FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_limiter.c
Date: 2024-04-19 07:31:02
Exec Total Coverage
Lines: 0 69 0.0%
Functions: 0 7 0.0%
Branches: 0 34 0.0%

Line Branch Exec Source
1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include "libavutil/attributes.h"
20 #include "libavutil/common.h"
21 #include "libavutil/imgutils.h"
22 #include "libavutil/opt.h"
23 #include "libavutil/pixdesc.h"
24 #include "avfilter.h"
25 #include "internal.h"
26 #include "limiter.h"
27 #include "video.h"
28
29 typedef struct ThreadData {
30 AVFrame *in;
31 AVFrame *out;
32 } ThreadData;
33
34 typedef struct LimiterContext {
35 const AVClass *class;
36 int min;
37 int max;
38 int planes;
39 int nb_planes;
40 int linesize[4];
41 int width[4];
42 int height[4];
43
44 LimiterDSPContext dsp;
45 } LimiterContext;
46
47 #define OFFSET(x) offsetof(LimiterContext, x)
48 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
49
50 static const AVOption limiter_options[] = {
51 { "min", "set min value", OFFSET(min), AV_OPT_TYPE_INT, {.i64=0}, 0, 65535, .flags = FLAGS },
52 { "max", "set max value", OFFSET(max), AV_OPT_TYPE_INT, {.i64=65535}, 0, 65535, .flags = FLAGS },
53 { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, .flags = FLAGS },
54 { NULL }
55 };
56
57 AVFILTER_DEFINE_CLASS(limiter);
58
59 static av_cold int init(AVFilterContext *ctx)
60 {
61 LimiterContext *s = ctx->priv;
62
63 if (s->min > s->max)
64 return AVERROR(EINVAL);
65 return 0;
66 }
67
68 static const enum AVPixelFormat pix_fmts[] = {
69 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
70 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
71 AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
72 AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
73 AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
74 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
75 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
76 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
77 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
78 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
79 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
80 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
81 AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
82 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
83 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
84 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
85 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
86 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
87 AV_PIX_FMT_NONE
88 };
89
90 #define LIMITER(n, type) \
91 static void limiter##n(const uint8_t *ssrc, uint8_t *ddst, \
92 ptrdiff_t slinesize, ptrdiff_t dlinesize,\
93 int w, int h, int min, int max) \
94 { \
95 const type *src = (const type *)ssrc; \
96 type *dst = (type *)ddst; \
97 \
98 dlinesize /= sizeof(type); \
99 slinesize /= sizeof(type); \
100 \
101 for (int y = 0; y < h; y++) { \
102 for (int x = 0; x < w; x++) { \
103 dst[x] = av_clip(src[x], min, max); \
104 } \
105 \
106 dst += dlinesize; \
107 src += slinesize; \
108 } \
109 }
110
111 LIMITER(8, uint8_t)
112 LIMITER(16, uint16_t)
113
114 static int config_input(AVFilterLink *inlink)
115 {
116 AVFilterContext *ctx = inlink->dst;
117 LimiterContext *s = ctx->priv;
118 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
119 int depth, vsub, hsub, ret;
120
121 s->nb_planes = av_pix_fmt_count_planes(inlink->format);
122
123 if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
124 return ret;
125
126 depth = desc->comp[0].depth;
127 hsub = desc->log2_chroma_w;
128 vsub = desc->log2_chroma_h;
129 s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
130 s->height[0] = s->height[3] = inlink->h;
131 s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
132 s->width[0] = s->width[3] = inlink->w;
133
134 s->max = FFMIN(s->max, (1 << depth) - 1);
135 s->min = FFMIN(s->min, (1 << depth) - 1);
136
137 if (depth == 8) {
138 s->dsp.limiter = limiter8;
139 } else {
140 s->dsp.limiter = limiter16;
141 }
142
143 #if ARCH_X86
144 ff_limiter_init_x86(&s->dsp, desc->comp[0].depth);
145 #endif
146
147 return 0;
148 }
149
150 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
151 {
152 LimiterContext *s = ctx->priv;
153 ThreadData *td = arg;
154 AVFrame *in = td->in;
155 AVFrame *out = td->out;
156 int p;
157
158 for (p = 0; p < s->nb_planes; p++) {
159 const int h = s->height[p];
160 const int slice_start = (h * jobnr) / nb_jobs;
161 const int slice_end = (h * (jobnr+1)) / nb_jobs;
162
163 if (!((1 << p) & s->planes)) {
164 if (out != in)
165 av_image_copy_plane(out->data[p] + slice_start * out->linesize[p],
166 out->linesize[p],
167 in->data[p] + slice_start * in->linesize[p],
168 in->linesize[p],
169 s->linesize[p], slice_end - slice_start);
170 continue;
171 }
172
173 s->dsp.limiter(in->data[p] + slice_start * in->linesize[p],
174 out->data[p] + slice_start * out->linesize[p],
175 in->linesize[p], out->linesize[p],
176 s->width[p], slice_end - slice_start,
177 s->min, s->max);
178 }
179
180 return 0;
181 }
182
183 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
184 {
185 AVFilterContext *ctx = inlink->dst;
186 LimiterContext *s = ctx->priv;
187 AVFilterLink *outlink = ctx->outputs[0];
188 ThreadData td;
189 AVFrame *out;
190
191 if (av_frame_is_writable(in)) {
192 out = in;
193 } else {
194 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
195 if (!out) {
196 av_frame_free(&in);
197 return AVERROR(ENOMEM);
198 }
199 av_frame_copy_props(out, in);
200 }
201
202 td.out = out;
203 td.in = in;
204 ff_filter_execute(ctx, filter_slice, &td, NULL,
205 FFMIN(s->height[2], ff_filter_get_nb_threads(ctx)));
206 if (out != in)
207 av_frame_free(&in);
208
209 return ff_filter_frame(outlink, out);
210 }
211
212 static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
213 char *res, int res_len, int flags)
214 {
215 int ret;
216
217 ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
218 if (ret < 0)
219 return ret;
220
221 return config_input(ctx->inputs[0]);
222 }
223
224 static const AVFilterPad inputs[] = {
225 {
226 .name = "default",
227 .type = AVMEDIA_TYPE_VIDEO,
228 .filter_frame = filter_frame,
229 .config_props = config_input,
230 },
231 };
232
233 const AVFilter ff_vf_limiter = {
234 .name = "limiter",
235 .description = NULL_IF_CONFIG_SMALL("Limit pixels components to the specified range."),
236 .priv_size = sizeof(LimiterContext),
237 .priv_class = &limiter_class,
238 .init = init,
239 FILTER_INPUTS(inputs),
240 FILTER_OUTPUTS(ff_video_default_filterpad),
241 FILTER_PIXFMTS_ARRAY(pix_fmts),
242 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
243 .process_command = process_command,
244 };
245