FFmpeg
vf_vidstabtransform.c
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1 /*
2  * Copyright (c) 2013 Georg Martius <georg dot martius at web dot de>
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 #define DEFAULT_INPUT_NAME "transforms.trf"
22 
23 #include <vid.stab/libvidstab.h>
24 
25 #include "libavutil/common.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/imgutils.h"
28 #include "avfilter.h"
29 #include "internal.h"
30 
31 #include "vidstabutils.h"
32 
33 typedef struct TransformContext {
34  const AVClass *class;
35 
36  VSTransformData td;
37  VSTransformConfig conf;
38 
39  VSTransformations trans; // transformations
40  char *input; // name of transform file
41  int tripod;
42  int debug;
44 
45 #define OFFSET(x) offsetof(TransformContext, x)
46 #define OFFSETC(x) (offsetof(TransformContext, conf)+offsetof(VSTransformConfig, x))
47 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
48 
50  {"input", "set path to the file storing the transforms", OFFSET(input),
51  AV_OPT_TYPE_STRING, {.str = DEFAULT_INPUT_NAME}, .flags = FLAGS },
52  {"smoothing", "set number of frames*2 + 1 used for lowpass filtering", OFFSETC(smoothing),
53  AV_OPT_TYPE_INT, {.i64 = 15}, 0, 1000, FLAGS},
54 
55  {"optalgo", "set camera path optimization algo", OFFSETC(camPathAlgo),
56  AV_OPT_TYPE_INT, {.i64 = VSOptimalL1}, VSOptimalL1, VSAvg, FLAGS, "optalgo"},
57  { "opt", "global optimization", 0, // from version 1.0 on
58  AV_OPT_TYPE_CONST, {.i64 = VSOptimalL1 }, 0, 0, FLAGS, "optalgo"},
59  { "gauss", "gaussian kernel", 0,
60  AV_OPT_TYPE_CONST, {.i64 = VSGaussian }, 0, 0, FLAGS, "optalgo"},
61  { "avg", "simple averaging on motion", 0,
62  AV_OPT_TYPE_CONST, {.i64 = VSAvg }, 0, 0, FLAGS, "optalgo"},
63 
64  {"maxshift", "set maximal number of pixels to translate image", OFFSETC(maxShift),
65  AV_OPT_TYPE_INT, {.i64 = -1}, -1, 500, FLAGS},
66  {"maxangle", "set maximal angle in rad to rotate image", OFFSETC(maxAngle),
67  AV_OPT_TYPE_DOUBLE, {.dbl = -1.0}, -1.0, 3.14, FLAGS},
68 
69  {"crop", "set cropping mode", OFFSETC(crop),
70  AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS, "crop"},
71  { "keep", "keep border", 0,
72  AV_OPT_TYPE_CONST, {.i64 = VSKeepBorder }, 0, 0, FLAGS, "crop"},
73  { "black", "black border", 0,
74  AV_OPT_TYPE_CONST, {.i64 = VSCropBorder }, 0, 0, FLAGS, "crop"},
75 
76  {"invert", "invert transforms", OFFSETC(invert),
77  AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS},
78  {"relative", "consider transforms as relative", OFFSETC(relative),
79  AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, FLAGS},
80  {"zoom", "set percentage to zoom (>0: zoom in, <0: zoom out", OFFSETC(zoom),
81  AV_OPT_TYPE_DOUBLE, {.dbl = 0}, -100, 100, FLAGS},
82  {"optzoom", "set optimal zoom (0: nothing, 1: optimal static zoom, 2: optimal dynamic zoom)", OFFSETC(optZoom),
83  AV_OPT_TYPE_INT, {.i64 = 1}, 0, 2, FLAGS},
84  {"zoomspeed", "for adative zoom: percent to zoom maximally each frame", OFFSETC(zoomSpeed),
85  AV_OPT_TYPE_DOUBLE, {.dbl = 0.25}, 0, 5, FLAGS},
86 
87  {"interpol", "set type of interpolation", OFFSETC(interpolType),
88  AV_OPT_TYPE_INT, {.i64 = 2}, 0, 3, FLAGS, "interpol"},
89  { "no", "no interpolation", 0,
90  AV_OPT_TYPE_CONST, {.i64 = VS_Zero }, 0, 0, FLAGS, "interpol"},
91  { "linear", "linear (horizontal)", 0,
92  AV_OPT_TYPE_CONST, {.i64 = VS_Linear }, 0, 0, FLAGS, "interpol"},
93  { "bilinear","bi-linear", 0,
94  AV_OPT_TYPE_CONST, {.i64 = VS_BiLinear},0, 0, FLAGS, "interpol"},
95  { "bicubic", "bi-cubic", 0,
96  AV_OPT_TYPE_CONST, {.i64 = VS_BiCubic },0, 0, FLAGS, "interpol"},
97 
98  {"tripod", "enable virtual tripod mode (same as relative=0:smoothing=0)", OFFSET(tripod),
99  AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS},
100  {"debug", "enable debug mode and writer global motions information to file", OFFSET(debug),
101  AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS},
102  {NULL}
103 };
104 
105 AVFILTER_DEFINE_CLASS(vidstabtransform);
106 
108 {
109  TransformContext *tc = ctx->priv;
110  ff_vs_init();
111  tc->class = &vidstabtransform_class;
112  av_log(ctx, AV_LOG_VERBOSE, "vidstabtransform filter: init %s\n", LIBVIDSTAB_VERSION);
113  return 0;
114 }
115 
117 {
118  TransformContext *tc = ctx->priv;
119 
120  vsTransformDataCleanup(&tc->td);
121  vsTransformationsCleanup(&tc->trans);
122 }
123 
125 {
126  // If you add something here also add it in vidstabutils.c
127  static const enum AVPixelFormat pix_fmts[] = {
133  };
134 
135  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
136  if (!fmts_list)
137  return AVERROR(ENOMEM);
138  return ff_set_common_formats(ctx, fmts_list);
139 }
140 
141 
143 {
144  AVFilterContext *ctx = inlink->dst;
145  TransformContext *tc = ctx->priv;
146  FILE *f;
147 
149  int is_planar = desc->flags & AV_PIX_FMT_FLAG_PLANAR;
150 
151  VSTransformData *td = &(tc->td);
152 
153  VSFrameInfo fi_src;
154  VSFrameInfo fi_dest;
155 
156  if (!vsFrameInfoInit(&fi_src, inlink->w, inlink->h,
157  ff_av2vs_pixfmt(ctx, inlink->format)) ||
158  !vsFrameInfoInit(&fi_dest, inlink->w, inlink->h,
159  ff_av2vs_pixfmt(ctx, inlink->format))) {
160  av_log(ctx, AV_LOG_ERROR, "unknown pixel format: %i (%s)",
161  inlink->format, desc->name);
162  return AVERROR(EINVAL);
163  }
164 
165  if ((!is_planar && fi_src.bytesPerPixel != av_get_bits_per_pixel(desc)/8) ||
166  fi_src.log2ChromaW != desc->log2_chroma_w ||
167  fi_src.log2ChromaH != desc->log2_chroma_h) {
168  av_log(ctx, AV_LOG_ERROR, "pixel-format error: bpp %i<>%i ",
169  fi_src.bytesPerPixel, av_get_bits_per_pixel(desc)/8);
170  av_log(ctx, AV_LOG_ERROR, "chroma_subsampl: w: %i<>%i h: %i<>%i\n",
171  fi_src.log2ChromaW, desc->log2_chroma_w,
172  fi_src.log2ChromaH, desc->log2_chroma_h);
173  return AVERROR(EINVAL);
174  }
175 
176  // set values that are not initializes by the options
177  tc->conf.modName = "vidstabtransform";
178  tc->conf.verbose = 1 + tc->debug;
179  if (tc->tripod) {
180  av_log(ctx, AV_LOG_INFO, "Virtual tripod mode: relative=0, smoothing=0\n");
181  tc->conf.relative = 0;
182  tc->conf.smoothing = 0;
183  }
184  tc->conf.simpleMotionCalculation = 0;
185  tc->conf.storeTransforms = tc->debug;
186  tc->conf.smoothZoom = 0;
187 
188  if (vsTransformDataInit(td, &tc->conf, &fi_src, &fi_dest) != VS_OK) {
189  av_log(ctx, AV_LOG_ERROR, "initialization of vid.stab transform failed, please report a BUG\n");
190  return AVERROR(EINVAL);
191  }
192 
193  vsTransformGetConfig(&tc->conf, td);
194  av_log(ctx, AV_LOG_INFO, "Video transformation/stabilization settings (pass 2/2):\n");
195  av_log(ctx, AV_LOG_INFO, " input = %s\n", tc->input);
196  av_log(ctx, AV_LOG_INFO, " smoothing = %d\n", tc->conf.smoothing);
197  av_log(ctx, AV_LOG_INFO, " optalgo = %s\n",
198  tc->conf.camPathAlgo == VSOptimalL1 ? "opt" :
199  (tc->conf.camPathAlgo == VSGaussian ? "gauss" : "avg"));
200  av_log(ctx, AV_LOG_INFO, " maxshift = %d\n", tc->conf.maxShift);
201  av_log(ctx, AV_LOG_INFO, " maxangle = %f\n", tc->conf.maxAngle);
202  av_log(ctx, AV_LOG_INFO, " crop = %s\n", tc->conf.crop ? "Black" : "Keep");
203  av_log(ctx, AV_LOG_INFO, " relative = %s\n", tc->conf.relative ? "True": "False");
204  av_log(ctx, AV_LOG_INFO, " invert = %s\n", tc->conf.invert ? "True" : "False");
205  av_log(ctx, AV_LOG_INFO, " zoom = %f\n", tc->conf.zoom);
206  av_log(ctx, AV_LOG_INFO, " optzoom = %s\n",
207  tc->conf.optZoom == 1 ? "Static (1)" : (tc->conf.optZoom == 2 ? "Dynamic (2)" : "Off (0)"));
208  if (tc->conf.optZoom == 2)
209  av_log(ctx, AV_LOG_INFO, " zoomspeed = %g\n", tc->conf.zoomSpeed);
210  av_log(ctx, AV_LOG_INFO, " interpol = %s\n", getInterpolationTypeName(tc->conf.interpolType));
211 
212  f = fopen(tc->input, "r");
213  if (!f) {
214  int ret = AVERROR(errno);
215  av_log(ctx, AV_LOG_ERROR, "cannot open input file %s\n", tc->input);
216  return ret;
217  } else {
218  VSManyLocalMotions mlms;
219  if (vsReadLocalMotionsFile(f, &mlms) == VS_OK) {
220  // calculate the actual transforms from the local motions
221  if (vsLocalmotions2Transforms(td, &mlms, &tc->trans) != VS_OK) {
222  av_log(ctx, AV_LOG_ERROR, "calculating transformations failed\n");
223  return AVERROR(EINVAL);
224  }
225  } else { // try to read old format
226  if (!vsReadOldTransforms(td, f, &tc->trans)) { /* read input file */
227  av_log(ctx, AV_LOG_ERROR, "error parsing input file %s\n", tc->input);
228  return AVERROR(EINVAL);
229  }
230  }
231  }
232  fclose(f);
233 
234  if (vsPreprocessTransforms(td, &tc->trans) != VS_OK) {
235  av_log(ctx, AV_LOG_ERROR, "error while preprocessing transforms\n");
236  return AVERROR(EINVAL);
237  }
238 
239  // TODO: add sharpening, so far the user needs to call the unsharp filter manually
240  return 0;
241 }
242 
243 
245 {
246  AVFilterContext *ctx = inlink->dst;
247  TransformContext *tc = ctx->priv;
248  VSTransformData* td = &(tc->td);
249 
250  AVFilterLink *outlink = inlink->dst->outputs[0];
251  int direct = 0;
252  AVFrame *out;
253  VSFrame inframe;
254  int plane;
255 
256  if (av_frame_is_writable(in)) {
257  direct = 1;
258  out = in;
259  } else {
260  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
261  if (!out) {
262  av_frame_free(&in);
263  return AVERROR(ENOMEM);
264  }
265  av_frame_copy_props(out, in);
266  }
267 
268  for (plane = 0; plane < vsTransformGetSrcFrameInfo(td)->planes; plane++) {
269  inframe.data[plane] = in->data[plane];
270  inframe.linesize[plane] = in->linesize[plane];
271  }
272  if (direct) {
273  vsTransformPrepare(td, &inframe, &inframe);
274  } else { // separate frames
275  VSFrame outframe;
276  for (plane = 0; plane < vsTransformGetDestFrameInfo(td)->planes; plane++) {
277  outframe.data[plane] = out->data[plane];
278  outframe.linesize[plane] = out->linesize[plane];
279  }
280  vsTransformPrepare(td, &inframe, &outframe);
281  }
282 
283  vsDoTransform(td, vsGetNextTransform(td, &tc->trans));
284 
285  vsTransformFinish(td);
286 
287  if (!direct)
288  av_frame_free(&in);
289 
290  return ff_filter_frame(outlink, out);
291 }
292 
294  {
295  .name = "default",
296  .type = AVMEDIA_TYPE_VIDEO,
297  .filter_frame = filter_frame,
298  .config_props = config_input,
299  },
300  { NULL }
301 };
302 
304  {
305  .name = "default",
306  .type = AVMEDIA_TYPE_VIDEO,
307  },
308  { NULL }
309 };
310 
312  .name = "vidstabtransform",
313  .description = NULL_IF_CONFIG_SMALL("Transform the frames, "
314  "pass 2 of 2 for stabilization "
315  "(see vidstabdetect for pass 1)."),
316  .priv_size = sizeof(TransformContext),
317  .init = init,
318  .uninit = uninit,
320  .inputs = avfilter_vf_vidstabtransform_inputs,
321  .outputs = avfilter_vf_vidstabtransform_outputs,
322  .priv_class = &vidstabtransform_class,
323 };
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
static const AVFilterPad avfilter_vf_vidstabtransform_outputs[]
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
Main libavfilter public API header.
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
const char * desc
Definition: nvenc.c:68
const AVClass * class
int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
Return the number of bits per pixel used by the pixel format described by pixdesc.
Definition: pixdesc.c:2474
#define tc
Definition: regdef.h:69
#define OFFSETC(x)
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
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
#define DEFAULT_INPUT_NAME
static const AVFilterPad avfilter_vf_vidstabtransform_inputs[]
#define FLAGS
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
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
#define av_cold
Definition: attributes.h:82
AVFILTER_DEFINE_CLASS(vidstabtransform)
AVOptions.
#define f(width, name)
Definition: cbs_vp9.c:255
VSTransformConfig conf
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
static int query_formats(AVFilterContext *ctx)
AVFilter ff_vf_vidstabtransform
#define av_log(a,...)
const char * name
Definition: pixdesc.h:82
A filter pad used for either input or output.
Definition: internal.h:54
#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
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
void * priv
private data for use by the filter
Definition: avfilter.h:353
static av_cold void uninit(AVFilterContext *ctx)
static int config_input(AVFilterLink *inlink)
VSTransformData td
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
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
AVFormatContext * ctx
Definition: movenc.c:48
static void invert(float *h, int n)
Definition: asrc_sinc.c:201
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:594
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
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
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
const char * name
Filter name.
Definition: avfilter.h:148
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
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
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
VSPixelFormat ff_av2vs_pixfmt(AVFilterContext *ctx, enum AVPixelFormat pf)
convert AV&#39;s pixelformat to vid.stab pixelformat
Definition: vidstabutils.c:24
common internal and external API header
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
VSTransformations trans
A list of supported formats for one end of a filter link.
Definition: formats.h:64
An instance of a filter.
Definition: avfilter.h:338
static const AVOption vidstabtransform_options[]
FILE * out
Definition: movenc.c:54
void ff_vs_init(void)
sets the memory allocation function and logging constants to av versions
Definition: vidstabutils.c:69
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
static av_cold int init(AVFilterContext *ctx)
#define OFFSET(x)
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
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
#define AV_PIX_FMT_FLAG_PLANAR
At least one pixel component is not in the first data plane.
Definition: pixdesc.h:144
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:654