FFmpeg  4.2.3
avisynth.c
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1 /*
2  * AviSynth/AvxSynth support
3  * Copyright (c) 2012 AvxSynth Team
4  *
5  * This file is part of FFmpeg
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include "libavutil/attributes.h"
23 #include "libavutil/internal.h"
24 
25 #include "libavcodec/internal.h"
26 
27 #include "avformat.h"
28 #include "internal.h"
29 #include "config.h"
30 
31 /* Enable function pointer definitions for runtime loading. */
32 #define AVSC_NO_DECLSPEC
33 
34 /* Platform-specific directives for AviSynth vs AvxSynth. */
35 #ifdef _WIN32
36  #include "compat/w32dlfcn.h"
37  #undef EXTERN_C
39  #define AVISYNTH_LIB "avisynth"
40  #define USING_AVISYNTH
41 #else
42  #include <dlfcn.h>
44  #define AVISYNTH_NAME "libavxsynth"
45  #define AVISYNTH_LIB AVISYNTH_NAME SLIBSUF
46 #endif
47 
48 typedef struct AviSynthLibrary {
49  void *library;
50 #define AVSC_DECLARE_FUNC(name) name ## _func name
51  AVSC_DECLARE_FUNC(avs_bit_blt);
52  AVSC_DECLARE_FUNC(avs_clip_get_error);
53  AVSC_DECLARE_FUNC(avs_create_script_environment);
54  AVSC_DECLARE_FUNC(avs_delete_script_environment);
55  AVSC_DECLARE_FUNC(avs_get_audio);
56  AVSC_DECLARE_FUNC(avs_get_error);
57  AVSC_DECLARE_FUNC(avs_get_frame);
58  AVSC_DECLARE_FUNC(avs_get_version);
59  AVSC_DECLARE_FUNC(avs_get_video_info);
60  AVSC_DECLARE_FUNC(avs_invoke);
61  AVSC_DECLARE_FUNC(avs_release_clip);
62  AVSC_DECLARE_FUNC(avs_release_value);
63  AVSC_DECLARE_FUNC(avs_release_video_frame);
64  AVSC_DECLARE_FUNC(avs_take_clip);
65 #ifdef USING_AVISYNTH
71  AVSC_DECLARE_FUNC(avs_is_planar_rgb);
72  AVSC_DECLARE_FUNC(avs_is_planar_rgba);
73 #endif
74 #undef AVSC_DECLARE_FUNC
76 
77 typedef struct AviSynthContext {
80  const AVS_VideoInfo *vi;
81 
82  /* avisynth_read_packet_video() iterates over this. */
83  int n_planes;
84  const int *planes;
85 
88  int64_t curr_sample;
89 
90  int error;
91 
92  /* Linked list pointers. */
95 
96 static const int avs_planes_packed[1] = { 0 };
97 static const int avs_planes_grey[1] = { AVS_PLANAR_Y };
98 static const int avs_planes_yuv[3] = { AVS_PLANAR_Y, AVS_PLANAR_U,
99  AVS_PLANAR_V };
100 #ifdef USING_AVISYNTH
101 static const int avs_planes_rgb[3] = { AVS_PLANAR_G, AVS_PLANAR_B,
102  AVS_PLANAR_R };
103 static const int avs_planes_yuva[4] = { AVS_PLANAR_Y, AVS_PLANAR_U,
105 static const int avs_planes_rgba[4] = { AVS_PLANAR_G, AVS_PLANAR_B,
107 #endif
108 
109 /* A conflict between C++ global objects, atexit, and dynamic loading requires
110  * us to register our own atexit handler to prevent double freeing. */
112 static int avs_atexit_called = 0;
113 
114 /* Linked list of AviSynthContexts. An atexit handler destroys this list. */
116 
117 static av_cold void avisynth_atexit_handler(void);
118 
120 {
121  avs_library.library = dlopen(AVISYNTH_LIB, RTLD_NOW | RTLD_LOCAL);
122  if (!avs_library.library)
123  return AVERROR_UNKNOWN;
124 
125 #define LOAD_AVS_FUNC(name, continue_on_fail) \
126  avs_library.name = (name ## _func) \
127  dlsym(avs_library.library, #name); \
128  if (!continue_on_fail && !avs_library.name) \
129  goto fail;
130 
131  LOAD_AVS_FUNC(avs_bit_blt, 0);
132  LOAD_AVS_FUNC(avs_clip_get_error, 0);
133  LOAD_AVS_FUNC(avs_create_script_environment, 0);
134  LOAD_AVS_FUNC(avs_delete_script_environment, 0);
135  LOAD_AVS_FUNC(avs_get_audio, 0);
136  LOAD_AVS_FUNC(avs_get_error, 1); // New to AviSynth 2.6
137  LOAD_AVS_FUNC(avs_get_frame, 0);
138  LOAD_AVS_FUNC(avs_get_version, 0);
139  LOAD_AVS_FUNC(avs_get_video_info, 0);
140  LOAD_AVS_FUNC(avs_invoke, 0);
141  LOAD_AVS_FUNC(avs_release_clip, 0);
142  LOAD_AVS_FUNC(avs_release_value, 0);
143  LOAD_AVS_FUNC(avs_release_video_frame, 0);
144  LOAD_AVS_FUNC(avs_take_clip, 0);
145 #ifdef USING_AVISYNTH
151  LOAD_AVS_FUNC(avs_is_planar_rgb, 1);
152  LOAD_AVS_FUNC(avs_is_planar_rgba, 1);
153 #endif
154 #undef LOAD_AVS_FUNC
155 
156  atexit(avisynth_atexit_handler);
157  return 0;
158 
159 fail:
160  dlclose(avs_library.library);
161  return AVERROR_UNKNOWN;
162 }
163 
164 /* Note that avisynth_context_create and avisynth_context_destroy
165  * do not allocate or free the actual context! That is taken care of
166  * by libavformat. */
168 {
169  AviSynthContext *avs = s->priv_data;
170  int ret;
171 
172  if (!avs_library.library)
173  if (ret = avisynth_load_library())
174  return ret;
175 
176  avs->env = avs_library.avs_create_script_environment(3);
177  if (avs_library.avs_get_error) {
178  const char *error = avs_library.avs_get_error(avs->env);
179  if (error) {
180  av_log(s, AV_LOG_ERROR, "%s\n", error);
181  return AVERROR_UNKNOWN;
182  }
183  }
184 
185  if (!avs_ctx_list) {
186  avs_ctx_list = avs;
187  } else {
188  avs->next = avs_ctx_list;
189  avs_ctx_list = avs;
190  }
191 
192  return 0;
193 }
194 
196 {
197  if (avs_atexit_called)
198  return;
199 
200  if (avs == avs_ctx_list) {
201  avs_ctx_list = avs->next;
202  } else {
204  while (prev->next != avs)
205  prev = prev->next;
206  prev->next = avs->next;
207  }
208 
209  if (avs->clip) {
210  avs_library.avs_release_clip(avs->clip);
211  avs->clip = NULL;
212  }
213  if (avs->env) {
214  avs_library.avs_delete_script_environment(avs->env);
215  avs->env = NULL;
216  }
217 }
218 
220 {
222 
223  while (avs) {
224  AviSynthContext *next = avs->next;
226  avs = next;
227  }
228  dlclose(avs_library.library);
229 
230  avs_atexit_called = 1;
231 }
232 
233 /* Create AVStream from audio and video data. */
235 {
236  AviSynthContext *avs = s->priv_data;
237  int planar = 0; // 0: packed, 1: YUV, 2: Y8, 3: Planar RGB, 4: YUVA, 5: Planar RGBA
238 
241  st->codecpar->width = avs->vi->width;
242  st->codecpar->height = avs->vi->height;
243 
244  st->avg_frame_rate = (AVRational) { avs->vi->fps_numerator,
245  avs->vi->fps_denominator };
246  st->start_time = 0;
247  st->duration = avs->vi->num_frames;
248  st->nb_frames = avs->vi->num_frames;
249  avpriv_set_pts_info(st, 32, avs->vi->fps_denominator, avs->vi->fps_numerator);
250 
251  switch (avs->vi->pixel_type) {
252 #ifdef USING_AVISYNTH
253  /* 10~16-bit YUV pix_fmts (AviSynth+) */
254  case AVS_CS_YUV444P10:
256  planar = 1;
257  break;
258  case AVS_CS_YUV422P10:
260  planar = 1;
261  break;
262  case AVS_CS_YUV420P10:
264  planar = 1;
265  break;
266  case AVS_CS_YUV444P12:
268  planar = 1;
269  break;
270  case AVS_CS_YUV422P12:
272  planar = 1;
273  break;
274  case AVS_CS_YUV420P12:
276  planar = 1;
277  break;
278  case AVS_CS_YUV444P14:
280  planar = 1;
281  break;
282  case AVS_CS_YUV422P14:
284  planar = 1;
285  break;
286  case AVS_CS_YUV420P14:
288  planar = 1;
289  break;
290  case AVS_CS_YUV444P16:
292  planar = 1;
293  break;
294  case AVS_CS_YUV422P16:
296  planar = 1;
297  break;
298  case AVS_CS_YUV420P16:
300  planar = 1;
301  break;
302  /* 8~16-bit YUV pix_fmts with Alpha (AviSynth+) */
303  case AVS_CS_YUVA444:
305  planar = 4;
306  break;
307  case AVS_CS_YUVA422:
309  planar = 4;
310  break;
311  case AVS_CS_YUVA420:
313  planar = 4;
314  break;
315  case AVS_CS_YUVA444P10:
317  planar = 4;
318  break;
319  case AVS_CS_YUVA422P10:
321  planar = 4;
322  break;
323  case AVS_CS_YUVA420P10:
325  planar = 4;
326  break;
327  case AVS_CS_YUVA422P12:
329  planar = 4;
330  break;
331  case AVS_CS_YUVA444P16:
333  planar = 4;
334  break;
335  case AVS_CS_YUVA422P16:
337  planar = 4;
338  break;
339  case AVS_CS_YUVA420P16:
341  planar = 4;
342  break;
343  /* Planar RGB pix_fmts (AviSynth+) */
344  case AVS_CS_RGBP:
346  planar = 3;
347  break;
348  case AVS_CS_RGBP10:
350  planar = 3;
351  break;
352  case AVS_CS_RGBP12:
354  planar = 3;
355  break;
356  case AVS_CS_RGBP14:
358  planar = 3;
359  break;
360  case AVS_CS_RGBP16:
362  planar = 3;
363  break;
364  /* Single precision floating point Planar RGB (AviSynth+) */
365  case AVS_CS_RGBPS:
367  planar = 3;
368  break;
369  /* Planar RGB pix_fmts with Alpha (AviSynth+) */
370  case AVS_CS_RGBAP:
372  planar = 5;
373  break;
374  case AVS_CS_RGBAP10:
376  planar = 5;
377  break;
378  case AVS_CS_RGBAP12:
380  planar = 5;
381  break;
382  case AVS_CS_RGBAP16:
384  planar = 5;
385  break;
386  /* Single precision floating point Planar RGB with Alpha (AviSynth+) */
387  case AVS_CS_RGBAPS:
389  planar = 5;
390  break;
391  /* 10~16-bit gray pix_fmts (AviSynth+) */
392  case AVS_CS_Y10:
394  planar = 2;
395  break;
396  case AVS_CS_Y12:
398  planar = 2;
399  break;
400  case AVS_CS_Y14:
402  planar = 2;
403  break;
404  case AVS_CS_Y16:
406  planar = 2;
407  break;
408  /* Single precision floating point gray (AviSynth+) */
409  case AVS_CS_Y32:
411  planar = 2;
412  break;
413  /* pix_fmts added in AviSynth 2.6 */
414  case AVS_CS_YV24:
416  planar = 1;
417  break;
418  case AVS_CS_YV16:
420  planar = 1;
421  break;
422  case AVS_CS_YV411:
424  planar = 1;
425  break;
426  case AVS_CS_Y8:
428  planar = 2;
429  break;
430  /* 16-bit packed RGB pix_fmts (AviSynth+) */
431  case AVS_CS_BGR48:
433  break;
434  case AVS_CS_BGR64:
436  break;
437 #endif
438  /* AviSynth 2.5 and AvxSynth pix_fmts */
439  case AVS_CS_BGR24:
441  break;
442  case AVS_CS_BGR32:
444  break;
445  case AVS_CS_YUY2:
447  break;
448  case AVS_CS_YV12:
450  planar = 1;
451  break;
452  case AVS_CS_I420: // Is this even used anywhere?
454  planar = 1;
455  break;
456  default:
457  av_log(s, AV_LOG_ERROR,
458  "unknown AviSynth colorspace %d\n", avs->vi->pixel_type);
459  avs->error = 1;
460  return AVERROR_UNKNOWN;
461  }
462 
463  switch (planar) {
464 #ifdef USING_AVISYNTH
465  case 5: // Planar RGB + Alpha
466  avs->n_planes = 4;
467  avs->planes = avs_planes_rgba;
468  break;
469  case 4: // YUV + Alpha
470  avs->n_planes = 4;
471  avs->planes = avs_planes_yuva;
472  break;
473  case 3: // Planar RGB
474  avs->n_planes = 3;
475  avs->planes = avs_planes_rgb;
476  break;
477 #endif
478  case 2: // Y8
479  avs->n_planes = 1;
480  avs->planes = avs_planes_grey;
481  break;
482  case 1: // YUV
483  avs->n_planes = 3;
484  avs->planes = avs_planes_yuv;
485  break;
486  default:
487  avs->n_planes = 1;
488  avs->planes = avs_planes_packed;
489  }
490  return 0;
491 }
492 
494 {
495  AviSynthContext *avs = s->priv_data;
496 
499  st->codecpar->channels = avs->vi->nchannels;
500  st->duration = avs->vi->num_audio_samples;
502 
503  switch (avs->vi->sample_type) {
504  case AVS_SAMPLE_INT8:
506  break;
507  case AVS_SAMPLE_INT16:
509  break;
510  case AVS_SAMPLE_INT24:
512  break;
513  case AVS_SAMPLE_INT32:
515  break;
516  case AVS_SAMPLE_FLOAT:
518  break;
519  default:
520  av_log(s, AV_LOG_ERROR,
521  "unknown AviSynth sample type %d\n", avs->vi->sample_type);
522  avs->error = 1;
523  return AVERROR_UNKNOWN;
524  }
525  return 0;
526 }
527 
529 {
530  AviSynthContext *avs = s->priv_data;
531  AVStream *st;
532  int ret;
533  int id = 0;
534 
535  if (avs_has_video(avs->vi)) {
536  st = avformat_new_stream(s, NULL);
537  if (!st)
538  return AVERROR_UNKNOWN;
539  st->id = id++;
540  if (ret = avisynth_create_stream_video(s, st))
541  return ret;
542  }
543  if (avs_has_audio(avs->vi)) {
544  st = avformat_new_stream(s, NULL);
545  if (!st)
546  return AVERROR_UNKNOWN;
547  st->id = id++;
548  if (ret = avisynth_create_stream_audio(s, st))
549  return ret;
550  }
551  return 0;
552 }
553 
555 {
556  AviSynthContext *avs = s->priv_data;
557  AVS_Value arg, val;
558  int ret;
559 #ifdef USING_AVISYNTH
560  char filename_ansi[MAX_PATH * 4];
561  wchar_t filename_wc[MAX_PATH * 4];
562 #endif
563 
564  if (ret = avisynth_context_create(s))
565  return ret;
566 
567 #ifdef USING_AVISYNTH
568  /* Convert UTF-8 to ANSI code page */
569  MultiByteToWideChar(CP_UTF8, 0, s->filename, -1, filename_wc, MAX_PATH * 4);
570  WideCharToMultiByte(CP_THREAD_ACP, 0, filename_wc, -1, filename_ansi,
571  MAX_PATH * 4, NULL, NULL);
572  arg = avs_new_value_string(filename_ansi);
573 #else
574  arg = avs_new_value_string(s->filename);
575 #endif
576  val = avs_library.avs_invoke(avs->env, "Import", arg, 0);
577  if (avs_is_error(val)) {
578  av_log(s, AV_LOG_ERROR, "%s\n", avs_as_error(val));
579  ret = AVERROR_UNKNOWN;
580  goto fail;
581  }
582  if (!avs_is_clip(val)) {
583  av_log(s, AV_LOG_ERROR, "AviSynth script did not return a clip\n");
584  ret = AVERROR_UNKNOWN;
585  goto fail;
586  }
587 
588  avs->clip = avs_library.avs_take_clip(val, avs->env);
589  avs->vi = avs_library.avs_get_video_info(avs->clip);
590 
591 #ifdef USING_AVISYNTH
592  /* On Windows, FFmpeg supports AviSynth interface version 6 or higher.
593  * This includes AviSynth 2.6 RC1 or higher, and AviSynth+ r1718 or higher,
594  * and excludes 2.5 and the 2.6 alphas. Since AvxSynth identifies itself
595  * as interface version 3 like 2.5.8, this needs to be special-cased. */
596 
597  if (avs_library.avs_get_version(avs->clip) < 6) {
598  av_log(s, AV_LOG_ERROR,
599  "AviSynth version is too old. Please upgrade to either AviSynth 2.6 >= RC1 or AviSynth+ >= r1718.\n");
600  ret = AVERROR_UNKNOWN;
601  goto fail;
602  }
603 #endif
604 
605  /* Release the AVS_Value as it will go out of scope. */
606  avs_library.avs_release_value(val);
607 
608  if (ret = avisynth_create_stream(s))
609  goto fail;
610 
611  return 0;
612 
613 fail:
615  return ret;
616 }
617 
619  AVPacket *pkt, int *discard)
620 {
621  AviSynthContext *avs = s->priv_data;
622 
623  avs->curr_stream++;
624  avs->curr_stream %= s->nb_streams;
625 
626  *st = s->streams[avs->curr_stream];
627  if ((*st)->discard == AVDISCARD_ALL)
628  *discard = 1;
629  else
630  *discard = 0;
631 
632  return;
633 }
634 
635 /* Copy AviSynth clip data into an AVPacket. */
637  int discard)
638 {
639  AviSynthContext *avs = s->priv_data;
641  unsigned char *dst_p;
642  const unsigned char *src_p;
643  int n, i, plane, rowsize, planeheight, pitch, bits;
644  const char *error;
645  int avsplus av_unused;
646 
647  if (avs->curr_frame >= avs->vi->num_frames)
648  return AVERROR_EOF;
649 
650  /* This must happen even if the stream is discarded to prevent desync. */
651  n = avs->curr_frame++;
652  if (discard)
653  return 0;
654 
655 #ifdef USING_AVISYNTH
656  /* Detect whether we're using AviSynth 2.6 or AviSynth+ by
657  * looking for whether avs_is_planar_rgb exists. */
658  if (GetProcAddress(avs_library.library, "avs_is_planar_rgb") == NULL)
659  avsplus = 0;
660  else
661  avsplus = 1;
662 
663  /* avs_bits_per_pixel changed to AVSC_API with AviSynth 2.6, which
664  * requires going through avs_library, while AvxSynth has it under
665  * the older AVSC_INLINE type, so special-case this. */
666 
667  bits = avs_library.avs_bits_per_pixel(avs->vi);
668 #else
669  bits = avs_bits_per_pixel(avs->vi);
670 #endif
671 
672  /* Without the cast to int64_t, calculation overflows at about 9k x 9k
673  * resolution. */
674  pkt->size = (((int64_t)avs->vi->width *
675  (int64_t)avs->vi->height) * bits) / 8;
676  if (!pkt->size)
677  return AVERROR_UNKNOWN;
678 
679  if (av_new_packet(pkt, pkt->size) < 0)
680  return AVERROR(ENOMEM);
681 
682  pkt->pts = n;
683  pkt->dts = n;
684  pkt->duration = 1;
685  pkt->stream_index = avs->curr_stream;
686 
687  frame = avs_library.avs_get_frame(avs->clip, n);
688  error = avs_library.avs_clip_get_error(avs->clip);
689  if (error) {
690  av_log(s, AV_LOG_ERROR, "%s\n", error);
691  avs->error = 1;
692  av_packet_unref(pkt);
693  return AVERROR_UNKNOWN;
694  }
695 
696  dst_p = pkt->data;
697  for (i = 0; i < avs->n_planes; i++) {
698  plane = avs->planes[i];
699 #ifdef USING_AVISYNTH
700  src_p = avs_library.avs_get_read_ptr_p(frame, plane);
701  pitch = avs_library.avs_get_pitch_p(frame, plane);
702 
703  rowsize = avs_library.avs_get_row_size_p(frame, plane);
704  planeheight = avs_library.avs_get_height_p(frame, plane);
705 #else
706  src_p = avs_get_read_ptr_p(frame, plane);
707  pitch = avs_get_pitch_p(frame, plane);
708 
709  rowsize = avs_get_row_size_p(frame, plane);
710  planeheight = avs_get_height_p(frame, plane);
711 #endif
712 
713  /* Flip RGB video. */
714  if (avs_is_rgb24(avs->vi) || avs_is_rgb(avs->vi)) {
715  src_p = src_p + (planeheight - 1) * pitch;
716  pitch = -pitch;
717  }
718 
719 #ifdef USING_AVISYNTH
720  /* Flip Planar RGB video */
721  if (avsplus && (avs_library.avs_is_planar_rgb(avs->vi) ||
722  avs_library.avs_is_planar_rgba(avs->vi))) {
723  src_p = src_p + (planeheight - 1) * pitch;
724  pitch = -pitch;
725  }
726 #endif
727 
728  avs_library.avs_bit_blt(avs->env, dst_p, rowsize, src_p, pitch,
729  rowsize, planeheight);
730  dst_p += rowsize * planeheight;
731  }
732 
733  avs_library.avs_release_video_frame(frame);
734  return 0;
735 }
736 
738  int discard)
739 {
740  AviSynthContext *avs = s->priv_data;
741  AVRational fps, samplerate;
742  int samples;
743  int64_t n;
744  const char *error;
745 
746  if (avs->curr_sample >= avs->vi->num_audio_samples)
747  return AVERROR_EOF;
748 
749  fps.num = avs->vi->fps_numerator;
750  fps.den = avs->vi->fps_denominator;
751  samplerate.num = avs->vi->audio_samples_per_second;
752  samplerate.den = 1;
753 
754  if (avs_has_video(avs->vi)) {
755  if (avs->curr_frame < avs->vi->num_frames)
756  samples = av_rescale_q(avs->curr_frame, samplerate, fps) -
757  avs->curr_sample;
758  else
759  samples = av_rescale_q(1, samplerate, fps);
760  } else {
761  samples = 1000;
762  }
763 
764  /* After seeking, audio may catch up with video. */
765  if (samples <= 0) {
766  pkt->size = 0;
767  pkt->data = NULL;
768  return 0;
769  }
770 
771  if (avs->curr_sample + samples > avs->vi->num_audio_samples)
772  samples = avs->vi->num_audio_samples - avs->curr_sample;
773 
774  /* This must happen even if the stream is discarded to prevent desync. */
775  n = avs->curr_sample;
776  avs->curr_sample += samples;
777  if (discard)
778  return 0;
779 
780  pkt->size = avs_bytes_per_channel_sample(avs->vi) *
781  samples * avs->vi->nchannels;
782  if (!pkt->size)
783  return AVERROR_UNKNOWN;
784 
785  if (av_new_packet(pkt, pkt->size) < 0)
786  return AVERROR(ENOMEM);
787 
788  pkt->pts = n;
789  pkt->dts = n;
790  pkt->duration = samples;
791  pkt->stream_index = avs->curr_stream;
792 
793  avs_library.avs_get_audio(avs->clip, pkt->data, n, samples);
794  error = avs_library.avs_clip_get_error(avs->clip);
795  if (error) {
796  av_log(s, AV_LOG_ERROR, "%s\n", error);
797  avs->error = 1;
798  av_packet_unref(pkt);
799  return AVERROR_UNKNOWN;
800  }
801  return 0;
802 }
803 
805 {
806  int ret;
807 
808  // Calling library must implement a lock for thread-safe opens.
809  if (ret = ff_lock_avformat())
810  return ret;
811 
812  if (ret = avisynth_open_file(s)) {
814  return ret;
815  }
816 
818  return 0;
819 }
820 
822 {
823  AviSynthContext *avs = s->priv_data;
824  AVStream *st;
825  int discard = 0;
826  int ret;
827 
828  if (avs->error)
829  return AVERROR_UNKNOWN;
830 
831  /* If either stream reaches EOF, try to read the other one before
832  * giving up. */
833  avisynth_next_stream(s, &st, pkt, &discard);
834  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
835  ret = avisynth_read_packet_video(s, pkt, discard);
836  if (ret == AVERROR_EOF && avs_has_audio(avs->vi)) {
837  avisynth_next_stream(s, &st, pkt, &discard);
838  return avisynth_read_packet_audio(s, pkt, discard);
839  }
840  } else {
841  ret = avisynth_read_packet_audio(s, pkt, discard);
842  if (ret == AVERROR_EOF && avs_has_video(avs->vi)) {
843  avisynth_next_stream(s, &st, pkt, &discard);
844  return avisynth_read_packet_video(s, pkt, discard);
845  }
846  }
847 
848  return ret;
849 }
850 
852 {
853  if (ff_lock_avformat())
854  return AVERROR_UNKNOWN;
855 
858  return 0;
859 }
860 
861 static int avisynth_read_seek(AVFormatContext *s, int stream_index,
862  int64_t timestamp, int flags)
863 {
864  AviSynthContext *avs = s->priv_data;
865  AVStream *st;
866  AVRational fps, samplerate;
867 
868  if (avs->error)
869  return AVERROR_UNKNOWN;
870 
871  fps = (AVRational) { avs->vi->fps_numerator,
872  avs->vi->fps_denominator };
873  samplerate = (AVRational) { avs->vi->audio_samples_per_second, 1 };
874 
875  st = s->streams[stream_index];
876  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
877  /* AviSynth frame counts are signed int. */
878  if ((timestamp >= avs->vi->num_frames) ||
879  (timestamp > INT_MAX) ||
880  (timestamp < 0))
881  return AVERROR_EOF;
882  avs->curr_frame = timestamp;
883  if (avs_has_audio(avs->vi))
884  avs->curr_sample = av_rescale_q(timestamp, samplerate, fps);
885  } else {
886  if ((timestamp >= avs->vi->num_audio_samples) || (timestamp < 0))
887  return AVERROR_EOF;
888  /* Force frame granularity for seeking. */
889  if (avs_has_video(avs->vi)) {
890  avs->curr_frame = av_rescale_q(timestamp, fps, samplerate);
891  avs->curr_sample = av_rescale_q(avs->curr_frame, samplerate, fps);
892  } else {
893  avs->curr_sample = timestamp;
894  }
895  }
896 
897  return 0;
898 }
899 
901  .name = "avisynth",
902  .long_name = NULL_IF_CONFIG_SMALL("AviSynth script"),
903  .priv_data_size = sizeof(AviSynthContext),
908  .extensions = "avs",
909 };
int plane
Definition: avisynth_c.h:384
#define NULL
Definition: coverity.c:32
const char const char void * val
Definition: avisynth_c.h:863
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:430
static int avs_atexit_called
Definition: avisynth.c:112
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:424
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:397
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:407
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:425
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4903
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3957
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1478
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:403
#define AV_PIX_FMT_BGRA64
Definition: pixfmt.h:382
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:391
discard all
Definition: avcodec.h:811
static AVPacket pkt
Macro definitions for various function/variable attributes.
static const int avs_planes_yuv[3]
Definition: avisynth.c:98
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:368
Format I/O context.
Definition: avformat.h:1358
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:369
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(const uint8_t *) pi - 0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(const int16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(const int16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(const int32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(const int32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(const int64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double *) pi *(INT64_C(1)<< 63))) #define FMT_PAIR_FUNC(out, in) static conv_func_type *const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={ FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64), };static void cpy1(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, len);} static void cpy2(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 2 *len);} static void cpy4(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 4 *len);} static void cpy8(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 8 *len);} AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags) { AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) return NULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) return NULL;if(channels==1){ in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);} ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map) { switch(av_get_bytes_per_sample(in_fmt)){ case 1:ctx->simd_f=cpy1;break;case 2:ctx->simd_f=cpy2;break;case 4:ctx->simd_f=cpy4;break;case 8:ctx->simd_f=cpy8;break;} } if(HAVE_X86ASM &&HAVE_MMX) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);return ctx;} void swri_audio_convert_free(AudioConvert **ctx) { av_freep(ctx);} int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len) { int ch;int off=0;const int os=(out->planar ? 1 :out->ch_count) *out->bps;unsigned misaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask) { int planes=in->planar ? in->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;} if(ctx->out_simd_align_mask) { int planes=out->planar ? out->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;} if(ctx->simd_f &&!ctx->ch_map &&!misaligned){ off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){ if(out->planar==in->planar){ int planes=out->planar ? out->ch_count :1;for(ch=0;ch< planes;ch++){ ctx->simd_f(out-> ch const uint8_t **in ch off *out planar
Definition: audioconvert.c:56
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
static int avisynth_read_packet_audio(AVFormatContext *s, AVPacket *pkt, int discard)
Definition: avisynth.c:737
#define av_cold
Definition: attributes.h:82
int width
Video only.
Definition: avcodec.h:4023
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1495
int id
Format-specific stream ID.
Definition: avformat.h:888
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4476
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1426
AVSC_INLINE int avs_is_rgb(const AVS_VideoInfo *p)
Definition: avisynth_c.h:359
static AVFrame * frame
uint8_t * data
Definition: avcodec.h:1477
#define AVERROR_EOF
End of file.
Definition: error.h:55
#define AV_PIX_FMT_BGR48
Definition: pixfmt.h:378
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:400
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:392
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:429
#define av_log(a,...)
static av_cold int avisynth_read_close(AVFormatContext *s)
Definition: avisynth.c:851
AVSC_INLINE int avs_get_pitch_p(const AVS_VideoFrame *p, int plane)
Definition: avxsynth_c.h:340
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
#define AVISYNTH_LIB
Definition: avisynth.c:45
INT64 num_audio_samples
Definition: avisynth_c.h:344
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:86
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
const int * planes
Definition: avisynth.c:84
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:431
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3953
const char * arg
Definition: jacosubdec.c:66
AVSC_INLINE int avs_is_rgb24(const AVS_VideoInfo *p)
Definition: avisynth_c.h:362
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:408
AVSC_INLINE int avs_has_video(const AVS_VideoInfo *p)
Definition: avisynth_c.h:353
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:390
uint8_t bits
Definition: vp3data.h:202
struct AVS_Clip AVS_Clip
Definition: avisynth_c.h:326
static int avisynth_read_packet_video(AVFormatContext *s, AVPacket *pkt, int discard)
Definition: avisynth.c:636
AVInputFormat ff_avisynth_demuxer
Definition: avisynth.c:900
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:954
#define fail()
Definition: checkasm.h:120
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:409
unsigned fps_numerator
Definition: avisynth_c.h:337
AVS_ScriptEnvironment * env
Definition: avisynth.c:78
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
static AviSynthLibrary avs_library
Definition: avisynth.c:111
AVSC_DECLARE_FUNC(avs_bit_blt)
static int avisynth_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: avisynth.c:821
common internal API header
AVSC_INLINE int avs_is_clip(AVS_Value v)
Definition: avisynth_c.h:700
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1414
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:406
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:371
AVSC_INLINE AVS_Value avs_new_value_string(const char *v0)
Definition: avisynth_c.h:731
AVSC_INLINE const char * avs_as_error(AVS_Value v)
Definition: avisynth_c.h:716
AVS_Clip * clip
Definition: avisynth.c:79
static int avisynth_create_stream_video(AVFormatContext *s, AVStream *st)
Definition: avisynth.c:234
int ff_unlock_avformat(void)
Definition: utils.c:88
static const int avs_planes_grey[1]
Definition: avisynth.c:97
#define s(width, name)
Definition: cbs_vp9.c:257
int n
Definition: avisynth_c.h:760
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:426
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:405
static void error(const char *err)
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:530
AVSC_INLINE int avs_bits_per_pixel(const AVS_VideoInfo *p)
Definition: avxsynth_c.h:221
Stream structure.
Definition: avformat.h:881
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:398
static int avisynth_create_stream_audio(AVFormatContext *s, AVStream *st)
Definition: avisynth.c:493
static av_cold void avisynth_atexit_handler(void)
Definition: avisynth.c:219
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:395
AVSC_INLINE const unsigned char * avs_get_read_ptr_p(const AVS_VideoFrame *p, int plane)
Definition: avxsynth_c.h:384
#define AV_PIX_FMT_GRAYF32
Definition: pixfmt.h:419
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:370
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:599
AVSC_INLINE int avs_is_error(AVS_Value v)
Definition: avisynth_c.h:706
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:360
packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
Definition: pixfmt.h:67
void * library
Definition: avisynth.c:49
#define LOAD_AVS_FUNC(name, continue_on_fail)
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:387
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AVSC_INLINE int avs_bytes_per_channel_sample(const AVS_VideoInfo *p)
Definition: avisynth_c.h:432
static int avisynth_create_stream(AVFormatContext *s)
Definition: avisynth.c:528
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:396
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:404
const AVS_VideoInfo * vi
Definition: avisynth.c:80
#define flags(name, subs,...)
Definition: cbs_av1.c:564
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:388
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:394
static int avisynth_open_file(AVFormatContext *s)
Definition: avisynth.c:554
static av_cold int avisynth_load_library(void)
Definition: avisynth.c:119
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:930
int sample_rate
Audio only.
Definition: avcodec.h:4067
#define AV_PIX_FMT_GBRPF32
Definition: pixfmt.h:416
Main libavformat public API header.
struct AVS_ScriptEnvironment AVS_ScriptEnvironment
Definition: avisynth_c.h:327
static int avisynth_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Definition: avisynth.c:861
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
#define AV_PIX_FMT_GBRAPF32
Definition: pixfmt.h:417
common internal api header.
static AviSynthContext * avs_ctx_list
Definition: avisynth.c:115
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
Definition: avformat.h:920
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
int64_t nb_frames
number of frames in this stream if known or 0
Definition: avformat.h:932
int den
Denominator.
Definition: rational.h:60
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:71
AVSC_INLINE int avs_get_height_p(const AVS_VideoFrame *p, int plane)
Definition: avxsynth_c.h:373
struct AviSynthContext * next
Definition: avisynth.c:93
void * priv_data
Format private data.
Definition: avformat.h:1386
unsigned fps_denominator
Definition: avisynth_c.h:337
int channels
Audio only.
Definition: avcodec.h:4063
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1476
static av_cold int avisynth_context_create(AVFormatContext *s)
Definition: avisynth.c:167
int ff_lock_avformat(void)
Definition: utils.c:83
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:654
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1028
static const int avs_planes_packed[1]
Definition: avisynth.c:96
static av_cold void avisynth_context_destroy(AviSynthContext *avs)
Definition: avisynth.c:195
int stream_index
Definition: avcodec.h:1479
AVSC_INLINE int avs_get_row_size_p(const AVS_VideoFrame *p, int plane)
Definition: avxsynth_c.h:348
static av_cold int avisynth_read_header(AVFormatContext *s)
Definition: avisynth.c:804
This structure stores compressed data.
Definition: avcodec.h:1454
static void avisynth_next_stream(AVFormatContext *s, AVStream **st, AVPacket *pkt, int *discard)
Definition: avisynth.c:618
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:399
int64_t curr_sample
Definition: avisynth.c:88
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1470
#define av_unused
Definition: attributes.h:125
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:427
AVSC_INLINE int avs_has_audio(const AVS_VideoInfo *p)
Definition: avisynth_c.h:356
int audio_samples_per_second
Definition: avisynth_c.h:342