FFmpeg
vf_maskedmerge.c
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1 /*
2  * Copyright (c) 2015 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 "internal.h"
27 #include "video.h"
28 #include "maskedmerge.h"
29 
30 #define OFFSET(x) offsetof(MaskedMergeContext, x)
31 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
32 
33 static const AVOption maskedmerge_options[] = {
34  { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
35  { NULL }
36 };
37 
38 AVFILTER_DEFINE_CLASS(maskedmerge);
39 
41 {
42  static const enum AVPixelFormat pix_fmts[] = {
62  };
63 
64  return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
65 }
66 
67 typedef struct ThreadData {
69  AVFrame *out;
70 } ThreadData;
71 
72 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
73 {
74  MaskedMergeContext *s = ctx->priv;
75  ThreadData *td = arg;
76  AVFrame *base = td->base;
77  AVFrame *overlay = td->overlay;
78  AVFrame *mask = td->mask;
79  AVFrame *out = td->out;
80  int p;
81 
82  for (p = 0; p < s->nb_planes; p++) {
83  const int h = s->height[p];
84  const int slice_start = (h * jobnr) / nb_jobs;
85  const int slice_end = (h * (jobnr+1)) / nb_jobs;
86 
87  if (!((1 << p) & s->planes)) {
88  av_image_copy_plane(out->data[p] + slice_start * out->linesize[p],
89  out->linesize[p],
90  base->data[p] + slice_start * base->linesize[p],
91  base->linesize[p],
92  s->linesize[p], slice_end - slice_start);
93  continue;
94  }
95 
96  s->maskedmerge(base->data[p] + slice_start * base->linesize[p],
97  overlay->data[p] + slice_start * overlay->linesize[p],
98  mask->data[p] + slice_start * mask->linesize[p],
99  out->data[p] + slice_start * out->linesize[p],
100  base->linesize[p], overlay->linesize[p],
101  mask->linesize[p], out->linesize[p],
102  s->width[p], slice_end - slice_start,
103  s->half, s->depth);
104  }
105 
106  return 0;
107 }
108 
110 {
111  AVFilterContext *ctx = fs->parent;
112  MaskedMergeContext *s = fs->opaque;
113  AVFilterLink *outlink = ctx->outputs[0];
114  AVFrame *out, *base, *overlay, *mask;
115  ThreadData td;
116  int ret;
117 
118  if ((ret = ff_framesync_get_frame(&s->fs, 0, &base, 0)) < 0 ||
119  (ret = ff_framesync_get_frame(&s->fs, 1, &overlay, 0)) < 0 ||
120  (ret = ff_framesync_get_frame(&s->fs, 2, &mask, 0)) < 0)
121  return ret;
122 
123  if (ctx->is_disabled) {
124  out = av_frame_clone(base);
125  if (!out)
126  return AVERROR(ENOMEM);
127  } else {
128  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
129  if (!out)
130  return AVERROR(ENOMEM);
131  av_frame_copy_props(out, base);
132 
133  td.out = out;
134  td.base = base;
135  td.overlay = overlay;
136  td.mask = mask;
137  ctx->internal->execute(ctx, filter_slice, &td, NULL,
138  FFMIN(s->height[2], ff_filter_get_nb_threads(ctx)));
139  }
140  out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
141 
142  return ff_filter_frame(outlink, out);
143 }
144 
145 static void maskedmerge8(const uint8_t *bsrc, const uint8_t *osrc,
146  const uint8_t *msrc, uint8_t *dst,
147  ptrdiff_t blinesize, ptrdiff_t olinesize,
148  ptrdiff_t mlinesize, ptrdiff_t dlinesize,
149  int w, int h,
150  int half, int shift)
151 {
152  int x, y;
153 
154  for (y = 0; y < h; y++) {
155  for (x = 0; x < w; x++) {
156  dst[x] = bsrc[x] + ((msrc[x] * (osrc[x] - bsrc[x]) + 128) >> 8);
157  }
158 
159  dst += dlinesize;
160  bsrc += blinesize;
161  osrc += olinesize;
162  msrc += mlinesize;
163  }
164 }
165 
166 static void maskedmerge16(const uint8_t *bbsrc, const uint8_t *oosrc,
167  const uint8_t *mmsrc, uint8_t *ddst,
168  ptrdiff_t blinesize, ptrdiff_t olinesize,
169  ptrdiff_t mlinesize, ptrdiff_t dlinesize,
170  int w, int h,
171  int half, int shift)
172 {
173  const uint16_t *bsrc = (const uint16_t *)bbsrc;
174  const uint16_t *osrc = (const uint16_t *)oosrc;
175  const uint16_t *msrc = (const uint16_t *)mmsrc;
176  uint16_t *dst = (uint16_t *)ddst;
177  int x, y;
178 
179  for (y = 0; y < h; y++) {
180  for (x = 0; x < w; x++) {
181  dst[x] = bsrc[x] + ((msrc[x] * (osrc[x] - bsrc[x]) + half) >> shift);
182  }
183 
184  dst += dlinesize / 2;
185  bsrc += blinesize / 2;
186  osrc += olinesize / 2;
187  msrc += mlinesize / 2;
188  }
189 }
190 
192 {
193  AVFilterContext *ctx = inlink->dst;
194  MaskedMergeContext *s = ctx->priv;
196  int vsub, hsub;
197 
199 
200  hsub = desc->log2_chroma_w;
201  vsub = desc->log2_chroma_h;
202  s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
203  s->height[0] = s->height[3] = inlink->h;
204  s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
205  s->width[0] = s->width[3] = inlink->w;
206 
207  s->depth = desc->comp[0].depth;
208  s->half = (1 << s->depth) / 2;
209 
210  if (desc->comp[0].depth == 8)
212  else
214 
215  if (ARCH_X86)
217 
218  return 0;
219 }
220 
221 static int config_output(AVFilterLink *outlink)
222 {
223  AVFilterContext *ctx = outlink->src;
224  MaskedMergeContext *s = ctx->priv;
225  AVFilterLink *base = ctx->inputs[0];
226  AVFilterLink *overlay = ctx->inputs[1];
227  AVFilterLink *mask = ctx->inputs[2];
228  FFFrameSyncIn *in;
229  int ret;
230 
231  if (base->format != overlay->format ||
232  base->format != mask->format) {
233  av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
234  return AVERROR(EINVAL);
235  }
236  if (base->w != overlay->w || base->h != overlay->h ||
237  base->w != mask->w || base->h != mask->h) {
238  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
239  "(size %dx%d) do not match the corresponding "
240  "second input link %s parameters (size %dx%d) "
241  "and/or third input link %s parameters (size %dx%d)\n",
242  ctx->input_pads[0].name, base->w, base->h,
243  ctx->input_pads[1].name, overlay->w, overlay->h,
244  ctx->input_pads[2].name, mask->w, mask->h);
245  return AVERROR(EINVAL);
246  }
247 
248  outlink->w = base->w;
249  outlink->h = base->h;
250  outlink->sample_aspect_ratio = base->sample_aspect_ratio;
251  outlink->frame_rate = base->frame_rate;
252 
253  if ((ret = av_image_fill_linesizes(s->linesize, outlink->format, outlink->w)) < 0)
254  return ret;
255 
256  if ((ret = ff_framesync_init(&s->fs, ctx, 3)) < 0)
257  return ret;
258 
259  in = s->fs.in;
260  in[0].time_base = base->time_base;
261  in[1].time_base = overlay->time_base;
262  in[2].time_base = mask->time_base;
263  in[0].sync = 1;
264  in[0].before = EXT_STOP;
265  in[0].after = EXT_INFINITY;
266  in[1].sync = 1;
267  in[1].before = EXT_STOP;
268  in[1].after = EXT_INFINITY;
269  in[2].sync = 1;
270  in[2].before = EXT_STOP;
271  in[2].after = EXT_INFINITY;
272  s->fs.opaque = s;
274 
275  ret = ff_framesync_configure(&s->fs);
276  outlink->time_base = s->fs.time_base;
277 
278  return ret;
279 }
280 
282 {
283  MaskedMergeContext *s = ctx->priv;
284  return ff_framesync_activate(&s->fs);
285 }
286 
288 {
289  MaskedMergeContext *s = ctx->priv;
290 
291  ff_framesync_uninit(&s->fs);
292 }
293 
294 static const AVFilterPad maskedmerge_inputs[] = {
295  {
296  .name = "base",
297  .type = AVMEDIA_TYPE_VIDEO,
298  .config_props = config_input,
299  },
300  {
301  .name = "overlay",
302  .type = AVMEDIA_TYPE_VIDEO,
303  },
304  {
305  .name = "mask",
306  .type = AVMEDIA_TYPE_VIDEO,
307  },
308  { NULL }
309 };
310 
312  {
313  .name = "default",
314  .type = AVMEDIA_TYPE_VIDEO,
315  .config_props = config_output,
316  },
317  { NULL }
318 };
319 
321  .name = "maskedmerge",
322  .description = NULL_IF_CONFIG_SMALL("Merge first stream with second stream using third stream as mask."),
323  .priv_size = sizeof(MaskedMergeContext),
324  .uninit = uninit,
326  .activate = activate,
327  .inputs = maskedmerge_inputs,
328  .outputs = maskedmerge_outputs,
329  .priv_class = &maskedmerge_class,
331 };
#define NULL
Definition: coverity.c:32
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:442
AVFrame * out
Definition: af_adeclick.c:494
static int shift(int a, int b)
Definition: sonic.c:82
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:434
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
This structure describes decoded (raw) audio or video data.
Definition: frame.h:308
AVOption.
Definition: opt.h:248
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:436
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:409
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:419
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:437
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:2613
Main libavfilter public API header.
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
void ff_maskedmerge_init_x86(MaskedMergeContext *s)
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:415
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:379
static void maskedmerge16(const uint8_t *bbsrc, const uint8_t *oosrc, const uint8_t *mmsrc, uint8_t *ddst, ptrdiff_t blinesize, ptrdiff_t olinesize, ptrdiff_t mlinesize, ptrdiff_t dlinesize, int w, int h, int half, int shift)
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:403
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:124
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
int is_disabled
the enabled state from the last expression evaluation
Definition: avfilter.h:388
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:287
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:380
RGB2YUV_SHIFT RGB2YUV_SHIFT RGB2YUV_SHIFT RGB2YUV_SHIFT RGB2YUV_SHIFT RGB2YUV_SHIFT RGB2YUV_SHIFT RGB2YUV_SHIFT uint8_t const uint8_t const uint8_t * bsrc
Definition: input.c:398
const char * name
Pad name.
Definition: internal.h:60
AVFilterContext * parent
Parent filter context.
Definition: framesync.h:152
static void maskedmerge8(const uint8_t *bsrc, const uint8_t *osrc, const uint8_t *msrc, uint8_t *dst, ptrdiff_t blinesize, ptrdiff_t olinesize, ptrdiff_t mlinesize, ptrdiff_t dlinesize, int w, int h, int half, int shift)
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:381
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:349
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1091
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
static const AVFilterPad maskedmerge_outputs[]
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
#define av_cold
Definition: attributes.h:88
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:259
AVOptions.
AVFILTER_DEFINE_CLASS(maskedmerge)
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:401
FFFrameSyncIn * in
Pointer to array of inputs.
Definition: framesync.h:203
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:433
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:414
AVFrame * dst
Definition: vf_blend.c:56
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
Definition: pixfmt.h:100
static int query_formats(AVFilterContext *ctx)
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:412
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
Definition: framesync.h:91
Input stream structure.
Definition: framesync.h:81
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:404
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:441
#define FLAGS
#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:348
static const struct @323 planes[]
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
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:588
#define td
Definition: regdef.h:70
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:290
Frame sync structure.
Definition: framesync.h:146
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:153
void * priv
private data for use by the filter
Definition: avfilter.h:356
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:443
const char * arg
Definition: jacosubdec.c:66
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:420
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:341
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:402
int(* on_event)(struct FFFrameSync *fs)
Callback called when a frame event is ready.
Definition: framesync.h:172
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:421
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:397
void(* maskedmerge)(const uint8_t *bsrc, const uint8_t *osrc, const uint8_t *msrc, uint8_t *dst, ptrdiff_t blinesize, ptrdiff_t olinesize, ptrdiff_t mlinesize, ptrdiff_t dlinesize, int w, int h, int half, int shift)
Definition: maskedmerge.h:36
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:418
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:800
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:383
#define FFMIN(a, b)
Definition: common.h:96
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:440
#define OFFSET(x)
AVFormatContext * ctx
Definition: movenc.c:48
AVRational time_base
Time base for the output events.
Definition: framesync.h:162
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:438
void * opaque
Opaque pointer, not used by the API.
Definition: framesync.h:177
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:398
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:417
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:553
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
static int process_frame(FFFrameSync *fs)
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:410
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:407
static int config_input(AVFilterLink *inlink)
Extend the frame to infinity.
Definition: framesync.h:75
static const AVFilterPad maskedmerge_inputs[]
Used for passing data between threads.
Definition: dsddec.c:67
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:339
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
Definition: framesync.c:84
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
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:382
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
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:399
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
Filter definition.
Definition: avfilter.h:145
AVFrame * mask
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
Definition: imgutils.c:89
static int activate(AVFilterContext *ctx)
static const AVOption maskedmerge_options[]
const char * name
Filter name.
Definition: avfilter.h:149
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:405
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:396
#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:134
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:353
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:300
AVFrame * overlay
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:408
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:416
#define flags(name, subs,...)
Definition: cbs_av1.c:560
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:381
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:400
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:406
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:322
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int config_output(AVFilterLink *outlink)
AVFrame * base
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
static av_cold void uninit(AVFilterContext *ctx)
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:435
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
avfilter_execute_func * execute
Definition: internal.h:136
FFFrameSync fs
Definition: maskedmerge.h:34
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2035
Completely stop all streams with this one.
Definition: framesync.h:65
const AVPixFmtDescriptor * desc
Definition: vf_tonemap.c:196
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:258
static uint8_t half(int a, int b)
Definition: mobiclip.c:592
An instance of a filter.
Definition: avfilter.h:341
const void ** s
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
AVFrame * in
Definition: af_afftdn.c:1083
void av_image_copy_plane(uint8_t *dst, int dst_linesize, const uint8_t *src, int src_linesize, int bytewidth, int height)
Copy image plane from src to dst.
Definition: imgutils.c:373
AVFilterLink * inlink
Definition: vf_blend.c:57
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:253
int depth
Number of bits in the component.
Definition: pixdesc.h:58
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:411
AVFilter ff_vf_maskedmerge
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:671
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:439
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58