FFmpeg  3.3.8
vf_transpose.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2010 Stefano Sabatini
3  * Copyright (c) 2008 Vitor Sessak
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * transposition filter
25  * Based on MPlayer libmpcodecs/vf_rotate.c.
26  */
27 
28 #include <stdio.h>
29 
30 #include "libavutil/avassert.h"
31 #include "libavutil/imgutils.h"
32 #include "libavutil/internal.h"
33 #include "libavutil/intreadwrite.h"
34 #include "libavutil/opt.h"
35 #include "libavutil/pixdesc.h"
36 
37 #include "avfilter.h"
38 #include "formats.h"
39 #include "internal.h"
40 #include "video.h"
41 
42 typedef enum {
47 
53 };
54 
55 typedef struct TransContext {
56  const AVClass *class;
57  int hsub, vsub;
58  int planes;
59  int pixsteps[4];
60 
61  int passthrough; ///< PassthroughType, landscape passthrough mode enabled
62  int dir; ///< TransposeDir
63 } TransContext;
64 
66 {
68  int fmt, ret;
69 
70  for (fmt = 0; av_pix_fmt_desc_get(fmt); fmt++) {
72  if (!(desc->flags & AV_PIX_FMT_FLAG_PAL ||
75  desc->log2_chroma_w != desc->log2_chroma_h) &&
76  (ret = ff_add_format(&pix_fmts, fmt)) < 0)
77  return ret;
78  }
79 
80 
81  return ff_set_common_formats(ctx, pix_fmts);
82 }
83 
84 static int config_props_output(AVFilterLink *outlink)
85 {
86  AVFilterContext *ctx = outlink->src;
87  TransContext *s = ctx->priv;
88  AVFilterLink *inlink = ctx->inputs[0];
89  const AVPixFmtDescriptor *desc_out = av_pix_fmt_desc_get(outlink->format);
90  const AVPixFmtDescriptor *desc_in = av_pix_fmt_desc_get(inlink->format);
91 
92  if (s->dir&4) {
94  "dir values greater than 3 are deprecated, use the passthrough option instead\n");
95  s->dir &= 3;
97  }
98 
99  if ((inlink->w >= inlink->h && s->passthrough == TRANSPOSE_PT_TYPE_LANDSCAPE) ||
100  (inlink->w <= inlink->h && s->passthrough == TRANSPOSE_PT_TYPE_PORTRAIT)) {
101  av_log(ctx, AV_LOG_VERBOSE,
102  "w:%d h:%d -> w:%d h:%d (passthrough mode)\n",
103  inlink->w, inlink->h, inlink->w, inlink->h);
104  return 0;
105  } else {
107  }
108 
109  s->hsub = desc_in->log2_chroma_w;
110  s->vsub = desc_in->log2_chroma_h;
111  s->planes = av_pix_fmt_count_planes(outlink->format);
112 
113  av_assert0(desc_in->nb_components == desc_out->nb_components);
114 
115 
117 
118  outlink->w = inlink->h;
119  outlink->h = inlink->w;
120 
121  if (inlink->sample_aspect_ratio.num)
122  outlink->sample_aspect_ratio = av_div_q((AVRational) { 1, 1 },
123  inlink->sample_aspect_ratio);
124  else
125  outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
126 
127  av_log(ctx, AV_LOG_VERBOSE,
128  "w:%d h:%d dir:%d -> w:%d h:%d rotation:%s vflip:%d\n",
129  inlink->w, inlink->h, s->dir, outlink->w, outlink->h,
130  s->dir == 1 || s->dir == 3 ? "clockwise" : "counterclockwise",
131  s->dir == 0 || s->dir == 3);
132  return 0;
133 }
134 
135 static AVFrame *get_video_buffer(AVFilterLink *inlink, int w, int h)
136 {
137  TransContext *s = inlink->dst->priv;
138 
139  return s->passthrough ?
140  ff_null_get_video_buffer (inlink, w, h) :
141  ff_default_get_video_buffer(inlink, w, h);
142 }
143 
144 typedef struct ThreadData {
145  AVFrame *in, *out;
146 } ThreadData;
147 
148 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr,
149  int nb_jobs)
150 {
151  TransContext *s = ctx->priv;
152  ThreadData *td = arg;
153  AVFrame *out = td->out;
154  AVFrame *in = td->in;
155  int plane;
156 
157  for (plane = 0; plane < s->planes; plane++) {
158  int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
159  int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
160  int pixstep = s->pixsteps[plane];
161  int inh = AV_CEIL_RSHIFT(in->height, vsub);
162  int outw = AV_CEIL_RSHIFT(out->width, hsub);
163  int outh = AV_CEIL_RSHIFT(out->height, vsub);
164  int start = (outh * jobnr ) / nb_jobs;
165  int end = (outh * (jobnr+1)) / nb_jobs;
166  uint8_t *dst, *src;
167  int dstlinesize, srclinesize;
168  int x, y;
169 
170  dstlinesize = out->linesize[plane];
171  dst = out->data[plane] + start * dstlinesize;
172  src = in->data[plane];
173  srclinesize = in->linesize[plane];
174 
175  if (s->dir & 1) {
176  src += in->linesize[plane] * (inh - 1);
177  srclinesize *= -1;
178  }
179 
180  if (s->dir & 2) {
181  dst = out->data[plane] + dstlinesize * (outh - start - 1);
182  dstlinesize *= -1;
183  }
184 
185  switch (pixstep) {
186  case 1:
187  for (y = start; y < end; y++, dst += dstlinesize)
188  for (x = 0; x < outw; x++)
189  dst[x] = src[x * srclinesize + y];
190  break;
191  case 2:
192  for (y = start; y < end; y++, dst += dstlinesize) {
193  for (x = 0; x < outw; x++)
194  *((uint16_t *)(dst + 2 * x)) =
195  *((uint16_t *)(src + x * srclinesize + y * 2));
196  }
197  break;
198  case 3:
199  for (y = start; y < end; y++, dst += dstlinesize) {
200  for (x = 0; x < outw; x++) {
201  int32_t v = AV_RB24(src + x * srclinesize + y * 3);
202  AV_WB24(dst + 3 * x, v);
203  }
204  }
205  break;
206  case 4:
207  for (y = start; y < end; y++, dst += dstlinesize) {
208  for (x = 0; x < outw; x++)
209  *((uint32_t *)(dst + 4 * x)) =
210  *((uint32_t *)(src + x * srclinesize + y * 4));
211  }
212  break;
213  case 6:
214  for (y = start; y < end; y++, dst += dstlinesize) {
215  for (x = 0; x < outw; x++) {
216  int64_t v = AV_RB48(src + x * srclinesize + y*6);
217  AV_WB48(dst + 6*x, v);
218  }
219  }
220  break;
221  case 8:
222  for (y = start; y < end; y++, dst += dstlinesize) {
223  for (x = 0; x < outw; x++)
224  *((uint64_t *)(dst + 8*x)) = *((uint64_t *)(src + x * srclinesize + y*8));
225  }
226  break;
227  }
228  }
229 
230  return 0;
231 }
232 
233 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
234 {
235  AVFilterContext *ctx = inlink->dst;
236  TransContext *s = ctx->priv;
237  AVFilterLink *outlink = ctx->outputs[0];
238  ThreadData td;
239  AVFrame *out;
240 
241  if (s->passthrough)
242  return ff_filter_frame(outlink, in);
243 
244  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
245  if (!out) {
246  av_frame_free(&in);
247  return AVERROR(ENOMEM);
248  }
249  av_frame_copy_props(out, in);
250 
251  if (in->sample_aspect_ratio.num == 0) {
253  } else {
256  }
257 
258  td.in = in, td.out = out;
259  ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outlink->h, ff_filter_get_nb_threads(ctx)));
260  av_frame_free(&in);
261  return ff_filter_frame(outlink, out);
262 }
263 
264 #define OFFSET(x) offsetof(TransContext, x)
265 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
266 
267 static const AVOption transpose_options[] = {
268  { "dir", "set transpose direction", OFFSET(dir), AV_OPT_TYPE_INT, { .i64 = TRANSPOSE_CCLOCK_FLIP }, 0, 7, FLAGS, "dir" },
269  { "cclock_flip", "rotate counter-clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK_FLIP }, .flags=FLAGS, .unit = "dir" },
270  { "clock", "rotate clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK }, .flags=FLAGS, .unit = "dir" },
271  { "cclock", "rotate counter-clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK }, .flags=FLAGS, .unit = "dir" },
272  { "clock_flip", "rotate clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK_FLIP }, .flags=FLAGS, .unit = "dir" },
273 
274  { "passthrough", "do not apply transposition if the input matches the specified geometry",
275  OFFSET(passthrough), AV_OPT_TYPE_INT, {.i64=TRANSPOSE_PT_TYPE_NONE}, 0, INT_MAX, FLAGS, "passthrough" },
276  { "none", "always apply transposition", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_NONE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
277  { "portrait", "preserve portrait geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_PORTRAIT}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
278  { "landscape", "preserve landscape geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_LANDSCAPE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
279 
280  { NULL }
281 };
282 
284 
286  {
287  .name = "default",
288  .type = AVMEDIA_TYPE_VIDEO,
289  .get_video_buffer = get_video_buffer,
290  .filter_frame = filter_frame,
291  },
292  { NULL }
293 };
294 
296  {
297  .name = "default",
298  .config_props = config_props_output,
299  .type = AVMEDIA_TYPE_VIDEO,
300  },
301  { NULL }
302 };
303 
305  .name = "transpose",
306  .description = NULL_IF_CONFIG_SMALL("Transpose input video."),
307  .priv_size = sizeof(TransContext),
308  .priv_class = &transpose_class,
310  .inputs = avfilter_vf_transpose_inputs,
311  .outputs = avfilter_vf_transpose_outputs,
313 };
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:132
int plane
Definition: avisynth_c.h:422
#define NULL
Definition: coverity.c:32
#define AV_RB48(x)
Definition: intreadwrite.h:477
const char * s
Definition: avisynth_c.h:768
AVFILTER_DEFINE_CLASS(transpose)
AVFrame * out
Definition: af_sofalizer.c:587
AVRational av_div_q(AVRational b, AVRational c)
Divide one rational by another.
Definition: rational.c:88
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2333
This structure describes decoded (raw) audio or video data.
Definition: frame.h:187
AVOption.
Definition: opt.h:246
const char * fmt
Definition: avisynth_c.h:769
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2373
Main libavfilter public API header.
const char * desc
Definition: nvenc.c:60
TransposeDir
Definition: vf_transpose.c:48
int num
Numerator.
Definition: rational.h:59
#define AV_RB24
Definition: intreadwrite.h:64
AVFrame * ff_null_get_video_buffer(AVFilterLink *link, int w, int h)
Definition: video.c:39
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:92
#define src
Definition: vp8dsp.c:254
AVFilter ff_vf_transpose
Definition: vf_transpose.c:304
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
static const AVFilterPad avfilter_vf_transpose_outputs[]
Definition: vf_transpose.c:295
void av_image_fill_max_pixsteps(int max_pixsteps[4], int max_pixstep_comps[4], const AVPixFmtDescriptor *pixdesc)
Compute the max pixel step for each plane of an image with a format described by pixdesc.
Definition: imgutils.c:35
const char * name
Pad name.
Definition: internal.h:60
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:331
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1125
AVFrame * in
Definition: af_sofalizer.c:587
uint8_t
AVOptions.
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
#define AV_WB48(p, darg)
Definition: intreadwrite.h:486
static int flags
Definition: log.c:57
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
#define av_log(a,...)
A filter pad used for either input or output.
Definition: internal.h:54
int width
width and height of the video frame
Definition: frame.h:239
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:568
#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
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:163
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:179
void * priv
private data for use by the filter
Definition: avfilter.h:338
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:116
const char * arg
Definition: jacosubdec.c:66
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
Definition: pixdesc.h:140
simple assert() macros that are a bit more flexible than ISO C assert().
int ff_add_format(AVFilterFormats **avff, int64_t fmt)
Add fmt to the list of media formats contained in *avff.
Definition: formats.c:337
int pixsteps[4]
Definition: vf_transpose.c:59
common internal API header
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:831
#define FFMIN(a, b)
Definition: common.h:96
int32_t
AVFormatContext * ctx
Definition: movenc.c:48
#define AV_WB24(p, d)
Definition: intreadwrite.h:455
static int query_formats(AVFilterContext *ctx)
Definition: vf_transpose.c:65
#define FLAGS
Definition: vf_transpose.c:265
PassthroughType
Definition: vf_transpose.c:42
static const AVOption transpose_options[]
Definition: vf_transpose.c:267
static const AVFilterPad outputs[]
Definition: af_afftfilt.c:386
int passthrough
PassthroughType, landscape passthrough mode enabled.
Definition: vf_transpose.c:61
static const AVFilterPad inputs[]
Definition: af_afftfilt.c:376
static AVFrame * get_video_buffer(AVFilterLink *inlink, int w, int h)
Definition: vf_transpose.c:135
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:218
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
int dir
TransposeDir.
Definition: vf_transpose.c:62
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:266
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
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
Rational number (pair of numerator and denominator).
Definition: rational.h:58
const char * name
Filter name.
Definition: avfilter.h:148
#define AV_PIX_FMT_FLAG_BITSTREAM
All values of a component are bit-wise packed end to end.
Definition: pixdesc.h:136
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:335
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:363
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:201
AVFrame * ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
Definition: video.c:44
#define transpose(x)
int den
Denominator.
Definition: rational.h:60
avfilter_execute_func * execute
Definition: internal.h:155
#define OFFSET(x)
Definition: vf_transpose.c:264
static const AVFilterPad avfilter_vf_transpose_inputs[]
Definition: vf_transpose.c:285
A list of supported formats for one end of a filter link.
Definition: formats.h:64
An instance of a filter.
Definition: avfilter.h:323
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_transpose.c:148
int height
Definition: frame.h:239
FILE * out
Definition: movenc.c:54
void INT64 start
Definition: avisynth_c.h:690
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_transpose.c:233
internal API functions
static int config_props_output(AVFilterLink *outlink)
Definition: vf_transpose.c:84
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:596
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58