FFmpeg
vf_lagfun.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/imgutils.h"
22 #include "libavutil/intreadwrite.h"
23 #include "libavutil/opt.h"
24 #include "libavutil/pixdesc.h"
25 
26 #include "avfilter.h"
27 #include "formats.h"
28 #include "internal.h"
29 #include "video.h"
30 
31 typedef struct LagfunContext {
32  const AVClass *class;
34  float decay;
35  int planes;
36 
37  int depth;
38  int nb_planes;
39  int linesize[4];
40  int height[4];
41 
43 
44  int (*lagfun)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
46 
48 {
49  static const enum AVPixelFormat pixel_fmts[] = {
69  };
71  if (!formats)
72  return AVERROR(ENOMEM);
73  return ff_set_common_formats(ctx, formats);
74 }
75 
76 typedef struct ThreadData {
77  AVFrame *in, *out, *old;
78 } ThreadData;
79 
80 static int lagfun_frame8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
81 {
82  LagfunContext *s = ctx->priv;
83  const float decay = s->decay;
84  ThreadData *td = arg;
85  AVFrame *in = td->in;
86  AVFrame *out = td->out;
87  AVFrame *old = td->old;
88 
89  for (int p = 0; p < s->nb_planes; p++) {
90  const int slice_start = (s->height[p] * jobnr) / nb_jobs;
91  const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs;
92  const uint8_t *src = in->data[p] + slice_start * in->linesize[p];
93  const uint8_t *osrc = old->data[p] + slice_start * old->linesize[p];
94  uint8_t *dst = out->data[p] + slice_start * out->linesize[p];
95 
96  if (!((1 << p) & s->planes)) {
97  av_image_copy_plane(dst, out->linesize[p],
98  src, in->linesize[p],
99  s->linesize[p], slice_end - slice_start);
100  continue;
101  }
102 
103  for (int y = slice_start; y < slice_end; y++) {
104  for (int x = 0; x < s->linesize[p]; x++)
105  dst[x] = FFMAX(src[x], osrc[x] * decay);
106 
107  src += in->linesize[p];
108  osrc += old->linesize[p];
109  dst += out->linesize[p];
110  }
111  }
112 
113  return 0;
114 }
115 
116 static int lagfun_frame16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
117 {
118  LagfunContext *s = ctx->priv;
119  const float decay = s->decay;
120  ThreadData *td = arg;
121  AVFrame *in = td->in;
122  AVFrame *out = td->out;
123  AVFrame *old = td->old;
124 
125  for (int p = 0; p < s->nb_planes; p++) {
126  const int slice_start = (s->height[p] * jobnr) / nb_jobs;
127  const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs;
128  const uint16_t *src = (const uint16_t *)in->data[p] + slice_start * in->linesize[p] / 2;
129  const uint16_t *osrc = (const uint16_t *)old->data[p] + slice_start * old->linesize[p] / 2;
130  uint16_t *dst = (uint16_t *)out->data[p] + slice_start * out->linesize[p] / 2;
131 
132  if (!((1 << p) & s->planes)) {
133  av_image_copy_plane((uint8_t *)dst, out->linesize[p],
134  (uint8_t *)src, in->linesize[p],
135  s->linesize[p], slice_end - slice_start);
136  continue;
137  }
138 
139  for (int y = slice_start; y < slice_end; y++) {
140  for (int x = 0; x < s->linesize[p]; x++)
141  dst[x] = FFMAX(src[x], osrc[x] * decay);
142 
143  src += in->linesize[p] / 2;
144  osrc += old->linesize[p] / 2;
145  dst += out->linesize[p] / 2;
146  }
147  }
148 
149  return 0;
150 }
151 
152 static int config_output(AVFilterLink *outlink)
153 {
154  AVFilterContext *ctx = outlink->src;
155  LagfunContext *s = ctx->priv;
156  AVFilterLink *inlink = ctx->inputs[0];
157  int ret;
158 
159  s->desc = av_pix_fmt_desc_get(outlink->format);
160  if (!s->desc)
161  return AVERROR_BUG;
163  s->depth = s->desc->comp[0].depth;
164  s->lagfun = s->depth <= 8 ? lagfun_frame8 : lagfun_frame16;
165 
166  if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
167  return ret;
168 
169  s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
170  s->height[0] = s->height[3] = inlink->h;
171 
172  return 0;
173 }
174 
176 {
177  AVFilterContext *ctx = inlink->dst;
178  AVFilterLink *outlink = ctx->outputs[0];
179  LagfunContext *s = ctx->priv;
180  ThreadData td;
181  AVFrame *out;
182 
183  if (!s->old) {
184  s->old = av_frame_clone(in);
185  return ff_filter_frame(outlink, in);
186  }
187 
188  out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
189  if (!out) {
190  av_frame_free(&in);
191  return AVERROR(ENOMEM);
192  }
193  out->pts = in->pts;
194 
195  td.out = out;
196  td.in = in;
197  td.old = s->old;
198  ctx->internal->execute(ctx, s->lagfun, &td, NULL, FFMIN(s->height[1], ff_filter_get_nb_threads(ctx)));
199 
200  av_frame_free(&s->old);
201  av_frame_free(&in);
202  s->old = av_frame_clone(out);
203  return ff_filter_frame(outlink, out);
204 }
205 
207 {
208  LagfunContext *s = ctx->priv;
209 
210  av_frame_free(&s->old);
211 }
212 
213 #define OFFSET(x) offsetof(LagfunContext, x)
214 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
215 
216 static const AVOption lagfun_options[] = {
217  { "decay", "set decay", OFFSET(decay), AV_OPT_TYPE_FLOAT, {.dbl=.95}, 0, 1, FLAGS },
218  { "planes", "set what planes to filter", OFFSET(planes), AV_OPT_TYPE_FLAGS, {.i64=15}, 0, 15, FLAGS },
219  { NULL },
220 };
221 
222 static const AVFilterPad inputs[] = {
223  {
224  .name = "default",
225  .type = AVMEDIA_TYPE_VIDEO,
226  .filter_frame = filter_frame,
227  },
228  { NULL }
229 };
230 
231 static const AVFilterPad outputs[] = {
232  {
233  .name = "default",
234  .type = AVMEDIA_TYPE_VIDEO,
235  .config_props = config_output,
236  },
237  { NULL }
238 };
239 
241 
243  .name = "lagfun",
244  .description = NULL_IF_CONFIG_SMALL("Slowly update darker pixels."),
245  .priv_size = sizeof(LagfunContext),
246  .priv_class = &lagfun_class,
248  .uninit = uninit,
249  .outputs = outputs,
250  .inputs = inputs,
252 };
#define NULL
Definition: coverity.c:32
AVFrame * out
Definition: af_adeclick.c:488
AVFilter ff_vf_lagfun
Definition: vf_lagfun.c:242
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:389
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2522
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
AVOption.
Definition: opt.h:246
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:397
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2562
Main libavfilter public API header.
float decay
Definition: vf_lagfun.c:34
AVFrame * old
Definition: vf_lagfun.c:77
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
static const AVFilterPad inputs[]
Definition: vf_lagfun.c:222
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:403
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:367
AVFrame * old
Definition: vf_lagfun.c:42
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:391
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:99
#define OFFSET(x)
Definition: vf_lagfun.c:213
#define src
Definition: vp8dsp.c:254
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:368
const char * name
Pad name.
Definition: internal.h:60
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:369
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:346
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1080
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
#define av_cold
Definition: attributes.h:82
AVOptions.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:388
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:402
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 AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:400
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:392
A filter pad used for either input or output.
Definition: internal.h:54
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
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
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
const char * arg
Definition: jacosubdec.c:66
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:390
#define FFMAX(a, b)
Definition: common.h:94
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_lagfun.c:175
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:385
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:406
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:802
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:371
#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
static int query_formats(AVFilterContext *ctx)
Definition: vf_lagfun.c:47
AVFormatContext * ctx
Definition: movenc.c:48
const AVPixFmtDescriptor * desc
Definition: vf_lagfun.c:33
#define s(width, name)
Definition: cbs_vp9.c:257
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:386
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:405
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:540
if(ret)
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:398
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_lagfun.c:206
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:395
static const AVOption lagfun_options[]
Definition: vf_lagfun.c:216
Used for passing data between threads.
Definition: af_adeclick.c:487
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:326
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:370
int(* lagfun)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_lagfun.c:44
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
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
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:387
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
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
const char * name
Filter name.
Definition: avfilter.h:148
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:393
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:384
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static int lagfun_frame16(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_lagfun.c:116
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:396
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:404
static int lagfun_frame8(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_lagfun.c:80
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:378
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:388
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:394
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:309
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
AVFILTER_DEFINE_CLASS(lagfun)
int
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
Y , 8bpp.
Definition: pixfmt.h:74
static int config_output(AVFilterLink *outlink)
Definition: vf_lagfun.c:152
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:80
#define FLAGS
Definition: vf_lagfun.c:214
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:155
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2029
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 linesize[4]
Definition: vf_lagfun.c:39
FILE * out
Definition: movenc.c:54
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
AVFrame * in
Definition: af_afftdn.c:1082
formats
Definition: signature.h:48
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:338
internal API functions
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
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:399
static const AVFilterPad outputs[]
Definition: vf_lagfun.c:231
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
int height[4]
Definition: vf_lagfun.c:40