GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavfilter/graphdump.c Lines: 0 96 0.0 %
Date: 2020-10-23 17:01:47 Branches: 0 31 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/pixdesc.h"
27
#include "avfilter.h"
28
#include "internal.h"
29
30
static int print_link_prop(AVBPrint *buf, AVFilterLink *link)
31
{
32
    char *format;
33
    char layout[64];
34
    AVBPrint dummy_buffer = { 0 };
35
36
    if (!buf)
37
        buf = &dummy_buffer;
38
    switch (link->type) {
39
        case AVMEDIA_TYPE_VIDEO:
40
            format = av_x_if_null(av_get_pix_fmt_name(link->format), "?");
41
            av_bprintf(buf, "[%dx%d %d:%d %s]", link->w, link->h,
42
                    link->sample_aspect_ratio.num,
43
                    link->sample_aspect_ratio.den,
44
                    format);
45
            break;
46
47
        case AVMEDIA_TYPE_AUDIO:
48
            av_get_channel_layout_string(layout, sizeof(layout),
49
                                         link->channels, link->channel_layout);
50
            format = av_x_if_null(av_get_sample_fmt_name(link->format), "?");
51
            av_bprintf(buf, "[%dHz %s:%s]",
52
                       (int)link->sample_rate, format, layout);
53
            break;
54
55
        default:
56
            av_bprintf(buf, "?");
57
            break;
58
    }
59
    return buf->len;
60
}
61
62
static void avfilter_graph_dump_to_buf(AVBPrint *buf, AVFilterGraph *graph)
63
{
64
    unsigned i, j, x, e;
65
66
    for (i = 0; i < graph->nb_filters; i++) {
67
        AVFilterContext *filter = graph->filters[i];
68
        unsigned max_src_name = 0, max_dst_name = 0;
69
        unsigned max_in_name  = 0, max_out_name = 0;
70
        unsigned max_in_fmt   = 0, max_out_fmt  = 0;
71
        unsigned width, height, in_indent;
72
        unsigned lname = strlen(filter->name);
73
        unsigned ltype = strlen(filter->filter->name);
74
75
        for (j = 0; j < filter->nb_inputs; j++) {
76
            AVFilterLink *l = filter->inputs[j];
77
            unsigned ln = strlen(l->src->name) + 1 + strlen(l->srcpad->name);
78
            max_src_name = FFMAX(max_src_name, ln);
79
            max_in_name = FFMAX(max_in_name, strlen(l->dstpad->name));
80
            max_in_fmt = FFMAX(max_in_fmt, print_link_prop(NULL, l));
81
        }
82
        for (j = 0; j < filter->nb_outputs; j++) {
83
            AVFilterLink *l = filter->outputs[j];
84
            unsigned ln = strlen(l->dst->name) + 1 + strlen(l->dstpad->name);
85
            max_dst_name = FFMAX(max_dst_name, ln);
86
            max_out_name = FFMAX(max_out_name, strlen(l->srcpad->name));
87
            max_out_fmt = FFMAX(max_out_fmt, print_link_prop(NULL, l));
88
        }
89
        in_indent = max_src_name + max_in_name + max_in_fmt;
90
        in_indent += in_indent ? 4 : 0;
91
        width = FFMAX(lname + 2, ltype + 4);
92
        height = FFMAX3(2, filter->nb_inputs, filter->nb_outputs);
93
        av_bprint_chars(buf, ' ', in_indent);
94
        av_bprintf(buf, "+");
95
        av_bprint_chars(buf, '-', width);
96
        av_bprintf(buf, "+\n");
97
        for (j = 0; j < height; j++) {
98
            unsigned in_no  = j - (height - filter->nb_inputs ) / 2;
99
            unsigned out_no = j - (height - filter->nb_outputs) / 2;
100
101
            /* Input link */
102
            if (in_no < filter->nb_inputs) {
103
                AVFilterLink *l = filter->inputs[in_no];
104
                e = buf->len + max_src_name + 2;
105
                av_bprintf(buf, "%s:%s", l->src->name, l->srcpad->name);
106
                av_bprint_chars(buf, '-', e - buf->len);
107
                e = buf->len + max_in_fmt + 2 +
108
                    max_in_name - strlen(l->dstpad->name);
109
                print_link_prop(buf, l);
110
                av_bprint_chars(buf, '-', e - buf->len);
111
                av_bprintf(buf, "%s", l->dstpad->name);
112
            } else {
113
                av_bprint_chars(buf, ' ', in_indent);
114
            }
115
116
            /* Filter */
117
            av_bprintf(buf, "|");
118
            if (j == (height - 2) / 2) {
119
                x = (width - lname) / 2;
120
                av_bprintf(buf, "%*s%-*s", x, "", width - x, filter->name);
121
            } else if (j == (height - 2) / 2 + 1) {
122
                x = (width - ltype - 2) / 2;
123
                av_bprintf(buf, "%*s(%s)%*s", x, "", filter->filter->name,
124
                        width - ltype - 2 - x, "");
125
            } else {
126
                av_bprint_chars(buf, ' ', width);
127
            }
128
            av_bprintf(buf, "|");
129
130
            /* Output link */
131
            if (out_no < filter->nb_outputs) {
132
                AVFilterLink *l = filter->outputs[out_no];
133
                unsigned ln = strlen(l->dst->name) + 1 +
134
                              strlen(l->dstpad->name);
135
                e = buf->len + max_out_name + 2;
136
                av_bprintf(buf, "%s", l->srcpad->name);
137
                av_bprint_chars(buf, '-', e - buf->len);
138
                e = buf->len + max_out_fmt + 2 +
139
                    max_dst_name - ln;
140
                print_link_prop(buf, l);
141
                av_bprint_chars(buf, '-', e - buf->len);
142
                av_bprintf(buf, "%s:%s", l->dst->name, l->dstpad->name);
143
            }
144
            av_bprintf(buf, "\n");
145
        }
146
        av_bprint_chars(buf, ' ', in_indent);
147
        av_bprintf(buf, "+");
148
        av_bprint_chars(buf, '-', width);
149
        av_bprintf(buf, "+\n");
150
        av_bprintf(buf, "\n");
151
    }
152
}
153
154
char *avfilter_graph_dump(AVFilterGraph *graph, const char *options)
155
{
156
    AVBPrint buf;
157
    char *dump = NULL;
158
159
    av_bprint_init(&buf, 0, AV_BPRINT_SIZE_COUNT_ONLY);
160
    avfilter_graph_dump_to_buf(&buf, graph);
161
    av_bprint_init(&buf, buf.len + 1, buf.len + 1);
162
    avfilter_graph_dump_to_buf(&buf, graph);
163
    av_bprint_finalize(&buf, &dump);
164
    return dump;
165
}