FFmpeg  4.3.7
vf_scroll.c
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1 /*
2  * Copyright (c) 2019 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/common.h"
22 #include "libavutil/opt.h"
23 #include "libavutil/pixdesc.h"
24 #include "avfilter.h"
25 #include "formats.h"
26 #include "internal.h"
27 
28 typedef struct ScrollContext {
29  const AVClass *class;
30 
31  float h_speed, v_speed;
32  float h_pos, v_pos;
33  float h_ipos, v_ipos;
34 
35  int pos_h[4], pos_v[4];
36 
38  int nb_planes;
39  int bytes;
40 
41  int planewidth[4];
42  int planeheight[4];
44 
46 {
47  static const enum AVPixelFormat pix_fmts[] = {
67  };
68 
69  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
70  if (!fmts_list)
71  return AVERROR(ENOMEM);
72  return ff_set_common_formats(ctx, fmts_list);
73 }
74 
75 typedef struct ThreadData {
76  AVFrame *in, *out;
77 } ThreadData;
78 
79 static int scroll_slice(AVFilterContext *ctx, void *arg, int jobnr,
80  int nb_jobs)
81 {
82  ScrollContext *s = ctx->priv;
83  ThreadData *td = arg;
84  AVFrame *in = td->in;
85  AVFrame *out = td->out;
86 
87  for (int p = 0; p < s->nb_planes; p++) {
88  const uint8_t *src = in->data[p];
89  const int h = s->planeheight[p];
90  const int w = s->planewidth[p] * s->bytes;
91  const int slice_start = (h * jobnr) / nb_jobs;
92  const int slice_end = (h * (jobnr+1)) / nb_jobs;
93  uint8_t *dst = out->data[p] + slice_start * out->linesize[p];
94 
95  for (int y = slice_start; y < slice_end; y++) {
96  int yy = (y + s->pos_v[p]) % h;
97  const uint8_t *ssrc = src + yy * in->linesize[p];
98 
99  if (s->pos_h[p] < w)
100  memcpy(dst, ssrc + s->pos_h[p], w - s->pos_h[p]);
101  if (s->pos_h[p] > 0)
102  memcpy(dst + w - s->pos_h[p], ssrc, s->pos_h[p]);
103 
104  dst += out->linesize[p];
105  }
106  }
107 
108  return 0;
109 }
110 
112 {
113  ScrollContext *s = ctx->priv;
114  ThreadData td;
115  int h_pos, v_pos;
116 
117  s->h_pos = fmodf(s->h_pos, in->width);
118  s->v_pos = fmodf(s->v_pos, in->height);
119 
120  h_pos = s->h_pos;
121  v_pos = s->v_pos;
122 
123  if (h_pos < 0)
124  h_pos += in->width;
125  if (v_pos < 0)
126  v_pos += in->height;
127 
128  s->pos_v[1] = s->pos_v[2] = AV_CEIL_RSHIFT(v_pos, s->desc->log2_chroma_h);
129  s->pos_v[0] = s->pos_v[3] = v_pos;
130  s->pos_h[1] = s->pos_h[2] = AV_CEIL_RSHIFT(h_pos, s->desc->log2_chroma_w) * s->bytes;
131  s->pos_h[0] = s->pos_h[3] = h_pos * s->bytes;
132 
133  td.in = in; td.out = out;
134  ctx->internal->execute(ctx, scroll_slice, &td, NULL,
136 
137  s->h_pos += s->h_speed * in->width;
138  s->v_pos += s->v_speed * in->height;
139 }
140 
141 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
142 {
143  AVFilterContext *ctx = inlink->dst;
144  AVFilterLink *outlink = ctx->outputs[0];
145  AVFrame *out;
146 
147  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
148  if (!out) {
149  av_frame_free(&in);
150  return AVERROR(ENOMEM);
151  }
152  av_frame_copy_props(out, in);
153 
154  scroll(ctx, in, out);
155 
156  av_frame_free(&in);
157  return ff_filter_frame(outlink, out);
158 }
159 
160 static int config_input(AVFilterLink *inlink)
161 {
162  AVFilterContext *ctx = inlink->dst;
163  ScrollContext *s = ctx->priv;
164 
165  s->desc = av_pix_fmt_desc_get(inlink->format);
166  s->nb_planes = s->desc->nb_components;
167  s->bytes = (s->desc->comp[0].depth + 7) >> 3;
168 
169  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
170  s->planeheight[0] = s->planeheight[3] = inlink->h;
171  s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, s->desc->log2_chroma_w);
172  s->planewidth[0] = s->planewidth[3] = inlink->w;
173 
174  s->h_pos = (1.f - s->h_ipos) * inlink->w;
175  s->v_pos = (1.f - s->v_ipos) * inlink->h;
176 
177  return 0;
178 }
179 
180 #define OFFSET(x) offsetof(ScrollContext, x)
181 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
182 #define VFT AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
183 
184 static const AVOption scroll_options[] = {
185  { "horizontal", "set the horizontal scrolling speed", OFFSET(h_speed), AV_OPT_TYPE_FLOAT, {.dbl=0.}, -1., 1., VFT },
186  { "h", "set the horizontal scrolling speed", OFFSET(h_speed), AV_OPT_TYPE_FLOAT, {.dbl=0.}, -1., 1., VFT },
187  { "vertical", "set the vertical scrolling speed", OFFSET(v_speed), AV_OPT_TYPE_FLOAT, {.dbl=0.}, -1., 1., VFT },
188  { "v", "set the vertical scrolling speed", OFFSET(v_speed), AV_OPT_TYPE_FLOAT, {.dbl=0.}, -1., 1., VFT },
189  { "hpos", "set initial horizontal position", OFFSET(h_ipos), AV_OPT_TYPE_FLOAT, {.dbl=0.}, 0, 1., FLAGS },
190  { "vpos", "set initial vertical position", OFFSET(v_ipos), AV_OPT_TYPE_FLOAT, {.dbl=0.}, 0, 1., FLAGS },
191  { NULL }
192 };
193 
195 
196 static const AVFilterPad scroll_inputs[] = {
197  {
198  .name = "default",
199  .type = AVMEDIA_TYPE_VIDEO,
200  .config_props = config_input,
201  .filter_frame = filter_frame,
202  },
203  { NULL }
204 };
205 
206 static const AVFilterPad scroll_outputs[] = {
207  {
208  .name = "default",
209  .type = AVMEDIA_TYPE_VIDEO,
210  },
211  { NULL }
212 };
213 
215  .name = "scroll",
216  .description = NULL_IF_CONFIG_SMALL("Scroll input video."),
217  .priv_size = sizeof(ScrollContext),
218  .priv_class = &scroll_class,
220  .inputs = scroll_inputs,
221  .outputs = scroll_outputs,
224 };
#define NULL
Definition: coverity.c:32
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:440
AVFrame * out
Definition: af_adeclick.c:494
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:432
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2549
This structure describes decoded (raw) audio or video data.
Definition: frame.h:300
AVOption.
Definition: opt.h:246
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:434
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:407
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:417
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_scroll.c:141
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:435
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
Main libavfilter public API header.
int planewidth[4]
Definition: vf_scroll.c:41
AVFilter ff_vf_scroll
Definition: vf_scroll.c:214
#define FLAGS
Definition: vf_scroll.c:181
float h_pos
Definition: vf_scroll.c:32
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:413
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:377
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:401
float h_ipos
Definition: vf_scroll.c:33
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:104
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:300
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:378
#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:125
const char * name
Pad name.
Definition: internal.h:60
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:379
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1075
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
AVOptions.
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:431
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:412
#define OFFSET(x)
Definition: vf_scroll.c:180
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
#define VFT
Definition: vf_scroll.c:182
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:410
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:402
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:439
static int query_formats(AVFilterContext *ctx)
Definition: vf_scroll.c:45
A filter pad used for either input or output.
Definition: internal.h:54
#define src
Definition: vp8dsp.c:254
AVFILTER_DEFINE_CLASS(scroll)
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:176
int width
Definition: frame.h:358
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:605
#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
int pos_v[4]
Definition: vf_scroll.c:35
#define AVERROR(e)
Definition: error.h:43
static int scroll_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_scroll.c:79
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:188
static void scroll(AVFilterContext *ctx, AVFrame *in, AVFrame *out)
Definition: vf_scroll.c:111
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:869
void * priv
private data for use by the filter
Definition: avfilter.h:353
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:116
int planeheight[4]
Definition: vf_scroll.c:42
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:441
const char * arg
Definition: jacosubdec.c:66
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:418
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:400
const AVPixFmtDescriptor * desc
Definition: vf_scroll.c:37
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:419
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
static const AVFilterPad scroll_outputs[]
Definition: vf_scroll.c:206
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:395
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:416
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:784
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:381
#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:438
uint8_t w
Definition: llviddspenc.c:38
AVFormatContext * ctx
Definition: movenc.c:48
#define s(width, name)
Definition: cbs_vp9.c:257
static const AVFilterPad scroll_inputs[]
Definition: vf_scroll.c:196
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:436
static int config_input(AVFilterLink *inlink)
Definition: vf_scroll.c:160
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:396
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:415
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:408
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:405
Used for passing data between threads.
Definition: dsddec.c:67
float v_pos
Definition: vf_scroll.c:32
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:331
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:380
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)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:397
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
float h_speed
Definition: vf_scroll.c:31
const char * name
Filter name.
Definition: avfilter.h:148
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:403
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:394
static const AVOption scroll_options[]
Definition: vf_scroll.c:184
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:406
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:414
#define flags(name, subs,...)
Definition: cbs_av1.c:565
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:378
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:398
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:404
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:314
float v_speed
Definition: vf_scroll.c:31
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
common internal and external API header
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:215
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:433
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:144
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2040
A list of supported formats for one end of a filter link.
Definition: formats.h:64
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
int height
Definition: frame.h:358
FILE * out
Definition: movenc.c:54
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: af_afftdn.c:1374
float v_ipos
Definition: vf_scroll.c:33
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
AVFrame * in
Definition: af_afftdn.c:1083
internal API functions
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:409
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:659
int pos_h[4]
Definition: vf_scroll.c:35
#define AV_PIX_FMT_YUVA422P12
Definition: pixfmt.h:437
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58