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vf_libopencv.c
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1 /*
2  * Copyright (c) 2010 Stefano Sabatini
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 /**
22  * @file
23  * libopencv wrapper functions
24  */
25 
26 #include <opencv/cv.h>
27 #include <opencv/cxcore.h>
28 #include "libavutil/avstring.h"
29 #include "libavutil/common.h"
30 #include "libavutil/file.h"
31 #include "libavutil/opt.h"
32 #include "avfilter.h"
33 #include "formats.h"
34 #include "internal.h"
35 #include "video.h"
36 
37 static void fill_iplimage_from_frame(IplImage *img, const AVFrame *frame, enum AVPixelFormat pixfmt)
38 {
39  IplImage *tmpimg;
40  int depth, channels_nb;
41 
42  if (pixfmt == AV_PIX_FMT_GRAY8) { depth = IPL_DEPTH_8U; channels_nb = 1; }
43  else if (pixfmt == AV_PIX_FMT_BGRA) { depth = IPL_DEPTH_8U; channels_nb = 4; }
44  else if (pixfmt == AV_PIX_FMT_BGR24) { depth = IPL_DEPTH_8U; channels_nb = 3; }
45  else return;
46 
47  tmpimg = cvCreateImageHeader((CvSize){frame->width, frame->height}, depth, channels_nb);
48  *img = *tmpimg;
49  img->imageData = img->imageDataOrigin = frame->data[0];
50  img->dataOrder = IPL_DATA_ORDER_PIXEL;
51  img->origin = IPL_ORIGIN_TL;
52  img->widthStep = frame->linesize[0];
53 }
54 
55 static void fill_frame_from_iplimage(AVFrame *frame, const IplImage *img, enum AVPixelFormat pixfmt)
56 {
57  frame->linesize[0] = img->widthStep;
58  frame->data[0] = img->imageData;
59 }
60 
62 {
63  static const enum AVPixelFormat pix_fmts[] = {
65  };
66  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
67  if (!fmts_list)
68  return AVERROR(ENOMEM);
69  return ff_set_common_formats(ctx, fmts_list);
70 }
71 
72 typedef struct OCVContext {
73  const AVClass *class;
74  char *name;
75  char *params;
76  int (*init)(AVFilterContext *ctx, const char *args);
78  void (*end_frame_filter)(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg);
79  void *priv;
80 } OCVContext;
81 
82 typedef struct SmoothContext {
83  int type;
84  int param1, param2;
85  double param3, param4;
87 
88 static av_cold int smooth_init(AVFilterContext *ctx, const char *args)
89 {
90  OCVContext *s = ctx->priv;
91  SmoothContext *smooth = s->priv;
92  char type_str[128] = "gaussian";
93 
94  smooth->param1 = 3;
95  smooth->param2 = 0;
96  smooth->param3 = 0.0;
97  smooth->param4 = 0.0;
98 
99  if (args)
100  sscanf(args, "%127[^|]|%d|%d|%lf|%lf", type_str, &smooth->param1, &smooth->param2, &smooth->param3, &smooth->param4);
101 
102  if (!strcmp(type_str, "blur" )) smooth->type = CV_BLUR;
103  else if (!strcmp(type_str, "blur_no_scale")) smooth->type = CV_BLUR_NO_SCALE;
104  else if (!strcmp(type_str, "median" )) smooth->type = CV_MEDIAN;
105  else if (!strcmp(type_str, "gaussian" )) smooth->type = CV_GAUSSIAN;
106  else if (!strcmp(type_str, "bilateral" )) smooth->type = CV_BILATERAL;
107  else {
108  av_log(ctx, AV_LOG_ERROR, "Smoothing type '%s' unknown.\n", type_str);
109  return AVERROR(EINVAL);
110  }
111 
112  if (smooth->param1 < 0 || !(smooth->param1%2)) {
113  av_log(ctx, AV_LOG_ERROR,
114  "Invalid value '%d' for param1, it has to be a positive odd number\n",
115  smooth->param1);
116  return AVERROR(EINVAL);
117  }
118  if ((smooth->type == CV_BLUR || smooth->type == CV_BLUR_NO_SCALE || smooth->type == CV_GAUSSIAN) &&
119  (smooth->param2 < 0 || (smooth->param2 && !(smooth->param2%2)))) {
120  av_log(ctx, AV_LOG_ERROR,
121  "Invalid value '%d' for param2, it has to be zero or a positive odd number\n",
122  smooth->param2);
123  return AVERROR(EINVAL);
124  }
125 
126  av_log(ctx, AV_LOG_VERBOSE, "type:%s param1:%d param2:%d param3:%f param4:%f\n",
127  type_str, smooth->param1, smooth->param2, smooth->param3, smooth->param4);
128  return 0;
129 }
130 
131 static void smooth_end_frame_filter(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg)
132 {
133  OCVContext *s = ctx->priv;
134  SmoothContext *smooth = s->priv;
135  cvSmooth(inimg, outimg, smooth->type, smooth->param1, smooth->param2, smooth->param3, smooth->param4);
136 }
137 
138 static int read_shape_from_file(int *cols, int *rows, int **values, const char *filename,
139  void *log_ctx)
140 {
141  uint8_t *buf, *p, *pend;
142  size_t size;
143  int ret, i, j, w;
144 
145  if ((ret = av_file_map(filename, &buf, &size, 0, log_ctx)) < 0)
146  return ret;
147 
148  /* prescan file to get the number of lines and the maximum width */
149  w = 0;
150  for (i = 0; i < size; i++) {
151  if (buf[i] == '\n') {
152  if (*rows == INT_MAX) {
153  av_log(log_ctx, AV_LOG_ERROR, "Overflow on the number of rows in the file\n");
154  return AVERROR_INVALIDDATA;
155  }
156  ++(*rows);
157  *cols = FFMAX(*cols, w);
158  w = 0;
159  } else if (w == INT_MAX) {
160  av_log(log_ctx, AV_LOG_ERROR, "Overflow on the number of columns in the file\n");
161  return AVERROR_INVALIDDATA;
162  }
163  w++;
164  }
165  if (*rows > (SIZE_MAX / sizeof(int) / *cols)) {
166  av_log(log_ctx, AV_LOG_ERROR, "File with size %dx%d is too big\n",
167  *rows, *cols);
168  return AVERROR_INVALIDDATA;
169  }
170  if (!(*values = av_mallocz_array(sizeof(int) * *rows, *cols)))
171  return AVERROR(ENOMEM);
172 
173  /* fill *values */
174  p = buf;
175  pend = buf + size-1;
176  for (i = 0; i < *rows; i++) {
177  for (j = 0;; j++) {
178  if (p > pend || *p == '\n') {
179  p++;
180  break;
181  } else
182  (*values)[*cols*i + j] = !!av_isgraph(*(p++));
183  }
184  }
185  av_file_unmap(buf, size);
186 
187 #ifdef DEBUG
188  {
189  char *line;
190  if (!(line = av_malloc(*cols + 1)))
191  return AVERROR(ENOMEM);
192  for (i = 0; i < *rows; i++) {
193  for (j = 0; j < *cols; j++)
194  line[j] = (*values)[i * *cols + j] ? '@' : ' ';
195  line[j] = 0;
196  av_log(log_ctx, AV_LOG_DEBUG, "%3d: %s\n", i, line);
197  }
198  av_free(line);
199  }
200 #endif
201 
202  return 0;
203 }
204 
205 static int parse_iplconvkernel(IplConvKernel **kernel, char *buf, void *log_ctx)
206 {
207  char shape_filename[128] = "", shape_str[32] = "rect";
208  int cols = 0, rows = 0, anchor_x = 0, anchor_y = 0, shape = CV_SHAPE_RECT;
209  int *values = NULL, ret = 0;
210 
211  sscanf(buf, "%dx%d+%dx%d/%32[^=]=%127s", &cols, &rows, &anchor_x, &anchor_y, shape_str, shape_filename);
212 
213  if (!strcmp(shape_str, "rect" )) shape = CV_SHAPE_RECT;
214  else if (!strcmp(shape_str, "cross" )) shape = CV_SHAPE_CROSS;
215  else if (!strcmp(shape_str, "ellipse")) shape = CV_SHAPE_ELLIPSE;
216  else if (!strcmp(shape_str, "custom" )) {
217  shape = CV_SHAPE_CUSTOM;
218  if ((ret = read_shape_from_file(&cols, &rows, &values, shape_filename, log_ctx)) < 0)
219  return ret;
220  } else {
221  av_log(log_ctx, AV_LOG_ERROR,
222  "Shape unspecified or type '%s' unknown.\n", shape_str);
223  ret = AVERROR(EINVAL);
224  goto out;
225  }
226 
227  if (rows <= 0 || cols <= 0) {
228  av_log(log_ctx, AV_LOG_ERROR,
229  "Invalid non-positive values for shape size %dx%d\n", cols, rows);
230  ret = AVERROR(EINVAL);
231  goto out;
232  }
233 
234  if (anchor_x < 0 || anchor_y < 0 || anchor_x >= cols || anchor_y >= rows) {
235  av_log(log_ctx, AV_LOG_ERROR,
236  "Shape anchor %dx%d is not inside the rectangle with size %dx%d.\n",
237  anchor_x, anchor_y, cols, rows);
238  ret = AVERROR(EINVAL);
239  goto out;
240  }
241 
242  *kernel = cvCreateStructuringElementEx(cols, rows, anchor_x, anchor_y, shape, values);
243  if (!*kernel) {
244  ret = AVERROR(ENOMEM);
245  goto out;
246  }
247 
248  av_log(log_ctx, AV_LOG_VERBOSE, "Structuring element: w:%d h:%d x:%d y:%d shape:%s\n",
249  rows, cols, anchor_x, anchor_y, shape_str);
250 out:
251  av_freep(&values);
252  return ret;
253 }
254 
255 typedef struct DilateContext {
257  IplConvKernel *kernel;
258 } DilateContext;
259 
260 static av_cold int dilate_init(AVFilterContext *ctx, const char *args)
261 {
262  OCVContext *s = ctx->priv;
263  DilateContext *dilate = s->priv;
264  char default_kernel_str[] = "3x3+0x0/rect";
265  char *kernel_str = NULL;
266  const char *buf = args;
267  int ret;
268 
269  if (args) {
270  kernel_str = av_get_token(&buf, "|");
271 
272  if (!kernel_str)
273  return AVERROR(ENOMEM);
274  }
275 
276  ret = parse_iplconvkernel(&dilate->kernel,
277  (!kernel_str || !*kernel_str) ? default_kernel_str
278  : kernel_str,
279  ctx);
280  av_free(kernel_str);
281  if (ret < 0)
282  return ret;
283 
284  if (!buf || sscanf(buf, "|%d", &dilate->nb_iterations) != 1)
285  dilate->nb_iterations = 1;
286  av_log(ctx, AV_LOG_VERBOSE, "iterations_nb:%d\n", dilate->nb_iterations);
287  if (dilate->nb_iterations <= 0) {
288  av_log(ctx, AV_LOG_ERROR, "Invalid non-positive value '%d' for nb_iterations\n",
289  dilate->nb_iterations);
290  return AVERROR(EINVAL);
291  }
292  return 0;
293 }
294 
296 {
297  OCVContext *s = ctx->priv;
298  DilateContext *dilate = s->priv;
299 
300  cvReleaseStructuringElement(&dilate->kernel);
301 }
302 
303 static void dilate_end_frame_filter(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg)
304 {
305  OCVContext *s = ctx->priv;
306  DilateContext *dilate = s->priv;
307  cvDilate(inimg, outimg, dilate->kernel, dilate->nb_iterations);
308 }
309 
310 static void erode_end_frame_filter(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg)
311 {
312  OCVContext *s = ctx->priv;
313  DilateContext *dilate = s->priv;
314  cvErode(inimg, outimg, dilate->kernel, dilate->nb_iterations);
315 }
316 
317 typedef struct OCVFilterEntry {
318  const char *name;
319  size_t priv_size;
320  int (*init)(AVFilterContext *ctx, const char *args);
322  void (*end_frame_filter)(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg);
324 
328  { "smooth", sizeof(SmoothContext), smooth_init, NULL, smooth_end_frame_filter },
329 };
330 
331 static av_cold int init(AVFilterContext *ctx)
332 {
333  OCVContext *s = ctx->priv;
334  int i;
335 
336  if (!s->name) {
337  av_log(ctx, AV_LOG_ERROR, "No libopencv filter name specified\n");
338  return AVERROR(EINVAL);
339  }
340  for (i = 0; i < FF_ARRAY_ELEMS(ocv_filter_entries); i++) {
341  const OCVFilterEntry *entry = &ocv_filter_entries[i];
342  if (!strcmp(s->name, entry->name)) {
343  s->init = entry->init;
344  s->uninit = entry->uninit;
346 
347  if (!(s->priv = av_mallocz(entry->priv_size)))
348  return AVERROR(ENOMEM);
349  return s->init(ctx, s->params);
350  }
351  }
352 
353  av_log(ctx, AV_LOG_ERROR, "No libopencv filter named '%s'\n", s->name);
354  return AVERROR(EINVAL);
355 }
356 
357 static av_cold void uninit(AVFilterContext *ctx)
358 {
359  OCVContext *s = ctx->priv;
360 
361  if (s->uninit)
362  s->uninit(ctx);
363  av_freep(&s->priv);
364 }
365 
366 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
367 {
368  AVFilterContext *ctx = inlink->dst;
369  OCVContext *s = ctx->priv;
370  AVFilterLink *outlink= inlink->dst->outputs[0];
371  AVFrame *out;
372  IplImage inimg, outimg;
373 
374  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
375  if (!out) {
376  av_frame_free(&in);
377  return AVERROR(ENOMEM);
378  }
379  av_frame_copy_props(out, in);
380 
381  fill_iplimage_from_frame(&inimg , in , inlink->format);
382  fill_iplimage_from_frame(&outimg, out, inlink->format);
383  s->end_frame_filter(ctx, &inimg, &outimg);
384  fill_frame_from_iplimage(out, &outimg, inlink->format);
385 
386  av_frame_free(&in);
387 
388  return ff_filter_frame(outlink, out);
389 }
390 
391 #define OFFSET(x) offsetof(OCVContext, x)
392 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
393 static const AVOption ocv_options[] = {
394  { "filter_name", NULL, OFFSET(name), AV_OPT_TYPE_STRING, .flags = FLAGS },
395  { "filter_params", NULL, OFFSET(params), AV_OPT_TYPE_STRING, .flags = FLAGS },
396  { NULL }
397 };
398 
400 
402  {
403  .name = "default",
404  .type = AVMEDIA_TYPE_VIDEO,
405  .filter_frame = filter_frame,
406  },
407  { NULL }
408 };
409 
411  {
412  .name = "default",
413  .type = AVMEDIA_TYPE_VIDEO,
414  },
415  { NULL }
416 };
417 
419  .name = "ocv",
420  .description = NULL_IF_CONFIG_SMALL("Apply transform using libopencv."),
421  .priv_size = sizeof(OCVContext),
422  .priv_class = &ocv_class,
424  .init = init,
425  .uninit = uninit,
426  .inputs = avfilter_vf_ocv_inputs,
427  .outputs = avfilter_vf_ocv_outputs,
428 };
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:631
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static int parse_iplconvkernel(IplConvKernel **kernel, char *buf, void *log_ctx)
Definition: vf_libopencv.c:205
char * name
Definition: vf_libopencv.c:74
This structure describes decoded (raw) audio or video data.
Definition: frame.h:171
AVOption.
Definition: opt.h:255
static const AVFilterPad outputs[]
Definition: af_ashowinfo.c:248
Main libavfilter public API header.
AVFILTER_DEFINE_CLASS(ocv)
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:109
void(* uninit)(AVFilterContext *ctx)
Definition: vf_libopencv.c:321
int av_isgraph(int c)
Locale-independent conversion of ASCII isgraph.
Definition: avstring.c:325
#define FLAGS
Definition: vf_libopencv.c:392
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_libopencv.c:366
#define img
const char * name
Pad name.
Definition: internal.h:67
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1158
static void smooth_end_frame_filter(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg)
Definition: vf_libopencv.c:131
uint8_t
#define av_cold
Definition: attributes.h:74
#define av_malloc(s)
AVOptions.
static av_cold void dilate_uninit(AVFilterContext *ctx)
Definition: vf_libopencv.c:295
void(* end_frame_filter)(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg)
Definition: vf_libopencv.c:78
static AVFrame * frame
Misc file utilities.
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
ptrdiff_t size
Definition: opengl_enc.c:101
#define av_log(a,...)
int(* init)(AVFilterContext *ctx, const char *args)
Definition: vf_libopencv.c:76
#define OFFSET(x)
Definition: vf_libopencv.c:391
A filter pad used for either input or output.
Definition: internal.h:61
int width
width and height of the video frame
Definition: frame.h:220
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
void av_file_unmap(uint8_t *bufptr, size_t size)
Unmap or free the buffer bufptr created by av_file_map().
Definition: file.c:129
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:542
int av_file_map(const char *filename, uint8_t **bufptr, size_t *size, int log_offset, void *log_ctx)
Read the file with name filename, and put its content in a newly allocated buffer or map it with mmap...
Definition: file.c:49
#define AVERROR(e)
Definition: error.h:43
static av_cold int init(AVFilterContext *ctx)
Definition: vf_libopencv.c:331
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:148
const char * name
Definition: vf_libopencv.c:318
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:175
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:97
void * priv
private data for use by the filter
Definition: avfilter.h:654
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
GLenum GLint * params
Definition: opengl_enc.c:114
Definition: graph2dot.c:48
#define FFMAX(a, b)
Definition: common.h:64
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
int depth
Definition: v4l.c:62
static void dilate_end_frame_filter(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg)
Definition: vf_libopencv.c:303
char * params
Definition: vf_libopencv.c:75
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
static const AVFilterPad avfilter_vf_ocv_outputs[]
Definition: vf_libopencv.c:410
static void fill_iplimage_from_frame(IplImage *img, const AVFrame *frame, enum AVPixelFormat pixfmt)
Definition: vf_libopencv.c:37
AVS_Value args
Definition: avisynth_c.h:562
void(* end_frame_filter)(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg)
Definition: vf_libopencv.c:322
void(* uninit)(AVFilterContext *ctx)
Definition: vf_libopencv.c:77
IplConvKernel * kernel
Definition: vf_libopencv.c:257
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:66
#define FF_ARRAY_ELEMS(a)
void * priv
Definition: vf_libopencv.c:79
static const AVFilterPad avfilter_vf_ocv_inputs[]
Definition: vf_libopencv.c:401
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:199
static av_cold int dilate_init(AVFilterContext *ctx, const char *args)
Definition: vf_libopencv.c:260
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
AVFilter ff_vf_ocv
Definition: vf_libopencv.c:418
void * buf
Definition: avisynth_c.h:553
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_libopencv.c:357
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:470
static const AVFilterPad inputs[]
Definition: af_ashowinfo.c:239
const char * name
Filter name.
Definition: avfilter.h:474
static int read_shape_from_file(int *cols, int *rows, int **values, const char *filename, void *log_ctx)
Definition: vf_libopencv.c:138
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:648
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:209
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:182
static void erode_end_frame_filter(AVFilterContext *ctx, IplImage *inimg, IplImage *outimg)
Definition: vf_libopencv.c:310
static const AVOption ocv_options[]
Definition: vf_libopencv.c:393
Y , 8bpp.
Definition: pixfmt.h:71
common internal and external API header
int(* init)(AVFilterContext *ctx, const char *args)
Definition: vf_libopencv.c:320
static int query_formats(AVFilterContext *ctx)
Definition: vf_libopencv.c:61
#define av_free(p)
A list of supported formats for one end of a filter link.
Definition: formats.h:64
static av_cold int smooth_init(AVFilterContext *ctx, const char *args)
Definition: vf_libopencv.c:88
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-> out
An instance of a filter.
Definition: avfilter.h:633
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:228
int height
Definition: frame.h:220
#define av_freep(p)
static void fill_frame_from_iplimage(AVFrame *frame, const IplImage *img, enum AVPixelFormat pixfmt)
Definition: vf_libopencv.c:55
internal API functions
static const OCVFilterEntry ocv_filter_entries[]
Definition: vf_libopencv.c:325
AVPixelFormat
Pixel format.
Definition: pixfmt.h:61
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:252
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:553
const char * name
Definition: opengl_enc.c:103