FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_lagfun.c
Date: 2024-04-12 08:31:17
Exec Total Coverage
Lines: 0 48 0.0%
Functions: 0 9 0.0%
Branches: 0 70 0.0%

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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/mem.h"
23 #include "libavutil/opt.h"
24 #include "libavutil/pixdesc.h"
25
26 #include "avfilter.h"
27 #include "internal.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 AVFilter ff_vf_lagfun = {
222 .name = "lagfun",
223 .description = NULL_IF_CONFIG_SMALL("Slowly update darker pixels."),
224 .priv_size = sizeof(LagfunContext),
225 .priv_class = &lagfun_class,
226 .uninit = uninit,
227 FILTER_OUTPUTS(outputs),
228 FILTER_INPUTS(inputs),
229 FILTER_PIXFMTS_ARRAY(pixel_fmts),
230 .flags = AVFILTER_FLAG_SLICE_THREADS | AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
231 .process_command = ff_filter_process_command,
232 };
233