--- /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.
+
+#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_EXPORT EXTERN_C __declspec(dllexport)
+#define AVSC_INLINE static __inline
+#ifdef AVISYNTH_C_EXPORTS
+# define AVSC_API(ret) EXTERN_C __declspec(dllexport) ret AVSC_CC
+#else
+# define AVSC_API(ret) EXTERN_C __declspec(dllimport) ret AVSC_CC
+#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 = 2 };
+#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 };
+
+#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 {
+ 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.
+ 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) {
+ int 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 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 *);
+
+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);}
+
+
+
+/////////////////////////////////////////////////////////////////////
+//
+// 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 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; }
+AVSC_INLINE AVS_Value avs_new_value_clip(AVS_Clip * v0)
+ { AVS_Value v; avs_set_to_clip(&v, v0); return v; }
+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)
+};
+
+
+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
+
+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);}
+
+
+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
+
+#endif
--- /dev/null
+/*****************************************************************************
+ * avs.c: x264 avisynth input module
+ *****************************************************************************
+ * Copyright (C) 2009 x264 project
+ *
+ * Authors: Steven Walters <kemuri9@gmail.com>
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
+ *****************************************************************************/
+
+#include "muxers.h"
+#include <windows.h>
+
+/* the AVS interface currently uses __declspec to link function declarations to their definitions in the dll.
+ this has a side effect of preventing program execution if the avisynth dll is not found,
+ so define __declspec(dllimport) to nothing and work around this */
+#undef __declspec
+#define __declspec(i)
+#undef EXTERN_C
+
+#ifdef HAVE_AVISYNTH_C_H
+#include <avisynth_c.h>
+#else
+#include "extras/avisynth_c.h"
+#endif
+
+/* AVS uses a versioned interface to control backwards compatibility */
+/* YV12 support is required */
+#define AVS_INTERFACE_YV12 2
+/* when AVS supports other planar colorspaces, a workaround is required */
+#define AVS_INTERFACE_OTHER_PLANAR 5
+
+/* maximum size of the sequence of filters to try on non script files */
+#define AVS_MAX_SEQUENCE 5
+
+#define LOAD_AVS_FUNC(name, continue_on_fail) \
+{\
+ h->func.name = (void*)GetProcAddress( h->library, #name );\
+ if( !continue_on_fail && !h->func.name )\
+ goto fail;\
+}
+
+typedef struct
+{
+ AVS_Clip *clip;
+ AVS_ScriptEnvironment *env;
+ HMODULE library;
+ /* declare function pointers for the utilized functions to be loaded without __declspec,
+ as the avisynth header does not compensate for this type of usage */
+ struct
+ {
+ const char *(__stdcall *avs_clip_get_error)( AVS_Clip *clip );
+ AVS_ScriptEnvironment *(__stdcall *avs_create_script_environment)( int version );
+ void (__stdcall *avs_delete_script_environment)( AVS_ScriptEnvironment *env );
+ AVS_VideoFrame *(__stdcall *avs_get_frame)( AVS_Clip *clip, int n );
+ int (__stdcall *avs_get_version)( AVS_Clip *clip );
+ const AVS_VideoInfo *(__stdcall *avs_get_video_info)( AVS_Clip *clip );
+ int (__stdcall *avs_function_exists)( AVS_ScriptEnvironment *env, const char *name );
+ AVS_Value (__stdcall *avs_invoke)( AVS_ScriptEnvironment *env, const char *name,
+ AVS_Value args, const char **arg_names );
+ void (__stdcall *avs_release_clip)( AVS_Clip *clip );
+ void (__stdcall *avs_release_value)( AVS_Value value );
+ void (__stdcall *avs_release_video_frame)( AVS_VideoFrame *frame );
+ AVS_Clip *(__stdcall *avs_take_clip)( AVS_Value, AVS_ScriptEnvironment *env );
+ } func;
+} avs_hnd_t;
+
+/* load the library and functions we require from it */
+static int avs_load_library( avs_hnd_t *h )
+{
+ h->library = LoadLibrary( "avisynth" );
+ if( !h->library )
+ return -1;
+ LOAD_AVS_FUNC( avs_clip_get_error, 0 );
+ LOAD_AVS_FUNC( avs_create_script_environment, 0 );
+ LOAD_AVS_FUNC( avs_delete_script_environment, 1 );
+ LOAD_AVS_FUNC( avs_get_frame, 0 );
+ LOAD_AVS_FUNC( avs_get_version, 0 );
+ LOAD_AVS_FUNC( avs_get_video_info, 0 );
+ LOAD_AVS_FUNC( avs_function_exists, 0 );
+ LOAD_AVS_FUNC( avs_invoke, 0 );
+ LOAD_AVS_FUNC( avs_release_clip, 0 );
+ LOAD_AVS_FUNC( avs_release_value, 0 );
+ LOAD_AVS_FUNC( avs_release_video_frame, 0 );
+ LOAD_AVS_FUNC( avs_take_clip, 0 );
+ return 0;
+fail:
+ FreeLibrary( h->library );
+ return -1;
+}
+
+/* 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, j;
+ const char *all_purpose[] = { "FFmpegSource2", "DSS2", "DirectShowSource", 0 };
+ if( !strcasecmp( filename_ext, "avi" ) )
+ filter[i++] = "AVISource";
+ if( !strcasecmp( filename_ext, "d2v" ) )
+ filter[i++] = "MPEG2Source";
+ if( !strcasecmp( filename_ext, "dga" ) )
+ filter[i++] = "AVCSource";
+ for( j = 0; all_purpose[j] && i < AVS_MAX_SEQUENCE; j++ )
+ filter[i++] = all_purpose[j];
+}
+
+static int open_file( char *psz_filename, hnd_t *p_handle, x264_param_t *p_param )
+{
+ FILE *fh = fopen( psz_filename, "r" );
+ if( !fh )
+ return -1;
+ else if( !x264_is_regular_file( fh ) )
+ {
+ fprintf( stderr, "avs [error]: AVS input is incompatible with non-regular file `%s'\n", psz_filename );
+ return -1;
+ }
+ fclose( fh );
+
+ avs_hnd_t *h = malloc( sizeof(avs_hnd_t) );
+ if( !h )
+ return -1;
+ if( avs_load_library( h ) )
+ {
+ fprintf( stderr, "avs [error]: failed to load avisynth\n" );
+ return -1;
+ }
+ h->env = h->func.avs_create_script_environment( AVS_INTERFACE_YV12 );
+ if( !h->env )
+ {
+ fprintf( stderr, "avs [error]: failed to initiate avisynth\n" );
+ return -1;
+ }
+ AVS_Value arg = avs_new_value_string( psz_filename );
+ AVS_Value res;
+ char *filename_ext = get_filename_extension( psz_filename );
+
+ if( !strcasecmp( filename_ext, "avs" ) )
+ {
+ res = h->func.avs_invoke( h->env, "Import", arg, NULL );
+ if( avs_is_error( res ) )
+ {
+ fprintf( stderr, "avs [error]: %s\n", avs_as_string( res ) );
+ return -1;
+ }
+ }
+ else /* non script file */
+ {
+ /* cycle through known source filters to find one that works */
+ const char *filter[AVS_MAX_SEQUENCE+1] = { 0 };
+ avs_build_filter_sequence( filename_ext, filter );
+ int i;
+ for( i = 0; filter[i]; i++ )
+ {
+ fprintf( stderr, "avs [info]: Trying %s... ", filter[i] );
+ if( !h->func.avs_function_exists( h->env, filter[i] ) )
+ {
+ fprintf( stderr, "not found\n" );
+ continue;
+ }
+ if( !strncasecmp( filter[i], "FFmpegSource", 12 ) )
+ {
+ fprintf( stderr, "Indexing... " );
+ fflush( stderr );
+ }
+ res = h->func.avs_invoke( h->env, filter[i], arg, NULL );
+ if( !avs_is_error( res ) )
+ {
+ fprintf( stderr, "succeeded\n" );
+ break;
+ }
+ fprintf( stderr, "failed\n" );
+ }
+ if( !filter[i] )
+ {
+ fprintf( stderr, "avs [error]: unable to find source filter to open `%s'\n", psz_filename );
+ return -1;
+ }
+ }
+ if( !avs_is_clip( res ) )
+ {
+ fprintf( stderr, "avs [error]: `%s' didn't return a video clip\n", psz_filename );
+ return -1;
+ }
+ h->clip = h->func.avs_take_clip( res, h->env );
+ int avs_version = h->func.avs_get_version( h->clip );
+ const AVS_VideoInfo *vi = h->func.avs_get_video_info( h->clip );
+ if( !avs_has_video( vi ) )
+ {
+ fprintf( stderr, "avs [error]: `%s' has no video data\n", psz_filename );
+ return -1;
+ }
+ if( vi->width&1 || vi->height&1 )
+ {
+ fprintf( stderr, "avs [error]: input clip width or height not divisible by 2 (%dx%d)\n",
+ vi->width, vi->height );
+ return -1;
+ }
+ /* always call ConvertToYV12 to convert non YV12 planar colorspaces to YV12 when user's AVS supports them,
+ as all planar colorspaces are flagged as YV12. If it is already YV12 in this case, the call does nothing */
+ if( !avs_is_yv12( vi ) || avs_version >= AVS_INTERFACE_OTHER_PLANAR )
+ {
+ h->func.avs_release_clip( h->clip );
+ fprintf( stderr, "avs [warning]: converting input clip to YV12\n" );
+ const char *arg_name[2] = { NULL, "interlaced" };
+ AVS_Value arg_arr[2] = { res, avs_new_value_bool( p_param->b_interlaced ) };
+ AVS_Value res2 = h->func.avs_invoke( h->env, "ConvertToYV12", avs_new_value_array( arg_arr, 2 ), arg_name );
+ if( avs_is_error( res2 ) )
+ {
+ fprintf( stderr, "avs [error]: Couldn't convert input clip to YV12\n" );
+ return -1;
+ }
+ h->clip = h->func.avs_take_clip( res2, h->env );
+ h->func.avs_release_value( res2 );
+ vi = h->func.avs_get_video_info( h->clip );
+ }
+ h->func.avs_release_value( res );
+
+ p_param->i_width = vi->width;
+ p_param->i_height = vi->height;
+ p_param->i_fps_num = vi->fps_numerator;
+ p_param->i_fps_den = vi->fps_denominator;
+ p_param->i_csp = X264_CSP_YV12;
+
+ fprintf( stderr, "avs [info]: %dx%d @ %.2f fps (%d frames)\n",
+ p_param->i_width, p_param->i_height,
+ (double)p_param->i_fps_num / p_param->i_fps_den,
+ vi->num_frames );
+
+ *p_handle = h;
+ return 0;
+}
+
+static int get_frame_total( hnd_t handle )
+{
+ avs_hnd_t *h = handle;
+ const AVS_VideoInfo *vi = h->func.avs_get_video_info( h->clip );
+ return vi->num_frames;
+}
+
+static int picture_alloc( x264_picture_t *pic, int i_csp, int i_width, int i_height )
+{
+ pic->img.i_csp = i_csp;
+ pic->img.i_plane = 3;
+ pic->param = NULL;
+ return 0;
+}
+
+static int read_frame( x264_picture_t *p_pic, hnd_t handle, int i_frame )
+{
+ static int plane[3] = { AVS_PLANAR_Y, AVS_PLANAR_V, AVS_PLANAR_U };
+ avs_hnd_t *h = handle;
+ AVS_VideoFrame *frm =
+ p_pic->opaque = h->func.avs_get_frame( h->clip, i_frame );
+ int i;
+ const char *err = h->func.avs_clip_get_error( h->clip );
+ if( err )
+ {
+ fprintf( stderr, "avs [error]: %s occurred while reading frame %d\n", err, i_frame );
+ return -1;
+ }
+ for( i = 0; i < 3; i++ )
+ {
+ /* explicitly cast away the const attribute to avoid a warning */
+ p_pic->img.plane[i] = (uint8_t*)avs_get_read_ptr_p( frm, plane[i] );
+ p_pic->img.i_stride[i] = avs_get_pitch_p( frm, plane[i] );
+ }
+ return 0;
+}
+
+static int release_frame( x264_picture_t *pic, hnd_t handle )
+{
+ avs_hnd_t *h = handle;
+ h->func.avs_release_video_frame( pic->opaque );
+ return 0;
+}
+
+static void picture_clean( x264_picture_t *pic )
+{
+ memset( pic, 0, sizeof(x264_picture_t) );
+}
+
+static int close_file( hnd_t handle )
+{
+ avs_hnd_t *h = handle;
+ h->func.avs_release_clip( h->clip );
+ if( h->func.avs_delete_script_environment )
+ h->func.avs_delete_script_environment( h->env );
+ FreeLibrary( h->library );
+ free( h );
+ return 0;
+}
+
+cli_input_t avs_input = { open_file, get_frame_total, picture_alloc, read_frame, release_frame, picture_clean, close_file };
projects / x264 / commitdiff