FFmpeg coverage

Directory:	../../../ffmpeg/
File:	src/libavfilter/vf_amplify.c
Date:	2025-10-24 21:16:34

	Total	Coverage
Lines:	71	0.0%
Functions:	5	0.0%
Branches:	66	0.0%

  
      Line
      Branch
      Exec
      Source
    
      /*
    
       * Copyright (c) 2018 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 AmplifyContext {
    
          const AVClass *class;
    
          const AVPixFmtDescriptor *desc;
    
          int radius;
    
          float factor;
    
          float threshold;
    
          float tolerance;
    
          int planes;
    
          float llimit;
    
          float hlimit;
    
          int nb_inputs;
    
          int nb_frames;
    
          int depth;
    
          int nb_planes;
    
          int linesize[4];
    
          int height[4];
    
          AVFrame **frames;
    
      } AmplifyContext;
    
      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_GRAYF32,
    
          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_YUVA420P,  AV_PIX_FMT_YUVA422P,   AV_PIX_FMT_YUVA444P,
    
          AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16,
    
          AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16,
    
          AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
    
          AV_PIX_FMT_GBRAP,     AV_PIX_FMT_GBRAP10,    AV_PIX_FMT_GBRAP12,    AV_PIX_FMT_GBRAP16,
    
          AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32,
    
          AV_PIX_FMT_NONE
    
      };
    
      ✗
      static av_cold int init(AVFilterContext *ctx)
    
      {
    
      ✗
          AmplifyContext *s = ctx->priv;
    
      ✗
          s->nb_inputs = s->radius * 2 + 1;
    
      ✗
          s->frames = av_calloc(s->nb_inputs, sizeof(*s->frames));
    
      ✗
          if (!s->frames)
    
      ✗
              return AVERROR(ENOMEM);
    
      ✗
          return 0;
    
      }
    
      typedef struct ThreadData {
    
          AVFrame **in, *out;
    
      } ThreadData;
    
      #define AMPLIFY_SLICE(type, stype, clip)                                                        \
    
          const stype limit[2] = { s->llimit, s->hlimit };                                            \
    
                                                                                                      \
    
          for (int p = 0; p < s->nb_planes; p++) {                                                    \
    
              const int slice_start = (s->height[p] * jobnr) / nb_jobs;                               \
    
              const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs;                             \
    
              type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]);                    \
    
              ptrdiff_t dst_linesize = out->linesize[p] / sizeof(type);                               \
    
                                                                                                      \
    
              if (!((1 << p) & s->planes)) {                                                          \
    
                  av_image_copy_plane((uint8_t *)dst, out->linesize[p],                               \
    
                                      in[radius]->data[p] + slice_start * in[radius]->linesize[p],    \
    
                                      in[radius]->linesize[p],                                        \
    
                                      s->linesize[p], slice_end - slice_start);                       \
    
                  continue;                                                                           \
    
              }                                                                                       \
    
                                                                                                      \
    
              for (int y = slice_start; y < slice_end; y++) {                                         \
    
                  for (int x = 0; x < s->linesize[p] / sizeof(type); x++) {                           \
    
                      stype src = *(type *)(in[radius]->data[p] + y * in[radius]->linesize[p] + x * sizeof(type));\
    
                      float diff, abs_diff, avg;                                                      \
    
                      stype sum = 0;                                                                  \
    
                                                                                                      \
    
                      for (int i = 0; i < nb_inputs; i++) {                                           \
    
                          sum += *(type *)(in[i]->data[p] + y * in[i]->linesize[p] + x * sizeof(type));\
    
                      }                                                                               \
    
                                                                                                      \
    
                      avg = sum * scale;                                                              \
    
                      diff = src - avg;                                                               \
    
                      abs_diff = fabsf(diff);                                                         \
    
                                                                                                      \
    
                      if (abs_diff < threshold && abs_diff > tolerance) {                             \
    
                          float amp = copysignf(fminf(abs_diff * factor, limit[diff >= 0]), diff);    \
    
                          dst[x] = clip(src + amp, depth);                                            \
    
                      } else {                                                                        \
    
                          dst[x] = src;                                                               \
    
                      }                                                                               \
    
                  }                                                                                   \
    
                                                                                                      \
    
                  dst += dst_linesize;                                                                \
    
              }                                                                                       \
    
          }
    
      #define CLIP8(x, depth) av_clip_uint8(lrintf(x))
    
      #define CLIP16(x, depth) av_clip_uintp2_c(lrintf(x), depth)
    
      #define NOP(x, depth) (x)
    
      ✗
      static int amplify_frame(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
    
      {
    
      ✗
          AmplifyContext *s = ctx->priv;
    
      ✗
          ThreadData *td = arg;
    
      ✗
          AVFrame **in = td->in;
    
      ✗
          AVFrame *out = td->out;
    
      ✗
          const int radius = s->radius;
    
      ✗
          const int nb_inputs = s->nb_inputs;
    
      ✗
          const float threshold = s->threshold;
    
      ✗
          const float tolerance = s->tolerance;
    
      ✗
          const float scale = 1.f / nb_inputs;
    
      ✗
          const float factor = s->factor;
    
      ✗
          const int depth = s->depth;
    
      ✗
          if (s->depth <= 8) {
    
      ✗
              AMPLIFY_SLICE(uint8_t, int, CLIP8)
    
      ✗
          } else if (s->depth <= 16) {
    
      ✗
              AMPLIFY_SLICE(uint16_t, int, CLIP16)
    
          } else {
    
      ✗
              AMPLIFY_SLICE(float, float, NOP)
    
          }
    
      ✗
          return 0;
    
      }
    
      ✗
      static int config_output(AVFilterLink *outlink)
    
      {
    
      ✗
          AVFilterContext *ctx = outlink->src;
    
      ✗
          AmplifyContext *s = ctx->priv;
    
      ✗
          AVFilterLink *inlink = ctx->inputs[0];
    
          int ret;
    
      ✗
          s->desc = av_pix_fmt_desc_get(outlink->format);
    
      ✗
          if (!s->desc)
    
      ✗
              return AVERROR_BUG;
    
      ✗
          s->nb_planes = av_pix_fmt_count_planes(outlink->format);
    
      ✗
          s->depth = s->desc->comp[0].depth;
    
      ✗
          if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
    
      ✗
              return ret;
    
      ✗
          s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
    
      ✗
          s->height[0] = s->height[3] = inlink->h;
    
      ✗
          return 0;
    
      }
    
      ✗
      static av_cold void uninit(AVFilterContext *ctx)
    
      {
    
      ✗
          AmplifyContext *s = ctx->priv;
    
          int i;
    
      ✗
          if (s->frames) {
    
      ✗
              for (i = 0; i < s->nb_frames; i++)
    
      ✗
                  av_frame_free(&s->frames[i]);
    
          }
    
      ✗
          av_freep(&s->frames);
    
      ✗
      }
    
      ✗
      static int filter_frame(AVFilterLink *inlink, AVFrame *in)
    
      {
    
      ✗
          AVFilterContext *ctx = inlink->dst;
    
      ✗
          AVFilterLink *outlink = ctx->outputs[0];
    
      ✗
          AmplifyContext *s = ctx->priv;
    
          ThreadData td;
    
          AVFrame *out;
    
      ✗
          if (s->nb_frames < s->nb_inputs) {
    
      ✗
              s->frames[s->nb_frames] = in;
    
      ✗
              s->nb_frames++;
    
      ✗
              return 0;
    
          } else {
    
      ✗
              av_frame_free(&s->frames[0]);
    
      ✗
              memmove(&s->frames[0], &s->frames[1], sizeof(*s->frames) * (s->nb_inputs - 1));
    
      ✗
              s->frames[s->nb_inputs - 1] = in;
    
          }
    
      ✗
          if (!ctx->is_disabled) {
    
      ✗
              out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
    
      ✗
              if (!out)
    
      ✗
                  return AVERROR(ENOMEM);
    
      ✗
              av_frame_copy_props(out, s->frames[0]);
    
      ✗
              td.out = out;
    
      ✗
              td.in = s->frames;
    
      ✗
              ff_filter_execute(ctx, amplify_frame, &td, NULL,
    
      ✗
                                FFMIN(s->height[1], ff_filter_get_nb_threads(ctx)));
    
          } else {
    
      ✗
              out = av_frame_clone(s->frames[s->radius]);
    
      ✗
              if (!out)
    
      ✗
                  return AVERROR(ENOMEM);
    
      ✗
              out->pts = s->frames[0]->pts;
    
          }
    
      ✗
          return ff_filter_frame(outlink, out);
    
      }
    
      #define OFFSET(x) offsetof(AmplifyContext, x)
    
      #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
    
      #define VFT AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
    
      static const AVOption amplify_options[] = {
    
          { "radius", "set radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=2}, 1, 63, .flags = FLAGS },
    
          { "factor", "set factor", OFFSET(factor), AV_OPT_TYPE_FLOAT, {.dbl=2}, 0, UINT16_MAX, .flags = VFT },
    
          { "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=10}, 0, UINT16_MAX, .flags = VFT },
    
          { "tolerance", "set tolerance", OFFSET(tolerance), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, UINT16_MAX, .flags = VFT },
    
          { "low", "set low limit for amplification", OFFSET(llimit), AV_OPT_TYPE_FLOAT, {.dbl=UINT16_MAX}, 0, UINT16_MAX, .flags = VFT },
    
          { "high", "set high limit for amplification", OFFSET(hlimit), AV_OPT_TYPE_FLOAT, {.dbl=UINT16_MAX}, 0, UINT16_MAX, .flags = VFT },
    
          { "planes", "set what planes to filter", OFFSET(planes), AV_OPT_TYPE_FLAGS, {.i64=7},    0, 15,  VFT },
    
          { 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(amplify);
    
      const FFFilter ff_vf_amplify = {
    
          .p.name        = "amplify",
    
          .p.description = NULL_IF_CONFIG_SMALL("Amplify changes between successive video frames."),
    
          .p.priv_class  = &amplify_class,
    
          .p.flags       = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
    
          .priv_size     = sizeof(AmplifyContext),
    
          FILTER_OUTPUTS(outputs),
    
          FILTER_INPUTS(inputs),
    
          FILTER_PIXFMTS_ARRAY(pixel_fmts),
    
          .init          = init,
    
          .uninit        = uninit,
    
          .process_command = ff_filter_process_command,
    
      };

Line	Exec	Source
1		/*
2		* Copyright (c) 2018 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 AmplifyContext {
31		const AVClass *class;
32		const AVPixFmtDescriptor *desc;
33		int radius;
34		float factor;
35		float threshold;
36		float tolerance;
37		int planes;
38
39		float llimit;
40		float hlimit;
41		int nb_inputs;
42		int nb_frames;
43
44		int depth;
45		int nb_planes;
46		int linesize[4];
47		int height[4];
48
49		AVFrame **frames;
50		} AmplifyContext;
51
52		static const enum AVPixelFormat pixel_fmts[] = {
53		AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9,
54		AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14,
55		AV_PIX_FMT_GRAY16, AV_PIX_FMT_GRAYF32,
56		AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
57		AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
58		AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
59		AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
60		AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
61		AV_PIX_FMT_YUVJ411P,
62		AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
63		AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
64		AV_PIX_FMT_YUV440P10,
65		AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
66		AV_PIX_FMT_YUV440P12,
67		AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
68		AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
69		AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
70		AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
71		AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
72		AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16,
73		AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16,
74		AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
75		AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
76		AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32,
77		AV_PIX_FMT_NONE
78		};
79
80	✗	static av_cold int init(AVFilterContext *ctx)
81		{
82	✗	AmplifyContext *s = ctx->priv;
83
84	✗	s->nb_inputs = s->radius * 2 + 1;
85
86	✗	s->frames = av_calloc(s->nb_inputs, sizeof(*s->frames));
87	✗	if (!s->frames)
88	✗	return AVERROR(ENOMEM);
89
90	✗	return 0;
91		}
92
93		typedef struct ThreadData {
94		AVFrame *in, out;
95		} ThreadData;
96
97		#define AMPLIFY_SLICE(type, stype, clip) \
98		const stype limit[2] = { s->llimit, s->hlimit }; \
99		\
100		for (int p = 0; p < s->nb_planes; p++) { \
101		const int slice_start = (s->height[p] * jobnr) / nb_jobs; \
102		const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs; \
103		type dst = (type )(out->data[p] + slice_start * out->linesize[p]); \
104		ptrdiff_t dst_linesize = out->linesize[p] / sizeof(type); \
105		\
106		if (!((1 << p) & s->planes)) { \
107		av_image_copy_plane((uint8_t *)dst, out->linesize[p], \
108		in[radius]->data[p] + slice_start * in[radius]->linesize[p], \
109		in[radius]->linesize[p], \
110		s->linesize[p], slice_end - slice_start); \
111		continue; \
112		} \
113		\
114		for (int y = slice_start; y < slice_end; y++) { \
115		for (int x = 0; x < s->linesize[p] / sizeof(type); x++) { \
116		stype src = (type )(in[radius]->data[p] + y * in[radius]->linesize[p] + x * sizeof(type));\
117		float diff, abs_diff, avg; \
118		stype sum = 0; \
119		\
120		for (int i = 0; i < nb_inputs; i++) { \
121		sum += (type )(in[i]->data[p] + y * in[i]->linesize[p] + x * sizeof(type));\
122		} \
123		\
124		avg = sum * scale; \
125		diff = src - avg; \
126		abs_diff = fabsf(diff); \
127		\
128		if (abs_diff < threshold && abs_diff > tolerance) { \
129		float amp = copysignf(fminf(abs_diff * factor, limit[diff >= 0]), diff); \
130		dst[x] = clip(src + amp, depth); \
131		} else { \
132		dst[x] = src; \
133		} \
134		} \
135		\
136		dst += dst_linesize; \
137		} \
138		}
139
140		#define CLIP8(x, depth) av_clip_uint8(lrintf(x))
141		#define CLIP16(x, depth) av_clip_uintp2_c(lrintf(x), depth)
142		#define NOP(x, depth) (x)
143
144	✗	static int amplify_frame(AVFilterContext ctx, void arg, int jobnr, int nb_jobs)
145		{
146	✗	AmplifyContext *s = ctx->priv;
147	✗	ThreadData *td = arg;
148	✗	AVFrame **in = td->in;
149	✗	AVFrame *out = td->out;
150	✗	const int radius = s->radius;
151	✗	const int nb_inputs = s->nb_inputs;
152	✗	const float threshold = s->threshold;
153	✗	const float tolerance = s->tolerance;
154	✗	const float scale = 1.f / nb_inputs;
155	✗	const float factor = s->factor;
156	✗	const int depth = s->depth;
157
158	✗	if (s->depth <= 8) {
159	✗	AMPLIFY_SLICE(uint8_t, int, CLIP8)
160	✗	} else if (s->depth <= 16) {
161	✗	AMPLIFY_SLICE(uint16_t, int, CLIP16)
162		} else {
163	✗	AMPLIFY_SLICE(float, float, NOP)
164		}
165
166	✗	return 0;
167		}
168
169	✗	static int config_output(AVFilterLink *outlink)
170		{
171	✗	AVFilterContext *ctx = outlink->src;
172	✗	AmplifyContext *s = ctx->priv;
173	✗	AVFilterLink *inlink = ctx->inputs[0];
174		int ret;
175
176	✗	s->desc = av_pix_fmt_desc_get(outlink->format);
177	✗	if (!s->desc)
178	✗	return AVERROR_BUG;
179	✗	s->nb_planes = av_pix_fmt_count_planes(outlink->format);
180	✗	s->depth = s->desc->comp[0].depth;
181
182	✗	if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
183	✗	return ret;
184
185	✗	s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
186	✗	s->height[0] = s->height[3] = inlink->h;
187
188	✗	return 0;
189		}
190
191	✗	static av_cold void uninit(AVFilterContext *ctx)
192		{
193	✗	AmplifyContext *s = ctx->priv;
194		int i;
195
196	✗	if (s->frames) {
197	✗	for (i = 0; i < s->nb_frames; i++)
198	✗	av_frame_free(&s->frames[i]);
199		}
200	✗	av_freep(&s->frames);
201	✗	}
202
203	✗	static int filter_frame(AVFilterLink inlink, AVFrame in)
204		{
205	✗	AVFilterContext *ctx = inlink->dst;
206	✗	AVFilterLink *outlink = ctx->outputs[0];
207	✗	AmplifyContext *s = ctx->priv;
208		ThreadData td;
209		AVFrame *out;
210
211	✗	if (s->nb_frames < s->nb_inputs) {
212	✗	s->frames[s->nb_frames] = in;
213	✗	s->nb_frames++;
214	✗	return 0;
215		} else {
216	✗	av_frame_free(&s->frames[0]);
217	✗	memmove(&s->frames[0], &s->frames[1], sizeof(s->frames) (s->nb_inputs - 1));
218	✗	s->frames[s->nb_inputs - 1] = in;
219		}
220
221	✗	if (!ctx->is_disabled) {
222	✗	out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
223	✗	if (!out)
224	✗	return AVERROR(ENOMEM);
225	✗	av_frame_copy_props(out, s->frames[0]);
226
227	✗	td.out = out;
228	✗	td.in = s->frames;
229	✗	ff_filter_execute(ctx, amplify_frame, &td, NULL,
230	✗	FFMIN(s->height[1], ff_filter_get_nb_threads(ctx)));
231		} else {
232	✗	out = av_frame_clone(s->frames[s->radius]);
233	✗	if (!out)
234	✗	return AVERROR(ENOMEM);
235	✗	out->pts = s->frames[0]->pts;
236		}
237
238	✗	return ff_filter_frame(outlink, out);
239		}
240
241		#define OFFSET(x) offsetof(AmplifyContext, x)
242		#define FLAGS AV_OPT_FLAG_VIDEO_PARAM \| AV_OPT_FLAG_FILTERING_PARAM
243		#define VFT AV_OPT_FLAG_VIDEO_PARAM \| AV_OPT_FLAG_FILTERING_PARAM \| AV_OPT_FLAG_RUNTIME_PARAM
244
245		static const AVOption amplify_options[] = {
246		{ "radius", "set radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=2}, 1, 63, .flags = FLAGS },
247		{ "factor", "set factor", OFFSET(factor), AV_OPT_TYPE_FLOAT, {.dbl=2}, 0, UINT16_MAX, .flags = VFT },
248		{ "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=10}, 0, UINT16_MAX, .flags = VFT },
249		{ "tolerance", "set tolerance", OFFSET(tolerance), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, UINT16_MAX, .flags = VFT },
250		{ "low", "set low limit for amplification", OFFSET(llimit), AV_OPT_TYPE_FLOAT, {.dbl=UINT16_MAX}, 0, UINT16_MAX, .flags = VFT },
251		{ "high", "set high limit for amplification", OFFSET(hlimit), AV_OPT_TYPE_FLOAT, {.dbl=UINT16_MAX}, 0, UINT16_MAX, .flags = VFT },
252		{ "planes", "set what planes to filter", OFFSET(planes), AV_OPT_TYPE_FLAGS, {.i64=7}, 0, 15, VFT },
253		{ NULL },
254		};
255
256		static const AVFilterPad inputs[] = {
257		{
258		.name = "default",
259		.type = AVMEDIA_TYPE_VIDEO,
260		.filter_frame = filter_frame,
261		},
262		};
263
264		static const AVFilterPad outputs[] = {
265		{
266		.name = "default",
267		.type = AVMEDIA_TYPE_VIDEO,
268		.config_props = config_output,
269		},
270		};
271
272		AVFILTER_DEFINE_CLASS(amplify);
273
274		const FFFilter ff_vf_amplify = {
275		.p.name = "amplify",
276		.p.description = NULL_IF_CONFIG_SMALL("Amplify changes between successive video frames."),
277		.p.priv_class = &amplify_class,
278		.p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL \| AVFILTER_FLAG_SLICE_THREADS,
279		.priv_size = sizeof(AmplifyContext),
280		FILTER_OUTPUTS(outputs),
281		FILTER_INPUTS(inputs),
282		FILTER_PIXFMTS_ARRAY(pixel_fmts),
283		.init = init,
284		.uninit = uninit,
285		.process_command = ff_filter_process_command,
286		};
287

Function (Line)	Call count	Block coverage
amplify_frame (line 144)	not called	0.0%
config_output (line 169)	not called	0.0%
filter_frame (line 203)	not called	0.0%
init (line 80)	not called	0.0%
uninit (line 191)	not called	0.0%