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ffmpeg/ffprobe.c
Stefano Sabatini 3b1355bb93 ffprobe: change formatting logic in the JSON writer 
Print a "\n" at the end of each section, also print the section name in
the section print function, print the chapter name only in case the
chapter contains multiple entries.

Increase textual output readability - different sections can be
distinguished more easily.
2012-01-09 13:41:35 +01:00

1675 lines
54 KiB
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/*
* Copyright (c) 2007-2010 Stefano Sabatini
*
* 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
*/
/**
* @file
* simple media prober based on the FFmpeg libraries
*/
#include "config.h"
#include "libavformat/avformat.h"
#include "libavcodec/avcodec.h"
#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/dict.h"
#include "libavdevice/avdevice.h"
#include "cmdutils.h"
const char program_name[] = "ffprobe";
const int program_birth_year = 2007;
static int do_show_error = 0;
static int do_show_format = 0;
static int do_show_frames = 0;
static int do_show_packets = 0;
static int do_show_streams = 0;
static int show_value_unit = 0;
static int use_value_prefix = 0;
static int use_byte_value_binary_prefix = 0;
static int use_value_sexagesimal_format = 0;
static int show_private_data = 1;
static char *print_format;
static const OptionDef options[];
/* FFprobe context */
static const char *input_filename;
static AVInputFormat *iformat = NULL;
static const char *binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
static const char *decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P" };
static const char *unit_second_str = "s" ;
static const char *unit_hertz_str = "Hz" ;
static const char *unit_byte_str = "byte" ;
static const char *unit_bit_per_second_str = "bit/s";
void av_noreturn exit_program(int ret)
{
exit(ret);
}
struct unit_value {
union { double d; int i; } val;
const char *unit;
};
static char *value_string(char *buf, int buf_size, struct unit_value uv)
{
double vald;
int show_float = 0;
if (uv.unit == unit_second_str) {
vald = uv.val.d;
show_float = 1;
} else {
vald = uv.val.i;
}
if (uv.unit == unit_second_str && use_value_sexagesimal_format) {
double secs;
int hours, mins;
secs = vald;
mins = (int)secs / 60;
secs = secs - mins * 60;
hours = mins / 60;
mins %= 60;
snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
} else if (use_value_prefix) {
const char *prefix_string;
int index, l;
if (uv.unit == unit_byte_str && use_byte_value_binary_prefix) {
index = (int) (log(vald)/log(2)) / 10;
index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) -1);
vald /= pow(2, index*10);
prefix_string = binary_unit_prefixes[index];
} else {
index = (int) (log10(vald)) / 3;
index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) -1);
vald /= pow(10, index*3);
prefix_string = decimal_unit_prefixes[index];
}
if (show_float || vald != (int)vald) l = snprintf(buf, buf_size, "%.3f", vald);
else l = snprintf(buf, buf_size, "%d", (int)vald);
snprintf(buf+l, buf_size-l, "%s%s%s", prefix_string || show_value_unit ? " " : "",
prefix_string, show_value_unit ? uv.unit : "");
} else {
int l;
if (show_float) l = snprintf(buf, buf_size, "%.3f", vald);
else l = snprintf(buf, buf_size, "%d", (int)vald);
snprintf(buf+l, buf_size-l, "%s%s", show_value_unit ? " " : "",
show_value_unit ? uv.unit : "");
}
return buf;
}
/* WRITERS API */
typedef struct WriterContext WriterContext;
#define WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS 1
#define WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER 2
typedef struct Writer {
int priv_size; ///< private size for the writer context
const char *name;
int (*init) (WriterContext *wctx, const char *args, void *opaque);
void (*uninit)(WriterContext *wctx);
void (*print_header)(WriterContext *ctx);
void (*print_footer)(WriterContext *ctx);
void (*print_chapter_header)(WriterContext *wctx, const char *);
void (*print_chapter_footer)(WriterContext *wctx, const char *);
void (*print_section_header)(WriterContext *wctx, const char *);
void (*print_section_footer)(WriterContext *wctx, const char *);
void (*print_integer) (WriterContext *wctx, const char *, long long int);
void (*print_string) (WriterContext *wctx, const char *, const char *);
void (*show_tags) (WriterContext *wctx, AVDictionary *dict);
int flags; ///< a combination or WRITER_FLAG_*
} Writer;
struct WriterContext {
const AVClass *class; ///< class of the writer
const Writer *writer; ///< the Writer of which this is an instance
char *name; ///< name of this writer instance
void *priv; ///< private data for use by the filter
unsigned int nb_item; ///< number of the item printed in the given section, starting at 0
unsigned int nb_section; ///< number of the section printed in the given section sequence, starting at 0
unsigned int nb_chapter; ///< number of the chapter, starting at 0
};
static const char *writer_get_name(void *p)
{
WriterContext *wctx = p;
return wctx->writer->name;
}
static const AVClass writer_class = {
"Writer",
writer_get_name,
NULL,
LIBAVUTIL_VERSION_INT,
};
static void writer_close(WriterContext **wctx)
{
if (!*wctx)
return;
if ((*wctx)->writer->uninit)
(*wctx)->writer->uninit(*wctx);
av_freep(&((*wctx)->priv));
av_freep(wctx);
}
static int writer_open(WriterContext **wctx, const Writer *writer,
const char *args, void *opaque)
{
int ret = 0;
if (!(*wctx = av_malloc(sizeof(WriterContext)))) {
ret = AVERROR(ENOMEM);
goto fail;
}
if (!((*wctx)->priv = av_mallocz(writer->priv_size))) {
ret = AVERROR(ENOMEM);
goto fail;
}
(*wctx)->class = &writer_class;
(*wctx)->writer = writer;
if ((*wctx)->writer->init)
ret = (*wctx)->writer->init(*wctx, args, opaque);
if (ret < 0)
goto fail;
return 0;
fail:
writer_close(wctx);
return ret;
}
static inline void writer_print_header(WriterContext *wctx)
{
if (wctx->writer->print_header)
wctx->writer->print_header(wctx);
wctx->nb_chapter = 0;
}
static inline void writer_print_footer(WriterContext *wctx)
{
if (wctx->writer->print_footer)
wctx->writer->print_footer(wctx);
}
static inline void writer_print_chapter_header(WriterContext *wctx,
const char *chapter)
{
if (wctx->writer->print_chapter_header)
wctx->writer->print_chapter_header(wctx, chapter);
wctx->nb_section = 0;
}
static inline void writer_print_chapter_footer(WriterContext *wctx,
const char *chapter)
{
if (wctx->writer->print_chapter_footer)
wctx->writer->print_chapter_footer(wctx, chapter);
wctx->nb_chapter++;
}
static inline void writer_print_section_header(WriterContext *wctx,
const char *section)
{
if (wctx->writer->print_section_header)
wctx->writer->print_section_header(wctx, section);
wctx->nb_item = 0;
}
static inline void writer_print_section_footer(WriterContext *wctx,
const char *section)
{
if (wctx->writer->print_section_footer)
wctx->writer->print_section_footer(wctx, section);
wctx->nb_section++;
}
static inline void writer_print_integer(WriterContext *wctx,
const char *key, long long int val)
{
wctx->writer->print_integer(wctx, key, val);
wctx->nb_item++;
}
static inline void writer_print_string(WriterContext *wctx,
const char *key, const char *val, int opt)
{
if (opt && !(wctx->writer->flags & WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS))
return;
wctx->writer->print_string(wctx, key, val);
wctx->nb_item++;
}
static void writer_print_time(WriterContext *wctx, const char *key,
int64_t ts, const AVRational *time_base)
{
char buf[128];
if (ts == AV_NOPTS_VALUE) {
writer_print_string(wctx, key, "N/A", 1);
} else {
double d = ts * av_q2d(*time_base);
value_string(buf, sizeof(buf), (struct unit_value){.val.d=d, .unit=unit_second_str});
writer_print_string(wctx, key, buf, 0);
}
}
static void writer_print_ts(WriterContext *wctx, const char *key, int64_t ts)
{
if (ts == AV_NOPTS_VALUE) {
writer_print_string(wctx, key, "N/A", 1);
} else {
writer_print_integer(wctx, key, ts);
}
}
static inline void writer_show_tags(WriterContext *wctx, AVDictionary *dict)
{
wctx->writer->show_tags(wctx, dict);
}
#define MAX_REGISTERED_WRITERS_NB 64
static const Writer *registered_writers[MAX_REGISTERED_WRITERS_NB + 1];
static int writer_register(const Writer *writer)
{
static int next_registered_writer_idx = 0;
if (next_registered_writer_idx == MAX_REGISTERED_WRITERS_NB)
return AVERROR(ENOMEM);
registered_writers[next_registered_writer_idx++] = writer;
return 0;
}
static const Writer *writer_get_by_name(const char *name)
{
int i;
for (i = 0; registered_writers[i]; i++)
if (!strcmp(registered_writers[i]->name, name))
return registered_writers[i];
return NULL;
}
/* Print helpers */
struct print_buf {
char *s;
int len;
};
static char *fast_asprintf(struct print_buf *pbuf, const char *fmt, ...)
{
va_list va;
int len;
va_start(va, fmt);
len = vsnprintf(NULL, 0, fmt, va);
va_end(va);
if (len < 0)
goto fail;
if (pbuf->len < len) {
char *p = av_realloc(pbuf->s, len + 1);
if (!p)
goto fail;
pbuf->s = p;
pbuf->len = len;
}
va_start(va, fmt);
len = vsnprintf(pbuf->s, len + 1, fmt, va);
va_end(va);
if (len < 0)
goto fail;
return pbuf->s;
fail:
av_freep(&pbuf->s);
pbuf->len = 0;
return NULL;
}
#define ESCAPE_INIT_BUF_SIZE 256
#define ESCAPE_CHECK_SIZE(src, size, max_size) \
if (size > max_size) { \
char buf[64]; \
snprintf(buf, sizeof(buf), "%s", src); \
av_log(log_ctx, AV_LOG_WARNING, \
"String '%s...' with is too big\n", buf); \
return "FFPROBE_TOO_BIG_STRING"; \
}
#define ESCAPE_REALLOC_BUF(dst_size_p, dst_p, src, size) \
if (*dst_size_p < size) { \
char *q = av_realloc(*dst_p, size); \
if (!q) { \
char buf[64]; \
snprintf(buf, sizeof(buf), "%s", src); \
av_log(log_ctx, AV_LOG_WARNING, \
"String '%s...' could not be escaped\n", buf); \
return "FFPROBE_THIS_STRING_COULD_NOT_BE_ESCAPED"; \
} \
*dst_size_p = size; \
*dst = q; \
}
/* WRITERS */
/* Default output */
static void default_print_footer(WriterContext *wctx)
{
printf("\n");
}
static void default_print_chapter_header(WriterContext *wctx, const char *chapter)
{
if (wctx->nb_chapter)
printf("\n");
}
/* lame uppercasing routine, assumes the string is lower case ASCII */
static inline char *upcase_string(char *dst, size_t dst_size, const char *src)
{
int i;
for (i = 0; src[i] && i < dst_size-1; i++)
dst[i] = src[i]-32;
dst[i] = 0;
return dst;
}
static void default_print_section_header(WriterContext *wctx, const char *section)
{
char buf[32];
if (wctx->nb_section)
printf("\n");
printf("[%s]\n", upcase_string(buf, sizeof(buf), section));
}
static void default_print_section_footer(WriterContext *wctx, const char *section)
{
char buf[32];
printf("[/%s]", upcase_string(buf, sizeof(buf), section));
}
static void default_print_str(WriterContext *wctx, const char *key, const char *value)
{
printf("%s=%s\n", key, value);
}
static void default_print_int(WriterContext *wctx, const char *key, long long int value)
{
printf("%s=%lld\n", key, value);
}
static void default_show_tags(WriterContext *wctx, AVDictionary *dict)
{
AVDictionaryEntry *tag = NULL;
while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
printf("TAG:");
writer_print_string(wctx, tag->key, tag->value, 0);
}
}
static const Writer default_writer = {
.name = "default",
.print_footer = default_print_footer,
.print_chapter_header = default_print_chapter_header,
.print_section_header = default_print_section_header,
.print_section_footer = default_print_section_footer,
.print_integer = default_print_int,
.print_string = default_print_str,
.show_tags = default_show_tags,
.flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
};
/* Compact output */
/**
* Escape \n, \r, \\ and sep characters contained in s, and print the
* resulting string.
*/
static const char *c_escape_str(char **dst, size_t *dst_size,
const char *src, const char sep, void *log_ctx)
{
const char *p;
char *q;
size_t size = 1;
/* precompute size */
for (p = src; *p; p++, size++) {
ESCAPE_CHECK_SIZE(src, size, SIZE_MAX-2);
if (*p == '\n' || *p == '\r' || *p == '\\')
size++;
}
ESCAPE_REALLOC_BUF(dst_size, dst, src, size);
q = *dst;
for (p = src; *p; p++) {
switch (*src) {
case '\n': *q++ = '\\'; *q++ = 'n'; break;
case '\r': *q++ = '\\'; *q++ = 'r'; break;
case '\\': *q++ = '\\'; *q++ = '\\'; break;
default:
if (*p == sep)
*q++ = '\\';
*q++ = *p;
}
}
*q = 0;
return *dst;
}
/**
* Quote fields containing special characters, check RFC4180.
*/
static const char *csv_escape_str(char **dst, size_t *dst_size,
const char *src, const char sep, void *log_ctx)
{
const char *p;
char *q;
size_t size = 1;
int quote = 0;
/* precompute size */
for (p = src; *p; p++, size++) {
ESCAPE_CHECK_SIZE(src, size, SIZE_MAX-4);
if (*p == '"' || *p == sep || *p == '\n' || *p == '\r')
if (!quote) {
quote = 1;
size += 2;
}
if (*p == '"')
size++;
}
ESCAPE_REALLOC_BUF(dst_size, dst, src, size);
q = *dst;
p = src;
if (quote)
*q++ = '\"';
while (*p) {
if (*p == '"')
*q++ = '\"';
*q++ = *p++;
}
if (quote)
*q++ = '\"';
*q = 0;
return *dst;
}
static const char *none_escape_str(char **dst, size_t *dst_size,
const char *src, const char sep, void *log_ctx)
{
return src;
}
typedef struct CompactContext {
const AVClass *class;
char *item_sep_str;
char item_sep;
int nokey;
char *buf;
size_t buf_size;
char *escape_mode_str;
const char * (*escape_str)(char **dst, size_t *dst_size,
const char *src, const char sep, void *log_ctx);
} CompactContext;
#define OFFSET(x) offsetof(CompactContext, x)
static const AVOption compact_options[]= {
{"item_sep", "set item separator", OFFSET(item_sep_str), AV_OPT_TYPE_STRING, {.str="|"}, CHAR_MIN, CHAR_MAX },
{"s", "set item separator", OFFSET(item_sep_str), AV_OPT_TYPE_STRING, {.str="|"}, CHAR_MIN, CHAR_MAX },
{"nokey", "force no key printing", OFFSET(nokey), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
{"nk", "force no key printing", OFFSET(nokey), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
{"escape", "set escape mode", OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"}, CHAR_MIN, CHAR_MAX },
{"e", "set escape mode", OFFSET(escape_mode_str), AV_OPT_TYPE_STRING, {.str="c"}, CHAR_MIN, CHAR_MAX },
{NULL},
};
static const char *compact_get_name(void *ctx)
{
return "compact";
}
static const AVClass compact_class = {
"CompactContext",
compact_get_name,
compact_options
};
static av_cold int compact_init(WriterContext *wctx, const char *args, void *opaque)
{
CompactContext *compact = wctx->priv;
int err;
compact->class = &compact_class;
av_opt_set_defaults(compact);
if (args &&
(err = (av_set_options_string(compact, args, "=", ":"))) < 0) {
av_log(wctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
return err;
}
if (strlen(compact->item_sep_str) != 1) {
av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
compact->item_sep_str);
return AVERROR(EINVAL);
}
compact->item_sep = compact->item_sep_str[0];
compact->buf_size = ESCAPE_INIT_BUF_SIZE;
if (!(compact->buf = av_malloc(compact->buf_size)))
return AVERROR(ENOMEM);
if (!strcmp(compact->escape_mode_str, "none")) compact->escape_str = none_escape_str;
else if (!strcmp(compact->escape_mode_str, "c" )) compact->escape_str = c_escape_str;
else if (!strcmp(compact->escape_mode_str, "csv" )) compact->escape_str = csv_escape_str;
else {
av_log(wctx, AV_LOG_ERROR, "Unknown escape mode '%s'\n", compact->escape_mode_str);
return AVERROR(EINVAL);
}
return 0;
}
static av_cold void compact_uninit(WriterContext *wctx)
{
CompactContext *compact = wctx->priv;
av_freep(&compact->item_sep_str);
av_freep(&compact->buf);
av_freep(&compact->escape_mode_str);
}
static void compact_print_section_header(WriterContext *wctx, const char *section)
{
CompactContext *compact = wctx->priv;
printf("%s%c", section, compact->item_sep);
}
static void compact_print_section_footer(WriterContext *wctx, const char *section)
{
printf("\n");
}
static void compact_print_str(WriterContext *wctx, const char *key, const char *value)
{
CompactContext *compact = wctx->priv;
if (wctx->nb_item) printf("%c", compact->item_sep);
if (!compact->nokey)
printf("%s=", key);
printf("%s", compact->escape_str(&compact->buf, &compact->buf_size,
value, compact->item_sep, wctx));
}
static void compact_print_int(WriterContext *wctx, const char *key, long long int value)
{
CompactContext *compact = wctx->priv;
if (wctx->nb_item) printf("%c", compact->item_sep);
if (!compact->nokey)
printf("%s=", key);
printf("%lld", value);
}
static void compact_show_tags(WriterContext *wctx, AVDictionary *dict)
{
CompactContext *compact = wctx->priv;
AVDictionaryEntry *tag = NULL;
while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
if (wctx->nb_item) printf("%c", compact->item_sep);
if (!compact->nokey)
printf("tag:%s=", compact->escape_str(&compact->buf, &compact->buf_size,
tag->key, compact->item_sep, wctx));
printf("%s", compact->escape_str(&compact->buf, &compact->buf_size,
tag->value, compact->item_sep, wctx));
}
}
static const Writer compact_writer = {
.name = "compact",
.priv_size = sizeof(CompactContext),
.init = compact_init,
.uninit = compact_uninit,
.print_section_header = compact_print_section_header,
.print_section_footer = compact_print_section_footer,
.print_integer = compact_print_int,
.print_string = compact_print_str,
.show_tags = compact_show_tags,
.flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
};
/* CSV output */
static av_cold int csv_init(WriterContext *wctx, const char *args, void *opaque)
{
return compact_init(wctx, "item_sep=,:nokey=1:escape=csv", opaque);
}
static const Writer csv_writer = {
.name = "csv",
.priv_size = sizeof(CompactContext),
.init = csv_init,
.uninit = compact_uninit,
.print_section_header = compact_print_section_header,
.print_section_footer = compact_print_section_footer,
.print_integer = compact_print_int,
.print_string = compact_print_str,
.show_tags = compact_show_tags,
.flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS,
};
/* JSON output */
typedef struct {
int multiple_entries; ///< tells if the given chapter requires multiple entries
char *buf;
size_t buf_size;
int print_packets_and_frames;
int indent_level;
} JSONContext;
static av_cold int json_init(WriterContext *wctx, const char *args, void *opaque)
{
JSONContext *json = wctx->priv;
json->buf_size = ESCAPE_INIT_BUF_SIZE;
if (!(json->buf = av_malloc(json->buf_size)))
return AVERROR(ENOMEM);
return 0;
}
static av_cold void json_uninit(WriterContext *wctx)
{
JSONContext *json = wctx->priv;
av_freep(&json->buf);
}
static const char *json_escape_str(char **dst, size_t *dst_size, const char *src,
void *log_ctx)
{
static const char json_escape[] = {'"', '\\', '\b', '\f', '\n', '\r', '\t', 0};
static const char json_subst[] = {'"', '\\', 'b', 'f', 'n', 'r', 't', 0};
const char *p;
char *q;
size_t size = 1;
// compute the length of the escaped string
for (p = src; *p; p++) {
ESCAPE_CHECK_SIZE(src, size, SIZE_MAX-6);
if (strchr(json_escape, *p)) size += 2; // simple escape
else if ((unsigned char)*p < 32) size += 6; // handle non-printable chars
else size += 1; // char copy
}
ESCAPE_REALLOC_BUF(dst_size, dst, src, size);
q = *dst;
for (p = src; *p; p++) {
char *s = strchr(json_escape, *p);
if (s) {
*q++ = '\\';
*q++ = json_subst[s - json_escape];
} else if ((unsigned char)*p < 32) {
snprintf(q, 7, "\\u00%02x", *p & 0xff);
q += 6;
} else {
*q++ = *p;
}
}
*q = 0;
return *dst;
}
static void json_print_header(WriterContext *wctx)
{
JSONContext *json = wctx->priv;
printf("{");
json->indent_level++;
}
static void json_print_footer(WriterContext *wctx)
{
JSONContext *json = wctx->priv;
json->indent_level--;
printf("\n}\n");
}
#define JSON_INDENT() printf("%*c", json->indent_level * 4, ' ')
static void json_print_chapter_header(WriterContext *wctx, const char *chapter)
{
JSONContext *json = wctx->priv;
if (wctx->nb_chapter)
printf(",");
printf("\n");
json->multiple_entries = !strcmp(chapter, "packets") || !strcmp(chapter, "frames" ) ||
!strcmp(chapter, "packets_and_frames") ||
!strcmp(chapter, "streams");
if (json->multiple_entries) {
JSON_INDENT();
printf("\"%s\": [\n", json_escape_str(&json->buf, &json->buf_size, chapter, wctx));
json->print_packets_and_frames = !strcmp(chapter, "packets_and_frames");
json->indent_level++;
}
}
static void json_print_chapter_footer(WriterContext *wctx, const char *chapter)
{
JSONContext *json = wctx->priv;
if (json->multiple_entries) {
printf("\n");
json->indent_level--;
JSON_INDENT();
printf("]");
}
}
static void json_print_section_header(WriterContext *wctx, const char *section)
{
JSONContext *json = wctx->priv;
if (wctx->nb_section)
printf(",\n");
JSON_INDENT();
if (!json->multiple_entries)
printf("\"%s\": ", section);
printf("{\n");
json->indent_level++;
/* this is required so the parser can distinguish between packets and frames */
if (json->print_packets_and_frames) {
JSON_INDENT(); printf("\"type\": \"%s\",\n", section);
}
}
static void json_print_section_footer(WriterContext *wctx, const char *section)
{
JSONContext *json = wctx->priv;
printf("\n");
json->indent_level--;
JSON_INDENT(); printf("}");
}
static inline void json_print_item_str(WriterContext *wctx,
const char *key, const char *value)
{
JSONContext *json = wctx->priv;
JSON_INDENT();
printf("\"%s\":", json_escape_str(&json->buf, &json->buf_size, key, wctx));
printf(" \"%s\"", json_escape_str(&json->buf, &json->buf_size, value, wctx));
}
static void json_print_str(WriterContext *wctx, const char *key, const char *value)
{
if (wctx->nb_item) printf(",\n");
json_print_item_str(wctx, key, value);
}
static void json_print_int(WriterContext *wctx, const char *key, long long int value)
{
JSONContext *json = wctx->priv;
if (wctx->nb_item) printf(",\n");
JSON_INDENT();
printf("\"%s\": %lld",
json_escape_str(&json->buf, &json->buf_size, key, wctx), value);
}
static void json_show_tags(WriterContext *wctx, AVDictionary *dict)
{
JSONContext *json = wctx->priv;
AVDictionaryEntry *tag = NULL;
int is_first = 1;
if (!dict)
return;
printf(",\n"); JSON_INDENT(); printf("\"tags\": {\n");
json->indent_level++;
while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
if (is_first) is_first = 0;
else printf(",\n");
json_print_item_str(wctx, tag->key, tag->value);
}
json->indent_level--;
printf("\n"); JSON_INDENT(); printf("}");
}
static const Writer json_writer = {
.name = "json",
.priv_size = sizeof(JSONContext),
.init = json_init,
.uninit = json_uninit,
.print_header = json_print_header,
.print_footer = json_print_footer,
.print_chapter_header = json_print_chapter_header,
.print_chapter_footer = json_print_chapter_footer,
.print_section_header = json_print_section_header,
.print_section_footer = json_print_section_footer,
.print_integer = json_print_int,
.print_string = json_print_str,
.show_tags = json_show_tags,
.flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
};
/* XML output */
typedef struct {
const AVClass *class;
int within_tag;
int multiple_entries; ///< tells if the given chapter requires multiple entries
int indent_level;
int fully_qualified;
int xsd_strict;
char *buf;
size_t buf_size;
} XMLContext;
#undef OFFSET
#define OFFSET(x) offsetof(XMLContext, x)
static const AVOption xml_options[] = {
{"fully_qualified", "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
{"q", "specify if the output should be fully qualified", OFFSET(fully_qualified), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
{"xsd_strict", "ensure that the output is XSD compliant", OFFSET(xsd_strict), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
{"x", "ensure that the output is XSD compliant", OFFSET(xsd_strict), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
{NULL},
};
static const char *xml_get_name(void *ctx)
{
return "xml";
}
static const AVClass xml_class = {
"XMLContext",
xml_get_name,
xml_options
};
static av_cold int xml_init(WriterContext *wctx, const char *args, void *opaque)
{
XMLContext *xml = wctx->priv;
int err;
xml->class = &xml_class;
av_opt_set_defaults(xml);
if (args &&
(err = (av_set_options_string(xml, args, "=", ":"))) < 0) {
av_log(wctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
return err;
}
if (xml->xsd_strict) {
xml->fully_qualified = 1;
#define CHECK_COMPLIANCE(opt, opt_name) \
if (opt) { \
av_log(wctx, AV_LOG_ERROR, \
"XSD-compliant output selected but option '%s' was selected, XML output may be non-compliant.\n" \
"You need to disable such option with '-no%s'\n", opt_name, opt_name); \
return AVERROR(EINVAL); \
}
CHECK_COMPLIANCE(show_private_data, "private");
CHECK_COMPLIANCE(show_value_unit, "unit");
CHECK_COMPLIANCE(use_value_prefix, "prefix");
if (do_show_frames && do_show_packets) {
av_log(wctx, AV_LOG_ERROR,
"Interleaved frames and packets are not allowed in XSD. "
"Select only one between the -show_frames and the -show_packets options.\n");
return AVERROR(EINVAL);
}
}
xml->buf_size = ESCAPE_INIT_BUF_SIZE;
if (!(xml->buf = av_malloc(xml->buf_size)))
return AVERROR(ENOMEM);
return 0;
}
static av_cold void xml_uninit(WriterContext *wctx)
{
XMLContext *xml = wctx->priv;
av_freep(&xml->buf);
}
static const char *xml_escape_str(char **dst, size_t *dst_size, const char *src,
void *log_ctx)
{
const char *p;
char *q;
size_t size = 1;
/* precompute size */
for (p = src; *p; p++, size++) {
ESCAPE_CHECK_SIZE(src, size, SIZE_MAX-10);
switch (*p) {
case '&' : size += strlen("&amp;"); break;
case '<' : size += strlen("&lt;"); break;
case '>' : size += strlen("&gt;"); break;
case '\"': size += strlen("&quot;"); break;
case '\'': size += strlen("&apos;"); break;
default: size++;
}
}
ESCAPE_REALLOC_BUF(dst_size, dst, src, size);
#define COPY_STR(str) { \
const char *s = str; \
while (*s) \
*q++ = *s++; \
}
p = src;
q = *dst;
while (*p) {
switch (*p) {
case '&' : COPY_STR("&amp;"); break;
case '<' : COPY_STR("&lt;"); break;
case '>' : COPY_STR("&gt;"); break;
case '\"': COPY_STR("&quot;"); break;
case '\'': COPY_STR("&apos;"); break;
default: *q++ = *p;
}
p++;
}
*q = 0;
return *dst;
}
static void xml_print_header(WriterContext *wctx)
{
XMLContext *xml = wctx->priv;
const char *qual = " xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' "
"xmlns:ffprobe='http://www.ffmpeg.org/schema/ffprobe' "
"xsi:schemaLocation='http://www.ffmpeg.org/schema/ffprobe ffprobe.xsd'";
printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
printf("<%sffprobe%s>\n",
xml->fully_qualified ? "ffprobe:" : "",
xml->fully_qualified ? qual : "");
xml->indent_level++;
}
static void xml_print_footer(WriterContext *wctx)
{
XMLContext *xml = wctx->priv;
xml->indent_level--;
printf("</%sffprobe>\n", xml->fully_qualified ? "ffprobe:" : "");
}
#define XML_INDENT() printf("%*c", xml->indent_level * 4, ' ')
static void xml_print_chapter_header(WriterContext *wctx, const char *chapter)
{
XMLContext *xml = wctx->priv;
if (wctx->nb_chapter)
printf("\n");
xml->multiple_entries = !strcmp(chapter, "packets") || !strcmp(chapter, "frames") ||
!strcmp(chapter, "packets_and_frames") ||
!strcmp(chapter, "streams");
if (xml->multiple_entries) {
XML_INDENT(); printf("<%s>\n", chapter);
xml->indent_level++;
}
}
static void xml_print_chapter_footer(WriterContext *wctx, const char *chapter)
{
XMLContext *xml = wctx->priv;
if (xml->multiple_entries) {
xml->indent_level--;
XML_INDENT(); printf("</%s>\n", chapter);
}
}
static void xml_print_section_header(WriterContext *wctx, const char *section)
{
XMLContext *xml = wctx->priv;
XML_INDENT(); printf("<%s ", section);
xml->within_tag = 1;
}
static void xml_print_section_footer(WriterContext *wctx, const char *section)
{
XMLContext *xml = wctx->priv;
if (xml->within_tag)
printf("/>\n");
else {
XML_INDENT(); printf("</%s>\n", section);
}
}
static void xml_print_str(WriterContext *wctx, const char *key, const char *value)
{
XMLContext *xml = wctx->priv;
if (wctx->nb_item)
printf(" ");
printf("%s=\"%s\"", key, xml_escape_str(&xml->buf, &xml->buf_size, value, wctx));
}
static void xml_print_int(WriterContext *wctx, const char *key, long long int value)
{
if (wctx->nb_item)
printf(" ");
printf("%s=\"%lld\"", key, value);
}
static void xml_show_tags(WriterContext *wctx, AVDictionary *dict)
{
XMLContext *xml = wctx->priv;
AVDictionaryEntry *tag = NULL;
int is_first = 1;
xml->indent_level++;
while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
if (is_first) {
/* close section tag */
printf(">\n");
xml->within_tag = 0;
is_first = 0;
}
XML_INDENT();
printf("<tag key=\"%s\"",
xml_escape_str(&xml->buf, &xml->buf_size, tag->key, wctx));
printf(" value=\"%s\"/>\n",
xml_escape_str(&xml->buf, &xml->buf_size, tag->value, wctx));
}
xml->indent_level--;
}
static Writer xml_writer = {
.name = "xml",
.priv_size = sizeof(XMLContext),
.init = xml_init,
.uninit = xml_uninit,
.print_header = xml_print_header,
.print_footer = xml_print_footer,
.print_chapter_header = xml_print_chapter_header,
.print_chapter_footer = xml_print_chapter_footer,
.print_section_header = xml_print_section_header,
.print_section_footer = xml_print_section_footer,
.print_integer = xml_print_int,
.print_string = xml_print_str,
.show_tags = xml_show_tags,
.flags = WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
};
static void writer_register_all(void)
{
static int initialized;
if (initialized)
return;
initialized = 1;
writer_register(&default_writer);
writer_register(&compact_writer);
writer_register(&csv_writer);
writer_register(&json_writer);
writer_register(&xml_writer);
}
#define print_fmt(k, f, ...) do { \
if (fast_asprintf(&pbuf, f, __VA_ARGS__)) \
writer_print_string(w, k, pbuf.s, 0); \
} while (0)
#define print_fmt_opt(k, f, ...) do { \
if (fast_asprintf(&pbuf, f, __VA_ARGS__)) \
writer_print_string(w, k, pbuf.s, 1); \
} while (0)
#define print_int(k, v) writer_print_integer(w, k, v)
#define print_str(k, v) writer_print_string(w, k, v, 0)
#define print_str_opt(k, v) writer_print_string(w, k, v, 1)
#define print_time(k, v, tb) writer_print_time(w, k, v, tb)
#define print_ts(k, v) writer_print_ts(w, k, v)
#define print_val(k, v, u) writer_print_string(w, k, \
value_string(val_str, sizeof(val_str), (struct unit_value){.val.i = v, .unit=u}), 0)
#define print_section_header(s) writer_print_section_header(w, s)
#define print_section_footer(s) writer_print_section_footer(w, s)
#define show_tags(metadata) writer_show_tags(w, metadata)
static void show_packet(WriterContext *w, AVFormatContext *fmt_ctx, AVPacket *pkt, int packet_idx)
{
char val_str[128];
AVStream *st = fmt_ctx->streams[pkt->stream_index];
struct print_buf pbuf = {.s = NULL};
const char *s;
print_section_header("packet");
s = av_get_media_type_string(st->codec->codec_type);
if (s) print_str ("codec_type", s);
else print_str_opt("codec_type", "unknown");
print_int("stream_index", pkt->stream_index);
print_ts ("pts", pkt->pts);
print_time("pts_time", pkt->pts, &st->time_base);
print_ts ("dts", pkt->dts);
print_time("dts_time", pkt->dts, &st->time_base);
print_ts ("duration", pkt->duration);
print_time("duration_time", pkt->duration, &st->time_base);
print_val("size", pkt->size, unit_byte_str);
if (pkt->pos != -1) print_fmt ("pos", "%"PRId64, pkt->pos);
else print_str_opt("pos", "N/A");
print_fmt("flags", "%c", pkt->flags & AV_PKT_FLAG_KEY ? 'K' : '_');
print_section_footer("packet");
av_free(pbuf.s);
fflush(stdout);
}
static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream)
{
struct print_buf pbuf = {.s = NULL};
const char *s;
print_section_header("frame");
print_str("media_type", "video");
print_int("width", frame->width);
print_int("height", frame->height);
s = av_get_pix_fmt_name(frame->format);
if (s) print_str ("pix_fmt", s);
else print_str_opt("pix_fmt", "unknown");
if (frame->sample_aspect_ratio.num) {
print_fmt("sample_aspect_ratio", "%d:%d",
frame->sample_aspect_ratio.num,
frame->sample_aspect_ratio.den);
} else {
print_str_opt("sample_aspect_ratio", "N/A");
}
print_fmt("pict_type", "%c", av_get_picture_type_char(frame->pict_type));
print_int("coded_picture_number", frame->coded_picture_number);
print_int("display_picture_number", frame->display_picture_number);
print_int("interlaced_frame", frame->interlaced_frame);
print_int("top_field_first", frame->top_field_first);
print_int("repeat_pict", frame->repeat_pict);
print_int("reference", frame->reference);
print_int("key_frame", frame->key_frame);
print_ts ("pkt_pts", frame->pkt_pts);
print_time("pkt_pts_time", frame->pkt_pts, &stream->time_base);
print_ts ("pkt_dts", frame->pkt_dts);
print_time("pkt_dts_time", frame->pkt_dts, &stream->time_base);
if (frame->pkt_pos != -1) print_fmt ("pkt_pos", "%"PRId64, frame->pkt_pos);
else print_str_opt("pkt_pos", "N/A");
print_section_footer("frame");
av_free(pbuf.s);
fflush(stdout);
}
static av_always_inline int get_video_frame(AVFormatContext *fmt_ctx,
AVFrame *frame, AVPacket *pkt)
{
AVCodecContext *dec_ctx = fmt_ctx->streams[pkt->stream_index]->codec;
int got_picture = 0;
if (dec_ctx->codec_id != CODEC_ID_NONE &&
dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
avcodec_decode_video2(dec_ctx, frame, &got_picture, pkt);
return got_picture;
}
static void show_packets(WriterContext *w, AVFormatContext *fmt_ctx)
{
AVPacket pkt;
AVFrame frame;
int i = 0;
av_init_packet(&pkt);
while (!av_read_frame(fmt_ctx, &pkt)) {
if (do_show_packets)
show_packet(w, fmt_ctx, &pkt, i++);
if (do_show_frames &&
get_video_frame(fmt_ctx, &frame, &pkt)) {
show_frame(w, &frame, fmt_ctx->streams[pkt.stream_index]);
av_destruct_packet(&pkt);
}
}
av_init_packet(&pkt);
pkt.data = NULL;
pkt.size = 0;
//Flush remaining frames that are cached in the decoder
for (i = 0; i < fmt_ctx->nb_streams; i++) {
pkt.stream_index = i;
while (get_video_frame(fmt_ctx, &frame, &pkt))
show_frame(w, &frame, fmt_ctx->streams[pkt.stream_index]);
}
}
static void show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_idx)
{
AVStream *stream = fmt_ctx->streams[stream_idx];
AVCodecContext *dec_ctx;
AVCodec *dec;
char val_str[128];
const char *s;
AVRational display_aspect_ratio;
struct print_buf pbuf = {.s = NULL};
print_section_header("stream");
print_int("index", stream->index);
if ((dec_ctx = stream->codec)) {
if ((dec = dec_ctx->codec)) {
print_str("codec_name", dec->name);
print_str("codec_long_name", dec->long_name);
} else {
print_str_opt("codec_name", "unknown");
print_str_opt("codec_long_name", "unknown");
}
s = av_get_media_type_string(dec_ctx->codec_type);
if (s) print_str ("codec_type", s);
else print_str_opt("codec_type", "unknown");
print_fmt("codec_time_base", "%d/%d", dec_ctx->time_base.num, dec_ctx->time_base.den);
/* print AVI/FourCC tag */
av_get_codec_tag_string(val_str, sizeof(val_str), dec_ctx->codec_tag);
print_str("codec_tag_string", val_str);
print_fmt("codec_tag", "0x%04x", dec_ctx->codec_tag);
switch (dec_ctx->codec_type) {
case AVMEDIA_TYPE_VIDEO:
print_int("width", dec_ctx->width);
print_int("height", dec_ctx->height);
print_int("has_b_frames", dec_ctx->has_b_frames);
if (dec_ctx->sample_aspect_ratio.num) {
print_fmt("sample_aspect_ratio", "%d:%d",
dec_ctx->sample_aspect_ratio.num,
dec_ctx->sample_aspect_ratio.den);
av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
dec_ctx->width * dec_ctx->sample_aspect_ratio.num,
dec_ctx->height * dec_ctx->sample_aspect_ratio.den,
1024*1024);
print_fmt("display_aspect_ratio", "%d:%d",
display_aspect_ratio.num,
display_aspect_ratio.den);
} else {
print_str_opt("sample_aspect_ratio", "N/A");
print_str_opt("display_aspect_ratio", "N/A");
}
s = av_get_pix_fmt_name(dec_ctx->pix_fmt);
if (s) print_str ("pix_fmt", s);
else print_str_opt("pix_fmt", "unknown");
print_int("level", dec_ctx->level);
if (dec_ctx->timecode_frame_start >= 0) {
uint32_t tc = dec_ctx->timecode_frame_start;
print_fmt("timecode", "%02d:%02d:%02d%c%02d",
tc>>19 & 0x1f, // hours
tc>>13 & 0x3f, // minutes
tc>>6 & 0x3f, // seconds
tc & 1<<24 ? ';' : ':', // drop
tc & 0x3f); // frames
} else {
print_str_opt("timecode", "N/A");
}
break;
case AVMEDIA_TYPE_AUDIO:
s = av_get_sample_fmt_name(dec_ctx->sample_fmt);
if (s) print_str ("sample_fmt", s);
else print_str_opt("sample_fmt", "unknown");
print_val("sample_rate", dec_ctx->sample_rate, unit_hertz_str);
print_int("channels", dec_ctx->channels);
print_int("bits_per_sample", av_get_bits_per_sample(dec_ctx->codec_id));
break;
}
} else {
print_str_opt("codec_type", "unknown");
}
if (dec_ctx->codec && dec_ctx->codec->priv_class && show_private_data) {
const AVOption *opt = NULL;
while (opt = av_opt_next(dec_ctx->priv_data,opt)) {
uint8_t *str;
if (opt->flags) continue;
if (av_opt_get(dec_ctx->priv_data, opt->name, 0, &str) >= 0) {
print_str(opt->name, str);
av_free(str);
}
}
}
if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS) print_fmt ("id", "0x%x", stream->id);
else print_str_opt("id", "N/A");
print_fmt("r_frame_rate", "%d/%d", stream->r_frame_rate.num, stream->r_frame_rate.den);
print_fmt("avg_frame_rate", "%d/%d", stream->avg_frame_rate.num, stream->avg_frame_rate.den);
print_fmt("time_base", "%d/%d", stream->time_base.num, stream->time_base.den);
print_time("start_time", stream->start_time, &stream->time_base);
print_time("duration", stream->duration, &stream->time_base);
if (stream->nb_frames) print_fmt ("nb_frames", "%"PRId64, stream->nb_frames);
else print_str_opt("nb_frames", "N/A");
show_tags(stream->metadata);
print_section_footer("stream");
av_free(pbuf.s);
fflush(stdout);
}
static void show_streams(WriterContext *w, AVFormatContext *fmt_ctx)
{
int i;
for (i = 0; i < fmt_ctx->nb_streams; i++)
show_stream(w, fmt_ctx, i);
}
static void show_format(WriterContext *w, AVFormatContext *fmt_ctx)
{
char val_str[128];
int64_t size = avio_size(fmt_ctx->pb);
print_section_header("format");
print_str("filename", fmt_ctx->filename);
print_int("nb_streams", fmt_ctx->nb_streams);
print_str("format_name", fmt_ctx->iformat->name);
print_str("format_long_name", fmt_ctx->iformat->long_name);
print_time("start_time", fmt_ctx->start_time, &AV_TIME_BASE_Q);
print_time("duration", fmt_ctx->duration, &AV_TIME_BASE_Q);
if (size >= 0) print_val ("size", size, unit_byte_str);
else print_str_opt("size", "N/A");
if (fmt_ctx->bit_rate > 0) print_val ("bit_rate", fmt_ctx->bit_rate, unit_bit_per_second_str);
else print_str_opt("bit_rate", "N/A");
show_tags(fmt_ctx->metadata);
print_section_footer("format");
fflush(stdout);
}
static void show_error(WriterContext *w, int err)
{
char errbuf[128];
const char *errbuf_ptr = errbuf;
if (av_strerror(err, errbuf, sizeof(errbuf)) < 0)
errbuf_ptr = strerror(AVUNERROR(err));
writer_print_chapter_header(w, "error");
print_section_header("error");
print_int("code", err);
print_str("string", errbuf_ptr);
print_section_footer("error");
writer_print_chapter_footer(w, "error");
}
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 (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
av_log(NULL, AV_LOG_ERROR, "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) {
av_log(NULL, AV_LOG_ERROR, "Error while opening codec for input stream %d\n",
stream->index);
}
}
*fmt_ctx_ptr = fmt_ctx;
return 0;
}
#define PRINT_CHAPTER(name) do { \
if (do_show_ ## name) { \
writer_print_chapter_header(wctx, #name); \
show_ ## name (wctx, fmt_ctx); \
writer_print_chapter_footer(wctx, #name); \
} \
} while (0)
static int probe_file(WriterContext *wctx, const char *filename)
{
AVFormatContext *fmt_ctx;
int ret, i;
ret = open_input_file(&fmt_ctx, filename);
if (ret >= 0) {
if (do_show_packets || do_show_frames) {
const char *chapter;
if (do_show_frames && do_show_packets &&
wctx->writer->flags & WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER)
chapter = "packets_and_frames";
else if (do_show_packets && !do_show_frames)
chapter = "packets";
else // (!do_show_packets && do_show_frames)
chapter = "frames";
writer_print_chapter_header(wctx, chapter);
show_packets(wctx, fmt_ctx);
writer_print_chapter_footer(wctx, chapter);
}
PRINT_CHAPTER(streams);
PRINT_CHAPTER(format);
for (i = 0; i < fmt_ctx->nb_streams; i++)
if (fmt_ctx->streams[i]->codec->codec_id != CODEC_ID_NONE)
avcodec_close(fmt_ctx->streams[i]->codec);
avformat_close_input(&fmt_ctx);
}
return ret;
}
static void show_usage(void)
{
av_log(NULL, AV_LOG_INFO, "Simple multimedia streams analyzer\n");
av_log(NULL, AV_LOG_INFO, "usage: %s [OPTIONS] [INPUT_FILE]\n", program_name);
av_log(NULL, AV_LOG_INFO, "\n");
}
static int opt_format(const char *opt, const char *arg)
{
iformat = av_find_input_format(arg);
if (!iformat) {
av_log(NULL, AV_LOG_ERROR, "Unknown input format: %s\n", arg);
return AVERROR(EINVAL);
}
return 0;
}
static void opt_input_file(void *optctx, const char *arg)
{
if (input_filename) {
av_log(NULL, AV_LOG_ERROR, "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;
}
static int opt_help(const char *opt, const char *arg)
{
av_log_set_callback(log_callback_help);
show_usage();
show_help_options(options, "Main options:\n", 0, 0);
printf("\n");
show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
return 0;
}
static int opt_pretty(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 options[] = {
#include "cmdutils_common_opts.h"
{ "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
{ "unit", OPT_BOOL, {(void*)&show_value_unit}, "show unit of the displayed values" },
{ "prefix", OPT_BOOL, {(void*)&use_value_prefix}, "use SI prefixes for the displayed values" },
{ "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
"use binary prefixes for byte units" },
{ "sexagesimal", OPT_BOOL, {(void*)&use_value_sexagesimal_format},
"use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
{ "pretty", 0, {(void*)&opt_pretty},
"prettify the format of displayed values, make it more human readable" },
{ "print_format", OPT_STRING | HAS_ARG, {(void*)&print_format},
"set the output printing format (available formats are: default, compact, csv, json, xml)", "format" },
{ "show_error", OPT_BOOL, {(void*)&do_show_error} , "show probing error" },
{ "show_format", OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
{ "show_frames", OPT_BOOL, {(void*)&do_show_frames} , "show frames info" },
{ "show_packets", OPT_BOOL, {(void*)&do_show_packets}, "show packets info" },
{ "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info" },
{ "show_private_data", OPT_BOOL, {(void*)&show_private_data}, "show private data" },
{ "private", OPT_BOOL, {(void*)&show_private_data}, "same as show_private_data" },
{ "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
{ "i", HAS_ARG, {(void *)opt_input_file}, "read specified file", "input_file"},
{ NULL, },
};
int main(int argc, char **argv)
{
const Writer *w;
WriterContext *wctx;
char *buf;
char *w_name = NULL, *w_args = NULL;
int ret;
parse_loglevel(argc, argv, options);
av_register_all();
avformat_network_init();
init_opts();
#if CONFIG_AVDEVICE
avdevice_register_all();
#endif
show_banner(argc, argv, options);
parse_options(NULL, argc, argv, options, opt_input_file);
writer_register_all();
if (!print_format)
print_format = av_strdup("default");
w_name = av_strtok(print_format, "=", &buf);
w_args = buf;
w = writer_get_by_name(w_name);
if (!w) {
av_log(NULL, AV_LOG_ERROR, "Unknown output format with name '%s'\n", w_name);
ret = AVERROR(EINVAL);
goto end;
}
if ((ret = writer_open(&wctx, w, w_args, NULL)) >= 0) {
writer_print_header(wctx);
if (!input_filename) {
show_usage();
av_log(NULL, AV_LOG_ERROR, "You have to specify one input file.\n");
av_log(NULL, AV_LOG_ERROR, "Use -h to get full help or, even better, run 'man %s'.\n", program_name);
ret = AVERROR(EINVAL);
} else {
ret = probe_file(wctx, input_filename);
if (ret < 0 && do_show_error)
show_error(wctx, ret);
}
writer_print_footer(wctx);
writer_close(&wctx);
}
end:
av_freep(&print_format);
avformat_network_deinit();
return ret;
}
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