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ffprobe: add option to control optional fields display

This commit is contained in:
Gyan Doshi 2021-05-01 17:37:34 +05:30
parent d055af5e7b
commit 7c451b609c
2 changed files with 27 additions and 2 deletions
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6
doc/ffprobe.texi
View File

@ -335,6 +335,12 @@ Show information about all pixel formats supported by FFmpeg.
Pixel format information for each format is printed within a section
with name "PIXEL_FORMAT".
@item -show_optional_fields @var{value}
Some writers viz. JSON and XML, omit the printing of fields with invalid or non-applicable values,
while other writers always print them. This option enables one to control this behaviour.
Valid values are @code{always}/@code{1}, @code{never}/@code{0} and @code{auto}/@code{-1}.
Default is @var{auto}.
@item -bitexact
Force bitexact output, useful to produce output which is not dependent
on the specific build.

23
fftools/ffprobe.c
View File

@ -117,6 +117,11 @@ static int use_byte_value_binary_prefix = 0;
static int use_value_sexagesimal_format = 0;
static int show_private_data = 1;
#define SHOW_OPTIONAL_FIELDS_AUTO -1
#define SHOW_OPTIONAL_FIELDS_NEVER 0
#define SHOW_OPTIONAL_FIELDS_ALWAYS 1
static int show_optional_fields = SHOW_OPTIONAL_FIELDS_AUTO;
static char *print_format;
static char *stream_specifier;
static char *show_data_hash;
@ -745,8 +750,10 @@ static inline int writer_print_string(WriterContext *wctx,
const struct section *section = wctx->section[wctx->level];
int ret = 0;
if ((flags & PRINT_STRING_OPT)
&& !(wctx->writer->flags & WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS))
if (show_optional_fields == SHOW_OPTIONAL_FIELDS_NEVER ||
(show_optional_fields == SHOW_OPTIONAL_FIELDS_AUTO
&& (flags & PRINT_STRING_OPT)
&& !(wctx->writer->flags & WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS)))
return 0;
if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {
@ -3244,6 +3251,17 @@ static void ffprobe_show_pixel_formats(WriterContext *w)
writer_print_section_footer(w);
}
static int opt_show_optional_fields(void *optctx, const char *opt, const char *arg)
{
if (!av_strcasecmp(arg, "always")) show_optional_fields = SHOW_OPTIONAL_FIELDS_ALWAYS;
else if (!av_strcasecmp(arg, "never")) show_optional_fields = SHOW_OPTIONAL_FIELDS_NEVER;
else if (!av_strcasecmp(arg, "auto")) show_optional_fields = SHOW_OPTIONAL_FIELDS_AUTO;
if (show_optional_fields == SHOW_OPTIONAL_FIELDS_AUTO && av_strcasecmp(arg, "auto"))
show_optional_fields = parse_number_or_die("show_optional_fields", arg, OPT_INT, SHOW_OPTIONAL_FIELDS_AUTO, SHOW_OPTIONAL_FIELDS_ALWAYS);
return 0;
}
static int opt_format(void *optctx, const char *opt, const char *arg)
{
iformat = av_find_input_format(arg);
@ -3631,6 +3649,7 @@ static const OptionDef real_options[] = {
{ "show_library_versions", 0, { .func_arg = &opt_show_library_versions }, "show library versions" },
{ "show_versions", 0, { .func_arg = &opt_show_versions }, "show program and library versions" },
{ "show_pixel_formats", 0, { .func_arg = &opt_show_pixel_formats }, "show pixel format descriptions" },
{ "show_optional_fields", HAS_ARG, { .func_arg = &opt_show_optional_fields }, "show optional fields" },
{ "show_private_data", OPT_BOOL, { &show_private_data }, "show private data" },
{ "private", OPT_BOOL, { &show_private_data }, "same as show_private_data" },
{ "bitexact", OPT_BOOL, {&do_bitexact}, "force bitexact output" },