FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/vf_swaprect.c
Date: 2025-10-27 03:13:05
Exec Total Coverage
Lines: 83 91 91.2%
Functions: 4 4 100.0%
Branches: 23 42 54.8%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2015 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/avassert.h"
22 #include "libavutil/eval.h"
23 #include "libavutil/imgutils.h"
24 #include "libavutil/mem.h"
25 #include "libavutil/opt.h"
26
27 #include "avfilter.h"
28 #include "filters.h"
29 #include "formats.h"
30 #include "video.h"
31
32 typedef struct SwapRectContext {
33 const AVClass *class;
34 char *w, *h;
35 char *x1, *y1;
36 char *x2, *y2;
37
38 int nb_planes;
39 int pixsteps[4];
40
41 const AVPixFmtDescriptor *desc;
42 uint8_t *temp;
43 } SwapRectContext;
44
45 #define OFFSET(x) offsetof(SwapRectContext, x)
46 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
47 static const AVOption swaprect_options[] = {
48 { "w", "set rect width", OFFSET(w), AV_OPT_TYPE_STRING, {.str="w/2"}, 0, 0, .flags = FLAGS },
49 { "h", "set rect height", OFFSET(h), AV_OPT_TYPE_STRING, {.str="h/2"}, 0, 0, .flags = FLAGS },
50 { "x1", "set 1st rect x top left coordinate", OFFSET(x1), AV_OPT_TYPE_STRING, {.str="w/2"}, 0, 0, .flags = FLAGS },
51 { "y1", "set 1st rect y top left coordinate", OFFSET(y1), AV_OPT_TYPE_STRING, {.str="h/2"}, 0, 0, .flags = FLAGS },
52 { "x2", "set 2nd rect x top left coordinate", OFFSET(x2), AV_OPT_TYPE_STRING, {.str="0"}, 0, 0, .flags = FLAGS },
53 { "y2", "set 2nd rect y top left coordinate", OFFSET(y2), AV_OPT_TYPE_STRING, {.str="0"}, 0, 0, .flags = FLAGS },
54 { NULL },
55 };
56
57 AVFILTER_DEFINE_CLASS(swaprect);
58
59 1 static int query_formats(const AVFilterContext *ctx,
60 AVFilterFormatsConfig **cfg_in,
61 AVFilterFormatsConfig **cfg_out)
62 {
63 1 int reject_flags = AV_PIX_FMT_FLAG_PAL |
64 AV_PIX_FMT_FLAG_HWACCEL |
65 AV_PIX_FMT_FLAG_BITSTREAM;
66
67 1 return ff_set_common_formats2(ctx, cfg_in, cfg_out,
68 ff_formats_pixdesc_filter(0, reject_flags));
69 }
70
71 static const char *const var_names[] = { "w", "h", "a", "n", "t", "sar", "dar", NULL };
72 enum { VAR_W, VAR_H, VAR_A, VAR_N, VAR_T, VAR_SAR, VAR_DAR, VAR_VARS_NB };
73
74 50 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
75 {
76 50 FilterLink *inl = ff_filter_link(inlink);
77 50 AVFilterContext *ctx = inlink->dst;
78 50 AVFilterLink *outlink = ctx->outputs[0];
79 50 SwapRectContext *s = ctx->priv;
80 double var_values[VAR_VARS_NB];
81 int x1[4], y1[4];
82 int x2[4], y2[4];
83 int aw[4], ah[4];
84 int lw[4], lh[4];
85 int pw[4], ph[4];
86 double dw, dh;
87 double dx1, dy1;
88 double dx2, dy2;
89 int y, p, w, h, ret;
90
91 50 var_values[VAR_W] = inlink->w;
92 50 var_values[VAR_H] = inlink->h;
93 50 var_values[VAR_A] = (float) inlink->w / inlink->h;
94
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 50 var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ? av_q2d(inlink->sample_aspect_ratio) : 1;
95 50 var_values[VAR_DAR] = var_values[VAR_A] * var_values[VAR_SAR];
96 50 var_values[VAR_N] = inl->frame_count_out;
97
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 50 var_values[VAR_T] = in->pts == AV_NOPTS_VALUE ? NAN : in->pts * av_q2d(inlink->time_base);
98
99 50 ret = av_expr_parse_and_eval(&dw, s->w,
100 var_names, &var_values[0],
101 NULL, NULL, NULL, NULL,
102 0, 0, ctx);
103
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 50 if (ret < 0)
104 ✗ return ret;
105
106 50 ret = av_expr_parse_and_eval(&dh, s->h,
107 var_names, &var_values[0],
108 NULL, NULL, NULL, NULL,
109 0, 0, ctx);
110
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 50 if (ret < 0)
111 ✗ return ret;
112
113 50 ret = av_expr_parse_and_eval(&dx1, s->x1,
114 var_names, &var_values[0],
115 NULL, NULL, NULL, NULL,
116 0, 0, ctx);
117
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 50 if (ret < 0)
118 ✗ return ret;
119
120 50 ret = av_expr_parse_and_eval(&dy1, s->y1,
121 var_names, &var_values[0],
122 NULL, NULL, NULL, NULL,
123 0, 0, ctx);
124
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 50 if (ret < 0)
125 ✗ return ret;
126
127 50 ret = av_expr_parse_and_eval(&dx2, s->x2,
128 var_names, &var_values[0],
129 NULL, NULL, NULL, NULL,
130 0, 0, ctx);
131
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 50 if (ret < 0)
132 ✗ return ret;
133
134 50 ret = av_expr_parse_and_eval(&dy2, s->y2,
135 var_names, &var_values[0],
136 NULL, NULL, NULL, NULL,
137 0, 0, ctx);
138
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 50 if (ret < 0)
139 ✗ return ret;
140
141 50 w = dw; h = dh; x1[0] = dx1; y1[0] = dy1; x2[0] = dx2; y2[0] = dy2;
142
143 50 x1[0] = av_clip(x1[0], 0, inlink->w - 1);
144 50 y1[0] = av_clip(y1[0], 0, inlink->h - 1);
145
146 50 x2[0] = av_clip(x2[0], 0, inlink->w - 1);
147 50 y2[0] = av_clip(y2[0], 0, inlink->h - 1);
148
149 50 ah[1] = ah[2] = AV_CEIL_RSHIFT(h, s->desc->log2_chroma_h);
150 50 ah[0] = ah[3] = h;
151 50 aw[1] = aw[2] = AV_CEIL_RSHIFT(w, s->desc->log2_chroma_w);
152 50 aw[0] = aw[3] = w;
153
154 50 w = FFMIN3(w, inlink->w - x1[0], inlink->w - x2[0]);
155 50 h = FFMIN3(h, inlink->h - y1[0], inlink->h - y2[0]);
156
157 50 ph[1] = ph[2] = AV_CEIL_RSHIFT(h, s->desc->log2_chroma_h);
158 50 ph[0] = ph[3] = h;
159 50 pw[1] = pw[2] = AV_CEIL_RSHIFT(w, s->desc->log2_chroma_w);
160 50 pw[0] = pw[3] = w;
161
162 50 lh[1] = lh[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
163 50 lh[0] = lh[3] = inlink->h;
164 50 lw[1] = lw[2] = AV_CEIL_RSHIFT(inlink->w, s->desc->log2_chroma_w);
165 50 lw[0] = lw[3] = inlink->w;
166
167 50 x1[1] = x1[2] = (x1[0] >> s->desc->log2_chroma_w);
168 50 x1[0] = x1[3] = x1[0];
169 50 y1[1] = y1[2] = (y1[0] >> s->desc->log2_chroma_h);
170 50 y1[0] = y1[3] = y1[0];
171
172 50 x2[1] = x2[2] = (x2[0] >> s->desc->log2_chroma_w);
173 50 x2[0] = x2[3] = x2[0];
174 50 y2[1] = y2[2] = (y2[0] >> s->desc->log2_chroma_h);
175 50 y2[0] = y2[3] = y2[0];
176
177
178
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 50 av_assert0(FFMAX(x1[1], x2[1]) + pw[1] <= lw[1]);
179
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 50 av_assert0(FFMAX(y1[1], y2[1]) + ph[1] <= lh[1]);
180
181
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 200 for (p = 0; p < s->nb_planes; p++) {
182
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 150 if (ph[p] == ah[p] && pw[p] == aw[p]) {
183 150 uint8_t *src = in->data[p] + y1[p] * in->linesize[p] + x1[p] * s->pixsteps[p];
184 150 uint8_t *dst = in->data[p] + y2[p] * in->linesize[p] + x2[p] * s->pixsteps[p];
185
186
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 14550 for (y = 0; y < ph[p]; y++) {
187 14400 memcpy(s->temp, src, pw[p] * s->pixsteps[p]);
188 14400 memmove(src, dst, pw[p] * s->pixsteps[p]);
189 14400 memcpy(dst, s->temp, pw[p] * s->pixsteps[p]);
190 14400 src += in->linesize[p];
191 14400 dst += in->linesize[p];
192 }
193 }
194 }
195
196 50 return ff_filter_frame(outlink, in);
197 }
198
199 1 static int config_input(AVFilterLink *inlink)
200 {
201 1 AVFilterContext *ctx = inlink->dst;
202 1 SwapRectContext *s = ctx->priv;
203
204
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 1 if (!s->w || !s->h ||
205
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 1 !s->x1 || !s->y1 ||
206
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 1 !s->x2 || !s->y2)
207 ✗ return AVERROR(EINVAL);
208
209 1 s->desc = av_pix_fmt_desc_get(inlink->format);
210 1 av_image_fill_max_pixsteps(s->pixsteps, NULL, s->desc);
211 1 s->nb_planes = av_pix_fmt_count_planes(inlink->format);
212
213 1 s->temp = av_malloc_array(inlink->w, s->pixsteps[0]);
214
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 1 if (!s->temp)
215 ✗ return AVERROR(ENOMEM);
216
217 1 return 0;
218 }
219
220 2 static av_cold void uninit(AVFilterContext *ctx)
221 {
222 2 SwapRectContext *s = ctx->priv;
223 2 av_freep(&s->temp);
224 2 }
225
226 static const AVFilterPad inputs[] = {
227 {
228 .name = "default",
229 .type = AVMEDIA_TYPE_VIDEO,
230 .flags = AVFILTERPAD_FLAG_NEEDS_WRITABLE,
231 .filter_frame = filter_frame,
232 .config_props = config_input,
233 },
234 };
235
236 const FFFilter ff_vf_swaprect = {
237 .p.name = "swaprect",
238 .p.description = NULL_IF_CONFIG_SMALL("Swap 2 rectangular objects in video."),
239 .p.priv_class = &swaprect_class,
240 .p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
241 .priv_size = sizeof(SwapRectContext),
242 .uninit = uninit,
243 FILTER_INPUTS(inputs),
244 FILTER_OUTPUTS(ff_video_default_filterpad),
245 FILTER_QUERY_FUNC2(query_formats),
246 .process_command = ff_filter_process_command,
247 };
248