC(avs_delete_script_environment);
+ AVSC_LOAD_FUNC(avs_function_exists);
+ AVSC_LOAD_FUNC(avs_get_audio);
+ AVSC_LOAD_FUNC(avs_get_cpu_flags);
+ AVSC_LOAD_FUNC(avs_get_error);
+ AVSC_LOAD_FUNC(avs_get_frame);
+ AVSC_LOAD_FUNC(avs_get_parity);
+ AVSC_LOAD_FUNC(avs_get_var);
+ AVSC_LOAD_FUNC(avs_get_version);
+ AVSC_LOAD_FUNC(avs_get_video_info);
+ AVSC_LOAD_FUNC(avs_invoke);
+ 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);
+ AVSC_LOAD_FUNC(avs_save_string);
+ AVSC_LOAD_FUNC(avs_set_cache_hints);
+ AVSC_LOAD_FUNC(avs_set_global_var);
+ AVSC_LOAD_FUNC(avs_set_memory_max);
+ AVSC_LOAD_FUNC(avs_set_to_clip);
+ AVSC_LOAD_FUNC(avs_set_var);
+ AVSC_LOAD_FUNC(avs_set_working_dir);
+ AVSC_LOAD_FUNC(avs_sprintf);
+ AVSC_LOAD_FUNC(avs_subframe);
+ AVSC_LOAD_FUNC(avs_subframe_planar);
+ AVSC_LOAD_FUNC(avs_take_clip);
+ AVSC_LOAD_FUNC(avs_vsprintf);
+
+#undef __AVSC_STRINGIFY
+#undef AVSC_STRINGIFY
+#undef AVSC_LOAD_FUNC
+
+ return library;
+
+fail:
+ free(library);
+ return NULL;
+}
+
+AVSC_INLINE void avs_free_library(AVS_Library *library) {
+ if (library == NULL)
+ return;
+ FreeLibrary(library->handle);
+ free(library);
+}
+#endif
+
+#endif
OSDN Git Service
