FFmpeg coverage

Directory:	../../../ffmpeg/
File:	src/libavfilter/vf_lagfun.c
Date:	2026-04-30 13:16:32

	Total	Coverage
Lines:	48	0.0%
Functions:	9	0.0%
Branches:	70	0.0%

  
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      /*
    
       * Copyright (c) 2019 Paul B Mahol
    
       *
    
       * This file is part of FFmpeg.
    
       *
    
       * FFmpeg is free software; you can redistribute it and/or
    
       * modify it under the terms of the GNU Lesser General Public
    
       * License as published by the Free Software Foundation; either
    
       * version 2.1 of the License, or (at your option) any later version.
    
       *
    
       * FFmpeg is distributed in the hope that it will be useful,
    
       * but WITHOUT ANY WARRANTY; without even the implied warranty of
    
       * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    
       * Lesser General Public License for more details.
    
       *
    
       * You should have received a copy of the GNU Lesser General Public
    
       * License along with FFmpeg; if not, write to the Free Software
    
       * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
    
       */
    
      #include "libavutil/imgutils.h"
    
      #include "libavutil/mem.h"
    
      #include "libavutil/opt.h"
    
      #include "libavutil/pixdesc.h"
    
      #include "avfilter.h"
    
      #include "filters.h"
    
      #include "video.h"
    
      typedef struct LagfunContext {
    
          const AVClass *class;
    
          float decay;
    
          int planes;
    
          int depth;
    
          int nb_planes;
    
          int linesize[4];
    
          int planewidth[4];
    
          int planeheight[4];
    
          float *old[4];
    
          int (*lagfun[2])(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
    
      } LagfunContext;
    
      static const enum AVPixelFormat pixel_fmts[] = {
    
          AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9,
    
          AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14,
    
          AV_PIX_FMT_GRAY16,
    
          AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
    
          AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
    
          AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
    
          AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
    
          AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
    
          AV_PIX_FMT_YUVJ411P,
    
          AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
    
          AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
    
          AV_PIX_FMT_YUV440P10,
    
          AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
    
          AV_PIX_FMT_YUV440P12,
    
          AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
    
          AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
    
          AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
    
          AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
    
          AV_PIX_FMT_GRAYF32, AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32,
    
          AV_PIX_FMT_NONE
    
      };
    
      typedef struct ThreadData {
    
          AVFrame *in, *out;
    
      } ThreadData;
    
      #define LAGFUN(name, type, round, disabled)                               \
    
      static int lagfun_frame##name(AVFilterContext *ctx, void *arg,            \
    
                                    int jobnr, int nb_jobs)                     \
    
      {                                                                         \
    
          LagfunContext *s = ctx->priv;                                         \
    
          const float decay = s->decay;                                         \
    
          ThreadData *td = arg;                                                 \
    
          AVFrame *in = td->in;                                                 \
    
          AVFrame *out = td->out;                                               \
    
                                                                                \
    
          for (int p = 0; p < s->nb_planes; p++) {                              \
    
              const int slice_start = (s->planeheight[p] * jobnr) / nb_jobs;    \
    
              const int slice_end = (s->planeheight[p] * (jobnr+1)) / nb_jobs;  \
    
              const int width = s->planewidth[p];                               \
    
              const type *src = (const type *)in->data[p] +                     \
    
                                slice_start * in->linesize[p] / sizeof(type);   \
    
              float *osrc = s->old[p] + slice_start * s->planewidth[p];         \
    
              type *dst = (type *)out->data[p] +                                \
    
                          slice_start * out->linesize[p] / sizeof(type);        \
    
                                                                                \
    
              if (!((1 << p) & s->planes)) {                                    \
    
                  av_image_copy_plane((uint8_t *)dst, out->linesize[p],         \
    
                                      (const uint8_t *)src, in->linesize[p],    \
    
                                      s->linesize[p], slice_end - slice_start); \
    
                  continue;                                                     \
    
              }                                                                 \
    
                                                                                \
    
              for (int y = slice_start; y < slice_end; y++) {                   \
    
                  for (int x = 0; x < width; x++) {                             \
    
                      const float v = fmaxf(src[x], osrc[x] * decay);           \
    
                                                                                \
    
                      osrc[x] = v;                                              \
    
                      if (disabled) {                                           \
    
                          dst[x] = src[x];                                      \
    
                      } else {                                                  \
    
                          dst[x] = round(v);                                    \
    
                      }                                                         \
    
                  }                                                             \
    
                                                                                \
    
                  src += in->linesize[p] / sizeof(type);                        \
    
                  osrc += width;                                                \
    
                  dst += out->linesize[p] / sizeof(type);                       \
    
              }                                                                 \
    
          }                                                                     \
    
                                                                                \
    
          return 0;                                                             \
    
      }
    
      ✗
      LAGFUN(8,  uint8_t,  lrintf, 0)
    
      ✗
      LAGFUN(16, uint16_t, lrintf, 0)
    
      ✗
      LAGFUN(32, float,          , 0)
    
      ✗
      LAGFUN(d8,  uint8_t,  lrintf, 1)
    
      ✗
      LAGFUN(d16, uint16_t, lrintf, 1)
    
      ✗
      LAGFUN(d32, float,          , 1)
    
      ✗
      static int config_output(AVFilterLink *outlink)
    
      {
    
      ✗
          AVFilterContext *ctx = outlink->src;
    
      ✗
          LagfunContext *s = ctx->priv;
    
      ✗
          AVFilterLink *inlink = ctx->inputs[0];
    
          const AVPixFmtDescriptor *desc;
    
          int ret;
    
      ✗
          desc = av_pix_fmt_desc_get(outlink->format);
    
      ✗
          if (!desc)
    
      ✗
              return AVERROR_BUG;
    
      ✗
          s->nb_planes = av_pix_fmt_count_planes(outlink->format);
    
      ✗
          s->depth = desc->comp[0].depth;
    
      ✗
          s->lagfun[0] = s->depth <= 8 ? lagfun_frame8 : s->depth <= 16 ? lagfun_frame16 : lagfun_frame32;
    
      ✗
          s->lagfun[1] = s->depth <= 8 ? lagfun_framed8 : s->depth <= 16 ? lagfun_framed16 : lagfun_framed32;
    
      ✗
          if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
    
      ✗
              return ret;
    
      ✗
          s->planewidth[1]  = s->planewidth[2]  = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
    
      ✗
          s->planewidth[0]  = s->planewidth[3]  = inlink->w;
    
      ✗
          s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
    
      ✗
          s->planeheight[0] = s->planeheight[3] = inlink->h;
    
      ✗
          for (int p = 0; p < s->nb_planes; p++) {
    
      ✗
              s->old[p] = av_calloc(s->planewidth[p] * s->planeheight[p], sizeof(*s->old[0]));
    
      ✗
              if (!s->old[p])
    
      ✗
                  return AVERROR(ENOMEM);
    
          }
    
      ✗
          return 0;
    
      }
    
      ✗
      static int filter_frame(AVFilterLink *inlink, AVFrame *in)
    
      {
    
      ✗
          AVFilterContext *ctx = inlink->dst;
    
      ✗
          AVFilterLink *outlink = ctx->outputs[0];
    
      ✗
          LagfunContext *s = ctx->priv;
    
          ThreadData td;
    
          AVFrame *out;
    
      ✗
          out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
    
      ✗
          if (!out) {
    
      ✗
              av_frame_free(&in);
    
      ✗
              return AVERROR(ENOMEM);
    
          }
    
      ✗
          av_frame_copy_props(out, in);
    
      ✗
          td.out = out;
    
      ✗
          td.in = in;
    
      ✗
          ff_filter_execute(ctx, s->lagfun[!!ctx->is_disabled], &td, NULL,
    
      ✗
                            FFMIN(s->planeheight[1], ff_filter_get_nb_threads(ctx)));
    
      ✗
          av_frame_free(&in);
    
      ✗
          return ff_filter_frame(outlink, out);
    
      }
    
      ✗
      static av_cold void uninit(AVFilterContext *ctx)
    
      {
    
      ✗
          LagfunContext *s = ctx->priv;
    
      ✗
          for (int p = 0; p < s->nb_planes; p++)
    
      ✗
              av_freep(&s->old[p]);
    
      ✗
      }
    
      #define OFFSET(x) offsetof(LagfunContext, x)
    
      #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
    
      static const AVOption lagfun_options[] = {
    
          { "decay",  "set decay",                 OFFSET(decay),  AV_OPT_TYPE_FLOAT, {.dbl=.95},  0,  1,  FLAGS },
    
          { "planes", "set what planes to filter", OFFSET(planes), AV_OPT_TYPE_FLAGS, {.i64=15},   0, 15,  FLAGS },
    
          { NULL },
    
      };
    
      static const AVFilterPad inputs[] = {
    
          {
    
              .name          = "default",
    
              .type          = AVMEDIA_TYPE_VIDEO,
    
              .filter_frame  = filter_frame,
    
          },
    
      };
    
      static const AVFilterPad outputs[] = {
    
          {
    
              .name          = "default",
    
              .type          = AVMEDIA_TYPE_VIDEO,
    
              .config_props  = config_output,
    
          },
    
      };
    
      AVFILTER_DEFINE_CLASS(lagfun);
    
      const FFFilter ff_vf_lagfun = {
    
          .p.name        = "lagfun",
    
          .p.description = NULL_IF_CONFIG_SMALL("Slowly update darker pixels."),
    
          .p.priv_class  = &lagfun_class,
    
          .p.flags       = AVFILTER_FLAG_SLICE_THREADS | AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
    
          .priv_size     = sizeof(LagfunContext),
    
          .uninit        = uninit,
    
          FILTER_OUTPUTS(outputs),
    
          FILTER_INPUTS(inputs),
    
          FILTER_PIXFMTS_ARRAY(pixel_fmts),
    
          .process_command = ff_filter_process_command,
    
      };

Line	Exec	Source
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/mem.h"
23		#include "libavutil/opt.h"
24		#include "libavutil/pixdesc.h"
25
26		#include "avfilter.h"
27		#include "filters.h"
28		#include "video.h"
29
30		typedef struct LagfunContext {
31		const AVClass *class;
32		float decay;
33		int planes;
34
35		int depth;
36		int nb_planes;
37		int linesize[4];
38		int planewidth[4];
39		int planeheight[4];
40
41		float *old[4];
42
43		int (lagfun[2])(AVFilterContext ctx, void *arg, int jobnr, int nb_jobs);
44		} LagfunContext;
45
46		static const enum AVPixelFormat pixel_fmts[] = {
47		AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9,
48		AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14,
49		AV_PIX_FMT_GRAY16,
50		AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
51		AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
52		AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
53		AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
54		AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
55		AV_PIX_FMT_YUVJ411P,
56		AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
57		AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
58		AV_PIX_FMT_YUV440P10,
59		AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
60		AV_PIX_FMT_YUV440P12,
61		AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
62		AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
63		AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
64		AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
65		AV_PIX_FMT_GRAYF32, AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32,
66		AV_PIX_FMT_NONE
67		};
68
69		typedef struct ThreadData {
70		AVFrame in, out;
71		} ThreadData;
72
73		#define LAGFUN(name, type, round, disabled) \
74		static int lagfun_frame##name(AVFilterContext ctx, void arg, \
75		int jobnr, int nb_jobs) \
76		{ \
77		LagfunContext *s = ctx->priv; \
78		const float decay = s->decay; \
79		ThreadData *td = arg; \
80		AVFrame *in = td->in; \
81		AVFrame *out = td->out; \
82		\
83		for (int p = 0; p < s->nb_planes; p++) { \
84		const int slice_start = (s->planeheight[p] * jobnr) / nb_jobs; \
85		const int slice_end = (s->planeheight[p] * (jobnr+1)) / nb_jobs; \
86		const int width = s->planewidth[p]; \
87		const type src = (const type )in->data[p] + \
88		slice_start * in->linesize[p] / sizeof(type); \
89		float osrc = s->old[p] + slice_start s->planewidth[p]; \
90		type dst = (type )out->data[p] + \
91		slice_start * out->linesize[p] / sizeof(type); \
92		\
93		if (!((1 << p) & s->planes)) { \
94		av_image_copy_plane((uint8_t *)dst, out->linesize[p], \
95		(const uint8_t *)src, in->linesize[p], \
96		s->linesize[p], slice_end - slice_start); \
97		continue; \
98		} \
99		\
100		for (int y = slice_start; y < slice_end; y++) { \
101		for (int x = 0; x < width; x++) { \
102		const float v = fmaxf(src[x], osrc[x] * decay); \
103		\
104		osrc[x] = v; \
105		if (disabled) { \
106		dst[x] = src[x]; \
107		} else { \
108		dst[x] = round(v); \
109		} \
110		} \
111		\
112		src += in->linesize[p] / sizeof(type); \
113		osrc += width; \
114		dst += out->linesize[p] / sizeof(type); \
115		} \
116		} \
117		\
118		return 0; \
119		}
120
121	✗	LAGFUN(8, uint8_t, lrintf, 0)
122	✗	LAGFUN(16, uint16_t, lrintf, 0)
123	✗	LAGFUN(32, float, , 0)
124
125	✗	LAGFUN(d8, uint8_t, lrintf, 1)
126	✗	LAGFUN(d16, uint16_t, lrintf, 1)
127	✗	LAGFUN(d32, float, , 1)
128
129	✗	static int config_output(AVFilterLink *outlink)
130		{
131	✗	AVFilterContext *ctx = outlink->src;
132	✗	LagfunContext *s = ctx->priv;
133	✗	AVFilterLink *inlink = ctx->inputs[0];
134		const AVPixFmtDescriptor *desc;
135		int ret;
136
137	✗	desc = av_pix_fmt_desc_get(outlink->format);
138	✗	if (!desc)
139	✗	return AVERROR_BUG;
140	✗	s->nb_planes = av_pix_fmt_count_planes(outlink->format);
141	✗	s->depth = desc->comp[0].depth;
142	✗	s->lagfun[0] = s->depth <= 8 ? lagfun_frame8 : s->depth <= 16 ? lagfun_frame16 : lagfun_frame32;
143	✗	s->lagfun[1] = s->depth <= 8 ? lagfun_framed8 : s->depth <= 16 ? lagfun_framed16 : lagfun_framed32;
144
145	✗	if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
146	✗	return ret;
147
148	✗	s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
149	✗	s->planewidth[0] = s->planewidth[3] = inlink->w;
150	✗	s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
151	✗	s->planeheight[0] = s->planeheight[3] = inlink->h;
152
153	✗	for (int p = 0; p < s->nb_planes; p++) {
154	✗	s->old[p] = av_calloc(s->planewidth[p] * s->planeheight[p], sizeof(*s->old[0]));
155	✗	if (!s->old[p])
156	✗	return AVERROR(ENOMEM);
157		}
158
159	✗	return 0;
160		}
161
162	✗	static int filter_frame(AVFilterLink inlink, AVFrame in)
163		{
164	✗	AVFilterContext *ctx = inlink->dst;
165	✗	AVFilterLink *outlink = ctx->outputs[0];
166	✗	LagfunContext *s = ctx->priv;
167		ThreadData td;
168		AVFrame *out;
169
170	✗	out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
171	✗	if (!out) {
172	✗	av_frame_free(&in);
173	✗	return AVERROR(ENOMEM);
174		}
175	✗	av_frame_copy_props(out, in);
176
177	✗	td.out = out;
178	✗	td.in = in;
179	✗	ff_filter_execute(ctx, s->lagfun[!!ctx->is_disabled], &td, NULL,
180	✗	FFMIN(s->planeheight[1], ff_filter_get_nb_threads(ctx)));
181
182	✗	av_frame_free(&in);
183	✗	return ff_filter_frame(outlink, out);
184		}
185
186	✗	static av_cold void uninit(AVFilterContext *ctx)
187		{
188	✗	LagfunContext *s = ctx->priv;
189
190	✗	for (int p = 0; p < s->nb_planes; p++)
191	✗	av_freep(&s->old[p]);
192	✗	}
193
194		#define OFFSET(x) offsetof(LagfunContext, x)
195		#define FLAGS AV_OPT_FLAG_VIDEO_PARAM \| AV_OPT_FLAG_FILTERING_PARAM \| AV_OPT_FLAG_RUNTIME_PARAM
196
197		static const AVOption lagfun_options[] = {
198		{ "decay", "set decay", OFFSET(decay), AV_OPT_TYPE_FLOAT, {.dbl=.95}, 0, 1, FLAGS },
199		{ "planes", "set what planes to filter", OFFSET(planes), AV_OPT_TYPE_FLAGS, {.i64=15}, 0, 15, FLAGS },
200		{ NULL },
201		};
202
203		static const AVFilterPad inputs[] = {
204		{
205		.name = "default",
206		.type = AVMEDIA_TYPE_VIDEO,
207		.filter_frame = filter_frame,
208		},
209		};
210
211		static const AVFilterPad outputs[] = {
212		{
213		.name = "default",
214		.type = AVMEDIA_TYPE_VIDEO,
215		.config_props = config_output,
216		},
217		};
218
219		AVFILTER_DEFINE_CLASS(lagfun);
220
221		const FFFilter ff_vf_lagfun = {
222		.p.name = "lagfun",
223		.p.description = NULL_IF_CONFIG_SMALL("Slowly update darker pixels."),
224		.p.priv_class = &lagfun_class,
225		.p.flags = AVFILTER_FLAG_SLICE_THREADS \| AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
226		.priv_size = sizeof(LagfunContext),
227		.uninit = uninit,
228		FILTER_OUTPUTS(outputs),
229		FILTER_INPUTS(inputs),
230		FILTER_PIXFMTS_ARRAY(pixel_fmts),
231		.process_command = ff_filter_process_command,
232		};
233

Function (Line)	Call count	Block coverage
config_output (line 129)	not called	0.0%
filter_frame (line 162)	not called	0.0%
lagfun_frame16 (line 122)	not called	0.0%
lagfun_frame32 (line 123)	not called	0.0%
lagfun_frame8 (line 121)	not called	0.0%
lagfun_framed16 (line 126)	not called	0.0%
lagfun_framed32 (line 127)	not called	0.0%
lagfun_framed8 (line 125)	not called	0.0%
uninit (line 186)	not called	0.0%