FFmpeg
vf_mergeplanes.c
Go to the documentation of this file.
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/avassert.h"
22 #include "libavutil/avstring.h"
23 #include "libavutil/imgutils.h"
24 #include "libavutil/opt.h"
25 #include "libavutil/pixdesc.h"
26 #include "avfilter.h"
27 #include "internal.h"
28 #include "framesync.h"
29 
30 typedef struct Mapping {
31  int input;
32  int plane;
33 } Mapping;
34 
35 typedef struct InputParam {
36  int depth[4];
37  int nb_planes;
38  int planewidth[4];
39  int planeheight[4];
40 } InputParam;
41 
42 typedef struct MergePlanesContext {
43  const AVClass *class;
44  int64_t mapping;
45  const enum AVPixelFormat out_fmt;
46  int nb_inputs;
47  int nb_planes;
48  int planewidth[4];
49  int planeheight[4];
52 
55 
56 #define OFFSET(x) offsetof(MergePlanesContext, x)
57 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
58 static const AVOption mergeplanes_options[] = {
59  { "mapping", "set input to output plane mapping", OFFSET(mapping), AV_OPT_TYPE_INT, {.i64=-1}, -1, 0x33333333, FLAGS|AV_OPT_FLAG_DEPRECATED },
60  { "format", "set output pixel format", OFFSET(out_fmt), AV_OPT_TYPE_PIXEL_FMT, {.i64=AV_PIX_FMT_YUVA444P}, 0, INT_MAX, .flags=FLAGS },
61  { "map0s", "set 1st input to output stream mapping", OFFSET(map[0].input), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS },
62  { "map0p", "set 1st input to output plane mapping", OFFSET(map[0].plane), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS },
63  { "map1s", "set 2nd input to output stream mapping", OFFSET(map[1].input), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS },
64  { "map1p", "set 2nd input to output plane mapping", OFFSET(map[1].plane), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS },
65  { "map2s", "set 3rd input to output stream mapping", OFFSET(map[2].input), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS },
66  { "map2p", "set 3rd input to output plane mapping", OFFSET(map[2].plane), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS },
67  { "map3s", "set 4th input to output stream mapping", OFFSET(map[3].input), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS },
68  { "map3p", "set 4th input to output plane mapping", OFFSET(map[3].plane), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS },
69  { NULL }
70 };
71 
72 AVFILTER_DEFINE_CLASS(mergeplanes);
73 
75 {
76  MergePlanesContext *s = ctx->priv;
77  int64_t m = s->mapping;
78  int i, ret;
79 
80  s->outdesc = av_pix_fmt_desc_get(s->out_fmt);
81  if (!(s->outdesc->flags & AV_PIX_FMT_FLAG_PLANAR) ||
82  s->outdesc->nb_components < 2) {
83  av_log(ctx, AV_LOG_ERROR, "Only planar formats with more than one component are supported.\n");
84  return AVERROR(EINVAL);
85  }
86  s->nb_planes = av_pix_fmt_count_planes(s->out_fmt);
87 
88  for (i = s->nb_planes - 1; i >= 0; i--) {
89  if (m >= 0 && m <= 0x33333333) {
90  s->map[i].plane = m & 0xf;
91  m >>= 4;
92  s->map[i].input = m & 0xf;
93  m >>= 4;
94  }
95 
96  if (s->map[i].plane > 3 || s->map[i].input > 3) {
97  av_log(ctx, AV_LOG_ERROR, "Mapping with out of range input and/or plane number.\n");
98  return AVERROR(EINVAL);
99  }
100 
101  s->nb_inputs = FFMAX(s->nb_inputs, s->map[i].input + 1);
102  }
103 
104  av_assert0(s->nb_inputs && s->nb_inputs <= 4);
105 
106  for (i = 0; i < s->nb_inputs; i++) {
107  AVFilterPad pad = { 0 };
108 
109  pad.type = AVMEDIA_TYPE_VIDEO;
110  pad.name = av_asprintf("in%d", i);
111  if (!pad.name)
112  return AVERROR(ENOMEM);
113 
114  if ((ret = ff_append_inpad_free_name(ctx, &pad)) < 0)
115  return ret;
116  }
117 
118  return 0;
119 }
120 
122 {
123  MergePlanesContext *s = ctx->priv;
125  int i, ret;
126 
127  s->outdesc = av_pix_fmt_desc_get(s->out_fmt);
128  for (i = 0; av_pix_fmt_desc_get(i); i++) {
130  if (desc->comp[0].depth == s->outdesc->comp[0].depth &&
131  (desc->comp[0].depth <= 8 || (desc->flags & AV_PIX_FMT_FLAG_BE) == (s->outdesc->flags & AV_PIX_FMT_FLAG_BE)) &&
132  av_pix_fmt_count_planes(i) == desc->nb_components &&
133  (ret = ff_add_format(&formats, i)) < 0)
134  return ret;
135  }
136 
137  for (i = 0; i < s->nb_inputs; i++)
138  if ((ret = ff_formats_ref(formats, &ctx->inputs[i]->outcfg.formats)) < 0)
139  return ret;
140 
141  formats = NULL;
142  if ((ret = ff_add_format(&formats, s->out_fmt)) < 0 ||
143  (ret = ff_formats_ref(formats, &ctx->outputs[0]->incfg.formats)) < 0)
144  return ret;
145 
146  return 0;
147 }
148 
150 {
151  AVFilterContext *ctx = fs->parent;
152  AVFilterLink *outlink = ctx->outputs[0];
153  MergePlanesContext *s = fs->opaque;
154  AVFrame *in[4] = { NULL };
155  AVFrame *out;
156  int i, ret;
157 
158  for (i = 0; i < s->nb_inputs; i++) {
159  if ((ret = ff_framesync_get_frame(&s->fs, i, &in[i], 0)) < 0)
160  return ret;
161  }
162 
163  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
164  if (!out)
165  return AVERROR(ENOMEM);
166  out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
167 
168  for (i = 0; i < s->nb_planes; i++) {
169  const int input = s->map[i].input;
170  const int plane = s->map[i].plane;
171 
172  av_image_copy_plane(out->data[i], out->linesize[i],
173  in[input]->data[plane], in[input]->linesize[plane],
174  s->planewidth[i], s->planeheight[i]);
175  }
176 
177  return ff_filter_frame(outlink, out);
178 }
179 
180 static int config_output(AVFilterLink *outlink)
181 {
182  AVFilterContext *ctx = outlink->src;
183  MergePlanesContext *s = ctx->priv;
184  InputParam inputsp[4];
185  FFFrameSyncIn *in;
186  int i, ret;
187 
188  if ((ret = ff_framesync_init(&s->fs, ctx, s->nb_inputs)) < 0)
189  return ret;
190 
191  in = s->fs.in;
192  s->fs.opaque = s;
193  s->fs.on_event = process_frame;
194 
195  outlink->w = ctx->inputs[0]->w;
196  outlink->h = ctx->inputs[0]->h;
197  outlink->time_base = ctx->inputs[0]->time_base;
198  outlink->frame_rate = ctx->inputs[0]->frame_rate;
199  outlink->sample_aspect_ratio = ctx->inputs[0]->sample_aspect_ratio;
200 
201  s->planewidth[1] =
202  s->planewidth[2] = AV_CEIL_RSHIFT(((s->outdesc->comp[1].depth > 8) + 1) * outlink->w, s->outdesc->log2_chroma_w);
203  s->planewidth[0] =
204  s->planewidth[3] = ((s->outdesc->comp[0].depth > 8) + 1) * outlink->w;
205  s->planeheight[1] =
206  s->planeheight[2] = AV_CEIL_RSHIFT(outlink->h, s->outdesc->log2_chroma_h);
207  s->planeheight[0] =
208  s->planeheight[3] = outlink->h;
209 
210  for (i = 0; i < s->nb_inputs; i++) {
211  InputParam *inputp = &inputsp[i];
212  AVFilterLink *inlink = ctx->inputs[i];
213  const AVPixFmtDescriptor *indesc = av_pix_fmt_desc_get(inlink->format);
214  int j;
215 
216  if (outlink->sample_aspect_ratio.num != inlink->sample_aspect_ratio.num ||
217  outlink->sample_aspect_ratio.den != inlink->sample_aspect_ratio.den) {
218  av_log(ctx, AV_LOG_ERROR, "input #%d link %s SAR %d:%d "
219  "does not match output link %s SAR %d:%d\n",
220  i, ctx->input_pads[i].name,
221  inlink->sample_aspect_ratio.num,
222  inlink->sample_aspect_ratio.den,
223  ctx->output_pads[0].name,
224  outlink->sample_aspect_ratio.num,
225  outlink->sample_aspect_ratio.den);
226  return AVERROR(EINVAL);
227  }
228 
229  inputp->planewidth[1] =
230  inputp->planewidth[2] = AV_CEIL_RSHIFT(((indesc->comp[1].depth > 8) + 1) * inlink->w, indesc->log2_chroma_w);
231  inputp->planewidth[0] =
232  inputp->planewidth[3] = ((indesc->comp[0].depth > 8) + 1) * inlink->w;
233  inputp->planeheight[1] =
234  inputp->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, indesc->log2_chroma_h);
235  inputp->planeheight[0] =
236  inputp->planeheight[3] = inlink->h;
237  inputp->nb_planes = av_pix_fmt_count_planes(inlink->format);
238 
239  for (j = 0; j < inputp->nb_planes; j++)
240  inputp->depth[j] = indesc->comp[j].depth;
241 
242  in[i].time_base = inlink->time_base;
243  in[i].sync = 1;
244  in[i].before = EXT_STOP;
245  in[i].after = EXT_STOP;
246  }
247 
248  for (i = 0; i < s->nb_planes; i++) {
249  const int input = s->map[i].input;
250  const int plane = s->map[i].plane;
251  InputParam *inputp = &inputsp[input];
252 
253  if (plane + 1 > inputp->nb_planes) {
254  av_log(ctx, AV_LOG_ERROR, "input %d does not have %d plane\n",
255  input, plane);
256  goto fail;
257  }
258  if (s->outdesc->comp[i].depth != inputp->depth[plane]) {
259  av_log(ctx, AV_LOG_ERROR, "output plane %d depth %d does not "
260  "match input %d plane %d depth %d\n",
261  i, s->outdesc->comp[i].depth,
262  input, plane, inputp->depth[plane]);
263  goto fail;
264  }
265  if (s->planewidth[i] != inputp->planewidth[plane]) {
266  av_log(ctx, AV_LOG_ERROR, "output plane %d width %d does not "
267  "match input %d plane %d width %d\n",
268  i, s->planewidth[i],
269  input, plane, inputp->planewidth[plane]);
270  goto fail;
271  }
272  if (s->planeheight[i] != inputp->planeheight[plane]) {
273  av_log(ctx, AV_LOG_ERROR, "output plane %d height %d does not "
274  "match input %d plane %d height %d\n",
275  i, s->planeheight[i],
276  input, plane, inputp->planeheight[plane]);
277  goto fail;
278  }
279  }
280 
281  return ff_framesync_configure(&s->fs);
282 fail:
283  return AVERROR(EINVAL);
284 }
285 
287 {
288  MergePlanesContext *s = ctx->priv;
289  return ff_framesync_activate(&s->fs);
290 }
291 
293 {
294  MergePlanesContext *s = ctx->priv;
295 
296  ff_framesync_uninit(&s->fs);
297 }
298 
300  {
301  .name = "default",
302  .type = AVMEDIA_TYPE_VIDEO,
303  .config_props = config_output,
304  },
305 };
306 
308  .name = "mergeplanes",
309  .description = NULL_IF_CONFIG_SMALL("Merge planes."),
310  .priv_size = sizeof(MergePlanesContext),
311  .priv_class = &mergeplanes_class,
312  .init = init,
313  .uninit = uninit,
314  .activate = activate,
315  .inputs = NULL,
319 };
formats
formats
Definition: signature.h:48
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:101
InputParam
Definition: vf_mergeplanes.c:35
FFFrameSyncIn::time_base
AVRational time_base
Time base for the incoming frames.
Definition: framesync.h:117
ff_framesync_configure
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:134
mergeplanes_options
static const AVOption mergeplanes_options[]
Definition: vf_mergeplanes.c:58
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
AVERROR
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
opt.h
ff_framesync_uninit
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:304
out
FILE * out
Definition: movenc.c:54
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:999
MergePlanesContext::planeheight
int planeheight[4]
Definition: vf_mergeplanes.c:49
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2703
ff_framesync_get_frame
int ff_framesync_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe, unsigned get)
Get the current frame in an input.
Definition: framesync.c:267
MergePlanesContext::nb_inputs
int nb_inputs
Definition: vf_mergeplanes.c:46
inlink
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
Definition: filter_design.txt:212
av_asprintf
char * av_asprintf(const char *fmt,...)
Definition: avstring.c:116
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
pixdesc.h
AVComponentDescriptor::depth
int depth
Number of bits in the component.
Definition: pixdesc.h:57
AVOption
AVOption.
Definition: opt.h:251
FILTER_QUERY_FUNC
#define FILTER_QUERY_FUNC(func)
Definition: internal.h:167
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:175
FFFrameSync
Frame sync structure.
Definition: framesync.h:168
MergePlanesContext::planewidth
int planewidth[4]
Definition: vf_mergeplanes.c:48
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:346
av_image_copy_plane
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:374
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition: formats.h:64
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2743
EXT_STOP
@ EXT_STOP
Completely stop all streams with this one.
Definition: framesync.h:65
MergePlanesContext
Definition: vf_mergeplanes.c:42
fail
#define fail()
Definition: checkasm.h:131
FFFrameSyncIn
Input stream structure.
Definition: framesync.h:102
InputParam::planeheight
int planeheight[4]
Definition: vf_mergeplanes.c:39
InputParam::nb_planes
int nb_planes
Definition: vf_mergeplanes.c:37
FFFrameSyncIn::sync
unsigned sync
Synchronization level: frames on input at the highest sync level will generate output frame events.
Definition: framesync.h:160
AVFILTER_FLAG_DYNAMIC_INPUTS
#define AVFILTER_FLAG_DYNAMIC_INPUTS
The number of the filter inputs is not determined just by AVFilter.inputs.
Definition: avfilter.h:116
AVRational::num
int num
Numerator.
Definition: rational.h:59
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_mergeplanes.c:121
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:49
MergePlanesContext::fs
FFFrameSync fs
Definition: vf_mergeplanes.c:53
avassert.h
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
av_cold
#define av_cold
Definition: attributes.h:90
s
#define s(width, name)
Definition: cbs_vp9.c:256
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:50
ff_formats_ref
int ff_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
Add *ref as a new reference to formats.
Definition: formats.c:596
Mapping
Definition: vf_mergeplanes.c:30
OFFSET
#define OFFSET(x)
Definition: vf_mergeplanes.c:56
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
ctx
AVFormatContext * ctx
Definition: movenc.c:48
av_rescale_q
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
AVPixFmtDescriptor::log2_chroma_w
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:80
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_mergeplanes.c:180
InputParam::planewidth
int planewidth[4]
Definition: vf_mergeplanes.c:38
MergePlanesContext::mapping
int64_t mapping
Definition: vf_mergeplanes.c:44
mergeplanes_outputs
static const AVFilterPad mergeplanes_outputs[]
Definition: vf_mergeplanes.c:299
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
activate
static int activate(AVFilterContext *ctx)
Definition: vf_mergeplanes.c:286
NULL
#define NULL
Definition: coverity.c:32
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:258
ff_append_inpad_free_name
int ff_append_inpad_free_name(AVFilterContext *f, AVFilterPad *p)
Definition: avfilter.c:123
MergePlanesContext::map
Mapping map[4]
Definition: vf_mergeplanes.c:50
ff_add_format
int ff_add_format(AVFilterFormats **avff, int64_t fmt)
Add fmt to the list of media formats contained in *avff.
Definition: formats.c:449
MergePlanesContext::out_fmt
enum AVPixelFormat out_fmt
Definition: vf_mergeplanes.c:45
inputs
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
Definition: filter_design.txt:243
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
InputParam::depth
int depth[4]
Definition: vf_mergeplanes.c:36
FLAGS
#define FLAGS
Definition: vf_mergeplanes.c:57
ff_vf_mergeplanes
const AVFilter ff_vf_mergeplanes
Definition: vf_mergeplanes.c:307
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:167
MergePlanesContext::outdesc
const AVPixFmtDescriptor * outdesc
Definition: vf_mergeplanes.c:51
input
and forward the test the status of outputs and forward it to the corresponding return FFERROR_NOT_READY If the filters stores internally one or a few frame for some input
Definition: filter_design.txt:172
Mapping::plane
int plane
Definition: vf_mergeplanes.c:32
internal.h
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_mergeplanes.c:74
AV_PIX_FMT_FLAG_BE
#define AV_PIX_FMT_FLAG_BE
Pixel format is big-endian.
Definition: pixdesc.h:116
Mapping::input
int input
Definition: vf_mergeplanes.c:31
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:55
AVFilter
Filter definition.
Definition: avfilter.h:171
ret
ret
Definition: filter_design.txt:187
AVFilterPad::type
enum AVMediaType type
AVFilterPad type.
Definition: internal.h:60
ff_framesync_init
int ff_framesync_init(FFFrameSync *fs, AVFilterContext *parent, unsigned nb_in)
Initialize a frame sync structure.
Definition: framesync.c:86
FFFrameSyncIn::before
enum FFFrameSyncExtMode before
Extrapolation mode for timestamps before the first frame.
Definition: framesync.h:107
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(mergeplanes)
framesync.h
AVRational::den
int den
Denominator.
Definition: rational.h:60
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
avfilter.h
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:105
AV_PIX_FMT_FLAG_PLANAR
#define AV_PIX_FMT_FLAG_PLANAR
At least one pixel component is not in the first data plane.
Definition: pixdesc.h:132
AV_OPT_TYPE_PIXEL_FMT
@ AV_OPT_TYPE_PIXEL_FMT
Definition: opt.h:236
AVFilterContext
An instance of a filter.
Definition: avfilter.h:408
desc
const char * desc
Definition: libsvtav1.c:83
process_frame
static int process_frame(FFFrameSync *fs)
Definition: vf_mergeplanes.c:149
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
map
const VDPAUPixFmtMap * map
Definition: hwcontext_vdpau.c:71
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:191
imgutils.h
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:370
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
FFFrameSyncIn::after
enum FFFrameSyncExtMode after
Extrapolation mode for timestamps after the last frame.
Definition: framesync.h:112
ff_framesync_activate
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter's input and try to produce output.
Definition: framesync.c:355
avstring.h
AVPixFmtDescriptor::log2_chroma_h
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:89
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_mergeplanes.c:292
AV_OPT_FLAG_DEPRECATED
#define AV_OPT_FLAG_DEPRECATED
set if option is deprecated, users should refer to AVOption.help text for more information
Definition: opt.h:298
MergePlanesContext::nb_planes
int nb_planes
Definition: vf_mergeplanes.c:47