forked from FFmpeg/FFmpeg
/
ffprobe.c
2213 lines (1885 loc) · 72.3 KB
/
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/bprint.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_count_frames = 0;
static int do_count_packets = 0;
static int do_read_frames = 0;
static int do_read_packets = 0;
static int do_show_error = 0;
static int do_show_format = 0;
static int do_show_frames = 0;
static AVDictionary *fmt_entries_to_show = NULL;
static int do_show_packets = 0;
static int do_show_streams = 0;
static int do_show_data = 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 *const binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
static const char *const 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";
static uint64_t *nb_streams_packets;
static uint64_t *nb_streams_frames;
void av_noreturn exit_program(int ret)
{
av_dict_free(&fmt_entries_to_show);
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_rational) (WriterContext *wctx, AVRational *q, char *sep);
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_section_packet; ///< number of the packet section in case we are in "packets_and_frames" section
unsigned int nb_section_frame; ///< number of the frame section in case we are in "packets_and_frames" section
unsigned int nb_section_packet_frame; ///< nb_section_packet or nb_section_frame according if is_packets_and_frames
unsigned int nb_chapter; ///< number of the chapter, starting at 0
int multiple_sections; ///< tells if the current chapter can contain multiple sections
int is_fmt_chapter; ///< tells if the current chapter is "format", required by the print_format_entry option
int is_packets_and_frames; ///< tells if the current section is "packets_and_frames"
};
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)
{
wctx->nb_section =
wctx->nb_section_packet = wctx->nb_section_frame =
wctx->nb_section_packet_frame = 0;
wctx->is_packets_and_frames = !strcmp(chapter, "packets_and_frames");
wctx->multiple_sections = !strcmp(chapter, "packets") || !strcmp(chapter, "frames" ) ||
wctx->is_packets_and_frames ||
!strcmp(chapter, "streams") || !strcmp(chapter, "library_versions");
wctx->is_fmt_chapter = !strcmp(chapter, "format");
if (wctx->writer->print_chapter_header)
wctx->writer->print_chapter_header(wctx, chapter);
}
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->is_packets_and_frames)
wctx->nb_section_packet_frame = !strcmp(section, "packet") ? wctx->nb_section_packet
: wctx->nb_section_frame;
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);
if (wctx->is_packets_and_frames) {
if (!strcmp(section, "packet")) wctx->nb_section_packet++;
else wctx->nb_section_frame++;
}
wctx->nb_section++;
}
static inline void writer_print_integer(WriterContext *wctx,
const char *key, long long int val)
{
if (!wctx->is_fmt_chapter || !fmt_entries_to_show || av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
wctx->writer->print_integer(wctx, key, val);
wctx->nb_item++;
}
}
static inline void writer_print_rational(WriterContext *wctx,
const char *key, AVRational q, char sep)
{
AVBPrint buf;
av_bprint_init(&buf, 0, AV_BPRINT_SIZE_AUTOMATIC);
av_bprintf(&buf, "%d%c%d", q.num, sep, q.den);
wctx->writer->print_string(wctx, key, buf.str);
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;
if (!wctx->is_fmt_chapter || !fmt_entries_to_show || av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
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, int is_duration)
{
char buf[128];
if (!wctx->is_fmt_chapter || !fmt_entries_to_show || av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {
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, int is_duration)
{
if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {
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);
}
static void writer_print_data(WriterContext *wctx, const char *name,
uint8_t *data, int size)
{
AVBPrint bp;
int offset = 0, l, i;
av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED);
av_bprintf(&bp, "\n");
while (size) {
av_bprintf(&bp, "%08x: ", offset);
l = FFMIN(size, 16);
for (i = 0; i < l; i++) {
av_bprintf(&bp, "%02x", data[i]);
if (i & 1)
av_bprintf(&bp, " ");
}
av_bprint_chars(&bp, ' ', 41 - 2 * i - i / 2);
for (i = 0; i < l; i++)
av_bprint_chars(&bp, data[i] - 32U < 95 ? data[i] : '.', 1);
av_bprintf(&bp, "\n");
offset += l;
data += l;
size -= l;
}
writer_print_string(wctx, name, bp.str, 0);
av_bprint_finalize(&bp, NULL);
}
#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;
}
/* WRITERS */
/* Default output */
typedef struct DefaultContext {
const AVClass *class;
int nokey;
int noprint_wrappers;
} DefaultContext;
#define OFFSET(x) offsetof(DefaultContext, x)
static const AVOption default_options[] = {
{ "noprint_wrappers", "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
{ "nw", "do not print headers and footers", OFFSET(noprint_wrappers), AV_OPT_TYPE_INT, {.dbl=0}, 0, 1 },
{ "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 },
{NULL},
};
static const char *default_get_name(void *ctx)
{
return "default";
}
static const AVClass default_class = {
"DefaultContext",
default_get_name,
default_options
};
static av_cold int default_init(WriterContext *wctx, const char *args, void *opaque)
{
DefaultContext *def = wctx->priv;
int err;
def->class = &default_class;
av_opt_set_defaults(def);
if (args &&
(err = (av_set_options_string(def, args, "=", ":"))) < 0) {
av_log(wctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
return err;
}
return 0;
}
static void default_print_footer(WriterContext *wctx)
{
DefaultContext *def = wctx->priv;
if (!def->noprint_wrappers)
printf("\n");
}
static void default_print_chapter_header(WriterContext *wctx, const char *chapter)
{
DefaultContext *def = wctx->priv;
if (!def->noprint_wrappers && 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)
{
DefaultContext *def = wctx->priv;
char buf[32];
if (wctx->nb_section)
printf("\n");
if (!def->noprint_wrappers)
printf("[%s]\n", upcase_string(buf, sizeof(buf), section));
}
static void default_print_section_footer(WriterContext *wctx, const char *section)
{
DefaultContext *def = wctx->priv;
char buf[32];
if (!def->noprint_wrappers)
printf("[/%s]", upcase_string(buf, sizeof(buf), section));
}
static void default_print_str(WriterContext *wctx, const char *key, const char *value)
{
DefaultContext *def = wctx->priv;
if (!def->nokey)
printf("%s=", key);
printf("%s\n", value);
}
static void default_print_int(WriterContext *wctx, const char *key, long long int value)
{
DefaultContext *def = wctx->priv;
if (!def->nokey)
printf("%s=", key);
printf("%lld\n", value);
}
static void default_show_tags(WriterContext *wctx, AVDictionary *dict)
{
AVDictionaryEntry *tag = NULL;
while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
if (!fmt_entries_to_show || (tag->key && av_dict_get(fmt_entries_to_show, tag->key, NULL, 0)))
printf("TAG:");
writer_print_string(wctx, tag->key, tag->value, 0);
}
}
static const Writer default_writer = {
.name = "default",
.priv_size = sizeof(DefaultContext),
.init = default_init,
.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 */
/**
* Apply C-language-like string escaping.
*/
static const char *c_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
{
const char *p;
for (p = src; *p; p++) {
switch (*p) {
case '\b': av_bprintf(dst, "%s", "\\b"); break;
case '\f': av_bprintf(dst, "%s", "\\f"); break;
case '\n': av_bprintf(dst, "%s", "\\n"); break;
case '\r': av_bprintf(dst, "%s", "\\r"); break;
case '\\': av_bprintf(dst, "%s", "\\\\"); break;
default:
if (*p == sep)
av_bprint_chars(dst, '\\', 1);
av_bprint_chars(dst, *p, 1);
}
}
return dst->str;
}
/**
* Quote fields containing special characters, check RFC4180.
*/
static const char *csv_escape_str(AVBPrint *dst, const char *src, const char sep, void *log_ctx)
{
const char *p;
int quote = 0;
/* check if input needs quoting */
for (p = src; *p; p++)
if (*p == '"' || *p == sep || *p == '\n' || *p == '\r')
quote = 1;
if (quote)
av_bprint_chars(dst, '\"', 1);
for (p = src; *p; p++) {
if (*p == '"')
av_bprint_chars(dst, '\"', 1);
av_bprint_chars(dst, *p, 1);
}
if (quote)
av_bprint_chars(dst, '\"', 1);
return dst->str;
}
static const char *none_escape_str(AVBPrint *dst, 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 *escape_mode_str;
const char * (*escape_str)(AVBPrint *dst, const char *src, const char sep, void *log_ctx);
} CompactContext;
#undef OFFSET
#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];
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->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;
AVBPrint buf;
if (wctx->nb_item) printf("%c", compact->item_sep);
if (!compact->nokey)
printf("%s=", key);
av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
printf("%s", compact->escape_str(&buf, value, compact->item_sep, wctx));
av_bprint_finalize(&buf, NULL);
}
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;
AVBPrint buf;
av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
if (wctx->nb_item) printf("%c", compact->item_sep);
if (!compact->nokey) {
av_bprint_clear(&buf);
printf("tag:%s=", compact->escape_str(&buf, tag->key, compact->item_sep, wctx));
}
av_bprint_clear(&buf);
printf("%s", compact->escape_str(&buf, tag->value, compact->item_sep, wctx));
}
av_bprint_finalize(&buf, NULL);
}
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,
};
/* Flat output */
typedef struct FlatContext {
const AVClass *class;
const char *section, *chapter;
const char *sep_str;
char sep;
int hierarchical;
} FlatContext;
#undef OFFSET
#define OFFSET(x) offsetof(FlatContext, x)
static const AVOption flat_options[]= {
{"sep_char", "set separator", OFFSET(sep_str), AV_OPT_TYPE_STRING, {.str="."}, CHAR_MIN, CHAR_MAX },
{"s", "set separator", OFFSET(sep_str), AV_OPT_TYPE_STRING, {.str="."}, CHAR_MIN, CHAR_MAX },
{"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_INT, {.dbl=1}, 0, 1 },
{"h", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_INT, {.dbl=1}, 0, 1 },
{NULL},
};
static const char *flat_get_name(void *ctx)
{
return "flat";
}
static const AVClass flat_class = {
"FlatContext",
flat_get_name,
flat_options
};
static av_cold int flat_init(WriterContext *wctx, const char *args, void *opaque)
{
FlatContext *flat = wctx->priv;
int err;
flat->class = &flat_class;
av_opt_set_defaults(flat);
if (args &&
(err = (av_set_options_string(flat, args, "=", ":"))) < 0) {
av_log(wctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
return err;
}
if (strlen(flat->sep_str) != 1) {
av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
flat->sep_str);
return AVERROR(EINVAL);
}
flat->sep = flat->sep_str[0];
return 0;
}
static const char *flat_escape_key_str(AVBPrint *dst, const char *src, const char sep)
{
const char *p;
for (p = src; *p; p++) {
if (!((*p >= '0' && *p <= '9') ||
(*p >= 'a' && *p <= 'z') ||
(*p >= 'A' && *p <= 'Z')))
av_bprint_chars(dst, '_', 1);
else
av_bprint_chars(dst, *p, 1);
}
return dst->str;
}
static const char *flat_escape_value_str(AVBPrint *dst, const char *src)
{
const char *p;
for (p = src; *p; p++) {
switch (*p) {
case '\n': av_bprintf(dst, "%s", "\\n"); break;
case '\r': av_bprintf(dst, "%s", "\\r"); break;
case '\\': av_bprintf(dst, "%s", "\\\\"); break;
case '"': av_bprintf(dst, "%s", "\\\""); break;
case '`': av_bprintf(dst, "%s", "\\`"); break;
case '$': av_bprintf(dst, "%s", "\\$"); break;
default: av_bprint_chars(dst, *p, 1); break;
}
}
return dst->str;
}
static void flat_print_chapter_header(WriterContext *wctx, const char *chapter)
{
FlatContext *flat = wctx->priv;
flat->chapter = chapter;
}
static void flat_print_section_header(WriterContext *wctx, const char *section)
{
FlatContext *flat = wctx->priv;
flat->section = section;
}
static void flat_print_section(WriterContext *wctx)
{
FlatContext *flat = wctx->priv;
int n = wctx->is_packets_and_frames ? wctx->nb_section_packet_frame
: wctx->nb_section;
if (flat->hierarchical && wctx->multiple_sections)
printf("%s%c", flat->chapter, flat->sep);
printf("%s%c", flat->section, flat->sep);
if (wctx->multiple_sections)
printf("%d%c", n, flat->sep);
}
static void flat_print_int(WriterContext *wctx, const char *key, long long int value)
{
flat_print_section(wctx);
printf("%s=%lld\n", key, value);
}
static void flat_print_str(WriterContext *wctx, const char *key, const char *value)
{
FlatContext *flat = wctx->priv;
AVBPrint buf;
flat_print_section(wctx);
av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
printf("%s=", flat_escape_key_str(&buf, key, flat->sep));
av_bprint_clear(&buf);
printf("\"%s\"\n", flat_escape_value_str(&buf, value));
av_bprint_finalize(&buf, NULL);
}
static void flat_show_tags(WriterContext *wctx, AVDictionary *dict)
{
FlatContext *flat = wctx->priv;
AVBPrint buf;
AVDictionaryEntry *tag = NULL;
av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
while ((tag = av_dict_get(dict, "", tag, AV_DICT_IGNORE_SUFFIX))) {
flat_print_section(wctx);
av_bprint_clear(&buf);
printf("tags%c%s=", flat->sep, flat_escape_key_str(&buf, tag->key, flat->sep));
av_bprint_clear(&buf);
printf("\"%s\"\n", flat_escape_value_str(&buf, tag->value));
}
av_bprint_finalize(&buf, NULL);
}
static const Writer flat_writer = {
.name = "flat",
.priv_size = sizeof(FlatContext),
.init = flat_init,
.print_chapter_header = flat_print_chapter_header,
.print_section_header = flat_print_section_header,
.print_integer = flat_print_int,
.print_string = flat_print_str,
.show_tags = flat_show_tags,
.flags = WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS|WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER,
};
/* INI format output */
typedef struct {
const AVClass *class;
AVBPrint chapter_name, section_name;
int hierarchical;
} INIContext;
#undef OFFSET
#define OFFSET(x) offsetof(INIContext, x)
static const AVOption ini_options[] = {
{"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_INT, {.dbl=1}, 0, 1 },
{"h", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_INT, {.dbl=1}, 0, 1 },
{NULL},
};
static const char *ini_get_name(void *ctx)
{
return "ini";
}
static const AVClass ini_class = {
"INIContext",
ini_get_name,
ini_options
};
static av_cold int ini_init(WriterContext *wctx, const char *args, void *opaque)
{
INIContext *ini = wctx->priv;
int err;
av_bprint_init(&ini->chapter_name, 1, AV_BPRINT_SIZE_UNLIMITED);
av_bprint_init(&ini->section_name, 1, AV_BPRINT_SIZE_UNLIMITED);
ini->class = &ini_class;
av_opt_set_defaults(ini);
if (args && (err = av_set_options_string(ini, args, "=", ":")) < 0) {
av_log(wctx, AV_LOG_ERROR, "Error parsing options string: '%s'\n", args);
return err;
}
return 0;
}
static av_cold void ini_uninit(WriterContext *wctx)
{
INIContext *ini = wctx->priv;
av_bprint_finalize(&ini->chapter_name, NULL);
av_bprint_finalize(&ini->section_name, NULL);
}
static void ini_print_header(WriterContext *wctx)
{
printf("# ffprobe output\n\n");
}
static char *ini_escape_str(AVBPrint *dst, const char *src)
{
int i = 0;
char c = 0;
while (c = src[i++]) {
switch (c) {
case '\b': av_bprintf(dst, "%s", "\\b"); break;
case '\f': av_bprintf(dst, "%s", "\\f"); break;
case '\n': av_bprintf(dst, "%s", "\\n"); break;
case '\r': av_bprintf(dst, "%s", "\\r"); break;
case '\t': av_bprintf(dst, "%s", "\\t"); break;