FFmpeg
vf_displace.c
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1 /*
2  * Copyright (c) 2013 Paul B Mahol
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 #include "libavutil/imgutils.h"
22 #include "libavutil/pixdesc.h"
23 #include "libavutil/opt.h"
24 #include "avfilter.h"
25 #include "formats.h"
26 #include "framesync.h"
27 #include "internal.h"
28 #include "video.h"
29 
30 enum EdgeMode {
36 };
37 
38 typedef struct DisplaceContext {
39  const AVClass *class;
40  int width[4], height[4];
41  enum EdgeMode edge;
42  int nb_planes;
44  int step;
47 
48  void (*displace)(struct DisplaceContext *s, const AVFrame *in,
49  const AVFrame *xpic, const AVFrame *ypic, AVFrame *out);
51 
52 #define OFFSET(x) offsetof(DisplaceContext, x)
53 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
54 
55 static const AVOption displace_options[] = {
56  { "edge", "set edge mode", OFFSET(edge), AV_OPT_TYPE_INT, {.i64=EDGE_SMEAR}, 0, EDGE_NB-1, FLAGS, "edge" },
57  { "blank", "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_BLANK}, 0, 0, FLAGS, "edge" },
58  { "smear", "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_SMEAR}, 0, 0, FLAGS, "edge" },
59  { "wrap" , "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_WRAP}, 0, 0, FLAGS, "edge" },
60  { "mirror" , "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_MIRROR}, 0, 0, FLAGS, "edge" },
61  { NULL }
62 };
63 
65 
67 {
68  static const enum AVPixelFormat pix_fmts[] = {
79  };
80 
81  return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
82 }
83 
85  const AVFrame *xpic, const AVFrame *ypic,
86  AVFrame *out)
87 {
88  int plane, x, y;
89 
90  for (plane = 0; plane < s->nb_planes; plane++) {
91  const int h = s->height[plane];
92  const int w = s->width[plane];
93  const int dlinesize = out->linesize[plane];
94  const int slinesize = in->linesize[plane];
95  const int xlinesize = xpic->linesize[plane];
96  const int ylinesize = ypic->linesize[plane];
97  const uint8_t *src = in->data[plane];
98  const uint8_t *ysrc = ypic->data[plane];
99  const uint8_t *xsrc = xpic->data[plane];
100  uint8_t *dst = out->data[plane];
101  const uint8_t blank = s->blank[plane];
102 
103  for (y = 0; y < h; y++) {
104  switch (s->edge) {
105  case EDGE_BLANK:
106  for (x = 0; x < w; x++) {
107  int Y = y + ysrc[x] - 128;
108  int X = x + xsrc[x] - 128;
109 
110  if (Y < 0 || Y >= h || X < 0 || X >= w)
111  dst[x] = blank;
112  else
113  dst[x] = src[Y * slinesize + X];
114  }
115  break;
116  case EDGE_SMEAR:
117  for (x = 0; x < w; x++) {
118  int Y = av_clip(y + ysrc[x] - 128, 0, h - 1);
119  int X = av_clip(x + xsrc[x] - 128, 0, w - 1);
120  dst[x] = src[Y * slinesize + X];
121  }
122  break;
123  case EDGE_WRAP:
124  for (x = 0; x < w; x++) {
125  int Y = (y + ysrc[x] - 128) % h;
126  int X = (x + xsrc[x] - 128) % w;
127 
128  if (Y < 0)
129  Y += h;
130  if (X < 0)
131  X += w;
132  dst[x] = src[Y * slinesize + X];
133  }
134  break;
135  case EDGE_MIRROR:
136  for (x = 0; x < w; x++) {
137  int Y = y + ysrc[x] - 128;
138  int X = x + xsrc[x] - 128;
139 
140  if (Y < 0)
141  Y = (-Y) % h;
142  if (X < 0)
143  X = (-X) % w;
144  if (Y >= h)
145  Y = h - (Y % h) - 1;
146  if (X >= w)
147  X = w - (X % w) - 1;
148  dst[x] = src[Y * slinesize + X];
149  }
150  break;
151  }
152 
153  ysrc += ylinesize;
154  xsrc += xlinesize;
155  dst += dlinesize;
156  }
157  }
158 }
159 
161  const AVFrame *xpic, const AVFrame *ypic,
162  AVFrame *out)
163 {
164  const int step = s->step;
165  const int h = s->height[0];
166  const int w = s->width[0];
167  const int dlinesize = out->linesize[0];
168  const int slinesize = in->linesize[0];
169  const int xlinesize = xpic->linesize[0];
170  const int ylinesize = ypic->linesize[0];
171  const uint8_t *src = in->data[0];
172  const uint8_t *ysrc = ypic->data[0];
173  const uint8_t *xsrc = xpic->data[0];
174  const uint8_t *blank = s->blank;
175  uint8_t *dst = out->data[0];
176  int c, x, y;
177 
178  for (y = 0; y < h; y++) {
179  switch (s->edge) {
180  case EDGE_BLANK:
181  for (x = 0; x < w; x++) {
182  for (c = 0; c < s->nb_components; c++) {
183  int Y = y + (ysrc[x * step + c] - 128);
184  int X = x + (xsrc[x * step + c] - 128);
185 
186  if (Y < 0 || Y >= h || X < 0 || X >= w)
187  dst[x * step + c] = blank[c];
188  else
189  dst[x * step + c] = src[Y * slinesize + X * step + c];
190  }
191  }
192  break;
193  case EDGE_SMEAR:
194  for (x = 0; x < w; x++) {
195  for (c = 0; c < s->nb_components; c++) {
196  int Y = av_clip(y + (ysrc[x * step + c] - 128), 0, h - 1);
197  int X = av_clip(x + (xsrc[x * step + c] - 128), 0, w - 1);
198 
199  dst[x * step + c] = src[Y * slinesize + X * step + c];
200  }
201  }
202  break;
203  case EDGE_WRAP:
204  for (x = 0; x < w; x++) {
205  for (c = 0; c < s->nb_components; c++) {
206  int Y = (y + (ysrc[x * step + c] - 128)) % h;
207  int X = (x + (xsrc[x * step + c] - 128)) % w;
208 
209  if (Y < 0)
210  Y += h;
211  if (X < 0)
212  X += w;
213  dst[x * step + c] = src[Y * slinesize + X * step + c];
214  }
215  }
216  break;
217  case EDGE_MIRROR:
218  for (x = 0; x < w; x++) {
219  for (c = 0; c < s->nb_components; c++) {
220  int Y = y + ysrc[x * step + c] - 128;
221  int X = x + xsrc[x * step + c] - 128;
222 
223  if (Y < 0)
224  Y = (-Y) % h;
225  if (X < 0)
226  X = (-X) % w;
227  if (Y >= h)
228  Y = h - (Y % h) - 1;
229  if (X >= w)
230  X = w - (X % w) - 1;
231  dst[x * step + c] = src[Y * slinesize + X * step + c];
232  }
233  }
234  break;
235  }
236 
237  ysrc += ylinesize;
238  xsrc += xlinesize;
239  dst += dlinesize;
240  }
241 }
242 
244 {
245  AVFilterContext *ctx = fs->parent;
246  DisplaceContext *s = fs->opaque;
247  AVFilterLink *outlink = ctx->outputs[0];
248  AVFrame *out, *in, *xpic, *ypic;
249  int ret;
250 
251  if ((ret = ff_framesync_get_frame(&s->fs, 0, &in, 0)) < 0 ||
252  (ret = ff_framesync_get_frame(&s->fs, 1, &xpic, 0)) < 0 ||
253  (ret = ff_framesync_get_frame(&s->fs, 2, &ypic, 0)) < 0)
254  return ret;
255 
256  if (ctx->is_disabled) {
257  out = av_frame_clone(in);
258  if (!out)
259  return AVERROR(ENOMEM);
260  } else {
261  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
262  if (!out)
263  return AVERROR(ENOMEM);
264  av_frame_copy_props(out, in);
265 
266  s->displace(s, in, xpic, ypic, out);
267  }
268  out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
269 
270  return ff_filter_frame(outlink, out);
271 }
272 
274 {
275  AVFilterContext *ctx = inlink->dst;
276  DisplaceContext *s = ctx->priv;
278  int vsub, hsub;
279 
281  s->nb_components = desc->nb_components;
282 
283  if (s->nb_planes > 1 || s->nb_components == 1)
285  else
287 
288  if (!(desc->flags & AV_PIX_FMT_FLAG_RGB)) {
289  s->blank[1] = s->blank[2] = 128;
290  s->blank[0] = 16;
291  }
292 
293  s->step = av_get_padded_bits_per_pixel(desc) >> 3;
294  hsub = desc->log2_chroma_w;
295  vsub = desc->log2_chroma_h;
296  s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
297  s->height[0] = s->height[3] = inlink->h;
298  s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
299  s->width[0] = s->width[3] = inlink->w;
300 
301  return 0;
302 }
303 
304 static int config_output(AVFilterLink *outlink)
305 {
306  AVFilterContext *ctx = outlink->src;
307  DisplaceContext *s = ctx->priv;
308  AVFilterLink *srclink = ctx->inputs[0];
309  AVFilterLink *xlink = ctx->inputs[1];
310  AVFilterLink *ylink = ctx->inputs[2];
311  FFFrameSyncIn *in;
312  int ret;
313 
314  if (srclink->format != xlink->format ||
315  srclink->format != ylink->format) {
316  av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
317  return AVERROR(EINVAL);
318  }
319  if (srclink->w != xlink->w ||
320  srclink->h != xlink->h ||
321  srclink->w != ylink->w ||
322  srclink->h != ylink->h) {
323  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
324  "(size %dx%d) do not match the corresponding "
325  "second input link %s parameters (%dx%d) "
326  "and/or third input link %s parameters (%dx%d)\n",
327  ctx->input_pads[0].name, srclink->w, srclink->h,
328  ctx->input_pads[1].name, xlink->w, xlink->h,
329  ctx->input_pads[2].name, ylink->w, ylink->h);
330  return AVERROR(EINVAL);
331  }
332 
333  outlink->w = srclink->w;
334  outlink->h = srclink->h;
335  outlink->sample_aspect_ratio = srclink->sample_aspect_ratio;
336  outlink->frame_rate = srclink->frame_rate;
337 
338  ret = ff_framesync_init(&s->fs, ctx, 3);
339  if (ret < 0)
340  return ret;
341 
342  in = s->fs.in;
343  in[0].time_base = srclink->time_base;
344  in[1].time_base = xlink->time_base;
345  in[2].time_base = ylink->time_base;
346  in[0].sync = 2;
347  in[0].before = EXT_STOP;
348  in[0].after = EXT_STOP;
349  in[1].sync = 1;
350  in[1].before = EXT_NULL;
351  in[1].after = EXT_INFINITY;
352  in[2].sync = 1;
353  in[2].before = EXT_NULL;
354  in[2].after = EXT_INFINITY;
355  s->fs.opaque = s;
357 
358  ret = ff_framesync_configure(&s->fs);
359  outlink->time_base = s->fs.time_base;
360 
361  return ret;
362 }
363 
365 {
366  DisplaceContext *s = ctx->priv;
367  return ff_framesync_activate(&s->fs);
368 }
369 
371 {
372  DisplaceContext *s = ctx->priv;
373 
374  ff_framesync_uninit(&s->fs);
375 }
376 
377 static const AVFilterPad displace_inputs[] = {
378  {
379  .name = "source",
380  .type = AVMEDIA_TYPE_VIDEO,
381  .config_props = config_input,
382  },
383  {
384  .name = "xmap",
385  .type = AVMEDIA_TYPE_VIDEO,
386  },
387  {
388  .name = "ymap",
389  .type = AVMEDIA_TYPE_VIDEO,
390  },
391  { NULL }
392 };
393 
394 static const AVFilterPad displace_outputs[] = {
395  {
396  .name = "default",
397  .type = AVMEDIA_TYPE_VIDEO,
398  .config_props = config_output,
399  },
400  { NULL }
401 };
402 
404  .name = "displace",
405  .description = NULL_IF_CONFIG_SMALL("Displace pixels."),
406  .priv_size = sizeof(DisplaceContext),
407  .uninit = uninit,
409  .activate = activate,
410  .inputs = displace_inputs,
411  .outputs = displace_outputs,
412  .priv_class = &displace_class,
414 };
int plane
Definition: avisynth_c.h:384
#define NULL
Definition: coverity.c:32
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2522
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
AVOption.
Definition: opt.h:246
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2562
AVFilter ff_vf_displace
Definition: vf_displace.c:403
Main libavfilter public API header.
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
const char * desc
Definition: nvenc.c:68
static const AVOption displace_options[]
Definition: vf_displace.c:55
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
Definition: vf_addroi.c:26
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:117
packed BGR 8:8:8, 32bpp, XBGRXBGR... X=unused/undefined
Definition: pixfmt.h:239
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:99
#define src
Definition: vp8dsp.c:254
int is_disabled
the enabled state from the last expression evaluation
Definition: avfilter.h:385
int64_t pts
Timestamp of the current event.
Definition: framesync.h:167
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
enum FFFrameSyncExtMode before
Extrapolation mode for timestamps before the first frame.
Definition: framesync.h:86
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:60
AVFilterContext * parent
Parent filter context.
Definition: framesync.h:152
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:346
static int activate(AVFilterContext *ctx)
Definition: vf_displace.c:364
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1093
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
uint8_t
#define av_cold
Definition: attributes.h:82
packed RGB 8:8:8, 32bpp, RGBXRGBX... X=unused/undefined
Definition: pixfmt.h:238
AVOptions.
AVFILTER_DEFINE_CLASS(displace)
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
static int config_output(AVFilterLink *outlink)
Definition: vf_displace.c:304
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:388
FFFrameSyncIn * in
Pointer to array of inputs.
Definition: framesync.h:203
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
Definition: pixfmt.h:94
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
Definition: pixfmt.h:100
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
Definition: framesync.h:91
Input stream structure.
Definition: framesync.h:81
#define av_log(a,...)
A filter pad used for either input or output.
Definition: internal.h:54
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
AVFilterPad * input_pads
array of input pads
Definition: avfilter.h:345
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
static const AVFilterPad displace_inputs[]
Definition: vf_displace.c:377
#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:569
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
#define FLAGS
Definition: vf_displace.c:53
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:293
Frame sync structure.
Definition: framesync.h:146
#define AV_PIX_FMT_FLAG_RGB
The pixel format contains RGB-like data (as opposed to YUV/grayscale).
Definition: pixdesc.h:148
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
static void displace_planar(DisplaceContext *s, const AVFrame *in, const AVFrame *xpic, const AVFrame *ypic, AVFrame *out)
Definition: vf_displace.c:84
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
Definition: pixfmt.h:95
void * priv
private data for use by the filter
Definition: avfilter.h:353
int av_get_padded_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
Return the number of bits per pixel for the pixel format described by pixdesc, including any padding ...
Definition: pixdesc.c:2487
AVRational time_base
Time base for the incoming frames.
Definition: framesync.h:96
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter&#39;s input and try to produce output.
Definition: framesync.c:344
int(* on_event)(struct FFFrameSync *fs)
Callback called when a frame event is ready.
Definition: framesync.h:172
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
Definition: pixfmt.h:92
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:93
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
static void displace_packed(DisplaceContext *s, const AVFrame *in, const AVFrame *xpic, const AVFrame *ypic, AVFrame *out)
Definition: vf_displace.c:160
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
static int process_frame(FFFrameSync *fs)
Definition: vf_displace.c:243
#define Y
Definition: boxblur.h:38
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
uint8_t w
Definition: llviddspenc.c:38
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
AVFormatContext * ctx
Definition: movenc.c:48
AVRational time_base
Time base for the output events.
Definition: framesync.h:162
#define s(width, name)
Definition: cbs_vp9.c:257
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
void * opaque
Opaque pointer, not used by the API.
Definition: framesync.h:177
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:540
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
#define OFFSET(x)
Definition: vf_displace.c:52
static const AVFilterPad displace_outputs[]
Definition: vf_displace.c:394
Extend the frame to infinity.
Definition: framesync.h:75
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
Definition: framesync.c:77
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:177
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31))))#define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac){}void ff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map){AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;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);return NULL;}return ac;}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;}else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->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);return ac;}int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){int use_generic=1;int len=in->nb_samples;int p;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
unsigned sync
Synchronization level: frames on input at the highest sync level will generate output frame events...
Definition: framesync.h:139
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
Ignore this stream and continue processing the other ones.
Definition: framesync.h:70
static int query_formats(AVFilterContext *ctx)
Definition: vf_displace.c:66
packed BGR 8:8:8, 32bpp, BGRXBGRX... X=unused/undefined
Definition: pixfmt.h:240
const char * name
Filter name.
Definition: avfilter.h:148
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition: avfilter.h:133
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
enum EdgeMode edge
Definition: vf_displace.c:41
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
#define flags(name, subs,...)
Definition: cbs_av1.c:561
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:309
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
FFFrameSync fs
Definition: vf_displace.c:46
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_displace.c:370
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
uint8_t blank[4]
Definition: vf_displace.c:45
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
static int config_input(AVFilterLink *inlink)
Definition: vf_displace.c:273
Completely stop all streams with this one.
Definition: framesync.h:65
void(* displace)(struct DisplaceContext *s, const AVFrame *in, const AVFrame *xpic, const AVFrame *ypic, AVFrame *out)
Definition: vf_displace.c:48
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:258
An instance of a filter.
Definition: avfilter.h:338
FILE * out
Definition: movenc.c:54
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
EdgeMode
Definition: vf_displace.c:30
internal API functions
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get)
Get the current frame in an input.
Definition: framesync.c:256
packed RGB 8:8:8, 32bpp, XRGBXRGB... X=unused/undefined
Definition: pixfmt.h:237
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
static void hsub(htype *dst, const htype *src, int bins)
Definition: vf_median.c:74
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:654
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58