FFmpeg
vf_shear.c
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1 /*
2  * Copyright (c) 2021 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/avstring.h"
22 #include "libavutil/opt.h"
23 #include "libavutil/intreadwrite.h"
24 #include "libavutil/parseutils.h"
25 #include "libavutil/pixdesc.h"
26 
27 #include "avfilter.h"
28 #include "drawutils.h"
29 #include "internal.h"
30 #include "video.h"
31 
32 #include <float.h>
33 
34 typedef struct ShearContext {
35  const AVClass *class;
36 
37  float shx, shy;
38  int interp;
39 
40  uint8_t fillcolor[4]; ///< color expressed either in YUVA or RGBA colorspace for the padding area
43  int nb_planes;
44  int depth;
47 
48  int hsub, vsub;
49  int planewidth[4];
50  int planeheight[4];
51 
52  int (*filter_slice[2])(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
53 } ShearContext;
54 
55 typedef struct ThreadData {
56  AVFrame *in, *out;
57 } ThreadData;
58 
59 #define OFFSET(x) offsetof(ShearContext, x)
60 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
61 
62 static const AVOption shear_options[] = {
63  { "shx", "set x shear factor", OFFSET(shx), AV_OPT_TYPE_FLOAT, {.dbl=0.}, -2, 2, .flags=FLAGS },
64  { "shy", "set y shear factor", OFFSET(shy), AV_OPT_TYPE_FLOAT, {.dbl=0.}, -2, 2, .flags=FLAGS },
65  { "fillcolor", "set background fill color", OFFSET(fillcolor_str), AV_OPT_TYPE_STRING, {.str="black"}, 0, 0, .flags=FLAGS },
66  { "c", "set background fill color", OFFSET(fillcolor_str), AV_OPT_TYPE_STRING, {.str="black"}, 0, 0, .flags=FLAGS },
67  { "interp", "set interpolation", OFFSET(interp), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, .flags=FLAGS, "interp" },
68  { "nearest", "nearest neighbour", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, .flags=FLAGS, "interp" },
69  { "bilinear", "bilinear", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, .flags=FLAGS, "interp" },
70  { NULL }
71 };
72 
74 
76 {
77  ShearContext *s = ctx->priv;
78 
79  if (!strcmp(s->fillcolor_str, "none"))
80  s->fillcolor_enable = 0;
81  else if (av_parse_color(s->fillcolor, s->fillcolor_str, -1, ctx) >= 0)
82  s->fillcolor_enable = 1;
83  else
84  return AVERROR(EINVAL);
85  return 0;
86 }
87 
88 static const enum AVPixelFormat pix_fmts[] = {
113 };
114 
115 #define NN(type, name) \
116 static int filter_slice_nn##name(AVFilterContext *ctx, void *arg, int jobnr, \
117  int nb_jobs) \
118 { \
119  ThreadData *td = arg; \
120  AVFrame *in = td->in; \
121  AVFrame *out = td->out; \
122  ShearContext *s = ctx->priv; \
123  const float shx = s->shx; \
124  const float shy = s->shy; \
125  \
126  for (int p = 0; p < s->nb_planes; p++) { \
127  const int hsub = (p == 1 || p == 2) ? s->hsub: 1; \
128  const int vsub = (p == 1 || p == 2) ? s->vsub: 1; \
129  const int width = s->planewidth[p]; \
130  const int height = s->planeheight[p]; \
131  const int wx = vsub * shx * height * 0.5f / hsub; \
132  const int wy = hsub * shy * width * 0.5f / vsub; \
133  const int slice_start = (height * jobnr) / nb_jobs; \
134  const int slice_end = (height * (jobnr+1)) / nb_jobs; \
135  const int src_linesize = in->linesize[p] / sizeof(type); \
136  const int dst_linesize = out->linesize[p] / sizeof(type); \
137  const type *src = (const type *)in->data[p]; \
138  type *dst = (type *)out->data[p] + slice_start * dst_linesize; \
139  \
140  for (int y = slice_start; y < slice_end; y++) { \
141  for (int x = 0; x < width; x++) { \
142  int sx = x + vsub * shx * y / hsub - wx; \
143  int sy = y + hsub * shy * x / vsub - wy; \
144  \
145  if (sx >= 0 && sx < width - 1 && \
146  sy >= 0 && sy < height - 1) { \
147  dst[x] = src[sy * src_linesize + sx]; \
148  } \
149  } \
150  \
151  dst += dst_linesize; \
152  } \
153  } \
154  \
155  return 0; \
156 }
157 
158 NN(uint8_t, 8)
159 NN(uint16_t, 16)
160 
161 #define BL(type, name) \
162 static int filter_slice_bl##name(AVFilterContext *ctx, void *arg, int jobnr, \
163  int nb_jobs) \
164 { \
165  ThreadData *td = arg; \
166  AVFrame *in = td->in; \
167  AVFrame *out = td->out; \
168  ShearContext *s = ctx->priv; \
169  const int depth = s->depth; \
170  const float shx = s->shx; \
171  const float shy = s->shy; \
172  \
173  for (int p = 0; p < s->nb_planes; p++) { \
174  const int hsub = (p == 1 || p == 2) ? s->hsub: 1; \
175  const int vsub = (p == 1 || p == 2) ? s->vsub: 1; \
176  const int width = s->planewidth[p]; \
177  const int height = s->planeheight[p]; \
178  const float wx = vsub * shx * height * 0.5f / hsub; \
179  const float wy = hsub * shy * width * 0.5f / vsub; \
180  const int slice_start = (height * jobnr) / nb_jobs; \
181  const int slice_end = (height * (jobnr+1)) / nb_jobs; \
182  const int src_linesize = in->linesize[p] / sizeof(type); \
183  const int dst_linesize = out->linesize[p] / sizeof(type); \
184  const type *src = (const type *)in->data[p]; \
185  type *dst = (type *)out->data[p] + slice_start * dst_linesize; \
186  \
187  for (int y = slice_start; y < slice_end; y++) { \
188  for (int x = 0; x < width; x++) { \
189  const float sx = x + vsub * shx * y / hsub - wx; \
190  const float sy = y + hsub * shy * x / vsub - wy; \
191  \
192  if (sx >= 0 && sx < width - 1 && \
193  sy >= 0 && sy < height - 1) { \
194  float sum = 0.f; \
195  int ax = floorf(sx); \
196  int ay = floorf(sy); \
197  float du = sx - ax; \
198  float dv = sy - ay; \
199  int bx = FFMIN(ax + 1, width - 1); \
200  int by = FFMIN(ay + 1, height - 1); \
201  \
202  sum += (1.f - du) * (1.f - dv) * src[ay * src_linesize + ax];\
203  sum += ( du) * (1.f - dv) * src[ay * src_linesize + bx];\
204  sum += (1.f - du) * ( dv) * src[by * src_linesize + ax];\
205  sum += ( du) * ( dv) * src[by * src_linesize + bx];\
206  dst[x] = av_clip_uintp2_c(lrintf(sum), depth); \
207  } \
208  } \
209  \
210  dst += dst_linesize; \
211  } \
212  } \
213  \
214  return 0; \
215 }
216 
217 BL(uint8_t, 8)
218 BL(uint16_t, 16)
219 
221 {
222  AVFilterContext *ctx = inlink->dst;
223  ShearContext *s = ctx->priv;
224  AVFilterLink *outlink = ctx->outputs[0];
225  ThreadData td;
226  AVFrame *out;
227 
228  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
229  if (!out) {
230  av_frame_free(&in);
231  return AVERROR(ENOMEM);
232  }
234 
235  /* fill background */
236  if (s->fillcolor_enable)
237  ff_fill_rectangle(&s->draw, &s->color, out->data, out->linesize,
238  0, 0, outlink->w, outlink->h);
239 
240  td.in = in, td.out = out;
241  ff_filter_execute(ctx, s->filter_slice[s->interp], &td, NULL,
242  FFMIN(s->planeheight[1], ff_filter_get_nb_threads(ctx)));
243 
244  av_frame_free(&in);
245  return ff_filter_frame(outlink, out);
246 }
247 
248 static int config_output(AVFilterLink *outlink)
249 {
250  AVFilterContext *ctx = outlink->src;
251  ShearContext *s = ctx->priv;
253 
254  s->nb_planes = av_pix_fmt_count_planes(outlink->format);
255  s->depth = desc->comp[0].depth;
256  s->hsub = 1 << desc->log2_chroma_w;
257  s->vsub = 1 << desc->log2_chroma_h;
258  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(ctx->inputs[0]->w, desc->log2_chroma_w);
259  s->planewidth[0] = s->planewidth[3] = ctx->inputs[0]->w;
260  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(ctx->inputs[0]->h, desc->log2_chroma_h);
261  s->planeheight[0] = s->planeheight[3] = ctx->inputs[0]->h;
262 
263  ff_draw_init(&s->draw, outlink->format, 0);
264  ff_draw_color(&s->draw, &s->color, s->fillcolor);
265 
266  s->filter_slice[0] = s->depth <= 8 ? filter_slice_nn8 : filter_slice_nn16;
267  s->filter_slice[1] = s->depth <= 8 ? filter_slice_bl8 : filter_slice_bl16;
268 
269  return 0;
270 }
271 
273  const char *cmd,
274  const char *arg,
275  char *res,
276  int res_len,
277  int flags)
278 {
279  ShearContext *s = ctx->priv;
280  int ret;
281 
282  ret = ff_filter_process_command(ctx, cmd, arg, res, res_len, flags);
283  if (ret < 0)
284  return ret;
285 
286  ret = init(ctx);
287  if (ret < 0)
288  return ret;
289  ff_draw_color(&s->draw, &s->color, s->fillcolor);
290 
291  return 0;
292 }
293 
294 static const AVFilterPad inputs[] = {
295  {
296  .name = "default",
297  .type = AVMEDIA_TYPE_VIDEO,
298  .filter_frame = filter_frame,
299  },
300 };
301 
302 static const AVFilterPad outputs[] = {
303  {
304  .name = "default",
305  .type = AVMEDIA_TYPE_VIDEO,
306  .config_props = config_output,
307  },
308 };
309 
311  .name = "shear",
312  .description = NULL_IF_CONFIG_SMALL("Shear transform the input image."),
313  .priv_size = sizeof(ShearContext),
314  .init = init,
318  .priv_class = &shear_class,
320  .process_command = process_command,
321 };
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
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:502
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:481
ShearContext::draw
FFDrawContext draw
Definition: vf_shear.c:45
td
#define td
Definition: regdef.h:70
FFDrawColor
Definition: drawutils.h:50
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(shear)
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
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:1009
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2858
av_parse_color
int av_parse_color(uint8_t *rgba_color, const char *color_string, int slen, void *log_ctx)
Put the RGBA values that correspond to color_string in rgba_color.
Definition: parseutils.c:356
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_shear.c:248
ShearContext::fillcolor_str
char * fillcolor_str
Definition: vf_shear.c:41
FILTER_PIXFMTS_ARRAY
#define FILTER_PIXFMTS_ARRAY(array)
Definition: internal.h:170
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_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:116
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:494
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
pixdesc.h
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:501
NN
#define NN(type, name)
Definition: vf_shear.c:115
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:496
AVOption
AVOption.
Definition: opt.h:251
process_command
static int process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Definition: vf_shear.c:272
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_shear.c:220
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:459
FLAGS
#define FLAGS
Definition: vf_shear.c:60
float.h
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:175
ThreadData::out
AVFrame * out
Definition: af_adeclick.c:473
video.h
ThreadData::in
AVFrame * in
Definition: af_adecorrelate.c:154
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:497
ShearContext::shx
float shx
Definition: vf_shear.c:37
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:439
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: vf_shear.c:88
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2898
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:493
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:477
AV_PIX_FMT_GBRAP
@ AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:205
interp
interp
Definition: vf_curves.c:61
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:475
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:503
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:457
BL
#define BL(type, name)
Definition: vf_shear.c:161
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:443
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:49
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:462
AV_PIX_FMT_YUVJ411P
@ AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:276
av_cold
#define av_cold
Definition: attributes.h:90
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:471
ShearContext::interp
int interp
Definition: vf_shear.c:38
AV_PIX_FMT_YUVJ422P
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:79
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:479
ShearContext::vsub
int vsub
Definition: vf_shear.c:48
intreadwrite.h
s
#define s(width, name)
Definition: cbs_vp9.c:256
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:480
AV_PIX_FMT_YUVA420P
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:472
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:50
AV_PIX_FMT_YUVA444P12
#define AV_PIX_FMT_YUVA444P12
Definition: pixfmt.h:500
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:456
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:470
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AV_PIX_FMT_GRAY14
#define AV_PIX_FMT_GRAY14
Definition: pixfmt.h:442
outputs
static const AVFilterPad outputs[]
Definition: vf_shear.c:302
ff_draw_init
int ff_draw_init(FFDrawContext *draw, enum AVPixelFormat format, unsigned flags)
Definition: drawutils.c:154
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:190
AV_PIX_FMT_YUVJ444P
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
arg
const char * arg
Definition: jacosubdec.c:67
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:440
ShearContext::hsub
int hsub
Definition: vf_shear.c:48
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:478
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
NULL
#define NULL
Definition: coverity.c:32
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:603
OFFSET
#define OFFSET(x)
Definition: vf_shear.c:59
AV_PIX_FMT_YUVJ420P
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:78
parseutils.h
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:461
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:460
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
ShearContext::planewidth
int planewidth[4]
Definition: vf_shear.c:49
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:474
ShearContext::color
FFDrawColor color
Definition: vf_shear.c:46
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:115
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:464
ff_fill_rectangle
void ff_fill_rectangle(FFDrawContext *draw, FFDrawColor *color, uint8_t *dst[], int dst_linesize[], int dst_x, int dst_y, int w, int h)
Fill a rectangle with an uniform color.
Definition: drawutils.c:234
ShearContext::depth
int depth
Definition: vf_shear.c:44
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:466
ff_filter_process_command
int ff_filter_process_command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)
Generic processing of user supplied commands that are set in the same way as the filter options.
Definition: avfilter.c:873
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
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:498
inputs
static const AVFilterPad inputs[]
Definition: vf_shear.c:294
internal.h
AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:152
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Definition: opt.h:228
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:476
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:793
ThreadData
Used for passing data between threads.
Definition: dsddec.c:69
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
AV_PIX_FMT_YUVJ440P
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
Definition: pixfmt.h:100
shear_options
static const AVOption shear_options[]
Definition: vf_shear.c:62
FFDrawContext
Definition: drawutils.h:35
ShearContext::filter_slice
int(* filter_slice[2])(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_shear.c:52
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:55
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:458
ShearContext::nb_planes
int nb_planes
Definition: vf_shear.c:43
ff_draw_color
void ff_draw_color(FFDrawContext *draw, FFDrawColor *color, const uint8_t rgba[4])
Prepare a color.
Definition: drawutils.c:159
AVFilter
Filter definition.
Definition: avfilter.h:171
ret
ret
Definition: filter_design.txt:187
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:495
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:463
ShearContext::planeheight
int planeheight[4]
Definition: vf_shear.c:50
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:468
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_shear.c:75
ShearContext::shy
float shy
Definition: vf_shear.c:37
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_PIX_FMT_YUVA422P12
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:499
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
avfilter.h
ShearContext::fillcolor
uint8_t fillcolor[4]
color expressed either in YUVA or RGBA colorspace for the padding area
Definition: vf_shear.c:40
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
AVFilterContext
An instance of a filter.
Definition: avfilter.h:415
ShearContext
Definition: vf_shear.c:34
AV_PIX_FMT_GBRP
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:158
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:127
desc
const char * desc
Definition: libsvtav1.c:83
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:191
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
ShearContext::fillcolor_enable
int fillcolor_enable
Definition: vf_shear.c:42
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
ff_vf_shear
const AVFilter ff_vf_shear
Definition: vf_shear.c:310
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:465
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:469
avstring.h
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:441
drawutils.h
ff_filter_execute
static av_always_inline int ff_filter_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg, int *ret, int nb_jobs)
Definition: internal.h:142
int
int
Definition: ffmpeg_filter.c:156
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
AV_PIX_FMT_YUVA422P
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:166
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:467