mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
lavfi: add avfilter_graph_dump.
This commit is contained in:
Nicolas George
parent
9bd44b42a8
commit
0c3577bfd9
@ -13,6 +13,9 @@ libavutil: 2011-04-18
|
||||
|
||||
API changes, most recent first:
|
||||
|
||||
2012-01-24 - xxxxxxx - lavfi 2.60.100
|
||||
Add avfilter_graph_dump.
|
||||
|
||||
2012-01-15 - lavc 53.34.0
|
||||
New audio encoding API:
|
||||
b2c75b6 Add CODEC_CAP_VARIABLE_FRAME_SIZE capability for use by audio
|
||||
|
||||
@ -18,6 +18,7 @@ OBJS = allfilters.o \
|
||||
defaults.o \
|
||||
drawutils.o \
|
||||
formats.o \
|
||||
graphdump.o \
|
||||
graphparser.o \
|
||||
transform.o \
|
||||
vsrc_buffer.o
|
||||
|
||||
@ -171,5 +171,14 @@ int avfilter_graph_send_command(AVFilterGraph *graph, const char *target, const
|
||||
int avfilter_graph_queue_command(AVFilterGraph *graph, const char *target, const char *cmd, const char *arg, int flags, double ts);
|
||||
|
||||
|
||||
/**
|
||||
* Dump a graph into a human-readable string representation.
|
||||
*
|
||||
* @param graph the graph to dump
|
||||
* @param options formatting options; currently ignored
|
||||
* @return a string, or NULL in case of memory allocation failure;
|
||||
* the string must be freed using av_free
|
||||
*/
|
||||
char *avfilter_graph_dump(AVFilterGraph *graph, const char *options);
|
||||
|
||||
#endif /* AVFILTER_AVFILTERGRAPH_H */
|
||||
|
||||
171
libavfilter/graphdump.c
Normal file
171
libavfilter/graphdump.c
Normal file
@ -0,0 +1,171 @@
|
||||
/*
|
||||
* 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;
|
||||
}
|
||||
@ -29,8 +29,8 @@
|
||||
#include "libavutil/avutil.h"
|
||||
|
||||
#define LIBAVFILTER_VERSION_MAJOR 2
|
||||
#define LIBAVFILTER_VERSION_MINOR 59
|
||||
#define LIBAVFILTER_VERSION_MICRO 102
|
||||
#define LIBAVFILTER_VERSION_MINOR 60
|
||||
#define LIBAVFILTER_VERSION_MICRO 100
|
||||
|
||||
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
|
||||
LIBAVFILTER_VERSION_MINOR, \
|
||||
|
||||
Loading…
Reference in New Issue
Block a user