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2ba45a60 DM |
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 "avfiltergraph.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; | |
158 | ||
159 | av_bprint_init(&buf, 0, 0); | |
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 | } |