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format: Extend properties to handle lists/ranges

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This replaces the simple string used by pa_format_info's proplist with a
JSON string (accessed via new API only). This allows us to express lists
and ranges more cleanly, and embed type information for future
extensibility.

We use json-c for JSON parsing. This is a lightweight depdency (32 KB on
my system) and avoids the hassle of having to reinvent a JSON parser.

Also included is a test which verifies functionality and is
valgrind-clean.
This commit is contained in:
Arun Raghavan 2011-04-13 14:05:18 +05:30
parent 62f56a9f6b
commit 8d076d0990
7 changed files with 389 additions and 22 deletions
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11
src/pulse/format.h
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@ -102,6 +102,17 @@ int pa_format_info_is_compatible(pa_format_info *first, pa_format_info *second);
/** Return a human-readable string representing the given format. \since 1.0 */
char *pa_format_info_snprint(char *s, size_t l, const pa_format_info *f);
/** Sets an integer property on the given format info */
void pa_format_info_set_prop_int(pa_format_info *f, const char *key, int value);
/** Sets a property with a list of integer values on the given format info */
void pa_format_info_set_prop_int_array(pa_format_info *f, const char *key, const int *values, int n_values);
/** Sets a property which can have any value in a given integer range on the given format info */
void pa_format_info_set_prop_int_range(pa_format_info *f, const char *key, int min, int max);
/** Sets a string property on the given format info */
void pa_format_info_set_prop_string(pa_format_info *f, const char *key, const char *value);
/** Sets a property with a list of string values on the given format info */
void pa_format_info_set_prop_string_array(pa_format_info *f, const char *key, const char **values, int n_values);
PA_C_DECL_END
#endif