FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_hflip.c
Date: 2024-04-19 07:31:02
Exec Total Coverage
Lines: 53 56 94.6%
Functions: 4 4 100.0%
Branches: 24 28 85.7%

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1 /*
2 * Copyright (c) 2007 Benoit Fouet
3 * Copyright (c) 2010 Stefano Sabatini
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * horizontal flip filter
25 */
26
27 #include <string.h>
28
29 #include "avfilter.h"
30 #include "formats.h"
31 #include "hflip.h"
32 #include "internal.h"
33 #include "vf_hflip_init.h"
34 #include "video.h"
35 #include "libavutil/pixdesc.h"
36 #include "libavutil/internal.h"
37 #include "libavutil/intreadwrite.h"
38 #include "libavutil/imgutils.h"
39
40 178 static int query_formats(AVFilterContext *ctx)
41 {
42 178 AVFilterFormats *pix_fmts = NULL;
43 const AVPixFmtDescriptor *desc;
44 int fmt, ret;
45
46
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40762 for (fmt = 0; desc = av_pix_fmt_desc_get(fmt); fmt++) {
47
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40584 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL ||
48
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38092 desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ||
49
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37202 (desc->log2_chroma_w != desc->log2_chroma_h &&
50
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43966 desc->comp[0].plane == desc->comp[1].plane)) &&
51 35778 (ret = ff_add_format(&pix_fmts, fmt)) < 0)
52 return ret;
53 }
54
55 178 return ff_set_common_formats(ctx, pix_fmts);
56 }
57
58 177 static int config_props(AVFilterLink *inlink)
59 {
60 177 FlipContext *s = inlink->dst->priv;
61 177 const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
62 177 const int hsub = pix_desc->log2_chroma_w;
63 177 const int vsub = pix_desc->log2_chroma_h;
64 int nb_planes;
65
66 177 av_image_fill_max_pixsteps(s->max_step, NULL, pix_desc);
67 177 s->planewidth[0] = s->planewidth[3] = inlink->w;
68 177 s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, hsub);
69 177 s->planeheight[0] = s->planeheight[3] = inlink->h;
70 177 s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
71
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177 s->bayer_plus1 = !!(pix_desc->flags & AV_PIX_FMT_FLAG_BAYER) + 1;
72
73 177 nb_planes = av_pix_fmt_count_planes(inlink->format);
74
75 177 return ff_hflip_init(s, s->max_step, nb_planes);
76 }
77
78 typedef struct ThreadData {
79 AVFrame *in, *out;
80 } ThreadData;
81
82 177 static int filter_slice(AVFilterContext *ctx, void *arg, int job, int nb_jobs)
83 {
84 177 FlipContext *s = ctx->priv;
85 177 ThreadData *td = arg;
86 177 AVFrame *in = td->in;
87 177 AVFrame *out = td->out;
88 uint8_t *inrow, *outrow;
89 int i, plane, step;
90
91
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601 for (plane = 0; plane < 4 && in->data[plane] && in->linesize[plane]; plane++) {
92 424 const int width = s->planewidth[plane] / s->bayer_plus1;
93 424 const int height = s->planeheight[plane];
94 424 const int start = (height * job ) / nb_jobs;
95 424 const int end = (height * (job+1)) / nb_jobs;
96
97 424 step = s->max_step[plane];
98
99 424 outrow = out->data[plane] + start * out->linesize[plane];
100 424 inrow = in ->data[plane] + start * in->linesize[plane] + (width - 1) * step;
101
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113752 for (i = start; i < end; i++) {
102 113328 s->flip_line[plane](inrow, outrow, width);
103
104 113328 inrow += in ->linesize[plane];
105 113328 outrow += out->linesize[plane];
106 }
107 }
108
109 177 return 0;
110 }
111
112 177 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
113 {
114 177 AVFilterContext *ctx = inlink->dst;
115 177 AVFilterLink *outlink = ctx->outputs[0];
116 ThreadData td;
117 AVFrame *out;
118
119 177 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
120
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177 if (!out) {
121 av_frame_free(&in);
122 return AVERROR(ENOMEM);
123 }
124 177 av_frame_copy_props(out, in);
125
126 /* copy palette if required */
127
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177 if (av_pix_fmt_desc_get(inlink->format)->flags & AV_PIX_FMT_FLAG_PAL)
128 1 memcpy(out->data[1], in->data[1], AVPALETTE_SIZE);
129
130 177 td.in = in, td.out = out;
131 177 ff_filter_execute(ctx, filter_slice, &td, NULL,
132
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177 FFMIN(outlink->h, ff_filter_get_nb_threads(ctx)));
133
134 177 av_frame_free(&in);
135 177 return ff_filter_frame(outlink, out);
136 }
137
138 static const AVFilterPad avfilter_vf_hflip_inputs[] = {
139 {
140 .name = "default",
141 .type = AVMEDIA_TYPE_VIDEO,
142 .filter_frame = filter_frame,
143 .config_props = config_props,
144 },
145 };
146
147 const AVFilter ff_vf_hflip = {
148 .name = "hflip",
149 .description = NULL_IF_CONFIG_SMALL("Horizontally flip the input video."),
150 .priv_size = sizeof(FlipContext),
151 FILTER_INPUTS(avfilter_vf_hflip_inputs),
152 FILTER_OUTPUTS(ff_video_default_filterpad),
153 FILTER_QUERY_FUNC(query_formats),
154 .flags = AVFILTER_FLAG_SLICE_THREADS | AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
155 };
156