mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-08-20 16:25:04 +02:00
983 lines
29 KiB
C
983 lines
29 KiB
C
/*
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* avprobe : Simple Media Prober based on the Libav libraries
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* Copyright (c) 2007-2010 Stefano Sabatini
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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 "config.h"
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#include "libavformat/avformat.h"
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#include "libavcodec/avcodec.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/dict.h"
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#include "libavutil/libm.h"
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#include "libavdevice/avdevice.h"
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#include "cmdutils.h"
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const char program_name[] = "avprobe";
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const int program_birth_year = 2007;
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static int do_show_format = 0;
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static AVDictionary *fmt_entries_to_show = NULL;
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static int nb_fmt_entries_to_show;
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static int do_show_packets = 0;
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static int do_show_streams = 0;
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static int show_value_unit = 0;
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static int use_value_prefix = 0;
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static int use_byte_value_binary_prefix = 0;
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static int use_value_sexagesimal_format = 0;
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/* globals */
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static const OptionDef *options;
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/* AVprobe context */
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static const char *input_filename;
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static AVInputFormat *iformat = NULL;
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static const char *const binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
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static const char *const decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" };
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static const char unit_second_str[] = "s" ;
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static const char unit_hertz_str[] = "Hz" ;
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static const char unit_byte_str[] = "byte" ;
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static const char unit_bit_per_second_str[] = "bit/s";
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static void exit_program(void)
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{
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av_dict_free(&fmt_entries_to_show);
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}
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/*
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* The output is structured in array and objects that might contain items
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* Array could require the objects within to not be named.
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* Object could require the items within to be named.
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*
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* For flat representation the name of each section is saved on prefix so it
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* can be rendered in order to represent nested structures (e.g. array of
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* objects for the packets list).
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*
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* Within an array each element can need an unique identifier or an index.
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*
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* Nesting level is accounted separately.
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*/
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typedef enum {
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ARRAY,
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OBJECT
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} ProbeElementType;
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typedef struct {
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const char *name;
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ProbeElementType type;
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int64_t index;
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int64_t nb_elems;
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} ProbeElement;
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typedef struct {
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ProbeElement *prefix;
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int level;
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void (*print_header)(void);
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void (*print_footer)(void);
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void (*print_array_header) (const char *name);
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void (*print_array_footer) (const char *name);
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void (*print_object_header)(const char *name);
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void (*print_object_footer)(const char *name);
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void (*print_integer) (const char *key, int64_t value);
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void (*print_string) (const char *key, const char *value);
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} OutputContext;
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static AVIOContext *probe_out = NULL;
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static OutputContext octx;
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#define AVP_INDENT() avio_printf(probe_out, "%*c", octx.level * 2, ' ')
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/*
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* Default format, INI
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*
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* - all key and values are utf8
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* - '.' is the subgroup separator
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* - newlines and the following characters are escaped
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* - '\' is the escape character
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* - '#' is the comment
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* - '=' is the key/value separators
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* - ':' is not used but usually parsed as key/value separator
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*/
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static void ini_print_header(void)
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{
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avio_printf(probe_out, "# avprobe output\n\n");
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}
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static void ini_print_footer(void)
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{
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avio_w8(probe_out, '\n');
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}
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static void ini_escape_print(const char *s)
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{
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int i = 0;
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char c = 0;
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while (c = s[i++]) {
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switch (c) {
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case '\r': avio_printf(probe_out, "%s", "\\r"); break;
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case '\n': avio_printf(probe_out, "%s", "\\n"); break;
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case '\f': avio_printf(probe_out, "%s", "\\f"); break;
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case '\b': avio_printf(probe_out, "%s", "\\b"); break;
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case '\t': avio_printf(probe_out, "%s", "\\t"); break;
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case '\\':
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case '#' :
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case '=' :
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case ':' : avio_w8(probe_out, '\\');
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default:
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if ((unsigned char)c < 32)
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avio_printf(probe_out, "\\x00%02x", c & 0xff);
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else
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avio_w8(probe_out, c);
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break;
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}
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}
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}
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static void ini_print_array_header(const char *name)
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{
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if (octx.prefix[octx.level -1].nb_elems)
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avio_printf(probe_out, "\n");
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}
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static void ini_print_object_header(const char *name)
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{
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int i;
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ProbeElement *el = octx.prefix + octx.level -1;
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if (el->nb_elems)
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avio_printf(probe_out, "\n");
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avio_printf(probe_out, "[");
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for (i = 1; i < octx.level; i++) {
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el = octx.prefix + i;
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avio_printf(probe_out, "%s.", el->name);
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if (el->index >= 0)
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avio_printf(probe_out, "%"PRId64".", el->index);
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}
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avio_printf(probe_out, "%s", name);
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if (el && el->type == ARRAY)
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avio_printf(probe_out, ".%"PRId64"", el->nb_elems);
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avio_printf(probe_out, "]\n");
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}
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static void ini_print_integer(const char *key, int64_t value)
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{
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ini_escape_print(key);
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avio_printf(probe_out, "=%"PRId64"\n", value);
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}
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static void ini_print_string(const char *key, const char *value)
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{
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ini_escape_print(key);
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avio_printf(probe_out, "=");
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ini_escape_print(value);
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avio_w8(probe_out, '\n');
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}
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/*
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* Alternate format, JSON
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*/
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static void json_print_header(void)
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{
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avio_printf(probe_out, "{");
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}
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static void json_print_footer(void)
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{
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avio_printf(probe_out, "}\n");
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}
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static void json_print_array_header(const char *name)
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{
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if (octx.prefix[octx.level -1].nb_elems)
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avio_printf(probe_out, ",\n");
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AVP_INDENT();
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avio_printf(probe_out, "\"%s\" : ", name);
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avio_printf(probe_out, "[\n");
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}
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static void json_print_array_footer(const char *name)
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{
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avio_printf(probe_out, "\n");
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AVP_INDENT();
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avio_printf(probe_out, "]");
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}
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static void json_print_object_header(const char *name)
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{
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if (octx.prefix[octx.level -1].nb_elems)
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avio_printf(probe_out, ",\n");
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AVP_INDENT();
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if (octx.prefix[octx.level -1].type == OBJECT)
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avio_printf(probe_out, "\"%s\" : ", name);
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avio_printf(probe_out, "{\n");
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}
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static void json_print_object_footer(const char *name)
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{
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avio_printf(probe_out, "\n");
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AVP_INDENT();
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avio_printf(probe_out, "}");
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}
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static void json_print_integer(const char *key, int64_t value)
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{
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if (octx.prefix[octx.level -1].nb_elems)
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avio_printf(probe_out, ",\n");
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AVP_INDENT();
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avio_printf(probe_out, "\"%s\" : %"PRId64"", key, value);
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}
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static void json_escape_print(const char *s)
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{
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int i = 0;
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char c = 0;
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while (c = s[i++]) {
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switch (c) {
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case '\r': avio_printf(probe_out, "%s", "\\r"); break;
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case '\n': avio_printf(probe_out, "%s", "\\n"); break;
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case '\f': avio_printf(probe_out, "%s", "\\f"); break;
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case '\b': avio_printf(probe_out, "%s", "\\b"); break;
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case '\t': avio_printf(probe_out, "%s", "\\t"); break;
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case '\\':
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case '"' : avio_w8(probe_out, '\\');
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default:
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if ((unsigned char)c < 32)
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avio_printf(probe_out, "\\u00%02x", c & 0xff);
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else
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avio_w8(probe_out, c);
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break;
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}
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}
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}
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static void json_print_string(const char *key, const char *value)
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{
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if (octx.prefix[octx.level -1].nb_elems)
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avio_printf(probe_out, ",\n");
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AVP_INDENT();
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avio_w8(probe_out, '\"');
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json_escape_print(key);
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avio_printf(probe_out, "\" : \"");
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json_escape_print(value);
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avio_w8(probe_out, '\"');
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}
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/*
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* old-style pseudo-INI
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*/
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static void old_print_object_header(const char *name)
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{
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char *str, *p;
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if (!strcmp(name, "tags"))
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return;
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str = p = av_strdup(name);
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while (*p) {
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*p = toupper(*p);
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p++;
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}
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avio_printf(probe_out, "[%s]\n", str);
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av_freep(&str);
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}
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static void old_print_object_footer(const char *name)
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{
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char *str, *p;
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if (!strcmp(name, "tags"))
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return;
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str = p = av_strdup(name);
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while (*p) {
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*p = toupper(*p);
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p++;
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}
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avio_printf(probe_out, "[/%s]\n", str);
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av_freep(&str);
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}
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static void old_print_string(const char *key, const char *value)
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{
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if (!strcmp(octx.prefix[octx.level - 1].name, "tags"))
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avio_printf(probe_out, "TAG:");
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ini_print_string(key, value);
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}
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/*
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* Simple Formatter for single entries.
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*/
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static void show_format_entry_integer(const char *key, int64_t value)
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{
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if (key && av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
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if (nb_fmt_entries_to_show > 1)
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avio_printf(probe_out, "%s=", key);
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avio_printf(probe_out, "%"PRId64"\n", value);
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}
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}
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static void show_format_entry_string(const char *key, const char *value)
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{
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if (key && av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
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if (nb_fmt_entries_to_show > 1)
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avio_printf(probe_out, "%s=", key);
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avio_printf(probe_out, "%s\n", value);
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}
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}
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static void probe_group_enter(const char *name, int type)
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{
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int64_t count = -1;
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octx.prefix =
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av_realloc(octx.prefix, sizeof(ProbeElement) * (octx.level + 1));
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if (!octx.prefix || !name) {
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fprintf(stderr, "Out of memory\n");
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exit(1);
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}
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if (octx.level) {
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ProbeElement *parent = octx.prefix + octx.level -1;
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if (parent->type == ARRAY)
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count = parent->nb_elems;
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parent->nb_elems++;
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}
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octx.prefix[octx.level++] = (ProbeElement){name, type, count, 0};
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}
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static void probe_group_leave(void)
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{
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--octx.level;
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}
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static void probe_header(void)
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{
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if (octx.print_header)
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octx.print_header();
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probe_group_enter("root", OBJECT);
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}
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static void probe_footer(void)
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{
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if (octx.print_footer)
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octx.print_footer();
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probe_group_leave();
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}
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static void probe_array_header(const char *name)
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{
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if (octx.print_array_header)
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octx.print_array_header(name);
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probe_group_enter(name, ARRAY);
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}
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static void probe_array_footer(const char *name)
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{
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probe_group_leave();
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if (octx.print_array_footer)
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octx.print_array_footer(name);
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}
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static void probe_object_header(const char *name)
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{
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if (octx.print_object_header)
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octx.print_object_header(name);
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probe_group_enter(name, OBJECT);
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}
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static void probe_object_footer(const char *name)
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{
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probe_group_leave();
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if (octx.print_object_footer)
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octx.print_object_footer(name);
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}
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static void probe_int(const char *key, int64_t value)
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{
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octx.print_integer(key, value);
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octx.prefix[octx.level -1].nb_elems++;
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}
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static void probe_str(const char *key, const char *value)
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{
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octx.print_string(key, value);
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octx.prefix[octx.level -1].nb_elems++;
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}
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static void probe_dict(AVDictionary *dict, const char *name)
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{
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AVDictionaryEntry *entry = NULL;
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if (!dict)
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return;
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probe_object_header(name);
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while ((entry = av_dict_get(dict, "", entry, AV_DICT_IGNORE_SUFFIX))) {
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probe_str(entry->key, entry->value);
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}
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probe_object_footer(name);
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}
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static char *value_string(char *buf, int buf_size, double val, const char *unit)
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{
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if (unit == unit_second_str && use_value_sexagesimal_format) {
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double secs;
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int hours, mins;
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secs = val;
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mins = (int)secs / 60;
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secs = secs - mins * 60;
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hours = mins / 60;
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mins %= 60;
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snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
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} else if (use_value_prefix) {
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const char *prefix_string;
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int index;
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if (unit == unit_byte_str && use_byte_value_binary_prefix) {
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index = (int) log2(val) / 10;
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index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) - 1);
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val /= pow(2, index * 10);
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prefix_string = binary_unit_prefixes[index];
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} else {
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index = (int) (log10(val)) / 3;
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index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) - 1);
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val /= pow(10, index * 3);
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prefix_string = decimal_unit_prefixes[index];
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}
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snprintf(buf, buf_size, "%.*f%s%s",
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index ? 3 : 0, val,
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prefix_string,
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show_value_unit ? unit : "");
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} else {
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snprintf(buf, buf_size, "%f%s", val, show_value_unit ? unit : "");
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}
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return buf;
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}
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static char *time_value_string(char *buf, int buf_size, int64_t val,
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const AVRational *time_base)
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{
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if (val == AV_NOPTS_VALUE) {
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snprintf(buf, buf_size, "N/A");
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} else {
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value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str);
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}
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return buf;
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}
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static char *ts_value_string(char *buf, int buf_size, int64_t ts)
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{
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if (ts == AV_NOPTS_VALUE) {
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snprintf(buf, buf_size, "N/A");
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} else {
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snprintf(buf, buf_size, "%"PRId64, ts);
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}
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return buf;
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}
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|
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static char *rational_string(char *buf, int buf_size, const char *sep,
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const AVRational *rat)
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{
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snprintf(buf, buf_size, "%d%s%d", rat->num, sep, rat->den);
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return buf;
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}
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static char *tag_string(char *buf, int buf_size, int tag)
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{
|
|
snprintf(buf, buf_size, "0x%04x", tag);
|
|
return buf;
|
|
}
|
|
|
|
|
|
|
|
static const char *media_type_string(enum AVMediaType media_type)
|
|
{
|
|
switch (media_type) {
|
|
case AVMEDIA_TYPE_VIDEO: return "video";
|
|
case AVMEDIA_TYPE_AUDIO: return "audio";
|
|
case AVMEDIA_TYPE_DATA: return "data";
|
|
case AVMEDIA_TYPE_SUBTITLE: return "subtitle";
|
|
case AVMEDIA_TYPE_ATTACHMENT: return "attachment";
|
|
default: return "unknown";
|
|
}
|
|
}
|
|
|
|
static void show_packet(AVFormatContext *fmt_ctx, AVPacket *pkt)
|
|
{
|
|
char val_str[128];
|
|
AVStream *st = fmt_ctx->streams[pkt->stream_index];
|
|
|
|
probe_object_header("packet");
|
|
probe_str("codec_type", media_type_string(st->codec->codec_type));
|
|
probe_int("stream_index", pkt->stream_index);
|
|
probe_str("pts", ts_value_string(val_str, sizeof(val_str), pkt->pts));
|
|
probe_str("pts_time", time_value_string(val_str, sizeof(val_str),
|
|
pkt->pts, &st->time_base));
|
|
probe_str("dts", ts_value_string(val_str, sizeof(val_str), pkt->dts));
|
|
probe_str("dts_time", time_value_string(val_str, sizeof(val_str),
|
|
pkt->dts, &st->time_base));
|
|
probe_str("duration", ts_value_string(val_str, sizeof(val_str),
|
|
pkt->duration));
|
|
probe_str("duration_time", time_value_string(val_str, sizeof(val_str),
|
|
pkt->duration,
|
|
&st->time_base));
|
|
probe_str("size", value_string(val_str, sizeof(val_str),
|
|
pkt->size, unit_byte_str));
|
|
probe_int("pos", pkt->pos);
|
|
probe_str("flags", pkt->flags & AV_PKT_FLAG_KEY ? "K" : "_");
|
|
probe_object_footer("packet");
|
|
}
|
|
|
|
static void show_packets(AVFormatContext *fmt_ctx)
|
|
{
|
|
AVPacket pkt;
|
|
|
|
av_init_packet(&pkt);
|
|
probe_array_header("packets");
|
|
while (!av_read_frame(fmt_ctx, &pkt))
|
|
show_packet(fmt_ctx, &pkt);
|
|
probe_array_footer("packets");
|
|
}
|
|
|
|
static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
|
|
{
|
|
AVStream *stream = fmt_ctx->streams[stream_idx];
|
|
AVCodecContext *dec_ctx;
|
|
const AVCodec *dec;
|
|
const char *profile;
|
|
char val_str[128];
|
|
AVRational display_aspect_ratio, *sar = NULL;
|
|
const AVPixFmtDescriptor *desc;
|
|
|
|
probe_object_header("stream");
|
|
|
|
probe_int("index", stream->index);
|
|
|
|
if ((dec_ctx = stream->codec)) {
|
|
if ((dec = dec_ctx->codec)) {
|
|
probe_str("codec_name", dec->name);
|
|
probe_str("codec_long_name", dec->long_name);
|
|
} else {
|
|
probe_str("codec_name", "unknown");
|
|
}
|
|
|
|
probe_str("codec_type", media_type_string(dec_ctx->codec_type));
|
|
probe_str("codec_time_base",
|
|
rational_string(val_str, sizeof(val_str),
|
|
"/", &dec_ctx->time_base));
|
|
|
|
/* print AVI/FourCC tag */
|
|
av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
|
|
probe_str("codec_tag_string", val_str);
|
|
probe_str("codec_tag", tag_string(val_str, sizeof(val_str),
|
|
dec_ctx->codec_tag));
|
|
|
|
/* print profile, if there is one */
|
|
if (dec && (profile = av_get_profile_name(dec, dec_ctx->profile)))
|
|
probe_str("profile", profile);
|
|
|
|
switch (dec_ctx->codec_type) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
probe_int("width", dec_ctx->width);
|
|
probe_int("height", dec_ctx->height);
|
|
probe_int("has_b_frames", dec_ctx->has_b_frames);
|
|
if (dec_ctx->sample_aspect_ratio.num)
|
|
sar = &dec_ctx->sample_aspect_ratio;
|
|
else if (stream->sample_aspect_ratio.num)
|
|
sar = &stream->sample_aspect_ratio;
|
|
|
|
if (sar) {
|
|
probe_str("sample_aspect_ratio",
|
|
rational_string(val_str, sizeof(val_str), ":", sar));
|
|
av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
|
|
dec_ctx->width * sar->num, dec_ctx->height * sar->den,
|
|
1024*1024);
|
|
probe_str("display_aspect_ratio",
|
|
rational_string(val_str, sizeof(val_str), ":",
|
|
&display_aspect_ratio));
|
|
}
|
|
desc = av_pix_fmt_desc_get(dec_ctx->pix_fmt);
|
|
probe_str("pix_fmt", desc ? desc->name : "unknown");
|
|
probe_int("level", dec_ctx->level);
|
|
break;
|
|
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
probe_str("sample_rate",
|
|
value_string(val_str, sizeof(val_str),
|
|
dec_ctx->sample_rate,
|
|
unit_hertz_str));
|
|
probe_int("channels", dec_ctx->channels);
|
|
probe_int("bits_per_sample",
|
|
av_get_bits_per_sample(dec_ctx->codec_id));
|
|
break;
|
|
}
|
|
} else {
|
|
probe_str("codec_type", "unknown");
|
|
}
|
|
|
|
if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
|
|
probe_int("id", stream->id);
|
|
probe_str("avg_frame_rate",
|
|
rational_string(val_str, sizeof(val_str), "/",
|
|
&stream->avg_frame_rate));
|
|
if (dec_ctx->bit_rate)
|
|
probe_str("bit_rate",
|
|
value_string(val_str, sizeof(val_str),
|
|
dec_ctx->bit_rate, unit_bit_per_second_str));
|
|
probe_str("time_base",
|
|
rational_string(val_str, sizeof(val_str), "/",
|
|
&stream->time_base));
|
|
probe_str("start_time",
|
|
time_value_string(val_str, sizeof(val_str),
|
|
stream->start_time, &stream->time_base));
|
|
probe_str("duration",
|
|
time_value_string(val_str, sizeof(val_str),
|
|
stream->duration, &stream->time_base));
|
|
if (stream->nb_frames)
|
|
probe_int("nb_frames", stream->nb_frames);
|
|
|
|
probe_dict(stream->metadata, "tags");
|
|
|
|
probe_object_footer("stream");
|
|
}
|
|
|
|
static void show_format(AVFormatContext *fmt_ctx)
|
|
{
|
|
char val_str[128];
|
|
int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
|
|
|
|
probe_object_header("format");
|
|
probe_str("filename", fmt_ctx->filename);
|
|
probe_int("nb_streams", fmt_ctx->nb_streams);
|
|
probe_str("format_name", fmt_ctx->iformat->name);
|
|
probe_str("format_long_name", fmt_ctx->iformat->long_name);
|
|
probe_str("start_time",
|
|
time_value_string(val_str, sizeof(val_str),
|
|
fmt_ctx->start_time, &AV_TIME_BASE_Q));
|
|
probe_str("duration",
|
|
time_value_string(val_str, sizeof(val_str),
|
|
fmt_ctx->duration, &AV_TIME_BASE_Q));
|
|
probe_str("size",
|
|
size >= 0 ? value_string(val_str, sizeof(val_str),
|
|
size, unit_byte_str)
|
|
: "unknown");
|
|
probe_str("bit_rate",
|
|
value_string(val_str, sizeof(val_str),
|
|
fmt_ctx->bit_rate, unit_bit_per_second_str));
|
|
|
|
probe_dict(fmt_ctx->metadata, "tags");
|
|
|
|
probe_object_footer("format");
|
|
}
|
|
|
|
static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
|
|
{
|
|
int err, i;
|
|
AVFormatContext *fmt_ctx = NULL;
|
|
AVDictionaryEntry *t;
|
|
|
|
if ((err = avformat_open_input(&fmt_ctx, filename,
|
|
iformat, &format_opts)) < 0) {
|
|
print_error(filename, err);
|
|
return err;
|
|
}
|
|
if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
|
|
av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
|
|
return AVERROR_OPTION_NOT_FOUND;
|
|
}
|
|
|
|
|
|
/* fill the streams in the format context */
|
|
if ((err = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
|
|
print_error(filename, err);
|
|
return err;
|
|
}
|
|
|
|
av_dump_format(fmt_ctx, 0, filename, 0);
|
|
|
|
/* bind a decoder to each input stream */
|
|
for (i = 0; i < fmt_ctx->nb_streams; i++) {
|
|
AVStream *stream = fmt_ctx->streams[i];
|
|
AVCodec *codec;
|
|
|
|
if (stream->codec->codec_id == AV_CODEC_ID_PROBE) {
|
|
fprintf(stderr, "Failed to probe codec for input stream %d\n",
|
|
stream->index);
|
|
} else if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
|
|
fprintf(stderr,
|
|
"Unsupported codec with id %d for input stream %d\n",
|
|
stream->codec->codec_id, stream->index);
|
|
} else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
|
|
fprintf(stderr, "Error while opening codec for input stream %d\n",
|
|
stream->index);
|
|
}
|
|
}
|
|
|
|
*fmt_ctx_ptr = fmt_ctx;
|
|
return 0;
|
|
}
|
|
|
|
static void close_input_file(AVFormatContext **ctx_ptr)
|
|
{
|
|
int i;
|
|
AVFormatContext *fmt_ctx = *ctx_ptr;
|
|
|
|
/* close decoder for each stream */
|
|
for (i = 0; i < fmt_ctx->nb_streams; i++) {
|
|
AVStream *stream = fmt_ctx->streams[i];
|
|
|
|
avcodec_close(stream->codec);
|
|
}
|
|
avformat_close_input(ctx_ptr);
|
|
}
|
|
|
|
static int probe_file(const char *filename)
|
|
{
|
|
AVFormatContext *fmt_ctx;
|
|
int ret, i;
|
|
|
|
if ((ret = open_input_file(&fmt_ctx, filename)))
|
|
return ret;
|
|
|
|
if (do_show_format)
|
|
show_format(fmt_ctx);
|
|
|
|
if (do_show_streams) {
|
|
probe_array_header("streams");
|
|
for (i = 0; i < fmt_ctx->nb_streams; i++)
|
|
show_stream(fmt_ctx, i);
|
|
probe_array_footer("streams");
|
|
}
|
|
|
|
if (do_show_packets)
|
|
show_packets(fmt_ctx);
|
|
|
|
close_input_file(&fmt_ctx);
|
|
return 0;
|
|
}
|
|
|
|
static void show_usage(void)
|
|
{
|
|
printf("Simple multimedia streams analyzer\n");
|
|
printf("usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
|
|
printf("\n");
|
|
}
|
|
|
|
static int opt_format(void *optctx, const char *opt, const char *arg)
|
|
{
|
|
iformat = av_find_input_format(arg);
|
|
if (!iformat) {
|
|
fprintf(stderr, "Unknown input format: %s\n", arg);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int opt_output_format(void *optctx, const char *opt, const char *arg)
|
|
{
|
|
|
|
if (!strcmp(arg, "json")) {
|
|
octx.print_header = json_print_header;
|
|
octx.print_footer = json_print_footer;
|
|
octx.print_array_header = json_print_array_header;
|
|
octx.print_array_footer = json_print_array_footer;
|
|
octx.print_object_header = json_print_object_header;
|
|
octx.print_object_footer = json_print_object_footer;
|
|
|
|
octx.print_integer = json_print_integer;
|
|
octx.print_string = json_print_string;
|
|
} else if (!strcmp(arg, "ini")) {
|
|
octx.print_header = ini_print_header;
|
|
octx.print_footer = ini_print_footer;
|
|
octx.print_array_header = ini_print_array_header;
|
|
octx.print_object_header = ini_print_object_header;
|
|
|
|
octx.print_integer = ini_print_integer;
|
|
octx.print_string = ini_print_string;
|
|
} else if (!strcmp(arg, "old")) {
|
|
octx.print_header = NULL;
|
|
octx.print_object_header = old_print_object_header;
|
|
octx.print_object_footer = old_print_object_footer;
|
|
|
|
octx.print_string = old_print_string;
|
|
} else {
|
|
av_log(NULL, AV_LOG_ERROR, "Unsupported formatter %s\n", arg);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int opt_show_format_entry(void *optctx, const char *opt, const char *arg)
|
|
{
|
|
do_show_format = 1;
|
|
nb_fmt_entries_to_show++;
|
|
octx.print_header = NULL;
|
|
octx.print_footer = NULL;
|
|
octx.print_array_header = NULL;
|
|
octx.print_array_footer = NULL;
|
|
octx.print_object_header = NULL;
|
|
octx.print_object_footer = NULL;
|
|
|
|
octx.print_integer = show_format_entry_integer;
|
|
octx.print_string = show_format_entry_string;
|
|
av_dict_set(&fmt_entries_to_show, arg, "", 0);
|
|
return 0;
|
|
}
|
|
|
|
static void opt_input_file(void *optctx, const char *arg)
|
|
{
|
|
if (input_filename) {
|
|
fprintf(stderr,
|
|
"Argument '%s' provided as input filename, but '%s' was already specified.\n",
|
|
arg, input_filename);
|
|
exit(1);
|
|
}
|
|
if (!strcmp(arg, "-"))
|
|
arg = "pipe:";
|
|
input_filename = arg;
|
|
}
|
|
|
|
void show_help_default(const char *opt, const char *arg)
|
|
{
|
|
av_log_set_callback(log_callback_help);
|
|
show_usage();
|
|
show_help_options(options, "Main options:", 0, 0, 0);
|
|
printf("\n");
|
|
show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
|
|
}
|
|
|
|
static int opt_pretty(void *optctx, const char *opt, const char *arg)
|
|
{
|
|
show_value_unit = 1;
|
|
use_value_prefix = 1;
|
|
use_byte_value_binary_prefix = 1;
|
|
use_value_sexagesimal_format = 1;
|
|
return 0;
|
|
}
|
|
|
|
static const OptionDef real_options[] = {
|
|
#include "cmdutils_common_opts.h"
|
|
{ "f", HAS_ARG, {.func_arg = opt_format}, "force format", "format" },
|
|
{ "of", HAS_ARG, {.func_arg = opt_output_format}, "output the document either as ini or json", "output_format" },
|
|
{ "unit", OPT_BOOL, {&show_value_unit},
|
|
"show unit of the displayed values" },
|
|
{ "prefix", OPT_BOOL, {&use_value_prefix},
|
|
"use SI prefixes for the displayed values" },
|
|
{ "byte_binary_prefix", OPT_BOOL, {&use_byte_value_binary_prefix},
|
|
"use binary prefixes for byte units" },
|
|
{ "sexagesimal", OPT_BOOL, {&use_value_sexagesimal_format},
|
|
"use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
|
|
{ "pretty", 0, {.func_arg = opt_pretty},
|
|
"prettify the format of displayed values, make it more human readable" },
|
|
{ "show_format", OPT_BOOL, {&do_show_format} , "show format/container info" },
|
|
{ "show_format_entry", HAS_ARG, {.func_arg = opt_show_format_entry},
|
|
"show a particular entry from the format/container info", "entry" },
|
|
{ "show_packets", OPT_BOOL, {&do_show_packets}, "show packets info" },
|
|
{ "show_streams", OPT_BOOL, {&do_show_streams}, "show streams info" },
|
|
{ "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {.func_arg = opt_default},
|
|
"generic catch all option", "" },
|
|
{ NULL, },
|
|
};
|
|
|
|
static int probe_buf_write(void *opaque, uint8_t *buf, int buf_size)
|
|
{
|
|
printf("%.*s", buf_size, buf);
|
|
return 0;
|
|
}
|
|
|
|
#define AVP_BUFFSIZE 4096
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int ret;
|
|
uint8_t *buffer = av_malloc(AVP_BUFFSIZE);
|
|
|
|
if (!buffer)
|
|
exit(1);
|
|
|
|
atexit(exit_program);
|
|
|
|
options = real_options;
|
|
parse_loglevel(argc, argv, options);
|
|
av_register_all();
|
|
avformat_network_init();
|
|
init_opts();
|
|
#if CONFIG_AVDEVICE
|
|
avdevice_register_all();
|
|
#endif
|
|
|
|
show_banner();
|
|
|
|
octx.print_header = ini_print_header;
|
|
octx.print_footer = ini_print_footer;
|
|
|
|
octx.print_array_header = ini_print_array_header;
|
|
octx.print_object_header = ini_print_object_header;
|
|
|
|
octx.print_integer = ini_print_integer;
|
|
octx.print_string = ini_print_string;
|
|
|
|
parse_options(NULL, argc, argv, options, opt_input_file);
|
|
|
|
if (!input_filename) {
|
|
show_usage();
|
|
fprintf(stderr, "You have to specify one input file.\n");
|
|
fprintf(stderr,
|
|
"Use -h to get full help or, even better, run 'man %s'.\n",
|
|
program_name);
|
|
exit(1);
|
|
}
|
|
|
|
probe_out = avio_alloc_context(buffer, AVP_BUFFSIZE, 1, NULL, NULL,
|
|
probe_buf_write, NULL);
|
|
if (!probe_out)
|
|
exit(1);
|
|
|
|
probe_header();
|
|
ret = probe_file(input_filename);
|
|
probe_footer();
|
|
avio_flush(probe_out);
|
|
avio_close(probe_out);
|
|
|
|
avformat_network_deinit();
|
|
|
|
return ret;
|
|
}
|