FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_il.c
Date: 2022-11-26 13:19:19
Exec Total Coverage
Lines: 42 55 76.4%
Branches: 9 18 50.0%

Line Branch Exec Source
1 /*
2 * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
3 * Copyright (c) 2013 Paul B Mahol
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 * (de)interleave fields filter
25 */
26
27 #include "libavutil/opt.h"
28 #include "libavutil/imgutils.h"
29 #include "libavutil/pixdesc.h"
30 #include "avfilter.h"
31 #include "internal.h"
32
33 enum FilterMode {
34 MODE_NONE,
35 MODE_INTERLEAVE,
36 MODE_DEINTERLEAVE
37 };
38
39 typedef struct IlContext {
40 const AVClass *class;
41 int luma_mode, chroma_mode, alpha_mode; ///<FilterMode
42 int luma_swap, chroma_swap, alpha_swap;
43 int nb_planes;
44 int linesize[4], chroma_height;
45 int has_alpha;
46 } IlContext;
47
48 #define OFFSET(x) offsetof(IlContext, x)
49 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
50
51 static const AVOption il_options[] = {
52 {"luma_mode", "select luma mode", OFFSET(luma_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "luma_mode"},
53 {"l", "select luma mode", OFFSET(luma_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "luma_mode"},
54 {"none", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_NONE}, 0, 0, FLAGS, "luma_mode"},
55 {"interleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "luma_mode"},
56 {"i", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "luma_mode"},
57 {"deinterleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "luma_mode"},
58 {"d", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "luma_mode"},
59 {"chroma_mode", "select chroma mode", OFFSET(chroma_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "chroma_mode"},
60 {"c", "select chroma mode", OFFSET(chroma_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "chroma_mode"},
61 {"none", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_NONE}, 0, 0, FLAGS, "chroma_mode"},
62 {"interleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "chroma_mode"},
63 {"i", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "chroma_mode"},
64 {"deinterleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "chroma_mode"},
65 {"d", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "chroma_mode"},
66 {"alpha_mode", "select alpha mode", OFFSET(alpha_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "alpha_mode"},
67 {"a", "select alpha mode", OFFSET(alpha_mode), AV_OPT_TYPE_INT, {.i64=MODE_NONE}, MODE_NONE, MODE_DEINTERLEAVE, FLAGS, "alpha_mode"},
68 {"none", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_NONE}, 0, 0, FLAGS, "alpha_mode"},
69 {"interleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "alpha_mode"},
70 {"i", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_INTERLEAVE}, 0, 0, FLAGS, "alpha_mode"},
71 {"deinterleave", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "alpha_mode"},
72 {"d", NULL, 0, AV_OPT_TYPE_CONST, {.i64=MODE_DEINTERLEAVE}, 0, 0, FLAGS, "alpha_mode"},
73 {"luma_swap", "swap luma fields", OFFSET(luma_swap), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
74 {"ls", "swap luma fields", OFFSET(luma_swap), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
75 {"chroma_swap", "swap chroma fields", OFFSET(chroma_swap), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
76 {"cs", "swap chroma fields", OFFSET(chroma_swap), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
77 {"alpha_swap", "swap alpha fields", OFFSET(alpha_swap), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
78 {"as", "swap alpha fields", OFFSET(alpha_swap), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
79 {NULL}
80 };
81
82 AVFILTER_DEFINE_CLASS(il);
83
84 178 static int query_formats(AVFilterContext *ctx)
85 {
86 178 int reject_flags = AV_PIX_FMT_FLAG_PAL | AV_PIX_FMT_FLAG_HWACCEL;
87
88 178 return ff_set_common_formats(ctx, ff_formats_pixdesc_filter(0, reject_flags));
89 }
90
91 177 static int config_input(AVFilterLink *inlink)
92 {
93 177 IlContext *s = inlink->dst->priv;
94 177 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
95 int ret;
96
97 177 s->nb_planes = av_pix_fmt_count_planes(inlink->format);
98
99 177 s->has_alpha = !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA);
100
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177 if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
101 return ret;
102
103 177 s->chroma_height = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
104
105 177 return 0;
106 }
107
108 427 static void interleave(uint8_t *dst, uint8_t *src, int w, int h,
109 int dst_linesize, int src_linesize,
110 enum FilterMode mode, int swap)
111 {
112 427 const int a = swap;
113 427 const int b = 1 - a;
114 427 const int m = h >> 1;
115 int y;
116
117
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427 switch (mode) {
118 427 case MODE_DEINTERLEAVE:
119
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57523 for (y = 0; y < m; y++) {
120 57096 memcpy(dst + dst_linesize * y , src + src_linesize * (y * 2 + a), w);
121 57096 memcpy(dst + dst_linesize * (y + m), src + src_linesize * (y * 2 + b), w);
122 }
123 427 break;
124 case MODE_NONE:
125 for (y = 0; y < m; y++) {
126 memcpy(dst + dst_linesize * y * 2 , src + src_linesize * (y * 2 + a), w);
127 memcpy(dst + dst_linesize * (y * 2 + 1), src + src_linesize * (y * 2 + b), w);
128 }
129 break;
130 case MODE_INTERLEAVE:
131 for (y = 0; y < m; y++) {
132 memcpy(dst + dst_linesize * (y * 2 + a), src + src_linesize * y , w);
133 memcpy(dst + dst_linesize * (y * 2 + b), src + src_linesize * (y + m), w);
134 }
135 break;
136 }
137 427 }
138
139 177 static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
140 {
141 177 IlContext *s = inlink->dst->priv;
142 177 AVFilterLink *outlink = inlink->dst->outputs[0];
143 AVFrame *out;
144 int comp;
145
146 177 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
147
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177 if (!out) {
148 av_frame_free(&inpicref);
149 return AVERROR(ENOMEM);
150 }
151 177 av_frame_copy_props(out, inpicref);
152
153 177 interleave(out->data[0], inpicref->data[0],
154 s->linesize[0], inlink->h,
155 177 out->linesize[0], inpicref->linesize[0],
156 177 s->luma_mode, s->luma_swap);
157
158
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380 for (comp = 1; comp < (s->nb_planes - s->has_alpha); comp++) {
159 203 interleave(out->data[comp], inpicref->data[comp],
160 s->linesize[comp], s->chroma_height,
161 203 out->linesize[comp], inpicref->linesize[comp],
162 203 s->chroma_mode, s->chroma_swap);
163 }
164
165
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177 if (s->has_alpha) {
166 47 comp = s->nb_planes - 1;
167 47 interleave(out->data[comp], inpicref->data[comp],
168 s->linesize[comp], inlink->h,
169 47 out->linesize[comp], inpicref->linesize[comp],
170 47 s->alpha_mode, s->alpha_swap);
171 }
172
173 177 av_frame_free(&inpicref);
174 177 return ff_filter_frame(outlink, out);
175 }
176
177 static const AVFilterPad inputs[] = {
178 {
179 .name = "default",
180 .type = AVMEDIA_TYPE_VIDEO,
181 .filter_frame = filter_frame,
182 .config_props = config_input,
183 },
184 };
185
186 static const AVFilterPad outputs[] = {
187 {
188 .name = "default",
189 .type = AVMEDIA_TYPE_VIDEO,
190 },
191 };
192
193 const AVFilter ff_vf_il = {
194 .name = "il",
195 .description = NULL_IF_CONFIG_SMALL("Deinterleave or interleave fields."),
196 .priv_size = sizeof(IlContext),
197 FILTER_INPUTS(inputs),
198 FILTER_OUTPUTS(outputs),
199 FILTER_QUERY_FUNC(query_formats),
200 .priv_class = &il_class,
201 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
202 .process_command = ff_filter_process_command,
203 };
204