FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
vf_frei0r.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2010 Stefano Sabatini
3  * This file is part of FFmpeg.
4  *
5  * FFmpeg is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * FFmpeg is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with FFmpeg; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18  */
19 
20 /**
21  * @file
22  * frei0r wrapper
23  */
24 
25 #include <dlfcn.h>
26 #include <frei0r.h>
27 #include <stdio.h>
28 #include <string.h>
29 #include <stdlib.h>
30 #include "config.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/common.h"
33 #include "libavutil/eval.h"
34 #include "libavutil/imgutils.h"
35 #include "libavutil/internal.h"
36 #include "libavutil/mathematics.h"
37 #include "libavutil/mem.h"
38 #include "libavutil/opt.h"
39 #include "libavutil/parseutils.h"
40 #include "avfilter.h"
41 #include "formats.h"
42 #include "internal.h"
43 #include "video.h"
44 
45 typedef f0r_instance_t (*f0r_construct_f)(unsigned int width, unsigned int height);
46 typedef void (*f0r_destruct_f)(f0r_instance_t instance);
47 typedef void (*f0r_deinit_f)(void);
48 typedef int (*f0r_init_f)(void);
49 typedef void (*f0r_get_plugin_info_f)(f0r_plugin_info_t *info);
50 typedef void (*f0r_get_param_info_f)(f0r_param_info_t *info, int param_index);
51 typedef void (*f0r_update_f)(f0r_instance_t instance, double time, const uint32_t *inframe, uint32_t *outframe);
52 typedef void (*f0r_update2_f)(f0r_instance_t instance, double time, const uint32_t *inframe1, const uint32_t *inframe2, const uint32_t *inframe3, uint32_t *outframe);
53 typedef void (*f0r_set_param_value_f)(f0r_instance_t instance, f0r_param_t param, int param_index);
54 typedef void (*f0r_get_param_value_f)(f0r_instance_t instance, f0r_param_t param, int param_index);
55 
56 typedef struct Frei0rContext {
57  const AVClass *class;
59  void *dl_handle; /* dynamic library handle */
60  f0r_instance_t instance;
61  f0r_plugin_info_t plugin_info;
62 
69 
70  char *dl_name;
71  char *params;
73 
74  /* only used by the source */
75  int w, h;
77  uint64_t pts;
79 
80 static void *load_sym(AVFilterContext *ctx, const char *sym_name)
81 {
82  Frei0rContext *s = ctx->priv;
83  void *sym = dlsym(s->dl_handle, sym_name);
84  if (!sym)
85  av_log(ctx, AV_LOG_ERROR, "Could not find symbol '%s' in loaded module.\n", sym_name);
86  return sym;
87 }
88 
89 static int set_param(AVFilterContext *ctx, f0r_param_info_t info, int index, char *param)
90 {
91  Frei0rContext *s = ctx->priv;
92  union {
93  double d;
94  f0r_param_color_t col;
95  f0r_param_position_t pos;
96  } val;
97  char *tail;
98  uint8_t rgba[4];
99 
100  switch (info.type) {
101  case F0R_PARAM_BOOL:
102  if (!strcmp(param, "y")) val.d = 1.0;
103  else if (!strcmp(param, "n")) val.d = 0.0;
104  else goto fail;
105  break;
106 
107  case F0R_PARAM_DOUBLE:
108  val.d = av_strtod(param, &tail);
109  if (*tail || val.d == HUGE_VAL)
110  goto fail;
111  break;
112 
113  case F0R_PARAM_COLOR:
114  if (sscanf(param, "%f/%f/%f", &val.col.r, &val.col.g, &val.col.b) != 3) {
115  if (av_parse_color(rgba, param, -1, ctx) < 0)
116  goto fail;
117  val.col.r = rgba[0] / 255.0;
118  val.col.g = rgba[1] / 255.0;
119  val.col.b = rgba[2] / 255.0;
120  }
121  break;
122 
123  case F0R_PARAM_POSITION:
124  if (sscanf(param, "%lf/%lf", &val.pos.x, &val.pos.y) != 2)
125  goto fail;
126  break;
127  }
128 
129  s->set_param_value(s->instance, &val, index);
130  return 0;
131 
132 fail:
133  av_log(ctx, AV_LOG_ERROR, "Invalid value '%s' for parameter '%s'.\n",
134  param, info.name);
135  return AVERROR(EINVAL);
136 }
137 
138 static int set_params(AVFilterContext *ctx, const char *params)
139 {
140  Frei0rContext *s = ctx->priv;
141  int i;
142 
143  if (!params)
144  return 0;
145 
146  for (i = 0; i < s->plugin_info.num_params; i++) {
147  f0r_param_info_t info;
148  char *param;
149  int ret;
150 
151  s->get_param_info(&info, i);
152 
153  if (*params) {
154  if (!(param = av_get_token(&params, "|")))
155  return AVERROR(ENOMEM);
156  if (*params)
157  params++; /* skip ':' */
158  ret = set_param(ctx, info, i, param);
159  av_free(param);
160  if (ret < 0)
161  return ret;
162  }
163  }
164 
165  return 0;
166 }
167 
168 static int load_path(AVFilterContext *ctx, void **handle_ptr, const char *prefix, const char *name)
169 {
170  char *path = av_asprintf("%s%s%s", prefix, name, SLIBSUF);
171  if (!path)
172  return AVERROR(ENOMEM);
173  av_log(ctx, AV_LOG_DEBUG, "Looking for frei0r effect in '%s'.\n", path);
174  *handle_ptr = dlopen(path, RTLD_NOW|RTLD_LOCAL);
175  av_free(path);
176  return 0;
177 }
178 
180  const char *dl_name, int type)
181 {
182  Frei0rContext *s = ctx->priv;
183  f0r_init_f f0r_init;
184  f0r_get_plugin_info_f f0r_get_plugin_info;
185  f0r_plugin_info_t *pi;
186  char *path;
187  int ret = 0;
188  int i;
189  static const char* const frei0r_pathlist[] = {
190  "/usr/local/lib/frei0r-1/",
191  "/usr/lib/frei0r-1/",
192  "/usr/local/lib64/frei0r-1/",
193  "/usr/lib64/frei0r-1/"
194  };
195 
196  if (!dl_name) {
197  av_log(ctx, AV_LOG_ERROR, "No filter name provided.\n");
198  return AVERROR(EINVAL);
199  }
200 
201  /* see: http://frei0r.dyne.org/codedoc/html/group__pluglocations.html */
202  if ((path = av_strdup(getenv("FREI0R_PATH")))) {
203 #ifdef _WIN32
204  const char *separator = ";";
205 #else
206  const char *separator = ":";
207 #endif
208  char *p, *ptr = NULL;
209  for (p = path; p = av_strtok(p, separator, &ptr); p = NULL) {
210  /* add additional trailing slash in case it is missing */
211  char *p1 = av_asprintf("%s/", p);
212  if (!p1) {
213  ret = AVERROR(ENOMEM);
214  goto check_path_end;
215  }
216  ret = load_path(ctx, &s->dl_handle, p1, dl_name);
217  av_free(p1);
218  if (ret < 0)
219  goto check_path_end;
220  if (s->dl_handle)
221  break;
222  }
223 
224  check_path_end:
225  av_free(path);
226  if (ret < 0)
227  return ret;
228  }
229  if (!s->dl_handle && (path = getenv("HOME"))) {
230  char *prefix = av_asprintf("%s/.frei0r-1/lib/", path);
231  if (!prefix)
232  return AVERROR(ENOMEM);
233  ret = load_path(ctx, &s->dl_handle, prefix, dl_name);
234  av_free(prefix);
235  if (ret < 0)
236  return ret;
237  }
238  for (i = 0; !s->dl_handle && i < FF_ARRAY_ELEMS(frei0r_pathlist); i++) {
239  ret = load_path(ctx, &s->dl_handle, frei0r_pathlist[i], dl_name);
240  if (ret < 0)
241  return ret;
242  }
243  if (!s->dl_handle) {
244  av_log(ctx, AV_LOG_ERROR, "Could not find module '%s'.\n", dl_name);
245  return AVERROR(EINVAL);
246  }
247 
248  if (!(f0r_init = load_sym(ctx, "f0r_init" )) ||
249  !(f0r_get_plugin_info = load_sym(ctx, "f0r_get_plugin_info")) ||
250  !(s->get_param_info = load_sym(ctx, "f0r_get_param_info" )) ||
251  !(s->get_param_value = load_sym(ctx, "f0r_get_param_value")) ||
252  !(s->set_param_value = load_sym(ctx, "f0r_set_param_value")) ||
253  !(s->update = load_sym(ctx, "f0r_update" )) ||
254  !(s->construct = load_sym(ctx, "f0r_construct" )) ||
255  !(s->destruct = load_sym(ctx, "f0r_destruct" )) ||
256  !(s->deinit = load_sym(ctx, "f0r_deinit" )))
257  return AVERROR(EINVAL);
258 
259  if (f0r_init() < 0) {
260  av_log(ctx, AV_LOG_ERROR, "Could not init the frei0r module.\n");
261  return AVERROR(EINVAL);
262  }
263 
264  f0r_get_plugin_info(&s->plugin_info);
265  pi = &s->plugin_info;
266  if (pi->plugin_type != type) {
267  av_log(ctx, AV_LOG_ERROR,
268  "Invalid type '%s' for this plugin\n",
269  pi->plugin_type == F0R_PLUGIN_TYPE_FILTER ? "filter" :
270  pi->plugin_type == F0R_PLUGIN_TYPE_SOURCE ? "source" :
271  pi->plugin_type == F0R_PLUGIN_TYPE_MIXER2 ? "mixer2" :
272  pi->plugin_type == F0R_PLUGIN_TYPE_MIXER3 ? "mixer3" : "unknown");
273  return AVERROR(EINVAL);
274  }
275 
276  av_log(ctx, AV_LOG_VERBOSE,
277  "name:%s author:'%s' explanation:'%s' color_model:%s "
278  "frei0r_version:%d version:%d.%d num_params:%d\n",
279  pi->name, pi->author, pi->explanation,
280  pi->color_model == F0R_COLOR_MODEL_BGRA8888 ? "bgra8888" :
281  pi->color_model == F0R_COLOR_MODEL_RGBA8888 ? "rgba8888" :
282  pi->color_model == F0R_COLOR_MODEL_PACKED32 ? "packed32" : "unknown",
283  pi->frei0r_version, pi->major_version, pi->minor_version, pi->num_params);
284 
285  return 0;
286 }
287 
289 {
290  Frei0rContext *s = ctx->priv;
291 
292  return frei0r_init(ctx, s->dl_name, F0R_PLUGIN_TYPE_FILTER);
293 }
294 
296 {
297  Frei0rContext *s = ctx->priv;
298 
299  if (s->destruct && s->instance)
300  s->destruct(s->instance);
301  if (s->deinit)
302  s->deinit();
303  if (s->dl_handle)
304  dlclose(s->dl_handle);
305 }
306 
307 static int config_input_props(AVFilterLink *inlink)
308 {
309  AVFilterContext *ctx = inlink->dst;
310  Frei0rContext *s = ctx->priv;
311 
312  if (s->destruct && s->instance)
313  s->destruct(s->instance);
314  if (!(s->instance = s->construct(inlink->w, inlink->h))) {
315  av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance.\n");
316  return AVERROR(EINVAL);
317  }
318 
319  return set_params(ctx, s->params);
320 }
321 
323 {
324  Frei0rContext *s = ctx->priv;
326  int ret;
327 
328  if (s->plugin_info.color_model == F0R_COLOR_MODEL_BGRA8888) {
329  if ((ret = ff_add_format(&formats, AV_PIX_FMT_BGRA)) < 0)
330  return ret;
331  } else if (s->plugin_info.color_model == F0R_COLOR_MODEL_RGBA8888) {
332  if ((ret = ff_add_format(&formats, AV_PIX_FMT_RGBA)) < 0)
333  return ret;
334  } else { /* F0R_COLOR_MODEL_PACKED32 */
335  static const enum AVPixelFormat pix_fmts[] = {
337  };
338  formats = ff_make_format_list(pix_fmts);
339  }
340 
341  if (!formats)
342  return AVERROR(ENOMEM);
343 
344  return ff_set_common_formats(ctx, formats);
345 }
346 
347 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
348 {
349  Frei0rContext *s = inlink->dst->priv;
350  AVFilterLink *outlink = inlink->dst->outputs[0];
351  AVFrame *out;
352 
353  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
354  if (!out) {
355  av_frame_free(&in);
356  return AVERROR(ENOMEM);
357  }
358  av_frame_copy_props(out, in);
359 
360  s->update(s->instance, in->pts * av_q2d(inlink->time_base) * 1000,
361  (const uint32_t *)in->data[0],
362  (uint32_t *)out->data[0]);
363 
364  av_frame_free(&in);
365 
366  return ff_filter_frame(outlink, out);
367 }
368 
369 #define OFFSET(x) offsetof(Frei0rContext, x)
370 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
371 static const AVOption frei0r_options[] = {
372  { "filter_name", NULL, OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS },
373  { "filter_params", NULL, OFFSET(params), AV_OPT_TYPE_STRING, .flags = FLAGS },
374  { NULL }
375 };
376 
377 AVFILTER_DEFINE_CLASS(frei0r);
378 
380  {
381  .name = "default",
382  .type = AVMEDIA_TYPE_VIDEO,
383  .config_props = config_input_props,
384  .filter_frame = filter_frame,
385  },
386  { NULL }
387 };
388 
390  {
391  .name = "default",
392  .type = AVMEDIA_TYPE_VIDEO,
393  },
394  { NULL }
395 };
396 
398  .name = "frei0r",
399  .description = NULL_IF_CONFIG_SMALL("Apply a frei0r effect."),
400  .query_formats = query_formats,
401  .init = filter_init,
402  .uninit = uninit,
403  .priv_size = sizeof(Frei0rContext),
404  .priv_class = &frei0r_class,
405  .inputs = avfilter_vf_frei0r_inputs,
406  .outputs = avfilter_vf_frei0r_outputs,
407 };
408 
410 {
411  Frei0rContext *s = ctx->priv;
412 
413  s->time_base.num = s->framerate.den;
414  s->time_base.den = s->framerate.num;
415 
416  return frei0r_init(ctx, s->dl_name, F0R_PLUGIN_TYPE_SOURCE);
417 }
418 
419 static int source_config_props(AVFilterLink *outlink)
420 {
421  AVFilterContext *ctx = outlink->src;
422  Frei0rContext *s = ctx->priv;
423 
424  if (av_image_check_size(s->w, s->h, 0, ctx) < 0)
425  return AVERROR(EINVAL);
426  outlink->w = s->w;
427  outlink->h = s->h;
428  outlink->time_base = s->time_base;
429  outlink->frame_rate = av_inv_q(s->time_base);
430  outlink->sample_aspect_ratio = (AVRational){1,1};
431 
432  if (s->destruct && s->instance)
433  s->destruct(s->instance);
434  if (!(s->instance = s->construct(outlink->w, outlink->h))) {
435  av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance.\n");
436  return AVERROR(EINVAL);
437  }
438  if (!s->params) {
439  av_log(ctx, AV_LOG_ERROR, "frei0r filter parameters not set.\n");
440  return AVERROR(EINVAL);
441  }
442 
443  return set_params(ctx, s->params);
444 }
445 
446 static int source_request_frame(AVFilterLink *outlink)
447 {
448  Frei0rContext *s = outlink->src->priv;
449  AVFrame *frame = ff_get_video_buffer(outlink, outlink->w, outlink->h);
450 
451  if (!frame)
452  return AVERROR(ENOMEM);
453 
454  frame->sample_aspect_ratio = (AVRational) {1, 1};
455  frame->pts = s->pts++;
456 
457  s->update(s->instance, av_rescale_q(frame->pts, s->time_base, (AVRational){1,1000}),
458  NULL, (uint32_t *)frame->data[0]);
459 
460  return ff_filter_frame(outlink, frame);
461 }
462 
463 static const AVOption frei0r_src_options[] = {
464  { "size", "Dimensions of the generated video.", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, { .str = "320x240" }, .flags = FLAGS },
465  { "framerate", NULL, OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, { .str = "25" }, 0, INT_MAX, .flags = FLAGS },
466  { "filter_name", NULL, OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS },
467  { "filter_params", NULL, OFFSET(params), AV_OPT_TYPE_STRING, .flags = FLAGS },
468  { NULL },
469 };
470 
471 AVFILTER_DEFINE_CLASS(frei0r_src);
472 
474  {
475  .name = "default",
476  .type = AVMEDIA_TYPE_VIDEO,
477  .request_frame = source_request_frame,
478  .config_props = source_config_props
479  },
480  { NULL }
481 };
482 
484  .name = "frei0r_src",
485  .description = NULL_IF_CONFIG_SMALL("Generate a frei0r source."),
486  .priv_size = sizeof(Frei0rContext),
487  .priv_class = &frei0r_src_class,
488  .init = source_init,
489  .uninit = uninit,
491  .inputs = NULL,
492  .outputs = avfilter_vsrc_frei0r_src_outputs,
493 };
#define NULL
Definition: coverity.c:32
const char const char void * val
Definition: avisynth_c.h:771
const char * s
Definition: avisynth_c.h:768
static const AVOption frei0r_src_options[]
Definition: vf_frei0r.c:463
static av_cold int filter_init(AVFilterContext *ctx)
Definition: vf_frei0r.c:288
#define FLAGS
Definition: vf_frei0r.c:370
AVFilter ff_vf_frei0r
Definition: vf_frei0r.c:397
char * dl_name
Definition: vf_frei0r.c:70
This structure describes decoded (raw) audio or video data.
Definition: frame.h:190
AVOption.
Definition: opt.h:246
misc image utilities
Main libavfilter public API header.
Memory handling functions.
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int num
Numerator.
Definition: rational.h:59
f0r_plugin_info_t plugin_info
Definition: vf_frei0r.c:61
static enum AVSampleFormat formats[]
Definition: avresample.c:163
char * params
Definition: vf_frei0r.c:71
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:76
static const AVFilterPad avfilter_vf_frei0r_outputs[]
Definition: vf_frei0r.c:389
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
const char * name
Pad name.
Definition: internal.h:59
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1189
static const AVOption frei0r_options[]
Definition: vf_frei0r.c:371
f0r_get_param_value_f get_param_value
Definition: vf_frei0r.c:64
void(* f0r_get_param_value_f)(f0r_instance_t instance, f0r_param_t param, int param_index)
Definition: vf_frei0r.c:54
uint8_t
#define av_cold
Definition: attributes.h:82
AVOptions.
static int query_formats(AVFilterContext *ctx)
Definition: vf_frei0r.c:322
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:274
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_frei0r.c:295
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:95
static AVFrame * frame
#define height
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
static av_cold int frei0r_init(AVFilterContext *ctx, const char *dl_name, int type)
Definition: vf_frei0r.c:179
#define av_log(a,...)
int av_parse_color(uint8_t *rgba_color, const char *color_string, int slen, void *log_ctx)
Put the RGBA values that correspond to color_string in rgba_color.
Definition: parseutils.c:349
A filter pad used for either input or output.
Definition: internal.h:53
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
AVFILTER_DEFINE_CLASS(frei0r)
static int load_path(AVFilterContext *ctx, void **handle_ptr, const char *prefix, const char *name)
Definition: vf_frei0r.c:168
void(* f0r_get_plugin_info_f)(f0r_plugin_info_t *info)
Definition: vf_frei0r.c:49
AVRational time_base
Definition: vf_frei0r.c:76
f0r_instance_t(* f0r_construct_f)(unsigned int width, unsigned int height)
Definition: vf_frei0r.c:45
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:568
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:158
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:96
void * priv
private data for use by the filter
Definition: avfilter.h:322
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
GLenum GLint * params
Definition: opengl_enc.c:114
static const AVFilterPad avfilter_vsrc_frei0r_src_outputs[]
Definition: vf_frei0r.c:473
int ff_add_format(AVFilterFormats **avff, int64_t fmt)
Add fmt to the list of media formats contained in *avff.
Definition: formats.c:337
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:93
#define fail()
Definition: checkasm.h:84
char * av_get_token(const char **buf, const char *term)
Unescape the given string until a non escaped terminating char, and return the token corresponding to...
Definition: avstring.c:149
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:94
AVFilter ff_vsrc_frei0r_src
Definition: vf_frei0r.c:483
char * av_asprintf(const char *fmt,...)
Definition: avstring.c:113
void * dl_handle
Definition: vf_frei0r.c:59
common internal API header
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
Definition: imgutils.c:251
uint64_t pts
Definition: vf_frei0r.c:77
#define width
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
static int source_config_props(AVFilterLink *outlink)
Definition: vf_frei0r.c:419
f0r_get_param_info_f get_param_info
Definition: vf_frei0r.c:63
AVFormatContext * ctx
Definition: movenc.c:48
void(* f0r_deinit_f)(void)
Definition: vf_frei0r.c:47
f0r_destruct_f destruct
Definition: vf_frei0r.c:67
f0r_update_f update
Definition: vf_frei0r.c:58
static const AVFilterPad outputs[]
Definition: af_afftfilt.c:386
static int config_input_props(AVFilterLink *inlink)
Definition: vf_frei0r.c:307
static int set_params(AVFilterContext *ctx, const char *params)
Definition: vf_frei0r.c:138
#define FF_ARRAY_ELEMS(a)
double av_strtod(const char *numstr, char **tail)
Parse the string in numstr and return its value as a double.
Definition: eval.c:98
void(* f0r_update2_f)(f0r_instance_t instance, double time, const uint32_t *inframe1, const uint32_t *inframe2, const uint32_t *inframe3, uint32_t *outframe)
Definition: vf_frei0r.c:52
static const AVFilterPad inputs[]
Definition: af_afftfilt.c:376
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:267
AVRational framerate
Definition: vf_frei0r.c:72
f0r_construct_f construct
Definition: vf_frei0r.c:66
static const AVFilterPad avfilter_vf_frei0r_inputs[]
Definition: vf_frei0r.c:379
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:269
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
GLint GLenum type
Definition: opengl_enc.c:105
#define OFFSET(x)
Definition: vf_frei0r.c:369
void(* f0r_get_param_info_f)(f0r_param_info_t *info, int param_index)
Definition: vf_frei0r.c:50
f0r_instance_t instance
Definition: vf_frei0r.c:60
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
int index
Definition: gxfenc.c:89
Rational number (pair of numerator and denominator).
Definition: rational.h:58
void(* f0r_set_param_value_f)(f0r_instance_t instance, f0r_param_t param, int param_index)
Definition: vf_frei0r.c:53
offset must point to AVRational
Definition: opt.h:236
const char * name
Filter name.
Definition: avfilter.h:148
offset must point to two consecutive integers
Definition: opt.h:233
misc parsing utilities
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:319
void(* f0r_destruct_f)(f0r_instance_t instance)
Definition: vf_frei0r.c:46
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:204
char * av_strtok(char *s, const char *delim, char **saveptr)
Split the string into several tokens which can be accessed by successive calls to av_strtok()...
Definition: avstring.c:184
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_frei0r.c:347
int(* f0r_init_f)(void)
Definition: vf_frei0r.c:48
int
common internal and external API header
f0r_set_param_value_f set_param_value
Definition: vf_frei0r.c:65
static void * load_sym(AVFilterContext *ctx, const char *sym_name)
Definition: vf_frei0r.c:80
static int set_param(AVFilterContext *ctx, f0r_param_info_t info, int index, char *param)
Definition: vf_frei0r.c:89
int den
Denominator.
Definition: rational.h:60
#define av_free(p)
A list of supported formats for one end of a filter link.
Definition: formats.h:64
void(* f0r_update_f)(f0r_instance_t instance, double time, const uint32_t *inframe, uint32_t *outframe)
Definition: vf_frei0r.c:51
An instance of a filter.
Definition: avfilter.h:307
static int source_request_frame(AVFilterLink *outlink)
Definition: vf_frei0r.c:446
FILE * out
Definition: movenc.c:54
f0r_deinit_f deinit
Definition: vf_frei0r.c:68
internal API functions
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
static av_cold int source_init(AVFilterContext *ctx)
Definition: vf_frei0r.c:409
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:591
simple arithmetic expression evaluator
const char * name
Definition: opengl_enc.c:103