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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., 675 Mass Ave, Cambridge, MA 02139, USA, or visit
  17. // http://www.gnu.org/copyleft/gpl.html .
  18. //
  19. // As a special exception, I give you permission to link to the
  20. // Avisynth C interface with independent modules that communicate with
  21. // the Avisynth C interface solely through the interfaces defined in
  22. // avisynth_c.h, regardless of the license terms of these independent
  23. // modules, and to copy and distribute the resulting combined work
  24. // under terms of your choice, provided that every copy of the
  25. // combined work is accompanied by a complete copy of the source code
  26. // of the Avisynth C interface and Avisynth itself (with the version
  27. // used to produce the combined work), being distributed under the
  28. // terms of the GNU General Public License plus this exception.  An
  29. // independent module is a module which is not derived from or based
  30. // on Avisynth C Interface, such as 3rd-party filters, import and
  31. // export plugins, or graphical user interfaces.
  32.  
  33. #ifndef __AVXSYNTH_C__
  34. #define __AVXSYNTH_C__
  35.  
  36. #include "windowsPorts/windows2linux.h"
  37. #include <stdarg.h>
  38.  
  39. #ifdef __cplusplus
  40. #  define EXTERN_C extern "C"
  41. #else
  42. #  define EXTERN_C
  43. #endif
  44.  
  45. #define AVSC_USE_STDCALL 1
  46.  
  47. #ifndef AVSC_USE_STDCALL
  48. #  define AVSC_CC __cdecl
  49. #else
  50. #  define AVSC_CC __stdcall
  51. #endif
  52.  
  53. #define AVSC_INLINE static __inline
  54.  
  55. #ifdef AVISYNTH_C_EXPORTS
  56. #  define AVSC_EXPORT EXTERN_C
  57. #  define AVSC_API(ret, name) EXTERN_C __declspec(dllexport) ret AVSC_CC name
  58. #else
  59. #  define AVSC_EXPORT EXTERN_C __declspec(dllexport)
  60. #  ifndef AVSC_NO_DECLSPEC
  61. #    define AVSC_API(ret, name) EXTERN_C __declspec(dllimport) ret AVSC_CC name
  62. #  else
  63. #    define AVSC_API(ret, name) typedef ret (AVSC_CC *name##_func)
  64. #  endif
  65. #endif
  66.  
  67. #ifdef __GNUC__
  68. typedef long long int INT64;
  69. #else
  70. typedef __int64 INT64;
  71. #endif
  72.  
  73.  
  74. /////////////////////////////////////////////////////////////////////
  75. //
  76. // Constants
  77. //
  78.  
  79. #ifndef __AVXSYNTH_H__
  80. enum { AVISYNTH_INTERFACE_VERSION = 3 };
  81. #endif
  82.  
  83. enum {AVS_SAMPLE_INT8  = 1<<0,
  84.       AVS_SAMPLE_INT16 = 1<<1,
  85.       AVS_SAMPLE_INT24 = 1<<2,
  86.       AVS_SAMPLE_INT32 = 1<<3,
  87.       AVS_SAMPLE_FLOAT = 1<<4};
  88.  
  89. enum {AVS_PLANAR_Y=1<<0,
  90.       AVS_PLANAR_U=1<<1,
  91.       AVS_PLANAR_V=1<<2,
  92.       AVS_PLANAR_ALIGNED=1<<3,
  93.       AVS_PLANAR_Y_ALIGNED=AVS_PLANAR_Y|AVS_PLANAR_ALIGNED,
  94.       AVS_PLANAR_U_ALIGNED=AVS_PLANAR_U|AVS_PLANAR_ALIGNED,
  95.       AVS_PLANAR_V_ALIGNED=AVS_PLANAR_V|AVS_PLANAR_ALIGNED};
  96.  
  97.   // Colorspace properties.
  98. enum {AVS_CS_BGR = 1<<28,
  99.       AVS_CS_YUV = 1<<29,
  100.       AVS_CS_INTERLEAVED = 1<<30,
  101.       AVS_CS_PLANAR = 1<<31};
  102.  
  103.   // Specific colorformats
  104. enum {
  105.   AVS_CS_UNKNOWN = 0,
  106.   AVS_CS_BGR24 = 1<<0 | AVS_CS_BGR | AVS_CS_INTERLEAVED,
  107.   AVS_CS_BGR32 = 1<<1 | AVS_CS_BGR | AVS_CS_INTERLEAVED,
  108.   AVS_CS_YUY2 = 1<<2 | AVS_CS_YUV | AVS_CS_INTERLEAVED,
  109.   AVS_CS_YV12 = 1<<3 | AVS_CS_YUV | AVS_CS_PLANAR,  // y-v-u, planar
  110.   AVS_CS_I420 = 1<<4 | AVS_CS_YUV | AVS_CS_PLANAR,  // y-u-v, planar
  111.   AVS_CS_IYUV = 1<<4 | AVS_CS_YUV | AVS_CS_PLANAR  // same as above
  112. };
  113.  
  114. enum {
  115.   AVS_IT_BFF = 1<<0,
  116.   AVS_IT_TFF = 1<<1,
  117.   AVS_IT_FIELDBASED = 1<<2};
  118.  
  119. enum {
  120.   AVS_FILTER_TYPE=1,
  121.   AVS_FILTER_INPUT_COLORSPACE=2,
  122.   AVS_FILTER_OUTPUT_TYPE=9,
  123.   AVS_FILTER_NAME=4,
  124.   AVS_FILTER_AUTHOR=5,
  125.   AVS_FILTER_VERSION=6,
  126.   AVS_FILTER_ARGS=7,
  127.   AVS_FILTER_ARGS_INFO=8,
  128.   AVS_FILTER_ARGS_DESCRIPTION=10,
  129.   AVS_FILTER_DESCRIPTION=11};
  130.  
  131. enum {  //SUBTYPES
  132.   AVS_FILTER_TYPE_AUDIO=1,
  133.   AVS_FILTER_TYPE_VIDEO=2,
  134.   AVS_FILTER_OUTPUT_TYPE_SAME=3,
  135.   AVS_FILTER_OUTPUT_TYPE_DIFFERENT=4};
  136.  
  137. enum {
  138.   AVS_CACHE_NOTHING=0,
  139.   AVS_CACHE_RANGE=1,
  140.   AVS_CACHE_ALL=2,
  141.   AVS_CACHE_AUDIO=3,
  142.   AVS_CACHE_AUDIO_NONE=4,
  143.   AVS_CACHE_AUDIO_AUTO=5
  144. };
  145.  
  146. #define AVS_FRAME_ALIGN 16
  147.  
  148. typedef struct AVS_Clip AVS_Clip;
  149. typedef struct AVS_ScriptEnvironment AVS_ScriptEnvironment;
  150.  
  151. /////////////////////////////////////////////////////////////////////
  152. //
  153. // AVS_VideoInfo
  154. //
  155.  
  156. // AVS_VideoInfo is layed out identicly to VideoInfo
  157. typedef struct AVS_VideoInfo {
  158.   int width, height;    // width=0 means no video
  159.   unsigned fps_numerator, fps_denominator;
  160.   int num_frames;
  161.  
  162.   int pixel_type;
  163.  
  164.   int audio_samples_per_second;   // 0 means no audio
  165.   int sample_type;
  166.   INT64 num_audio_samples;
  167.   int nchannels;
  168.  
  169.   // Imagetype properties
  170.  
  171.   int image_type;
  172. } AVS_VideoInfo;
  173.  
  174. // useful functions of the above
  175. AVSC_INLINE int avs_has_video(const AVS_VideoInfo * p)
  176.         { return (p->width!=0); }
  177.  
  178. AVSC_INLINE int avs_has_audio(const AVS_VideoInfo * p)
  179.         { return (p->audio_samples_per_second!=0); }
  180.  
  181. AVSC_INLINE int avs_is_rgb(const AVS_VideoInfo * p)
  182.         { return !!(p->pixel_type&AVS_CS_BGR); }
  183.  
  184. AVSC_INLINE int avs_is_rgb24(const AVS_VideoInfo * p)
  185.         { return (p->pixel_type&AVS_CS_BGR24)==AVS_CS_BGR24; } // Clear out additional properties
  186.  
  187. AVSC_INLINE int avs_is_rgb32(const AVS_VideoInfo * p)
  188.         { return (p->pixel_type & AVS_CS_BGR32) == AVS_CS_BGR32 ; }
  189.  
  190. AVSC_INLINE int avs_is_yuv(const AVS_VideoInfo * p)
  191.         { return !!(p->pixel_type&AVS_CS_YUV ); }
  192.  
  193. AVSC_INLINE int avs_is_yuy2(const AVS_VideoInfo * p)
  194.         { return (p->pixel_type & AVS_CS_YUY2) == AVS_CS_YUY2; }
  195.  
  196. AVSC_INLINE int avs_is_yv12(const AVS_VideoInfo * p)
  197.         { return ((p->pixel_type & AVS_CS_YV12) == AVS_CS_YV12)||((p->pixel_type & AVS_CS_I420) == AVS_CS_I420); }
  198.  
  199. AVSC_INLINE int avs_is_color_space(const AVS_VideoInfo * p, int c_space)
  200.         { return ((p->pixel_type & c_space) == c_space); }
  201.  
  202. AVSC_INLINE int avs_is_property(const AVS_VideoInfo * p, int property)
  203.         { return ((p->pixel_type & property)==property ); }
  204.  
  205. AVSC_INLINE int avs_is_planar(const AVS_VideoInfo * p)
  206.         { return !!(p->pixel_type & AVS_CS_PLANAR); }
  207.  
  208. AVSC_INLINE int avs_is_field_based(const AVS_VideoInfo * p)
  209.         { return !!(p->image_type & AVS_IT_FIELDBASED); }
  210.  
  211. AVSC_INLINE int avs_is_parity_known(const AVS_VideoInfo * p)
  212.         { return ((p->image_type & AVS_IT_FIELDBASED)&&(p->image_type & (AVS_IT_BFF | AVS_IT_TFF))); }
  213.  
  214. AVSC_INLINE int avs_is_bff(const AVS_VideoInfo * p)
  215.         { return !!(p->image_type & AVS_IT_BFF); }
  216.  
  217. AVSC_INLINE int avs_is_tff(const AVS_VideoInfo * p)
  218.         { return !!(p->image_type & AVS_IT_TFF); }
  219.  
  220. AVSC_INLINE int avs_bits_per_pixel(const AVS_VideoInfo * p)
  221. {
  222.   switch (p->pixel_type) {
  223.       case AVS_CS_BGR24: return 24;
  224.       case AVS_CS_BGR32: return 32;
  225.       case AVS_CS_YUY2:  return 16;
  226.       case AVS_CS_YV12:
  227.       case AVS_CS_I420:  return 12;
  228.       default:           return 0;
  229.     }
  230. }
  231. AVSC_INLINE int avs_bytes_from_pixels(const AVS_VideoInfo * p, int pixels)
  232.         { return pixels * (avs_bits_per_pixel(p)>>3); }   // Will work on planar images, but will return only luma planes
  233.  
  234. AVSC_INLINE int avs_row_size(const AVS_VideoInfo * p)
  235.         { return avs_bytes_from_pixels(p,p->width); }  // Also only returns first plane on planar images
  236.  
  237. AVSC_INLINE int avs_bmp_size(const AVS_VideoInfo * vi)
  238.         { 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); }
  239.  
  240. AVSC_INLINE int avs_samples_per_second(const AVS_VideoInfo * p)
  241.         { return p->audio_samples_per_second; }
  242.  
  243.  
  244. AVSC_INLINE int avs_bytes_per_channel_sample(const AVS_VideoInfo * p)
  245. {
  246.     switch (p->sample_type) {
  247.       case AVS_SAMPLE_INT8:  return sizeof(signed char);
  248.       case AVS_SAMPLE_INT16: return sizeof(signed short);
  249.       case AVS_SAMPLE_INT24: return 3;
  250.       case AVS_SAMPLE_INT32: return sizeof(signed int);
  251.       case AVS_SAMPLE_FLOAT: return sizeof(float);
  252.       default: return 0;
  253.     }
  254. }
  255. AVSC_INLINE int avs_bytes_per_audio_sample(const AVS_VideoInfo * p)
  256.         { return p->nchannels*avs_bytes_per_channel_sample(p);}
  257.  
  258. AVSC_INLINE INT64 avs_audio_samples_from_frames(const AVS_VideoInfo * p, INT64 frames)
  259.         { return ((INT64)(frames) * p->audio_samples_per_second * p->fps_denominator / p->fps_numerator); }
  260.  
  261. AVSC_INLINE int avs_frames_from_audio_samples(const AVS_VideoInfo * p, INT64 samples)
  262.         { return (int)(samples * (INT64)p->fps_numerator / (INT64)p->fps_denominator / (INT64)p->audio_samples_per_second); }
  263.  
  264. AVSC_INLINE INT64 avs_audio_samples_from_bytes(const AVS_VideoInfo * p, INT64 bytes)
  265.         { return bytes / avs_bytes_per_audio_sample(p); }
  266.  
  267. AVSC_INLINE INT64 avs_bytes_from_audio_samples(const AVS_VideoInfo * p, INT64 samples)
  268.         { return samples * avs_bytes_per_audio_sample(p); }
  269.  
  270. AVSC_INLINE int avs_audio_channels(const AVS_VideoInfo * p)
  271.         { return p->nchannels; }
  272.  
  273. AVSC_INLINE int avs_sample_type(const AVS_VideoInfo * p)
  274.         { return p->sample_type;}
  275.  
  276. // useful mutator
  277. AVSC_INLINE void avs_set_property(AVS_VideoInfo * p, int property)
  278.         { p->image_type|=property; }
  279.  
  280. AVSC_INLINE void avs_clear_property(AVS_VideoInfo * p, int property)
  281.         { p->image_type&=~property; }
  282.  
  283. AVSC_INLINE void avs_set_field_based(AVS_VideoInfo * p, int isfieldbased)
  284.         { if (isfieldbased) p->image_type|=AVS_IT_FIELDBASED; else p->image_type&=~AVS_IT_FIELDBASED; }
  285.  
  286. AVSC_INLINE void avs_set_fps(AVS_VideoInfo * p, unsigned numerator, unsigned denominator)
  287. {
  288.     unsigned x=numerator, y=denominator;
  289.     while (y) {   // find gcd
  290.       unsigned t = x%y; x = y; y = t;
  291.     }
  292.     p->fps_numerator = numerator/x;
  293.     p->fps_denominator = denominator/x;
  294. }
  295.  
  296. AVSC_INLINE int avs_is_same_colorspace(AVS_VideoInfo * x, AVS_VideoInfo * y)
  297. {
  298.         return (x->pixel_type == y->pixel_type)
  299.                 || (avs_is_yv12(x) && avs_is_yv12(y));
  300. }
  301.  
  302. /////////////////////////////////////////////////////////////////////
  303. //
  304. // AVS_VideoFrame
  305. //
  306.  
  307. // VideoFrameBuffer holds information about a memory block which is used
  308. // for video data.  For efficiency, instances of this class are not deleted
  309. // when the refcount reaches zero; instead they're stored in a linked list
  310. // to be reused.  The instances are deleted when the corresponding AVS
  311. // file is closed.
  312.  
  313. // AVS_VideoFrameBuffer is layed out identicly to VideoFrameBuffer
  314. // DO NOT USE THIS STRUCTURE DIRECTLY
  315. typedef struct AVS_VideoFrameBuffer {
  316.   unsigned char * data;
  317.   int data_size;
  318.   // sequence_number is incremented every time the buffer is changed, so
  319.   // that stale views can tell they're no longer valid.
  320.   long sequence_number;
  321.  
  322.   long refcount;
  323. } AVS_VideoFrameBuffer;
  324.  
  325. // VideoFrame holds a "window" into a VideoFrameBuffer.
  326.  
  327. // AVS_VideoFrame is layed out identicly to IVideoFrame
  328. // DO NOT USE THIS STRUCTURE DIRECTLY
  329. typedef struct AVS_VideoFrame {
  330.   int refcount;
  331.   AVS_VideoFrameBuffer * vfb;
  332.   int offset, pitch, row_size, height, offsetU, offsetV, pitchUV;  // U&V offsets are from top of picture.
  333. } AVS_VideoFrame;
  334.  
  335. // Access functions for AVS_VideoFrame
  336. AVSC_INLINE int avs_get_pitch(const AVS_VideoFrame * p) {
  337.         return p->pitch;}
  338.  
  339. AVSC_INLINE int avs_get_pitch_p(const AVS_VideoFrame * p, int plane) {
  340.   switch (plane) {
  341.   case AVS_PLANAR_U: case AVS_PLANAR_V: return p->pitchUV;}
  342.   return p->pitch;}
  343.  
  344. AVSC_INLINE int avs_get_row_size(const AVS_VideoFrame * p) {
  345.         return p->row_size; }
  346.  
  347. AVSC_INLINE int avs_get_row_size_p(const AVS_VideoFrame * p, int plane) {
  348.         int r;
  349.     switch (plane) {
  350.     case AVS_PLANAR_U: case AVS_PLANAR_V:
  351.                 if (p->pitchUV) return p->row_size>>1;
  352.                 else            return 0;
  353.     case AVS_PLANAR_U_ALIGNED: case AVS_PLANAR_V_ALIGNED:
  354.                 if (p->pitchUV) {
  355.                         r = ((p->row_size+AVS_FRAME_ALIGN-1)&(~(AVS_FRAME_ALIGN-1)) )>>1; // Aligned rowsize
  356.                         if (r < p->pitchUV)
  357.                                 return r;
  358.                         return p->row_size>>1;
  359.                 } else return 0;
  360.     case AVS_PLANAR_Y_ALIGNED:
  361.                 r = (p->row_size+AVS_FRAME_ALIGN-1)&(~(AVS_FRAME_ALIGN-1)); // Aligned rowsize
  362.                 if (r <= p->pitch)
  363.                         return r;
  364.                 return p->row_size;
  365.     }
  366.     return p->row_size;
  367. }
  368.  
  369. AVSC_INLINE int avs_get_height(const AVS_VideoFrame * p) {
  370.         return p->height;}
  371.  
  372. AVSC_INLINE int avs_get_height_p(const AVS_VideoFrame * p, int plane) {
  373.         switch (plane) {
  374.                 case AVS_PLANAR_U: case AVS_PLANAR_V:
  375.                         if (p->pitchUV) return p->height>>1;
  376.                         return 0;
  377.         }
  378.         return p->height;}
  379.  
  380. AVSC_INLINE const unsigned char* avs_get_read_ptr(const AVS_VideoFrame * p) {
  381.         return p->vfb->data + p->offset;}
  382.  
  383. AVSC_INLINE const unsigned char* avs_get_read_ptr_p(const AVS_VideoFrame * p, int plane)
  384. {
  385.         switch (plane) {
  386.                 case AVS_PLANAR_U: return p->vfb->data + p->offsetU;
  387.                 case AVS_PLANAR_V: return p->vfb->data + p->offsetV;
  388.                 default:           return p->vfb->data + p->offset;}
  389. }
  390.  
  391. AVSC_INLINE int avs_is_writable(const AVS_VideoFrame * p) {
  392.         return (p->refcount == 1 && p->vfb->refcount == 1);}
  393.  
  394. AVSC_INLINE unsigned char* avs_get_write_ptr(const AVS_VideoFrame * p)
  395. {
  396.         if (avs_is_writable(p)) {
  397.                 ++p->vfb->sequence_number;
  398.                 return p->vfb->data + p->offset;
  399.         } else
  400.                 return 0;
  401. }
  402.  
  403. AVSC_INLINE unsigned char* avs_get_write_ptr_p(const AVS_VideoFrame * p, int plane)
  404. {
  405.         if (plane==AVS_PLANAR_Y && avs_is_writable(p)) {
  406.                 ++p->vfb->sequence_number;
  407.                 return p->vfb->data + p->offset;
  408.         } else if (plane==AVS_PLANAR_Y) {
  409.                 return 0;
  410.         } else {
  411.                 switch (plane) {
  412.                         case AVS_PLANAR_U: return p->vfb->data + p->offsetU;
  413.                         case AVS_PLANAR_V: return p->vfb->data + p->offsetV;
  414.                         default:       return p->vfb->data + p->offset;
  415.                 }
  416.         }
  417. }
  418.  
  419. #if defined __cplusplus
  420. extern "C"
  421. {
  422. #endif // __cplusplus
  423. AVSC_API(void, avs_release_video_frame)(AVS_VideoFrame *);
  424. // makes a shallow copy of a video frame
  425. AVSC_API(AVS_VideoFrame *, avs_copy_video_frame)(AVS_VideoFrame *);
  426. #if defined __cplusplus
  427. }
  428. #endif // __cplusplus
  429.  
  430. #ifndef AVSC_NO_DECLSPEC
  431. AVSC_INLINE void avs_release_frame(AVS_VideoFrame * f)
  432.   {avs_release_video_frame(f);}
  433. AVSC_INLINE AVS_VideoFrame * avs_copy_frame(AVS_VideoFrame * f)
  434.   {return avs_copy_video_frame(f);}
  435. #endif
  436.  
  437. /////////////////////////////////////////////////////////////////////
  438. //
  439. // AVS_Value
  440. //
  441.  
  442. // Treat AVS_Value as a fat pointer.  That is use avs_copy_value
  443. // and avs_release_value appropiaty as you would if AVS_Value was
  444. // a pointer.
  445.  
  446. // To maintain source code compatibility with future versions of the
  447. // avisynth_c API don't use the AVS_Value directly.  Use the helper
  448. // functions below.
  449.  
  450. // AVS_Value is layed out identicly to AVSValue
  451. typedef struct AVS_Value AVS_Value;
  452. struct AVS_Value {
  453.   short type;  // 'a'rray, 'c'lip, 'b'ool, 'i'nt, 'f'loat, 's'tring, 'v'oid, or 'l'ong
  454.                // for some function e'rror
  455.   short array_size;
  456.   union {
  457.     void * clip; // do not use directly, use avs_take_clip
  458.     char boolean;
  459.     int integer;
  460.     INT64 integer64; // match addition of __int64 to avxplugin.h
  461.     float floating_pt;
  462.     const char * string;
  463.     const AVS_Value * array;
  464.   } d;
  465. };
  466.  
  467. // AVS_Value should be initilized with avs_void.
  468. // Should also set to avs_void after the value is released
  469. // with avs_copy_value.  Consider it the equalvent of setting
  470. // a pointer to NULL
  471. static const AVS_Value avs_void = {'v'};
  472.  
  473. AVSC_API(void, avs_copy_value)(AVS_Value * dest, AVS_Value src);
  474. AVSC_API(void, avs_release_value)(AVS_Value);
  475.  
  476. AVSC_INLINE int avs_defined(AVS_Value v) { return v.type != 'v'; }
  477. AVSC_INLINE int avs_is_clip(AVS_Value v) { return v.type == 'c'; }
  478. AVSC_INLINE int avs_is_bool(AVS_Value v) { return v.type == 'b'; }
  479. AVSC_INLINE int avs_is_int(AVS_Value v) { return v.type == 'i'; }
  480. AVSC_INLINE int avs_is_float(AVS_Value v) { return v.type == 'f' || v.type == 'i'; }
  481. AVSC_INLINE int avs_is_string(AVS_Value v) { return v.type == 's'; }
  482. AVSC_INLINE int avs_is_array(AVS_Value v) { return v.type == 'a'; }
  483. AVSC_INLINE int avs_is_error(AVS_Value v) { return v.type == 'e'; }
  484.  
  485. #if defined __cplusplus
  486. extern "C"
  487. {
  488. #endif // __cplusplus
  489. AVSC_API(AVS_Clip *, avs_take_clip)(AVS_Value, AVS_ScriptEnvironment *);
  490. AVSC_API(void, avs_set_to_clip)(AVS_Value *, AVS_Clip *);
  491. #if defined __cplusplus
  492. }
  493. #endif // __cplusplus
  494.  
  495. AVSC_INLINE int avs_as_bool(AVS_Value v)
  496.         { return v.d.boolean; }
  497. AVSC_INLINE int avs_as_int(AVS_Value v)
  498.         { return v.d.integer; }
  499. AVSC_INLINE const char * avs_as_string(AVS_Value v)
  500.         { return avs_is_error(v) || avs_is_string(v) ? v.d.string : 0; }
  501. AVSC_INLINE double avs_as_float(AVS_Value v)
  502.         { return avs_is_int(v) ? v.d.integer : v.d.floating_pt; }
  503. AVSC_INLINE const char * avs_as_error(AVS_Value v)
  504.         { return avs_is_error(v) ? v.d.string : 0; }
  505. AVSC_INLINE const AVS_Value * avs_as_array(AVS_Value v)
  506.         { return v.d.array; }
  507. AVSC_INLINE int avs_array_size(AVS_Value v)
  508.         { return avs_is_array(v) ? v.array_size : 1; }
  509. AVSC_INLINE AVS_Value avs_array_elt(AVS_Value v, int index)
  510.         { return avs_is_array(v) ? v.d.array[index] : v; }
  511.  
  512. // only use these functions on am AVS_Value that does not already have
  513. // an active value.  Remember, treat AVS_Value as a fat pointer.
  514. AVSC_INLINE AVS_Value avs_new_value_bool(int v0)
  515.         { AVS_Value v; v.type = 'b'; v.d.boolean = v0 == 0 ? 0 : 1; return v; }
  516. AVSC_INLINE AVS_Value avs_new_value_int(int v0)
  517.         { AVS_Value v; v.type = 'i'; v.d.integer = v0; return v; }
  518. AVSC_INLINE AVS_Value avs_new_value_string(const char * v0)
  519.         { AVS_Value v; v.type = 's'; v.d.string = v0; return v; }
  520. AVSC_INLINE AVS_Value avs_new_value_float(float v0)
  521.         { AVS_Value v; v.type = 'f'; v.d.floating_pt = v0; return v;}
  522. AVSC_INLINE AVS_Value avs_new_value_error(const char * v0)
  523.         { AVS_Value v; v.type = 'e'; v.d.string = v0; return v; }
  524. #ifndef AVSC_NO_DECLSPEC
  525. AVSC_INLINE AVS_Value avs_new_value_clip(AVS_Clip * v0)
  526.         { AVS_Value v; avs_set_to_clip(&v, v0); return v; }
  527. #endif
  528. AVSC_INLINE AVS_Value avs_new_value_array(AVS_Value * v0, int size)
  529.         { AVS_Value v; v.type = 'a'; v.d.array = v0; v.array_size = size; return v; }
  530.  
  531. /////////////////////////////////////////////////////////////////////
  532. //
  533. // AVS_Clip
  534. //
  535. #if defined __cplusplus
  536. extern "C"
  537. {
  538. #endif // __cplusplus
  539. AVSC_API(void, avs_release_clip)(AVS_Clip *);
  540. AVSC_API(AVS_Clip *, avs_copy_clip)(AVS_Clip *);
  541.  
  542. AVSC_API(const char *, avs_clip_get_error)(AVS_Clip *); // return 0 if no error
  543.  
  544. AVSC_API(const AVS_VideoInfo *, avs_get_video_info)(AVS_Clip *);
  545.  
  546. AVSC_API(int, avs_get_version)(AVS_Clip *);
  547.  
  548. AVSC_API(AVS_VideoFrame *, avs_get_frame)(AVS_Clip *, int n);
  549. // The returned video frame must be released with avs_release_video_frame
  550.  
  551. AVSC_API(int, avs_get_parity)(AVS_Clip *, int n);
  552. // return field parity if field_based, else parity of first field in frame
  553.  
  554. AVSC_API(int, avs_get_audio)(AVS_Clip *, void * buf,
  555.                                   INT64 start, INT64 count);
  556. // start and count are in samples
  557.  
  558. AVSC_API(int, avs_set_cache_hints)(AVS_Clip *,
  559.                                         int cachehints, size_t frame_range);
  560. #if defined __cplusplus
  561. }
  562. #endif // __cplusplus
  563.  
  564. // This is the callback type used by avs_add_function
  565. typedef AVS_Value (AVSC_CC * AVS_ApplyFunc)
  566.                         (AVS_ScriptEnvironment *, AVS_Value args, void * user_data);
  567.  
  568. typedef struct AVS_FilterInfo AVS_FilterInfo;
  569. struct AVS_FilterInfo
  570. {
  571.   // these members should not be modified outside of the AVS_ApplyFunc callback
  572.   AVS_Clip * child;
  573.   AVS_VideoInfo vi;
  574.   AVS_ScriptEnvironment * env;
  575.   AVS_VideoFrame * (AVSC_CC * get_frame)(AVS_FilterInfo *, int n);
  576.   int (AVSC_CC * get_parity)(AVS_FilterInfo *, int n);
  577.   int (AVSC_CC * get_audio)(AVS_FilterInfo *, void * buf,
  578.                                   INT64 start, INT64 count);
  579.   int (AVSC_CC * set_cache_hints)(AVS_FilterInfo *, int cachehints,
  580.                                         int frame_range);
  581.   void (AVSC_CC * free_filter)(AVS_FilterInfo *);
  582.  
  583.   // Should be set when ever there is an error to report.
  584.   // It is cleared before any of the above methods are called
  585.   const char * error;
  586.   // this is to store whatever and may be modified at will
  587.   void * user_data;
  588. };
  589.  
  590. // Create a new filter
  591. // fi is set to point to the AVS_FilterInfo so that you can
  592. //   modify it once it is initilized.
  593. // store_child should generally be set to true.  If it is not
  594. //    set than ALL methods (the function pointers) must be defined
  595. // If it is set than you do not need to worry about freeing the child
  596. //    clip.
  597. #if defined __cplusplus
  598. extern "C"
  599. {
  600. #endif // __cplusplus
  601. AVSC_API(AVS_Clip *, avs_new_c_filter)(AVS_ScriptEnvironment * e,
  602.                                       AVS_FilterInfo * * fi,
  603.                                       AVS_Value child, int store_child);
  604. #if defined __cplusplus
  605. }
  606. #endif // __cplusplus
  607.  
  608.  
  609. /////////////////////////////////////////////////////////////////////
  610. //
  611. // AVS_ScriptEnvironment
  612. //
  613.  
  614. // For GetCPUFlags.  These are backwards-compatible with those in VirtualDub.
  615. enum {
  616.                                 /* slowest CPU to support extension */
  617.   AVS_CPU_FORCE        = 0x01,   // N/A
  618.   AVS_CPU_FPU          = 0x02,   // 386/486DX
  619.   AVS_CPU_MMX          = 0x04,   // P55C, K6, PII
  620.   AVS_CPU_INTEGER_SSE  = 0x08,   // PIII, Athlon
  621.   AVS_CPU_SSE          = 0x10,   // PIII, Athlon XP/MP
  622.   AVS_CPU_SSE2         = 0x20,   // PIV, Hammer
  623.   AVS_CPU_3DNOW        = 0x40,   // K6-2
  624.   AVS_CPU_3DNOW_EXT    = 0x80,   // Athlon
  625.   AVS_CPU_X86_64       = 0xA0,   // Hammer (note: equiv. to 3DNow + SSE2,
  626.                                  // which only Hammer will have anyway)
  627. };
  628.  
  629. #if defined __cplusplus
  630. extern "C"
  631. {
  632. #endif // __cplusplus
  633. AVSC_API(const char *, avs_get_error)(AVS_ScriptEnvironment *); // return 0 if no error
  634.  
  635. AVSC_API(long, avs_get_cpu_flags)(AVS_ScriptEnvironment *);
  636. AVSC_API(int, avs_check_version)(AVS_ScriptEnvironment *, int version);
  637.  
  638. AVSC_API(char *, avs_save_string)(AVS_ScriptEnvironment *, const char* s, int length);
  639. AVSC_API(char *, avs_sprintf)(AVS_ScriptEnvironment *, const char * fmt, ...);
  640.  
  641. AVSC_API(char *, avs_vsprintf)(AVS_ScriptEnvironment *, const char * fmt, va_list val);
  642.  // note: val is really a va_list; I hope everyone typedefs va_list to a pointer
  643.  
  644. AVSC_API(int, avs_add_function)(AVS_ScriptEnvironment *,
  645.                                      const char * name, const char * params,
  646.                                      AVS_ApplyFunc apply, void * user_data);
  647.  
  648. AVSC_API(int, avs_function_exists)(AVS_ScriptEnvironment *, const char * name);
  649.  
  650. AVSC_API(AVS_Value, avs_invoke)(AVS_ScriptEnvironment *, const char * name,
  651.                                AVS_Value args, const char** arg_names);
  652. // The returned value must be be released with avs_release_value
  653.  
  654. AVSC_API(AVS_Value, avs_get_var)(AVS_ScriptEnvironment *, const char* name);
  655. // The returned value must be be released with avs_release_value
  656.  
  657. AVSC_API(int, avs_set_var)(AVS_ScriptEnvironment *, const char* name, AVS_Value val);
  658.  
  659. AVSC_API(int, avs_set_global_var)(AVS_ScriptEnvironment *, const char* name, const AVS_Value val);
  660.  
  661. //void avs_push_context(AVS_ScriptEnvironment *, int level=0);
  662. //void avs_pop_context(AVS_ScriptEnvironment *);
  663.  
  664. AVSC_API(AVS_VideoFrame *, avs_new_video_frame_a)(AVS_ScriptEnvironment *,
  665.                                           const AVS_VideoInfo * vi, int align);
  666. // align should be at least 16
  667. #if defined __cplusplus
  668. }
  669. #endif // __cplusplus
  670.  
  671. #ifndef AVSC_NO_DECLSPEC
  672. AVSC_INLINE
  673. AVS_VideoFrame * avs_new_video_frame(AVS_ScriptEnvironment * env,
  674.                                      const AVS_VideoInfo * vi)
  675.   {return avs_new_video_frame_a(env,vi,AVS_FRAME_ALIGN);}
  676.  
  677. AVSC_INLINE
  678. AVS_VideoFrame * avs_new_frame(AVS_ScriptEnvironment * env,
  679.                                const AVS_VideoInfo * vi)
  680.   {return avs_new_video_frame_a(env,vi,AVS_FRAME_ALIGN);}
  681. #endif
  682.  
  683. #if defined __cplusplus
  684. extern "C"
  685. {
  686. #endif // __cplusplus
  687. AVSC_API(int, avs_make_writable)(AVS_ScriptEnvironment *, AVS_VideoFrame * * pvf);
  688.  
  689. 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);
  690.  
  691. typedef void (AVSC_CC *AVS_ShutdownFunc)(void* user_data, AVS_ScriptEnvironment * env);
  692. AVSC_API(void, avs_at_exit)(AVS_ScriptEnvironment *, AVS_ShutdownFunc function, void * user_data);
  693.  
  694. AVSC_API(AVS_VideoFrame *, avs_subframe)(AVS_ScriptEnvironment *, AVS_VideoFrame * src, int rel_offset, int new_pitch, int new_row_size, int new_height);
  695. // The returned video frame must be be released
  696.  
  697. AVSC_API(int, avs_set_memory_max)(AVS_ScriptEnvironment *, int mem);
  698.  
  699. AVSC_API(int, avs_set_working_dir)(AVS_ScriptEnvironment *, const char * newdir);
  700.  
  701. // avisynth.dll exports this; it's a way to use it as a library, without
  702. // writing an AVS script or without going through AVIFile.
  703. AVSC_API(AVS_ScriptEnvironment *, avs_create_script_environment)(int version);
  704. #if defined __cplusplus
  705. }
  706. #endif // __cplusplus
  707.  
  708. // this symbol is the entry point for the plugin and must
  709. // be defined
  710. AVSC_EXPORT
  711. const char * AVSC_CC avisynth_c_plugin_init(AVS_ScriptEnvironment* env);
  712.  
  713.  
  714. #if defined __cplusplus
  715. extern "C"
  716. {
  717. #endif // __cplusplus
  718. AVSC_API(void, avs_delete_script_environment)(AVS_ScriptEnvironment *);
  719.  
  720.  
  721. 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);
  722. // The returned video frame must be be released
  723. #if defined __cplusplus
  724. }
  725. #endif // __cplusplus
  726.  
  727. #endif //__AVXSYNTH_C__
  728.