FFmpeg  4.4.4
vf_weave.c
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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/imgutils.h"
22 #include "libavutil/opt.h"
23 #include "libavutil/pixdesc.h"
24 #include "avfilter.h"
25 #include "internal.h"
26 
27 typedef struct WeaveContext {
28  const AVClass *class;
31  int nb_planes;
32  int planeheight[4];
33  int linesize[4];
34 
36 } WeaveContext;
37 
38 #define OFFSET(x) offsetof(WeaveContext, x)
39 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
40 
41 static const AVOption weave_options[] = {
42  { "first_field", "set first field", OFFSET(first_field), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "field"},
43  { "top", "set top field first", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "field"},
44  { "t", "set top field first", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "field"},
45  { "bottom", "set bottom field first", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "field"},
46  { "b", "set bottom field first", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "field"},
47  { NULL }
48 };
49 
51 
53 {
55  int ret;
56 
60  if (ret < 0)
61  return ret;
63 }
64 
65 static int config_props_output(AVFilterLink *outlink)
66 {
67  AVFilterContext *ctx = outlink->src;
68  WeaveContext *s = ctx->priv;
69  AVFilterLink *inlink = ctx->inputs[0];
71  int ret;
72 
73  if (!s->double_weave) {
74  outlink->time_base.num = inlink->time_base.num * 2;
75  outlink->time_base.den = inlink->time_base.den;
76  outlink->frame_rate.num = inlink->frame_rate.num;
77  outlink->frame_rate.den = inlink->frame_rate.den * 2;
78  }
79  outlink->w = inlink->w;
80  outlink->h = inlink->h * 2;
81 
82  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
83  return ret;
84 
85  s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
86  s->planeheight[0] = s->planeheight[3] = inlink->h;
87 
88  s->nb_planes = av_pix_fmt_count_planes(inlink->format);
89 
90  return 0;
91 }
92 
93 typedef struct ThreadData {
94  AVFrame *in, *out;
95 } ThreadData;
96 
97 static int weave_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
98 {
99  AVFilterLink *inlink = ctx->inputs[0];
100  WeaveContext *s = ctx->priv;
101  ThreadData *td = arg;
102  AVFrame *in = td->in;
103  AVFrame *out = td->out;
104 
105  const int weave = (s->double_weave && !(inlink->frame_count_out & 1));
106  const int field1 = weave ? s->first_field : (!s->first_field);
107  const int field2 = weave ? (!s->first_field) : s->first_field;
108 
109  for (int i = 0; i < s->nb_planes; i++) {
110  const int height = s->planeheight[i];
111  const int start = (height * jobnr) / nb_jobs;
112  const int end = (height * (jobnr+1)) / nb_jobs;
113 
114  av_image_copy_plane(out->data[i] + out->linesize[i] * field1 +
115  out->linesize[i] * start * 2,
116  out->linesize[i] * 2,
117  in->data[i] + start * in->linesize[i],
118  in->linesize[i],
119  s->linesize[i], end - start);
120  av_image_copy_plane(out->data[i] + out->linesize[i] * field2 +
121  out->linesize[i] * start * 2,
122  out->linesize[i] * 2,
123  s->prev->data[i] + start * s->prev->linesize[i],
124  s->prev->linesize[i],
125  s->linesize[i], end - start);
126  }
127 
128  return 0;
129 }
130 
131 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
132 {
133  AVFilterContext *ctx = inlink->dst;
134  WeaveContext *s = ctx->priv;
135  AVFilterLink *outlink = ctx->outputs[0];
136  ThreadData td;
137  AVFrame *out;
138 
139  if (!s->prev) {
140  s->prev = in;
141  return 0;
142  }
143 
144  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
145  if (!out) {
146  av_frame_free(&in);
147  av_frame_free(&s->prev);
148  return AVERROR(ENOMEM);
149  }
151 
152  td.out = out, td.in = in;
153  ctx->internal->execute(ctx, weave_slice, &td, NULL, FFMIN(s->planeheight[1],
155 
156  out->pts = s->double_weave ? s->prev->pts : in->pts / 2;
157  out->interlaced_frame = 1;
158  out->top_field_first = !s->first_field;
159 
160  if (!s->double_weave)
161  av_frame_free(&in);
162  av_frame_free(&s->prev);
163  if (s->double_weave)
164  s->prev = in;
165  return ff_filter_frame(outlink, out);
166 }
167 
169 {
170  WeaveContext *s = ctx->priv;
171 
172  av_frame_free(&s->prev);
173 }
174 
175 static const AVFilterPad weave_inputs[] = {
176  {
177  .name = "default",
178  .type = AVMEDIA_TYPE_VIDEO,
179  .filter_frame = filter_frame,
180  },
181  { NULL }
182 };
183 
184 static const AVFilterPad weave_outputs[] = {
185  {
186  .name = "default",
187  .type = AVMEDIA_TYPE_VIDEO,
188  .config_props = config_props_output,
189  },
190  { NULL }
191 };
192 
194  .name = "weave",
195  .description = NULL_IF_CONFIG_SMALL("Weave input video fields into frames."),
196  .priv_size = sizeof(WeaveContext),
197  .priv_class = &weave_class,
199  .uninit = uninit,
200  .inputs = weave_inputs,
203 };
204 
206 {
207  WeaveContext *s = ctx->priv;
208 
209  if (!strcmp(ctx->filter->name, "doubleweave"))
210  s->double_weave = 1;
211 
212  return 0;
213 }
214 
215 #define doubleweave_options weave_options
217 
219  .name = "doubleweave",
220  .description = NULL_IF_CONFIG_SMALL("Weave input video fields into double number of frames."),
221  .priv_size = sizeof(WeaveContext),
222  .priv_class = &doubleweave_class,
224  .init = init,
225  .uninit = uninit,
226  .inputs = weave_inputs,
229 };
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
#define av_cold
Definition: attributes.h:88
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)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1096
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
Main libavfilter public API header.
#define flags(name, subs,...)
Definition: cbs_av1.c:561
#define s(width, name)
Definition: cbs_vp9.c:257
#define FFMIN(a, b)
Definition: common.h:105
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
#define NULL
Definition: coverity.c:32
int ff_formats_pixdesc_filter(AVFilterFormats **rfmts, unsigned want, unsigned rej)
Construct a formats list containing all pixel formats with certain properties.
Definition: formats.c:367
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:587
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
@ AV_OPT_TYPE_INT
Definition: opt.h:225
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:117
#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:203
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:658
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
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
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
for(j=16;j >0;--j)
misc image utilities
int i
Definition: input.c:407
const char * arg
Definition: jacosubdec.c:66
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
const char * desc
Definition: libsvtav1.c:79
AVOptions.
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2613
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
Definition: pixdesc.h:140
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:132
#define td
Definition: regdef.h:70
formats
Definition: signature.h:48
Describe the class of an AVClass context structure.
Definition: log.h:67
An instance of a filter.
Definition: avfilter.h:341
A list of supported formats for one end of a filter link.
Definition: formats.h:65
A filter pad used for either input or output.
Definition: internal.h:54
const char * name
Pad name.
Definition: internal.h:60
Filter definition.
Definition: avfilter.h:145
const char * name
Filter name.
Definition: avfilter.h:149
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1699
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
AVOption.
Definition: opt.h:248
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
int num
Numerator.
Definition: rational.h:59
int den
Denominator.
Definition: rational.h:60
Used for passing data between threads.
Definition: dsddec.c:67
AVFrame * out
Definition: af_adeclick.c:502
AVFrame * in
Definition: af_adenorm.c:223
int nb_planes
Definition: vf_weave.c:31
int first_field
Definition: vf_weave.c:29
int planeheight[4]
Definition: vf_weave.c:32
int linesize[4]
Definition: vf_weave.c:33
int double_weave
Definition: vf_weave.c:30
AVFrame * prev
Definition: vf_weave.c:35
FILE * out
Definition: movenc.c:54
AVFormatContext * ctx
Definition: movenc.c:48
#define height
static int first_field(const struct video_data *s)
Definition: v4l2.c:234
static const AVFilterPad weave_outputs[]
Definition: vf_weave.c:184
static const AVOption weave_options[]
Definition: vf_weave.c:41
static int query_formats(AVFilterContext *ctx)
Definition: vf_weave.c:52
#define FLAGS
Definition: vf_weave.c:39
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_weave.c:131
AVFilter ff_vf_weave
Definition: vf_weave.c:193
static av_cold int init(AVFilterContext *ctx)
Definition: vf_weave.c:205
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_weave.c:168
AVFILTER_DEFINE_CLASS(weave)
static int config_props_output(AVFilterLink *outlink)
Definition: vf_weave.c:65
#define OFFSET(x)
Definition: vf_weave.c:38
static int weave_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_weave.c:97
AVFilter ff_vf_doubleweave
Definition: vf_weave.c:218
static const AVFilterPad weave_inputs[]
Definition: vf_weave.c:175
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