FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/graphdump.c
Date: 2024-07-24 19:24:46
Exec Total Coverage
Lines: 0 100 0.0%
Functions: 0 3 0.0%
Branches: 0 33 0.0%

Line Branch Exec Source
1 /*
2 * Filter graphs to bad ASCII-art
3 * Copyright (c) 2012 Nicolas George
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 #include <string.h>
23
24 #include "libavutil/channel_layout.h"
25 #include "libavutil/bprint.h"
26 #include "libavutil/mem.h"
27 #include "libavutil/pixdesc.h"
28 #include "avfilter.h"
29 #include "internal.h"
30
31 static int print_link_prop(AVBPrint *buf, AVFilterLink *link)
32 {
33 const char *format;
34 AVBPrint dummy_buffer;
35
36 if (!buf) {
37 buf = &dummy_buffer;
38 av_bprint_init(buf, 0, AV_BPRINT_SIZE_COUNT_ONLY);
39 }
40 switch (link->type) {
41 case AVMEDIA_TYPE_VIDEO:
42 format = av_x_if_null(av_get_pix_fmt_name(link->format), "?");
43 av_bprintf(buf, "[%dx%d %d:%d %s]", link->w, link->h,
44 link->sample_aspect_ratio.num,
45 link->sample_aspect_ratio.den,
46 format);
47 break;
48
49 case AVMEDIA_TYPE_AUDIO:
50 format = av_x_if_null(av_get_sample_fmt_name(link->format), "?");
51 av_bprintf(buf, "[%dHz %s:",
52 (int)link->sample_rate, format);
53 av_channel_layout_describe_bprint(&link->ch_layout, buf);
54 av_bprint_chars(buf, ']', 1);
55 break;
56
57 default:
58 av_bprintf(buf, "?");
59 break;
60 }
61 return buf->len;
62 }
63
64 static void avfilter_graph_dump_to_buf(AVBPrint *buf, AVFilterGraph *graph)
65 {
66 unsigned i, j, x, e;
67
68 for (i = 0; i < graph->nb_filters; i++) {
69 AVFilterContext *filter = graph->filters[i];
70 unsigned max_src_name = 0, max_dst_name = 0;
71 unsigned max_in_name = 0, max_out_name = 0;
72 unsigned max_in_fmt = 0, max_out_fmt = 0;
73 unsigned width, height, in_indent;
74 unsigned lname = strlen(filter->name);
75 unsigned ltype = strlen(filter->filter->name);
76
77 for (j = 0; j < filter->nb_inputs; j++) {
78 AVFilterLink *l = filter->inputs[j];
79 unsigned ln = strlen(l->src->name) + 1 + strlen(l->srcpad->name);
80 max_src_name = FFMAX(max_src_name, ln);
81 max_in_name = FFMAX(max_in_name, strlen(l->dstpad->name));
82 max_in_fmt = FFMAX(max_in_fmt, print_link_prop(NULL, l));
83 }
84 for (j = 0; j < filter->nb_outputs; j++) {
85 AVFilterLink *l = filter->outputs[j];
86 unsigned ln = strlen(l->dst->name) + 1 + strlen(l->dstpad->name);
87 max_dst_name = FFMAX(max_dst_name, ln);
88 max_out_name = FFMAX(max_out_name, strlen(l->srcpad->name));
89 max_out_fmt = FFMAX(max_out_fmt, print_link_prop(NULL, l));
90 }
91 in_indent = max_src_name + max_in_name + max_in_fmt;
92 in_indent += in_indent ? 4 : 0;
93 width = FFMAX(lname + 2, ltype + 4);
94 height = FFMAX3(2, filter->nb_inputs, filter->nb_outputs);
95 av_bprint_chars(buf, ' ', in_indent);
96 av_bprintf(buf, "+");
97 av_bprint_chars(buf, '-', width);
98 av_bprintf(buf, "+\n");
99 for (j = 0; j < height; j++) {
100 unsigned in_no = j - (height - filter->nb_inputs ) / 2;
101 unsigned out_no = j - (height - filter->nb_outputs) / 2;
102
103 /* Input link */
104 if (in_no < filter->nb_inputs) {
105 AVFilterLink *l = filter->inputs[in_no];
106 e = buf->len + max_src_name + 2;
107 av_bprintf(buf, "%s:%s", l->src->name, l->srcpad->name);
108 av_bprint_chars(buf, '-', e - buf->len);
109 e = buf->len + max_in_fmt + 2 +
110 max_in_name - strlen(l->dstpad->name);
111 print_link_prop(buf, l);
112 av_bprint_chars(buf, '-', e - buf->len);
113 av_bprintf(buf, "%s", l->dstpad->name);
114 } else {
115 av_bprint_chars(buf, ' ', in_indent);
116 }
117
118 /* Filter */
119 av_bprintf(buf, "|");
120 if (j == (height - 2) / 2) {
121 x = (width - lname) / 2;
122 av_bprintf(buf, "%*s%-*s", x, "", width - x, filter->name);
123 } else if (j == (height - 2) / 2 + 1) {
124 x = (width - ltype - 2) / 2;
125 av_bprintf(buf, "%*s(%s)%*s", x, "", filter->filter->name,
126 width - ltype - 2 - x, "");
127 } else {
128 av_bprint_chars(buf, ' ', width);
129 }
130 av_bprintf(buf, "|");
131
132 /* Output link */
133 if (out_no < filter->nb_outputs) {
134 AVFilterLink *l = filter->outputs[out_no];
135 unsigned ln = strlen(l->dst->name) + 1 +
136 strlen(l->dstpad->name);
137 e = buf->len + max_out_name + 2;
138 av_bprintf(buf, "%s", l->srcpad->name);
139 av_bprint_chars(buf, '-', e - buf->len);
140 e = buf->len + max_out_fmt + 2 +
141 max_dst_name - ln;
142 print_link_prop(buf, l);
143 av_bprint_chars(buf, '-', e - buf->len);
144 av_bprintf(buf, "%s:%s", l->dst->name, l->dstpad->name);
145 }
146 av_bprintf(buf, "\n");
147 }
148 av_bprint_chars(buf, ' ', in_indent);
149 av_bprintf(buf, "+");
150 av_bprint_chars(buf, '-', width);
151 av_bprintf(buf, "+\n");
152 av_bprintf(buf, "\n");
153 }
154 }
155
156 char *avfilter_graph_dump(AVFilterGraph *graph, const char *options)
157 {
158 AVBPrint buf;
159 char *dump = NULL;
160
161 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_COUNT_ONLY);
162 avfilter_graph_dump_to_buf(&buf, graph);
163 dump = av_malloc(buf.len + 1);
164 if (!dump)
165 return NULL;
166 av_bprint_init_for_buffer(&buf, dump, buf.len + 1);
167 avfilter_graph_dump_to_buf(&buf, graph);
168 return dump;
169 }
170