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  1. // Avisynth C Interface Version 0.20
  2. // Copyright 2003 Kevin Atkinson
  3.  
  4. // This program is free software; you can redistribute it and/or modify
  5. // it under the terms of the GNU General Public License as published by
  6. // the Free Software Foundation; either version 2 of the License, or
  7. // (at your option) any later version.
  8. //
  9. // This program is distributed in the hope that it will be useful,
  10. // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12. // GNU General Public License for more details.
  13. //
  14. // You should have received a copy of the GNU General Public License
  15. // along with this program; if not, write to the Free Software
  16. // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  17. // MA 02110-1301 USA, or visit
  18. // http://www.gnu.org/copyleft/gpl.html .
  19. //
  20. // As a special exception, I give you permission to link to the
  21. // Avisynth C interface with independent modules that communicate with
  22. // the Avisynth C interface solely through the interfaces defined in
  23. // avisynth_c.h, regardless of the license terms of these independent
  24. // modules, and to copy and distribute the resulting combined work
  25. // under terms of your choice, provided that every copy of the
  26. // combined work is accompanied by a complete copy of the source code
  27. // of the Avisynth C interface and Avisynth itself (with the version
  28. // used to produce the combined work), being distributed under the
  29. // terms of the GNU General Public License plus this exception.  An
  30. // independent module is a module which is not derived from or based
  31. // on Avisynth C Interface, such as 3rd-party filters, import and
  32. // export plugins, or graphical user interfaces.
  33.  
  34. #ifndef __AVXSYNTH_C__
  35. #define __AVXSYNTH_C__
  36.  
  37. #include "windowsPorts/windows2linux.h"
  38. #include <stdarg.h>
  39.  
  40. #ifdef __cplusplus
  41. #  define EXTERN_C extern "C"
  42. #else
  43. #  define EXTERN_C
  44. #endif
  45.  
  46. #define AVSC_USE_STDCALL 1
  47.  
  48. #ifndef AVSC_USE_STDCALL
  49. #  define AVSC_CC __cdecl
  50. #else
  51. #  define AVSC_CC __stdcall
  52. #endif
  53.  
  54. #define AVSC_INLINE static __inline
  55.  
  56. #ifdef AVISYNTH_C_EXPORTS
  57. #  define AVSC_EXPORT EXTERN_C
  58. #  define AVSC_API(ret, name) EXTERN_C __declspec(dllexport) ret AVSC_CC name
  59. #else
  60. #  define AVSC_EXPORT EXTERN_C __declspec(dllexport)
  61. #  ifndef AVSC_NO_DECLSPEC
  62. #    define AVSC_API(ret, name) EXTERN_C __declspec(dllimport) ret AVSC_CC name
  63. #  else
  64. #    define AVSC_API(ret, name) typedef ret (AVSC_CC *name##_func)
  65. #  endif
  66. #endif
  67.  
  68. #ifdef __GNUC__
  69. typedef long long int INT64;
  70. #else
  71. typedef __int64 INT64;
  72. #endif
  73.  
  74.  
  75. /////////////////////////////////////////////////////////////////////
  76. //
  77. // Constants
  78. //
  79.  
  80. #ifndef __AVXSYNTH_H__
  81. enum { AVISYNTH_INTERFACE_VERSION = 3 };
  82. #endif
  83.  
  84. enum {AVS_SAMPLE_INT8  = 1<<0,
  85.       AVS_SAMPLE_INT16 = 1<<1,
  86.       AVS_SAMPLE_INT24 = 1<<2,
  87.       AVS_SAMPLE_INT32 = 1<<3,
  88.       AVS_SAMPLE_FLOAT = 1<<4};
  89.  
  90. enum {AVS_PLANAR_Y=1<<0,
  91.       AVS_PLANAR_U=1<<1,
  92.       AVS_PLANAR_V=1<<2,
  93.       AVS_PLANAR_ALIGNED=1<<3,
  94.       AVS_PLANAR_Y_ALIGNED=AVS_PLANAR_Y|AVS_PLANAR_ALIGNED,
  95.       AVS_PLANAR_U_ALIGNED=AVS_PLANAR_U|AVS_PLANAR_ALIGNED,
  96.       AVS_PLANAR_V_ALIGNED=AVS_PLANAR_V|AVS_PLANAR_ALIGNED};
  97.  
  98.   // Colorspace properties.
  99. enum {AVS_CS_BGR = 1<<28,
  100.       AVS_CS_YUV = 1<<29,
  101.       AVS_CS_INTERLEAVED = 1<<30,
  102.       AVS_CS_PLANAR = 1<<31};
  103.  
  104.   // Specific colorformats
  105. enum {
  106.   AVS_CS_UNKNOWN = 0,
  107.   AVS_CS_BGR24 = 1<<0 | AVS_CS_BGR | AVS_CS_INTERLEAVED,
  108.   AVS_CS_BGR32 = 1<<1 | AVS_CS_BGR | AVS_CS_INTERLEAVED,
  109.   AVS_CS_YUY2 = 1<<2 | AVS_CS_YUV | AVS_CS_INTERLEAVED,
  110.   AVS_CS_YV12 = 1<<3 | AVS_CS_YUV | AVS_CS_PLANAR,  // y-v-u, planar
  111.   AVS_CS_I420 = 1<<4 | AVS_CS_YUV | AVS_CS_PLANAR,  // y-u-v, planar
  112.   AVS_CS_IYUV = 1<<4 | AVS_CS_YUV | AVS_CS_PLANAR  // same as above
  113. };
  114.  
  115. enum {
  116.   AVS_IT_BFF = 1<<0,
  117.   AVS_IT_TFF = 1<<1,
  118.   AVS_IT_FIELDBASED = 1<<2};
  119.  
  120. enum {
  121.   AVS_FILTER_TYPE=1,
  122.   AVS_FILTER_INPUT_COLORSPACE=2,
  123.   AVS_FILTER_OUTPUT_TYPE=9,
  124.   AVS_FILTER_NAME=4,
  125.   AVS_FILTER_AUTHOR=5,
  126.   AVS_FILTER_VERSION=6,
  127.   AVS_FILTER_ARGS=7,
  128.   AVS_FILTER_ARGS_INFO=8,
  129.   AVS_FILTER_ARGS_DESCRIPTION=10,
  130.   AVS_FILTER_DESCRIPTION=11};
  131.  
  132. enum {  //SUBTYPES
  133.   AVS_FILTER_TYPE_AUDIO=1,
  134.   AVS_FILTER_TYPE_VIDEO=2,
  135.   AVS_FILTER_OUTPUT_TYPE_SAME=3,
  136.   AVS_FILTER_OUTPUT_TYPE_DIFFERENT=4};
  137.  
  138. enum {
  139.   AVS_CACHE_NOTHING=0,
  140.   AVS_CACHE_RANGE=1,
  141.   AVS_CACHE_ALL=2,
  142.   AVS_CACHE_AUDIO=3,
  143.   AVS_CACHE_AUDIO_NONE=4,
  144.   AVS_CACHE_AUDIO_AUTO=5
  145. };
  146.  
  147. #define AVS_FRAME_ALIGN 16
  148.  
  149. typedef struct AVS_Clip AVS_Clip;
  150. typedef struct AVS_ScriptEnvironment AVS_ScriptEnvironment;
  151.  
  152. /////////////////////////////////////////////////////////////////////
  153. //
  154. // AVS_VideoInfo
  155. //
  156.  
  157. // AVS_VideoInfo is layed out identicly to VideoInfo
  158. typedef struct AVS_VideoInfo {
  159.   int width, height;    // width=0 means no video
  160.   unsigned fps_numerator, fps_denominator;
  161.   int num_frames;
  162.  
  163.   int pixel_type;
  164.  
  165.   int audio_samples_per_second;   // 0 means no audio
  166.   int sample_type;
  167.   INT64 num_audio_samples;
  168.   int nchannels;
  169.  
  170.   // Imagetype properties
  171.  
  172.   int image_type;
  173. } AVS_VideoInfo;
  174.  
  175. // useful functions of the above
  176. AVSC_INLINE int avs_has_video(const AVS_VideoInfo * p)
  177.         { return (p->width!=0); }
  178.  
  179. AVSC_INLINE int avs_has_audio(const AVS_VideoInfo * p)
  180.         { return (p->audio_samples_per_second!=0); }
  181.  
  182. AVSC_INLINE int avs_is_rgb(const AVS_VideoInfo * p)
  183.         { return !!(p->pixel_type&AVS_CS_BGR); }
  184.  
  185. AVSC_INLINE int avs_is_rgb24(const AVS_VideoInfo * p)
  186.         { return (p->pixel_type&AVS_CS_BGR24)==AVS_CS_BGR24; } // Clear out additional properties
  187.  
  188. AVSC_INLINE int avs_is_rgb32(const AVS_VideoInfo * p)
  189.         { return (p->pixel_type & AVS_CS_BGR32) == AVS_CS_BGR32 ; }
  190.  
  191. AVSC_INLINE int avs_is_yuv(const AVS_VideoInfo * p)
  192.         { return !!(p->pixel_type&AVS_CS_YUV ); }
  193.  
  194. AVSC_INLINE int avs_is_yuy2(const AVS_VideoInfo * p)
  195.         { return (p->pixel_type & AVS_CS_YUY2) == AVS_CS_YUY2; }
  196.  
  197. AVSC_INLINE int avs_is_yv12(const AVS_VideoInfo * p)
  198.         { return ((p->pixel_type & AVS_CS_YV12) == AVS_CS_YV12)||((p->pixel_type & AVS_CS_I420) == AVS_CS_I420); }
  199.  
  200. AVSC_INLINE int avs_is_color_space(const AVS_VideoInfo * p, int c_space)
  201.         { return ((p->pixel_type & c_space) == c_space); }
  202.  
  203. AVSC_INLINE int avs_is_property(const AVS_VideoInfo * p, int property)
  204.         { return ((p->pixel_type & property)==property ); }
  205.  
  206. AVSC_INLINE int avs_is_planar(const AVS_VideoInfo * p)
  207.         { return !!(p->pixel_type & AVS_CS_PLANAR); }
  208.  
  209. AVSC_INLINE int avs_is_field_based(const AVS_VideoInfo * p)
  210.         { return !!(p->image_type & AVS_IT_FIELDBASED); }
  211.  
  212. AVSC_INLINE int avs_is_parity_known(const AVS_VideoInfo * p)
  213.         { return ((p->image_type & AVS_IT_FIELDBASED)&&(p->image_type & (AVS_IT_BFF | AVS_IT_TFF))); }
  214.  
  215. AVSC_INLINE int avs_is_bff(const AVS_VideoInfo * p)
  216.         { return !!(p->image_type & AVS_IT_BFF); }
  217.  
  218. AVSC_INLINE int avs_is_tff(const AVS_VideoInfo * p)
  219.         { return !!(p->image_type & AVS_IT_TFF); }
  220.  
  221. AVSC_INLINE int avs_bits_per_pixel(const AVS_VideoInfo * p)
  222. {
  223.   switch (p->pixel_type) {
  224.       case AVS_CS_BGR24: return 24;
  225.       case AVS_CS_BGR32: return 32;
  226.       case AVS_CS_YUY2:  return 16;
  227.       case AVS_CS_YV12:
  228.       case AVS_CS_I420:  return 12;
  229.       default:           return 0;
  230.     }
  231. }
  232. AVSC_INLINE int avs_bytes_from_pixels(const AVS_VideoInfo * p, int pixels)
  233.         { return pixels * (avs_bits_per_pixel(p)>>3); }   // Will work on planar images, but will return only luma planes
  234.  
  235. AVSC_INLINE int avs_row_size(const AVS_VideoInfo * p)
  236.         { return avs_bytes_from_pixels(p,p->width); }  // Also only returns first plane on planar images
  237.  
  238. AVSC_INLINE int avs_bmp_size(const AVS_VideoInfo * vi)
  239.         { 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); }
  240.  
  241. AVSC_INLINE int avs_samples_per_second(const AVS_VideoInfo * p)
  242.         { return p->audio_samples_per_second; }
  243.  
  244.  
  245. AVSC_INLINE int avs_bytes_per_channel_sample(const AVS_VideoInfo * p)
  246. {
  247.     switch (p->sample_type) {
  248.       case AVS_SAMPLE_INT8:  return sizeof(signed char);
  249.       case AVS_SAMPLE_INT16: return sizeof(signed short);
  250.       case AVS_SAMPLE_INT24: return 3;
  251.       case AVS_SAMPLE_INT32: return sizeof(signed int);
  252.       case AVS_SAMPLE_FLOAT: return sizeof(float);
  253.       default: return 0;
  254.     }
  255. }
  256. AVSC_INLINE int avs_bytes_per_audio_sample(const AVS_VideoInfo * p)
  257.         { return p->nchannels*avs_bytes_per_channel_sample(p);}
  258.  
  259. AVSC_INLINE INT64 avs_audio_samples_from_frames(const AVS_VideoInfo * p, INT64 frames)
  260.         { return ((INT64)(frames) * p->audio_samples_per_second * p->fps_denominator / p->fps_numerator); }
  261.  
  262. AVSC_INLINE int avs_frames_from_audio_samples(const AVS_VideoInfo * p, INT64 samples)
  263.         { return (int)(samples * (INT64)p->fps_numerator / (INT64)p->fps_denominator / (INT64)p->audio_samples_per_second); }
  264.  
  265. AVSC_INLINE INT64 avs_audio_samples_from_bytes(const AVS_VideoInfo * p, INT64 bytes)
  266.         { return bytes / avs_bytes_per_audio_sample(p); }
  267.  
  268. AVSC_INLINE INT64 avs_bytes_from_audio_samples(const AVS_VideoInfo * p, INT64 samples)
  269.         { return samples * avs_bytes_per_audio_sample(p); }
  270.  
  271. AVSC_INLINE int avs_audio_channels(const AVS_VideoInfo * p)
  272.         { return p->nchannels; }
  273.  
  274. AVSC_INLINE int avs_sample_type(const AVS_VideoInfo * p)
  275.         { return p->sample_type;}
  276.  
  277. // useful mutator
  278. AVSC_INLINE void avs_set_property(AVS_VideoInfo * p, int property)
  279.         { p->image_type|=property; }
  280.  
  281. AVSC_INLINE void avs_clear_property(AVS_VideoInfo * p, int property)
  282.         { p->image_type&=~property; }
  283.  
  284. AVSC_INLINE void avs_set_field_based(AVS_VideoInfo * p, int isfieldbased)
  285.         { if (isfieldbased) p->image_type|=AVS_IT_FIELDBASED; else p->image_type&=~AVS_IT_FIELDBASED; }
  286.  
  287. AVSC_INLINE void avs_set_fps(AVS_VideoInfo * p, unsigned numerator, unsigned denominator)
  288. {
  289.     unsigned x=numerator, y=denominator;
  290.     while (y) {   // find gcd
  291.       unsigned t = x%y; x = y; y = t;
  292.     }
  293.     p->fps_numerator = numerator/x;
  294.     p->fps_denominator = denominator/x;
  295. }
  296.  
  297. AVSC_INLINE int avs_is_same_colorspace(AVS_VideoInfo * x, AVS_VideoInfo * y)
  298. {
  299.         return (x->pixel_type == y->pixel_type)
  300.                 || (avs_is_yv12(x) && avs_is_yv12(y));
  301. }
  302.  
  303. /////////////////////////////////////////////////////////////////////
  304. //
  305. // AVS_VideoFrame
  306. //
  307.  
  308. // VideoFrameBuffer holds information about a memory block which is used
  309. // for video data.  For efficiency, instances of this class are not deleted
  310. // when the refcount reaches zero; instead they're stored in a linked list
  311. // to be reused.  The instances are deleted when the corresponding AVS
  312. // file is closed.
  313.  
  314. // AVS_VideoFrameBuffer is layed out identicly to VideoFrameBuffer
  315. // DO NOT USE THIS STRUCTURE DIRECTLY
  316. typedef struct AVS_VideoFrameBuffer {
  317.   unsigned char * data;
  318.   int data_size;
  319.   // sequence_number is incremented every time the buffer is changed, so
  320.   // that stale views can tell they're no longer valid.
  321.   long sequence_number;
  322.  
  323.   long refcount;
  324. } AVS_VideoFrameBuffer;
  325.  
  326. // VideoFrame holds a "window" into a VideoFrameBuffer.
  327.  
  328. // AVS_VideoFrame is layed out identicly to IVideoFrame
  329. // DO NOT USE THIS STRUCTURE DIRECTLY
  330. typedef struct AVS_VideoFrame {
  331.   int refcount;
  332.   AVS_VideoFrameBuffer * vfb;
  333.   int offset, pitch, row_size, height, offsetU, offsetV, pitchUV;  // U&V offsets are from top of picture.
  334. } AVS_VideoFrame;
  335.  
  336. // Access functions for AVS_VideoFrame
  337. AVSC_INLINE int avs_get_pitch(const AVS_VideoFrame * p) {
  338.         return p->pitch;}
  339.  
  340. AVSC_INLINE int avs_get_pitch_p(const AVS_VideoFrame * p, int plane) {
  341.   switch (plane) {
  342.   case AVS_PLANAR_U: case AVS_PLANAR_V: return p->pitchUV;}
  343.   return p->pitch;}
  344.  
  345. AVSC_INLINE int avs_get_row_size(const AVS_VideoFrame * p) {
  346.         return p->row_size; }
  347.  
  348. AVSC_INLINE int avs_get_row_size_p(const AVS_VideoFrame * p, int plane) {
  349.         int r;
  350.     switch (plane) {
  351.     case AVS_PLANAR_U: case AVS_PLANAR_V:
  352.                 if (p->pitchUV) return p->row_size>>1;
  353.                 else            return 0;
  354.     case AVS_PLANAR_U_ALIGNED: case AVS_PLANAR_V_ALIGNED:
  355.                 if (p->pitchUV) {
  356.                         r = ((p->row_size+AVS_FRAME_ALIGN-1)&(~(AVS_FRAME_ALIGN-1)) )>>1; // Aligned rowsize
  357.                         if (r < p->pitchUV)
  358.                                 return r;
  359.                         return p->row_size>>1;
  360.                 } else return 0;
  361.     case AVS_PLANAR_Y_ALIGNED:
  362.                 r = (p->row_size+AVS_FRAME_ALIGN-1)&(~(AVS_FRAME_ALIGN-1)); // Aligned rowsize
  363.                 if (r <= p->pitch)
  364.                         return r;
  365.                 return p->row_size;
  366.     }
  367.     return p->row_size;
  368. }
  369.  
  370. AVSC_INLINE int avs_get_height(const AVS_VideoFrame * p) {
  371.         return p->height;}
  372.  
  373. AVSC_INLINE int avs_get_height_p(const AVS_VideoFrame * p, int plane) {
  374.         switch (plane) {
  375.                 case AVS_PLANAR_U: case AVS_PLANAR_V:
  376.                         if (p->pitchUV) return p->height>>1;
  377.                         return 0;
  378.         }
  379.         return p->height;}
  380.  
  381. AVSC_INLINE const unsigned char* avs_get_read_ptr(const AVS_VideoFrame * p) {
  382.         return p->vfb->data + p->offset;}
  383.  
  384. AVSC_INLINE const unsigned char* avs_get_read_ptr_p(const AVS_VideoFrame * p, int plane)
  385. {
  386.         switch (plane) {
  387.                 case AVS_PLANAR_U: return p->vfb->data + p->offsetU;
  388.                 case AVS_PLANAR_V: return p->vfb->data + p->offsetV;
  389.                 default:           return p->vfb->data + p->offset;}
  390. }
  391.  
  392. AVSC_INLINE int avs_is_writable(const AVS_VideoFrame * p) {
  393.         return (p->refcount == 1 && p->vfb->refcount == 1);}
  394.  
  395. AVSC_INLINE unsigned char* avs_get_write_ptr(const AVS_VideoFrame * p)
  396. {
  397.         if (avs_is_writable(p)) {
  398.                 ++p->vfb->sequence_number;
  399.                 return p->vfb->data + p->offset;
  400.         } else
  401.                 return 0;
  402. }
  403.  
  404. AVSC_INLINE unsigned char* avs_get_write_ptr_p(const AVS_VideoFrame * p, int plane)
  405. {
  406.         if (plane==AVS_PLANAR_Y && avs_is_writable(p)) {
  407.                 ++p->vfb->sequence_number;
  408.                 return p->vfb->data + p->offset;
  409.         } else if (plane==AVS_PLANAR_Y) {
  410.                 return 0;
  411.         } else {
  412.                 switch (plane) {
  413.                         case AVS_PLANAR_U: return p->vfb->data + p->offsetU;
  414.                         case AVS_PLANAR_V: return p->vfb->data + p->offsetV;
  415.                         default:       return p->vfb->data + p->offset;
  416.                 }
  417.         }
  418. }
  419.  
  420. #if defined __cplusplus
  421. extern "C"
  422. {
  423. #endif // __cplusplus
  424. AVSC_API(void, avs_release_video_frame)(AVS_VideoFrame *);
  425. // makes a shallow copy of a video frame
  426. AVSC_API(AVS_VideoFrame *, avs_copy_video_frame)(AVS_VideoFrame *);
  427. #if defined __cplusplus
  428. }
  429. #endif // __cplusplus
  430.  
  431. #ifndef AVSC_NO_DECLSPEC
  432. AVSC_INLINE void avs_release_frame(AVS_VideoFrame * f)
  433.   {avs_release_video_frame(f);}
  434. AVSC_INLINE AVS_VideoFrame * avs_copy_frame(AVS_VideoFrame * f)
  435.   {return avs_copy_video_frame(f);}
  436. #endif
  437.  
  438. /////////////////////////////////////////////////////////////////////
  439. //
  440. // AVS_Value
  441. //
  442.  
  443. // Treat AVS_Value as a fat pointer.  That is use avs_copy_value
  444. // and avs_release_value appropiaty as you would if AVS_Value was
  445. // a pointer.
  446.  
  447. // To maintain source code compatibility with future versions of the
  448. // avisynth_c API don't use the AVS_Value directly.  Use the helper
  449. // functions below.
  450.  
  451. // AVS_Value is layed out identicly to AVSValue
  452. typedef struct AVS_Value AVS_Value;
  453. struct AVS_Value {
  454.   short type;  // 'a'rray, 'c'lip, 'b'ool, 'i'nt, 'f'loat, 's'tring, 'v'oid, or 'l'ong
  455.                // for some function e'rror
  456.   short array_size;
  457.   union {
  458.     void * clip; // do not use directly, use avs_take_clip
  459.     char boolean;
  460.     int integer;
  461.     INT64 integer64; // match addition of __int64 to avxplugin.h
  462.     float floating_pt;
  463.     const char * string;
  464.     const AVS_Value * array;
  465.   } d;
  466. };
  467.  
  468. // AVS_Value should be initilized with avs_void.
  469. // Should also set to avs_void after the value is released
  470. // with avs_copy_value.  Consider it the equalvent of setting
  471. // a pointer to NULL
  472. static const AVS_Value avs_void = {'v'};
  473.  
  474. AVSC_API(void, avs_copy_value)(AVS_Value * dest, AVS_Value src);
  475. AVSC_API(void, avs_release_value)(AVS_Value);
  476.  
  477. AVSC_INLINE int avs_defined(AVS_Value v) { return v.type != 'v'; }
  478. AVSC_INLINE int avs_is_clip(AVS_Value v) { return v.type == 'c'; }
  479. AVSC_INLINE int avs_is_bool(AVS_Value v) { return v.type == 'b'; }
  480. AVSC_INLINE int avs_is_int(AVS_Value v) { return v.type == 'i'; }
  481. AVSC_INLINE int avs_is_float(AVS_Value v) { return v.type == 'f' || v.type == 'i'; }
  482. AVSC_INLINE int avs_is_string(AVS_Value v) { return v.type == 's'; }
  483. AVSC_INLINE int avs_is_array(AVS_Value v) { return v.type == 'a'; }
  484. AVSC_INLINE int avs_is_error(AVS_Value v) { return v.type == 'e'; }
  485.  
  486. #if defined __cplusplus
  487. extern "C"
  488. {
  489. #endif // __cplusplus
  490. AVSC_API(AVS_Clip *, avs_take_clip)(AVS_Value, AVS_ScriptEnvironment *);
  491. AVSC_API(void, avs_set_to_clip)(AVS_Value *, AVS_Clip *);
  492. #if defined __cplusplus
  493. }
  494. #endif // __cplusplus
  495.  
  496. AVSC_INLINE int avs_as_bool(AVS_Value v)
  497.         { return v.d.boolean; }
  498. AVSC_INLINE int avs_as_int(AVS_Value v)
  499.         { return v.d.integer; }
  500. AVSC_INLINE const char * avs_as_string(AVS_Value v)
  501.         { return avs_is_error(v) || avs_is_string(v) ? v.d.string : 0; }
  502. AVSC_INLINE double avs_as_float(AVS_Value v)
  503.         { return avs_is_int(v) ? v.d.integer : v.d.floating_pt; }
  504. AVSC_INLINE const char * avs_as_error(AVS_Value v)
  505.         { return avs_is_error(v) ? v.d.string : 0; }
  506. AVSC_INLINE const AVS_Value * avs_as_array(AVS_Value v)
  507.         { return v.d.array; }
  508. AVSC_INLINE int avs_array_size(AVS_Value v)
  509.         { return avs_is_array(v) ? v.array_size : 1; }
  510. AVSC_INLINE AVS_Value avs_array_elt(AVS_Value v, int index)
  511.         { return avs_is_array(v) ? v.d.array[index] : v; }
  512.  
  513. // only use these functions on am AVS_Value that does not already have
  514. // an active value.  Remember, treat AVS_Value as a fat pointer.
  515. AVSC_INLINE AVS_Value avs_new_value_bool(int v0)
  516.         { AVS_Value v = {0}; v.type = 'b'; v.d.boolean = v0 == 0 ? 0 : 1; return v; }
  517. AVSC_INLINE AVS_Value avs_new_value_int(int v0)
  518.         { AVS_Value v = {0}; v.type = 'i'; v.d.integer = v0; return v; }
  519. AVSC_INLINE AVS_Value avs_new_value_string(const char * v0)
  520.         { AVS_Value v = {0}; v.type = 's'; v.d.string = v0; return v; }
  521. AVSC_INLINE AVS_Value avs_new_value_float(float v0)
  522.         { AVS_Value v = {0}; v.type = 'f'; v.d.floating_pt = v0; return v;}
  523. AVSC_INLINE AVS_Value avs_new_value_error(const char * v0)
  524.         { AVS_Value v = {0}; v.type = 'e'; v.d.string = v0; return v; }
  525. #ifndef AVSC_NO_DECLSPEC
  526. AVSC_INLINE AVS_Value avs_new_value_clip(AVS_Clip * v0)
  527.         { AVS_Value v = {0}; avs_set_to_clip(&v, v0); return v; }
  528. #endif
  529. AVSC_INLINE AVS_Value avs_new_value_array(AVS_Value * v0, int size)
  530.         { AVS_Value v = {0}; v.type = 'a'; v.d.array = v0; v.array_size = size; return v; }
  531.  
  532. /////////////////////////////////////////////////////////////////////
  533. //
  534. // AVS_Clip
  535. //
  536. #if defined __cplusplus
  537. extern "C"
  538. {
  539. #endif // __cplusplus
  540. AVSC_API(void, avs_release_clip)(AVS_Clip *);
  541. AVSC_API(AVS_Clip *, avs_copy_clip)(AVS_Clip *);
  542.  
  543. AVSC_API(const char *, avs_clip_get_error)(AVS_Clip *); // return 0 if no error
  544.  
  545. AVSC_API(const AVS_VideoInfo *, avs_get_video_info)(AVS_Clip *);
  546.  
  547. AVSC_API(int, avs_get_version)(AVS_Clip *);
  548.  
  549. AVSC_API(AVS_VideoFrame *, avs_get_frame)(AVS_Clip *, int n);
  550. // The returned video frame must be released with avs_release_video_frame
  551.  
  552. AVSC_API(int, avs_get_parity)(AVS_Clip *, int n);
  553. // return field parity if field_based, else parity of first field in frame
  554.  
  555. AVSC_API(int, avs_get_audio)(AVS_Clip *, void * buf,
  556.                                   INT64 start, INT64 count);
  557. // start and count are in samples
  558.  
  559. AVSC_API(int, avs_set_cache_hints)(AVS_Clip *,
  560.                                         int cachehints, size_t frame_range);
  561. #if defined __cplusplus
  562. }
  563. #endif // __cplusplus
  564.  
  565. // This is the callback type used by avs_add_function
  566. typedef AVS_Value (AVSC_CC * AVS_ApplyFunc)
  567.                         (AVS_ScriptEnvironment *, AVS_Value args, void * user_data);
  568.  
  569. typedef struct AVS_FilterInfo AVS_FilterInfo;
  570. struct AVS_FilterInfo
  571. {
  572.   // these members should not be modified outside of the AVS_ApplyFunc callback
  573.   AVS_Clip * child;
  574.   AVS_VideoInfo vi;
  575.   AVS_ScriptEnvironment * env;
  576.   AVS_VideoFrame * (AVSC_CC * get_frame)(AVS_FilterInfo *, int n);
  577.   int (AVSC_CC * get_parity)(AVS_FilterInfo *, int n);
  578.   int (AVSC_CC * get_audio)(AVS_FilterInfo *, void * buf,
  579.                                   INT64 start, INT64 count);
  580.   int (AVSC_CC * set_cache_hints)(AVS_FilterInfo *, int cachehints,
  581.                                         int frame_range);
  582.   void (AVSC_CC * free_filter)(AVS_FilterInfo *);
  583.  
  584.   // Should be set when ever there is an error to report.
  585.   // It is cleared before any of the above methods are called
  586.   const char * error;
  587.   // this is to store whatever and may be modified at will
  588.   void * user_data;
  589. };
  590.  
  591. // Create a new filter
  592. // fi is set to point to the AVS_FilterInfo so that you can
  593. //   modify it once it is initilized.
  594. // store_child should generally be set to true.  If it is not
  595. //    set than ALL methods (the function pointers) must be defined
  596. // If it is set than you do not need to worry about freeing the child
  597. //    clip.
  598. #if defined __cplusplus
  599. extern "C"
  600. {
  601. #endif // __cplusplus
  602. AVSC_API(AVS_Clip *, avs_new_c_filter)(AVS_ScriptEnvironment * e,
  603.                                       AVS_FilterInfo * * fi,
  604.                                       AVS_Value child, int store_child);
  605. #if defined __cplusplus
  606. }
  607. #endif // __cplusplus
  608.  
  609.  
  610. /////////////////////////////////////////////////////////////////////
  611. //
  612. // AVS_ScriptEnvironment
  613. //
  614.  
  615. // For GetCPUFlags.  These are backwards-compatible with those in VirtualDub.
  616. enum {
  617.                                 /* slowest CPU to support extension */
  618.   AVS_CPU_FORCE        = 0x01,   // N/A
  619.   AVS_CPU_FPU          = 0x02,   // 386/486DX
  620.   AVS_CPU_MMX          = 0x04,   // P55C, K6, PII
  621.   AVS_CPU_INTEGER_SSE  = 0x08,   // PIII, Athlon
  622.   AVS_CPU_SSE          = 0x10,   // PIII, Athlon XP/MP
  623.   AVS_CPU_SSE2         = 0x20,   // PIV, Hammer
  624.   AVS_CPU_3DNOW        = 0x40,   // K6-2
  625.   AVS_CPU_3DNOW_EXT    = 0x80,   // Athlon
  626.   AVS_CPU_X86_64       = 0xA0,   // Hammer (note: equiv. to 3DNow + SSE2,
  627.                                  // which only Hammer will have anyway)
  628. };
  629.  
  630. #if defined __cplusplus
  631. extern "C"
  632. {
  633. #endif // __cplusplus
  634. AVSC_API(const char *, avs_get_error)(AVS_ScriptEnvironment *); // return 0 if no error
  635.  
  636. AVSC_API(long, avs_get_cpu_flags)(AVS_ScriptEnvironment *);
  637. AVSC_API(int, avs_check_version)(AVS_ScriptEnvironment *, int version);
  638.  
  639. AVSC_API(char *, avs_save_string)(AVS_ScriptEnvironment *, const char* s, int length);
  640. AVSC_API(char *, avs_sprintf)(AVS_ScriptEnvironment *, const char * fmt, ...);
  641.  
  642. AVSC_API(char *, avs_vsprintf)(AVS_ScriptEnvironment *, const char * fmt, va_list val);
  643.  // note: val is really a va_list; I hope everyone typedefs va_list to a pointer
  644.  
  645. AVSC_API(int, avs_add_function)(AVS_ScriptEnvironment *,
  646.                                      const char * name, const char * params,
  647.                                      AVS_ApplyFunc apply, void * user_data);
  648.  
  649. AVSC_API(int, avs_function_exists)(AVS_ScriptEnvironment *, const char * name);
  650.  
  651. AVSC_API(AVS_Value, avs_invoke)(AVS_ScriptEnvironment *, const char * name,
  652.                                AVS_Value args, const char** arg_names);
  653. // The returned value must be be released with avs_release_value
  654.  
  655. AVSC_API(AVS_Value, avs_get_var)(AVS_ScriptEnvironment *, const char* name);
  656. // The returned value must be be released with avs_release_value
  657.  
  658. AVSC_API(int, avs_set_var)(AVS_ScriptEnvironment *, const char* name, AVS_Value val);
  659.  
  660. AVSC_API(int, avs_set_global_var)(AVS_ScriptEnvironment *, const char* name, const AVS_Value val);
  661.  
  662. //void avs_push_context(AVS_ScriptEnvironment *, int level=0);
  663. //void avs_pop_context(AVS_ScriptEnvironment *);
  664.  
  665. AVSC_API(AVS_VideoFrame *, avs_new_video_frame_a)(AVS_ScriptEnvironment *,
  666.                                           const AVS_VideoInfo * vi, int align);
  667. // align should be at least 16
  668. #if defined __cplusplus
  669. }
  670. #endif // __cplusplus
  671.  
  672. #ifndef AVSC_NO_DECLSPEC
  673. AVSC_INLINE
  674. AVS_VideoFrame * avs_new_video_frame(AVS_ScriptEnvironment * env,
  675.                                      const AVS_VideoInfo * vi)
  676.   {return avs_new_video_frame_a(env,vi,AVS_FRAME_ALIGN);}
  677.  
  678. AVSC_INLINE
  679. AVS_VideoFrame * avs_new_frame(AVS_ScriptEnvironment * env,
  680.                                const AVS_VideoInfo * vi)
  681.   {return avs_new_video_frame_a(env,vi,AVS_FRAME_ALIGN);}
  682. #endif
  683.  
  684. #if defined __cplusplus
  685. extern "C"
  686. {
  687. #endif // __cplusplus
  688. AVSC_API(int, avs_make_writable)(AVS_ScriptEnvironment *, AVS_VideoFrame * * pvf);
  689.  
  690. 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);
  691.  
  692. typedef void (AVSC_CC *AVS_ShutdownFunc)(void* user_data, AVS_ScriptEnvironment * env);
  693. AVSC_API(void, avs_at_exit)(AVS_ScriptEnvironment *, AVS_ShutdownFunc function, void * user_data);
  694.  
  695. AVSC_API(AVS_VideoFrame *, avs_subframe)(AVS_ScriptEnvironment *, AVS_VideoFrame * src, int rel_offset, int new_pitch, int new_row_size, int new_height);
  696. // The returned video frame must be be released
  697.  
  698. AVSC_API(int, avs_set_memory_max)(AVS_ScriptEnvironment *, int mem);
  699.  
  700. AVSC_API(int, avs_set_working_dir)(AVS_ScriptEnvironment *, const char * newdir);
  701.  
  702. // avisynth.dll exports this; it's a way to use it as a library, without
  703. // writing an AVS script or without going through AVIFile.
  704. AVSC_API(AVS_ScriptEnvironment *, avs_create_script_environment)(int version);
  705. #if defined __cplusplus
  706. }
  707. #endif // __cplusplus
  708.  
  709. // this symbol is the entry point for the plugin and must
  710. // be defined
  711. AVSC_EXPORT
  712. const char * AVSC_CC avisynth_c_plugin_init(AVS_ScriptEnvironment* env);
  713.  
  714.  
  715. #if defined __cplusplus
  716. extern "C"
  717. {
  718. #endif // __cplusplus
  719. AVSC_API(void, avs_delete_script_environment)(AVS_ScriptEnvironment *);
  720.  
  721.  
  722. 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);
  723. // The returned video frame must be be released
  724. #if defined __cplusplus
  725. }
  726. #endif // __cplusplus
  727.  
  728. #endif //__AVXSYNTH_C__
  729.