| /* |
| * Filter graphs to bad ASCII-art |
| * Copyright (c) 2012 Nicolas George |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <string.h> |
| |
| #include "libavutil/channel_layout.h" |
| #include "libavutil/bprint.h" |
| #include "libavutil/pixdesc.h" |
| #include "avfilter.h" |
| #include "avfiltergraph.h" |
| #include "internal.h" |
| |
| static int print_link_prop(AVBPrint *buf, AVFilterLink *link) |
| { |
| char *format; |
| char layout[64]; |
| AVBPrint dummy_buffer = { 0 }; |
| |
| if (!buf) |
| buf = &dummy_buffer; |
| switch (link->type) { |
| case AVMEDIA_TYPE_VIDEO: |
| format = av_x_if_null(av_get_pix_fmt_name(link->format), "?"); |
| av_bprintf(buf, "[%dx%d %d:%d %s]", link->w, link->h, |
| link->sample_aspect_ratio.num, |
| link->sample_aspect_ratio.den, |
| format); |
| break; |
| |
| case AVMEDIA_TYPE_AUDIO: |
| av_get_channel_layout_string(layout, sizeof(layout), |
| link->channels, link->channel_layout); |
| format = av_x_if_null(av_get_sample_fmt_name(link->format), "?"); |
| av_bprintf(buf, "[%dHz %s:%s]", |
| (int)link->sample_rate, format, layout); |
| break; |
| |
| default: |
| av_bprintf(buf, "?"); |
| break; |
| } |
| return buf->len; |
| } |
| |
| static void avfilter_graph_dump_to_buf(AVBPrint *buf, AVFilterGraph *graph) |
| { |
| unsigned i, j, x, e; |
| |
| for (i = 0; i < graph->nb_filters; i++) { |
| AVFilterContext *filter = graph->filters[i]; |
| unsigned max_src_name = 0, max_dst_name = 0; |
| unsigned max_in_name = 0, max_out_name = 0; |
| unsigned max_in_fmt = 0, max_out_fmt = 0; |
| unsigned width, height, in_indent; |
| unsigned lname = strlen(filter->name); |
| unsigned ltype = strlen(filter->filter->name); |
| |
| for (j = 0; j < filter->nb_inputs; j++) { |
| AVFilterLink *l = filter->inputs[j]; |
| unsigned ln = strlen(l->src->name) + 1 + strlen(l->srcpad->name); |
| max_src_name = FFMAX(max_src_name, ln); |
| max_in_name = FFMAX(max_in_name, strlen(l->dstpad->name)); |
| max_in_fmt = FFMAX(max_in_fmt, print_link_prop(NULL, l)); |
| } |
| for (j = 0; j < filter->nb_outputs; j++) { |
| AVFilterLink *l = filter->outputs[j]; |
| unsigned ln = strlen(l->dst->name) + 1 + strlen(l->dstpad->name); |
| max_dst_name = FFMAX(max_dst_name, ln); |
| max_out_name = FFMAX(max_out_name, strlen(l->srcpad->name)); |
| max_out_fmt = FFMAX(max_out_fmt, print_link_prop(NULL, l)); |
| } |
| in_indent = max_src_name + max_in_name + max_in_fmt; |
| in_indent += in_indent ? 4 : 0; |
| width = FFMAX(lname + 2, ltype + 4); |
| height = FFMAX3(2, filter->nb_inputs, filter->nb_outputs); |
| av_bprint_chars(buf, ' ', in_indent); |
| av_bprintf(buf, "+"); |
| av_bprint_chars(buf, '-', width); |
| av_bprintf(buf, "+\n"); |
| for (j = 0; j < height; j++) { |
| unsigned in_no = j - (height - filter->nb_inputs ) / 2; |
| unsigned out_no = j - (height - filter->nb_outputs) / 2; |
| |
| /* Input link */ |
| if (in_no < filter->nb_inputs) { |
| AVFilterLink *l = filter->inputs[in_no]; |
| e = buf->len + max_src_name + 2; |
| av_bprintf(buf, "%s:%s", l->src->name, l->srcpad->name); |
| av_bprint_chars(buf, '-', e - buf->len); |
| e = buf->len + max_in_fmt + 2 + |
| max_in_name - strlen(l->dstpad->name); |
| print_link_prop(buf, l); |
| av_bprint_chars(buf, '-', e - buf->len); |
| av_bprintf(buf, "%s", l->dstpad->name); |
| } else { |
| av_bprint_chars(buf, ' ', in_indent); |
| } |
| |
| /* Filter */ |
| av_bprintf(buf, "|"); |
| if (j == (height - 2) / 2) { |
| x = (width - lname) / 2; |
| av_bprintf(buf, "%*s%-*s", x, "", width - x, filter->name); |
| } else if (j == (height - 2) / 2 + 1) { |
| x = (width - ltype - 2) / 2; |
| av_bprintf(buf, "%*s(%s)%*s", x, "", filter->filter->name, |
| width - ltype - 2 - x, ""); |
| } else { |
| av_bprint_chars(buf, ' ', width); |
| } |
| av_bprintf(buf, "|"); |
| |
| /* Output link */ |
| if (out_no < filter->nb_outputs) { |
| AVFilterLink *l = filter->outputs[out_no]; |
| unsigned ln = strlen(l->dst->name) + 1 + |
| strlen(l->dstpad->name); |
| e = buf->len + max_out_name + 2; |
| av_bprintf(buf, "%s", l->srcpad->name); |
| av_bprint_chars(buf, '-', e - buf->len); |
| e = buf->len + max_out_fmt + 2 + |
| max_dst_name - ln; |
| print_link_prop(buf, l); |
| av_bprint_chars(buf, '-', e - buf->len); |
| av_bprintf(buf, "%s:%s", l->dst->name, l->dstpad->name); |
| } |
| av_bprintf(buf, "\n"); |
| } |
| av_bprint_chars(buf, ' ', in_indent); |
| av_bprintf(buf, "+"); |
| av_bprint_chars(buf, '-', width); |
| av_bprintf(buf, "+\n"); |
| av_bprintf(buf, "\n"); |
| } |
| } |
| |
| char *avfilter_graph_dump(AVFilterGraph *graph, const char *options) |
| { |
| AVBPrint buf; |
| char *dump; |
| |
| av_bprint_init(&buf, 0, 0); |
| avfilter_graph_dump_to_buf(&buf, graph); |
| av_bprint_init(&buf, buf.len + 1, buf.len + 1); |
| avfilter_graph_dump_to_buf(&buf, graph); |
| av_bprint_finalize(&buf, &dump); |
| return dump; |
| } |