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ffprobe.c
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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 "version.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 "libavutil/timecode.h"
#include "libavdevice/avdevice.h"
#include "libswscale/swscale.h"
#include "libswresample/swresample.h"
#include "libpostproc/postprocess.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 do_show_program_version = 0;
static int do_show_library_versions = 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; long long 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 {
const char *prefix_string = "";
int l;
if (use_value_prefix && vald > 1) {
long long int index;
if (uv.unit == unit_byte_str && use_byte_value_binary_prefix) {
index = (long long 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 = (long long 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 || (use_value_prefix && vald != (long long int)vald))
l = snprintf(buf, buf_size, "%f", vald);
else
l = snprintf(buf, buf_size, "%lld", (long long int)vald);
snprintf(buf+l, buf_size-l, "%s%s%s", *prefix_string || show_value_unit ? " " : "",
prefix_string, 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] = av_toupper(src[i]);
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 {
const AVClass *class;
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;
int compact;
const char *item_sep, *item_start_end;
} JSONContext;
#undef OFFSET
#define OFFSET(x) offsetof(JSONContext, x)
static const AVOption json_options[]= {
{ "compact", "enable compact output", OFFSET(compact), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
{ "c", "enable compact output", OFFSET(compact), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
{ NULL }
};
static const char *json_get_name(void *ctx)
{
return "json";
}
static const AVClass json_class = {
"JSONContext",
json_get_name,
json_options
};
static av_cold int json_init(WriterContext *wctx, const char *args, void *opaque)
{
JSONContext *json = wctx->priv;
int err;
json->class = &json_class;
av_opt_set_defaults(json);
if (args &&
(err = (av_set_options_string(json, args, "=", ":"))) < 0) {
av_log(wctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
return err;
}
json->item_sep = json->compact ? ", " : ",\n";
json->item_start_end = json->compact ? " " : "\n";
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") || !strcmp(chapter, "library_versions");
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("{%s", json->item_start_end);
json->indent_level++;
/* this is required so the parser can distinguish between packets and frames */
if (json->print_packets_and_frames) {
if (!json->compact)
JSON_INDENT();
printf("\"type\": \"%s\"%s", section, json->item_sep);
}
}
static void json_print_section_footer(WriterContext *wctx, const char *section)
{
JSONContext *json = wctx->priv;
printf("%s", json->item_start_end);
json->indent_level--;
if (!json->compact)
JSON_INDENT();
printf("}");
}
static inline void json_print_item_str(WriterContext *wctx,
const char *key, const char *value)
{
JSONContext *json = wctx->priv;
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)
{
JSONContext *json = wctx->priv;
if (wctx->nb_item) printf("%s", json->item_sep);
if (!json->compact)
JSON_INDENT();
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("%s", json->item_sep);
if (!json->compact)
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("%s", json->item_sep);
if (!json->compact)
JSON_INDENT();
printf("\"tags\": {%s", json->item_start_end);
json->indent_level++;
while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
if (is_first) is_first = 0;
else printf("%s", json->item_sep);
if (!json->compact)
JSON_INDENT();
json_print_item_str(wctx, tag->key, tag->value);
}
json->indent_level--;
printf("%s", json->item_start_end);
if (!json->compact)
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",