mirror of https://github.com/FFmpeg/FFmpeg.git
Nicolas George
13 years ago
parent
9bd44b42a8
commit
0c3577bfd9
5 changed files with 186 additions and 2 deletions
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/*
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* Filter graphs to bad ASCII-art |
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* Copyright (c) 2012 Nicolas George |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <string.h> |
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#include "libavutil/pixdesc.h" |
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#include "avfilter.h" |
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#include "avfiltergraph.h" |
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#define BPRINTF(...) \ |
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cur += snprintf(cur, buf_end - FFMIN(cur, buf_end), __VA_ARGS__) |
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#define BPAD(c, l) \ |
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do { \
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if (cur < buf_end) memset(cur, c, FFMIN(l, buf_end - cur)); cur += l; \
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} while (0) |
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static int snprint_link_prop(char *buf, char *buf_end, AVFilterLink *link) |
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{ |
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char *cur = buf, *format; |
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char layout[64]; |
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switch (link->type) { |
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case AVMEDIA_TYPE_VIDEO: |
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format = av_x_if_null(av_get_pix_fmt_name(link->format), "?"); |
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BPRINTF("[%dx%d %d:%d %s]", link->w, link->h, |
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link->sample_aspect_ratio.num, |
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link->sample_aspect_ratio.den, |
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format); |
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break; |
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case AVMEDIA_TYPE_AUDIO: |
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av_get_channel_layout_string(layout, sizeof(layout), |
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-1, link->channel_layout); |
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format = av_x_if_null(av_get_sample_fmt_name(link->format), "?"); |
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BPRINTF("[%dHz %s:%s:%s]", |
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(int)link->sample_rate, format, layout, |
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link->planar ? "planar" : "packed"); |
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break; |
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default: |
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BPRINTF("?"); |
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break; |
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} |
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return cur - buf; |
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} |
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static size_t avfilter_graph_dump_to_buf(AVFilterGraph *graph, |
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char *buf, char *buf_end) |
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{ |
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char *cur = buf, *e; |
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unsigned i, j, x; |
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for (i = 0; i < graph->filter_count; i++) { |
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AVFilterContext *filter = graph->filters[i]; |
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unsigned max_src_name = 0, max_dst_name = 0; |
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unsigned max_in_name = 0, max_out_name = 0; |
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unsigned max_in_fmt = 0, max_out_fmt = 0; |
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unsigned width, height, in_indent; |
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unsigned lname = strlen(filter->name); |
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unsigned ltype = strlen(filter->filter->name); |
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for (j = 0; j < filter->input_count; j++) { |
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AVFilterLink *l = filter->inputs[j]; |
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unsigned ln = strlen(l->src->name) + 1 + strlen(l->srcpad->name); |
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max_src_name = FFMAX(max_src_name, ln); |
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max_in_name = FFMAX(max_in_name, strlen(l->dstpad->name)); |
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max_in_fmt = FFMAX(max_in_fmt, snprint_link_prop(NULL, NULL, l)); |
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} |
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for (j = 0; j < filter->output_count; j++) { |
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AVFilterLink *l = filter->outputs[j]; |
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unsigned ln = strlen(l->dst->name) + 1 + strlen(l->dstpad->name); |
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max_dst_name = FFMAX(max_dst_name, ln); |
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max_out_name = FFMAX(max_out_name, strlen(l->srcpad->name)); |
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max_out_fmt = FFMAX(max_out_fmt, snprint_link_prop(NULL, NULL, l)); |
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} |
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in_indent = max_src_name + max_in_name + max_in_fmt; |
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in_indent += in_indent ? 4 : 0; |
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width = FFMAX(lname + 2, ltype + 4); |
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height = FFMAX3(2, filter->input_count, filter->output_count); |
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BPAD(' ', in_indent); |
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BPRINTF("+"); |
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BPAD('-', width); |
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BPRINTF("+\n"); |
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for (j = 0; j < height; j++) { |
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unsigned in_no = j - (height - filter->input_count ) / 2; |
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unsigned out_no = j - (height - filter->output_count) / 2; |
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/* Input link */ |
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if (in_no < filter->input_count) { |
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AVFilterLink *l = filter->inputs[in_no]; |
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e = cur + max_src_name + 2; |
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BPRINTF("%s:%s", l->src->name, l->srcpad->name); |
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BPAD('-', e - cur); |
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e = cur + max_in_fmt + 2 + |
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max_in_name - strlen(l->dstpad->name); |
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cur += snprint_link_prop(cur, buf_end, l); |
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BPAD('-', e - cur); |
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BPRINTF("%s", l->dstpad->name); |
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} else { |
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BPAD(' ', in_indent); |
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} |
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/* Filter */ |
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BPRINTF("|"); |
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if (j == (height - 2) / 2) { |
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x = (width - lname) / 2; |
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BPRINTF("%*s%-*s", x, "", width - x, filter->name); |
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} else if (j == (height - 2) / 2 + 1) { |
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x = (width - ltype - 2) / 2; |
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BPRINTF("%*s(%s)%*s", x, "", filter->filter->name, |
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width - ltype - 2 - x, ""); |
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} else { |
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BPAD(' ', width); |
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} |
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BPRINTF("|"); |
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/* Output link */ |
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if (out_no < filter->output_count) { |
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AVFilterLink *l = filter->outputs[out_no]; |
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unsigned ln = strlen(l->dst->name) + 1 + |
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strlen(l->dstpad->name); |
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e = cur + max_out_name + 2; |
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BPRINTF("%s", l->srcpad->name); |
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BPAD('-', e - cur); |
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e = cur + max_out_fmt + 2 + |
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max_dst_name - ln; |
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cur += snprint_link_prop(cur, buf_end, l); |
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BPAD('-', e - cur); |
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BPRINTF("%s:%s", l->dst->name, l->dstpad->name); |
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} |
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BPRINTF("\n"); |
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} |
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BPAD(' ', in_indent); |
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BPRINTF("+"); |
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BPAD('-', width); |
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BPRINTF("+\n"); |
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BPRINTF("\n"); |
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} |
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if (cur < buf_end) |
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*(cur++) = 0; |
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return cur - buf; |
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} |
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char *avfilter_graph_dump(AVFilterGraph *graph, const char *options) |
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{ |
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size_t buf_size = avfilter_graph_dump_to_buf(graph, NULL, NULL); |
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char *buf = av_malloc(buf_size); |
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if (!buf) |
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return NULL; |
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avfilter_graph_dump_to_buf(graph, buf, buf + buf_size); |
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return buf; |
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} |
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