| /* |
| * 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/pixdesc.h" |
| #include "avfilter.h" |
| #include "avfiltergraph.h" |
| |
| #define BPRINTF(...) \ |
| cur += snprintf(cur, buf_end - FFMIN(cur, buf_end), __VA_ARGS__) |
| |
| #define BPAD(c, l) \ |
| do { \ |
| if (cur < buf_end) memset(cur, c, FFMIN(l, buf_end - cur)); cur += l; \ |
| } while (0) |
| |
| static int snprint_link_prop(char *buf, char *buf_end, AVFilterLink *link) |
| { |
| char *cur = buf, *format; |
| char layout[64]; |
| |
| switch (link->type) { |
| case AVMEDIA_TYPE_VIDEO: |
| format = av_x_if_null(av_get_pix_fmt_name(link->format), "?"); |
| BPRINTF("[%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), |
| -1, link->channel_layout); |
| format = av_x_if_null(av_get_sample_fmt_name(link->format), "?"); |
| BPRINTF("[%dHz %s:%s:%s]", |
| (int)link->sample_rate, format, layout, |
| link->planar ? "planar" : "packed"); |
| break; |
| |
| default: |
| BPRINTF("?"); |
| break; |
| } |
| return cur - buf; |
| } |
| |
| static size_t avfilter_graph_dump_to_buf(AVFilterGraph *graph, |
| char *buf, char *buf_end) |
| { |
| char *cur = buf, *e; |
| unsigned i, j, x; |
| |
| for (i = 0; i < graph->filter_count; 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->input_count; 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, snprint_link_prop(NULL, NULL, l)); |
| } |
| for (j = 0; j < filter->output_count; 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, snprint_link_prop(NULL, 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->input_count, filter->output_count); |
| BPAD(' ', in_indent); |
| BPRINTF("+"); |
| BPAD('-', width); |
| BPRINTF("+\n"); |
| for (j = 0; j < height; j++) { |
| unsigned in_no = j - (height - filter->input_count ) / 2; |
| unsigned out_no = j - (height - filter->output_count) / 2; |
| |
| /* Input link */ |
| if (in_no < filter->input_count) { |
| AVFilterLink *l = filter->inputs[in_no]; |
| e = cur + max_src_name + 2; |
| BPRINTF("%s:%s", l->src->name, l->srcpad->name); |
| BPAD('-', e - cur); |
| e = cur + max_in_fmt + 2 + |
| max_in_name - strlen(l->dstpad->name); |
| cur += snprint_link_prop(cur, buf_end, l); |
| BPAD('-', e - cur); |
| BPRINTF("%s", l->dstpad->name); |
| } else { |
| BPAD(' ', in_indent); |
| } |
| |
| /* Filter */ |
| BPRINTF("|"); |
| if (j == (height - 2) / 2) { |
| x = (width - lname) / 2; |
| BPRINTF("%*s%-*s", x, "", width - x, filter->name); |
| } else if (j == (height - 2) / 2 + 1) { |
| x = (width - ltype - 2) / 2; |
| BPRINTF("%*s(%s)%*s", x, "", filter->filter->name, |
| width - ltype - 2 - x, ""); |
| } else { |
| BPAD(' ', width); |
| } |
| BPRINTF("|"); |
| |
| /* Output link */ |
| if (out_no < filter->output_count) { |
| AVFilterLink *l = filter->outputs[out_no]; |
| unsigned ln = strlen(l->dst->name) + 1 + |
| strlen(l->dstpad->name); |
| e = cur + max_out_name + 2; |
| BPRINTF("%s", l->srcpad->name); |
| BPAD('-', e - cur); |
| e = cur + max_out_fmt + 2 + |
| max_dst_name - ln; |
| cur += snprint_link_prop(cur, buf_end, l); |
| BPAD('-', e - cur); |
| BPRINTF("%s:%s", l->dst->name, l->dstpad->name); |
| } |
| BPRINTF("\n"); |
| } |
| BPAD(' ', in_indent); |
| BPRINTF("+"); |
| BPAD('-', width); |
| BPRINTF("+\n"); |
| BPRINTF("\n"); |
| } |
| if (cur < buf_end) |
| *(cur++) = 0; |
| return cur - buf; |
| } |
| |
| char *avfilter_graph_dump(AVFilterGraph *graph, const char *options) |
| { |
| size_t buf_size = avfilter_graph_dump_to_buf(graph, NULL, NULL); |
| char *buf = av_malloc(buf_size); |
| if (!buf) |
| return NULL; |
| avfilter_graph_dump_to_buf(graph, buf, buf + buf_size); |
| return buf; |
| } |